IBM AT 5170 Technical Reference

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Personal Computer

Hardware Reference

Library

Technical

Reference

First Edition (September, 1985)

The following paragraph does not apply to the United Kingdom or any country where such provisions are inconsistent with local law: INTERNATIONAL BUSINESS MACHINES

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This publication could include technical inaccuracies or typographical errors. Changes are periodically made to the information herein; these changes will be incorporated in new editions of the publication. IBM may make improvements and/or changes in the product(s) and/or the program(s) described in this publication at any time.

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© Copyright International Business Machines Corporation 1985

~

Federal Communications Commission

Radio Frequency Interference Statement

Warning: The equipment described herein has been certified to comply with the limits for a Class B computing device, pursuant to Subpart J of Part 15 of the FCC rules.

Only peripherals (computer input/output devices, terminals, printers, etc.) certified to comply with the Class B limits may be attached to the computer. Operation with non-certified peripherals is likely to result in interference to radio and TV reception. If peripherals not offered by mM are used with the equipment, it is suggested to use shielded grounded cables with in-line filters if necessary.

CAUTION

This product described herein is equipped with a grounded plug for the user's safety. It is to be used in conjunction with a properly grounded receptacle to avoid electrical shock. iii

Notes: iv

Preface

This manual describes the various units of the IBM Personal

Computer AT and how they interact. It also has information about the basic input/output system (BIOS) and about programming support.

The information in this publication is for reference, and is intended for hardware and program designers, programmers, engineers, and anyone else who needs to understand the design and operation of the IBM Personal Computer AT.

This manual consists of nine sections:

• The first three sections describe the hardware aspects of the

IBM Personal Computer AT including signal charts and register information.

• Section 4 describes keyboard operation, the commands to and from the system, and the various keyboard layouts.

• Section 5 contains information about the usage of BIOS and a system BIOS listing.

• Section 6 contains instruction sets for the 80286 microprocessor and the 80287 math coprocessor.

• Section 7 provides information about characters, keystrokes, and colors.

• Section 8 has general communications information.

• Section 9 contains information about the compatibility of the

IBM Personal Computer AT and the rest of the IBM

Personal Computer family.

A glossary of terms and a bibliography of related publications are included. v

Prerequisite Publications

Guide to Operations for the IBM Personal Computer AT

Suggested Reading

• BASIC for the IBM Personal Computer

• Disk Operating System (DOS)

• MA CR 0 Assembler for the IBM Personal Computer vi

Contents

SECTION 1. SYSTEM BOARD .....•..•............ 1-1

Memory .................................... 1-4

Microprocessor ............................... 1-4

System Performance ........................... 1-7

Direct Memory Access ......................... 1-9

System Interrupts ............................ 1-12

Hardware Interrupt Listing ................. 1-13

Interrupt Sharing ......................... 1-14

System Timers .............................. 1-22

System Clock ............................... 1-23

ROM Subsystem ............................. 1-23

RAM Subsystem ............................. 1-24

I/OChannel ................................ 1-24

Connectors ............................. 1-25

I/O Channel Signal Description ............. 1-31

NMI and Coprocessor Controls ............. 1-38

Other Circuits ............................... 1-40

Speaker ................................ 1-40

RAM Jumpers ........................... 1-40

Display Switch .......................... 1-41

Variable Capacitor ....................... 1-41

Keyboard Controller ...................... 1-42

Real-Time Clock/CMOS RAM Information ... 1-56

Specifications ............................... 1-69

System Unit ............................ 1-69

Connectors ............................. 1-71

Logic Diagrams - Type 1 .................. 1-76

Logic Diagrams - Type 2 .................. 1-98

SECTION 2. COPROCESSOR ...................... 2-1

Description .................................. 2-3

Programming Interface ......................... 2-3

Hardware Interface ............................ 2-4

SECTION 3. POWER SUPPLY ..•....•.........•.... 3-1

Inputs ...................................... 3-3 vii

Outputs ..................................... 3-4

DC Output Protection ......................... 3-4

Output Voltage Sequencing ..................... 3-4

No-Load Operation ........................... 3-5

Power-Good Signal ............................ 3-5

Connectors .................................. 3-7

SECTION 4. KEYBOARD .......................... 4-1

Description .................................. 4-3

Power-On Routine ............................ 4-4

Commands from the System ..................... 4-5

Commands to the System ....................... 4-9

Keyboard Scan-Code Outputs .................. 4-11

Clock and Data Signals ........................ 4-12

Keyboard Layouts ........................... 4-15

Specifications ............................... 4-22

Logic Diagram .............................. 4-23

SECTION 5. SYSTEM BIOS ..•.................•... 5-1

System BIOS Usage ........................... 5-3

Keyboard Encoding and Usage .................. 5-13

Quick Reference ............................. 5-24

SECTION 6. INSTRUCTION SET ................... 6-1

80286 Instruction Set .......................... 6-3

Data Transfer ............................ 6-3

Arithmetic ............................... 6-6

Logic ................................... 6-9

String Manipulation ...................... 6-11

Control Transfer ......................... 6-13

Processor Control ........................ 6-17

Protection Control ....................... 6-18

80287 Coprocessor Instruction Set ............... 6-22

Data Transfer ........................... 6-22

Comparison ............................ 6-23

Constants .............................. 6-24

Arithmetic .............................. 6-25

Transcendental .......................... 6-26

SECTION 7. CHARACTERS, KEYSTROKES, AND

COLORS •..............••.....•••..•......•... 7-1

Character Codes .............................. 7-3

Quick Reference ............................. 7-14 viii

SECTION 8. COMMUNICATIONS .•.••.....•..••.•• 8-1

Hardware ................................... 8-3

Establishing a Communications Link .............. 8-5

SECTION 9. IBM PERSONAL COMPUTER

COMPATIBILITY ..........•.••..••.......••.••• 9-1

Hardware Considerations ....................... 9-3

System Board ............................ 9-3

Fixed Disk Drive .......................... 9-5

Diskette Drive Compatibility ................ 9-5

Copy Protection .......................... 9-5

Application Guidelines ......................... 9-7

High-Level Language Considerations .......... 9-7

Assembler Language Programming Considerations 9-8

Multitasking Provisions .................... 9-16

Machine-Sensitive Code ................... 9-19

Glossary ••.••.•..•..••••.•••..•..••••.••.•• Glossary-l

Bibliograpby ..•••••••••.••.•••••••••••...• Bibliograpby-l

Index ........................................ Index-l ix

Notes:

x

INDEX TAB LISTING

Section 1: System Board ............................... .

Section 2: Coprocessor ................................ .

Section 3: Power Supply ............................... .

Section 4: Keyboard .................................. .

Section 5: System BIOS ............................... .

Section 6: Instruction Set .............................. . xi

Notes:

xii

Section 7: Characters, Keystrokes, and Colors .............. .

Section 8: Communications ............................ .

Section 9: Compatibility ............................... .

Glossary ........................................... .

Bibliography ........................................ .

Index .............................................. . xiii

xiv

System Block Diagram

System Unit

System Board

80286 80287

Microprocessor Coprocessor

Osci llator

16 Interrupt ROM

Levels

Speaker

Connector

7 Channel

DMA

CMOS

RAM

Real-Time

Clock

Keyboard

Controller

Battery

Connector

Power Supply

115/230

Speaker

Keyboard

Battery

I/O

Channel

Diskette

Drives 00000000

DDDDD D

Fixed

Disk

Drives

Fixed Disk and

Diskette Adapter

SECTION 1. SYSTEM BOARD

Contents

Memory .................•...•............•.•..•• 1-4

Microprocessor ................•.................. 1-4

Real Address Mode .......................... 1-4'

Protected (Virtual Address) Mode .............. 1-5

System Performance ..•............•••.•....••..... 1-7

DirectMemory Access .................•...•..•...• 1-9

System Interrupts ................................ 1-12

Hardware Interrupt Listing ...................... 1-13

Interrupt Sharing .............................. 1-14

Design Overview ........................... 1-14

Program Support ........................... 1-15

Precautions ............................... 1-17

Examples ................................. 1-18

System Tinters .........•.........•.........••...• 1-22

System Clock .......................••........... 1-23

ROM Subsystem

RAM Subsystem

1-23

1-24

110 Channel .................................... 1-24

Connectors .................................. 1-25

110 Channel Signal Description .................. 1-31

NMI and Coprocessor Controls .................. 1-38

Other Circuits .............•.•...........•...••.. 1-40

Speaker ..................................... 1-40

RAM Jumpers ................................ 1-40

System Board 1-1

Display Switch ................................ 1-41

Variable Capacitor ............................ 1-41

Keyboard Controller ........................... 1-42

Keyboard Controller Initialization .............. 1-42

Receiving Data from the Keyboard ............. 1-43

Scan Code Translation ....................... 1-43

Sending Data to the Keyboard ................. 1-48

Inhibit ................................... 1-48

Keyboard Controller System Interface .......... 1-48

Status Register ............................. 1-49

Status-Register Bit Definition ................. 1-49

Output Buffer ............................. 1-50

Input Buffer ............................... 1-51

Commands (I/O Address Hex 64) ............. 1-51

I/O Ports ................................. 1-54

Real-Time Clock/CMOS RAM Information ........ 1-56

Real-Time Clock Information ................. 1-57

CMOS RAM Configuration Information ......... 1-59

1/

0 Operations ............................. 1-68

Specifications •.......•.•........•....•........•. 1-69

System Unit .................................. 1-69

Size ..................................... 1-69

Weight ................................... 1-69

Power Cables .............................. 1-69

Environment .............................. 1-69

Heat Output ............................... 1-70

Noise Level ............................... 1-70

Electrical ................................. 170

Connectors .................................. 1-71

Logic Diagrams - Type 1 ........................ 1-7 6

Logic Diagrams - Type 2 ........................ 1-98

1-2 System Board

The type 1 system board is approximately 30.5 by 35 centimeters

(12 by 13.8 inches). The type 2 system board is approximately

23.8 by 35 centimeters (9.3 by 13.8 inches). Both types of system boards use very large scale integration (VLSI) technology and have the following components:

• Intel 80286 Microprocessor

• System support function:

Seven-Channel Direct Memory Access (DMA)

Sixteen-level interrupt

Three programmable timers

System clock

• 64K read-only memory (ROM) subsystem, expandable to

128K

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•

A 512K random-access memory (RAM) Subsystem

•

Eight input/output (I/O) slots:

Six with a 36-pin and a 62-pin card-edge socket

Two with only the 62-pin card-edge socket

• Speaker attachment

•

Keyboard attachment

• Complementary metal oxide semiconductor (CMOS) memory RAM to maintain system configuration

•

Real-Time Clock

•

Battery backup for CMOS configuration table and

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Real-Time Clock

System Board 1-3

Memory

The type 1 system board has four banks of memory sockets, each supporting 9 128K-by-1-bit modules for a total memory size of

512K, with parity checking. ~

The type 2 system board has two banks of memory sockets, each supporting 9 256K-by-1-bit modules for a total memory size of

512K, with parity checking.

Microprocessor

The Intel 80286 microprocessor has a 24-bit address, 16-bit memory interface 1, an extensive instruction set, DMA and interrupt support capabilities, a hardware fixed-point mUltiply and divide, integrated memory management, four-level memory protection, 1G (1,073,741,824 bytes) of virtual address space for each task, and two operating modes: the 8086-compatible real address mode and the protected or virtual address mode. More detailed descriptions of the microprocessor may be found in the publications listed in the Bibliography of this manual.

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Real Address Mode

In the real address mode, the microprocessor's physical memory is

a

contiguous array of up to one megabyte. The microprocessor addresses memory by generating 20-bit physical addresses.

The selector portion of the pointer is interpreted as the upper 16 bits of a 20-bit segment address. The lower 4 bits of the 20-bit segment address are always zero. Therefore, segment addresses begin on multiples of 16 bytes.

In this manual, the tenn interface refers to a device that carries signals between functional units.

1-4 System Board

All segments in the real address mode are 64K in size and may be read, written, or executed. An exception or interrupt can occur if data operands or instructions attempt to wrap around the end of a segment. For example, a word with its low-order byte at offset

FFFF and its high-order byte at 0000. If, in the real address mode, the information contained in the segment does not use the full 64K, the unused end of the segment may be overlayed by another segment to reduce physical memory requirements.

Protected (Virtual Address) Mode

The protected mode offers extended physical and virtual memory address space, memory protection mechanisms, and new operations to support operating systems and virtual memory.

Note: See "BIOS Programming Hints" in Section 5 for special cautions while operating in the protected mode.

The protected mode provides a 1 G virtual address space for each task mapped into a 16M physical address space. The virtual address space may be larger than the physical address space, because any use of an address that does not map to a physical memory location will cause a restartable exception.

As in the real address mode, the protected mode uses 32-bit pointers, consisting of 16-bit selector and offset components.

The selector, however, specifies an index into a memory resident table rather than the upper 16 bits of a real memory address. The

24-bit base address of the desired segment is obtained from the tables in memory. The 16-bit offset is added to the segment base address to form the physical address. The microprocessor automatically refers to the tables whenever a segment register is loaded with a selector. All instructions that load a segment register will refer to the memory-based tables without additional program support. The memory-based tables contain 8-byte values called descriptors.

System Board 1-5

Following is a block diagram of the system board.

1-6 System Board

System Performance

The 80286 microprocessor operates at 6 MHz, resulting in a clock cycle time of 167 nanoseconds.

A bus cycle requires 3 clock cycles (which includes 1 wait state) so that a 500-nanosecond, 16-bit, microprocessor cycle time is achieved. Eight-bit bus operations to 8-bit devices take 6 clock cycles (which include 4 wait states), resulting in a

1000-nanosecond microprocessor cycle. Sixteen-bit bus operations to 8-bit devices take 12 clock cycles (which include 10 wait states) resulting in a 2-microsecond microprocessor cycle.

The refresh controller steps one refresh address every 15 microseconds. Each refresh cycle requires 5 clock cycles to refresh all of the system's dynamic memory; 256 refresh cycles are required every 4 milliseconds. The following formula determines the percentage of bandwidth used for refresh.

% Bandwidth used 5 cycles X 256 1280 for Refresh = -------------- =

4 ms/167 ns 24000

= 5.3%

The DMA controller operates at 3 MHz, which results in a clock cycle time of 333 nanoseconds. All DMA data-transfer bus cycles are 5 clock cycles or 1.66 microseconds. Cycles spent in the transfer of bus control are not included.

DMA channels 0, 1, 2, and 3 are used for 8-bit data transfers, and channels 5, 6, and 7 process 16-bit transfers. Channel 4 is used to cascade channels 0 through 3 to the microprocessor.

System Board 1-7

The following figure is a system memory map.

Address Name

000000

07FFFF to 512K system board

080000 to 128K

09FFFF

Function

System board memory

OAOOOO to 128K video

OBFFFF RAM oeoooo to 128K I/O

ODFFFF expansion ROM

OEOOOO to 64K reserved

OEFFFF on system board

OFOOOO to 64K ROM on the

OFFFFF system board

100000 to Maximum

FDFFFF memory 15M

FEOOOO to 64K reserved

FEFFFF on system board

FFQOOO to 64K ROM on the

FFFFFF system board

System Memory Map

I/O channel memory - IBM Personal

Computer AT 128K Memory Expansion

Option

Reserved for graphics display buffer

Reserved for ROM on I/O adapters

Duplicated code assignment at address FEOOOO

Duplicated code assignment at address FFOOOO

I/O channel memory - 512K to 15M installed on memory expansion options

Duplicated code assignment at address OEOOOO

Dupl icated code assignment at address OFOOOO

1-8 System Board

Direct Memory Access

The system supports seven direct memory access (DMA) channels. Two Intel 8237 A-5 DMA Controller chips are used, assigned as follows:

Controller 1

Ch

o -

Reserved

Ch 1 - SOLC

Ch 2 -

o

i skette ( IBM

Personal Computer)

Ch 3 - Reserved

DMA Channels

Controller 2

Ch 4 Cascade for Ctlr 1

Ch 5 - Reserved

Ch 6 - Reserved

Ch 7 - Reserved

DMA controller 1 contains channels 0 through 3. These channels support 8-bit data transfers between 8-bit I/O adapters and 8- or

16-bit system memory. Each channel can transfer data throughout the 16M system-address space in 64K blocks.

The following figures show address generation for the DMA channels.

Source

Address

OMA Page Registers

A23<---------->A16

Controller

A15<---------->AO

Address Generation for DMA Channels 0 through 3

Note: The addressing signal,

I byte high enable

I

(BHE), is generated by inverting address line AO.

System Board 1-9

DMA controller 2 contains channels 4 through 7. Channel 4 is used to cascade channels 0 through 3 to the microprocessor.

Channels 5, 6, and 7 support 16-bit data transfers between 16-bit

I/O adapters and 16-bit system memory. These DMA channels can transfer data throughout the 16M system-address space in

128K blocks. Channels 5, 6, and 7 cannot transfer data on odd-byte boundaries.

Source

Address

DMA Page Registers

A23<---------->A17

Controller

A16<---------->Al

Address Generation for DMA Channels 5 through 7

Note: The addressing signals, BHE and AO, are forced to a

10gicalO.

The following figure shows the addresses for the page register.

Page Register

DMA Channel 0

DMA Channel 1

DMA Channel 2

DMA Channel 3

DMA Channel 5

DMA Channel 6

DMA Channel 7

Refresh

Page Register Addresses liD Hex Address

0087

0083

0081

0082

008B

0089

008A

008F

Addresses for all DMA channels do not increase or decrease through page boundaries (64K for channels 0 through 3, and

128K for channels 5 through 7).

DMA channels 5 through 7 perform 16-bit data transfers. Access can be gained only to 16-bit devices (I/O or memory) during the

DMA cycles of channels 5 through 7. Access to the DMA controller, which controls these channels, is through addresses hex oeo through ODF.

I/O

1-10 System Board

The DMA controller command code addresses follow.

Hex

Address

ODD

002

004

006

008

OOA

DOC

ODE

OCO

OC2 oc4

OC6

OC8

DCA

OCC

OCE

DMA Controller

Register Function

CHO base and current address

CHO base and current word count

CHI base and current address

CHI base and current word count

CH2 base and current address

CH2 base and current word count

CH3 base and current address

CH3 base and current word count

Read Status Register/Write Command Register

Write Request Register

Write Single Mask Register Bit

Write Mode Register

Clear Byte Pointer Flip-Flop

Read Temporary Register/Write Master Clear

Clear Mask Register

Write All Mask Register Bits

All DMA memory transfers made with channels 5 through 7 must occur on even-byte boundaries. When the base address for these channels is programmed, the real address divided by 2 is the data written to the base address register. Also, when the base word count for channels 5 through 7 is programmed, the count is the number of 16-bit words to be transferred. Therefore, DMA channels 5 through 7 can transfer 65,536 words, or 128Kb maximum, for any selected page of memory. These DMA channels divide the 16M memory space into 128K pages. When the DMA page registers for channels 5 through 7 are programmed, data bits D7 through D1 contain the high-order seven address bits (A23 through A17) of the desired memory space. Data bit DO of the page registers for channels 5 through 7 is not used in the generation of the DMA memory address.

At power-on time, all internal locations, especially the mode registers, should be loaded with some valid value. This is done even if some channels are unused.

System Board 1-11

System Interrupts

The 80286 microprocessor's non-maskable interrupt (NMI) and two 8259A Controller chips provide 16 levels of system interrupts.

Note: Any or all interrupts may be masked (including the microprocessor's NMI).

~.

1-12 System Board

Hardware Interrupt Listing

The following shows the interrupt-level assignments in decreasing priority.

,.-..."

,.-..."

Level

Microprocessor NMI

Interrupt Controllers

CTRL I CTRL 2

Function

Parity or 1/0 Channel Check

IRQ 0

IRQ I

IRQ 2 +-

Timer Output 0

Keyboard (Output Buffer Full)

Interrupt from CTRL 2

IRQ 8

IRQ 9

" -

IRQ 10

IRQ 11

IRQ 12

IRQ 13

IRQ 14

IRQ 15

Realtime Clock Interrupt

Software Redirected to INT OAH

PC Network

*

PC Network(Alt.)

*

Reserved

Reserved

Reserved

Coprocessor

Fixed Disk Controller

Reserved

IRQ 3

IRQ 4

IRQ 5

IRQ 6

IRQ 7

Serial Port 2

BSC

BSC (Alt.)

Cluster (Primary)

PC Network

*

PC Network (Alt.)

SDLC

*

Serial Port 1

BSC

BSC (A It. )

SDLC

Parallel Port 2

Diskette Controller

Fixed Disk and Diskette Drive

Parallel Port 1

Data Aguisition and Control

GPIB

*"Ii

***

Cluster (Secondary)

The PC Network is jumper selectable.

* The GPIB Adapter can be set to interrupts 2 through 7.

** The Data Acquisition Adapter can be set to interrupts

3 through 7. The default interrupt is 7.

Hardware Interrupt Listing

System Board 1-13

Interrupt Sharing

A definition for standardized hardware design has been established that enables mUltiple adapters to share an interrupt level. This section describes this design and discusses the programming support required.

Note: Since interrupt routines do not exist in ROM for protected mode operations, this design is intended to run only in the microprocessor's real address mode.

Design Overview

Most interrupt-supporting adapters hold the

I interrupt request

I line (IRQ) at a low level and then drive the line high to cause an interrupt. In contrast, the shared-interrupt hardware design allows IRQ to float high through pull-up resistors on each adapter. Each adapter on the line may cause an interrupt by pulsing the line to a low level. The leading edge of the pulse arms the 8259A Interrupt Controller; the trailing edge signals the interrupt controller to cause the interrupt. The duration of this pulse must be between 125 and 1,000 nanoseconds. r-....

The adapters must have an

I interrupt

I status bit (INT) and a

I interrupt enable

I bit (ENA) that can be controlled and monitored by its software.

Each adapter sharing an interrupt level must monitor the IRQ line. When any adapter drives the line low, all other adapters on that line must be prevented from issuing an interrupt request until they are rearmed.

If an adapter's INT status bit is at a high level when the interrupt sharing logic is rearmed, the adapter must reissue the interrupt.

This prevents lost interrupts if two adapters issue an interrupt at the same time and an interrupt handler issues a Global Rearm after servicing one of the adapters.

1-14 System Board

The following diagram is an example of the shared interrupt hardware logic.

INT

ENA

Q f-----~ Q

System

Cl o c k - - - + - - - - + - - - - - - - '

+5

Q

L....-_ _ ---j >CLK -Q

-CLR

-Global

R e a r m - - - - + - - - - - - - '

Shared Interrupt Logic Diagram

>CLK

-CLR

-Q

+5

2.2K Ohms

>'-_-4.-

IRQ

Program Support

During multitasking, tasks are constantly being activated and deactivated in no particular order. The interrupt-sharing program support described in this section provides for an orderly means to:

• Link a task's interrupt handler to a chain of interrupt handlers

• Share the interrupt level while the task is active

• Unlink the interrupt handler from the chain when the task is deactivated.

Linking

to

a Chain

Each newly activated task replaces the interrupt vector in low memory with a pointer to its own interrupt handler. The old

1""'"'\

interrupt vector is used as a forward pointer (FPTR) and is stored at a fixed offset from the new task's interrupt handler.

System Board 1-15

Sharing the Interrupt Level

When the new task's handler gains control as a result of an interrupt, the handler reads the contents of the adapter's interrupt status register to determine if its adapter caused the interrupt. If it did, the handler services the interrupt, disables the interrupts

(CLI), issues a non-specific End of Interrupt (EOI), and then, to rearm the interrupt hardware, writes to address 02FX, where X corresponds to interrupt levels 3 through 7, and 9 (IRQ9 is

02F2). A write to address 06FX, where X may be 2 through 7, is required for interrupt levels 10 through 15, respectively. Each adapter in the chain decodes the address which results in a Global

Rearm. An adapter is required to decode the least significant 11 bits for this Global Rearm command. The handler then issues a

Return From Interrupt (IRET).

~

If its adapter did not cause the interrupt, the handler passes control to the next interrupt handler in the chain.

Unlinking from the Chain

To unlink from the chain, a task must first locate its handler's position within the chain. By starting at the interrupt vector in low memory, and using the offset of each handler's FPTR to find the entry point of each handler, the chain can be methodically searched until the task finds its own handler. The FPTR of the previous handler in the chain is replaced by the task's FPTR, thus removing the handler from the chain.

Error Recovery

Should the unlinking routine discover that the interrupt chain has been corrupted (an interrupt handler is linked but does not have a valid SIGNATURE), an unlinking error-recovery procedure must be in place. Each application can incorporate its own unlinking error procedure into the unlinking routine. One application may choose to display an error message requiring the operator to either correct the situation or power down the system. Another application may choose an error recovery procedure that restores the original interrupt vector in low memory, and bypasses the corrupt portion of the interrupt chain. This error recovery

~

1-16 System Board

procedure may not be suitable when adapters that are being serviced by the corrupt handler are actively generating interrupts, since unserviced interrupts lock up that interrupt level.

ROS Considerations

Adapters with their handlers residing in ROS may choose to implement chaining by storing the 4 byte FPTR (plus the FIRST flag if it is sharing interrupt 7 or 15) in on-adapter latches or ports. Adapter ROS without this feature must first test to see that it is the first in the chain. If it is the first in the chain, the adapter can complete the link; if not, the adapter must exit its routine without linking.

Precautions

The following precautions must be taken when designing hardware or programs using shared interrupts:

•

Hardware designers should ensure the adapters:

Do not power up with the ENA line active or an interrupt pending.

Do not generate interrupts that are not serviced by a handler. Generating interrupts when a handler is not active to service the adapter causes the interrupt level to lock up. The design relies on the handler to clear its adapter's interrupt and issue the Global Rearm.

Can be disabled so that they do not remain active after their application has terminated.

• Programmers should:

Ensure that their programs have a short routine that can be executed with the AUTOEXEC.BAT to disable their adapter's interrupts. This precaution ensures that the adapters are deactivated if the user reboots the system.

System Board 1-17

Treat words as words, not bytes. Remember that data is stored in memory using the Intel format (word 424B is stored as 4B42).

Interrupt Chaining Structure

ENTRY, JMP

FPTR

SHORT PAST

DD

SIGNATURE DW

0 q2qBH

PAST,

FLAGS

FIRST

JMP

-

DB

EQU BOH

SHORT RESET

DB DUP 7 (0 )

,

Jump around structure ,

,

,

Forward Pointer

Used when unlinking to identify compatible interrupt handlers

,

Flags ,

Flag for being first in chain

,

,

Future expansion

Actual start of code

The interrupt chaining structure is a 16-byte format containing

FPTR, SIGNATURE, and RES BYTES. It begins at the third byte from the interrupt handler'sentry point. The first instruction of every handler is a short jump around the structure to the start of the routine. Since the position of each interrupt handler's chaining structure is known (except for the handlers on adapter ROS), the FPTRs can be updated when unlinking.

The FIRST flag is used to determine the handler's position in the chain when unlinking when sharing interrupts 7 and 15. The

RESET routine, an entry point for the operating system, must disable the adapter's interrupt and RETURN FAR to the operating system.

Note: All handlers designed for interrupt sharing must use

424B as the signature to avoid corrupting the chain.

~

Examples

In the following examples, notice that interrupts are disabled before control is passed to the next handler on the chain. The next handler receives control as if a hardware interrupt had caused it to receive control. Also, notice that the interrupts are disabled before the non-specific EOI is issued, and not reenabled in the interrupt handler. This ensures that the IRET is executed

(at which point the flags are restored and the interrupts

.~

1-18 System Board

reenabled) before another interrupt is serviced, protecting the stack from excessive build up.

Example of an Interrupt Handler

YOUR_CARD EQU

ISB

REARM

EQU

EQU

EOI

OCR

IMR

EQU

EQU

EQU

EQU

2F7H

67H

20H

20H

21H

Location of your card's interrupt control/status register

Interrupt bit in your card's interrupt control status register

Global Rearm location for interrupt level 7

Specific EOI for 8259'5 interrupt level 7

Non-specific EOI

Location of 8259 operational control register

Location of 8259 interrupt mask register

MYCSEG

ENTRY

SEGMENT

ASSUME

PRoe

JMP

FFTR

SIGNATURE

DD

DW

PARA

CS:HYCSEG,DS:DSEG

FAR

SHORT PAST

424BH

FLAGS

~

JMP

RES

-

BYTES

PAST:

DB

EQU

SHORT

DB

STI

PUSH

MOV

IN

TEST

JNZ

TEST

JNZ

POP

CLI

JMP

80H

RESET

DUP (0 )

DX,YOUR_CARD

AL,DX

AL,ISB

SERVICE

CS,FLAGS.FIRST

EXIT

DWORD PTR CS:FPTR

SERVICE:

EXIT:

CLI

MOV

OUT

MOV

OUT

POP

IRET

RESET:

~

ENTRY

RET

ENDP

MYCSEG

END

AL,EOI aeR,AL

OX,REARM

DX.AL

ENDS

ENTRY

Entry point of handler

Forward Pointer

Used when unlinking to identify compatible interrupt handlers

Flags

Future expansion

Actual start of handler code

Save needed registers

Select your status register

Read the status register

Your card caused the interrupt?

Yes, branch to service logic

Are we the first ones in?

If yes, branch for EOI and Rearm

Restore registers

Disable interrupts

Pass control to next guy on chain

Service the interrupt

Disable the interrupts

Issue non-specific EOI to 8259

Rearm the cards

Restore registers

Disable your card

Return FAR to operating system

System Board 1-19

Linking Code Example

PUSH eLI

PUSH

ES

Set forward pointer to value of interrupt vector in low memory

ASSUME CS:CODESEG,DS:CODESEG

ES

AX,350FH

; Disable interrupts

DOS get interrupt vector HOV

IHT

HOV

21H

51,OFFSET CS:FPTR Get offset of your forward pointer

KOV

KOV

CKP

CS: (SI(,BX

CS: (SI+2) ,ES in an indexable register store the old interrupt vector in your forward pointer for chaining

ES:BYTE PTR[BXJ.CFH Test for IRET

JNZ

KOV

SETVECTR: POP

PUSH

SETVECTR

CS:FLAGS,FIRST

ES

DS set up first in chain flag

; Make interrupt vector in low memory point to your handler

KOV

MOV

DX,OFFSET BNTRY

AX,SEG ENTRY

Make interrupt vector point to your handler

If OS not

= es, get it and put it in DS MOV

KOV

INT

POP

DS,AX

AX,250FH

21H

DS

DOS set interrupt vector

Unmask (enable) interrupts for your level

IN AL,IMR Read interrupt mask register

JKP $+2 10 delay

AND

OUT

KOV

JKP

OUT

STI

POP

AL,07FH

IMR,AL

AL,SPC_EOI

$+Z

OCR,AL

ES

Unmask interrupt level 7 write new interrupt mask

Issue specific EO! for level to allow pending level 7 interrupts

(if any) to be serviced

Enable interrupts

1-20 System Board

Unlinking Code Example

PUSH DS

ES PUSH

CLI

HOV AX,350FH

""

INT

HOV

Z1H

CX,ES

Are we the first handler in the chain?

HOV AX,eS

Disable interrupts

DOS get interrupt vector

ES:BX points to first of chain

Pickup segment part of interrupt vector

CHP BX,OFFSET ENTRY

Get code seq into comparable register

Interrupt vector in low memory pointing to your handler's offset?

JNE

CHP

UNCHAIN_A

AX,ex

No, branch vector pointing to your handler's segment?

JNE UNCHAIN_A No, branch

Set interrupt vector in low memory to point to the handler pointed to by your pointer

PUSH

MOV

HOV

MOV

INT

POP

UNCHAIN_A:

JMP

CHP ex

=

UNCHAIN_X

FPTR offset, ES

ES:IBX+61,QBQZH

FPTR segment, ex

= es

Is handler using the appropriate conventions (is SIGNATURE present in the interrupt chaining structure)?

JNE

LDS

CHP exception

SI,ES:[BX+2]

No, invoke error exception handler

Get FPTR's segment and offset

JNE

HOV

CHP

SI,OFFSET ENTRY Is this forward pointer pointing to your handler's offset?

No, branch UNCHAIN_B eX,DS

AX,CX

Move to compare

Is this forward pointer pointing to your handler's segment?

No, branch JNE

Located your handler in the chain

MOV

HOV

AX,WORD PTR CS:FPTR

ES: I BX+ZI ,AX

Get your FPTR's offset

Replace offset of FPTR of handler

MOV

MOV that points to you

AX,WORD PTR eS:FPTRI2] ; Get your FPTR's segment

ES:[BX+4I,AX Replace segment of FPTR of handler

HOV

AND

OR

DS

DX,WORD PTR CS:FPTR

DS,WORD PTR CS FPTRIZI

AX,2S0PH ; DOS set interrupt vector

Z1H

DS

AL,eS:FLAGS

AL,FIRST

ES: IBX + 61,AL that points to you

Get your flags

Isolate FIRST flag

Set your first flag into prior routine

UNCHAIN_B: MOV

PUSH

PUSH

JHP

UNCHAIN_X: STI

POP

POP

BX,SI

OS

ES

UNCHAIN_A

ES

DS

Move new offset to BX

Examine next handler in chain

Enable interrupts

System Board

1-21

System Timers

The system has three programmable timer/counters, Channels 0 through 2. They are controlled by an Intel 8254-2

Timer/Counter chip, and are defined as follows:

Channel 0 System Timer

GATE 0

CLKINO

CLKOUTO

Tied on

1.190 MHz OSC

8259A IRQ 0

Channell

GATE 1

CLKIN 1

CLKOUT 1

Refresh Request Generator

Tied on

1.190 MHz OSC

Request refresh cycle

Note: Channel 1 is programmed as a rate generator to produce a IS-microsecond period signal.

Channel 2

GATE 2

CLKIN2

CLKOUT2

Tone Generation for Speaker

Controlled by bit 0 of port hex 61, PPI bit

1.190 MHz OSC

Used to drive the speaker

The 8254-2 Timer/Counter is a programmable interval timer/counter that system programs treat as an arrangement of four external I/O ports. Three ports are treated as counters; the fourth is a control register for mode programming. The following is a system-timer block diagram.

~

1-22 System Board

+5 Vdc

-Refresh Refresh Request

L -

D Q

Clock

Clear

System

Bus _ _

+5 Vdc

Gate 0

Clock In 0

Gate I

I/O Add ress

Hex 006 I -

Port Bi t 0

-

Clock In 1

Gate 2

Clock In 2

Clock Out 0

Clock Out I -

Clock Out 2

I/O Add ress

Hex 006 I

Port Bi t I

PC LK

(2 .38MHz)

Divide by 2

I

I

Driver

I

I

AND

I

IRQ 0

Low

Pass

F i Iter f---+

To Speaker

System-Timer Block Diagram

System Clock

The 82284 System Clock Generator is driven by a 12-MHz crystal. Its output

I clock

I signal (CLK) is the input to the system microprocessor, the coprocessor, and I/O channel.

ROM Subsystem

The system board's ROM subsystem consists of two 32K by 8-bit code for odd and even addresses resides in separate modules.

ROM is assigned at the top of the first and last 1M address space

(OFOOOO and FFOOOO). ROM is not parity-checked. Its access time is 150 nanoseconds and its cycle time is 230 nanoseconds.

System Board 1-23

RAM Subsystem

The system board's RAM subsystem starts at address 000000 of the 16M address space. It is 512K of 128K-by-l-bit RAM modules (type 1 system board) or 512K of 256K-by-l-bit RAM ~ modules (type 2 system board). Memory access time is 150 nanoseconds and the cycle time is 275 nanoseconds.

Memory refresh requ~sts one memory cycle every 15 microseconds through the timer/counter (channell). The RAM initialization program performs the following functions:

• Initializes channel 1 of the timer/counter to the rate generation mode, with a period of 15 microseconds.

• Performs a memory write operation to any memory location.

Note: The memory must be accessed or refreshed eight times before it can be used.

I/O Channel

The I/O channel supports:

• I/O address space hex 100 to hex 3FF

• 24-bit memory addresses (16M)

• Selection of data accesses (either 8- or 16-bit)

• Interrupts

• DMA channels

• I/O wait-state generation

1-24 System Board

• Open-bus structure (allowing mUltiple microprocessors to share the system's resources, including memory)

• Refresh of system memory from channel microprocessors.

Connectors

The following figure shows the location and the numbering of the

I/O channel connectors. These connectors consist of six 36-pin and eight 62-pin edge connector sockets.

Note: The 36-pin connector is not present in two positions on the I/O channel. These positions can support only 62-pin

I/O bus adapters.

110 CHANNEL

CONNECTORS r o r

I/O Channel Connector Location

System Board 1-25

The following figure shows the pin numbering for I/O channel connectors 11 through J8.

B 1

Rear Panel

,

,,

,,

,,

,

,

,,

,

,

Al

BIO AIO

B20 A20

B31 A31

Component Side

I/O Channel Pin Numbering (J1-J8)

1-26 System Board

The following figure shows the pin numbering for I/O channel connectors J10 through J14 and J16.

Rear Panel

01 C 1

010 C10

018 c18

Component Side

I/O Channel Pin Numbering (J10-J14 and J16)

System Board 1-27

The following figures summarize pin assignments for the I/O channel connectors.

I/O Pin

Al

A2

A3

A4

A5

A6

A7

A8

A9

AlO

Al I

Al2

Al3

Al4

Al5

Al6

A25

A26

A27

A28

A29

A30

A31

Al7

Al8

Al9

A20

A21

A22

A23

A24

Signal Name

-I/O CH

S07

So6

CK

S05 so4

S03

S02

SOl

SOO

-I/O CH

AEN

SAl9

SAl8

SAl7

SAl6

ROY

SA7

SA6

SA5

SA4

SA3

SA2

SAl

SAO

SAIS

SAl4

SAl3

SAl2

SA I I

SAIO

SA9

SA8

I/O

/0

/0

/0

/0

/0

/0

/0

/0

/0

/0

/0

/0

/0

/0

/0

I/O

I

0

/0

/0

/0

/0

/0

I

I/O

I/O

I/O

I/O

I/O

I/O

I/O

I/O Channel (A-Side, J1 through J8)

1-28 System Board

I/O Pin

B9

Bl0

B11

B12

B13

B14

B15

B16

B17

B18

B 1

B2

B3

B4

B5

B6

B7

B8

B19

B20

B21

B22

B23

B24

B25

B26

B27

B28

B29

B30

B31

Signal Name

GND

RESET DRV

+5 Vdc

IRQ 9

-5 Vdc

DRQ2

-12 Vdc

OWS

+12 Vdc

GND

-SMEMW

-SMEMR

-lOW

-lOR

-DACK3

DRQ.3

-DACK1

DRQl

-REFRESH

ClK

IRQ7

IRQ6

IRQ5

IRQ4

IRQ3

-DACK2

T/C

BALE

+5Vdc

OSC

GND

I/O Channel IB-Side, J1 through J8)

I/O

Ground

0

Power

I

Power

I

Power

I

Power

Ground

0

0

I/O

I/O

0

I

0

I

I/O

0

I

I

I

I

I

0

0

0

Power

0

Ground

System Board 1-29

I/O Pin

C 1

C2

C3

C4

C5

C6

C7 c8

C9

Cl0

C11

C12

C13

C14

CIS

C16

C17

C18

Signal Name

-MEMR

-MEMW

SD08

SD09

SD10

SD 11

SD12

SD 13

SD14

SD15

SBHE

LA23

LA22

LA21

LA20

LA19

LA18

LA17

I/O

/0

/0

/0

/0

/0

/0

/0

/0

/0

/0

/0

/0

/0

/0

/0

/0

/0

/0

I/O Channel (C-Side, J10 through J14 and 16)

I/O Pin

D9

Dl0

D11

D12

D13

D14

DIS

D16

D17

D18

D 1

D2

D3

D4

D5

D6

D7

D8

Signal Name

-MEM CS16

-I/O CS16

IRQ10

IRQll

IRQ12

IRQ15

IRQ14

-DACKO

DRQO

-DACK5

DRQ5

-DACK6

DRQ6

-DACK7

DRQ7

+5 Vdc

-MASTER

GND

I/O

I

I

I

0

I

I

I

I

I

0

I

0

I

0

I

POWER

I

GROUND

I/O Channel (D-Side, J10 through J14 and 16)

1-30 System Board

110

Channel Signal Description

The following is a description of the system board's I/O channel signals. All signal lines are TTL compatible.

I/O

adapters should be designed with a maximum of two low-power Shottky (LS) loads per line.

SAO through SA19

(I/O)

Address signals 0 through 19 are used to address memory and

I/O devices within the system. These 20 address lines, in addition to LA17 through LA23, allow access of up to 16M of memory. SAO through SA19 are gated on the system bus when

I buffered address latch enable

I signal (BALE) is high and are latched on the falling edge of BALE. These signals are generated by the microprocessor or DMA Controller. They also may be driven by other microprocessors or DMA controllers that reside on the I/O channel.

LA17 through LA23

(I/O)

These signals (unlatched) are used to address memory and I/O devices within the system. They give the system up to 16M of addressability. These signals are valid when BALE is high. LA17 through LA23 are not latched during microprocessor cycles and therefore do not stay valid for the whole cycle. Their purpose is to generate memory decodes for 16-bit, 1 wait-state, memory cycles. These decodes should be latched by I/O adapters on the falling edge of BALE.

These signals also may be driven by other microprocessors or

DMA controllers that reside on the

I/O

channel. eLK (0)

This is the 6-MHz system

I clock

I signal. It is a synchronous microprocessor cycle clock with a cycle time of 167 nanoseconds.

The clock has a 50% duty cycle. This signal should be used only

System Board 1-31

-------'/

for synchronization. It is not intended for uses requiring a fixed frequency.

RESET DRV (0)

The

I reset drive

I signal is used to reset or initialize system logic at power-up time or during a low voltage condition. This signal is active high.

SDO through SD15

(I/O)

These signals provide bus bits 0 through 15 for the microprocessor, memory, and I/O devices. DO is the least-significant bit and D15 is the most-significant bit. AIl8-bit devices on the

I/O

channel should use DO through D7 for communications to the microprocessor. The 16-bit devices will use DO through D15. To support 8-bit devices, the data on D8 through D15 will be gated to DO through D7 during 8-bit transfers to these devices; 16-bit microprocessor transfers to 8-bit devices will be converted to two 8-bit transfers.

BALE (0) (buffered)

The

I buffered address latch enable

I signal is provided by the

82288 Bus Controller and is used on the system board to latch valid addresses and memory decodes from the microprocessor. It is available to the

I/O

channel as an indicator of a valid microprocessor or DMA address (when used with

I address enable

I signal, AEN). Microprocessor addresses SAO through

SA19 are latched with the falling edge of BALE. BALE is forced high (active) during DMA cycles.

-I/O CH CK

(I)

The

I

-I/O channel check

I signal provides the system board with .~ parity (error) information about memory or devices on the I/O channel. When this signal is active (low), it indicates a non-correctable system error.

1-32 System Board

I/O eH RDY (I)

The 'I/O channel ready' signal is pulled low (not ready) by a memory or I/O device to lengthen I/O or memory cycles. Any slow device using this line should drive it low immediately upon detecting its valid address and a Read or Write command.

Machine cycles are extended by an integral number of clock cycles (167 nanoseconds). This signal should be held low for no more than 2.5 microseconds.

IRQ3-IRQ7, IRQ9-IRQ12, IRQ14, and IRQ15 (I)

Interrupt requests 3 through 7,9 through 12,14, and 15 are used to signal the microprocessor that an I/O device needs attention.

The interrupt requests are prioritized, with IRQ9 through IRQ 12,

IRQI4, and IRQ15 having the highest priority (IRQ9 is the highest), and IRQ3 through IRQ7 having the lowest priority

(IRQ7 is the lowest). An interrupt request is generated when an

IRQ line is raised from low to high. The line is high until the microprocessor acknowledges the interrupt request (Interrupt

Service routine).

Note: Interrupt 13 is used on the system board and is not available on the I/O channel. IRQ 8 is used for the real-time clock.

-lOR (I/O)

The '-I/O read' signal instructs an I/O device to drive its data onto the data bus. This signal may be driven by the system microprocessor or DMA controller, or by a microprocessor or

DMA controller resident on the I/O channel. This signal is active low.

-lOW (I/O)

The '-I/O write' signal instructs an I/O device to read the data off the data bus. It may be driven by any microprocessor or

DMA controller in the system. This signal is active low.

System Board 1-33

-SMEMR (0) -MEMR (I/O)

These signals instruct the memory devices to drive data onto the data bus. -SMEMR is active only when the memory decode is within the low 1M of memory space. -MEMR is active on all memory read cycles. -MEMR may be driven by any microprocessor or DMA controller in the system. -SMEMR is derived from -MEMR and the decode of the low 1M of memory.

When a microprocessor on the

I/O

channel wishes to drive

-MEMR, it must have the address lines valid on the bus for one clock cycle before driving -MEMR active. Both signals are active low.

-SMEMW (0) -MEMW (I/O)

These signals instruct the memory devices to store the data present on the data bus. -SMEMW is active only when the memory decode is within the low 1M of the memory space.

-MEMW is active on all memory write cycles. -MEMW may be driven by any microprocessor or DMA controller in the system.

-SMEMW is derived from -MEMW and the decode of the low

1M of memory. When a microprocessor on the

I/O

channel wishes to drive -MEMW, it must have the address lines valid on the bus for one clock cycle before driving -MEMW active. Both signals are active low.

~

DRQO-DRQ3 and DRQ5-DRQ7

(I)

The

I

DMA request

I signals 0 through 3 and 5 through 7 are asynchronous channel requests used by peripheral devices and a microprocessor to gain DMA service (or control of the system).

They are prioritized, with DRQO having the highest priority and

DRQ7 the lowest. A request is generated by bringing a DRQ line to an active (high) level. A DRQ line is held high until the corresponding

I

DMA acknowledge

I

(DACK) line goes active.

DRQO through DRQ3 perform 8-bit DMA transfers; DRQ5 through DRQ7 perform 16-bit transfers. DRQ4 is used on the system board and is not available on the 110 channel.

1-34 System Board

-DACKO to -DACK3 and -DACK5 to -DACK7 (0)

-DMA acknowledge 0 through 3 and 5 through 7 are used to acknowledge DMA requests. These signals are active low.

AEN (0)

The

I address enable

I signal is used to degate the microprocessor and other devices from the I/O channel to allow DMA transfers to take place. When this line is active, the DMA controller has control of the address bus, the data-bus Read command lines

(memory and I/O), and the Write command lines (memory and

I/O). This signal is active high.

-REFRESH (I/O)

This signal is used to indicate a refresh cycle and can be driven by a microprocessor on the I/O channel. This signal is active low.

T/C (0)

The

I terminal count

I signal provides a high pulse when the terminal count for any DMA channel is reached.

SBHE (I/O)

The

I system bus high enable

I signal indicates a transfer of data on the upper byte of the data bus, SD8 through SD15.

Sixteen-bit devices use SBHE to condition data bus buffers tied to

SD8 through SD15. This signal is active high.

-MASTER (I)

r'""\ This signal is used with a DRQ line to gain control of the system.

A processor or DMA controller on the I/O channel may issue a

DRQ to a DMA channel in cascade mode and receive a -DACK.

Upon receiving the -DACK, a microprocessor may pull

System Board 1-35

-MASTER active (low), which will allow it to control the system address, data, and control lines (a condition known as tri-state).

After -MASTER is low, the microprocessor must wait one clock cycle before driving the address and data lines, and two clock cycles before issuing a Read or Write command. If this signal is held low for more than 15 microseconds, the system memory may be lost because of a lack of refresh.

-MEM CS16

(I)

The '-memory 16-bit chip select' signal indicates to the system that the present data transfer is a 1 wait-state, 16-bit, memory cycle. It must be derived from the decode of LA17 through

LA23. -MEM CS16 is active low and should be driven with an open collector or tri-state driver capable of sinking 20 mA.

-I/O

CS16

(I)

The '-I/O 16-bit chip select' signal indicates to the system that the present data transfer is a 16-bit, 1 wait-state, I/O cycle. It is derived from an address decode. -I/O CS16 is active low and should be driven with an open collector or tri-state driver capable of sinking 20 mA. r--...

OSC (0)

The 'oscillator' signal is a high-speed clock with a

70-nanosecond period (14.31818 MHz). This signal is not synchronous with the system clock. It has a 50% duty cycle.

OWS (I)

The 'zero wait state' signal tells the microprocessor that it can complete the present bus cycle without inserting any additional wait cycles. In order to nm a memory cycle to a 16-bit device without wait cycles, OWS is derived from an address decode gated with a Read or Write command. In order to run a memory cycle to an 8-bit device with a minimum of two wait states, OWS should

~

1-36 System Board

be driven active one clock cycle after the Read or Write command is active, and gated with the address decode for the device.

Memory Read and Write commands to an 8-bit device are active on the falling edge of eLK. OWS is active low and should be driven with an open collector or tri-state driver capable of sinking

20 rnA.

The following figure is an

I/O

address map.

Hex Range

000-01F

020-03F

040-05F

060-06F

070-07F

080-09F

DAO-OBF

OCO-ODF

OFO

OFI

DF8-0FF

Device

DMA controller I, 8237A-5

Interrupt controller I, 8259A, Master

Timer 8254-2

8042 lKeyboard)

Real-time clock, NMI (non-maskable interrupt) mask

DMA page register, 74LS612

Interrupt Controller 2, 8259A

DMA controller 2, 8237A-5

Clear Math Coprocessor Busy

Reset Math Coprocessor

Math Coprocessor

Note: I/O Addresses, hex 000 to OFF, are reserved for the system board I/O. Hex 100 to 3FF are available on the I/O channe I.

/~ I/O Address Map (Part 1 of 2)

System Board 1-37

Hex Range lFO-1F8

200-207

20C-20D

21F

278-27F

2BO-2DF

2El

2E2 & 2E3

2F8-2FF

300-31F

360-363

364-367

368-36B

36C-36F

378-37F

380-38F

390-393

3AO-3AF

3BO-3BF

3CO-3CF

3DO-3DF

3FO-3F7

3F8-3FF

6E2 & 6E3

790-793

AE2 & AE3

B90-B93

EE2 & EE3

1390-1393

22El

2390-2393

42El

62El

82El

A2El

C2El

E2El

Device

Fixed Disk

Game I/O

Reserved

Reserved

Parallel printer port 2

Alternate Enhanced Graphics Adapter

GP I B (Adapter 0)

Data Acquisition (Adapter 0)

Serial port 2

Prototype card

PC Network (low address)

Reserved

PC Network (high address)

Reserved

Parallel printer port 1

SDLC, bisynchronous 2

Cluster

Bisynchronous 1

Monochrome Display and Printer Adapter

Enhanced Graphics Adapter

Color/Graphics Monitor Adapter

Diskette controller

Serial port 1

Data Acquisition (Adapter 1)

Cluster (Adapter 1)

Data Acquisition (Adapter 2)

Cluster (Adapter 2)

Data Acquisition (Adapter 3)

Cluster (Adapter 3)

GPIB (Adapter 1)

Cluster (Adapter 4)

GPIB (Adapter 2)

GPIB (Adapter 3)

GPIB (Adapter 4)

GPIB (Adapter 5)

GPIB (Adapter 6)

GPIB (Adapter 7)

Note: I/O Addresses, hex 000 to OFF, are reserved for the system board I/O. Hex 100 to 3FF are available on the I/O channe I.

I/O Address Map (Part 2 of 2)

NMI and Coprocessor Controls

At power-on time, the non-maskable interrupt (NMI) into the

80286 is masked off. The mask bit can be set and reset with system programs as follows:

1-38 System Board

Mask On

Mask Off

Write to I/O address hex 070, with data bit 7 equal to a logic O.

Write to 1/ 0 address hex 070, with data bit 7 equal to a logic 1.

Note: At the end of POST, the system sets the NMI mask on (NMI enabled).

The following is a description of the Math Coprocessor controls.

OFO An 8-bit Out command to port FO will clear the latched

Math Coprocessor' -busy' signal. The' -busy' signal will be latched if the coprocessor asserts its '-error' signal while it is busy. The data output should be zero.

OFI An 8-bit Out command to port Fl will reset the Math

Coprocessor. The data output should be zero.

I/O address hex 080 is used as a diagnostic-checkpoint port or register. This port corresponds to a read/write register in the

DMA page register (74LS612).

The '-I/O channel check' signal (-I/O CH CK) is used to report non-correctable errors on RAM adapters on the I/O channel.

This check will create an NMI if the NMI is enabled. At power-on time, the NMI is masked off and -I/O CH CK is disabled. Follow these steps when enabling -I/O CH CK and the

NMI.

1. Write data in all I/O RAM-adapter memory locations; this will establish good parity at all locations.

2. Enable -I/O CH CK.

3. Enable the NMI.

Note: All three of these functions are performed by POST.

~

When a check occurs, an interrupt (NMI) will result. Read the status bits to determine the source of the NMI (see the figure,

"I/O Address Map", on page 1-37). To determine the location of the failing adapter, write to any memory location within a given

System Board 1-39

adapter. If the parity check was from that adapter, -I/O CH CK will be reset to inactive.

Other Circuits

Speaker

The system unit has a 2-1/4 inch permanent-magnet speaker, which can be driven from:

• The I/O-port output bit

• The timer/counter's CLK OUT 2

• Both of the above

RAM

Jumpers

The system board has a 3-pin, Berg-strip connector (JI8).

Starting at the front of the system, the pins are numbered 1 through 3. Jumper placement across these pins determines how much system board RAM is enabled. Pin assignments follow.

Pin

1

2

3

RAM Jumper Connector (J18)

Assignments

No Connection

- RAM SEL

Ground

1-40 System Board

The following shows how the jumpers affect RAM.

Jumper Positions

1 and 2

2 and 3

~

Jumper

Function

Enable 2nd 256K of system board RAM

Disable 2nd 256K of system board RAM

Note: The normal mode is the enable mode. The other mode permits the additional RAM to reside on adapters plugged into the

I/O

bus.

Display Switch

Set the slide switch on the system board to select the primary display adapter. Its positions are assigned as follows:

On (toward the front of the system unit):

The primary display is attached to the Color/Graphics Monitor Adapter or

Professional Graphics Controller.

Off (toward the rear of the system unit):

The primary display is attached to the Monochrome Display and Printer Adapter.

The switch may be set to either position if the primary display is attached to an Enhanced Graphics Adapter.

Note: The primary display is activated when the system is powered on.

Variable Capacitor

The system board has a variable capacitor. Its purpose is to adjust the 14.31818 MHz oscillator signal (OSC), used to obtain the color-burst signal required for color televisions.

System Board 1-41

Keyboard Controller

The keyboard controller is a single-chip microcomputer (Intel

8042) that is programmed to support the keyboard serial interface. The keyboard controller receives serial data from the keyboard, checks the parity of the data, translates scan codes, and r""\ presents the data to the system as a byte of data in its output buffer. The controller can interrupt the system when data is placed in its output buffer, or wait for the system to poll its status register to determine when data is available.

Data is sent the keyboard by first polling the controller's status register to determine when the input buffer is ready to accept data and then writing to the input buffer. Each byte of data is sent to the keyboard serially with an odd parity bit automatically inserted. The keyboard is required to acknowledge all data transmissions, another byte of data should not be sent to the keyboard until acknowledgement is received for the previous byte sent. The output-buffer-full interrupt may be used for both send and receive routines.

Keyboard Controller Initialization

At power on, the keyboard controller set the system flag bit to O.

After a power-on reset or the execution of the Self Test command, the keyboard controller disables the keyboard interface by forcing the

I keyboard clock

I line low. The keyboard interface parameters are specified at this time by writing to locations within the 8042 RAM. The keyboard-inhibit function is then disabled by setting the inhibit-override bit in the command byte. A hex 55 is then placed in the output buffer if no errors are detected during the self test. Any value other than hex 55 indicates that the 8042 is defective. The keyboard interface is now enabled by lifting the

I keyboard data

I and

I keyboard clock

I signal lines, and the system flag is set to 1. The keyboard controller is then ready to accept commands from the system unit microprocessor or receive keyboard data.

1-42 System Board

Receiving Data from the Keyboard

The keyboard sends data in a serial format using an 11-bit frame.

The first bit is a start bit, and is followed by eight data bits, an odd parity bit, and a stop bit. Data sent is synchronized by a clock supplied by the keyboard. At the end of a transmission, the keyboard controller disables the interface until the system accepts the byte. If the byte of data is received with a parity error, a

Resend command is automatically sent to the keyboard. If the keyboard controller is unable to receive the data correctly after a set number of retries, a hex FF is placed in its output buffer, and the parity bit in the status register is set to 1, indicating a receive parity error. The keyboard controller will also time a byte of data from the keyboard. If a keyboard transmission does not end within two milliseconds, a hex FF is placed in the keyboard controller's output buffer, and the receive time-out bit in the status register is set. No retries will be attempted on a receive time-out error.

Note: When a receive error occurs in the default mode (bits

5,6, and 7 of the command byte set to 0), hex 00 is placed in the output buffer instead of hex FF. See "Commands (I/O

Address Hex 64)" on page 1-51 for a detailed description of the command byte.

Scan Code Translation

Scan codes received from the keyboard are converted by the keyboard controller before being placed into the controller's output buffer. The following figure shows the keyboard layout.

Each key position is numbered for reference.

System Board 1-43

Keyboard

1-44 System Board

The following figure is the scan-code translation table.

System

Scan Code

19 lA lB lC

1 D

IE

IF

20

15

16

17

18

11

12

13

14

09

OA

OB

OC

OD

OE

OF

10

01

02

03

04

05

06

07

08

29

2A

2B

2C

2D

2E

2F

21

22

23

24

25

26

27

28

Keyboard

Scan Code

4D

54

5B

5A

14 lC lB

23

1 D

24

2D

2C

35

3C

43

44

3E

46

45

4E

55

66

OD

15

76

16

1 E

26

25

2E

36

3D

OE

12

5D lA

22

21

2A

2B

34

33

3B

42

4B

4C

52

Scan-Code Translation Table (Part 1 of 2)

Key

90

2

3

4

9

10

11

12

5

6

7

8

13

15

16

41

1

44

14

46

47

48

49

33

34

35

36

37

38

39

40

25

26

27

28

43

30

31

32

17

18

19

20

21

22

23

24

System Board 1-45

System

Scan Code

49

4A

4B

4C

40

4E

4F

50

41

42

43

44

45

46

47

48

51

52

53

54

39

3A

3B

3C

30

3E

3F

40

30

31

32

33

34

35

36

38

Keyboard

Scan Code

32

31

3A

41

49

4A

59

11

29

58

05

06

04

OC

03

OB

02 or 83

OA

01

09

77

7E

6C

75

70

7B

6B

73

74

79

69

72

7A

70

71

7F or 84

Scan-Code Translation Table (Part 2 of 2)

Key

91

96

101

107

92

97

102

108

72

67

73

68

74

69

95

100

93

98

103

99

104

105

61

64

70

65

71

66

50

51

52

53

54

55

57

58

1";46 System Board

The following scan codes are reserved.

Key

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved Scan-Code Translation Table

Keyboard

Scan Code

53

5C

5F

62

63

64

65

67

68

6A

60

6E

30

38

40

48

50

57

6F

56

5E

08

10

18

20

28

13

19

39

51

60

61

78

07

OF

17

IF

27

2F

37

3F

47

4F

System

Scan Code

63

64

65

66

67

68

69

6A

6B

6C

60

6E

6F

70

71

72

73

74

75

76

77

78

79

7A

7B

7C

70

7E

7F

55

56

57

58

59

5A

5B

5C

50

5E

5F

60

61

62

System Board 1-47

Sending Data to the Keyboard

The keyboard sends data in the same serial format used to receive data from the keyboard. A parity bit is automatically inserted by the keyboard controller. If the keyboard does not start clocking the data from the keyboard controller within 15 milliseconds, or complete that clocking within 2 milliseconds, a hex FE is placed in the keyboard controller's output buffer, and the transmit time-out error bit is set in the status register.

The keyboard is required to respond to all transmissions. The keyboard responds to any valid command and parameter, other than Echo and Resend, with an Acknowledge (ACK) response, hex FA. If the response contains a parity error, the keyboard controller places a hex FE in its output buffer, and the transmit time-out and parity error bits are set in the status register. The keyboard controller is programmed to set a 25-millisecond time limit for the keyboard to respond. If this time limit is exceeded, the keyboard controller places a hex FE in its output buffer and sets the transmit time-out and receive time-out error bits in the status register. No retries are attempted by the keyboard controller for any transmission error.

Inhibit

The keyboard interface may be inhibited by setting input port bit

7 (keyboard inhibit switch) to O. All transmissions to the keyboard will be allowed regardless of the state of this bit. The keyboard controller tests data received from the keyboard to determine if the byte received is a command response or a scan code. If the byte is a command response, it is placed in the keyboard controller's output buffer. If the byte is a scan code, it is ignored.

Keyboard Controller System Interface

The keyboard controller communicates with the system through a ~ status register, an output buffer, and an input buffer. The following figure is a block diagram of the keyboard interface.

1-48 System Board

System

Data

Bus

=-i.---

RAM on the system board

N .--- Manufacturing mode p .--Display type

U

T .--- Keyboard Inhibited

Input

Buffer

+----1'-....

=======

Buffer

.

~ ~ == ~~~~e~2~eset

1 - - - U IRQ I

T Keyboard Clock---,-+

TPu -

,--2_K_Rg_~_8----,~

------iill]

+-_ _ _ _ _ _---'

Keyboard Controller Interface Block Diagram

Status Register

The status register is an 8-bit read-only register at I/O address hex 64. It has information about the state of the keyboard controller (8042) and interface. It may be read at any time.

Status-Register Bit Definition

Bit 7 Parity Error-A 0 indicates the last byte of data received from the keyboard had odd parity. A 1 indicates the last byte had even parity. The keyboard should send data with odd parity.

Bit 6 Receive Time-Out-A 1 indicates that a transmission was started by the keyboard but did not finish within the programmed receive time-out delay.

Transmit Time-Out-A 1 indicates that a transmission started by the keyboard controller was not properly completed. If the transmit byte was not clocked out within the specified time limit, this will be the only error.

System Board 1-49

If the transmit byte was clocked out but a response was not received within the programmed time limit, the transmit time-out and receive time-out error bits are set to 1. If the transmit byte was clocked out but the response was received with a parity error, the transmit time-out and parity error bits are set to 1.

Bit 4 Inhibit Switch-This bit is updated whenever data is placed in the keyboard controller's output buffer. It reflects the state of the keyboard-inhibit switch. A 0 indicates the keyboard is inhibited.

Bit 3 Command/Data-The keyboard controller's input buffer may be addressed as either I/O address hex 60 or 64.

Address hex 60 is defined as the data port, and address hex 64 is defined as the command port. Writing to address hex 64 sets this bit to 1; writing to address hex 60 sets this bit to O. The controller uses this bit to determine if the byte in its input buffer should be interpreted as a command byte or a data byte.

Bit 2 System Flag-This bit is monitored by the system during the reset routine. If it is a 0, the reset was caused by a power on. The controller sets this bit to 0 at power on and it is set to 1 after a successful self test. This bit can be changed by writing to the system flag bit in the command byte (hex 64).

~

Bit 1 Input Buffer Full-A 0 indicates that the keyboard controller's input buffer (I/O address hex 60 or 64) is empty. A 1 indicates that data has been written into the buffer but the controller has not read the data. When the controller reads the input buffer, this bit will return to O.

Bit 0 Output Buffer Full-A 0 indicates that the keyboard controller's output buffer has no data. A 1 indicates that the controller has placed data into its output buffer but the system has not yet read the data. When the system reads the output buffer (I/O address hex 60), this bit will return to a O. ~

1-50 System Board

Output Buffer

The output buffer is an 8-bit read-only register at I/O address hex 60. The keyboard controller uses the output buffer to send scan codes received from the keyboard, and data bytes requested

/"""""-.. by command, to the system. The output buffer should be read only when the output-buffer-full bit in the status register is 1.

Input Buffer

The input buffer is an 8-bit write-only register at 110 address hex

60 or 64. Writing to address hex 60 sets a flag, which indicates a data write; writing to address hex 64 sets a flag, indicating a command write. Data written to 110 address hex 60 is sent to the keyboard, unless the keyboard controller is expecting a data byte following a controller command. Data should be written to the controller's input buffer only if the input buffer's full bit in the status register is O. The following are valid keyboard controller commands.

Commands (I/O Address Hex 64)

20

60

Read Keyboard Controller's Command Byte-The controller sends its current command byte to its output buffer.

Write Keyboard Controller's Command Byte-The next byte of data written to 110 address hex 60 is placed in the controller's command byte. Bit definitions of the command byte are as follows:

Bit 7 Reserved-Should be written as a O.

Bit 6 IBM Personal Computer Compatibility

Mode-Writing a 1 to this bit causes the controller to convert the scan codes received from the keyboard to those used by the IBM

Personal Computer. This includes converting a

2-byte break sequence to the I-byte IBM

Personal Computer format.

System Board 1-51

Bit 5 IBM Personal Computer Mode-Writing a 1 to this bit programs the keyboard to support the

IBM Personal Computer keyboard interface. In this mode the controller does not check parity or convert scan codes.

Bit 4 Disable Keyboard-Writing a 1 to this bit disables the keyboard interface by driving the

I clock

I line low. Data is not sent or received.

Bit 3 Inhibit Override-Writing a 1 to this bit disables the keyboard inhibit function.

Bit 2 System Flag-The value written to this bit is placed in the system flag bit of the controller's status register.

Bit 1 Reserved-Should be written as a O.

Bit 0 Enable Output-Buffer-Full Interrupt-Writing a

1 to this bit causes the controller to generate an interrupt when it places data into its output buffer.

AA Self-Test-This commands the controller to perform internal diagnostic tests. A hex 55 is placed in the output buffer if no errors are detected.

.~

AB Interface Test-This commands the controller to test the

I keyboard clock

I and

I keyboard data

I lines. The test result is placed in the output buffer as follows:

00

01

02

03

04

No error detected.

The

I keyboard clock

I line is stuck low.

The

I keyboard clock

I line is stuck high.

The

I keyboard data

I line is stuck low.

The

I keyboard data

I line is stuck high.

1-52 System Board

AC Diagnostic Dump-Sends 16 bytes of the controller's

RAM, the current state of the input port, the current state of the output port, and the controller's program status word to the system. All items are sent in scan-code format.

~

AD Disable Keyboard Feature-This command sets bit 4 of the controller's command byte. This disables the keyboard interface by driving the clock line low. Data will not be sent or received.

AE Enable Keyboard Interface-This command clears bit 4 of the command byte, which releases the keyboard interface.

CO Read Input Port-This commands the controller to read its input port and place the data in its output buffer. This command should be used only if the output buffer is empty.

DO Read Output Port-This command causes the controller to read its output port and place the data in its output

~ buffer. This command should be issued only if the output buffer is empty.

Dl Write Output Port-The next byte of data written to I/O address hex 60 is placed in the controller's output port.

Note: Bit 0 of the controller's output port is connected to System Reset. This bit should not be written low as it will reset the microprocessor.

EO Read Test Inputs-This command causes the controller to read its TO and T1 inputs. This data is placed in the output buffer. Data bit 0 represents TO, and data bit 1 represents Tl.

System Board 1-53

FO-FF Pulse Output Port-Bits 0 through 3 of the controller's output port may be pulsed low for approximately 6 microseconds. Bits 0 through 3 of this command indicate which bits are to be pulsed. A 0 indicates that the bit should be pulsed, and a 1 indicates the bit should not be modified.

Note: Bit 0 of the controller's output port is connected to System Reset. Pulsing this bit resets the microprocessor.

I/O Ports

The keyboard controller has two I/O ports, one assigned for input and the other for output. Two test inputs are used by the controller to read the state of the keyboard's

I clock

I

(TO) and

I data

I

(Tl) lines.

The following figures show bit definitions for the input and output ports, and the test-inputs.

1-54 System Board

Bit 7 Keyboard inhibit switch

o

= Keyboard inhibited

1 = Keyboard not inhibited

Bit 6 Display switch - Primary display attached to:

o

= Color/Graphics adapter

1

=

Monochrome adapter

Bit 5 Manufacturing Jumper

o

= Manufacturing jumper installed

1 = Jumper not installed

Bit 4 RAM on the system board

o

= Enable 512K of system board RAM

1 = Enable 256K of system board RAM

Bit 3 Reserved

Bit 2 Reserved

Bit 1 Reserved

Bit 0 Reserved

Input-Port Bit Definitions

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Keyboard data (output)

Keyboard clock (output)

Input buffer empty

Output buffer full

Reserved

Reserved

Gate A20

System reset

Output-Port Bit De"finitions

Keyboard data (input)

Keyboard clock (input)

Test-Input Bit Definitions

System Board 1-55

Real-Time Clock/CMOS RAM Information

The RT/CMOS RAM chip (Motorola MC146818) contains the real-time clock and 64 bytes of CMOS RAM. The internal clock circuitry uses 14 bytes of this RAM, and the rest is allocated to configuration information. The following figure shows the CMOS ~

RAM addresses.

Addresses Description

00 - OD

DE

OF

10

11

12

13

14

15

16

17

18

19 lA lB 2D

*

Real-time clock information

*

Diagnostic status byte

*

Shutdown status byte

Diskette drive type byte - drives A and B

Reserved

Fixed disk type byte - types 1-14

Reserved

Equipment byte

Low base memory byte

High base memory byte

Low expansion memory byte

High expansion memory byte

Disk C extended byte

Disk D extended byte

Reserved

2E - 2F

30

31

32

2-byte CMOS checksum

*

Low expansion memory byte

*

High expansion memory byte

*

Date century byte

33

*

Information flags (set during power on)

34 - 3F Reserved

CMOS RAM Address Map

*

These bytes are not included in the checksum calculation and are not part of the configuration record.

1-56 System Board

Real-Time Clock Information

The following figure describes real-time clock bytes and specifies their addresses.

.~

Byte

0

1

2

3

4

9

10

11

12

13

5

6

7

8

Function

Seconds

Second Alarm

Minutes

Minute Alarm

Hours

Hour Alarm

Day of Week

Date of Month

Month

Year

Status Register A

Status Register B

Status Register C

Status Register D

Address

00

01

02

03

04

05

06

07

08

09

OA

OB

OC aD

Real-Time Clock Information (Addresses 00 - 00'

Note: The setup program initializes registers A, B, C, and

D when the time and date are set. Also Interrupt lA is the

BIOS interface to read/set the time and date. It initializes the status bytes the same as the Setup program.

Status Register A

Bit 7 Update in Progress (UIP)-A 1 indicates the time update cycle is in progress. A 0 indicates the current date and time are available to read.

Bit 6-Bit 4 22-Stage Divider (DV2 through DVO)-These three divider-selection bits identify which time-base frequency is being used. The system initializes the stage divider to OlD, which selects a

32.768-kHz time base.

System Board 1-57

Bit 3-Bit 0 Rate Selection Bits (RS3 through RSO)-These bits allow the selection of a divider output frequency. The system initializes the rate selection bits to 0110, which selects a 1.024-kHz square wave output frequency and a

976.562-microsecond periodic interrupt rate. ".-.....

Status Register B

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Set-A 0 updates the cycle normally by advancing the counts at one-per-second. A 1 aborts any update cycle in progress and the program can initialize the 14 time-bytes without any further updates occurring until a 0 is written to this bit.

Periodic Interrupt Enable (PIE)-This bit is a read/write bit that allows an interrupt to occur at a rate specified by the rate and divider bits in register A. A 1 enables an interrupt, and a 0 disables it. The system initializes this bit to O.

Alarm Interrupt Enable (AIE)-A 1 enables the alarm interrupt, and a 0 disables it. The system initializes this bit to O.

Update-Ended Interrupt Enabled (UIE)-A 1 enables the update-ended interrupt, and a 0 disables it. The system initializes this bit to O.

Square Wave Enabled (SQWE)-A 1 enables the the square-wave frequency as set by the rate selection bits in register A, and a 0 disables the square wave. The system initializes this bit to O.

Date Mode (DM)-This bit indicates whether the time and date calendar updates are to use binary or binary coded decimal (BCD) formats.

A 1 indicates binary, and a 0 indicates BCD. The system initializes this bit to

o.

1-58 System Board

Bit 1

Bit 0

24/12-This bit indicates whether the hours byte is in the 24-hour or 12-hour mode. A 1 indicates the 24-hour mode and a 0 indicates the 12-hour mode. The system initializes this bit to 1.

Daylight Savings Enabled (DSE)-A 1 enables daylight savings and a 0 disables daylight savings

(standard time). The system initializes this bit to o.

Status Register C

Bit 7-Bit 4 IRQF, PF, AF, VF-These flag bits are read-only and are affected when the AlE, PIE, and VIE bits in register B are set to 1.

Bit 3-Bit 0 Reserved-Should be written as a O.

Status Register D

Bit 7 Valid RAM Bit (VRB)-This bit is read-only and indicates the status of the power-sense pin

(battery level). A 1 indicates battery power to the real-time clock is good. A 0 indicates the battery is dead, so RAM is not valid.

Bits 6-Bit 0 Reserved-Should be written as a O.

CMOS RAM Configuration Information

The following lists show bit definitions for the CMOS configuration bytes (addresses hex OE - 3F).

Diagnostic Status Byte (Hex OE)

Bit 7 Power status of the real-time clock chip-A 0 indicates that the chip has not lost power, and a 1 indicates that the chip lost power.

System Board 1-59

Bit 6

Bit S

Bit 4

Bit 3

Bit 2

Bit 1-Bit 0

Configuration Record (Checksum Status

Indicator)-A 0 indicates that checksum is good, and a 1 indicates it is bad.

Incorrect Configuration Information-This is a check, at power-on time, of the equipment byte of the configuration record. A 0 indicates that the configuration information is valid, and a 1 indicates it is invalid. Power-on checks require:

• At least one diskette drive to be installed (bit o of the equipment byte set to 1).

• The primary display adapter setting in configuration matches the system board's display switch setting and the actual display adapter hardware in the system.

Memory Size Comparison-A 0 indicates that the power-on check determined the same memory size as in the configuration record, and a 1 indicates the memory size is different.

Fixed Disk Adapter/Drive C Initialization

Status-A 0 indicates that the adapter and drive are functioning properly and the system can attempt "boot up." A 1 indicates that the adapter and/or drive C failed initialization, which prevents the system from attempting to "boot up."

Time Status Indicator (POST validity check)- A o indicates that the time is valid, and a 1 indicates that it is invalid.

Reserved

1-60 System Board

Shutdown Status Byte (Hex OF)

The bits in this byte are defined by the power on diagnostics. For more information about this byte, see "BIOS Listing. "

Diskette Drive Type Byte (Hex 10)

Bit 7-Bit 4

Bit 3-Bit 0

Type of first diskette drive installed:

0000

0001

0010

No drive is present.

Double Sided Diskette Drive (48 TPI).

High Capacity Diskette Drive (96 TPI).

Note: 0011 through 1111 are reserved.

Type of second diskette drive installed:

0000

0001

0010

No drive is present.

Double Sided Diskette Drive (48 TPI).

High Capacity Diskette Drive (96 TPI).

Note: 0011 through 1111 are reserved.

Hex address 11 contains a reserved byte.

System Board 1-61

Fixed Disk Type Byte (Hex 12)

Bit 7-Bit 4

Bit 3-Bit 0

Defines the type of first fixed disk drive installed

(drive C):

0000 No fixed disk drive is present.

0001 Define type 1 through type 14 as shown to

1110 in the following table (also see BIOS listing at label FD_TBL)

1111 Type 16 through 255. See "Drive C

Extended Byte (Hex 19)" on page 1-65 .

Defines the type of second fixed disk drive installed (drive D):

0000 No fixed disk drive is present.

0001 Define type 1 through type 14 as shown to in the following table (also see BIOS

1110 listing at label FD_TBL)

1111 Type 16 through 255. See "Drive D

Extended Byte (Hex lA)" on page 1-65 .

1-62 System Board

The following figure shows the BIOS fixed disk parameters.

Wr ite

Type Cylinders Heads Pre-Comp

1

2

7

8

9

10

11

12

13

14

3

4

5

6

15

733

900

820

855

855

306

733

306

615

615

940

940

615

462

4

4

6

8

6

4

8

5

15

3

5

7

8

7

128

300

300

512

512

None

256

None

None

None

None

None

128

None

Landing

Zone

305

615

615

940

940

615

511

733

901

820

855

855

319

733

Extended Parameters (hex 19 and 1A)

BIOS Fixed Disk Parameters

Hex address 13 contains a reserved byte.

Equipment Byte (Hex 14)

Bit 7-Bit 6

Bit 5-Bit 4

Indicates the number of diskette drives installed:

00

01

10

11

1 drive

2 drives

Reserved

Reserved

Primary display

00 Primary display is attached to an adapter that has its own BIOS, such as one of the following:

• the Enhanced Graphics Adapter

• the Professional Graphics Controller.

System Board 1-63

Bit 3-Bit 2

Bit 1

01 Primary display is in the 40-column mode and attached to the Color/Graphics

Monitor Adapter.

10 Primary display is in the 80-column mode and attached to the Color/Graphics

Monitor Adapter.

11 Primary display is attached to the

Monochrome Display and Printer Adapter.

Not used.

Math Coprocessor presence bit:

o

Math Coprocessor not installed

1 Math Coprocessor installed

Bit 0 Diskette drive presence bit: o

Diskette drive not installed

1 Diskette drive installed

Note: The equipment byte defines basic equipment in the system for power-on diagnostics.

Low and High Base Memory Bytes (Hex 15 and 16)

Bit 7-Bit 0

Bit 7-Bit 0

Address hex I5-Low-byte base size

Address hex I6-High-byte base size

Valid Sizes:

0100H

0200H

0280H

256K-system board RAM

5I2K-system board RAM

640K-5I2K system board RAM and the IBM Personal Computer

AT 128KB Memory Expansion

Option

1-64 System Board

Low and High Expansion Memory Bytes (Hex 17 and 18)

Bit 7-Bit 0

Bit 7-Bit 0

Address hex 17-Low-byte expansion size

Address hex 18-High-byte expansion size

Valid Sizes:

0200H

0400H

0600H

3COOH

512K-1/0 adapter

1024K-I/0 adapter (2 adapters)

1536K-I/0 adapter (3 adapters) through

15360K I/O adapter (I5M maximum).

Drive C Extended Byte (Hex 19)

Bit 7-Bit 0 Defines the type of first fixed disk drive installed

(drive C):

00000000 through 00001111 are reserved.

00010000 to 11111111 define type 16 through 255 as shown in the following table

(see BIOS listing at label FD_TBL).

Drive D Extended Byte (Hex lA)

Bit 7-Bit 0 Defines the type of second fixed disk drive installed (drive D):

00000000 through 00001111 are reserved.

00010000 to 11111111 define type 16 through 255 as shown in the following table

(see BIOS listing at label FD_TBL).

System Board

1-65

The following figure shows the BIOS fixed disk parameters for fixed disk drive types 16 through 22.

Note: Types 23 through 255 are reserved.

Type Cylinders Heads

16

17

18

19

20

21

22

23

612

977

977

1024

733

733

733

4

5

7

7

5

7

7

Write

Pre-Comp

Reserved

All Cyl

300

None

512

300

300

300

255 Reserved

BIOS Fixed Disk Parameters (Extended)

Hex addresses IB through 2D are reserved.

Landing

Zone

663

977

977

1023

732

732

733

Checkswn (Hex 2E

and

2F)

Bit 7-Bit 0

Bit 7-Bit 0

Address hex 2E-High byte of checksum

Address hex 2F-Low byte of checksum

Note: Checksum is calculated on addresses hex 10-2D.

1-66 System Board

Low and High Expansion Memory Bytes (Hex 30 and 31)

Bit 7-Bit 0

Bit 7-Bit 0

Address hex 30-Low-byte expansion size

Address hex 31-High-byte expansion size

Valid Sizes:

0200H

0400H

0600H

3COOH

512K-I/O adapter

1024K-I/0 adapter

1536K-I/0 adapter through

15360K I/O adapter (15M maximum).

Note:

This word reflects the total expansion memory above the 1M address space as determined at power-on time. This expansion memory size can be determined through system interrupt 15 (see the BIOS listing). The base memory at power-on time is determined through the system memory-size-determine interrupt (hex 12).

Date Century Byte (Hex 32)

Bit 7-Bit 0 BCD value for the century (BIOS interface to read and set).

Information

Flag

(Hex 33)

Bit 7

Bit 6

When set, this bit indicates that the top 128K of base memory is installed.

This bit is set to instruct the Setup utility to put out a first user message after initial setup.

Bit 5-Bit 0 Reserved

Hex addresses 34 through 3F are reserved.

System Board 1-67

110

Operations

Writing to CMOS RAM involves two steps:

1. OUT to port hex 70 with the CMOS address that will be written to.

2. OUT to port hex 71 with the data to be written.

Reading CMOS RAM also requires two steps:

1. OUT to port hex 70 with the CMOS address that is to be read from.

2. IN from port hex 71, and the data read is returned in the AL register.

1-68 System Board

Specific a tiODS

~

System Unit

Size

• Length: 540 millimeters (21.3 inches)

• Depth: 439 millimeters (17.3 inches)

• Height: 162 millimeters (6.8 inches)

Weight

• 20.0 kilograms (44 pounds)

Power Cables

• Length: 1.8 meters (6 feet)

Environment

• Air Temperature

System On: 15.6 to 32.2 degrees C (60 to 90 degrees F)

System Off: 10 to 43 degrees C (50 to 110 degrees F)

• Wet Bulb Temperature

System On: 22.8 degrees C (73 degrees F)

System Off: 26.7 degrees C (80 degrees F)

System Board 1-69

• Humidity

System On: 8% to 80%

System Off: 20% to 80%

• Altitude

Maximum altitude: 2133.6 meters (7000 feet)

Heat Output

• 1229 British Thermal Units (BTU) per hour

Noise Level

• Meets Class 3; 59 decibels average-noise rating (without printer)

Electrical

• Power: 450 V A

• Range 1

Nominal: 115 Vac

Minimum: 100 Vac

Maximum: 125 Vac

• Range 2

Nominal: 230 Vac

Minimum: 200 Vac

Maximum: 240 Vac

~\

1-70 System Board

Connectors

The system board has the following additional connectors:

• Two power-supply connectors (PS8 and PS9)

~

•

Speaker connector (119)

• Power LED and key lock connector (120)

• Battery connector (121)

•

Keyboard connector (122)

The pin assignments for the power-supply connectors, PS8 and

PS9, are as follows. The pins are numbered 1 through 6 from the rear of the system.

Connector Pin Assignments ps8

1

2

3

4

5

6

Power Good

+5 Vdc

+12 Vdc

-12 Vdc

Ground

Ground

PS9

1

2

3

4

5

6

Ground

Ground

-5 Vdc

+5 Vdc

+5 Vdc

+5 Vdc

Power Supply Connectors IPsa, PSg)

System Board 1-71

The speaker connector, J19, is a 4-pin, keyed, Berg strip. The pins are numbered 1 through 4 from the front of the system. The pin assignments are as follows:

Pin

1

2

3

4

Function

Data out

Key

Ground

+5 Vdc

Speaker Connector (J19)

The power LED and key lock connector, J20, is a 5-pin Berg strip. The pins are numbered 1 through 5 from the front of the system. The pin assignments are as follows:

Pin

1

2

3

4

5

Assignments

LED Power

Key

Ground

Keyboard Inhibit

Ground

Power LED and Key Lock Connector (J20)

The battery connector, J21, is a 4-pin, keyed, Berg strip. The pins are numbered 1 through 4 from the right of the system. The pin assignments are as follows:

Pin

1

2

3

4

Assignments

Ground

Not Used

Key

6 Vdc

Battery Connector (J21)

1-72 System Board

The keyboard connector, J22, is as-pin, 90-degree Printed

Circuit Board (PCB) mounting, DIN connector. For pin numbering, see the "Keyboard" Section. The pin assignments are as follows:

Pin

1

2

3

4

5

Assignments

Keyboard Clock

Keyboard Data

Reserved

Ground

+5 Vdc

Keyboard Connector (J22)

System Board 1-73

The following figure shows the layout of the system board.

Rear Panel

Keyboard

Connector

~:::::;;;oj~

Battery

Connector

(J21)

Power

Supply

Connectors

1/0

Channel

Connectors

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1-7 4 System Board

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SECTION 2. COPROCESSOR

Contents

Description ...................................... 2-3

Programming Interface ............................. 2-3

Hardware Interface .....................•••..•..... 2-4

Coprocessor 2-1

Notes:

,~

2-2 Coprocessor

Description

The IBM Personal Computer AT Math Coprocessor enables the

IBM Personal Computer AT to perform high-speed arithmetic,

,,-........ logarithmic functions, and trigonometric operations.

The coprocessor works in parallel with the microprocessor. The parallel operation decreases operating time by allowing the coprocessor to do mathematical calculations while the microprocessor continues to do other functions.

The coprocessor works with seven numeric data types, which are divided into the following three classes:

• Binary integers (3 types)

• Decimal integers (1 type)

• Real numbers (3 types)

Programming Interface

The coprocessor offers extended data types, registers, and instructions to the microprocessor.

The coprocessor has eight 80-bit registers, which provides the equivalent capacity of forty 16-bit registers. This register space allows constants and temporary results to be held in registers during calculations, thus reducing memory access and improving speed as well as bus availability. The register space can be used as a stack or as a fixed register set. When used as a stack, only the top two stack elements are operated on.

Coprocessor 2-3

The following figure shows representations of large and small numbers in each data type.

Data Type

Word Integer 16

Short Integer 32

Long Integer 64

Packed Decimal 80

Short Real I<

Long Real I<

32

64

Temporary Real 80

Significant

Digits

Bits (Decimal) Approximate Range (Decimal)

4

9

19

18

6-7

-32,768 ~ x ~ +32,767

-2x109 ~ x ~ +2xl0 9

-9x 1 018

$ x ~ +9x 1 0 18

-9 .. 99 ~ x

$

+9 .. 99 (18 digits)

8.43xl0·37 ~ x

~

3.37xl0 38

15-16 4. 19x 10-307

~ x ~

1.67xl0 308

19 3 . 4x 10-4932

~ x ~

1.2xl0 4932

Data Types

*

The Short Real and Long Real data types correspond to the single and double precision data types.

Hardware Interface

The coprocessor uses the same clock generator as the microprocessor. It works at one-third the frequency of the system microprocessor (2.66 MHz). The coprocessor is wired so that it functions as an I/O device through I/O port addresses hex OOF8,

OOF A, and OOFC. The microprocessor sends OP codes and operands through these I/O ports. The microprocessor also receives and stores results through the same I/O ports. The coprocessor's

I busy

I signal informs the microprocessor that it is executing; the microprocessor's Wait instruction forces the microprocessor to wait until the coprocessor is finished executing.

The coprocessor detects six different exception conditions that can occur during instruction execution. If the appropriate exception mask within the coprocessor is not set, the coprocessor sets its error signal. This error signal generates a hardware interrupt (interrupt 13) and causes the

I busy

I signal to the coprocessor to be held in the busy state. The

I busy

I signal may

2-4 Coprocessor

be cleared by an 8-bit I/O Write command to address hex FO with DO through D7 equal to O.

The power-on self-test code in the system ROM enables IRQ 13 and sets up its vector to point to a routine in ROM. The ROM routine clears the

I busy

I signal's latch and then transfers control to the address pointed to by the NMI interrupt vector. This allows code written for any IBM Personal Computer to work on an IBM Personal Computer AT. The NMI interrupt handler should read the coprocessor's status to determine if the NMI was caused by the coprocessor. If the interrupt was not generated by the coprocessor, control should be passed to the original NMI interrupt handler.

The coprocessor has two operating modes similar to the two modes of the microprocessor. When reset by a power-on reset, system reset, or an I/O write operation to port hex 00F1, the coprocessor is in the real address mode. This mode is compatible with the 8087 Math Coprocessor used in other IBM Personal

Computers. The coprocessor can be placed in the protected mode by executing the SETPM ESC instruction. It can be placed back in the real mode by an I/O write operation to port hex 00F1, with

D7 through DO equal to O.

The coprocessor instruction extensions to the microprocessor can be found in Section 6 of this manual.

Detailed information for the internal functions of the Intel 80287

Coprocessor can be found in books listed in the bibliography.

Coprocessor 2-5

Notes:

2-6 Coprocessor

SECTION 3. POWER SUPPLY

Contents

Inputs ....•.•.......•..••..•.......•..••••...... 3-3

Outputs ......•.•••••.........•••.••.......•.•..• 3-4

DC Output Protection •........••••••..........•••.• 3-4

Output Voltage Sequencing .•...........•••.......... 3-4

No-Load Operation .......•........•...••...•...... 3-5

Power-Good Signal ••••••.••••••••••••••••••••••••• 3-5

Load Resistor ............................... 3-5

~ Connectors. . • . . . . . . . . . • • . . • . . . . . . . . . . . • . . . . . . . .. 3-7

Power Supply 3-1

Notes:

3-2 Power Supply

The system power supply is contained inside of the system unit and provides power for the system board, the adapters, the diskette drives, the fixed disk drives, the keyboard, and the IBM

Monochrome Display.

Inputs

The power supply can operate at a frequency of either 60 ± 3 Hz or 50 ±3 Hz and it can operate at Ito Vac, 5 A or 220/240 Vac,

2.5 A. The voltage is selected with the switch above the power-cord plug at the rear of the power supply. The following figure shows the input requirements.

Range

115 Vac

Vo Itage (Vac)

Minimum 100

Maximum 125

Current (Amperes)

Maximum 5

230 Vac

Minimum 200

Maximum 240

Input Requirements

Maximum 3.0

Note: The maximum in-rush current is toO A.

Power Supply 3-3

Outputs

The power supply provides +5, -5, + 12, and -12 Vdc. The following figure shows the load current and regulation tolerance for these voltages. The power supply also supplies either 115 Vac r"., or 230 Vac for the IBM Monochrome Display.

Nominal

Output

+5 Vdc

-5 Vdc

+12 Vdc

-12 Vdc

Load Current (A)

Min Max

7.0

0.0

2.5

0.0

19.8

0.3

7.3

0.3

DC Load Requirements

Regulation

Tolerance

+5% to -4%

+10% to -8%

+5% to -4%

+10% to -9%

DC Output Protection

If any output becomes overloaded, the power supply will switch

Off within 20 milliseconds. An overcurrent condition will not damage the power supply. r"',

Output Voltage Sequencing

Under normal conditions, the output voltage levels track within

300 milliseconds of each other when power is applied to, or removed from the power supply, provided at least minimum loading is present.

3-4 Power Supply

No-Load Operation

No damage or hazardous conditions occur when primary power is applied with no load on any output level. In such cases, the required. The power supply requires a minimum load for proper operation.

Power-Good Signal

The power supply provides a

I power-good

I signal to indicate proper operation of the power supply.

When the supply is switched off for a minimum of one second and then switched on, the

I power-good

I signal is generated, assuming there are no problems. This signal is a logical AND of the dc output-voltage sense signal and the ac input-voltage sense signal.

~ The

I power-good

I signal is also a TTL-compatible high level for normal operation, or a low level for fault conditions. The ac fail signal causes

I power-good

I to go to a low level at least one millisecond before any output voltage falls below the regulation limits. The operating point used as a reference for measuring the one millisecond is normal operation at minimum line voltage and maximum load.

Load Resistor

If no fixed disk drive is connected to the power supply, the load resistor must be connected to PIO. The load resistor is a 5 ohm,

50 watt resistor.

Power Supply 3-5

The dc output-voltage sense signal holds the

I power-good

I signal at a low level when power is switched on until all output voltages have reached their minimum sense levels. The

I power-good

I signal has a turn-on delay of at least 100 milliseconds but not longer than 500 milliseconds and can drive six standard TTL loads.

The following figure shows the minimum sense levels for the output voltages.

Level (Vdc)

+5

-5

+12

-12

Sense Level

Minimum (Vdc)

+4.5

-3.75

+10.8

-10.4

3-6 Power Supply

Connectors

The following figure shows the pin assignments for the power-supply output connectors.

Load Point

PS8-1

PS8-2

PSB-3 psB-4

PSB-5 psB-6

PS9-1

PS9-2

PS9-3

PS9-4

PS9-5

PS9-6

Pl0-1

Pl0-2

Pl0-3

Pl0-4

P11-1

P 11-2

P 11-3

P 11-4

P12-1

P12-2

P12-3

P12-4

Vo J tage (Vdc)

Power Good

+5

+12

-12

Ground

Ground

Ground

Ground

-5

+5

+5

+5

+12

Ground

Ground

+5

+12

Ground

Ground

+5

+12

Ground

Ground

+5

DC Load Distribution

Max.

Current (A)

See Note

3.B

0.7

0.3

0.0

0.0

2.B

0.0

0.0

I.B

1.0

0.0

0.0

0.6

0.0

0.0

0.3

3.B

3.B

3.B

2.B

0.0

0.0

I.B

Note: For more details, see "Power-Good Signal".

Power Supply 3-7

Notes:

3-8 Power Supply

SECTION 4. KEYBOARD

Contents

Description ................................... 4-3

Cabling ................................... 4-3

Sequencing Key Code Scanning ................. 4-3

Keyboard Buffer ............................ 4-3

Keys ...................................... 4-4

Power-On Routine ................••.••........... 4-4

Power-On Reset ............................ 4-4

Basic Assurance Test ......................... 4-4

Commands from the System ...•••••.••.....••.••••.•• 4-5

Reset (Hex FF) .........................•... 4..5

Resend (Hex FE) ............................ 4-6

No-Operation (NOP) (Hex FD through F7) ....... 4-6

Set Default (Hex F6) ......................... 4-6

Default Disable (Hex F5) ..................... 4-6

Enable (Hex F4) ............................ 4-6

Set Typematic Rate/Delay (Hex F3) ............ 4-7

No-Operation (NOP) (Hex F2 through EF) ....... 4-8

Echo (Hex EE) ............................. 4-8

Set/Reset Mode Indicators (Hex ED) ............ 4-8

Commands to the System .•••...........•............ 4-9

Resend (Hex FE) ............................ 4-9

ACK (Hex FA) ............................. 4-9

Overrun (Hex 00) ........•................. 4-10

Diagnostic Failure (Hex FD) .................. 4-10

Break Code Prefix (Hex FO) .................. 4-10

BAT Completion Code (Hex AA) .............. 4-10

ECHO Response (Hex EE) ................... 4-10

Keyboard Scan-Code Outputs ...•....•.•.......•..•• 4-11

Keyboard 4-1

Clock and Data Signals .............•.............. 4-12

Keyboard Data Output ...................... 4-13

Keyboard Data Input ........................ 4-13

Keyboard Layouts ••......•.•••....••.•....•..•... 4-15

FrenchKeyboard ........................... 4-16

German Keyboard .......................... 4-17

Italian Keyboard ........................... 4-18

Spanish Keyboard .......................... 4-19

U.K. English Keyboard ...................... 4-20

U.S. English Keyboard ....................... 4-21

I"'"'

Specifications .•................................. 4-22

Size ..................................... 4-22

Weight ................................... 4-22

Logic Diagram 4-23

4-2 Keyboard

Description

The keyboard is a low-profile, 84-key, detachable unit. A bidirectional serial interface in the keyboard is used to carry signals between the keyboard and system unit.

Cabling

The keyboard cable connects to the system board through a 5-pin

DIN connector. The following figure lists the connector pins and their signals.

DIN Connector Pins

1

2

3

4

5

Signal Name

+KBD ClK

+KBD DATA

Reserved

Ground

+5.0 Vdc

Sequencing Key Code Scanning

The keyboard is able to detect all keys that are pressed, and their scan codes will be sent to the interface in correct sequence, regardless of the number of keys held down. Keystrokes entered while the interface is inhibited (when the key lock is on) will be lost. Keystrokes are stored only when the keyboard is not serviced by the system.

Keyboard Buffer

The keyboard has a 16-character first-in-first-out (FIFO) buffer where data is stored until the interface is ready to receive it.

A buffer-overrun condition will occur if more than sixteen codes are placed in the buffer before the first keyed data is sent. The

,..-...., seventeenth code will be replaced with the overrun code, hex 00.

(The 17th position is reserved for overrun codes). If more keys are pressed before the system allows a keyboard output, the data will be lost. When the keyboard is allowed to send data, the

Keyboard 4-3

characters in the buffer will be sent as in normal operation, and new data entered will be detected and sent.

Keys

All keys are classified as make/break, which means when a key is pressed, the keyboard sends a make code for that key to the keyboard controller. When the key is released, its break code is sent (the break code for a key is its make code preceded by hex

PO).

All keys are typematic. When a key is pressed and held down, the keyboard continues to send the make code for that key until the key is released. The rate at which the make code is sent is known as the typematic rate (The typematic rate is described under "Set

Typematic Rate/Delay"). When two or more keys are held down, only the last key pressed repeats at the typematic rate.

Typematic operation stops when the last key pressed is released, even if other keys are still held down. When a key is pressed and held down while the interface is inhibited, only the first make code is stored in the buffer. This prevents buffer overflow as a result of typematic action.

Power-On Routine

Power-On Reset

The keyboard logic generates a POR when power is applied to the keyboard. The POR lasts a minimum of 300 milliseconds and a maximum of 9 seconds.

Note: The keyboard may issue a false return during the first

200 milliseconds after the +5 Vdc is established at the 90% level. Therefore, the keyboard interface is disabled for this period. ~

4-4 Keyboard

Basic Assurance Test

Immediately following the POR, the keyboard executes a basic assurance test (BAT). This test consists of a checksum of all read-only memory (ROM), and a stuck-bit and addressing test of all random-access memory (RAM) in the keyboard's microprocessor. The mode indicators-three light emitting diodes

(LEDs) on the upper right-hand corner of the keyboard-are turned on then off, and must be observed to ensure they are operational.

Execution of the BAT will take from 600 to 900 milliseconds.

(This is in addition to the time required for the POR.)

The BAT can also be started by a Reset command.

After the BAT, and when the interface is enabled (

I clock

I and

I data

I lines are set high), the keyboard sends a completion code to the interface-either hex AA for satisfactory completion or hex FC (or any other code) for a failure. If the system issues a

Resend command, the keyboard sends the BAT completion code again. Otherwise, the keyboard sets the keys to typematic and

Commands from the System

The commands described below may be sent to the keyboard at any time. The keyboard will respond within 20 milliseconds.

Note: The following commands are those sent by the system. They have a different meaning when issued by the keyboard.

Reset (Hex FF)

The system issues a Reset command to start a program reset and a keyboard internal self-test. The keyboard acknowledges the command with an

I acknowledge

I signal (ACK) and ensures the

Keyboard 4-5

system accepts the ACK before executing the command. The system signals acceptance of the ACK by raising the clock and data for a minimum of 500 microseconds. The keyboard is disabled from the time it receives the Reset command until the

ACK is accepted or until another command overrides the previous one. Following acceptance of the ACK, the keyboard begins the reset operation, which is similar to a power-on reset. The keyboard clears the output buffer and sets up default values for typematic and delay rates.

Resend (Hex FE)

The system can send this command when it detects an error in any transmission from the keyboard. It can be sent only after a keyboard transmission and before the system enables the interface to allow the next keyboard output. Upon receipt of

Resend, the keyboard sends the previous output again unless the previous output was Resend. In this case, the keyboard will resend the last byte before the Resend command.

No-Operation (NOP) (Hex FD through F7)

These commands are reserved and are effectively no-operation or

NOP. The system does not use these codes. If sent, the keyboard will acknowledge the command and continue in its prior scanning state. No other operation will occur.

Set Default (Hex F6)

The Set Default command resets all conditions to the power-on default state. The keyboard responds with ACK, clears its output buffer, sets default conditions, and continues scanning (only if the keyboard was previously enabled).

Default Disable (Hex FS)

This command is similar to Set Default, except the keyboard stops scanning and awaits further instructions.

4-6 Keyboard

Enable (Hex F4)

Upon receipt of this command, the keyboard responds with ACK, clears its output buffer, and starts scanning.

Set Typematic Rate/Delay (Hex F3)

The system issues this command, followed by a parameter, to change the typematic rate and delay. The typematic rate and delay parameters are determined by the value of the byte following the command. Bits 6 and 5 serve as the delay parameter and bits 4,3,2, 1, and 0 (the least-significant bit) are the rate parameter. Bit 7, the most-significant bit, is always O.

The delay is equal to 1 plus the binary value of bits 6 and 5 multiplied by 250 milliseconds ±200/0. The period (interval from one typematic output to the next) is determined by the following equation:

Period = (8

+

A) X (2 B ) X 0.00417 seconds, where A = binary value of bits 2, 1, and 0 and B = binary value of bits 4 and 3.

The typematic rate (make code per second) is l/period. The period is determined by the first equation above. The following table results.

Bit 4 - 0

00000

00001

00010

00011

00100

00101

00110

00111

01000

01001

01010

01011

01100

01101

01110

01111

Typematic

Rate ± 20%

30.0

26.7

24.0

21.8

20.0

18.5

17.1

16.0

15.0

13.3

12.0

10.9

10.0

9.2

8.0

8.0

Bit 4 - 0

10000

10001

10010

10011

10100

10101

10110

10111

11000

11001

11010

11011

11100

11101

11110

11111

Typematic

Rate ± 20%

7.5

6.7

6.0

5.5

5.0

4.6

4.3

4.0

3.7

3.3

3.0

2.7

2.5

2.3

2.1

2.0

Keyboard 4-7

The keyboard responds to the Set Typematic Rate Delay command with an ACK, stops scanning, and waits for the rate parameter. The keyboard responds to the rate parameter with another ACK, sets the rate and delay, and continues scanning (if the keyboard was previously enabled). If a command is received instead of the rate parameter, the set-typematic-rate function ends with no change to the existing rate, and the new command is processed. However, the keyboard will not resume scanning unless instructed to do so by an Enable command.

The default rate for the system keyboard is as follows:

The typematic rate = 10 characters per second ±20% and the delay = 500 ms ±200/0.

No-Operation (NOP) (Hex F2 through EF)

These commands are reserved and are effectively no-operation

(NOP). The system does not use these codes. If sent, the keyboard acknowledges the command and continues in its prior scanning state. No other operation will occur.

Echo (Hex EE)

Echo is a diagnostic aide. When the keyboard receives this command, it issues a hex EE response and continues scanning if the keyboard was previously enabled.

Set/Reset Mode Indicators (Hex ED)

Three mode indicators on the keyboard are accessible to the system. The keyboard activates or deactivates these indicators when it receives a valid command from the system. They can be activated or deactivated in any combination.

The system remembers the previous state of an indicator so that ~ its setting does not change when a command sequence is issued to change the state of another indicator.

4-8 Keyboard

A Set/Reset Mode Indicators command consists of two bytes.

The first is the command byte and has the following bit setup:

11101101 - hex ED

The second byte is an option byte. It has a list of the indicators to be acted upon. The bit assignments for this option byte are as follows:

Bit

0

1

2

3-7

Indicator

Scro 11 Lock Indicator

Num Lock Indicator

Caps Lock Indicator

Reserved (must be O's)

Note: Bit 7 is the most-significant bit; bit 0 is the least-significant.

The keyboard will respond to the Set/Reset Mode Indicators command with an ACK, discontinue scanning, and wait for the option byte. The keyboard will respond to the option byte with an ACK, set the indicators, and continue scanning if the keyboard was previously enabled. If another command is received in place of the option byte, execution of the function of the Set/Reset

Mode Indicators command is stopped with no change to the indicator states, and the new command is processed. Then scanning is resumed.

Commands to the

System

The commands described here are those sent by the keyboard.

They have a different meaning when issued by the system.

Resend (Hex FE)

The keyboard issues a Resend command following receipt of an invalid input, or any input with incorrect parity. If the system sends nothing to the keyboard, no response is required.

Keyboard 4-9

ACK(HexFA)

The keyboard issues an ACK response to any valid input other than an Echo or Resend command. If the keyboard is interrupted while sending ACK, it will discard ACK and accept and respond to the new command. ,.,-.....,.

Overrun (Hex 00)

An overrun character is placed in position 17 of the keyboard buffer, overlaying the last code if the buffer becomes full. The code is sent to the system as an overrun when it reaches the top of the buffer.

Diagnostic Failure (Hex FD)

The keyboard periodically tests the sense amplifier and sends a diagnostic failure code if it detects any problems. If a failure occurs during BAT, the keyboard stops scanning and waits for a system command or power-down to restart. If a failure is reported after scanning is enabled, scanning continues.

Break Code Prefix (Hex FO)

This code is sent as the first byte of a 2-byte sequence to indicate the release of a key.

BAT Completion Code (Hex AA)

Following satisfactory completion of the BAT, the keyboard sends hex AA. Hex FC (or any other code) means the keyboard microprocessor check failed.

ECHO Response (Hex EE)

This is sent in response to an Echo command from the system.

4-10 Keyboard

Keyboard Scan-Code Outputs

Each key is assigned a unique 8-bit, make scan code, which is sent when the key is pressed. Each key also sends a break code when first of which is the break code prefix, hex FO; the second byte is the same as the make scan code for that key.

The typematic scan code for a key is the same as the key's make code. Refer to "Keyboard Layouts" beginning on page 4-15 to determine the character associated with each key number.

The following figure lists the positions of the keys and their make scan codes.

Key

Number

5

6

7

8

1

2

3

4

21

22

23

24

17

18

19

20

25

26

27

28

30

13

14

15

16

9

10

11

12

Make Code

44

40

54

5B

14

15

1 D

24

2D

2C

35

3C

43

3E

46

45

4E

55

50

66

OD

OE

16

1 E

26

25

2E

36

30

Key

Number

49

50

51

52

53

54

55

57

58

61

64

65

66

39

40

41

43

44

46

47

48

31

32

33

34

35

36

37

38

Make Code

2A

32

31

3A

3C

49

4A

59

11

29

58

06

OC

4B

4c

52

5A

12 lA

22

21

1 C lB

23

2B

34

33

3B

42

Key

Number

90

91

92

93

95

96

97

98

71

72

73

74

67

68

69

70

99

100

101

102

103

104

105

106

107

108

Make Code

76

6C

6B

69

77

75

73

72

OB

OA

09

05

04

03

83

01

7A

71

84

7C

70

7E

7D

74

7B

79

Note: Break codes consists of two bytes; the first is hex FO, the second is the make scan code for that key.

Keyboard 4-11

Clock and Data Signals

The keyboard and system communicate over the

I clock

I and

I data

I lines. The source of each of these lines is an open-collector device on the keyboard that allows either the keyboard or the system to force a line to a negative level. When no communication is occurring, both the

I clock

I and

I data

I lines are at a positive level.

Data transmissions to and from the keyboard consist of 11-bit data streams that are sent serially over the

I data

I line. The following figure shows the structure of the data stream. r--....

Bit

1

2

7

8

9

10

11

3

4

5

6

Function

Start bit (always 1)

Data b t 0 (least-significant)

Data b t 1

Data b t 2

Data b t 3

Data b t 4

Data b t 5

Data b t 6

Data b t 7 (most-significant)

Parity bit (always odd)

Stop bit (always 1)

The parity bit is either 1 or 0, and the eight data bits plus the parity bit always equals an odd number.

When the system sends data to the keyboard, it forces the

I data

I line to a negative level and allows the

I clock

I line to go to a positive level.

When the keyboard sends data to, or receives data from the system, it generates the

I clock

I signal to time the data. The system can prevent the keyboard from sending data by forcing the

I clock

I line to a negative level; the

I data

I line may go high or low during this time.

During the BAT, the keyboard allows the

I clock

I and

I data

I lines to go to a positive level.

~

4-12 Keyboard

Keyboard Data Output

When the keyboard is ready to send data, it first checks for a keyboard-inhibit or system request-to-send status on the

I clock

I and

I data

I lines. If the

I clock

I line is low (inhibit status), data is stored in the keyboard buffer. If the

I clock

I line is high and

I data

I is low (request-to-send), data is stored in the keyboard buffer, and the keyboard receives system data.

If

I clock

I and

I data

I are both high, the keyboard sends the 0 start bit, 8 data bits, the parity bit and the stop bit. Data will be valid after the rising edge and before the falling edge of the

I clock

I line. During transmission, the keyboard checks the

I clock

I line for a positive level at least every 60 milliseconds. If the system lowers the

I clock

I line from a positive level after the keyboard starts sending data, a condition known as line contention occurs, and the keyboard stops sending data. If line contention occurs before the rising edge of the tenth clock (parity bit), the keyboard buffer returns the

I data

I and

I clock

I lines to a positive level. If contention does not occur by the tenth clock, the keyboard completes the transmission.

~. Following a transmission, the system can inhibit the keyboard until the system processes the input or until it requests that a response be sent.

Keyboard Data Input

When the system is ready to send data to the keyboard, it first checks if the keyboard is sending data. If the keyboard is sending but has not reached the tenth clock, the system can override the keyboard output by forcing the

I clock

I line to a negative level.

If the keyboard transmission is beyond the tenth clock, the system must receive the transmission.

If the keyboard is not sending, or if the system elects to override the keyboard's output, the system forces the

I clock

I line to a send. When the system is ready to send the start bit (

I data

I line will be low), it allows the

I clock

I line to go to a positive level.

Keyboard 4-13

The keyboard checks the state of the

I clock

I line at intervals of no less than 60 milliseconds. If a request-to-send is detected, the keyboard counts 11 bits. After the tenth bit, the keyboard forces the

I data

I line low and counts one more (the stop bit). This action signals the system that the keyboard has received its data.

Upon receipt of this signal, the system returns to a ready state, in ~ which it can accept'keyboard output, or goes to the inhibited state until it is ready.

Each system command or data transmission to the keyboard requires a response from the keyboard before the system can send its next output. The keyboard will respond within 20 milliseconds unless the system prevents keyboard output. If the keyboard response is invalid or has a parity error, the system sends the command or data again. A Resend command should not be sent in this case.

4-14 Keyboard

Keyboard Layouts

The keyboard has six different layouts:

•

French

• German

•

Italian

• Spanish

•

U.K. English

.,

U.S. English

The following pages show the six keyboard layouts.

Keyboard 4-15

Specifications

Size

• Length: 540 millimeters (21.6 inches)

• Depth: 100 millimeters (4 inches)

• Height: 225 millimeters (9 inches)

Weight

• 2.8 kilograms (6.2 pounds)

4-22 Keyboard

Notes:

4-24 Keyboard

SECTION 5. SYSTEM

BIOS

Contents

System BIOS Usage ...•..............••.•......... 5-3

Parameter Passing ........................... 5-4

Vectors with Special Meanings ................. 5-6

Other Read/Write Memory Usage .............. 5-8

BIOS Programming Hints .................... 5-10

Adapters with System-Accessible ROM Modules .. 5-12

Additional System Board ROM Modules ......... 5-13

Keyboard Encoding and Usage ••.........••........•. 5-13

Character Codes ........................... 5-14

Extended Functions ......................... 5-18

Shift States ................................ 5-19

Special Handling ........................... 5-21

Quick Reference ......••................•........ 5-24

System BIOS 5-1

Notes:

5-2 System BIOS

The basic input/output system (BIOS) resides in ROM on the system board and provides level control for the major

II

0 devices in the system and provides system services, such as time-of -day and memory size determination. Additional ROM modules may be placed on option adapters to provide device-level control for that option adapter. BIOS routines enable the assembly language programmer to perform block (disk or diskette) or character-level

I/O operations without concern for device address and characteristics.

If the sockets labeled VI7 and V37 on the system board are empty, additional ROM modules may be installed in these sockets. During POST, a test is made for valid code at this location, starting at address hex EOOOO and ending at hex EFFFF.

More information about these sockets may be found under

"Additional System Board ROM Modules" on page 5-13 .

The goal of the BIOS is to provide an operational interface to the system and relieve the programmer of concern about the characteristics of hardware devices. The BIOS interface isolates the user from the hardware, allowing new devices to be added to the system, yet retaining the BIOS level interface to the device.

~ In this manner, hardware modifications and enhancements are not apparent to user programs.

The IBM Personal Computer MACRO Assembler manual and the

IBM Personal Computer Disk Operating System (DOS) manual provide useful programming information related to this section.

A complete listing of the BIOS is given later in this section.

System BIOS Usage

Access to the BIOS is through program interrupts of the microprocessor in the real mode. Each BIOS entry point is available through its own interrupt. For example, to determine microprocessor in the real mode, INT I2H invokes the BIOS routine for determining the memory size and returns the value to the caller.

System BIOS 5-3

Parameter Passing

All parameters passed to and from the BIOS routines go through the 80286 registers. The prolog of each BIOS function indicates the registers used on the call and return. For the memory size example, no parameters are passed. The memory size, in lK increments, is returned in the AX register.

If a BIOS function has several possible operations, the AH register is used at input to indicate the desired operation. For example, to set the time of day, the following code is required: r"...

MOV AH.1

MOV CX,HIGH_COUNT

MOV OX,LOW_COUNT

INT 1AH

; function is to set time-of-day

; establish the current time

; set the time

To read the time of day:

MOV AH,O

INT 1AH

; function is to read time-of-day

; read the timer

The BIOS routines save all registers except for AX and the flags.

Other registers are modified on return only if they are returning a value to the caller. The exact register usage can be seen in the prolog of each BIOS function.

5-4 System BIOS

The following figure shows the interrupts with their addresses and functions.

16

17

18

19 lA lB lC

1 D

1 E

1 F

Int Address

3

4

5

6

o

1

2

7

8

F

10

11

12

9

A

B

C

D

E

13

14

15

0-3

4-7

8-B

C-F

10-13

14-17

18-1B lC-1F

20-23

24-27

28-2B

2C-2F

30-33

34-37

38-3B

3C-3F

40-43

44-47

48-4B

4c-4F

50-53

54-57

58-5B

5C-5F

60-63

64-67

68-6B

6C-6F

70-73

74-77

78-7B

7C-7F

Name

Divide by Zero

Single Step

Nonmaskable

Breakpoint

Overflow

Print Screen

Reserved

Reserved

Time of Day

Keyboard

Reserved

Communications

Communications

Alternate Printer

Diskette

Printer

Video

Equipment Check

Memory

Diskette/Disk

Communications

Cassette

Keyboard

Printer

Resident Basic

Bootstrap

Time of Day

Keyboard Break

Timer Tick

Video Initialization

Diskette Parameters

Video Graphics Chars

BIOS Entry

D11

D11

NM I INT

D 11

D11

PRINT SCREEN

D 11

D 11

TIMER INT

KB INT

DlT

D 11

D 11

D 11

DISK INT

Dll ­

VIDEO 10

EQUIPMENT

MEMORY SIZE

DETERMINE­

DISKETTE 10

RS232 10­

CASSETTE

10/System

Extensions

KEYBOARD 10

PR INTER TO

F600:0000

BOOTSTRAP

TIME OF DAY

DUMMY RETURN

DUMMY-RETURN

VIDEO-PARMS

DISK BASE

o

80286-2 Program Interrupt Listing (Real Mode Only)

Note: For BIOS index, see the BIOS Quick Reference on page 5-24 .

System BIOS 5-5

The following figure shows hardware, BASIC, and DOS reserved interrupts.

Interrupt Address

20

21

22

23

24

25

26

27

28-3F

40-5F

60-67

68-6F

70

71

72

73

74

75

76

77

78-7F

80-85

86-FO

F1-FF

80-83

84-87

88-8B

8c-8F

90-93

94-97

98-9B

9C-9F

AO-FF

100-17F

180-19F

1AO-1BF

1CO-1C3

1C4-1C7

1c8-1CB

1CC-1CF

100-103

104-107

108-10B

10C-10F lEO-IFF

200-217

218-3C3

3C4-3FF

Function

DOS program terminate

DOS function call

DOS terminate address

DOS Ctrl Break exit address

DOS fatal error vector

DOS absolute disk read

DOS absolute disk write

DOS terminate, fix in storage

Reserved for DOS

Reserved for BIOS

Reserved for user program interrupts

Not used

IRQ 8 Realtime clock INT (BIOS entry

RTC INT)

IRQ 9 TBIOS entry RE DIRECT)

IRQ 10 (BIOS entry 011)

IRQ 11 (BIOS entry 011)

IRQ 12 (BIOS entry 011)

IRQ 13 BIOS Redirect to NMI interrupt

(BIOS entry INT 287)

IRQ 14 (BIOS entry-OIl)

IRQ 15 (BIOS entry 011)

Not used

Reserved for BASIC

Used by BASIC interpreter whi Ie

BASIC is running

Not used

Hardware, Basic, and DOS Interrupts

Vectors with Special Meanings

Interrupt 15-Cassette I/O: This vector points to the following functions:

•

Device open

• Device closed

• Program termination

• Event wait

•

Joystick support

5-6 System BIOS

•

System Request key pressed

• Wait

• Move block

~

• Extended memory size determination

• Processor to protected mode

Additional information about these functions may be found in the

BIOS listing.

Interrupt IB-Keyboard Break Address:

This vector points to the code that is executed when the Ctrl and Break keys are pressed. The vector is invoked while responding to a keyboard interrupt, and control should be returned through an IRET instruction. The power-on routines initialize this vector to point to an IRET instruction so that nothing will occur when the Ctrl and Break keys are pressed unless the application program sets a different value.

,-...., This routine may retain control with the following considerations:

• The Break may have occurred during interrupt processing, so that one or more End of Interrupt commands must be sent to the 8259 controller.

• All

II

0 devices should be reset in case an operation was underway at the same time.

Interrupt I C-Timer Tick:

This vector points to the code that will be executed at every system-clock tick. This vector is invoked while responding to the timer interrupt, and control should be returned through an IRET instruction. The power-on routines initialize this vector to point to an IRET instruction, so that nothing will occur unless the application modifies the pointer.

The application must save and restore all registers that will be modified.

Interrupt ID-Video Parameters:

This vector points to a data region containing the parameters required for the initialization of the 6845 on the video adapter. Notice that there are four

System BIOS 5-7

separate tables, and all four must be reproduced if all modes of operation are to be supported. The power-on routines initialize this vector to point to the parameters contained in the ROM video routines.

Interrupt IE-Diskette Parameters:

This vector points to a data region containing the parameters required for the diskette drive. The power-on routines initialize this vector to point to the parameters contained in the ROM diskette routine. These default parameters represent the specified values for any IBM drives attached to the system. Changing this parameter block may be necessary to reflect the specifications of other drives attached.

~

Interrupt IF-Graphics Character Extensions:

When operating in graphics modes 320 x 200 or 640 x 200, the read/write character interface will form a character from the

ASCII code point, using a set of dot patterns. ROM contains the dot patterns for the first 128 code points. For access to the second 128 code points, this vector must be established to point at a table of up to lK, where each code point is represented by 8 bytes of graphic information. At power-on time, this vector is initialized to 000:0, and the user must change this vector if the additional code points are required.

Interrupt 40-Reserved:

When a Fixed Disk and Diskette Drive

Adapter is installed, the BIOS routines use interrupt 40 to revector the diskette pointer.

~

Interrupt 41 and 46-Fixed Disk Parameters:

These vectors point to the parameters for the fixed disk drives, 41 for the first drive and 46 for the second. The power-on routines initialize the vectors to point to the appropriate parameters in the ROM disk routine if CMOS is valid. The drive type codes in CMOS are used to select which parameter set the vector points to. Changing this parameter hook may be necessary to reflect the specifications of other fixed drives attached.

Other Read/Write Memory Usage

The IBM BIOS routines use 256 bytes of memory from absolute hex 400 to hex 4 FF. Locations hex 400 to 407 contain the base

5-8 System BIOS

addresses of any RS-232C adapters installed in the system.

Locations hex 408 to 40F contain the base addresses of any printer adapters.

Memory locations hex 300 to hex 3FF are used as a stack area during the power-on initialization and bootstrap, when control is passed to it from power-on. If the user desires the stack to be in a different area, that area must be set by the application.

The following figure shows the reserved memory locations.

Address Mode Function

400-4Al ROM BIOS See BIOS list i ng

4A2-4EF Reserved

4FO-4FF Reserved as intra-application communication area for any appl icat ion

500-5FF

500 DOS

Reserved for DOS and BASIC

Print screen status flag store

O=Print screen not active or successful print screen operation

I=Print screen in progress

504

510-511

512-515

516-519

51A-51D

DOS

BASIC

BASIC

BASIC

BASIC

255=Error encountered during print screen operation

Single drive mode status byte

BASIC's segment address store

Clock interrupt vector segment:offset store

Break key interrupt vector segment :offset store

Disk error interrupt vector segment :offset store

Reserved Memory Locations

The following is the BASIC workspace for DEF SEG (default workspace) .

Offset Length

2E

347

30

358

2

2

2

2

6A 1

4E 1

Line number of current line being executed

Li ne number of last error

Offset into segment of start of program text

Offset into segment of start of variables

(end of program text 1-1)

Keyboard buffer contents

O=No characters in buffer

I=Characters in buffer

Character color in graphics mode*

Basic Workspace Variables

*Set to 1, 2, or 3 to get text in colors 1-3. Do not set to O. The default is 3.

System BIOS 5-9

Example

100 PRINT PEEK (&H2E)

+

256

x

PEEK (&H2F)

L

Hex 64

H

Hex 00

The following is a BIOS memory map.

Starting Address

00000

DOlED

00400

00500

EOOOO

FOOOO

BIOS Memory Map

BIOS interrupt vectors

Ava i lab le interrupt vectors

BIOS data area

User read/write memory

Read only memory

BIOS program area

BIOS Programming Hints

The BIOS code is invoked through program interrupts. The programmer should not "hard code" BIOS addresses into applications. The internal workings and absolute addresses within

BIOS are subject to change without notice.

/""""..

If an error is reported by the disk or diskette code, reset the drive adapter and retry the operation. A specified number of retries should be required for diskette reads to ensure the problem is not due to motor startup.

When altering I/O-port bit values, the programmer should change only those bits necessary to the current task. Upon completion, the original environment should be restored. Failure to adhere to this practice may cause incompatibility with present and future applications.

Additional information for BIOS programming can be found in

Section 9 of this manual.

5-10 System BIOS

Move Block BIOS

The Move Block BIOS was designed to make use of the memory above the 1M address boundary while operating with IBM DOS.

The Block Move is done with the Intel 80286 Microprocessor

~ operating in the protected mode.

Because the interrupts are disabled in the protected mode, Move

Block BIOS may demonstrate a data overrun or lost interrupt situation in certain environments.

Communication devices, while receiving data, are sensitive to these interrupt routines; therefore, the timing of communication and the Block Move should be considered. The following table shows the interrupt servicing requirements for communication devices.

Baud Rate 11 Bit (ms)

300

1200

2400

4800

9600

33.33

8.33

4.16

2.08

1. 04

Times are approximate

9 bit (ms)

30.00

7.50

7.50

1. 87

0.93

Communication Interrupt Intervals

The following table shows the time required to complete a Block

Move.

Block Size

Buffer

Addresses

Normal

512 Byte Both even

Even and odd

Both odd

Maximum

64K Both Even

Even and odd

Both odd

Time is approximate

Move Block BIOS Timing

Time in ms

0.98

1. 04

1. 13

37.0

55.0

72.0

System BIOS 5-11

Following are some ways to avoid data overrun errors and loss of interrupts:

• Do not use the Block Move while communicating, or

• Restrict the block size to 512 bytes or less while communicating, or

• Use even address buffers for both the source and the destination to keep the time for a Block Move to a minumum.

Adapters with System-Accessible ROM Modules

The ROM BIOS provides a way to integrate adapters with on-board ROM code into the system. During POST, interrupt vectors are established for the BIOS calls. After the default vectors are in place, a scan for additional ROM modules occurs.

At this point, a ROM routine on an adapter may gain control and establish or intercept interrupt vectors to hook themselves into the system.

The absolute addresses hex C8000 through EOOOO are scanned in

2K blocks in search of a valid adapter ROM. A valid ROM is defined as follows:

Byte 0 Hex 55

Bytel HexAA

Byte 2 A length indicator representing the number of 512-byte blocks in the ROM

Byte 3 Entry by a CALL FAR

A checksum is also done to test the integrity of the ROM module.

Each byte in the defined ROM module is summed modulo hex

100. This sum must be 0 for the module to be valid.

When the POST identifies a valid ROM, it does a CALL FAR to byte 3 of the ROM, which should be executable code. The adapter can now perform its power-on initialization tasks. The

5-12 System BIOS

adapter's ROM should then return control to the BIOS routines by executing a RETURN FAR.

Additional System Board ROM Modules

The POST provides a way to integrate the code for additional

ROM modules into the system. These modules are placed in the sockets marked U17 and U37. A test for additional ROM modules on the system board occurs. At this point, the additional

ROM, if valid, will gain control.

The absolute addresses, EOOOO through EFFFF, are scanned in

64K blocks for a valid checksum. Valid ROM is defined as follows:

Byte 0 Hex 55

Byte 1 HexAA

Byte 2 Not used

.~ Byte 3 Entry by a CALL FAR

A checksum is done to test the integrity of the ROM modules.

Each byte in the ROM modules is summed modulo hex 100. This sum must be 0 for the modules to be valid. This checksum is located at address EFFFF.

When the POST identifies a valid ROM at this segment, it does a

CALL FAR to byte 3 of the ROM, which should be executable code.

Keyboard Encoding and Usage

,.-......, The keyboard routine, provided by IBM in the ROM BIOS, is responsible for converting the keyboard scan codes into what will be termed Extended ASCII. The extended ASCII codes returned by the ROM routine are mapped to the U.S. English keyboard

System BIOS 5-13

layout. Some operating systems may make provisions for alternate keyboard layouts by providing an interrupt replacer, which resides in the read/write memory. This section discusses only the ROM routine.

Extended ASCII encompasses I-byte character codes, with possible values of 0 to 255, an extended code for certain extended keyboard functions, and functions handled within the keyboard routine or through interrupts.

Character Codes

The character codes described later are passed through the BIOS keyboard routine to the system or application program. A "-1" means the combination is suppressed in the keyboard routine.

The codes are returned in the AL register. See "Characters,

Keystrokes, and Color" later in this manual for the exact codes.

5-14 System BIOS

The following figure shows the keyboard layout and key positions.

System BIOS 5-15

9

10

11

12

13

14

15

5

6

7

8

1

2

3

4

Key Base Case

I

1

2

3

4

5

6

7

8

9

0

Uppercase

A

~

(

)

!

@

-

#

$

%

+

}

-1

A

S

D

F

G

H

J

K

L

1

Backs)ace

(008

I+-

(*)

Y

U

I

0 p

Q w

E

R

T

{

:

"

CR

-1

Ctrl Alt

-1

-1

.-1

-1

-1

(* )

Nul(OOO) (*) (* )

-1 (*)

(*)

(*)

RS(030)

-1

-1

-1

-1

US(03l)

-1

FS(028)

Del(12])

(*)

(*)

(*)

(* )

(* )

(* )

(* )

-1

-1

16

17

18

19

20

21

22

23

24

25

26

27

28

30 Ctrl

31

32

33

34

35

36

37

38

39

40

41

43

44 Shift

(Left)

46

47

48

Y u i

0 p

[

1

-1 a s d f g h j k

;

I

I

=

\

Backs)ace

(008

--+1 (009) q w e r t

CR

-1 z x c

Z

X

C

-1

DC1(OI])

ETB(023)

ENQ(005)

DC2(018)

DC4(020)

EM(025)

NAK(021)

HT(009)

S 1(015)

DLE(016)

Esc(02])

GS(029)

-1

SOH(OOl)

DC3(019)

EOT(004)

ACK(006)

BEL(OO])

BS(008)

LF(010)

VT(OIl)

FF(012)

-1

-1

LF(010)

-1

SUB(026)

CAN(024)

ETX{OO3)

Notes:

.(.*) Refer to "Extended

("*) Refer to "Special

Functions"

Handling" in in this section. this section.

-1

(*)

(* )

(* )

(* )

(* )

(*)

(*)

(*)

(*)

(*)

(* )

-1

-1

(* )

(*)

(*)

(*)

(*)

(*)

(*)

(* )

(* )

-1

-1

-1

-1

(*)

(*)

(*)

Character Codes (Part 1 of 2)

5-16 System BIOS

Key Base Case Uppercase Ctrl

49

50

51

52

53

54

55

57 Sh i ft

(Right)

58 Alt

61

64 Caps

Lock

107

108

112

113

114

115

116

117

118 v b n m

-1

-1

-1

,

/

Space

90

95 Num

Lock

100 Scroll -1

Lock

Esc

-1

-

Enter

Null (*)

Null (*)

Null (*)

Null (*)

Null (*)

Null (*)

Null (*)

V

B

N

M

<

>

?

-1

-1

Space

-1

Esc

-1 (*)

-1

-

Enter

Nu 11 (*)

Null (*)

Null (*)

Null (*)

Null (* )

Null (*)

Null (*)

-1

-1

-1

-1

SYN(022)

STX(002)

SO(014)

CR(013)

-1

Space

-1

Esc

Pause (**)

Break (**)

(*)

-1

Null

Null

(*)

Null (*)

Null (*)

Null (*)

Null (*)

(*)

Nu 11 (*)

Notes: i*)

Refer to "Extended Functions" in this section.

( *) Refer to "Special Handling" in this section.

Character Codes (Part 2 of 2)

-1

-1

-1

(*)

-1

Null (*)

Null (*)

Null(*)

Null (*)

NulJ(*)

NulJ(*)

Null(*)

Alt

(*)

(*)

(*)

(*)

-1

-1

-1

-1

-1

Space

-1

System BIOS 5-17

The following figure lists keys that have meaning only in Num

Lock, Shift, or Ctrl states. The Shift key temporarily reverses the current Num Lock state.

Num

Key Lock

91

92

93

96

97

98

99

101

102

103

104

105

106

Base Case AIt Ctrl

7

4

Home

+-

(*)

(*)

....

(* )

-1

-1

Clear Screen

Reverse Word

(*)

1 End (* ) -1 Erase to EOL

(*)

8

5

2

0

6 t (*)

-1

+

(*)

Ins

-1

-1

-1

-1

-1

-1

-1

-1

-1

-1

9 Page Up (*) Top of Text and Home

Advance Word

(*)

3 Pa5!e Down

( " )

Delete

-1 Erase to EOS

(*)

(*,**) (** ) (**)

-

Sys Request -1 -1

+ + (*) -1 -1

Notes:

(*) Refer to "Extended Functions" in this section.

(**) Refer to "Special Hand ling" in this section.

Special Character Codes

Extended Functions

For certain functions that cannot be represented by a standard

ASCII code, an extended code is used. A character code of 000

(null) is returned in AL. This indicates that the system or application program should examine a second code, which will indicate the actual function. Usually, but not always, this second code is the scan code of the primary key that was pressed. This code is returned in AB.

5-18 System BIOS

The following is a list of the extended codes and their functions.

Second

Code Function

3

15

16-25

30-38

44-50

59-68

71

Nul Character

I+-

(Back-tab)

Alt Q, W, E, R, T, Y, U, I, 0, P

Alt A, S, D, F, G, H, J, K, l

Alt Z, X, C, V, B, N, M

Fl to FlO Function Keys (Base Case)

Home

72

73

75

77

79

80

81

82

83

84-93

104-113 F31 to F40 (Alt-Fl through Alt-Fl0)

114

115

116

117

118

132 t

+-

~

End

(Cursor Right)

~

(Cursor Up)

Page Up and Home Cursor

(Cursor left)

(Cursor Down)

Page Down and Home Cursor

Ins (Insert)

Del (Delete)

Fll to F20 (Shift-Fl through Shift-FlO)

94-103 F21 to F30 (Ctrl-Fl through Ctrl-Fl0)

Ctrl PrtSc (Start/Stop Echo to Printer)

Ctrl +(Reverse Word)

Ctrl ~

Ctrl End (Erase to End of line-EOl)

Ctrl PgDn (Erase to End of Screen-EOS)

119 Ctrl Home (Clear Screen and Home)

120-131 Alt 1,2,3,4,5,6,7,8,9,0, -,

=

keys 2-13

Ctrl PgUp (Top 25 lines of Text and Cursor Home)

Keyboard Extended Functions

Shift States

Most shift states are handled within the keyboard routine, and are not apparent to the system or application program. In any case, the current status of active shift states is available by calling an entry point in the BIOS keyboard routine. The following keys result in altered shift states:

Shift: This key temporarily shifts keys 1 through 13, 15 through

29, 31 through 41, and 46 through 55, to uppercase (base case if in Caps Lock state). Also, the Shift temporarily reverses the

~ Num Lock or non-Num Lock state of keys 91 through 93, 96, 98,

99, and 10 1 through 104.

System BIOS 5-19

Ctrl: This key temporarily shifts keys 3, 7, 12, 15, 17 through 29,

31 through 39, 43, 46 through 52, 91 through 93, and 101 through 103 to the Ctrl state. The Ctrl key is also used with the

Alt and Del keys to cause the system-reset function; with the

Scroll Lock key to cause the break function; and with the Num

Lock key to cause the pause function. The system-reset, break, and pause functions are described under "Special Handling" later in this section.

AIt: This key temporarily shifts keys 1 through 13, 17 through

26,31 through 39, and 46 through 52 to the Alt state. The Alt key is also used with the Ctrl and Del keys to cause a system reset.

The Alt key also allows the user to enter any character code from

1 to 255.

Note: Character codes 97-122 will display uppercase with Caps Lock activated.

The user holds down the Alt key and types the decimal value of the characters desired on the numeric keypad (keys 91 through

93,96 through 99, and 101 through 103). The Alt key is then released. If the number is greater than 255, a modulo-256 value is used. This value is interpreted as a character code and is sent through the keyboard routine to the system or application program. Alt is handled internal to the keyboard routine.

~

Caps

Lock:

This key shifts keys 17 through 26, 31 through 39, and 46 through 52 to uppercase. When Caps Lock is pressed again, it reverses the action. Caps Lock is handled internal to the keyboard routine. When Caps Lock is pressed, it changes the

Caps Lock Mode indicator. If the indicator was on, it will go off; and if it was off, it will go on.

Scroll Lock:

When interpreted by appropriate application programs, this key indicates that the cursor-control keys will cause windowing over the text rather than moving the cursor.

When the Scroll Lock key is pressed again, it reverses the action. ~

The keyboard routine simply records the current shift state of the

Scroll Lock key. It is the responsibility of the application program to perform the function. When Scroll Lock is pressed, it

5-20 System BIOS

changes the Scroll Lock Mode indicator. If the indicator was on, it will go off; and if it was off, it will go on.

Num Lock: This key shifts keys 91 through 93, 96 through 99, and 101 through 104 to uppercase. When Num Lock is pressed again, it reverses the action. Num Lock is handled internal to the keyboard routine. When Num Lock is pressed, it changes the

Num Lock Mode indicator. If the indicator was on, it will go off; if it was off, it will go on.

If the keyboard Num Lock Mode indicator and the system get out of synchronization, pressing the.key combination of Shift and

Num Lock will synchronize them. This key combination changes the Num Lock bit in the keyboard memory, but sends only the scan code for the Shift key to the system.

Shift Key Priorities and Combinations: If combinations of the

Alt, Ctrl, and Shift keys are pressed and only one is valid, the priority is as follows: the Alt key is first, the Ctrl key is second, and the Shift key is third. The only valid combination is Alt and

Ctrl, which is used in the system-reset function.

Special Handling

System Reset

The combination of the Alt, Ctrl, and Del keys results in the keyboard routine that starts a system reset or restart. System reset is handled by BIOS.

Break

The combination of the Ctrl and Break keys results in the keyboard routine signaling interrupt hex lB. The extended characters AL=hex 00, and AH=hex 00 are also returned.

System BIOS 5-21

Pause

The Pause key (Ctrl and Num Lock) causes the keyboard interrupt routine to loop, waiting for any key except Num Lock to be pressed. This provides a method of temporarily suspending an operation, such as listing or printing, and then resuming the operation. The method is not apparent to either the system or the application program. The key stroke used to resume operation is discarded. Pause is handled internal to the keyboard routine.

~

Print

Screen

The PrtSc key results in an interrupt invoking the print-screen routine. This routine works in the alphanumeric or graphics mode, with unrecognizable characters printing as blanks.

System Request

When the System Request (Sys) key is pressed, a hex 8500 is placed in AX, and an interrupt hex 15 is executed. When the Sys 1"'"""'-\ key is released, a hex 8501 is placed in AX, and another interrupt hex 15 is executed. If an application is to use System Request, the following rules must be observed:

Save the previous address.

Overlay interrupt vector hex 15.

Check AH for a value of hex 85:

If yes, process may begin.

If no, go to previous address.

The application program must preserve the value in all registers, except AX, upon return. System Request is handled internal to the keyboard routine.

5-22 System BIOS

Other Characteristics

The keyboard routine does its own buffering, and the keyboard buffer is large enough to support entries by a fast typist.

However, if a key is pressed when the buffer is full, the key will be ignored and the "alarm" will sound.

The keyboard routine also suppresses the typematic action of the following keys: Ctrl, Shift, Alt, Num Lock, Scroll Lock, Caps

Lock, and Ins.

During each interrupt 09H from the keyboard, an interrupt 15H, function (AH)=4FH is generated by the BIOS after the scan code is read from the keyboard adapter. The scan code is passed in the (AL) register with the carry flag set. This is to allow an operating system to intercept each scan code prior to its being handled by the interrupt 09H routine, and have a chance to change or act on the scan code. If the carry flag is changed to 0 on return from interrupt 15H, the scan code will be ignored by the interrupt handler.

System BIOS 5-23

Quick Reference

Test 1 ......................................... . 5-28

Data Area Description ......................... . 5-30

Common POST and BIOS Equates ............... . 5-32 ~

Test .01 Through Test .16 ...................... . 5-36

POST and Manufacturing Test Routines ........... . 5-57

Test2 ......................................... . 5-58

Test .17 Through Test .23 ...................... . 5-58

Test3. POST Exception Interrupt Tests .........•.••••. 5-75

Test4. POST and BIOS Utility Routines .............•• 5-81

CMOS READ ............................. . 5-81

CMOS-WRITE ............................ . 5-81

E MSG P MSG .......................... . 5-82

ERR BEEP­ ............................... . 5-82

BEEP ..................................... . 5-83

WAITF .................................... . 5-83

CONFIG BAD ............................. . 5-83

PRT SEG ................................. . 5-84

KBD-RESET .............................. . 5-85

D 11 - Dummy Interrupt Handler ................ . 5-87

Hardware Interrupt 9 Handler (Type 71) .......... . 5-87 r""\

Test5. Exception Interrupt Tests ..............••••••• 5-88

SYSINITI - Build Protected Mode Descriptors ...... . 5-89

GDT BLD - Build the GDT for POST ........... . 5-89

SIDT-BLD - Build the IDT for POST ........... . 5-91

Test6 ..................................••..•... 5-93

STGTST CNT .............................. 5-93

ROM ERR ................................. 5-95

XMIT8042 ................................ 5-95

BOOT- STRAP .............................. 5-95

Diskette BIOS ........••........................ 5-97

Fixed Disk (Hard File) BIOS ....................... 5-116

5-24 System BIOS

Keyboard BIOS ..•.•.••.......••••.••.••...•..•• 5-129

Printer BIOS ............••..•..........•••..... 5-138

RS232 BIOS ................................... 5-140

~,

Video BIOS .................................... 5-143

BIOS ...••....•.......••..•.................. 5-161

Memory Size Determine ....................... 5-161

Equipment Determine ......................... 5-161

NMI ...................................... 5-162

BIOSI. . ...................................... 5-163

Event Wait ................................. 5-164

Joystick Support ............................. 5-165

Wait ...................................... 5-166

Block Move ................................ 5-167

Extended Memory Size Determine ............... 5-172

Processor to Virtual Mode ..................... 5-174

BIOS2 ....................................... 5-176

~ Time of Day ................................ 5-176

Alarm Intermpt Handler ....................... 5-179

Print Screen ................................. 5-180

Timer 1 Interrupt Handler ...................... 5-181

ORGS - PC Compatibility and Tables •••.•.......•••• 5-182

POST Error Messages ......................... 5-182

System BIOS 5-25

Addre!!~ Pub Ii ca by Name

FOOO;E090

FOOO :EOA9

FOOO:EOC2

FOOO:EODB

FOOO:EOF4

FOOOIEIOD

FOOOIEI26

FOOOIEI3F

FOOOIEI68

FOOO:EI91

FOOO:EI87

FOOO:E1DB

FOOO;E1EE

FOOO:E209

FOOO:E224

FOOOrEZ39

FOOOIE2C6

FOOO:E2EA

FOOOIE30E

FOOOIE31E

FOOOIE32E

FOOOIE343

FOOOl40A8

FOOO: 1982

FOOD: 1970

FOOD :E364

FOOO:E379

FOOOIE38E

FOOO:E3AC

FOOO:E3BF

FOOO IE302

FOOO:E250

FOOO;E30F

FOOD: E40 I

FOOO:488e

FOOD :FF5E

FOOD: 450 1

FOOO:314F

FOOO:E729

FOOO: 3A23

FOOO: 6000

FOOO: 19FO

FOOO;IB1A

FOOO:2022

FOOO:OC96

FOOO:0396

FOOO :4135

FOOO: 1941

FOOOl195B

FOOOII A45

FOOD :E6F5

FOOO:FA6E

FOOO:E020

FOOO: lBCA

FOOO:E030

FOOO:E040

FOOO:1915

FOOO:20E3

FOOOIEFCl

FOOO:2All

FOOO:2C2B

FOOO: 2A82

FOOO:2A2E

FOOO IFF!53

FOOOIICl8

FOOD :E05E

FOOOIE077

AI

ACT OISP PAGE

BASTc -

BEEP

BLINK tNT

BOOT STRAP I

C21 -

C8042

CASSETTE 10 I

CMOS READ -

CMOS-WR r TE

CONFIG 8AD

CONF TeL

CRT CHAR GEN

01 -

011

02

02.

DDS

DISKETTE 10 1

Et 08

E I 09

E161

EI62

EI63

EI64

E201

E202

E203

E301

E302

E303

E304

DISK 8ASE -

DI SK-INT I

Ot SK-IO -

DISK-SETUP

OSKETTE SETUP

DUMMY RETURN

DUMMY-RETURN 1

El01 ­

EI02

EI03

EI04

Et05

EI06

EI07

E401

E501

E601

E602

EQUIPMENT 1

ERR BEEP

E MSG

FT780

FI781

FI782

F1790

FI791

F3'

F3D

F3DI

FD T8L

FILL

FLOPPY

GATE A20

HO IRT

FOOOIFF5A HRD

FOOOIICZ2

FOOO:EBEI

FOOO:E9IB

..

.,.

INT 287

KIO­

KII

K 12 FOOOIE955

FOOOIE95F

FOOO :E969

FOOOIE916

FOOO:3267

.,.

KI3

.,,

FOOO:E87E

FOOOI0008 Aba

.,

FOOD :E866

FOOO :E8eE

FOOOIE6C8

K8

K.

KBD RESET FOOO:1AEF

FOOO:31FE KB TNT I

FOOO:3112 KEYBOARD 10 1

FOOOIOOIO Aba M4 - -

FOOOIFOE4

.5

FOOOIFOEC

FOOOIFOF4

•• .,

MEMORY SIZE DET I FOOO :409E

NMI INT FOOOIE2C3

FOOO :4082

FOOO :03A2

FOOOIOOOO

NMJ-rNT I

QBF-42 -

POST1

FOOO rOC96

FOOD: 1671

FOOOl1941

FOOD: IC38

FOO~: IEB5

POST2

POST3

POST4

POSTS

POST6

Address PubliC!! by Value

FOOO 0000 POSTI

FOOO 0008 Aba K6L

FOOO 0010 Aba

••

FOOD 0050 START I

FOOO 0396 C8042­

FOOO 03A2

FOOD OC96

FOOO OC96

FOOO 1052

FOOD IOB6

FOOD 1089

FOOO lOOA

FOOD 1613

FOOO \ 671

FOOO 1941

FOOD 1941

FOOO 1958

FOOO 1915

FOOD 1970

FOO~ 19A4

FOOO 1982

FOOO 19FO

FOOD IA36

FOOO 1 A45

FOO~ IA59

FOOO IA69

FOO~ IA10

FOOO I A85

FOOD I A81

FOOO I ABO

FOOO I AEF

FOOO 181A

FOOO 1828

FOOO IBCA

FOOD lCI8

FOOD ICI9

FOOO 1C22

FOOO IC3t

FOOD I C38

FOOO 102A

FOOO I EB5

FOO~ IEB5

FOOO IFB5

FOOD IFEI

FOOO 2022

FOOD 20E3

FOOO 28C I

FOOO 2A t 7

FOOO 2A2E

FOOO 2A82

FOOO 2C2B

FOOO 314F

FOOO 3172

FOOD 31FE

FOOO 3267

FOOO 366C

FOOO 3716

FOOO 37AO

FOOO 38BO

FOOD 38EF

FOOD 398F

FOOO 39E4

FOOD 3AOC

FOOO 3A23

FOO~ 3A47

FOOO 3A60

FOOD 3A90

FOOD 3B2F

FOOD 3B81

FOOD 3808

FOOO 3COD

FOOO 3CBD

FOOO 3CCE

FOO~ 3F72

FOO~ 3FF9

FOO~ 409E

FOOO 40A8

FOOD 40B2

FOOO 4135

FOOD 43BF

FOOO 4501

FOOD 45BD

FOO~ 473F

FOOO 47A9

FOOO 4B3F

FOOO 4888

FOOO 6000

FOOO E020

FOOO E030

FOOO E040

FOOD E05E

FOOO E017

FOOD E090

FOOD EOA9

FOOD EOC2

FOOD EOOe

FOOO EOF4

FOOO EIOD

OBF 42

POST2

C21

SHUT3

SHUT2

SHUT7

SHUT6

SHUT4

POST3

CMOS READ

POST4

CMOS WR [TE

ODS ­

E MSG

P-MSG

ERR BEEP

BEEP

WAITF

CONFIG 8AD

XPC BYTE

PRT-HEX

PRT-SEG

PROT PRT HEX

ROM CHECKSUM

ROM-CHECK

KBD-RESET

BLINK INT

SET TOO

011­

DUMMY RETURN I

RE D[RECT ­

I NT 287

PRce SHUTDOWN

POST!"

SYSINITI

POST6

STGTST CNT

ROM ERR

XMIT 8042

BOOT-STRAP I

DISKETTE

SEEK

'0

- ­

I

DISK INT I

DSKETTE SETUP

DISK SETUP

DISK-tO

HD INT

KEYBOARD 10 I

KB INT 1­

KI6 ­

SNO DATA

PRINTER [0 1

RS232 [0 ,­

VIOED-'O-'

SET MODE­

SET-CT'rPE

SET-CPOS

READ CURSOR

ACT DISP PAGE

SET-COLOR

VIDEO STATE

SCROLL UP

SCROLL -DOWN

READ ....

C CURRENT

WR I TE Ai: CURRENT

WR I TE-C CURRENT

READ

Bof

WR I TE DOT

WR ITE-TTY

READ [PEN

MEMOih 5 I ZE DET I

EQUIPMENT , ­

NMJ INT 1­

CASSETTE 10 1

SHUT9 - ­

GATE A20

TIME-OF DAY I

RTC TNT­

PR INT SCREEN 1

TIMER-INT I ­

FILL ­

BASIC

01

02

02.

E 1 0 I

E102

E103

EI04

E 1 05

El06

EI07

EI08

5-26

MAP

FOOO 371&

FOOO FFS4

FOOO 47A9

FOOO lC31

FOOO 1A85

FOOO 1A69

FOOO 1 A70

FOOO 19A4

FOOO FFFO

FOOO 3881

FOOO 3AOC

FOOO 3C8D

FOOO 3FF9

FOOO 1 C 19

FOOO 1 A8D

FOOO lA81

FOOO 1F85

FOOO 37AO

FOOO 473F

FOOO 382F

FOOO 3A90

FOOD 28C 1

FOOO FF&2

FOOO 3A47

FOOO 39E4

FOOO 398F

FOOO 38EF

FOOO 1828

FOOO 1086

FOOO 1052

FOOO 1&13

FOOO 10DA

FOOO 1089

FOOO 438F

FOOO FF23

FOOO 366C

FOOO 0050

FOOO I E85

FOOO lD2A

FOOO 483F

FOOa 4580

FOOO FF66

FOOO FEF3

FOOO 3880

FOOO FOA4

FOOO 3A6D

FOOO IA36

FOOO 3808

FOOO 3COD

FOOO 3CCE

FOOO 3F72

FOOO IFEI

FOOO I A59

PRINTER 10 I

PRINT SCREEN

PRINT-SCREEN I

PROC SHUTDOWN

PROT-PRT HEX

PRT HEX -

PRT-SEG

P MSG

P-O R

READ AC CURRENT

READ-CURSOR

READ-DOT

READ-LPEN

RE DTRECT

ROM CHECK

RmCCHECKSUM

ROM-ERR

RS232 10 1

RTC INT -

SCROLL DOWN

SCROLL-UP

SEEK -

SEEKS 1

SET Ci:iLoR

SET-CPOS

SET-CTYPE

SET-MODE

SET-TOO

SHuT2

SHUT3

SHUT4

SHUTe,

SHUT7

SHUT9

SLAVE VECTOR TA8LE

SND DATA -

START I

STGTST CNT

SYSINITI

TIMER I NT I

TIME OF DAY

TUTOR -

VECTOR T A8LE

VIDEO To

I

V IDEO-PARMS

VIDEO-STATE

WAI TF-

WR ITE AC CURRENT

WRITE-C CURRENT

WR 1TE-D'OT

WR I TE-TTY

XMIT 8042

XPC_BYTE

FOOO E126

FOOO EI3F

FOOO EI68

FOOO EI91

FOOO E187

FOOO EI08

FOOO EIEE

FOOO E209

FOOO E224

FOOO E239

FOOO E25D

FOOO E2C3

FOOO E2Cb

FOOO E2EA

FOOO E30E

FOOD E31E

FOOO E32E

FOOO E343

FOOD E364

FOOO E379

FOOO E38E

FOOO E3AC

FOOO E38F

FOOD E302

FOOO E30F

FOOD E40 1

FOOO E6F5

FOOO E729

FOOO E87E

FOOO E886

FOOD E88E

FOOO Eece

FOOO E8El

FOOO E91B

FOOO E955

FOOO E95F

FOOO E969

FOOD E976

FOOO EFC7

FOOO FOA4

FOOO FOE4

FOOO FOEC

FOOO FOF4

FOOO FA6E

FOOO FEF3

FOOO FF23

FOOO FF53

FOOO FF54

FOOO FF5A

FOOO FF5E

FOOO FF&2

FOOO FF66

FOOO FFFO

THE 810S ROUT I NES ARE MEANT TO BE ACCESSED THROUGH

SOFTWARE INTERRUPTS ONLY. ANY ADDRESSES PRESENT IN

THESE LIST I NGS ARE INCLUDED ONL Y FOR COMPLETENESS.

NOT FOR REFERENCE. APPL I CAT IONS WH I CH REFERENCE ANY

A8S0LUTE ADDRESSES WITHIN THE CODE SEGMENTS OF 810S

VIOLATE THE STRUCTURE AND DESIGN OF 8105. ADDRESSES

WITHIN THE 8105 CODE SEGMENT ARE SU8..JECT TO CHANGE

AND ROUTINES SHOULD BE ACCESSED THROUGH POINTERS IN

THE INTERRUPT VECTORS OR WHEN NECESSARY THROUGH THE

POINTERS IN THE 8105 "DATA" SEGMENT.

El09

E161

E162

E163

E164

E201

E202

E203

E301

E302

F3D

NMI INT

E303

E304

E401

E50 I

E601

E602

FI78D

FI781

FI782

FI790

FI791

F3A

..

F3DI

FD TBL

CONF TBL

AI .,

.8

.9

"0

.

" '15

DISK BASE

VIDEO PARMS .5

.,

CRT CHAR GEN

VECTOR TA8LE

SLAVE VECTOR TABLE

DUMMY-RETURN­

PR I NT-SCREEN

HRD ­

FLOPPY

SEEKS I

TUTOR­

P _O_R

MAP

5-27

30

37

38

., 3'

40

51

52

53

5'

55

50

57

58

5.

60 bl

02 b3 b4 b5

.0

.7

.8

50

72

73

7.

75

7b

77

78

79 eo

81

.2

03

00 n

08 o.

70

71

8.

8b

..

87

88

.0

.2

••

• 5

'b ..

'8

100

101

102

10.

10.

'.5

100

107

108

10.

110

28

2'

30

31

32

33

2.

2b

.. "

21

2.

23

27

17

18

I

2

3 b

4

•

7

•

•

10

II

"

"

14

IBN Pe,.sonal COIllPut.,. MACRO Asa,embl.,.

TEST! - - - -

Ve,.slon 2.00

Ob/10/85 POWER ON SELF TEST (POST)

I - I

Ob-10-85

PAGE 118,121

TITLE TEST! - - - .

.28bC

ObI 101M POWER ON SELF TEST (POST)

8105 I/O INTERFACE

THESE LISTINGS PROVIDE INTERFACE IJIFORMATION FOR ACCESSING

THE 810S ROUTINES. THE POWER ON SELF TEST IS INCLUDED.

THE BIOS ROUT! NES ARE MEANT TO 8E ACCESSED THROUGH

SOFTWARE INTERRUPTS ONLY.

THESE LISTINGS ARE INCLUDED

NOT FOR REFERENCE.

ANY ADDRESSES

ONLY FOR

PRESENT IN

COMPLETENESS,

APPLICATIONS WHICH REFERENCE ANy

ABSOLUTE ADDRESSES WITHIN THE CODE SEGMENTS OF 8105

VIOLATE THE STRUCTURE AND DESIGN OF 8105.

MODULE REFERENCE

TEST! .ASM

OSEG.INC

POSTEQU.INC

SYSOATA.INC

TEST2.ASM

TEST3.ASM

TEST4.ASM

TEST5.ASM

TESTb. ASM

DSKETTE. ASM

OISK.ASM

KYBD.ASM

PRT.ASM

RS232.ASM

VIOE01.ASM

BIOS.ASM

BIOSI.ASM

810S2.ASM

ORGS.ASM

POST AND MANUFACTURING TEST ROUTINES

DATA SEGMENTS LOCATIONS

COMMON EQUATES FOR POST AND BIOS

POWER ON SELF TEST EQUATES FOR PROTECTED MODE

POST TEST. 0 I THROUGH TEST. 16

POST TEST AND INITIALIZATION ROUTINES

POST TEST. 17 THROUGH TEST. 22

!"OST EXCEPTION INTERRUPT TESTS

POST AND BIOS UTILITY ROUTINES

CMOS READ

CMOS-WRITE

DDS -

-

-

-

READ CMOS LOCATION ROUTINE

WRITE CMOS LOCATION ROUTINE

LOAD IDS:) WITH DATA SEGMENT

E IotSG t.4FG HALT

P MSG

ERR BEEP

8EEP

WAITF

CONFIG 8AO

XPC BYTE

PRT-HEX

PRT-SEG

POST ERROR MESSAGE HANDLER

MANUFACTUR I NG ERROR TRAP

POST STRING DISPLAY ROUTINE

POST ERROR BEEP PROCEDURE

SPEAKER 8EEP CONTROL ROUTINE

FIXED TIME WAIT ROUTINE

SET BAD CONFIG IN CMOS DIAG

DISPLAY-HEX BYTE AS 00-- FF

01 SPLAY CHARACTER

01 SPLAY SEGMENT FORMAT ADDRESS

PROT PRT HEX POST PROTECTED MODE DISPLAY

ROM CHECKSUM CHECK ROM MODULES FOR CHECKSUM

ROM-CHECK ROM SCAN AND I NIT I AL I ZE

KBD-RESET

BLINK INT

SET TCD

0 " -

POST KEYBOARD RESET ROUTINE

MANUFACTURING TOGGLE 81T ROUTINE

SET TIMER FROM CMOS RTC

DUMMY INTERRUPT HANDLER ->INT nH

RE DIRECT

INT 281

-

-

HARDWARE IN:r 9 REDIRECT (L 2)

HARDWARE INT 13 REDIRECT (2871

PROG SHUTDOWN 80286 RESET ROUT I NE

EXCEPTToN I NTERRUPT TEST HANDLERS FOR POST TESTS

SYSINITI BUILD PROTECTED MODE POINTERS

GOT BLD BU I LD THE GOT F"DR POST

SlOT BLD BUILD THE lOT FOR POST

POST T'fSTS ANO SYSTEM BOOT STRAP

STGTST eNT SEGMENT STORAGE TEST

ROM ERR

XMIT 80-42

BOOT:STRAP"

-

-

-

ROM ERROR DISPLAY ROUTINE

KEYBOARD DIAGNOSTIC OUTPUT

BOOT STRAP LOADER -I NT 19H

DISKETTE BIOS

DISKETTE 10 1 -

DISK I NT-l -

INT 13H BIOS ENTRY (-40H) -INT 13H

HARDWARE I NTERRUPT HANDLER -I NT OEH

OSKETTE SETUP POST SETUP DRIVE TYPES

FIXED DISK BIOS

DISK SETUF

DISK-IO

HD INT

KEYB15ARD B I OS

-

SETLP 0 I SK VECTORS AND TEST

INT 13H BIOS ENTRY -INT 13H

HARDWARE INTERRUPT HANDLER - INT 1bH

KEYBOARD 10 1 INT 16H BIOS ENTRY

KB INT 1HARDWARE INTERRUPT

SND DATA KEYBOARD TRANSMISSION

PR INTER ADAFTER B I OS

--> COMMUNICATIONS BIOS FOR RS232

--> VIDEO BIOS

BIOS ROUTINES

MEMORY SIZE DET 1 REAL MODE SIZE

EQUIPMENT (--EQUIPMENT DETERMINATION

-INT lbH

-INT 09H

- I NT 17H

-INT I-4H

-INT 10H

NMI INT 1NMI HANDLER

INTERRUPT-15H BIOS ROUTINES

DEV OPEN NULL DEV I CE OPEN HANDLER

DEV-CLOSE

PROG TERM

EVENT WAIT

,JOY 51'1 CK

SYS-REQ

WAIT

-

-

-

-

-

-

NULL DEV I CE CLOSE HANDLER

NULL PROGRAM TERMINATION

-INT 12H

-INT llH

-(NT 02H

-INT 15H

RTC EVENT WAIT/TIMEOUT ROUTINE

,JOYSTICK PORT HANDLER

NULL SYSTEM REQUEST KEY

RTC TIMED .AIT ROUTINE

BLOCK MOVE

GATE A20

EXT MEMORY

EXTENDED MEh40RY h40VE INTERFACE

ADDRESS BIT 20 CONTROL

EXTENDED MEMORY SIZE DETERMI NE

SET-VMOOE

DEVTcE BUSY

SW I TCH PROCESSOR TO V I RTUAL MODE

NULL DEVICE BUSY HANDLER

I NT COMPLETE NULL I NTERRUPT COMPLETE HANOLER

BIOS INTERRUPT ROUTINES

TIME OF DAY 1 TIME OF DAY ROUTINES

RTC TNT1RQ LEVEL 6 ALARM HANDLER

-INT lAH

-I NT 10H

PRINT SCREEN' PRINT SCREe:N ROUTINE

TIMER-INT I TINER I INTERRLPT HANDLER

-INT 05H

->INT ICH

COMPATIBILITY MODULE

POST ERROR MESSAGES

DISKETTE DISK VIDEO DATA TABLES

LIST

5-28 TESTl

IBM Person.' Computer MACRO Assembler Vers'on 2.00

TESTI - - - - 06/10/85 POWER ON SELF TEST (POST)

DSEG.tNC DATA SEGMENTS

PAGE

J NClUDE DSEG. INC

113

114

115

"6

117

118

"9

120

129

130

131

132

133

134

135

13'

137

138

139

140

121

122

123

124

125

126

127

128

,.2

143

144

"5

146

165

16'

167

168

169

170

171

172

173

174

141

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

0000

0000 11

0008

0008 ??111111

0014

0014 ??11???1

0020

??????11

0040

0040 11????1?

004C

004C 711111?1

0060

0060 171?1111

0014

0014 11111111

0078

0018 1111????

001C

001C '?111111

0100

0100 17????11

0104

0104 111?????

0 I 18

011811?11???

OICO

OICO ??111111

01D8

01D8 111??11?

0400

0400 1111

0500

0500

7COO

7COO

7COO

80286 INTERRUPT LOCATIONS

:

; REFERENCED BY POST & BIOS -----

- - - - ------------------ -­

ABSO SEGMENT AT 0

ONMI_PTR

0INT5_PTR

.'NT_PTR

~VIDEO_INT

_BOOT _LOCN

ABSO

DB

ORG

DO

ORG

DO

ORG

DO

4·002H

1

4·005H

1

4·008H

?

4·0 I OH

1

~ORG_ VECTOR

C

C

C .BAStC_PTR

C

C

C OPARM_PTR

C

C

C ODISK_POINTER

C

C

C OEXT _PTR c

C

C . 0 I SK VECTOR

C

C

C .HF _ TBl VEC

C

C

ORG

00

~G

DO

ORG

DO

ORG

DO

ORG

DO

ORG

DO

ORG

DO

4·013H

1

4·01BH

1

4·010H

1

4·01EH

1

4·01FH

1

4·040H

1

4·041H

1

C IIIHFI_TBl_VEC c

ORG

DO

4·046H

?

C ORG

C OSLAVE_INT_PTR DO

C

C

C

C

OHOISK_INT

ORG

DO

C

C OTOS

C

4·010H

1

4·0T6H

7

ORG 0400H

O W ?

.MFG_TEST_RTN

ORG

DO

ORG lABEL

ORG

LABEL

ENDS

0500H

FAR

TCOOH

FAR

1-2

06-10-85

AODRESS= 0000:0000

START OF INTERRUPT VECTOR TABLE

NON-MASK ABLE I NTERRUPT VECTOR

PR I NT SCREEN I NTERRUPT VECTOR

HARDWARE I NTERRUPT PO INTER (8-F I

V IDEO 110 I NTERRUPT VECTOR

DISKETTE/DISK INTERRUPT VECTOR

; POINTER TO CASSETTE BASIC

I PO I NTER TO V I OED PARAMETERS

POINTER TO DISKETTE PARAMETER TABLE

POINTER TO GRAPHIC CHARACTERS 128-255

POINTER TO DISKETTE INTERRUPT CODE

POINTER TO FIRST DISK PARAMETER TABLE

POINTER TO SECONO 01 SK PARAMETER TABLE

I POINTER TO SLAVE INTERRUPT HANDLER

PO I NTER TO F I XED 0 I SK I NTERRUPT CODE

STACK -­ USED DURING POST ONLY

USE WILL OVERLAY I NTERRUPTS VECTORS

LOAD LOCATION FOR MANUFACTURING TESTS

BOOT STRAP CODE lOAD lOCA T [ON

TESTl

5-29

IT.

IT.

ITT

IT.

IT.

,.,

0000

182 0000 1111

183 0002

184 0004

1111

1?11

IBe 0006 1111

186 0008 ????

18T OOOA 1111

188 Dooe 1111

189 aODE

190 0010

1111

1111

191 0012 11

192 0013 1111

193 Dale 11

194 0016 11

'"

I.T

".

'"

0017 11

201 0018 11

202 0019 11

203 OOIA 1111

204 ODIC 1111 zoo

ZOO

ZOT

10 208 ODIE

209

ZIO

211

212

213

214

215

21b DOlE 11

ZI T

ZI.

219 OOlF 11 zzo

ZZI

222 0040 11

223 0041 11

224

225 0042

226

22T

22.

22'

230

231

01

232

233

234 0049 11

235 004,\?? 11

236 004C 1111

237 004E 1111

238 0050 08

239

Z.,

2.2 0060 1111

2.3 0062

24'

0063

2•• OOElS

24. 0066

24T

11

1111

11

11

24.

24.

2.0

251

252

253 0061?? 11

254 0069 1111

255 006B 11

25.

25T

25.

25.

2'.

261 D06e 1111

262 DObE 1111

263 0010 11

2.'

2 ••

2 ••

2.T

2••

269 0011 11

210 0072 1111

2T I

2T2

2T3

2T,

2T,

216 OOT4

211 0075

218 0016

219 0011

1111

11 n

11

1-3

06-10-85

C PAGE

C 1-- - - - - - - - - - - - - --- - - - - - - - - - - - - - - - - - - - - - -­

C J ROt.4 BIOS DATA AREAS

C ;

-

- - - -

-

- - - - - -

--------

- - - - - - -

---------

- -

-­

C

C DATA

C

SEG~ENT AT 40H

C

C

C

C

C

C

C

C

C PECU IP FLAG ow ow ow ow ow ow ow ow ow

C OMFG TST

C .MEMORY SIZE

C PMFG_ERRJLAG

C

DB ow

DB

DB

C

C

C ;

;--------------------------- ------------­

KEYBOARD DATA AREAS

C ;

-------------

- -

-

-

---------

- - - -

--

- -

----­

C

C PKB FLAG

C PKS-FLAG I

DB

DB

C PALT INPUT

C PBUFFER HEAD

C PBUFFER:T A I L

C

C

C

C

C

1-----­

DB

OW

Ow

HEAD: TAIL ow

16 DUP! 1)

I

;

;

;

;

:

INDICATES THAT

I

,

I

I

;

;

;

;

;

C

C

C

C

C

C

C

C ;--

-

C I

C ;

-------------------

- - ------

----------

-­

C

---- ------------

-------._--------­

0 I SKETTE DATA AREAS :

DB

DB

ADDRESS: 0040: 0000

BASE ADDRESSES OF RSZ32 ADAPTERS

SECOND LOG I CAL RS23Z ADAPTER

RESERVED

RESERVED

BASE ADDRESSES OF PR I NTER ADAPTERS

SECOND LOG I CAL PR I NTER ADAPTER

TH I RD LOG I CAL PR I NTER ADAPTER

RESERVED

INSTALLED HARDWARE FLAGS

INITIALIZATION FLAGS

BASE ~E~ORY SIZE IN K BYTES

SCRATCHPAD FOR MANUFACTURING

ERROR CODES

IX 1024)

KEYBOARD SHIFT STATE AND STATUS FLAGS

SECOND BYTE OF KEYBOARD STATUS

STORAGE FOR ALTERNATE KEY PAD ENTRY

PO I NTER TO HEAD OF KEYBOARD BUFFER

POINTER TO TAIL OF KEYBOARD BUFFER

THE BUFFER IS EMPTY

ROOM FOR 1 5 SCAN CODE ENTR I ES

DRIVE RECALIBRATION STATUS

BIT 3-0 : DRIVE 3-0 RECALIBRATION

BEFORE NEXT SEEK IF BIT IS : 0

MOTOR STATUS

BIT 3-0 : DRIVE 3-0 CURRENTLY RUNNING

BIT 1 : CURRENT OPERATION I S A WRITE

TIME OUT COUNTER FOR MOTORIS) TURN OFF

RETURN CODE STATUS BYTE

CMD BLOCK IN STACK FOR DISK OPERATION

STA"fUS BYTES FROM DISKETTE OPERATION

C

C PWOTOR COUNT DB

C PDSKET"fE_STATUS DB

C

C

C

C

DB 1 DUP!?)

;

;

C

C

C ;

C ;

--------_. -----------------

---

---------­

VIDEO DISPLAY DATA AREA

C

I ;------------------ ---------------------.

C

C PCRT MODE

C PCRT-COLS

C PCRT-LEN

C PeRT-START

C ,"CURSOR_POSN

C

DB ow

Ow ow

Ow

,

8 QUP(?)

CURRENT DISPLAY MODE (TYPE)

NUMBER OF COLUMNS ON SCREEN

LENGTH OF REGEN BUFFER I N BYTES

STARTING ADDRESS IN REGEN BUFFER

CURSOR FOR EACH OF UP TO 8 PAGES

C

C

C PCURSOR MODE

C PACT I VE-PAGE

C ,"AOOR 6845

C ,"CRT MODE SET

C ,"CRT=:PALETTE

C

C ow

DB

OW

DB

DB

C ;

C ;

POST AND BIOS WORK DATA AREA --

- - - - - - -

----

-

-----

- _.

-

-

---------

- --­

C

C

C 010 ROM INIT

C OIO-ROM-SEG ow

OW

;

;

I

C PIN"fR_F[AG DB

C

C ;

C ;

----

C

C

-----------------

TIMER DATA AREA

;------- -

C OT I MER LOW

------------

C ,"TIMER-HIGH

C OT IMER:OFL ow ow

DB

------

- ------

------------­

---------

---­

C

C

C ;

;

-

--------

- ----.

------------

-

---

- -

----­

SYSTEM DATA AREA

;

;

;

I

C

C

C ,"BIOS BREAK DB

C ORE SET_FLAG

C

C ;

--

- - - - -

-

-

------

OW

----

- -

-

- -

--

-

---------

- -

-­

C ;

C ;

C

FIXED DISK DATA AREAS

-- - - - - - - -

---------

- - - - - - - -

-----------­

DB

;

:

C PDISK STATUSI

C OHF NOM

C DCONTROL BYTE

C DPORT_OFi!'

DB

DB

DB

;

CURRENT CURSOR MODE SETTING

CURRENT PAGE BEING DISPLAYED

BASE ADDRESS FOR ACTIVE DISPLAY CARD

CURRENT SETTING OF THE 3xa REGISTER

CURRENT PALETTE SETT I NG COLOR CARD

STACK SAVE, etc.

POINTER TO ROM INITIALIZATION ROUTINE

POINTER TO I/O ROM SEGMENT

FLAG INDICATING AN INTERRUPT HAPPENED

LOW WORD OF T I MER COUNT

HIGH WORD OF TIMER COUNT

TIMER HAS ROLLED OVER SINCE LAST READ

BIT 1:1 IF BREAK KEY HAS BEEN PRESSED

WORD: I 234H I F KEYBOARD RESET UNDERWA Y

FIXED DISK STATUS

COUNT OF FIXED DISK DRIVES

HEAO CONTROL BYTE

RESERVED (PORT OFFSET)

5-30 TESTl

33'

340 0098

341 009A

342 009C

343 009E

344 OOAO

345

345

347

348

34.

350 OOAI

351

352

353

354

355

355

357

358 00A8

35'

350

351

352

353

354

355 0100

355

357 0100

358

35'

370 olor

371

372

280

281

282

283

284

285 0018

28. 0019

287 007A

288 OOlB

28' 001C

290 0010

291 OOlE

292 OOlF

293

294

295

2'5

297

298

299 0080

300 0082

301

302

303

304

305

305 0084

307 0085

308 0087

30'

0088

310 0089

311 008A

312

313

314

315

315

317 008B

318 OG8C

319 0080

320 008E

321 008F

322 0090

323 0091

324 0092

325 0093

325 0094

327 • 0095

328

329

330

331

332

333 0096

334 0091

335

335

337

338

??

"

11

11

11

11

1111

1111

1111

"

11

"

"

11

11

11

77

77

11

??

'?

11

??

??

?1

??

07 [

11

11111111 rBM Pep'eon_1 Compljtep' MACRO Assamblep' Vap'elon 2.00

TESTI - - - - 06/10/85 POWER ON SELF TEST {POSTI

DSEG. INC DATA SEGMENTS

1-4

06-10-55 e

PAGE e c

; e

,-

--- -- - - - -

---------e e

IlIPR I NT_T 1M_OUT DB e

DB

-

-----

TIME-OUT VARIABLES

-

----------

- -­

I

C e

DB

DB e

ORS232_TIM_OUT DB e e e e e e

I e e c

;

DB

DB

DB

ADDITIONAL KEYBOARD DATA AREA

--------------- ---- ---------­ e

OBUFFER START OW e oeUFFER:END OW e e

,--

- - -

---------------e

ODSK_STATE e e e e oaSK_TRK e c e

; e

; e c

ADD

- -

-

-

-

-

------------­ e

; EGA/PGA DISPLAY WORK AREA e

1-- - - - - - - - - - - - - - - - - - - - - - - - - - --- - -- - -- - - - ­ c e

DROWS e .POINTS e tllNFO e

OINFO_3 e e e e e

;

1----- ------------------------------- ---­ e

;

--------

DB

OW

DB

DB

DB

DB

ADDITIONAL MEDIA DATA -------------------------------­ e e tlLASTRATE e tlHF STATUS e

OHF-CNTR'L

DB

DB e .HF-ERROR DB e

OHF-I NT FLAG DB

DB

DB

DB

DB

DB

DB

DB

-------------------------------

- - - -----­

I T 1 ONAL KEYBOARD FLAGS

,

;

;

I

I

I

I

;

;

I

;

;

;

;

;

;

; C OKB FLAG 3 e

OKB:FLAG:2 e e

; e e e e

-e e e e e

I e

;

-e

; e

; e

; e e e e e

--

-

- - - e

; REAL T I ME CLOCK OAT A AREA e

1--- - - - - - - - - --- --- - - - - - -- - - - - --- - - - - - - - -­ e e

OUSER FLAG OW e tlU5ER-FLAG 5EG OW e

PRTC COW -

C PRTC-HIGH

OW

OW e

PRTC:WA IT_FLAG 08 e e

1-- - - - - - - - -- - - - - - - - - - - - - ---- - - - - - - - - -- - - ­ e

; AREA FOR NETWORK ADAPTER e

1-- - - - - - - - - - - - - - -- - - - - - - - - - - -- - - - --- - - --­ e e

ONET DB 7 DUP(?) e e

DATA

--

--

- -

------------- --

EGA/PGA PALETTE POINTER ---------

-------------

-

-

- -

DB

DB

--

DO

- -

------------

----------

-

--

- - -

----­

------------------------­

DRG

DB

ENDS

- -

-

-----------------­

--

- -

-----------

DATA AREA PRINT SCREEN

100H

- -

-­

;

I

;

I

;

1

;

;

:

:

;

;

:

; r r

I

T J ME OUT COUN1ERS FOR PR I NTER RESPONSE

SECOND LOG I CAL PR I NTER ADAPTER

TH I RD LOG I CAL PR I NTER ADAPTER

RESERVED

T I ME OUT COUNTERS FOR RS232 RESPONSE

SECOND LOGICAL RS232 ADAPTER

RESERVED

RESERVED

BUFFER LOCATION WITHIN SEGMENT 40H

OFFSET OF KEYBOARD BUFFER START

OFFSET OF END OF BUFFER

ROWS ON THE ACTIVE SCREEN (LESS 1)

BYTES PER CHARACTER

MODE OPTIONS

FEATURE BIT SWITCHES

RESERVED FOR DI SPLAY ADAPTERS

RESERVED FOR 0 I SPLAY ADAPTERS

LAST 0 I SKETTE DATA RATE SELECTED

STATUS REGISTER

ERROR REG I S TER

F I XED 0 I SK I NTERRUPT FLAG

COMBO FIXED DISK/DISKETTE CARD BIT 0,.1

DRIVE 0 MEDIA STATE

DRIVE 1 MEDIA STATE

DRIVE 0 OPERATION START STATE

DRIVE 1 OPERATION START STATE

DRIVE 0 PRESENT CYLINOER

DR I VE I PRESENT CYL I NDER

KEYBOARD MOOE STATE AND TYPE FLAGS

KEYBOARD LED FLAGS

OFFSET ADDRESS OF USERS WA I T FLAG

SEGMENT ADDRESS OF USER WA I T FLAG

LOW WORD OF USER WA J T FLAG

HIGH WORD OF USER WAIT FLAG

WAIT ACTIVE FLAG 101=BUSY, 80=POSTED)

(OO=POST ACKNOWLEDGED)

RESERVED FOR NETWORK ADAPTERS

PO I NTER TO EGA PARAMETER CONTROL BLOCK

RESERVED

ADDRESS= 0040:0100 lREF 0050;0000)

PRINT SCREEN STATUS BYTE

OO=READY/OK, OI=BUSY. FF:;:ERROR

END OF B I OS OAT A SEGMENT

.LIST

TEST 1 5-31

'37

43.

. 3 .

" 0

'"

' . 3

•••

445

'46

447

.

=

000 I

0002

0004

=

0008

0010

0020

0040

=

0080

44.

,49

450

=

0004

0008

'51 = 0010

.52 a0020

'53

.54

0040

0080

'55

456

457

.5.

45'

460

'61

" 2

4 "

' 6 '

'65

'66

461 46.

469

410

471

'72

0007

00 I a

0020

0040

0080

000 I

0002

0004

0020

0040

0080

" 3

4 , . 00A8

475

'76

417

418

0041

0038

0010

003A

.83

0053

' 7 '

'80

.81

002A

4.2

0052

0045

0036

0046

' 8 '

485 0054

.21

'22

'23

424

425

426

.21

42.

42'

'30

.31

.32

433

43.

435

436

' 0 '

401

408

.09

=

0006

0010

0020 410

411 0040

0080 412

.13 .,.

0060

419

OOAA

=

OOAB

=

OOAO

OOAE

420 :::. OOCO

0000

OODF

OOEO

OOFE

0001

=

OOED

00F2

00F4

OOAA

OOFA

OOFE

OOFF

313

374

375

376

377

378

379

380

381

382

383

384

385

386

387

38.

389

390

391

392

393

3 ••

OOFC

=

0000

=

000 I

=

F8AT

=

F9FD

3'5

3"

3"

39.

399

.00

401

0060

0061

00F3

OOOC

OOCO

0001

0002

0010

0020

0040

0060

00b4

0001

0002

0004

0008

'02 0010

.03

0020

' 0 '

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405 a0080

T~~~

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P~~~~n ~~I 7~iC~t·~O:~~RgNA;~~~b

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~~~~! on 2.00

POSTEQU. INC COMMON EQUATES

1-5

Ob-10-85

PAGE e

INCLUDE PQSTEQU. INC e

; e

; e e e

MODEL BYTE EQU e

SUB NODEL BYTE EQU e

BID!; LEVEL e

RATE-UPPER e

RATE:LOWER e

EQU

EQU

EQU e e

-- --- --- - -

~~;~-;---e

PORT-B e

RAM PAR ON e

RAM-PAR-OFF e

PARTTY ERR e

GATE2 e

SPK2 e

KB_LEDS e e

FA e K8-FE

---------

- --- - ------------- --­

EQUATES USED BY POST AND BIOS

=

-SYSTEM FLAG -POST/-SELF TEST e

8ASE-MEM e MFG LOOP e

DSP-.JMP e

KEY=BD_INH[B

EQU

EQU

EQU

EQU

OOOOIOOOB

000100008

OOIOOOOOB

010000008

Eeu 10000000B e e

, - - - - - - - - - 8042 COMMANDS - - - - - - - - - - - - ­ e

WR I TE 8042 LOC EQU e

SELF TEST EQU e

[NTR-FACE CK e

DIS 'KBO -

EQU

EQU e

ENA-KBO EQU e

READ 8042 INPUT EQU e

D I SA8LE BIT20 EQU e

ENABLE 81T20 EQU e

KYBD cD"

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SHUT-CMDe

KYBD:CLK e e

EQU

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~~~-~~~---- KEYB~~~D/LEO o~g~MANDS e

KB A'EAD I D EQU OF2H e

KB:ENABLE e e e

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KB-RESEND e

KB:OVER_RUN e

8042

EQU

E~~YBOAR~A~~SPONSE

EQU

EQU

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OF4H

OFAH

OFEH

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BASE PLANAR R7w MEMORY EXTENSION 640/X

• BASE PLANAR RIW MEMORY SIZE 2%/512

; LOOP POST .JUMPER BIT FOR MANUFACTURING

; DISPLAY TYPE SWITCH .JUMPER BIT

; KEYBOARD INH[B[T SWITCH BIT

I WRITE 8042 COMMAND BYTE

; 8042 SELF TEST

I CHECK 8042 INTERFACE COMMAND

; 01 SABLE KEYBOARD COMMAND

ENABLE KEYBOARD COMMAND

READ 8042 t NPUT PORT

DISABLE ADDRESS LINE BIT 20

ENABLE ADDRESS LINE BIT 20

GET KEYBOARD CLOCK AND DATA COMMAND

CAUSE A SHUTDOWN COM'-4AND

KEYBOARD CLOCK BIT 0

; LED WR [TE COMMAND

; READ KEYBOARD 10 COMMAND

I KEYBOARD ENABLE

; RESPONSE FROM SELF DIAGNOSTIC

; ACKNOWLEDGE FROM TRANSM I SS I ON

; RESEND REQUEST

; OVER RUN SCAN CODE e

;--~------FLAG EQUATES WITHIN t'lK8 FLAG - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ­ e

RIGHT SHIFT EQU OOOOOOOIB RIGHT SHIFT KEY DEPRESSED e

LEFT

~HIFT e

CTL

~HIFT e

ALT-SHIFT e

SCRoLL STATE e

NUM STATE e

CAPS STATE e

INS_STATE e

EQU

EQU

EQU

EQU

EQU

EQU

EQU

OOOOOOIOB

00000100B

OOOOIOOOB

00010000B

00100000B a

I OOOOOOB

10000000B

LEFT SHIFT KEY DEPRESSED

CONTROL SHIFT KEY DEPRESSED

ALTERNATE SHIFT KEY DEPRESSED

SCROLL LOCK STATE HAS BEEN TOGGLED

NUM LOCK STATE HAS BEEN TOGGLED

CAPS LOCK STATE HAS BEEN TOGGLED

INSERT STATE [S ACTIVE e

; - - - - - - - - - - FLAG EQUATES WITHIN qIOKB FLAG 1 - - - - - - - - - - - - - - - - - - - - - - - - - - ­ e

SYS SHIFT EQU OOOOOIOOB -SYSTEM KEY DEPRESSED AND HELD e

HOLD STATE e

SCROLL SHIFT e

NUM_SHIFT e

EQU

Eeu

Eeu

0000 1000B

OOOIOOOOB

001 OOOOOB

SUSPEND KEY HAS BEEN TOGGLED

; SCROLL LOCK KEY IS DEPRESSED

; NUM LOCK KEY I S DEPRESSED

CAPS_SHIFT e

[NS_SH 1FT

EQU

EQU

OIOOOOOOB

10000000B

I CAPS LOCK KEY IS DEPRESSED

; I NSERT KEY I S DEPRESSED e e ;-------

-- FLAGS EQUATES WITHIN qIOKB FLAG 2 - - - - - - - - - - - - - - - - - - - - - - - - - ­

~B e

KB-PR LED e

KB:ERA' e e

8042 e

PARTTY_EVEN e e e

~~;~-;~;;8042

EQU

EQU

EQU

EQU

EQU

Eeu

OFCH

OOOH

OOIH

OF8A'1H

OF9FDH

~~~BOARDO!~~ERFACE

EQU

EQU

EQU

EQU

EQU e

REFRESH BIT e

OUT2 e

10 CHECK e

PARITY CHECK

EQU

EQU

EQU

EQU

EQU e

STATUS-PORT I;;QU e

OUT BUF FULL EQU e

INP'f BUF FULL EQU e

SYS FLAGEQU e

CMO-OATA e

KYBD INH e

TRANS TMOUT e

RCV TioUT

EQU

EQU

EQU

EQU

Eeu

OblH

11110011B

0000 I 'OOB

11000000B

OOOOOOOIB

00000010B

OOOIOOOOB

OOIOOOOOB

01 OOOOOOB lOOOOOOOB

064H

000000018

000000108

OOOOOIOOB

00001000B

OOOIOOOOB

OOIOOOOOB

OIOOOOOOB

10000000B

000001118

OOOOIOOOB

0001 OOOOB

00 I OOOOOB

010000008

10000000B

AND

-

SYSTEM MODEL BYTE

SYSTEM SUB-MODEL TYPE

BIOS REVISION LEVEL

OF952H + 1 01

OF952H -101

DIA~~~~T~~v~g~~~o~c~~G~~~~~~O~~~~~-;~R~--

• PORT B READ/WRITE DIAGNOSTIC REGISTER

; AND MASK FOR PARITY CHECKING ENABLE ON

; OR MASK FOR PAR I TY CHECK ING ENABLE OFF

; RIW MEMORY [/0 CHANNEL PARITY ERROR

TIMER 2 INPUT GATE CLOCK 81T

SPEAKER OUTPUT DATA ENABLE BIT

REFRESH TEST BIT

SPEAKER TIMER OUT2 INPUT BIT

110 I MEMORY) CI'£CK OCCURRED BIT MASK

MEMORY PARITY CHECK OCCURRED 81T MASK

8042 STATUS PORT

0

=

+OUTPUT BUFFER FULL

=

+INPUT BUFFER FULL

=

=

=

-COMMAND/+DATA

=

+KEYBOARD INHIBITED

+TRANSMIT TIMEOUT

:: +RECEIVE TIME OUT

+PARITY IS EVEN

INPUT PORT BIT DEFINITION SAVED IN .MFG TST - - - - - - - - - - - - - - - - - - - ­

KEYBOARD LEO STATE BITS

RESERVED (MUST BE ZERO)

ACKNOWLEDGMENT RECE I VED

RESEND RECEI VEO FLAG

MODE INDICATOR UPDATE

KEYBOARD TRANSM IT ERROR FLAG

; - - - - - - - - - - FLAGS EQUATES WITHIN qIOKB FLAG 3 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ­ e

KBX EQU 00000001B I RBX INSTALLED e

LC_HC e

GRAPH ON e e ;ET NUM LK

Eeu

EQU

EQU

00000010B

OOOOOIOOB

OOOIIOOOB e

LC AB e

RD:1D

EQU

EQU

EQU

00 I OOOOOB a

I OOOOOOB

10000000B e e

; - - - - - - - - - - KEYBOARD SCAN CODES e

10_' e

10 2 e

AL T KEY e

CTL-KEY e

CAPS KEY e

DEL KEY e

INS-KEY e

LEFT KEY e

NUM KEY e

RIGHT KEY e

SCROLL KEY e

SYS_KEY

EQU

EQU

EQU

EQU

EQU

EQU

EQU

EQU

EQU

EQU

EQU

EQU

OABH

041H

56

29

58

63

62

42 b9

54

7 a

84 l LAST SCAN COOED WAS A HIDDEN CODE

ALL GRAPHICS KEY DOWN (W.T. ONLY)

RESERVED (MUST BE ZERO)

FORCE NUM LOCK IF READ 10 AND KBX

LAST CHARACTER WAS FIRST 10 CHARACTER

DOING A READ 10 (MUST BE BITO)

1ST 10 CHARACTER FOR KBX

2ND 10 CHARACTER FOR KBX

SCAN CODE FOR ALTERNA TE SH I FT KEY

SCAN CODE FOR CONTROL KEY

SCAN CODE FOR SHIFT LOCK KEY

SCAN CODE FOR DELETE KEY

SCAN CODE FOR I NSERT KEY

SCAN CODE FOR LEFT SH I FT

SCAN CODE FOR NUMBER LOCK KEY

SCAN CODE FOR RIGHT SH I FT

SCAN CODE FOR SCROLL LOCK KEY

SCAN CODE FOR SYSTEM KEY

~

5-32

TESTl

IBM Peraone' Computer MACRO Aaae.bler lIeraion 2.00

TESTI - - - 06/10/85 POWER ON SELF TEST (POST)

POSTEQU.INC COMMON EQUATES

521 '" 0019

522 '" OOIA

523

524 002E

525 002F

526 ;;; 0030

527 0031

528 '" 0032

529 0033

530

531

532

533

=

0004

534 '" 0008

535

536

531

538

=

0010

=

0020

=

0040

=

0080

539

54.

541

542

=

0080

543

544

545

546

547

548

549

550

551 '" 0004

552

=

0030

553

554

555

556

551

=

OOOA

0002

=

OOOF

=

0014

=

0025

556

=

0001

0080

=

0080

=

0010

=

0010

55'

560

561

562

563

564

565

566

=

0080

0040

0020

0010

0009

0008

0006

567

568

569

0004

=

0003

=

0002

510 '" 0001

511

512

513 '" 0001

574 '" 0002

515

51.

571 '" 0001

578 0002

519 0004

580

581

582

583

584

585

586

0010

0020

OOCO

0000

0040

0080

OOOC

587 '" OOCO

566

56'

590 '" 0000

591

=

0001

592

593

=

0002

=

0007

46.

461

466

469

490

491

492

493

494

0070

0071 ooeo

4'5

496

491

498

=

0000

=

000 I

=

0002

499

500

0003

=

0004

50 I

:0:

0005

502

503

=

0006

0001

504

505

506

507

508

509

510

511

512

0008

0009

OOOA

OOOB

OOOC

0000

OOOE

OOOF

0010

513

514 '"

515

0012

516 • 0014

511 '" 0015

518 '" 0016

519 '" 0011

520

:I:

0018

1-.

06-10-85

C PAGE

C

C

C

I

,~~-----

CMOS EQUATES FOR THI S SYSTEM

- ---

C CMOS PORT

---------------------

EQU 010H

-

-

-

-------------------------

- - - -------- - -----­

; I/O ADDRESS OF CMOS ADDRESS PORT

C CMOS-DATA

C NMI

EQU

EQU

011H

10000000B

; I/O ADDRESS OF CMOS DATA PORT

; DISABLE NMI INTERRUPTS MASK ­

C

C

HIGH BIT OF CMOS LOCATION ADDRESS

C ; - - - - - - - - - - CMOS TABLE LOCATION ADDRESS'S • • - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ­

C CMOS SECONDS EQU OOOH I SECONDS

C CMOS-SEC ALARM EQU

C

C g~g;:~:~O!E~RM ~~~ gg~~

C CMOS-HOURS EQU

OOIH

004H

C CMOS-HR ALARM

C

C

EQU 005H g~g;:g:~-:~~H ~~~ gg~~

C CMOS-MONTH

C

C g~gF~~~\

EQU 008H

~~~ gg:~

I SECONDS ALARM I I NOTE: ALL LOCATIONS

: ~:~~i~;

; HOURS

ALARM

; HOURS ALARM

Il~ET~~C~i ~~~~

AND SUB..ECT TO

CHANGE. ONLY THE

! g:~ g~ i~~ =~~~H ~~~~~ B~~~Eg~E~

MONTH

I

ACCESS LOCATIONS i~:~U~T:~G~~~~~S! L~~_:~~:_:~~~~~~.:

C CMOS-REG-B

C CMOS-REG-C

C CMOS-REG-D

C CMOS-DIAG

EQU

EQU

EQU

EQU

OOBH

OOCH

OODH

OOEH

C CMOS-SHUT DOWN EQU

C CMOS-DISKETTE

C

C

C

6MOS=DISK

EQU

QOFH

~~~ g:~~

EQU

OIOH

013H

STATUS REGISTER B ALARM

STATUS REGISTER C FLAGS

STATUS REGISTER 0 BATTERY

POST DIAGNOSTIC STATUS RESULTS BYTE

SHUTDOWN STATUS COMMAND BYTE

DISKETTE DRIVE TYPE BYTE

;1~~~E~i~~

TYPE BYTE

RESERVED

; i~

IE

C

C

C

C

C

C

C

C

C

C

~MOS

CKSUM HI

CMOS-CK5UM-LO

C CMOS-U M S-LO

C CMOS-U-M-S-HI

C CMOS-CENTURY

EQU

EQU

EQU

EQU

EQU

EQU

EQU

EQU

EQU

EQU

EQU

EQU

EQU

014H

OISH

016H

OI1H

018H

019H

01AH

01 BH

02EH

02FH

030H

031 H

032H

; EQUIPMENT WORD LOW BYTE ;C

; BASE MEMORY SIZE LOW BYTE IX1024) ;K

BASE MEMORY SIZE HIGH BYTE

EXPANSION MEMORY SIZE LOW BYTE

;S

;U

EXPANSION MEMORY SIZE HIGH BYTE ;M

FIXED DISK TYPE DRIIIE C EXTENSION ;E

FIXEO DISK TYPE DRIVE 0 EXTEN!) ION 10

IBH THROUGH 2DH RESERVED ;

CMOS CHECKSUM HIGH BYTE

CMOS CHECKSUM LOW BYTE

J.

J.

USABLE MEMORY ABOVE I MEG LOW BYTE

USABLE MEMORY ABO liE I MEG HIGH BYTE

DATE CENTURY BYTE (8CD)

C CMOS= INFO! 28 EQU

EQU

033H

034H

128K8 INFORMATION STATUS FLAG BYTE

34H THROUGH 3FH RESERVED C

C

C

C

C

1----------

CMOS DIAGNOSTIC STATU!) ERROR FLAGS WITHIN CMOS DIAG - - - - - - - - - - - - - - - ­

~MO~A~tK-FAIL ~~~ gggg~bgg~ : ~~~~DC~~~~ ~~iL~:~A~~N~N~~I~eTz;~T6~

; MEMORY SIZE NOT EQUAL TO CONFIGURATION C W_MEM_SIZE EQU 00010000B

C BAD CONFIG EQU OOIOOOOOB ; MINIMUM CONFIG USED INSTEAD OF CMOS

C BAD-CKSUM

C BAD:BAT

EQU

EQU

01 OOOOOOB

10000000B

; CHECKSUM ERROR

; DEAD BATTERY CMOS LOST POWER

C

C ; - - - - - - - - - - CMOS I NFORMATI ON FLAGS --------------------------------------------~

C Mb40K EQU 10000000B ; 512K -> 640K OPTION INSTALLED (128K)

FLAG USED BY CMOS SETUP UT I L I TY C

C

C

C

EQU 01 OOOOOOB

;--~-------

C DUAL

C INT FLAG

C DSK-CHG

C DE TERM I NED

C HOME

C SENSE DRV ST

C TRK SLAP -

C QUIEt SEEK

C MAX DRV

C HD 12 SETTLE

DISKETTE EQUATES ----­

EQU

EQU

EQU

EQU

0000000 \ B

10000000B

100000008

0001 OOOOB

EQU

EQU

EQU

EQU

EQU

EQU

000100008

00000 I OOB

030H

OOAH

2

1 S

MASK FOR COMBO/OSP ADAPTER

I NTERRUPT OCCURRENCE FLAG

DISKETTE CHANGE FLAG MASK BIT

SET STATE DETERMINED IN STATE BITS

TRACK 0 MASK

SENSE DR IIIE STATUS COMMAND

CRASH STOP (48 TPI DRIVES)

SEEK TO TRACK 10

MAX NUMBER OF DR I VES

1.2 M HEAD SETTLE TIME

C HD320 SETTLE

C MOTOR:WA I T

C

EQU

EQU

20

37

C ; - - - - - - - - - - DISKETTE ERRORS

C T I ME OUT EQU 080H

C BAD SEEK EQU 040H

C BAD-NEC

C BAD-CRC

C DMA-BOUNDARY

C BAD-DMA

C FMT-CAPA

C DRV-DET

C MED-DET

C DBL-STEP

C RATE MSK

C RATE-500

C RATE-300

EQU

EQU

EQU

EQU

C MEDT A CHANGE EQU

C RECORD NOT FND EQU

C WRITE PROTECT

C BAD ADDR MARK

EQU

EQU

C BAD:CMD EQU

EQU

EQU

EQU

020H

010H

009H

008H

006H

004H

003H

002H

11000000B

OOOOOOOOB

0 I 0000008

320 K HEAD SETTLE TIME

2 SECONDS OF COUNTS FOR MOTOR TURN OFF

ATTACHMENT FAILED TO RESPOND

SEEK OPERATiON FAILED

DISKETTE CONTROLLER HAS FAILED

BAD CRC ON DISKETTE READ

ATTEMPT TO DMA ACROSS 64K BOUNDARY

DMA OVERRUN ON OPERATION

MEDIA REMpllED ON DUAL ATTACH CARD

REQUESTED SECTOR NOT FOUND

WRITE ATTEMPTED ON WRITE PROTECT DISK

ADDRESS MARK NOT FOUND

BAD COMMAND PASSED TO DISKETTE

MASK FOR CLEAR INC ALL BUT RATE

500 KBS DATA RATE

300 KBS DATA RATE

I/O

C

C ; - - - - - - - - - - DISK CHANGE LINE EQUATE!) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ­

C NOCHGLN

C CHGLN

C

EQU

EQU

OOIH

002H

I NO DISK CHANGE LINE AVAILABLE

; DISK CHANGE LlNE AVAILABLE

C i - - - - - - - - - - MED I A/DR I VE STATE I NDI CATORS ------~------~-------------------------

C TRK CAPA EQU 00000001B 80 TRACK CAPABILITY

EQU

EQU

EQU

EQU

OOtH

00000010B

000001008

00010000B

001000008

MULTIPLE FORMAT CAPABILITY 11.2M)

DRIVE DETERMINED

MEDIA DETERMINED BIT

DOUBLE STEP BIT

C RATE-250

C STRT-MSK

C SENO:hlSK

C

EQU

EQU

EQU

10000000B

00001100B

11000000B

250 KBS DATA RATE

OPERATION START RATE MASK

MASK FOR SEND RATE BITS

C 1---------- MEDIA/DRIVE STATE INDICATORS COMPATIBILITY - - - - - - - - - - - - - - - - - - - - - - - - ­

C M3D3U EQU OOOOOOOOB 360 MEDIA/ORIIIE NOT ESTABLISHED

EQU 00000001B 360 MEDIA.I.2DRIVE NOT ESTABLISHED C M301U

C MIDIU

C MED_UNK

EQU

EQU

00000010B

000001 liB

1.2 MEDIA/DRIIIE NOT ESTABLISHED

NONE OF THE ABOVE

TESTl

5-33

5"

5.,

50.

597

5.8

0020

0020

0021

599 OOAO bOO

601

602

.

OOA I

=

0070

0010

603

60.

=

0008

605

I;

0000

606

=

0000

OOCO b07 b08

609 = 0040

610 bll

612

6 "

61.

0080

61'

616 0001

0002

0004

0008

0010

0020

0040

0080

6 "

618 b19 b20 b20 b22

623

62'

625

626

62'

628

629 b30 b31 b32 b33 b3' b35

63b

6 " b38

63'

6'0 b., b'2 b'3 b4.

0081

008F

OOFO

0000

6000

0000

OOOA

0008

000 1 a

100

0101

IBM Personal Computer MACRO Assel'llbter Version 2.00

TESTI - - - 06/10/85 POWER ON SELF TEST (POST)

POSTEQU.INC COMMON EQUATES

1-'

06-10-85

C PAGE

C

C

C

C

C

C

C

C

C i~~--------

INTAOO

INTAOI

I NT800

INT80l

INTERRUPT EOUATES - - - - - - - ­

EQU

EQU

EQU

EQU

EQU

020H

020H

021H

OAOH

OAIH

END OF INTERRUPT COMMAND TO 8259

8259 PORT

8259 PORT

2ND 8259

INT TYPE EQU 070H START OF 8259 INTERRUPT TA8LE LOCATION

INT:V1DEO

~~~~~

EQU OIOH V IDEO VECTOR

----- -----­

~~~

-- -

--~~~~-

---------- -; -

~M~

-

~; ~ ~~~

-

~~~~ ;;~~ -;~;;

-

~~~;~;;

-----­

C

C DMA

C oMA 18

C DMAI

C

EQU

EQU

EQU

OOOH

OoOH

OCOH

; DMA CH. 0 ADDRESS REG I STER PORT ADDRESS

,2ND oMA STATUS PORT ADDRESS

1 2ND OMA CH.O ADDRESS REGISTER ADDRESS

C

C

C ; -­ - - - - --­ MANUFACTUR I NG PORT - - - - - - - ­ - - - - - - - - - - - - - - - - - - - ­ - - - - - - - - - - - - - - - ­

C

C

MFG PORT

-

EQU BaH ; MANUFACTURING AND POST CHECKPOINT PORT

; DMA CHANNEL 0 PAGE REGI STER ADDRESS

C

C

C

C

C

C

; - - - - - - - - - MANUFACTURING BIT DEFiNITION FOR OMFG ERR FL.AG+I - - - - - - - - - - - - - - - - - - - ­

MEM FAIL. EQU 0000000IB ; STORAGE TEST FAIL.EO IERROR 20X)

PRO-FAIL.

U4eS FAIL

KYCLK FAIL

EQU

EQU

EQU

00000010B

OOOOOIOOB

000010008

VIRTUAL MODE TEST FAILED IERROR 104)

LOW MEG CHIP SELECT FAILED tERROR 1091

KEYBOARD CLOCK TEST FAILED (ERROR 3041

C

C

C

C

KV SYS FAIL

KVBD FAIL

DSK FAIL

KEV::FAIL

EQU

EQU

EQU

EQU

OOOIOOOOB

00100000B

010000008

10000000B

KEYBOARD OR SYSTEM FAILED (ERROR 3031

KEYBOARD FAILED (ERROR 3011

DISKETTE TEST FAILED (ERROR 6011

KEYBOARD LOCKED (ERROR 3021

C

C

C

C 08FH

C

C

1----------­--- -------------­

C X287 EQU OFOH

C

EOU

EQU

081H ; STA.RT OF OMA PAGE REG I STERS

; L.AST OMA PAGE REG I STER

; MATH COPROCESSOR CONTROL PORT

C

C

C

C

OOOOOH

08000H

C t - - - - - - - - - - - - - - - - ­ - - - - - - - - - ­ - - - - - ­

C CR

C LF

EQU

EQU

OOOOH

OOOAH

C RVRT

C RHRZ

C H

C X

EQU

EQU

EQU

EQU

000010008

000000018

256

H+I

; POST STACK SEGMENT

; POST STACK POINTER

CARR I AGE RETURN CHARACTER

L.INE FEED CHARACTER

V IDEO VERT I CAL RETRACE BIT

V IDEO HOR I ZONTAL RETRACE BIT

HIGH BYTE FACTOR !X 100H)

HIGH AND LOW BYTE FACTOR IX 10lHI

.LlST

5-34 TESTl

IBM P"rson_1 Computer MACRO Assembler

TEST I - - - -

Version 2.00

06/10/85 POWER ON SELF TEST (POST)

SYSDATA. INC DESCRIPTOR EQUATES

1-8

06-10-85

645

640

641

648

649

650

651

652

653

65.

655

656

651

0300

0800

0088

0008

1000

656 0 4000

659

0

FFFF

660 0

FFFF

661

0

0000

662

663

66.

665 DOAO

666

661

0400

=

DBAO

666 0 0000

669

0

OOOB

610

0

8000

611 0 0008

612

0

0000

613

0

OOOA

614

0

0000

615

616

0

OOOB

0000

611

618

0

OOOF

=

0000

619

0

0000

660

661

662

663

664

665

666

661

00F3

666

669

690

0

0093

691

0

009B

692 00E2

693

0

0081

69'

0

0086

695

0

0081

696

691

0

000 I

696

699

100

10 I

102

103 0000

104 0008

105 0010

106 0018

101 0020

106 002B

109

110

0030

0038

111 0040

112 004B

113 0050

114 005B

115 0060

116 0068

111 0010

" 6 0018

119 0080

120 0088

121

122

123

124

125

126

121

126

0004

0005

129 0006

130 0008

131

0000

0002

132

133

13.

135 0000

136 0002

131 0004

136 0005

139 0006

140 0008

141

142

??

?1

11

"

"

C

C

C

C

C

C

C

PAGE

INCLUDE SYSDATA.INC

1-----­ --------­ - - - ---­ -----------------------------------------------­ - - -----­

;

;

- - - -

1----­

PROTECTED MODE EQUATES FOR POST TESTS AND BIOS ROUTINES ­-

- - - - - - - - - - - - - - - -

-­

-

-

- - -

­--------­--­

- - - - ---

---­--

-

­

-

­

-

­

-

­--­

C SDA LEN

C SYS-IDT LEN e GDT-LEN­ e

DESe LEN e

MCRT-S I ZE e

CCRT-S I ZE e

ECCRT SIZE

C MAX SEG LEN

C NULL SEG_LEN

C

EOU

EOU

EOU

EOU

EOU

EOU

EOU

EQU

EOU

00300H

256-8

TYPE GOT DEF

TYPE DATA DESC

-4-'02-4 -

16-'024

OFFFFH

OFFFFH

OOOOOH

SYSTEM DATA AREA LENGTH

256 SYSTEM lOT ENTRIES, 8 BYTES EACH

GOT STRUCTURE LENGTH

LENGTH OF A DESCR IPTOR

MONOCHROME CRT SIZE

COMPATIBLE COLOR CRT SIZE

SIZE OF EACH PORT I ON OF THE ENHANCED

MAX I MUM SEGMENT LENGTH :: 64K

NULL SEGMENT LENGTH = a

C e

C SYS lOT LOC

C SDA-LOC­ e

GOT-LaC

C MCRTCI LO e

MCRT"-HI

C CCRTCI-LO e

CCRTCI-H I

C ECCRTi LO LO

C e

ECCRTCI-LO-HI

ECCRT.-HI-LO

C

ECCRT.-HI-HI

C CSEG. CO -

C CSEGCI-H I

C NSEG.-LO

C NSEG.:H 1

C

LOCATION EQUATES FOR PROTECTED MODE TESTS

EQU

EOU

EOU

EOU

EOU

EOU

EOU

EOU

EOU

EOU

EOU

EOU

EOU

EOU

EOU

ODOAOH

00-400H

(SYS lOT LaC

OOOOH -

OBH

BOOOH

OBH

OOOOH

O'H

OOOOH

08H

OOOOH

OFH

OOOOH

OOH

I THE SYSTEM lOT IS AT THE BOTTOM

; SAME AS REAL

SYS lOT LEN)

MONOCHROME CRT ADDRESS

10BOOOOH)

COMPATIBLE COLOR CRT ADDRESS

( OB8000H)

(OAOOOOH)

C ; - - - - ­

C

C

C

C

C

DEFINITIONS FOR ACCESS RIGHTS BYTES

C

C

C

C CPLO OAT A ACCESS

C CPLO-CODE- ACCESS

C LOT i5ESC -

C FREE TSS

C INT GATE

TRAP_GATE

EOU

EOU

EOU

EOU

EOU

EOU

EOU

11110011B

100100119

100 110119

111000109

10000001B

100001109

100001118

(OBOOOOH)

CODE SEGMENT POST/BIOS

10FOOOOHI FOR TESTS

ABSO

PRESENT

DPL

=

3

CODE/DATA SEGMENT

NOT EXECUTABLE

GROW-UP (OFFSET <= LIMIT)

WRITABLE

1 ACCESSED

IDPL=O

; CPL 0 NON-CONFORM I NG

VIRTUAL_ENABLE

LENGTH EQUATES FOR PROTECTED MODE TESTS

EOU 0000000000000001B I PROTECTED MODE ENABLE

GDT_DEF

THE GLOBAL DESCRIPTOR TABLE DEFINITION FOR POWER ON SELF TESTS

GOT PTR

SYS-IDT PTR

RSoA PTR

C BWeRT PTR

C-CCRT PTR

E-CCRT-PTR

E-CCRT-PTR2

SYS ROM CS

ES TEMP­

CS-TEMP

SS-TEMP

OS-TEMP

POST TR

POST-TSS PTR

POST-LDTR

POST-LOT PTR

GDT_DEF -

; - - - - ­

DO

DO

DO

DO

DO

DO

DO

STRUC

DO

DO

DO

DO

DO

DO

DO

DO

DO

DO

ENDS

UNUSED ENTRY

THIS ENTRY POINTS TO THIS TABLE

POST INTERRUPT DESCRIPTOR TABLE

THE REAL SYSTEM DATA AREA FOR POST

COMPATI8LE BW CRT FOR POST

COMPA T I BLE COLOR CRT FOR POST

ENHANCED COLOR GRAPH I CS CRT (16 BYTES)

CS POST lOT. ROM RESIDENT

DYNAN' C PO I NTER FOR ES

DYNAMIC POINTER FOR CS

DYNAM I C PO I NTER FOR SS

DYNAMIC POINTER FOR OS

TR VALUE FOR THIS MACHINE'S TSS

LDTR VALUE FOR THIS MACHINE'S LOT

SEGMENT DESCRIPTOR TA8LE ENTRY STRUCTURE

DATA DESC

SEG LIMIT

BASE La WORD

9ASE-H I-BYTE

STRUC

OW

OW

DB

DATA-ACe RIGHTS DB

DATA-RESERVED ow

DATA:DESC ENDS

SEGMENT LIM I T (I 65535 BYTES)

24 BIT SEGMENT PHYS I CAL

ADDRESS 10 (16M-I))

ACCESS RIGHTS BYTE

RESERVED MUST BE 0000 FOR THE 80286

: - - - - ­

.LlST

GATE DESCRIPTOR TABLE ENTRY STRUCTURE

GATE DESC

ENTRY POINT

CS SELECTOR

WORD COUNT

STRUC ow

OW

DB

GATE-ACC RIGHTS DB

GATE-RESERVED OW

GATE::::DESC ENDS

DESTINATION ROUTINE ENTRY POINT

SELECTOR FOR DESTINATION SEGMENT

NUMBER OF WORDS TO COPY FROM STACK

ACCESS RIGHTS BYTE

RESERVED MUST BE 0000 FOR THE 80286

TESTl

5-35

80'

804

80S

80.

807

808

80.

810

8"

812

8"

81'

815 0050

81.

8"

0050 FA

0051 B8 0580

818 0054 E6 70

81. 0056 'E

820 0057 73 27

821 0059 75 25

822 005B 7B 23

823 0050 7. 21

'24 005F

.F

825 0060 B I 05

82. 0062 02 EC

827 0064 73 IA

828 0066 BO 40

82. 0068 DO EO

8'0 006A 71

8"

832 006E 9E 8"

006F

"

76 OF

8'4

8 . . OOT 1 78 00

8., 0073 TA OB

0075 9F

8'8 OOH, 02 EC 8.'

0078 72 o.

840 007A DO E'

8" .4. 007C

007E 74

0080

70 02

03

8'4 0080 F4

845 0081 EB FD

84.

847 0083

848 0083 B8 ---- R

84' 0086 8E 08

850

851

852

8 . . 0088 E4 64

85' 008A A8

O'

855 008C 75 03

85. 008E E9 0123 R

751

744 0000

,..

747 ,..

750

V.l"aion 2.00

06110/85 POWER ON SELF TEST (POST)

,.. IBM P.l"aonel Comput..1" MACRO ASiumblIJI"

TESTI - - - -

PAGE

CODE SEGMENT WORD PUBL I C

PUBL I C C8042

PUBL IC OBF 42

PUBL I e POSTI

PUBL Ie START_'

EXTRN CMOS READ: NEAR

752

75.

EXTRN

EXTRN

EXTRN

CMOS-WR I TE: NEAR

CONFTG BAO:NEAR

754

755

DIIINEAR

DDS;NEAR

DUMMY RETURN; NEAR 75.

757

EXTRN

EXTRN

EXTRN ERR BEEP I NEAR

758 EXTRN

EXTRN

GATE' A20lNEAR

KBD RESET;NEAR

NMI-INT:NEAR

75.

7.,

7.2

EXTRN

EXTRN

EXTRN

EXTRN

POST2rNEAR

PR I NT SCREEN I NEAR

PROC SHUTDOWN; NEAR 7 ••

7.4

1-'

06-10-85

EXTRN

EXTRN

EXTRN

ROM CHECK; NEAR

SHUT2;NEAR 7.5

7 ••

7.7

7.8

SHUT3;NEAR

SHUT4aNEAR EXTRN

EXTRN

EXTRN

SHUT6:NEAR

SHUT7;NEAR 7 ••

770

771

772

77.

774

775

77.

777

778

779 0000

780

781

=

0000

782 0000 36 34 38 30 30 39

POST I

BEGIN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

SHUT'9:NEAR

SLAVE VECTOR TABLE:NEAR

STGTST CNT: NEAR

SYSINITI ;NEAR

VECTOR TABLE I NEAR

VIDEOJ5"ARMS:BYTE

ASSUME CS:CODE,OS: NOTH J NG, ES;NOTHI NG, SS aNOTH I NG

PROC

EQU

DB

NEAR

S

'6480090COPR. IBM CORP. 1981,1985 '

183

784

185

30 43 4F 50 52 2E

20 49 42 40 20 43

4F 52 50 2E 20 31

186

187

78.

39 38 31 2C 3' 39

38 35 20 20

78'

7'0

791

792

793

794

795

796

797

798 35 35

199 004E 20 20

800

42 42 40 40 20 20

31 31 39 39 38 38

801

802

0022 36 36 34 34 38 38

30 30 30 30 39 39

30 31 20 20 43 43

4F 4F 50 50 52 52

2E 2E 20 20 49 49

EVEN

:

I

DB

6 4 8 0 0 '9 0

6 -4 8 0 0 9 I

COP R .

COP R .

'66448800009901 CCOOPPRR..

DB

,----

--- - - - -

------------------------

- - ---------­

I INITIAL RELIABILITY TESTS - IPOSTI)

: ---- - - - - ---------- - ------------------- -- -- - - ---­

:

; COPYR J GHT NOT I CE

; EVEN BOUNDARY

I B M

IBM

1 9 8 5

1 9 8 5

.EVEN MODULE

1000 MODULE

IIB8MM 11998855' ;COPYRIGHT NOTICE

;PAD

;

---- - - - - - ---------

; TEST.OI

--------------------­

I

;

;

I

I

80286 PROCESSOR TEST (REAL MODE)

DESCRIPTION

----

VERIFY FLAGS, REGI STERS

AND CONDITIONAL ,JUMPS.

-------------------

---------------­

ERR02 :

C7A:

ASSUME DSIOATA

START I,

CLI

"OV

OUT

SAHF

JNC

JNZ

JNP

JNS

LAHF

"OV

SHR

JNC

"OV

SHL

JNO

XOR

SAHF

JBE

JS

JP

LAHF

SHR

JC

SHL

JO

JZ

HLT

JMP

MOV

MOV

IN

TEST

JNZ

J"P

CL,5

01 SABLE INTERRUPTS

AX.OD500H+CMOS_REG_D+NMI FLAG MASK IN (AH) AND NNI MASK IN (AL)

CMOS_PORT ,AL 01 SABLE NMI INTERRUPTS

SET "SF~ "IF" "AF" "PF" "CF" FLAGS ON

ERR02

ERR02

ERR02

ERR02

GO TO ERROR ROUTINE IF "CF" NOT SET

GO TO ERROR ROUTINE IF "ZF" NOT SET

GO TO ERROR ROUTINE IF "PF" NOT SET

GO TO ERROR ROUTINE IF "SF" NOT SET

LOAD FLAG IMAGE TO I AH)

LOAD COUNT REGISTER WITH SHIFT COUNT

AH,CL

ERR02

AL,40H

ALII

ERR02

AH,AH

ERR02

SHIFT "AF" INTO CARRY BIT POSITION

GO TO ERROR ROUT I NE I F " AF" NOT SET

SET THE ~OF' FLAG ON

SETUP FOR TESTING

GO TO ERROR ROUT I NE I F " OF" NOT SET

SET (AH)

=

0

CLEAR "SF", "CF", "ZF". AND "PF"

GO TO ERROR ROUT I NE I F " CF" ON

ERR02

ERR02

GO TO ERROR ROUTINE IF ·ZF" ON

GO TO ERROR ROUTINE IF "SF" ON

GO TO ERROR ROUTINE IF "PF" ON

LOAD FLAG I MAGE TO (AH)

AH,CL

ERR02

AH,I

ERR02

CTA

SHIFT "AF" INTO CARRY BIT POSITION

GO TO ERROR ROUT I NE I F ON

CHECK THAT ·OF" IS CLEAR

GO TO ERROR ROUT I NE I F ON

CONT I NUE CONF I DENCE TESTS I F " ZF" SET

ERR02

AX,DATA

DS,AX

;

-----

CHECK FOR PROCESSOR SHUTDOWN

AL,STATUS PORT

AL,SYS_FLAG

C7B

SHUTO

ERROR HALT

ERROR LOOP TRAP

SET DATA SEGMENT

I NTO THE IDS I SEGMENT REG I S TER

READ CURRENT KEYBOARD PROCESSOR STATUS

CHECK FOR SHUTDOWN I N PROCESS FLAG

GO IF YES

ELSE CONTINUE NORMAL POWER ON CODE

5-36 TESTl

1-10

06-10-65

IBM Parsonal COlllputar MACRO Assalllb I ar Vars I on 2.00

TESTI ---06/10/65 POWER ON SELF TEST (POST)

.5.

659 0091

660 0091 80 6F

661 0093 E6 70

662 0095 E8 00

663 0097 E4 71

664 0099 3C 09

665 0098 66 C4

666 0090 74 41

...

•• 9

670 009F 60 FC OA

671

.72

00A2 74 3C

673 00A4 2A CO

674 00A6 E6 FI .7.

.7.

679 00A6 80 II

660 OOAA E6 20

661 OOAC E8 00

662 OOAE 80 06

663 0080 E6 21

664 0082 E8 00

665 0084 80 04

666 0086 E6 21

667 0086 E8 00

666 008A 80 0 I

669 008C E6 21

690 008E E8 00

691 OOCO 80 FF

692 00C2 E6 21

.93

.9•

• 95

696 00C4 80 II

697 00C6 E6 AO

696 00C6 E8 00

699 OOCA 80 70

900 OOCC E6 A I

901 OOCE 80 02

902 0000 E8 00

903 0002 E6 A I

904 0004 E8 00

905 0006 BO 0 I

906 0006 E6 A I

907 OODA EB 00

906 OODC BO FF

909 OODE E6 A I

9"

912

913

91'

915

91.

9"

91.

927

92.

929

930

931

932

933

93.

919

920

921

922

923

92.

925

92.

935

93.

937

93.

939 OOEO

940 OOEO BO 6F

941 00E2 E6 70

942 00E4 90

943 00E5 2A CO

944 00E7 E6 71

945 00E9 66 EO

946 OOEB 3C OA

947 OOED 77 34

946 OOEF BE 0 I 03 R

949 00F2 03 FO

950 00F4 03 FO

951

952

00F6 2E: 6B IC

953

95.

955 00F9 B6 - - - - R

956 OOFC 6E DO

957 OOFE 8C 0400 R

956 0101 FF E3

959

960 0103 0123 R

961 0105 0990 R

962 0107 0000 E

963 0109 0000 E

964 0108 0000 E

965 01000119 R

966 OIOF 0000 E

967 0111 0000 E

966 01 13 0793 R

969 0115 0000 E

970 0117 0 llF R

PAGE

~;~~-CHECK FOR SHUTDOWN 09

NOV

OUT

"NP

IN

CNP

XCHG

"E

AL,CMOS SHUT DOWN+NMI

CMOS PORT,AL­

1+2 -

AL,CMOS DATA

AL,09H -

AL,AH

C7C

CHECK FOR SHUTDOWN OA

CMOS ADDRESS FOR SHUTDOWN BYTE

1/0 DELAY

GET REQUEST NUMBER

WAS IT SHUTDOWN REQUEST 97

SAVE THE SHUTDOWN REQUES T

BYPASS INITIALIZING INTERRUPT CHIPS

CNP

"E

AH,OAH

C7C

WAS I T SHUTDOWN REQUEST A?

BYPASS INITIALIZING INTERRUPT CHIPS

AL,AL

X267+ 1 ,AL

INSURE MATH PROCESSOR RESET SUB

OUT

;

;

- -- -

-

- - - - - - - - - - - - - - -- - - - - -

-

- - - - - - - - - - - - - - - - - - - - - - - - - - --­

RE-INITIALIZE THE 6259 INTERRUPT '1 CONTROLLER CHIP:

NOV

OUT

AL,11H

INTAOO,AL

ICW1 EDGE, MASTER, ICW4

"NP

NOV

OUT

'>2

AL,06H

INTAOI,AL

WAIT STATE FOR 1/0

SETUP ICW2 INTERRUPT TYPE 6H 16-F)

"NP

NOV

'>2

AL,04H

WA I T STATE FOR 1/0

SETUP ICW3 MASTER LEVEL 2

OUT INTAOI,AL

"NP

NOV

OUT

'>2

AL,OIH

INTAOI,AL

1/0 WAIT STATE

SETUP ICW4 MASTER,6066 MODE

"NP

NOV

'>2

AL,OFFH

WA I T STATE FOR 1/0

MASK ALL I NTERRUPTS OFF

OUT INTAOI,AL (VIDEO ROUTINE ENABLES INTERRUPTS)

;--------------------------------------------------------­

; RE-INITIALIZE THE 6259 INTERRUPT .2 CONTROLLER CHIP :

;--------------------------------------------------------­

MDV

OUT

AL,IIH

I NTBOO, AL

ICW1 EDGE, SLAVE ICW4

..JMP

MOV

OUT

MOV

JMP

OUT

..JMP

MOV

OUT

JMP

MOV

1+2

AL, INT TYPE

INTBOl7AL

AL,02H

1+2

INTBOI,AL

1+2

AL,OIH

INTBOI,AL

1+2

AL,OFFH

WAIT STATE FOR 1/0

SETUP ICW2 INTERRUPT TYPE 70 (70-7F)

SETUP ICW3 SLAVE LEVEL 2

1/0 DELAY

SETUP ICW4 6066 MODE, SLAVE

WA I T STATE FOR 1/0

MASK ALL I NTERRUPTS OFF

;

;

;

;

OUT INTBOI,AL --

- - - - - - - - - -

-----------------

- - - - -

-

- - - -

-

-

-

- --- - - - - - - - - - - - --

-

-

--

- --- - - - -

--

- -

-­

SHUTDOWN RESTART

RETURN CONTROL AFTER A SHUTDOWN COMMAND I S ISSUED

DESCRIPTION

;

,

,

,

,

,

;

;

,

,

,

,

A TEST I S MADE FOR THE SYSTEM FLAG BE I NG SET. I F THE SYSTEM FLAG IS

SET, THE SHUTDOWN BYTE ] N CMOS I S USED TO DETERM I NE WHERE CONTROL IS

RETURNED.

CMOS

CMOS

CMOS

CMOS

CMOS

CMOS

CMOS

CMOS

CMOS

CMOS

CMOS

= 0

= A

SOFT RESET OR UNEXPECTED SHUTDOWN

= 1

= 2

SHUT DOWN AFTER MEMORY SIZE

SHUT DOWN AFTER MEMORY TEST

=

3 SHUT DOWN WITH MEMORY ERROR

SHUT DOWN WITH 800T LOADER REQUEST = 4

= 5 ..JMP OWORO REQUEST (INTERRUPT CHIPS & 267 ARE INITIALIZED)

=

6 PROTECTED MODE TEST3 PASSED

= 7 PROTECTED MODE TEST3 FAILED

=

6 PROTECTED MODE TESTI FA ILED

= 9 BLOCK MOVE SHUTDOWN REQUEST

..JMP OWORO REQUEST (W/O INTERRUPT CHIPS INITIALIZED)

NOTES: RETURNS ARE MADE WITH INTERRUPTS AND NMI DISABLED.

USER MUST RESTORE SS:SP (POST DEFAULT SET = 0000:0400),

ENABLE NON-MASKABLE INTERRUPTS (NM I) WITH AN OUT TO

PORT 70H WITH HIGH ORDER BIT OFF, AND THEN I SSUE A

ST I TO ENABLE INTERRUPTS. FOR SHUTDOWN (5) THE USER

I MUST ALSO RESTORE THE INTERRUPT MASK REGISTERS.

;------------------------------------------------------------------------------­

CHECK FROM WHERE

NOV

NOV

NOV

"NP

BRANCH: OW

Ow

Ow

Ow

Ow

Ow

Ow

Ow

Ow

Ow

Ow

NOV

OUT

Nap

SUB

OUT

XCHG

CNP

"A

NOV

AOO

AOO

NOV

AL, CMOS SHUT OOWN+NM I

CMOS_PORT,AL­

AL.AL

;~~~CDATA,AL

AL,OAH

SHUTO

S I .OFFSET 8RANCH

SI.AX

SI,AX

BX,CS: [SI]

SET TEMPORARY STACK FOR POST

AX.ABSO

SS,AX

SP, OFFSET CIITOS

BX

SHUTO

SHUTI

SHUT2

SHUT3

SHUT4

SHUT5

SHUT6

SHUT7

SHUT6

SHUT9

SHUTA

CLEAR CMOS BYTE

1/0 DELAY

SET BYTE TO 0

COMPARE WITH MAXIMUM TABLE ENTRIES

SKIP TO POST IF GREATER THAN MAXIMUM

POINT TO THE START OF THE BRANCH TABLE

POINT TO BRANCH ADDRESS

MOVE BRANCH TO ADDRESS TO BX REG I STER

I SET STACK SEGMENT TO ABSO SEGMENT

SET STACK POINTER TO END OF VECTORS

JUMP BACK TO RETURN ROUTI NE

NORMAL POWER UPIUNEXPECTED SHUTDOWN

SHUT DOWN AFTER MEMORY SIZE

SHUT DOWN AFTER MEMORY TEST

SHUT DOWN WITH MEMORY ERROR

SHUT DOWN WITH BOOT LOADER REQUEST

JMP DWORD REQUEST WTTH I NTERRUPT I NIT

PROTECTED MODE TEST7 PASSED

PROTECTED MODE TEST7 FA] LED

PROTECTED MODE TESTI FAILED

BLOCK MOVE SHUTDOWN REQUEST

JMP DWORD REQUEST (W/O INTERRUPT INIT)

TEST1 5-37

IBM Personal Co",puter MACRO A •• e",ble,. Version 2.00

TESTI - - - 06/10/85 POWER ON SELF TEST (POST)

.11

.,3

914 0119

915 0119 E4 60

916 0118 80 20

911 OliO E6 20

916 OIIF

91901lFFF2E0061R

.BO

'BI

.B2

'B3

9S4 0123

9S5 0123 80 01

9S6 0125 E6 SO

.Bl

'BB

'B'

990 0121 8S FFFF

991 012A F9

992 0128 13 21

993 012D

994 0120 8E DS

995 012F 8C 08

996 0131 8E C3

991 0133 8C CI

99S 0135 SE 01

999 0131 SC 02

1000013988 E2

1001 013B 8B EC

1002013088 F5

1003 013F S8 FE

10040141 1301

1005014333 C1

1006 0145 15 01

1001 0141 F8

100S 0148 EB E3

1009 014A

1010 014A OB C1 lOll 014C 14 01

1012 014E

1013 014E F4

1014

1015

1016 014F

1011 014F 8S S8BB lOIS 0152 E6 10

1019 015490

1020 0155 E4 11

1021 0151 24 01

1022 0159 86 C4

1023 015B E6 10

1024 0150 S6 C4

1025 015F E6 11

1026

1021 0161 BO 8C

102S 0163 90

1029 0164 E6 10

1030 0166 90

1031 0161 E4 11

1032

1033

1034

1035 0169 BO 00

1036 016B BA 0308

1031 Ol6E EE

103S 016F FE CO

10390111 B2 as

10400113 EE

1041 011482 8A

10420116 EC

10430111 B2 DA

10440119 EC

1045 011A 80 00

1046 011C B2 CO

1041 011E EE

1048 0 11F 80 FC

1049 OISI E6 61

1050

1051

1052

1053

1054

1055

1056

1051

1058

1059

1060

1061

1062 0 I S3 80 02

1063 0lS5 E6 80

1064

106~

1066 0181 SC C8

1061 0lS9 8E DO

106S 018B 8E OS

1069 018033 F6

1010 OISF 33 DB

1011 0191 B5 80

1012 0193

1013 0193 AD

1014 0194 02 DC

1015 0196 02 OS

1016 019S E2 F9

1011 019A 13 02

1018

1019 019C 14 01

10SO Ol9E

10SI OI9E F4

IOS2

1083

1084

I - I I

06-10-65

PAGE

; - - - - -

SHUT~I eIO_ROM_INIT MUST BE INITIALIZED BY THE USER FOR VECTORED REQUESTS

IN

NOV

OUT

AL,PORT A

AL,EOI -

INTAOO,AL

; FLUSH THE KEYBOARD BUFFER

; FLUSH LAST T I MER REQUEST I F PEND I NG

TO ALLOW TIMER INTERRUPTS

SHUTA;

"NP DWORD PTR OlD_ROM IN IT FAR JUMP TO USER DEF I NED LOCAT I ON

AFTER SHUTDOWN TO REAL MODE CODE

WITH INTERRUPT 5 AND NM I 0 I SABLED

1----CHECKPOINT 01

SHUTO:

NOV

OUl

AL.OIH

MFG_PORT

I

AL

<> <> <> <> <><><> <> <> <><><>

<> <> CHECKPO I NT 0 I <> <>

READ/WRITE/TEST THE 802S6 REGISTERS WITH ONE'S AND ZERO'S

C8: co,

ERROl;

NOV

STC

"NC

NOV

NOV

NOV

NOV

NOV

NOV

NOV

NOV

NOV

NOV

"NC

XOR

""Z

CLC

"NP

OR

"Z

"-T

AX ,OFFFFH

ERROl

DS.AX

BX.DS

ES.8X

CX.ES

SS.CX

DX.SS

SP,DX

BP,SP

SI,BP

DI,SI

C.

AX,DI

ERROl

CB

AX,DI

CIOA

SETUP ONE'S PATTERN IN lAX)

SET CARRY FLAG

GO I F NO CARRY

; WRITE PATTERN TO ALL REGISTERS

; PATTERN MAKE IT THROUGH ALL REGISTERS

; NO GO TO ERROR ROUT I NE

; CLEAR CARRY FLAG

TSTIA

ZERO PATTERN MAKE I T THROUGH ?

YES GO TO NEXT TEST

; HALT SYSTEM

; - - - - -

CIOA;

I NSURE THAT CMOS CLOCK INTERRUPT S ARE 0 I SABLED

NOV

OUT

NOP

IN

AND

XCHG

OUl

XCHG

OUT

AX,X· (CMOS REG B+NMI)

CMOS_PORT, AL

AL,CMOS DATA

AL,OOOOOIIIB

AL,AH

~~~!RPORT

, AL

CMOS_DATA, AL

-

NOV

NOP

OUT

NOP

IN

AL,CMOS_REG_C+NMI

CMOS_PORT, AL

AL,CMOS_DATA

; - - - - RESET VIDEO

ADDRESS TO BOTH (AH) AND (AL)

ADORES5 CMOS ALARM BYTE WITH NM I =OFF

I/O DELAY

GET THE CURRENT CONTROL REG I STER

CLEAR SET,PIE,AIE, AND SQWE BITS

SAVE IT

ADDRESS CMOS FLAGS BYTE WITH NMI=OFF

I/O DELAY

I/O DELAY

READ STATUS TO CLEAR PENDING INTERRUPT

NOV

NOV

OUT

INC

NOV

OUT

NOV

IN

NOV

IN

NOV

NOV

OUT

NOV

OUT

AL,O

OX,03DSH

DX,AL

AL

DL,OaSH aX,AL aL,OBAH

AL,DX

DL,ODAH

AL,DX

AL,O

DL,OCOH

DX,AL

AL,IIIIIIOOB

PORT_B,AL

I - ------- - ------- - - -- - -- - - - - - - - - - - - - - - - -­

I TEST .02 i ROM CHECKSUM TEST I

; DESCRIPTION

:

:

A CHECKSUM I S DONE FOR THE 32K :

;

;

READ ONLY MEMORY MODULES (TWO)

--

-------------

- - - - - - - - -

----

- - - - - - - -- -

-­

:

CONTAINING POST, BASIC AND BIOS.:

CHECKPO I NT 02

CLEAR DATA BYTE TO DISABLE VIOEO

GET COLOR MODE CONTROL PORT AODRESS

DISABLE COLOR VIDEO

MONOCHROME MODE RESET MASK

GET ADDRESS OF MONOCHROME MODE CONTROL

OISABLE a/.

VIDEO, ENABLE HIGH RES

ADDRESS OF MONOCHROME STATUS REGI STER

READ STATUS TO DISABLE EGA VIDEO

ADDRESS OF COLOR MODE STATUS REGISTER

READ STATUS TO DISABLE EGA VIDEO

I

SELECT ATTRIBUTE PALETTE REGISTER 0

WRITE 0 TO ATTRIBUTE ADDRESS REGISTER

; TO DISABLE EGA VIDEO

; DISABLE PARITY CHECKERS

NOV

OUT

AL,02H

MFG_PORT, AL

<> <> <> <> <> <> <> <> <><> <><>

<><> CHECKPOINT 02 <><>

ASSUME SS;CODE

NOV AX,CS

NOV

NOV

XOR

XOR

NOV

SS ,AX as,AX

51,SI aX,BX

CH.080H

I SETUP 5S SEGMENT REG I STER

SET UP DATA SEGMENT TO PO I NT TO

RON ADDRESS START

CLEAR CHECK REG I STER

COUNT FDR 32K WORDS

CII:

LODSW

ADD

AOD

LOOP

"NC

BL.AH

BL,AL

CII

CIIE

MOVE TWO BYTES INTO AX 51=51+2

ADD 000 BYTE AT 05:51+1 TO CHECKSUM

ADD EVEN BYTE AT 05:51 TO CHECKSUM

LOOP COUNT FOR 65K BYTES (32K WORDS)

EXIT IF "LOOP" RESET THE CARRY FLAG

INOTE: MODEL BYTE MUST NOT ZERO)

CONT INUE IF CHECKSUM VALID (ZERO)

"Z

CIIA

CI lEI

HLT

I-~~----------------------------------

I TEST .03

I VER IFY CMOS SHUTDOWN BYTE

; ELSE HALT IF CHECKSUM PROBLEM

---

;

,,-.....,

5-38 TESTl

IBM Personal Computer MACRO

TESTI - - - 06/10/85 POWER ON

Ass.mbLer lIerSion 2.00

SELF TEST {POSTI

1085

1086

1087

1088

1089

1090

1091 019F

1092 a 19F 80 03

1093 alAI

1094

E6 80

1095 01A3 89 0009

1096 01A6 84 01

1097 01A8

1098 01A8 80 8F

1099 01AA E6 70

1100 01AC 8A C4

1101 01AE E6 71

1I0201BOB08F

1103 01B2 90

1104 0lB3 E6 70

1105 0lB5 90

11060186 E4 71

1107 0lB8 3A C4

11080lBA7592

1109 018C DO 04

1110 018E E2 E8

11I1

112

"'

II.

117

118

119

120 OICO B8 - - - - R

121 0le3 8E 08

122 0lC5 BO 04

123 alC7 E6 80

1124

1125

1126

1127 alC9 E6 08

1128 OICB E6 DO

,129

1130

1131

1132 OICD 88 16 0072 R

1133 0101 BO 54

1134 0103 E6 43

1135 0105 E8 00

1136 0107 8A Cl

1137 0109 E6 41

1138 OIDB 87 05

1139 0100

1140 0100 BO 40

1141 OIOF E8 00

11420lEIE643

'143 01E3 80 FB FF

1144 0lE6 74 OB

1145 0lE8 E4 41

1146 OlEA OA 08

1147 alEC E2 EF

1148 alEE FE CF

1149 OtFO 75 E8

1150 0 I F2 F4

1151

1152

1153

1154

1155

1156

1157

1158

1159

1160

1161

1162 0lF3 BO 05

1163 0lF5 E6 80

1164

1165 01F7 8A C3

1166 0lF9 2B C9

1167 alFS E6 41

11680lFDB705

1169 OIFF

1170 OIFF 80 40

I I 71 0201 E6 43

1172 0203 E8 00

1173 0205 EB 00

11740207 E4 41

1175 0209 22 08

1176 020B 74 07

1 177 0200 E2 Fa

1178 020F FE CF

1179 021175 EC

1180 0213 F4

'81

182

'8'

18'

18'

18.

187

188

189

190

191

192

19'

19.

195 0214

196 0214 B8 - - - - R

197 0217 8E 08

1980219 BO 06

1-12

06-10-85

; DESCRIPTION

1 ROLLI NG BIT WR I TTEN AND

;

;

- -

IIER I FlED AT SHUTDOWN ADDRESS. ---

-

---

- - - - -

-----

-

-

- - - -- - ---

-----

- -

-

-­

IIER I FY AND CLEAR SHUTOOWN FLAG

"OV

OUT

AL,03H

MFG_PORT, AL

-<>-<>-<> -<> -<><><> -<>-<> -<><>-<>

0<>

CHECKPOINT 03 <><>

"OV

"OV

CX,09H

AH,I

CIIBI

"OV

OUT

"OV

OUT

"OV

NOP

OUT

NOP

IN

C"P

JNZ

RCL

LOOP

AL, CMOS SHUT OOWN+NM I

CMOS_PORT .AL­

AL.AH

CMOS_OATA,AL

AL. CMOS_SHUT _DOWN+NM I

CMOS _PORT. AL

AL,CMOS_DATA

AL,AH

ERRO I

AH,'

CIIB

;

-

- -----------------------------

I TEST.04

- -

-----­

I

; 8254 CHECK TIMER I ALL BITS ON :

; DESCRIPTION ,

, SET T I MER COUNT

I CHECK THAT TIMER 1 ALL 81TS ON :

1---------- --- ------------ - - ------------­

I

ASSUME DS:DATA

MOil AX,DATA

MOil

MOil

OUT

DS.AX

AL,04H

MFG_PORT .AL

LOOP COUNT

START WITH BIT 0

OUTPUT ROLL I NG B [T

READ CMOS

110 DELAY

110 DELAY

MUST BE THE SAME

ERROR IF NOT

ROLL A BIT THROUGH SHUTDOWN BYTE

LOOP TILL DONE

SET DATA SEGMENT

<> <><><><><><><><> <><> <>

<><>

CHECKPOINT 04

<><> o

I SABLE DMA CONTROLLER

OUT

OUT

DMA08,AL

DMAI8.AL

{ALI ALREADY

=

04H o

I SABLE OMA CONTROLLER I o

I SABLE DMA CONTROLLER 2

; - - - - - IIERIFY THAT TIMER! FUNCTIONS OK

MOil

MOV

OUT

.JMP

MOil

OUT

MOil ox.

GIIRESET FLAG

AL.54H­

T [MER+3. AL

1+2

AL.CL

T[MER+[ .AL

BH,05H

SAllE RESET FLAG WHI LE REFRESH I S OFF

SELECT T I MER I, LSB, MODE 2

I/O DELAY

SET INITIAL TIMER COUNT TO 0

C12;

MOV

JMP

OUT

CMP

JE

IN

OR

LOOP

DEC

JNZ

HLT

AL,40H

1+2

TlMER+3,AL

BL.OFFH

CI3

AL,TIMER+[

8L.AL

Cl2

BH

CI2

LOOP COUNT

TIMER 1 81TS ON

LATCH TIMER-l COUNT

110 DELAY

YES SEE IF ALL 81TS GO OFF

TIMERI BITS OFF

READ TTMER T COUNT

ALL BITS ON IN TIMER

TlMERI_8ITS_ON

I

;

-- -

--

- --- - - - -

--------

- -

---

- - -- -- - - --

---­

I TEST.05

8254 CHECK TIMER 1 ALL BIT OFF

:

1

I DESCRIPTION

I

I

: -

SET T I MER COUNT :

CHECK THAT TIMER 1 ALL BITS OFF:

-

- -

------- - - -

-------------------

-

--

- -

-­

TRY AGAIN

TIMER I FAILURE, HALT SYSTEM

TIMERI_BITS_OFF

;-----

CHECK PO I NT 05

C13; MDV

DUT

AL,05H

MFG_PORT ,AL

<><><> <><> <> <><><><><><>

<><> CHECKPO I NT 05 <><>

SET TIMER I COUNT MDV

SUB

OUT

MOV

AL,BL cX,ex

TIMER+I.AL

BH,05H

C14:

"OV

OUT

J""

J"P

IN

AND

JZ

LOOP

OEC

JNZ

HLT

AL,40H

TlMER+3.AL

'.2

1·2

AL,TIMER+t

BL,AL

CI'

CI'

BH

CI'

;

--------------------------------- ------­

; TE5T.06

8237 DMA 0 INITIALIZATION

CHANNEL REG I STER TEST

DESCRIPTION I

DISABLE THE 8237 OMA CONTROLLER.:

WRITE/READ THE CURRENT ADDRESS :

AND WORO COUNT REG I STERS FOR

;

ALL CHANNELS. ---------------

- -

----------------------­

SET TRY AGA I N COll\lT

TIMER LOOP

LATCH-T I MER I COUNT

DELAY FOR TIMER

ADDED DELAY FOR T I MER

READ TIMER I COUNT

GO TO WRAP DMA REG I STER TESTS

TIMER_LOOP

HALT SYSTEM

; - - - - CHECKPOINT 06

CIS:

MOil

MOil

MOV

AX,DATA

DS,AX

AL,06H

SET DATA SEGMENT

TESTl

5-39

IBM Personal Computer MACRO Assembler Version 2.00

TESTI - - - 06/10/65 POWER ON SELF TEST (POST)

1199 0218 E6 80

1200 021089 160012 R

1201 0221 E6 00

1202

1203

1204

1205 0223 eO FF

1206 0225 8A 08

1201 0221 6A F6

1208 0229 B9 0008

1209 022C BA 0000

1210 022F EE

121 I 0230 EB 00

12120232 EE

12130233 BO 01

1214 0235 EB 00

1215 0231 EC

1216 0238 EB 00

1217 023A 8A EO

1218 023C EC

1219 0230 38 D6

1220 023F 14 01

\221 0241 F4

1222 0242

1223 0242 42

1224 0243 E2 EA

1225 0245 FE CO

1226 0241 14 DC

1221

1226

1229

1230 0249 60 FB 55

1231 024C 14 09

1232 024E 80 FB AA

1233 0251 14 08

'234 0253 BO 55

1235 0255 EB CE

1236

1231

1236

1239 0251 BO AA

1240 0259 EB CA

1241

1242

1243

1244

1245

1246

1241

1246

1249

1250

1251

1252

1253

1254

1255 0258 BO 01

1256 0250 E6 60

1251 025F E6 DA

1258

1259

1200

1201 0201 eo FF

1202 0263 6A D8

1263 0265 8A F6

1264 0261 89 0008

1265 026A SA ooco

, 266 0260 EE

'267 026E E8 00

1268 0210 EE

1269 0211 BO 01

1210 0273 E8 00

1211 0215 EC

1272 0216 EB 00

1213 0218 6A EO

1214 027A EC

1275 021B 38 08

1276 0210 74 01

1277 021F F4

1276 0260

1279 0280 83 C2 02

1280 0283 E2 E6

1281 0285 FE CO

1282 0287 14 DA

1283

1284

1285

'286 0289 80 FB 55

1287 028C 14 09

1266 026E 80 Fe AA

1289 0291 74 06

1290 0293 80 55

1291 0295 Ee CC

1292

1293

1294

1295 0291 eo AA

1296 0299 Ee ca

1297

1298

1299

1300 0298

1301 02ge 88 IE 0072 R

1302 029F A3 0010 R

1303 02A2 80 12

1304 02A4 E6 41

1305

1306

1307

1306 02Ao 2A co

'309 02A8 E6 06

310

1311

1312 02AA E6 DO

1-13

06- I 0-85

C16:

C17:

CI6;

OUT

MOV

OUT

MFG PORT ,AL tlRESET FLAG, DX

DMA+OOH,AL

; <><> CHECKPOINT 06 <><>

I RESTORE SOFT RESET FLAG

; SEND MASTER CLEAR TO DMA

WRAP DMA a

CHANNEL ADDRESS AND COUNT REG I STERS

MOV

MOV

MOV

MOV

MOV

OUT

JM"

OUT

MOV

JM"

IN

JM"

MOV

IN

CM"

JE

HLT

INC

LOOP

INC

JZ

AL,OFFH

8L,AL

8H,AL

CX,6

OX ,DMA

DX,AL

"2

DX,AL

AL,O IH '.2

AL,DX '.2

AH,AL

AL,DX eX.AX

CI'

OX

CI1

AL

CIb

WRITE PATTERN "FF" TO ALL REGISTERS

SAVE PATTERN FOR COMPARE

SETUP LOOP COUNT

SETUP 110 PORT ADDRESS OF REG I STER

WRITE PATTERN TO REGISTER, LSB

I/O DELAY

MSS OF 16 81T REGISTER

AL TO ANOTHER PATTERN 8EFORE READ

I/O DELAY

READ 16-BIT DMA CH REG, LSB 2ST DMA

110 DELAY

SAVE LS8 OF 16-81T REGISTER

READ hlSB OF DMA CHANNEL REG I STER

PATTERN READ AS WR 1TTEN?

YES CHECK NEXT REGISTER

NO HALT THE SYSTEM

NXT DMA CH

SET-I/O-PORT TO NEXT CHANNEL REGISTER

WRITE PATTERN TO NEXT REGISTER

SET PATTERN TO 0

YES CONTI NUE

; - - - - WRITE DMA WITH 55 PATTERN

CM"

JZ

CM"

JZ

MOV

JMP

8L,055H

C19

BL,OAAH

C20

AL,055H

CI.

WRITE DMA WITH AA PATTERN

CHECK IF K55 w PATTERN DONE

GO IF YES

CHECK IF "AA" PATTERN DONE

GO IF YES

C19: MOV

JMP

AL,OAAH

CI. i

-;~~;:~;-----

­ -------- ------ --- ---------

:

;

8237 DMA 1 INITIALIZATION

CHANNEL REGISTER TEST

OESCR IPTION

DISABLE 8237 OMA CONTROLLER 1.

WR I TEl READ THE CURRENT DMA I

ADDRESS AND WORD COUNT

I REG I STERS FOR ALL CHANNELS. ,-------------

-

- ----- -- - -----

-- --------­

CHECKPOINT 07 DMA I

C20, MOV

OUT

OUT

AL,07H hlFG PORT ,AL

DMAT+ODH·2,AL

<><><><><> <> <> <> <><><><>

<><> CHECKPOINT 07 <><>

SEND MASTER CLEAR TO 2ND DMA

CI6A:

CI7A:

C1BA:

1-----

: - - - - -

C20A:

WRAP DMA I CHANNEL ADDRESS AND COUNT REG I STERS

MOV

MOV

MOV

MOV

MOV

OUT

JM"

OUT

MOV

JMP

IN

JMP

MOV

IN

CM"

JE

HL T

AOD

LOOP

INC

JZ

AL.OFFH

8L,AL

BH,AL

CX,8

OX,DMAI

OX,AL '.2

DX,AL

AL,OIH

"2

AL,DX

'.2

AH,AL

AL,DX eX.AX

C16A

DX,2

CI7A

AL

CI6A

WRITE PATTERN FF TO ALL REGISTERS

SAVE PATTERN FOR COMPARE

SETUP LOOP COUNT

SETUP I/O PORT ADDRESS OF REG I STER

WRITE PATTERN TO REGISTER, LSB

[10 DELAY

MSB OF 16 81T REGISTER

AL TO ANOTHER PAT BEFORE RD

1/0 DELAY

READ 16-81T DMA CH REG, LS8 2ST DMA

I/o DELAY

SAVE LSB OF 16-81T REGISTER

READ MSB OF OMA CH REG I STER

PATTERN READ AS WR I TTEN?

YES CHECK NEXT REG I STER

NO HALT THE SYSTEM

NXT DMA CH

SET-IIO-PORT TO NEXT CHANNEL REG I STER

WRITE PATTERN TO NEXT REGISTER

SET PATTERN TO 0

YES CONT I NUE

WRITE DMA WITH 55 PATTERN

CM"

JZ

CM"

JZ

MOV

JM"

BL,55H

C20A

BL,OAAH

C21

AL.55H

CI6A

WRITE OMA WITH AA PATTERN

MOV

JMP

AL,OAAH

C16A

INITIALIZE AND START MEMORY REFRESH

CHECK !

F 55 FA TTERN DONE

GO IF YES

CHECK IF AA PATTERN DONE

GO IF YES

C2l;

MOV

MOV

MOV

OUT

8X.(IIRESET FLAG

_EQUIP FLAG,AX

AL,I6 -

TIMER+l,AL

SET DMA COMMAND

SUB

OUT

AL,AL

OMA+B,AL

GET THE RESET FLAG

DO A DUMMY MEMORY WR I TE 8EFORE REFRESH

START REFRESH TIMER

DACK SENSE LOW,OREQ SENSE HIGH

LATE WRITE, FIXED PRIORITY, NORMAL

TIM I NG, CONTROLLER ENABLE. CHO ADDRESS

HOLD DISABLE, MEMORY TO MEMORY DISABLE

SAME TO SECOND CONTROLLER OUT DMA18,AL

5-40 TEST!

IBM Per50nai COlllputer MACRO A55embler V.r5ion 2.00

TESTI ---06/10/85 POWER ON SELF TEST (POST)

1360 02ED EC

1361 02EE 31. C4

1362 02FO 75 30

1363 02F2 FE CC

1364 02F4 41.

1365 02F5 81 FA 0080

1366 02F9 75 Fa

1361 02FB FE C4

1368 02FD 81. C4

1369 02FF E2 DB

1370

137 I

1372

1313 0301 BO CC

1374 0303 BA 008F

1375 0306 81. EO

1316 0308 EE

1317

1378

1319

1380 0309 21. CO

1381 030B EC

1382 030C 31. C4

1383 030E 75 12

1384 0310 80 FC CC

1385 0313 75 04

1386 0315 BO 33

1387 0317 E8 EA

1388 0319

1389 0319 80 FC 00

1390 031C 14 05

1391 031E 21. CO

1392 0320 E8 E 1

1393

1394

1395 0322

1396 0322 F4

1397

1398

1399

1400

1401

1402

1403

1404

1405

1406 0323

1407 0323 80 09

1408 0325 E6 80

1409 0327 28 C9

1410 0329

141 1 0329 E4 61

141203281.8 10

1413 0320 EI FA

1414 032F E3 F1

14150331

14160331 E4 61

141703331.8 10

1418 0335 EO FA

1419 0331 E3 E9

1420

1421

1422

1423

1424

1425

1426

1313

1314

1315

1316 02AC 80 40

1317 02AE E6 OB

1318 02BO 80 CO

1319 02B2 E6 06

1320 0284 EB 00

1321 0286 BO 41

1322 02B8 E6 OB

1323 0281. E6 06

1324 02BC EB 00

1325 02BE 80 42

1326 02CO E6 OB

1327 02C2 E6 06

1328 02C4 EB 00

1329 02C6 BO 43

1330 02C8 E6 OB

1331 02CA E6 06

1332

1333

1334

1335 02CC 89 IE 0012 R

1336

1331

1338

1339

1340

1341

1342

1343

1344

1345

1346 0200 80 08

1341 0202 E6 80

1348 0204 21. CO

1349 0206 BA 0081

1350 0209 89 OOFF

1351 020C EE

1352 0200 42

1353 020E FE CO

1354 02EO 8 t FA 008F

1355 02E4 15 F6

1356 02E6 86 EO

1351 02E8 FE CC

1358 02EA 41.

1359 02E8 21. CO

1-14

06-10-85

MODE SET ALL DMA CHANNELS

NOV

OUT

MOV

OUT

"MP

MOV

OUT

OUT

""P

NOV

OUT

OUT

J"P

NOV

OUT

OUT

AL,40H

DMA+OBH,AL

AL, OCOH

DMA 18+06H,AL

"2

AL,41H

DMA+OBHIAL

DMA 18+06H. AL

'+2

AL,4ZH

OMA+08H,AL

DMAI.a+06H,AL

'+2

AL.43H

DMA+08H,AL

OMA 18+06H,AL

RESTORE RESET FLAG

; SET MODE FOR CHANNEL 0

SET CASCADE MODE ON CHANNEL 4

[10 DELAY

SET MODE FOR CHANNEL I

SET MODE FOR CHANNEL 5

I/O DELAY

SET MODE FOR CHANNEL 2

SET MODE FOR CHANNEL 6

I/O DELAY

SET MODE FOR CHANNEL 3

SET MODE FOR CHANNEL 7

MDV IIIRESET_FLAG,BX

;

-~~~~ ~~;

---

--- - -

--------------------

- -­

1 OMA PAGE REG

; DESCRIPTION

I STER TEST

;

;---

WRITE/READ ALL pAGE REGISTERS

- - - - - - - -

---

- - - - - ----

---

- -

---------

- -­

; - - - - CHECKPOINT 08

C22AI

C22B:

; - - - - -

C22:

C25:

MOV

OU:r

SUB

MOV

MOV

OUT

INC

INC eMP

"NZ

XCHG

DEC

DEC

SUB

IN

CMP

"NZ

DEC

DEC

CMP

"NZ

INC

MOV

LOOP

AL,08H

MFG_PORT, AL

AL,AL

OX , DMA_PAGE

CX,OFFH

DX,AL

OX

AL

DX.8FH

C22A

AH,AL

AH

OX

AL,AL

AL,DX

ALlAH

C26

AH

OX ox ,MFG_PORT

C22B

AH

AL,AH

C22A

'<>'<>'<><>'<>'<> <>'<> <> <> <> <>

'<><> CHECKPO J NT 08 <><>

DO ALL DATA PATTERNS

I TEST DMA PAGES 81 THROUGH 8EH

SAVE CURRENT DATA PATTERN

CHECK LAST WR I TTEN

CHANGE OAT A BEFORE READ

DATA AS WRITTEN?

GO ERROR HALT IF NOT

CaNT I NUE TILL PORT 80

I

NEXT PATTERN TO RIPPLE

TEST LAST DMA PAGE REGISTER (USED FOR ADDRESS LINES DURING REFRESH)

WRITE AN CC TO PAGE REGISTERS MOV

NOV

NOV

OUT

AL,OCCH

DX,LAST_DMA_PAGE

AH,AL

DX,AL

SAVE THE DATA PATTERN

OUTPUT PAGE REG [STER

SUB

IN

CMP

"NZ

CMP

"NZ

MDV

"MP

CMP

"Z

SUB

"MP

VER I FY PAGE REG I STER 8F

AL,AL

AL,DX

AL,AH

C26

AH,OCCH

C25

AL.033H

C22

AH,O

C21

AL,AL

C22

CHANGE DATA PATTERN BEFORE READ

GET THE DATA FROM PAGE REGISTER

CO IF ERROR

CO IF ERROR

SET UP DATA PATTERN OF 33

DO DATA 33

CHECK DONE

GO IF YES

SET UP FoR DATA PATTERN 00

DO DATA 0

ERROR HALT

(;26:

HLT i

-;~~~~~;--------------------

------- -----

I

; STORAGE REFRESH TEST

; DESCRIPTION

;

;

VER I FY REFRESH IS OCCURR I NG --

- - - - --------------------------------­

HALT SYSTEM

CHECKPOINT 09 TEST MEMORY REFRESH

MOV

OUT

SUB

AL,09H

MFG PORT ,AL cX,ex

<>'<> <><><><><><><><><><>

<><> CHECKPOINT 09 <><>

C28:

C29:

IN

TEST

LOOPZ

JCXZ

AL..PORT_B

AL,REFRESH_BIT

C28

C26

IN

TEST

AL,PORT B

AL, REFRESH_B I T

LOOPNZ C29

JCXZ C26

INSURE REFRESH BIT IS TOGGLING

1 NSURE REFRESH I S. OFF

ERROR HALT 1 F TIMEOUT

I NSURE REFRESH I S ON

ERROR HALT I F NO REFRESH BIT

TEST.IO

8042 INTERFACE TEST

READ CONFIGURATION JUMPERS

DESCR I PT I ON

ISSUE A SELF TEST TO THE 8042.

TEST1 5-41

IBM Per'Ol"1al Computer MACRO Assembler

TESTI ---­ 06/10/85

Ve,..."ol"1 2.00

POWER ON SELF TEST (POST)

1421

1428

1429

1430

1431

1432

1433

1434 0339 BO OA

1435 0338 E6 80

1436

1431

1438

1439 0330 2B C9

1440 033F E4 64

1441 0341 8A EO

1442 0343 F6 C4 01

1443 0346 14 02

1444 0348 E4 60

1445 034A F6 C4 02

1446 0340 EO FO

1441 034F 14 01

1448

1449 0351 F4

1450

1451

1452

1453 0352 BO OB

1454 0354 E6 80

1455

! 456 0356 BO AA

\ 451 0358 BC 03EE R

1458 0359 E9 39

1459 0350 A8 a

I

1460 035F 14 02

1461 0361 E4 60

1462 0363 BC 03FO R

1463 0366 EB 3A

1464 0368 E4 60

1465 036A 3C 55

1466

1461 036C 80 OC

1468 036E E6 80

1469

1410 0310 15 OF

1411

1412

1413

1414 0312 90 CO

1415 0314 8C 03F4 R

1416 0311 EB 10

1411 0319 BC 03F6 R

1418 031C EB 24

1419 031E E4 60

1480 0380 E6 82

1481

1482

1483

1484 0382 BO 60

1485 0384 BC 03F2 R

1486 0381 EB 00

1481 0389 14 05

1488

1489 038B BO 00

1490 0380 E6 80

1491 038F F4

1492 0390

1493 0390 BO 50

1494 0392 E6 60

1495 0394 EB 10

1496

1491

1498

1499 0396 FA

1500 0391 E6 64

150 I

1502 0399 29 C9

1503 039B E4 64

1504 0390 A8 02

1505 039F EO FA

1506 03Al C3

1501

1508

1509

1510 03A2 2B C9

151 I 03A4 83 06

1512 03A6 E4 64

1513 03A8 A8 01

1514 03AA 15 06

1515 03AC E2 F8

1516 03AE FE CB

1511 03BO i5 F4

15180392 C3

1519

1520

1521

1522

1523

1524

1525

1526

1521

1528

1529

1530

1531 t 532 0393 80 OE

1533 03B5 E6 80

1534

'535 03B7 B8 ---- R

1536 039A 8E 08

1537 03BC 8B IE 00i2 R

1538 03CO FC

1539 03C 1 89 ecoo

'540 03C4 2B FF

1-15

06-10-85

INSURE A 55H IS RECEIVED. :

READ MANUFACTURING AND DISPLAY :

;

,JUMPERS AND SAVE IN MFG_TEST.

-----------------------­ - - - - -­ - -­ - -­ - --­

~ - - - - ­ CHECKPO I NT OA

TSTI :

TST2 :

ERRO:

TST4:

MOV

MOV

JMP

TST4_BI TEST

"Z

'N

TST4_A: MOV

TST4_C;

""P

'N eMP

MOV

OUT

MOV

OUT

AL,OAH

MFG_PORT, AL

<><><><><><><><><> <> <><>

<><>

SOFT RESET (HANDLE ALL POSS IBLE COND 1 T IONS)

CHECKPOINT OA <><>

100 MILLISECONDS FOR THIS LOOP

CHECK FOR I NPUT BUFFER FULL

SUB

IN

MOV

TEST

JZ

IN

TEST

LOOPNZ

JZ

CX,CX

AL, STATUS_PORT

AH.AL

AH, OUT_BUF_FULL

TST2

AL,PORT A

AH, I NPT=eUF_FULL

TSTI

TST4

HLT

ISSUE A RESET TO THE 8042

NOV

OUT

AL,OBH

MFG_PORT, AL

GO IF NOT

FLUSH

I S THE OUTPUT BUFFER ALSO FULL?

TRY AGAIN

CONTINUE IF OK

HALTS Y STEM J F BUFFER FULL

<><> <><><> <> <> <> <> <> <><>

<> <> CHECK PO I NT OB <><>

AL,SELF_TEST

SP,OFFSET C8042A

SHORT C8042

AL,DUT_BUF_FULL

TST4 A

AL,PORT_A

SP,DFFSET OBF_ 42A

AL,PORT_A

-

AL,55H

AL,OCH

MFG_PORT, AL

SELF TEST COMMAND

SET RETURN ADDRESS

I S THE OUTPUT BUFFER FLLL?

GO IF NOT

FLUSH

SET RETURN ADDRESS

GO .A I T FOR BUFFER

GET THE ENDING RESPONSE

<><><><><><><><><><><><>

<><> CHECKPOINT

GO IF NOT OK

OC <><>

"NZ ERRO

1----­

GET THE SW ITCH SETT I NGS

E30B:

E30C:

MOV

MOV

J"P

MDV

J"P

IN

OUT

AL, READ 8042 INPUT

SP, OFFSET C8042C

SHORT C8042

SP,OFFSET OBF 42B

SHORT OBF 42 -

AL,PORT A­

OMA_PAGE.;., ,AL

READ I NPUT COMMAND

SET RETURN ADDRESS

J SSUE COMMAND

SET RETURN ADDRESS

GO WAIT FOR RESPONSE

GET THE SW J TCH

SAVE TEMPORARY

WR I TE BYTE 0 OF 8042 MEMORY

MOV

NOV

J"P

TST4_D: JZ

AL,.R ITE 8042 LDC

SP, OFFSET C8042B

SHORT C8042

TST4_o1

NOV

OUT

HLT

TST4 01:

MOV

OUT

AL, DOH

MFG_PORT ,AL

AL, SOH

PORT A,AL

SHORl' E30A "MP

;----­

ISSUE THE COMMAN~ TO THE 8042

C8042: eLI

OUT

042

SUB

I,

'N

TEST

CX,CX

AL,STATUS_PORT

AL, I NPT_8UF_FULL

LOOPNZ

RET

-

1----­

WAIT FOR 8042 RESPONSE

OBF_ 42: SUB

MOV

C42_ZI 'N

TEST

C42

3.

"NZ

LOOP

DEC

JNZ

RET

CX,CX

BL.6

AL,STATUS_PDRT

AL, OUT _ BUF _FULL

C42 3

C42 -

BL

2

WR I TE BYTE COMMAND

SET RETURN ADDRESS

J SSUE THE COMMAND

CONT 1 NUE I F COMMAND ACCEPTED

<> <> <> <><><> <> <> <> <> <><>

<><> CHECKPOINT 00 <><>

ENABLE OUTPUT BUFFER FULL INTERRUPT,

01 SABLE KEYBOARD, SET SYSTEM FLAG,

PC 1 COMPATIBILITY, INHIBIT OVERRIDE

NO INTERRLPTS ALLOWED

SEND COMMAND IN AL REG I STER

LOOP COUNT

WA I T FOR THE COMMAND ACCEPTED

;

;

200MS/PER LOOp· 6

CHECK FOR RESPONSE

,

GO I F RESPONSE

TRY AGAIN

; DECREMENT LOOP COUNT

=

lZ00 illS +

; RETURN TO CALLER

TEST. I I

BASE 64K READ/WR I TE MEMORY TEST

DESCR I PT I ON

WRITE/READ/VERIFY DATA PATTERNS

AA,55,FF,01, AND 00 TO 1 ST 64K

OF STORAGE. VER IFY STORAGE

;

ADDRESSABILI TY.

- --------------------------------------­

1----FILL MEMORY WITH DATA

E30A: MOV

OUT

AL,OEH

MFG_PDRT ,AL

NOV

MOV

MOV eLO

MOV

SUB

AX,OATA

DS,AX

BX , PRESET_FLAG

CX,2000H-4

01,01

<><><><><> <> <> <> <> <> <> <>

<><> CHECKPOINT OE <><>

COET THE SYSTEM SEGMENT

OF'DATA

SAVE ORESET FLAG IN BX

SET DIRECTION FLAG TO INCREMENT

SET FOR 32K WORDS

FIRST 16K

5-42

TEST1

IBM Per~onal COlllputer MACRO Assembler

TEST I ----

Ver~jon 2.00

06/10/85 POWER ON SELF TEST lPOST)

1587

1588

1589

1590 0400 B9 COOO

1591 0403 8E 09

1592 0405 28 06

1593 0401 88 01

1594 0409 E8 00

1595 0408 3D AA55

1596 040E 6A 00

15910410 74 OC

1598 0412 81 Cl 0080

1599 0416 81 F9 C800

1600 041 A 7C E1

1601 041C 23 C9

1602 041E

1603 041E 15 03

1604 0420 E9 050F R

1605

1606

1601

160e

1609

1610

1611

1612

1613

1614

16150423 BA 0308

1616 0426 2A CO

1617 0426 EE

1616

1619 0429 BA 03B8

1620 042C 80 01

1621 042E EE

1622 042F 83 EA 04

1623

1624:: 0010

1625

1626 0432 BB 0030 E

1621

1626 0435 B9 0010

1629

1630

1631

1632 0438 32 E4

1633

1634

1635

1636 043A 6A C4

1637 043C EE

1636 0430 42

1639 043E FE C4

1640 0440 2E: 8A

1641 0443 EE

1642 0444 43

1643 0445 4A

1644 0446 E2 F2

1645 0446 6A E2

1646 044A 80 E4 FO

164 7 0440 60 FC DO

1646 0450 14 08

1649 0452 88 0000 E

1650 0455 8A 0304

1651 0456 EB DB

1652

1653

1654

1541 03C6 28 F6

1542 03C8 28 CO

1543 03CA 8E 08

1544 03CC 8E CO

1545 03CE 81 FB 1234

1546 0302 75 03

1547 0304 E9 0582 R

1548

1549

1550

1551 0307 BO OF

1552 0309 E6 80

1553

1554 0308 BO 80

1555 0300 E6 87

1556 030F 8C 03EC R

1557 03E2 E9 0000 E

1558 03E5 86 08

1559 03E7 75 OF

1560 03E9 E9 0580 R

1561

1562

1563

1564 03EC 03E5 R

1565 03EE 0350 R

1566 03FO 0368 R

1567 03F2 0389 R

1568 03F4 0379 R

1569 03F6 037E R

1570

1571

1572

1573

1574

1515

1576

1511

1518

1519

1580

1581

1582 03F8

1583 03F8 8A C1

1584 03FA E6 81

1585 03FC 8A C3

1586 03FE E6 82

1-16

06-10-65

SUB

SUB

"OV

"OV

C"P

JNZ

J"P

51,51

AX,AX

DS,AX

ES,AX

8X,1234H

E30A 0

CLR_STG

; WARM START?

I GO IF NOT

1----GET THE INPUT 8UFFER ISWITCH SETTlNGSf

E30A 0, MOV

OUT

AL,OFH

MFG_PORT ,AL

<><> <> <> <> <> <> <><><><> <>

<><> CHECKPOINT OF <><>

C30 :

MOV

OUT

MOV

JMP

MOV

JNZ

JMP

AL.PAR I TY _CHECK

DMA_PAGE+6,AL

SP,OFFSET C2

STGTST CNT

8X,AX -

C31

C33

TEMPORARY STACK FOR POST ROUTINES

SET BASE MEMORY PAR ITY

USE AS TEMPORARY SAVE

SET RETURN ADDRESS

1 SAVE FAILING BIT PATTERN

STORAGE OK, CONT I NUE

C2 OW

Ca042A OW

OBF 42A OW

C80428 OW

C8042C OW

OBF _ 428 OW

C30

TST4 6

TST4-C

TST4-0

E30B­

E30C

;

;

-

-

----

- -

-

- - - - - - - - - - - - - - - - - - - - - - -

------

-

---­

I BASE 64K STORAGE FAILURE

DISPLAY THE CHECKPOINT (MFG CHECKPOINT)

AND XOR EXPECTED WITH READ IN MFG PORT

DISPLAY CHECKPOINT IN MFG PORT+3

DISPLAY XOR'D DATA HIGH BYTE MFG_PORT+I

LOW BYTE IN MFG PORT+2

,

;

-

A READ twR I TE SCOPE LOOP OF THE FIRST

WORD FOR POSSI8LE ADDRESS LINE FAILURES -----

- -

-

- - - - - - - - - - - - - - - - -- - - -

------------­

C31:

"OV

OUT

"OV

OUT

AL,8H

MFG PDRT+ 1 ,AL

AL.BL

MFG_PORT+2,AL

SAVE HIGH BYTE

I SAVE LOW BYTE

; - - - - CHECK FOR VIDEO ROM

M 1 :

MOV

MOV

SUB

MOV

JMP

CMP

POP

JZ

AOO

CMP

JL

ANO

CX,OCOOOH

DS,CX

8X.8X

AX, [eX)

' . 2

AX ,OAA55H

Z5

CX ,060H

CX ,OC800H

MI

CX,CX

START OF 1/0 ROM

PO I NT TO SEGMENT

GET THE FIRST 2 LOCATIONS

BUS SETTLE

I S THE V IDEO ROM PRESENT?

GO IF YES

POINT TO NEXT 2K BLOCK

TOP OF V IDEO ROM AREA YET?

TRY AGAIN

SET NON ZERO FLAG

Z5:

JNZ C32 GO IF NOT

JMP C31 ­ 0 BYPASS ERROR 01 SPLAY IF VIDEO ROM

;

~~~ ~~~~~-~~~~-~~-~~~;~~;-~~~;;-~~~~~--- - - -- ------ -­

,

TH 1 S ROUT! NE I N iT 1ALI ZES THE ATTACHMENT TO

TO DISPLAY FIRST 64K STORAGE ERRORS.

; 80TH COLOR AND MONOCHROME ATTACHMENTS ARE INITIALIZED.

;

------

- - - - - - - - - - - -

-

- -

-

-

---

- - - - - - -

-

--------------

------­

; - - - - INITIALIZE COLOR/MONOCHROME

C3Z:

M.

MOV

SUB

OUT

MOV

MOV

OUT

SUB

OX ,3D8H

AL,AL

DX,AL

CONTROL REGISTER ADDRESS OF COLOR CARD

MODE SET

DX,03B8H

AL, !

OX,AL

OX,4

CONTROL REGISTER ADDRESS OF B/W CARD

MODE SET FOR CARD

RESET VIDEO

BACK TO BASE REG I STER

EDU

XOR

10H

MOV BX.OFFSET VIDEO PARMS+M4"'3 ; POINT TO VIDEO PARAMETERS

ASSUME DS:CODE

"OV CX,M4 ; COUNT OF MONOCHROME V IDEO PARAMETERS ex

POINTS TO CORRECT ROW OF INITIALIZATION TABLE

AH.AH ; AH IS REGI STER NUMBER DURING LOOP

LOOP THROUGH TABLE, OUTPUTT I NG REG! STER ADDRESS, THEN VALUE FROM TA8LE

~ 1 0: MOV

OUT

INC

INC

"OV

OUT

INC

DEC

LOOP

MOV

ANO

CMP

JZ

MOV

MOV

J"P

AL,AH

OX,AL

OX

AH

AL,CS:[8X)

OX,AL ax

OX

MIO

AH,DL

AH,OFOH

AH.ODOH

Z 3

8X.OFFSET VIDEO PARMS

DX,3D4H -

Z_2

1----FILL REGEN AREA WI TH BLANK

GET 61545 REG 1 STER NUM8ER

POINT TO DATA PORT

NEXT REGI STER VALUE

GET T A8LE VALUE

OUT TO CHIP

NEXT IN TABLE

BACK TO PO I NTER REG I STER

DO THE WHOLE TABLE

CHECK I F COLOR CARD DONE

STR 1 P UNWANTED 81 TS

I SIT THE COLOR CARD?

CONT 1 NUE 1 F COLOR

PO I NT TO v

COLOR 8ASE

IDEO PARAMETERS

CONTINUE

TESTl

5-43

IBM p.,.sonal Compute,. MACRO Aa.emble,. Ve,.sion 2.00

TESTI - - - 06/10/85 POWER ON SELF TEST (POST)

1655 045A 33 FF

1656 045C 88 8000

1657 045F 8E CO

1658

1659 0461 89 0800

1660 0464 88 0720

1661 0467 F3/ A8

1662

1663 0469 33 FF

1664 0468 88 8800

1665 046E 8E C3

1666 0470 89 2000

1667 0473 F31 AB

1668

1669

1670

1671 0475 BA 03Ba

1672 0478 BO 29

1673 047A EE

1674

1675

1676

1677 0-478 42

1678 047C 80 30

1679 047E EE

1680

1681

1682

1683 047F 8A 0308

IbM 0482 80 28

1685 0484 EE

1686

1687

16068

16069 0485 42

1690 0486 80 30

1691 0488 EE

1692

1693

1694

1695 0489 8C ce

1696 0488 8E DO

1697 .

1698 0480 8B 8000

1699 0490 8E 08

1700

1701 04928030

1702 0494 89 0006

1703 0497 28 FF

\704 0499 88 05

1705 0498 47

1706 049C 47

1707 0490 E2 FA

1708

1709 049F 80 FF B8

1710 04A2 74 OC

171 I 04A4 28 FF

1712

1713 04A6 87 80

1714 04A8 8E C3

1715 04AA 87 86

1716 04AC 8E DB

17 I 7 04AE E8 E2

1718

1719

1720

1721 0480 80 20

1722 0482 88 05

1723 0484 26: 66 05

1724048747

1725048847

17260489 E4 61

1727 0488 81 04

1728 0480 02 E6

1729 04BF 8C 057A R

1730 04C2 E8 IB

1731

1732 04C4 E4 81

1733 04C6 24 OF

1734 04C6 BC 057C R

1735 04C8 E8 12

1736 04CO E4 82

1737 04CF al 04

1738 0401 02 E8

1739 0403 8C 057E R

1740 0406 E8 07

1741 0406 E4 82

1742 040A 24 OF

1743 040C 8C 0560 R

1744

1145

1746

1747 040F 04 90

1746 04El 27

1749 04E2 14 40

1750 04E4 27

1751

1752 04E5 88 05

1753 04E7 26: 66 05

1754 04EA 47

1755 04E8 47

1756 04EC C3

1757

1758

1759

1160 04EO 80 20

1761 04EF 88 05

1762 04FI 26: 88 05

1763 04F4 41

1764 04F5 47

1765 04F6 80 32

1766 04F8 88 05

1767 04FA 26: 88 05

1768 04Fo 47

1-17

06-10-85

Z_31

21,

XOR

NOV

NOV

NOV

NOV

REP

01,01

AX,08000H

ES,AX

CX,2048

AX, • '+7-H

STOSW

SET UP PO I NTER FOR REGEN

SET UP ES TO V IOEO REGEN

NUMBER OF WORDS I N MONOCHROME CARD

FILL CHARACTER FOR ALPHA + ATTR 18UTE

FILL THE REGEN BUFFER WITH 8LANKS

XOR

NOV

MOV

MOV

REP

01,01

BX,08600H

ES,8X

CX,8192

STOSW

CLEAR COLOR V IDEO BUFFER !EMORY

SET UP ES TO COLOR V I OEO MEMORY

; FILL WITH BLANKS

ENA8LE V I DEO AND CORRECT PORT SETTI NG

MOV

MOV

OUT

OX,388H

AL,29H

OX,AL ; SET V IDEO ENABLE PORT

SET UP OVERSCAN REGI STER

INC

MOV

OUT

OX

AL,30H oX,AL

SET OVERSCAN PORT TO A DEF AUL T

VALUE 30H FOR ALL MODES EXCEPT 640X200

OUTPUT THE CORRECT VALUE TO 309 PORT

ENABLE COLOR V IDEO AND CORRECT PORT SETT I NG

MOV

NOV

OUT

OX,3D6H

AL,28H

OX,AL

;

-----

SET UP OVERSCAN REG I STER

INC

NOV

OUT ox

AL,30H

DX,AL

1-----

DISPLAY FAILING CHECKPOINT AND

NOV

NOV

AX,CS

SS,AX

NOV

NOV aX,08000H

OS,8X

NOV

NOV

SUB

MOV

INC

INC

LOOP

AL, ' 0 '

CX,6

01,01

(01) ,AL

01

01

2

CMP

JZ

SUB

8H,086H

2 I oT,ol

MOV

MOV

MOV

MOV

JMP

8H,080H

ES,8X

8H,088H

OS,8X

Z_O

PRINT FAILING BIT PATTERN

MOV

MOV

NOV

INC

INC

IN

NOV

SHR

NOV

JNP

AL,' ,

(DI] ,AL

ES: [01] ,AL

01

01

AL,MFG PORT+l

CL,4 -

AL,CL

SP,OFFSET ZI

SHORT PR ­ a

SET V IDEO ENABLE PORT

SET OVERSCAN PORT TO A oEF AUL T

VALUE 30H FOR ALL NODES EXCEPT 640X200

OUTPUT THE CORRECT VALUE TO 309 PORT

SET STACK SEGMENT TO CODE SEGMENT

SET OS TO 8/W DISPLAY 8UFFER

DISPLAY BANK 000000

START AT 0

WRITE TO DISPLAY REGEN 8UFFER

PO I NT TO NEXT POS I TI ON

CHECK THAT COLOR 8UFFER WR I TTEN

PO I NT TO START OF BUFFER

ES

=

MONOCHROME

SET SEGMENT TO COLOR

OS = COLOR

I DISPLAY A BLANK

; WR I TE TO COLOR 8UFFER

; WR I TE TO MONOCHROME REGEN BUFFER

;- POINT TO NEXT POSITION

; GET THE HIGH BYTE OF FAILING PATTERN

; SHIFT COUNT

; NIB8LE SWAP

Z2:

Z31

PR:

Z4;

ADO

DAA

AOC

OAA

MOV

MOV

INC

INC

RET

IN

ANa

NOV

JNP

IN

NOV

SHR

NOV

JNP

IN

ANa

MOV

AL,NFG PORT+ I

AL,OFH-

SP. OFFSET Z2 0

SHORT PR ­

AL,MFG PORT+2

CL,4 -

AL,CL

SP,OFFSET Z3 0

SHORT PR ­

AL. NFG PORT +2

AL,OFH­

SP,OFFSET Z4_0

CONVERT AND PR I NT

AL,090H

AL,040H

[DI] ,AL

ES: [01] ,AL

01

01

DISPLAY 201 ERROR

NOV

NOV

MOV

INC

INC

NOV

NOV

NOV

INC

AL,' ,

(DI] ,AL

ES: [01] ,AL

01

01

AL, '2'

[01] ,AL

ES: [01] ,AL

DI

ISOLATE TO LOW N fBBLE

GET THE HIGH BYTE OF FAILING PATTERN

SHIFT COUNT

NI8BLE SWAP

I SOLATE TO LOW NIBBLE

RETURN TO Z4:

CONVERT OO-OF TO ASC I I CHARACTER

ADD FIRST CONVERS I ON FACTOR

AO.JUST FOR NUMER I C AND ALPHA RANGE

ADD CONVERSION AND AD.JUST LOW NI88LE

ADJUST HIGH NIB8LE TO ASCII RANGE

WR I TE TO COLOR BUFFER

WR I TE TO MONOCHROME BUFFER

POINT TO NEXT POSITION

01 SPLA Y A BLANK

WR I TE TO 0 I SPLA Y REGEN BUFFER

WR I TE TO MONOCHROME BUFFER

POINT TO NEXT POSITION

DISPLAY 201 ERROR

WR I TE TO 0 I SPLAY REGEN BUFFER

WR f TE TO MONOCHROME BUFFER

POINT TO NEXT POSITION

5-44

TEST1

IBM Person. I Computer MACRO Asse ...bler VersIon 2.00

TEST! - - - 06/10/85 POWER ON SELF TEST (POSTI

1769 04FE 41

1170 04FF BO 30

1771 0501 88 05

1772 0503 26: 88 05

1173 0506 41

1174 0507 41

1175 0508 90 31

1176 050A 88 05

1771 osoe

2&: 88 05

1118

1119

1180

1181 050F 80 00

1182 0511 E& 80

1183 0513 E& 83

11840515 2B C9

1185 0511

1186

1181051128 CO

I 188 05 I 9 8E 08

1189 0518 88 AA55

1190 051E 28 FF

1791 0520 89 05

1792 0522 88 05

1193 0524 E2 FI

1194 0526

1195 0526 89 05

1196 0528 8B 05

1197 052A E2 FA

1198 052C

1199 052C 89 05

1800 052E 8B 05

1801 0530 E2 FA

1802 0532

'803 0532 89 05

1804 0534 88 05

1805 0536 E2 FA

1806 0538

1807 0538 89 05

1808 053A 88 05

1809 053C E2 FA

1810

181 I

1812

1813 053E E4 81

1814 0540 E& 80

1815 0542

1816 0542 B8 AA55

1817054589 05

1818 0541 8B 05

1819 0549 E2 Fl

1820 0548

1821 054B 89 05

1822 0540 8B 05

1823 054F E2 FA

18240551

1825 0551 89 05

1826 0553 88 05

1827 0555 E2 FA

1828

1829

1830

1831 0557 E4 82

1832 0559 E6 80

1833 0558 88 AA55

1834 055E 2B FF

1835 05&0 89 05

1836 0562 8B 05

1831 0564 E2 F8

1838 05&&

1839 0566 89 05

1840 0568 88 05

1841 056A E2 FA

1842 056C

1843 056C 89 05

1844 056E 88 05

1845 0570 E2 FA

1846 0512

1841 0572 89 05

1848 0574 88 05

1849 0516 E2 FA

1850 0578 EB 95

1851

1852 051A 04C4 R

1853 051C 04CO R

1854 051E 0408 R

1855 0580 04EO R

1856

1851

1858

1859

1860

1861 0582

1862

1863 0582 F3/ A8

1864 0584 88 - - - - R

1865 0587 8E 08

1866 0589 89 IE 0012 R

1861

1868

1869

1810 0580

1811 0580 B8 - - - - R

1812 0590 BE 08

1813 0592 8C 0000

1814 0595 8E 04

1815 0591 BC 8000

1816

1817

1878

1 ~79 OS9A C6 Ob 0084 R 18

1880

1881 059F 80 11

IB82 05AI E6 80

1-18

06-10-85

INC

MOV

MOV

MOV

INC

INC

MOV

MOV

MOV

01

AL,

'0'

[01] ,AL

ES: [01] ,AL

01

01

AL,

[01

'I'

J

,AL

ES: [01] ,AL

WR I TE TO 0 I SPLA Y REGEN BUFFER

WR I TE TO MONOCHROME BUFFER

POINT TO NEXT POSITION

WRITE TO DISPLAY REGEN BUFFER

WR I TE TO MONOCHROME BUFFER

;-----

ROLL ERROR CODE IN MFG_PORT --> FIRST THE CHECKPOINT

C31_A:

MOV

OUT

OUT

SUB

SUB

MOV

MOV

SUB

MOV

MOV

LOOP

MOV

MOV

LOOP

AL,OOOH

MFG_PORT ,AL

MFG_PORT+3,AL

CX,CX

AX,AX

OS,AX

AX,OAA55H

01,01

[01] ,AX

AX, [01] e31 A

I~: lci~]

: - - - - CLEAR STORAGE ENTRY

CLR STG:

ASSUME OStoATA

REP

MOV

MOV

MOV

STOSW

AX,OATA

OS,AX

!PRESET_FLAG, BX

SETUP STACK SEGMENT AND SP

C331

"OV

MOV

MOV

MOV

MOV

AX ,DATA

OS,AX

SP,POST SS

SS,SP

SP, POST SP

; ----I NIT I ALI ZE 0 I SPLA Y ROW COUNT

MOV

MOV

OUT

OROWS,25-1

AL.IIH

MFG_PORT ,AL j

I

<><><><><><><><><><><><>

<><> CHECKPOINT 00 <><>

; ALSO DISPLAY CHECK POINT IN PORT 83

SETUP SEGMENT

WRITE AN AA55

; READ THE FIRST WORD

: DISPLAY CHECKPOINT LONGER

1-----

MOV

MOV

LOOP

MOV

MOV

LOOP

MOV

MOV

LOOP

[01] ,AX

AX, [01

J e31 e

[a!] ,AX

AX, [OJ] e31

-

0

[01] ,AX

AX, [01] e31 _E

ROLL ERROR CODE IN MFG_PORT --> NEXT THE HIGH BYTE e31 _G; e31 _H: e31 "

IN

OUT

MOV

MOV

MOV

LOOP

MOV

MOV

LOOP

MOV

MOV

LOOP

AL,MFG_PORT+ 1

MFG_PORT, AL

AX,OAA55H

[01] ,AX

AX, [01] e31 G

[OI],AX

AX, [OJ]

[01] ,AX

AX, [01

J e31 I

XOR OF FAILING

I HIGH BYTE

BIT PATTERN

1

WRITE AN AA55

1 READ THE F! RST WORD

ROLL ERROR CODE IN MFG_PORT --> THEN THE LOW BYTE

AL,MFG PORT+2

MFG_PORT ,AL

AX ,OAA55H

01,01

[01] ,AX

AX, [OJ]

LOW BYTE

I WRITE AN AA55

READ THE FIRST WORD

IN

OUT e31

MOV

_K.

SUB

MOV

MOV

LOOP e31 _L;

MOV

MOV

LOOP e31

-

M,

MOV

MOV

LOOP

MOV

MOV

LOOP

JMP

ZI 0

Z2-0

Z3-0

Z4:0

OW

OW

OW

OW

[01] ,AX

AX, [01 ]

[01] ,AX

AX, [OJ]

[01] ,AX

AX, [01 ] e31

e31

N

0

ZI

Z2

Z3

Z4

00 AGAIN

TEMPORARY STACK

TEMPORARY STACK

TEMPORARY STACK

TEMPORARY STACK

STORE 32K '!OROS OF 0000

RESTORE DATA SEGMENT

RESTORE RESET FLAG

SET DATA SEGMENT

GET STACK VALUE

SET THE STACK UP

ST ACK I S READY TO GO

SET ROWS FOR PRINT SCREEN DEFAULT

<> <> <> <> <><><> <><><><><>

<><> CHECKPOINT I! <><>

TESTl

5-45

IBM Persons I Computer MACRO Alisembler Veralon 2.00

TESTI - - - - 06/10/85 POWER ON SELF TEST IPOST)

1883

1884

1885

1886 05A3 32 08

1887 05A5 33 C9

1886 05A7 90

1669 05A8

1890 05A8 E4 61

1891 05AA AS 10

1892 05AC EI FA

1693 05AE

1894 05AE E4 61

1895 05BO A8 10

1896 0582 EO FA

1891

1898 0584 FE C8

1899 0586 75 FO

1900

1901 0588 81 F9 F8A7

1902 058C 13 07

1903 058E

1904 058E 8A 0101

1905 05CI E8 0000 E

1906 05C4 F4

1907 05C5

190e 05C5 81 F9 F9FD

1909 05C9 77 F3

1910

1911

1912

1913 05C8 E4 82

1914 05CD 24 F8

1915 05CF A2 0012 R

1916 05D2 2A CO

19170504 E6 82

191 IS

1919

1920

1921

1922

1923

1924

1925

1926

1927

1928

1929

1930

1931 0506 OF 01 EO

1932 0509 A9 OOOF

1933 05DC 75 34

1934

1935

1936

1937 05DE BO 12

1938 05EO E6 eo

1939

1940 05E2 IE

1941 05E3 07

1942 05E4 BF DOAO

1943 05E7 B9 0003

1944 05EA B8 AAAA

1945 05EO E8 0615 R

1946 05FO B8 5555

1947 05F3 E8 0615 R

1948 05F6 28 CO

1949 05F8 E8 0615 R

1950

1951

1952

1953 05FB FD

1954 05FC 9C

1955 05FD 58

1956 05FE A9 0200

1957 0601 75 OF

1958 0603 A9 0400

1959 0606 14 OA

1960 0608 FC

1961 0609 9C

1962 060A 58

1963 060B A9 0400

1964 060E 15 02

1965

1966 0610 EB 3D

1961 0612

1968 0612 F4

1969 0613 EB FD

1910

1971

1972

1913 0615 89 0003

1914 0618 F3/ AB

1975 061A BD DOAO

1976

1977 0610 26

1978

1979 061E OF

1980 061F

1981 061F 8B 5E 00

1982 0622

1983 061F

1984 061F 01

1985 0622

1986 0622 BD DOAO

1981

1988 0625 26

1989

1990 0626 OF

1991 0621

1992 0627 8B 56 00

1993 062A

1994 0627

1995 0621 01

1996 062A

1-19

06-10-85

J-----

VERIFY SPEED/REFRESH CLOCK RATES I ERROR:: 1 LONG AND 1 SHORT BEEP)

XOR

XOR

EVEN

BL,BL

CX,CX

CLEAR REFRESH CYCLE REPEAT COUNT

INITIALIZE SPEED RATE REG[STER

PLACE ON EVEN WORD BOUNDARY

C34:

C35:

C36E:

IN

TEST

L.OOPZ

'N

TEST

L.OOPNZ

DEC

JNZ

CMP

JAE

MOV

CALL

HLT

AL,PORT 8

ALtREFRESH BIT

C34 aL

C• •

CX I RATE UPPER

C36 -

DX,OIOIH

ERR_8EEP

READ REFRESH BIT REG 1 STER

MASK FOR BIT

DECREMENT LOOP COUNTER TILL ON

READ REFRESH B[T REGISTER

MASK FOR BIT

DECREMENT LOOP COUNTER TILL OFF

DECREMENT REFRESH CYCLE REPEAT COUNT

REPEAT TILL CYCLE COUNT DONE

CHECK FOR RATE BEL.OW UPPER LIMIT

SK I P ERROR BEEP I F BELOW MAX I MUM

GET BEEP COUNTS FOR REFRESH ERROR

CALL. TO POST ERROR BEEP ROUT 1 NES

HALT SYSTEM BAD REFRESH RATE

CX ,RATE LOWER

C36E -

CHECI( FOR RATE ABOVE LOWER LIMIT

GO TO ERROR BEEP I F BELOW MIN I MUM i----GET THE INPUT 8UFFER ISWITCH SETTINGS)

'N

AND

MOV sua

OUT

AL.,DMA PAGE+I I GET TI-£ SWITCH SETTINGS

:~~Ei;~~A~NHI8+0SP_.JMP+~F~A~~0~~~~~~G~EM+BASE_MEM8

I STRIP BITS

AL., AL

DMA_PAGE+ I ,AL.

1---------------------------------­

TEST.I1A

VERIF'T' 286 L.GDT/SGOT L1DT/SIDT I

[NSTRUCT IONS

DESCR I PT I ON

LOAD GOT AND IDT REGISTERS W[TH

;

; ----­ AA,55,00 AND VERIFY CORRECT.

I RESET DMA PAGE

; - - - - VERIFY STATUS INDICATE COMPATlBIL.ITY (REAL) MODE

; GET THE CURRENT STATUS WORD

I PE/MP/EM/TS BITS SHOULD BE ZERO

1 GO IF STATUS NOT REAL MODE

SMSW

Da

TEST

JNZ

PUSH

POP

MOV

MOV

MOV

CALL

MOY

CALL sua

CALL

AX

OOFH,OOlH,OEOH

AX,OFH

ERR_PROT

TEST PROTECTED MODE REGISTERS

MOV

OUT

AL,12H

MFG_PORT ,AL

OS

ES

DI,SYS IDT_LOC

CX,3

AX , OAAAAH

WRT PAT

AX.05555H

WRT PAT

AX.AX

WRT_PAT

1----­

TEST 286 CONTROL FLAGS

STO

PUSHF

POP

TEST

JNZ

TEST

JZ

CLD

PUSHF

POP

TEST

JNZ

AX

AX,0200H

ERR PROT

AX I0400H

ERR_PROT

AX

AX ,0400H

ERR_PROT

JMP

ERR PROTI

HLT

JMP

1-----

SHORT C37A

WRITE TO 286 REGISTERS

WRT_PAT:MOV

REP

MOY

SEGOV oa

LlDT oa

110001 LABEL

MOY

110002 LABEL

ORO oa

DRG

MOV

SEGOV oa

LGOT oa

+ 110004 LABEL

MOV

+ 110005 LABEL

ORO

DB

ORG

CX,3

STOSW

BP,SYS lOT LOC

ES -

026H

[BP]

OOFH

8YTE

BX ,WORD PTR

[ap]

BYTE

OFFSET CS: 11000 1

OOtH

OFFSET CS: 11 OOOZ

BP,SYS_IOT_LOC

ES

OZ6H

[ap]

OOFH

BYTE ox, WORD PTR [BP]

BYTE

OFFSET CSP10004

001H

OFFSET CS:? 10005

<><><><> <> <><><><><><><>

<><> CHECKPO I NT ! 2 <><>

SET ES TO SAME SEGMENT AS OS

USE THIS AREA TO BUILD TEST PATTERN

F[RST PATTERN

WRITE NEXT PATTERN

WRITE 0

I SET 0 I RECT I ON FLAG FOR DECREMENT

I GET THE FLAGS

I NTERRUPT FLAG SHOULD BE OFF

GO IF NOT

CHECK DIRECTION FLAG

GO IF NOT SET

CLEAR DIRECT I ON FLAG

INSURE DIRECTION FLAG I S RESET

GO IF NOT

TEST OK CaNT I NUE

PROTECTED MODE REGI STER FAILURE

INSURE NO BREAKOUT OF HALT

J STORE 6 BYTES OF PATTERN

I LOAO THE lOT

; REGISTER FROM THIS AREA

I L.OAD THE GOT

I FROM THE SAME AREA

5-46

TEST1

IBM P.rsonal COlllputer MACRO A•••mbler

TEST1 ----

V.rslon 2.00

06/10/85 POWER ON SELF TEST (POST)

1991

1998

1999

2000 062A BO D8AO

200 I

2002 0620 26

2003

2004 062E OF

2005 062F

2006 0&2F 8B 4E 00

2007 0632

2008 062F

2009 062F 01

20 1 a

0632

20 I I 0632 BD D8A5

2012

2013 0635 26

2014

2015 0636 OF

2016 0631

2011 0637 03 46 00

2018 063A

2019 0637

2020 0637 01

2021 063A

2022 063'" BF oOAO

2023 0630 8B 05

2024 063F B9 0005

2025 0642 BE D8AO

2026 0645 26: 38 04

2021 0648 15 C8

2026 064'" 46

2029 064B 46

2030 064C E2 F7

2031 064E C3

2032

2033

2034

2035

2036

2031 064F

2036 064F 2A CO

2039 0651 E6 FI

2040 0653 BO 1 I

2041 0655 E6 20

2042 0651 EB 00

2043 0659 BO 08

2044 065B E6 21

2045 0650 EB 00

2046

2041 065F BO 04

2046 0661 E6 21

2049 0663 ES 00

2050 0665 BO 01

2051 0661 E6 21

2052 0669 EB 00

2053 0668 BO FF

2054 0660 E6 21

2055

2056

2057

2056

2059

2060 066F SO 13

2061 0671 E6 80

2062

2063 0613 BO 11

2064 0615 E6 AO

2065 0617 EB 00

2066 0619 BO 70

2061 061B E6 AI

2066 0610 BO 02

2069 061F EB 00

2010 0661 E6 AI

2011 0663 EB 00

2012 0665 BO 0 I

2013 0661 E6 Al

2014 0669 EB 00

2015 066B BO FF

2016 0680 E6 AI

2017

2018

2019

2060 066F BO 14

2061 0691 E6 80

2082

2063 0693 B9 0078

2084 0696 2B FF

2065 0698 8E Cl

2066 069,.. B8 0000 E

2061 0690 AB

2066 069E 8C C8

2089 06AO AS

2090 06A 1 E2 Fl

2091

2092

2093

2094 06A3 80 15

2095 06A5 E6 80

2096

2091

2096 06A 1 SF 0040 R

2099 06AA OE

2100 06A8 IF

2101 06AC 8C 08

2102 06AE SE 0010 E

2103 06B1 S9 0010

2104

2105 06B4 A5

2106 06B5 41

2101 0686 41

2106 0681 E2 FB

2109

2110

;-----

READ AND VERIFY 266 REGISTERS

MOV

SEGOV

OB

SlOT

DB

+ 110007 LABEL

MOV

770008 LABEL

ORG

DB

ORG

MOV

SEGOV

DB

SGDT

DB

11000A LABEL

ADO

11000B LABEL

Cl7S1

ORG

08

ORG

MOV

MOV

MOV

MOV

CMP

"Nl

INC

INC

LOOP

RET

SP,GDT_LOe

E5

026H

[BP]

OOFH

BYTE eX,IBP]

BYTE

OFFSET CS: 110007

OOIH

OFFSET eSI1?OO06

BP,GoT_LOC+S

E5

026H

[BP]

OOFH

BYTE

AX,IBP]

BYTE

OFFSET es: nOOOA

OOIH

OFFSET CS: nOOOB

OI,SYS lOT LOC

AX, [Oil ex,s

5 I ,GOT LOC

AX,ES:TSI]

ERR_PROT

51

51 e31B

STORE THE REGI STERS HERE

I GET THE lOT REG I STER S

; GET THE GOT REG I STERS

GET THE PATTERN WR I TTEN

CHECK ALL REGISTERS

POINT TO THE BEGINNING

HALT IF ERROR

POINT TO NEXT WORO

; CONTINLE TILL DONE

;

----- -----

- - - - - -

---

- -

---

- -

-----------------------------­

; INITIALIZE THE 8259 INTERRUPT '1 CONTROLLER CHIP I

1----- ------- -------- ------------ ---- ---------------- --­

C31AI

SUB , RESET MATH PROCESSOR

OUT

MOV

AL,AL

X261+I,AL

AL,IIH

I

ICWI EDGE, MASTER , ICW4

OUT

"MP

MOV

INTAOO,AL

"2

AL,6

I/O DELAY

SETUP ICW2 I NTERRUPT TYPE 6 (8-F!

OUT

"MP

INTA01,AL '.2

I /0 DELAY

MASTER LEVEL 2 MOV

OUT

,)MP

MOV

OUT

"MP

MOV

OUT

AL,04H

INTAOIIAL ,'2

AL,OIH

INTAOI,AL '.2

ALIOFFH

INTAOI,AL

I SETUP I eW3 -

I/O DELAY

SETUP I CW4 MASTER, 8066 MODE

I/O DELAY

MASK ALL 'NTERRUPTS OFF

(V, DEO ROUT' NE ENABLES INTERRUPTS)

1--­

I INITIALIZE THE 8259 INTERRUPT .2 CONTROLLER CHIP :

, - - - - -

03,

MOV

OUT

MOV

OUT

"MP

MOV

OUT

MOV

"MP

OUT

"MP

MOV

OUT

"MP

MOV

OUT

AL,I3H

MFG_PORT, AL

AL,IIH

I NTBOO,AL '.2

AL,INT_TYPE

INTBOt,AL

AL,02H '.2

INTB01,AL

"2

AL,01H

INTBO 1 ,AL '.2

AL,OFFH

INTBOI,AL

<><> <> <> <> <><> <><> <><><>

<><> CHECKPO I NT leWI EDGE, SLAVE TCW4

13

I/O DELAY

SETUP ICW2 INTERRUPT TYPE 70 (l0-1F)

SETUP I CW3 SLAVE LEVEL 2

<><>

I/O DELAY

SETUP 'CW4 8086 MODE, SLAVE

I/O DELAY

MASK ALL I NTERRUPTS OFF

SET UP THE INTERRUPT VECTORS TO TEMPORARY INTERRUPT

MOV

OUT

MOV

SUB

MOV

MOV

STOS.

MOV

STOSW

LOOP

AL,I4H

MFG_PORT, AL

CX,18H

01,01

ES,DI

AX,OFFSET

AX,CS

03 all

<><><><><><><> <><> <><><>

<><> CHECKPOINT 14 <><>

FILL ALL INTERRUPT LOCATIONS

FIRST INTERRUPT LOCATION

SET (ES) ALSO

GET ADDRESS OF I NTERRUPT OFFSET

PLACE IN INTERRUPT VECTOR LOCATION

GET THE CURRENT CODE SEGMENT

PLACE CODE SEGMENT I N VECTOR LOCATI ON

ESTABLISH BIOS SUBROUTINE CALL INTERRUPT VECTORS

MOV

OUT

AL,I5H

MFG_PORT .AL

<> <><> <> <> <> <> <><> <> <><>

<><> CHECI(PO I NT 15 <><>

MOV

PUSH

POP

MOV

MOV

MOV

1-20

06-10-85

0 I ,OFFSET .V IDEO

CS

OS

AX,DS

SET V IDEO I NTERRUPT AREA

I SET UP ADDRESS OF VECTOR TABLE

I SET AX=SEGMENT

51 ,OFFSET VECTOR TABLE+16 ,START WITH VIDEO ENTRY

CX I 16

D3A; IiIOVSW

INC

INC

LOOP

01

01

D3A

;-

-

---

- - -

----

- -

----

- - - - - -- ----- -

--------­

MOVE VECTOR TABLE TO LOW MEMORY

SK I P SEGMENT PO INTER

TEST1

5-47

IBM Person" COlllputer MACRO Assembler Version 2.00

TESTl - - - 06/10/55 POWER ON SELF TEST (POST)

1-21

06-10-85

2111

2112

2113

2114

2115

2116

2111

2115 0689 E6 0000 E

2119

2120 068C 80 16

2121 068E E6 80

2122

2123

2124

2125 06CO 80 60

2126 06C2 E6 0000 E

2121 06C5 A8 80

2128 06C1 14 08

2129

2130 06C9 80 8E

2131 06C8 E6 0000 E

2132 06CE A5 60

2133 0600 14 15

2134

2135 0602 E8 64

2136

2131

2136

2139 0604 80 11

2140 0606 E6 80

2141

2142 0606 B6 SESE

2143 060B E6 0000 E

2144 060E OC 60

2145 06EO 66 C4

2146 06E2 E6 0000 E

2141 06E5 EB 51

2148

2149

2150

2151 06E1 88 8E6E

2152 06EA E6 0000 E

2153 06Eo 61 3E 0012 R 1234

2154 06F3 15 04

2155

2156 06F5 24 10

2151 06F1 EB 02

2158 06F9

2159 06F9 2A CO

2160 06F8

2161 06FB fl6 C4

2162 06FO E8 0000 E

2163

2164 0100 28 08

2165 0102 2B C9

2166 0104 Bl 90

2161 0106 B5 AE

2168

2169 010fl flA Cl

2110 010A Ee 0000 E

2111 0100 2A E4

2112 010F 03 De

2113 0111 FE C1

2114 0113 3A E9

2115 0115 15 FI

211601110B08

2117 011914 10

2118 011B BO AE

2119 0110 E8 0000 E

2180 0120 8A EO

2181 0122 80 AF

2182 0124 E8 0000 E

2183 0121 38 C3

2184 0129 14 00

2185

2186

2161

2188 0128 88 8E8E

2189 012E Efl 0000 E

2190 0131 OC 40

2191 013386 C4

2192 0135 E8 0000 E

2193

2194

2195

2196 0138

2191 0138 88 flA8A

2198 013B E6 0000 E

2199 onE

24 OF

2200 0140 15 01

2201

2202 0142 80 26

2203 0144 86 C4

2204 0146 E8 0000 E

2205 0149

2206 0149 80 18

2201 0148 E6 80

2208

2209

2210

2211 0140 E4 61

2212 014F OC OC

2213 0151 E6 61

2214

221 S

2216

22110153B019

22180155 E6 80

2219

2220 0151 88 018F

2221 015A E8 0000 E

2222

2223 0150 8C 0000

2224 0160 BE 04

TEST. 12

VERIFY CMOS CHECKSUM/BATTERY OK oESCR I PT I ON

OETERM I NE IF CONF I G RECORD

; CAN BE USED FOR INITIALIZATION.

1------------------------------------- - -­

ASSUME os

I DATA

CALL DOS SET THE DATA SEGMENT

MOV

OUT

AL,16H

MFG_PORT, AL

I S THE 8A TTERY LOW TH I S POWER UP?

MOV

CALL

TEST

JZ

MDV

CALL

TEST

JZ

AL,CMOS REG O+NMI

CMOS READ -

AL,100000008

CMOS 1 A

AL,CMOS OIAG+NMI

CMOS READ

AL,8AO 8AT

CMOS 1 -

<><><><><><><> <> <> <> <> <>

<><> CHECKPOINT 16 <><>

CHECK 8A TTERY CONO [T [ON

READ THE 8ATTERY STATUS

[5 THE BATTERY LOW?

ERROR I F YES

GET THE OLD STATUS

FROM 0 I AGNOST [C STATUS 8YTE

HAS CUSTOMER SETUP BEEN EXECUTED?

GO CHECK CHECKSUM IF YES

JMP SHORT CMOS4

SET DEFECTIVE 8ATTERY FLAG

CMOSIA: MOV

OUT

MOV

CALL

OR

XCHG

CALL

JMP

AL,11H

MFG_PORT ,AL

AX,X·1CMOS oIAG+NMI)

CMOS READ -

AL,8AD 8AT

AL,AH -

CMOS WR ITE

SHORT CMOS4

CONT I NUE WI THOUT CONF I GURAT I ON

<><><> <><> <> <> <> <> <> <><>

<><> CHECKPOINT 11 <><>

CMOS 0 I AGNOS TIC ST ATUS BYTE

GET THE CURRENT STATUS

SET THE DEAD 8ATTERY FLAG

SAVE

OUTPUT THE STATUS

GO TO MINIMUM CONFIGURATION

; - - - - VERIFY CHECKSUM

CMOS I: MOV

CALL

CMP

JNZ

AX,X·'CMOS DIAG+NMI)

CMOS READ -

ORE SET FLAG, 1234H

CMOS I_A

AND

JMP

CMOS! A:

SUB

CMOS! 81

XCHG

CALL

AL,W MEM SIZE

SHORT CMOS '_8

AL,AL

SUB

SUB

MOV

MDV

AL,AH

CMOS_WR I TE

8X,8X

CX,CX

CL,CMOS 01 SKETTE+NMI

CH,CMOS::::CKSUM_HI +NMI

CMOS2: MOl,'

CALL

SUB

ADD

INC

CMP

JNZ

OR

JZ

MOV

CALL

MOV

MDV

CALL

CMP

JZ

; - - - - -

AL,CL

CMOS READ

AH,AH

8X,AX

CL

CH,CL

CMOS2

8X,8X

CMOS3

AL.CMOS CKSUM HI+NMI

CMOS READ -

AH,AL

AL,CMOS CKSUM LO+NMI

CMOS READ

AX,BX

CMOS4

SET CMOS CHECKSUM ERROR

CMOS3: MOV

CALL

OR

XCHG

CALL

AX,X· (CMOS DIAG+NMI)

CMOS READ -

AL,8AD CKSUM

AL,AH -

CMOS_WR I TE

1-----

CMOS41

INSURE CMOS DIVIDERS SET

MOV

CALL

AND

JNZ

AX,X·iCMOS REG A+NMI)

CMOS READ -

AL.OOFH

CMOS9

CLEAR OLD STATUS

GET THE CURRENT STATUS

IS THI S A 50FT RESET

GO IF NOT

CLEAR ALL BUT THE CMOS/POR MEMORY SIZE

CLEAR STATUS IF POWER ON RESET

SAVE THE CURRENT STATUS

SET START OF CMOS CHECKSUMEo AREA

SET END OF CMOS CHECKSUMED AREA + 1 lFlRST 8YTE OF CHECKSUM)

ADDRESS THE 8EGINNING

INSURE AH=O

ADD TO CURRENT VALUE

PO I NT TO NEXT 8YTE ADDRESS I N CMOS

FINISHEO? IAT CHECKSUM BYTE HIGH)

GO IF NOT

BX MUST NOT 8E 0

CMOS 8AO IF CHECKSUM=O

GET THE CHECK SUM HIGH BYTE

FIRST BYTE OF CHECKSUM

SAVE IT

SECOND BYTE OF CHECKSUM

I S THE CHECKSUM OK

GO IF YES

ADDRESS DIAGNOSTIC STATUS

GET THE CURRENT STATUS

SET 8AD CHECKSUM FLAG

SAVE IT

SET FLAG

CMOS9 :

MDV

XCHG

CALL

;- - - - -

AL,26H

AL,AH

CMOS_WR ITE

"DV

OUT

AL,IBH

MFG_PORT ,AL

ENA8LE PROTECTED MODE

IN

OR

OUT

AL,PORT 8

AL,RAM PAR OFF

PORT_B7AL ­

SET RETURN ADDRESS 8YTE I N CMOS

"OV

OUT

MOV

CALL

MDV

MDV

ADDRESS CMOS REGI STER A

GET CURRENT DIVISORS

LOOK AT PERIODIC RATE BITS

EXIT IF SET TO SOMETHING USEFUL

ELSE SET THE STANDARD DEF AULT USED 8Y

BIOS FOR THE 916.56 US RATE

FOR THE PER I 00 I C CLOCK

<> <> <> <> <><><><> <> <> <><>

<><> CHECKPD I NT 16 <><>

DISABLE MEMORY AND I/O PARITY CHECKS

AL,!9H

MFG_PORT ,AL

<> <> <> <> <> <> <><><> <> <><>

<><> CHECK PO I NT 19 <><>

AX, I ·H+ (CMOS SHUT DOWN+NM I )

CMOS_WRITE -

; SET THE RETURN ADDRESS FOR

I THE FIRST SHUTDOWN RETURN ADDRESS

SP,POST SS

SS,SP

; SET STACK FOR SYSINIT1

5-48 TEST1

16M P.rsonal Co",put.r M.... CRO .... ss."'bl.r V.rslon 2.00

TEST! - - - - 06/10/85 POWER ON SELF TEST (POST)

[-22

06-[ 0-85

2243

2244

2245

2246

2241

2248

2249

2250

2251

2252

2253

2254

2255

2256

2251

2225 0162 BC 8000

222~ 0165 E8 0000 E

2221

2228

2229 0168 BO ! A

2230 016A E6 80

2231

2232

2233

2234 016C 6 .... 08

2235 016E IF

2236 016F Cl 06 005 .... 0000

2231 0115 C6 06 005C 00

2238 011 .... BE 0058

2239 0110 8E 06

2240 011F BC FFFD

2241

2242

2258

2259 0182 OF 0 I EO

2260 0185 .... 9 000 I

2261 0188 15 OC

2262

2263 018 .... 88 088F

2264 0180 E8 0000 E

22f,5 0190 E9 0000 E

2266

2261

2268

2269 0193 F4

2210 0194 EB FD

2211

2212

2213

2214 0196 Cl 06 0048 FFFF

2215

2216

2211

2218 019C C6 06 0040 93

2219

2280

2281

2282 OlAI Cf, Of, 004C 01

2283 01 .... 6 Cl 06 004 .... 0000

2284

2285 OlAC 80 IB

2286 01 ....E E6 80

2281

2288 0180 BB 0040

2289

2290

2291

2292 0183

2293 0183 6 .... 48

2294 0185 01

2295 0186 E8 0102 R

229f, 0189 14 03

2291 018B E9 0810 R

2298

2299 018E

2300 018E 83 C3 40

230 I

2302

2303

2304 01CI FE 06 004C

2305

2306

2301

2308 01C5 80 3E 004C 0 ....

2309 01C.... 15 El

2310 01CC E8 0840 R

2311 01CF E9 0810 R

2312

2313

2314

2315 0102

2316 0102 2B FF

2311 0104 B8 AA55

2318 0101 8B C8

2319 0109 26: 89 05

2320 010C BO OF

2321 01DE 26: 8B 05

2322 OlE 1 26: 89 05

2323 01E4 33 CI

2324 01E6 15 65

2325

2326 01E8 IE

2321 01E9 6 .... 18

2328 01EB IF

2329

2330

2331

2332 01EC 81 3E 0012 R 1234

2333 01F2 IF

2334 01F3 15 36

2335

2336

2331

2338 01F5 26: Cl 05 0101

MOV

C....LL

SP.POST SP

SYSINITT

MOV

OUT

AL.I ....H

MFG_PORT • AL

SET TEMPORARY STACK

CALL THE DESCRIPTOR TABLE BUILDER

.... ND REAL-TO-PROTECTED MODE SWITCHER

<><><><><><><><><><><><>

<><> CHECKPO I NT I A <><>

PUSH

POP

MOV

MOV

MOV

MOV

MOV

BYTE PTR GOT PTR as ­

OS t SS TEMP. BASE La WORD. a

SET (OS:) SELECTOR TO GOT SEGMENT

BYTE PTR OS; [SS-TEMP.B.... SE HI BYTEI.O

~~:~T_TEMP

-

SP.M.... X_SEG_LEN-2

;

;

;-----------------------------------------------------------------------------­

; TEST. 13

; PROTECTED MODE TEST ....NO MEMORY SIZE DETERMI NE

;

( 0 --> E>40K I

DESCRIPTION:

THIS ROUTINE RUNS IN PROTECTED MODE IN ORDER TO .... OORESS .... LL OF STORAGE.

[T CHECKS THE M....CHINE STATUS wORD IMSW) FOR PROTECTED MODE ....ND THE B.... SE

MEMORY SIZE IS DE TERM I NED .... ND S.... VED. 6 I T 4 OF THE CMOS 0 I .... GNOST I C

STATUS BYTE IS SET IF 512K --> 640K MEMORY IS INSTALLED.

OUR I NG .... POWER UP SEQUENCE THE MEMORY SIZE DETERM I NE I S DONE WITH

PL ....N....R ....ND 110 P....RITY CHECKS DIS ....BLED. DURING .... SOFT RESET THE MEMORY

SIZE DETERMINE WILL CHECK FOR P ....RITY ERRORS.

I NSURE PROTECTED MODE

SMSW

OB

TEST

JNZ

SHUT_8: MOV

C .... LL

JMP

AX

OOFH.OOIH.OEOH

.... X. V I RTU ....L EN ....BLE

VIR_OK

GET THE M....CHINE ST.... TUS WORD

....RE WE I N PROTECTED 1.40DE

~~or~~:~~OS_SHUT-DOWN+N~1 ~ND

PROC::SHUTDOWN

SEi

~~~T6~;NR~TURN

....DDRESS

: CAUSE A SHUTDOWN

V I RTU ....L 1.40DE ERROR HAL T

SHUT8: HLT

JMP SHUT8

64K SEGMENT LIMIT

; ERROR HALT

CPLO. D.... T ........ CCESS RIGHTS

MOV BYTE PTR OS: IES_TEMP.DATA_....CC_RIGHTS) .CPLO_D.... T .... _ACCESS

ST....RT WITH SEGMENT ....DDRESS 0[-0000 [SECOND 64K)

MOV

MOV

MOV

OUT

BYTE PTR OS: (ES TEMP.B .... SE HI BYTE) ,01H

DS:ES_TEMP.B.... SE=:LO_WORD.oR­

.... L.IBH

MFG_PORT .....L

BX.16"'4

<><> <> <> <> <> <> <> <> <> <><>

<><> CHECKPOINT IB <><>

, SET THE FIRST 64K DONE MOV

ST.... RT STOR....GE SIZE/CLEAR

NOT DONE:

PUSH

POP

C.... LL

JZ

JMP

NOT FIN:

.... 00

BYTE PTR ES TEMP

ES

HOW B[G

NOT-F I N

DONE

BX.16"'4

DO NEXT E>4K (OXOOOO I BLOCK

POINT ES TO D.... T ....

POINT TO SEGMENT TO TEST

DO THE FIRST 64K

CHECK I F TOP OF MEMORY

BUMP MEMORY COUNT BY E>4K

INC 8YTE PTR OS: (ES_TEMP.B.... SE_H I_BYTE I

CHECK FOR END OF FIRST 640K lEND OF B.... SE MEMORY)

CI.4P

.JNZ

CALL

.JMP

BYTE PTR DSI (ES TEMP.BASE HI BYTE) .O .... H

NOT DONE ,-GO-IF NOT

HOW-BI G END

DONE­

, GO SET MEMORY S I IE

: - - - - FILL/CHECK LOOP

HOW BIG:

SUB

MOV

MOV

MOV

MOV

MOV

MOV

XOR

JNZ

PUSH

PUSH

POP

01.01

AX.O ........ 55H

CX.AX

ES: [01] ..... X

....L.OFH

~~;T~n~!~

.... X.CX

HOW_BIG_END as

BYTE PTR RSD .... PTR as -

IS TH IS .... SOFT RESET

; TEST P ....TTERN

; SAVE P ....TTERN

I WRITE P ....TTERN TO MEMORY

; PUT SOMETH I NG IN ....L

I GET P .... TTERN

; INSURE NO P ....RITY I/O CHECK

; COMP.... RE P .... TTERNS

I GO END I F NO COMP....RE

POINT TO SYSTEM D.... TA .... RE ....

GET (OS: I eMP

POP

JNZ

ORE SET FL....G.1234H as

HOW_BI G_2

SOFT RESET

RESTORE OS

GO I F NOT SOFT RESET

I NSURE NO P....R I TV WITH P....R [TY BITS OFF

MOV WORD PTR ESl[ol],OIOIH I TURN OFF BOTH P....RITY BITS

TESTl 5-49

IBM Personal Compute,. NACRO Allllembl.,.

TESTI - - - 06/10/85

VersIon 2.00

POWER ON SELF TEST (POST)

2339

2340 01FA E4 61

2341 01FC OC OC

2342 01FE E6 6 I

2343 0800 24 F3

2344 0802 E6 6 I

2345 0804 6A FF

2346 0806 58

2347 0801 26: 8B 05

2348

2349 080A E4 6 I

2350 080C 24 CO

2351 060E 261 89 05

2352 0611 15 3A

2353

2354

2355

2356 Oel3 26: C7 05 FFFF

2351 oe I e 26: 8B 05

2358 oelB 50

2359 oelc E4 61

2360 081E 24 CO

2361 0820 26: 89 05

2362 0823 58

2363 0824 15 21

2364 0826 30 FFFF

2365 0829 15 22

2366

2361

2368

2369 082B

2310 082B 2B CO

231' 0820 B9 8000

2312 0830 F3/ AB

2313

2374 0832 IE

2375 0833 06

2376 0834 06

2317 0835 IF

2318 0836 B9 8000

2319 0839 2B F6

2380 083B F3/ AD

2381 0830 2B FF

2382 083F E4 6 I

2383 0841 24 CO

2384 0843 26: C1 05 0000

2385 0848 01

2386 0849 1 F

2381 084A 15 01

2388

2389 084C C3

2390

2391 0840

2392 0840 9C

2393 084E BO I C

2394 0850 E6 80

2395

2396

2391

2398 0852 B8 B383

2399 0855 E8 000 0 E

2400 0858 OC 60

2401 065A 81 FB 0200

2402 085E 11 02

2403 0860 24 7F

2404 0862

2405 0862 86 C4

2406 0864 E8 0000 E

2401

2408 0861 6A 18

2409 0869 IF

2410 086A 89 IE 0013 R

2411 086E 90

2412 086F C3

2413

2414

2415

2416

2411

2418

2419

2420

2421

2422

2423

2424

2425

2426 0810

2421 0810 6A 08

2426 0812 IF

2429

2430

2431

2432 0873 C6 06 004C 10

2433 0818 C1 06 004A 0000

2434

2435 087E BO 10

2436 0880 E6 80

2437

2438 0882 2B DB

2439

2440

2441

2442 0884

2443 0884 6A 48

2444 0886 01

2445 0881 E8 08A3 R

2446 088A 14 03

2447

2448 088C E9 092A R

2449

2450 088F 83 C3 40

2451

2452

1-23

06-10-85

IN

OR

OUT

AND

OUT

PUSH

POP

NOV

IN

AND

NOV

JN'

AL,PDRT B

AL, RAM PAR OFF

PORT B~AL

AL,RAM PAR ON

PORT B~AL

BYTE-PTR OFFH

AX

AX,ES: IDll

AL,PORT B

AL,PARITY ERR

ES: [01] ,AX

HOW_BI G_ENO

CHECK ALL BITS WRITE OK

NOV

NOV

PUSH

IN

AND

NOV

POP

JNZ

CNP

IN'

WORD PTR ES: [0 I ] ,OFFFFH

AX,ESdOl1

AX

AL.PORT B

AL.PARITy ERR

ES:[OI].AX

AX

HOW BIG END

AX ,OFFFFH

HOW_BIG_END

CHECK 64K BLOCK FOR PAR I TY CHECK

TOGGLE PARITY CHECK ENABLES

PLACE OFFFFH IN STACK (BUS BITS aNI

DELAY CAUSING BUS BITS ON

CHECK PARITY

CHECK FOR PLANAR OR 110 PAR I TY CHECK

CLEAR POSS I BLE PAR [TY ERROR

GO IF PLANAR OR [/0 PARITY CHECK

TURN ON ALL BITS

CHECK FOR FFFFH

SAVE RESULTS

CHECK FOR PLANAR OR ! /0 PAR [TY CHECK

CLEAR pass J BLE PAR J TY ERROR

GET RESULTS

GO 1 F PAR I TY CHECK

HOW BIG 2:

-SUB

NOV

REP

PUSH

PUSH

PUSH

POP

NOV

SUB

REP

SUB

IN

AND

NOV

POP

POP

JNZ

AX ,AX

CX,2000H*4

STOSW

OS

ES

ES

OS

CX,2000H*4

SI • S I

LODSW

OI,OJ

AL,PORT B

AL,PARITY ERR

WORD PTR ES:ID1},0

ES

OS

HOW_BIG_END

WR I TE ZEROS

SET COUNT FOR 321( WORDS

FILL 321( WORDS

I GET ES TO OS

SET COUNT FOR 32K WORDS

SET TO BEG I NN I NG OF BLOCK

CHECK FOR PLANAR OR 110 PAR I TY CHECK

CLEAR POSS IBLE PAR I TY ERROR

RESTORE SEGMENTS

I GO I F PLANAR OR I/O PAR I TY CHECK

RET

HOW BIG ENO:

-PUSHF

MOV

OUT

AL,ICH

MFG_PORT, AL

; SAVE

T~;<;~~~;~;<~~:~;<><><><>

<><> CHECKPOINT IC <><>

SET OR RESET 512 TO 640 INSTALLED FLAG

NOV

CALL

OR

CNP

JA

AND

AX ,X* (CMOS_I NFOI28+NNI)

CMOS READ

AL,M640K

BX,512

K640

AL, NOT M640K

SET IRESET 640K STATUS FLAG

GET THE DIAGNOSTIC STATUS

CHECK MEMORY SIZE

SET FLAG FOR 512 -> 640 INSTALLED

K640:

XCHG

CALL

PUSH

POP

MOV

POPF

RET

AL,AH

CMOS_WR I TE

BYTE PTR RSOA_PTR

OS

@MEMORY_SIZE,BX

SAVE THE S T A TUS

RESTORE THE STATUS

RESTORE THE DATA SEGMENT

SAVE MENORY SIZE

RESTORE THE FLAG REG I STER i - - - - - - - - - - - - - - - --­

I TEST. 13A

; PROTECTED MODE TEST AND MEMORY SIZE DETERMINE (ABOVE 10241( )

;

; DESCRIPTION:

THIS ROUTINE RUNS IN PROTECTED MODE IN OROER TO ADDRESS ABOVE 1 MEG.

THE NEMORY SIZE IS DETERMINED AND SAVED IN CMOS.

OUR I NG A POWER UP SEQUENCE THE MEMORY SIZE DETERM I NE I S DONE WITH

PLANAR AND I/O PAR I TY CHECKS 0 I SABLEO. OUR ING A SOFT RESET THE MEMORY

SIZE DETERM [NE W! LL CHECK FOR PAR I Ty ERRORS.

DONE:

PUSH

POP

BYTE PTR GOT PTR

OS ~ j PO I NT OS TO THE OESCR I PTOR TABLE

START WITH SEGMENT ADDRESS 10-0000 lONE MEG AND ABOVE)

MOV

MOV

MOV

OUT

BYTE PTR OS: (ES TEMP.BASE HI 8YTEI, 10H

OS: ES_ TEMP. BASE:LO_WORD, oR

AL,IOH

MFG_PORT ,AL

<> <><><><> <> <> <> <> <><><>

<> <> CHECKPO! NT

START WITH COUNT 0

10 <> <>

SUB BX,BX

START STORAGE SIZE/CLEAR

NOT DONE 1 :

PUSH

POP

CALL

JZ

BYTE PTR ES TEMP

ES ~

HOW BIGI

DONEA

DONE I JMP

OONEAr ADO

1----DO NEXT 64K (XXOOOO) BLOCK

POINT ES TO DATA

PO I NT TO SEGMENT TO TEST

DO THE FIRST 64K

CHECK I F TOP

IGOIFTOP

BUMP MEMORY COUNT BY 64K

5-50

TESTl

IBM Personal Computer MACRO Assembler Version 2 00

TESTI - - - 06/10/85 POWER ON SELF TEST (POSTI

2453

2454 0892 FE

2455

004C

2456

2457

2458 0896 80 3E 004C FE

2459 089B 75 E7

2460 0890 E8 09 I 7 R

2461 08AO E9 092A R

2462

2463

2464

2465 08A3

2466 08A3 28 FF

2467 08A5 88 AA55

2468 08A8 88 C8

2469 08AA 26: 89 05

2470 08AO BO OF

2471 08AF 26: 8805

2472 0882 26: 89 05

2473 0885 33 C I

2474 0887 75 5E

2475

2476

2477

2478 0889 IE

2479 088A 6A

2480 088C 1 F

2481 0880 81 3E 0072 R

2482 08C3 IF

2483 08C4 75 2F

2484

2485

2486

2487 08C6 26: C7 05 0101

2488 08C8 6A FF

2489 08CO 58

2490 08CE 26: 88 05

2491

24920801 E4 61

2493 0803 24 CO

2494 0805 26: 89 05

2495 0808 75 3D

2496

2497

2498

2499 080A 26: C7 05 FFFF

2500 080F 6A 00

250 I 08E 1 58

2502 08E2 26: 88 05

2503 08E5 50

2504 08E6 E4 61

2505 08E8 24 CO

2506 08EA 26: 89 05

2507 08EO 58

2508 08EE 75 27

2509 08FO 30 FFFF

2510 08F3 75 22

2511

2512

2513

2514 08F5

2515 08F5 28 CO

2516 08F7 89 8000

2517 08FA F3/ A8

2518

2519

2520

2521 08FC IE

2522 08FO 06

2523 08FE 06

2524 08FF IF

2525 0900 89 8000

2526 09"03 28 F6

2527 0905 F3/ AD

2528 0907 28 FF

2529 0909 E4

2530 0908 24

2531 0900 26:

2532 0912 07

2533 0913 IF

2534 0914 75

2535

2536 0916 C3

2537

05 0000

2538 0917

2539091780 IE

2540 0919 E6 80

2541

2542

2543

2544 0918 80 80

2545 0910 8A E3

2546 091F E8 0000 E

2547 0922 80 81

2548 0924 8A E7

2549 0926 E8 0000 E

2550 0929 C3

2551

2552

2553

2554 092A 80

2555 092C E6 80

2556 092E C6 06 004C 00

2557 0933 28 FF

2558 0935 8A FFFF

2559 0938 E8 0967 R

2560 093B 2B 02

2561

2562 0930 C6 06 004C 08

2563 0942 E8 0967 R

2564 0945 C6 06 004C 10

2565 094A E8 0967 R

2566 0940 C6 06 004C 20

1-24

06-10-85

INC BYTE PTR OS: IES TEMP.BASE_HI_BYTEI

CHECK FOR TOP OF MEMORY (FEOOOO) eMP

JNZ

CALL

J"P

BYTE PTR OS: (ES TEMP.BASE HI BYTE),OFEH

NOT DONE I -

HOW-B I G END I

DONE I ­

FILL / CHECK LOOP

HOW 8IGI:

SU8

"OY

"OY

MOY

MOY

MOY

MOY

XOR

JNZ

01,01

AX,OAA55H

CX,AX

ES: (OI],AX

AL,OFH

AX,ES: [01]

ES: [01 ],AX

AX,CX

HOW_BIG_ENDI

LAST OF MEMORy?

GO ! F NOT

GO SET MEMOR Y S! ZE

TEST PATTERN

SAVE PATTERN

SEND PATTERN TO MEMORY

PUT SOMETH I NG IN AL

GET PATTERN

INSURE NO PARITY I/O CHECK

COMPARE PATTERNS

GO END I F NO COMPARE

IS TH! S A SOFT RESET

PUSH

PUSH

POP e"p

POP

JNZ

OS

8YTE PTR RSOA PTR

OS

CtRESET FLAG, 1234H

OS

HOW_B I G_2A

POINT TO SYSTEM DATA AREA

SOFT RESET

RESTORE OS

GO I F NOT SOFT RESET

CHECK PARITY WITH PARITY 81TS OFF

MOY

PUSH

POP

MOY

IN

ANO

"OY

JNZ

WORD PTR ES:[Dlj,OIOIH

BYTE PTR OFFH

AX

AX,ES:

10

I]

AL,PORT 8

AL,PARITY ERR

ES:IOlj,AX

HOW_BIG_END I

TURN OFF BOTH PAR I TY BI TS

PLACE OFFFFH IN STACK (BUS 81TS ON)

DELAY CAUSING 8US 81TS ON

CHECK PAR I TY

CHECK FOR PLANAR OR I /0 PAR I TY CHECK

CLEAR POSS 18LE PAR I TY ERROR

GO IF PLANAR OR I/O PARITY CHECK

"OY

PUSH

POP

"OY

PUSH

IN

ANO

"OY

POP

JNZ eMP

JNZ

CHECK ALL 81 TS

WORD PTR ES: lo! J

,OFFFFH TURN ON ALL 81 TS

8YTE PTR 0

AX

AX ,ES:

AX

(011

PLACE OOOOOH IN STACK (BUS BITS OFF)

DELAY CAUSING BUS BITS OFF

CHECK FOR FFFFH

SAVE RESULTS

CHECK FOR PLANAR OR I/O PARITY CHECK AL,PORT 8

AL,PARITY ERR

ESI (Dt I,AX

AX

HOW BIG ENOl

AX,OFFFFH

HOW_BIG_ENDI

CLEAR POSSI8LE PARITY ERROR

GET RESULTS

GO I F PLANAR OR 1 /0 PAR I TY CHECK

CLEAR 64K 8LoeK OF MEMORY

HOW 81G 2A:

-SU8

MOY

REP

AX,AX eX,2000H"4

STOSW

; WR I TE ZEROS

; SET COUNT FOR 32K WORDS

; FILL 32K WORDS

CHECK 64K BLOCK FOR PARITY CHECK !VALID TEST DURING SOFT RESET ONLYI

PUSH

PUSH

PUSH

POP

"OY

SUB

REP

SUB

IN

ANO

MOY

POP

POP

JNZ

RET

OS

ES

ES

OS

CX,2000H"4

SI,SI

LOOSW

01,01

AL,PORT B

AL,PARITY ERR

WORD PTR ES:[Oll,O

ES

OS

HOW_B! G END I

GET ES TO OS

SET COUNT FOR 32K WORDS

SET TO 8EG I NN I NG OF BLOCK

CHECK FOR PLANAR OR I/O PARITY CHECK

CLEAR POSS I BLE PAR I TY ERROR

RESTORE SEGMENT

GO IF PLANAR OR I/O PARITY CHECK

HOW 81G ENOl:

-1010'1

OUT

AL, I EH

MFG_PORT ,AL

<> <> <> <> <> <> <> <> <> <> <> <>

<><> CHECKPOINT IE <><>

SET EXPANSION MEMORY SIZE DETERMINED

MOY

MOY

CALL

MOY

MOY

CALL

RET

AL,CMOS U lot S LO+NMI

AH,8L -

CMOS WR! TE

AL,CMOS U 101 S HI+NMI

AH,BH -

CMOS_WR I TE

ADDRESS LOW BYTE

GET LOW MEMORY SIZE

SET LOW BYTE

ADDRESS HI BYTE

GET THE HIGH MEMORY SIZE

PLACE IN CMOS

TEST ADDRESS LINES 19

DONE I: 1010'1

OUT

MOY

SUB

"OY

CALL

SUB

1010'1

CALL

1010'1

CALL

1010'1

AL,IFH

MFG PORT,AL

<><><><><><><><><><><><>

, < > < > CHECKPOINT IF <><>

BYTE PTR OS: (ES TEMP. BASE HI BYTE I ,OOH

01,01

OX , OFFFFH

,-SET LOCATION POINTER TO ZERO

; WR r

TE FFFF AT ADDRESS 0

500

DX,DX : WRITE a

8YTE PTR

SOO os:

(ES TEMP.8ASE HI BYTE) ,08H

­

BYTE PTR OS: (ES TEMP.BASE HI BYTEI,IOH

SOO

BYTE PTR

­ os:

IES_TEMP.BASE_HI_BYTE),20H

TEST1 5-51

IBM Personal Computer MACRO Assembler VersIon 2.00

TEST! - - - 06/10/85 POWER ON SELF TEST (POST)

1-25

06-10-85

2561 0952 E8 0967 R

2568 0955 C6 06 004C 40

2569 095A E8 0967 R

2510 0950 C6 06 004C 80

2511 0962 E6 0967 R

2512

2513 0965 E8 16

2514

2575 0967

2576 0961 6A 46

2571 0969 07

2576 096.40 26: 69

2579

2560 0960 C6 06 004C 00

2561

2562 0972 6.40 48

2583 0974 07

2564 0915 26: 83 3D FF

2585 0979 74 03

2566 091B E9 076A R

2587 091E

2568 091E C3

2589

2590

2591

2592 091F BO 20

2593 0981 E6 80

2594 0963 E4 61

2595 0965 OC OC

2596 0987 E6 61

2597 0989 24 F3

2598 098B E6 61

2599 0980 E9 0000 E

2600

2601

2602

2603

2604

2605 0990 80 21

2606 0992 E6 80

2607 0994 8C ---- R

2608 0997 8E 04

2609 0999 8C 0400 R

2610

2611

2612

2613 099C 28 FF

2614 099E 8E C1

2615 09AO 88 0000 E

2& 16 09A3 A8

2617

2618 09A4 E8 0000 E

2619

2620

2621

2622 09A 1 88 8E8E

2623 09AA E8 0000 E

2624 09AO A8 CO

2625 09AF 14 03

2626 0981 E9 OA3" R

2627 0984

2626 09B4 24 OF

2629 09B6 86 C4

2030 0988 E6 0000 E

2631

2632

2633

2634 0988 81 3E 0072 R 1234

2635 09CI 14 10

2636

2631 09C3 BO 96

2638 09C5 E8 0000 E

2639 09C8 24 CO

2640 09C" 3C CO

2641 09CC 75 05

26.042

26.043 09CE C6 06 0072 R 64

2644

26.045

2046

2641 0903

2648 0903 BO 94

2&49 0905 E8 OOCO E

2&50 0906 8.40 EO

2&51 090A A8 30

2652 090C 15 31

2&53 090E E8 09EC R

2&54 09E 1 74 4C

2655

2656 09E3 F6 06 0012 R 20

2651 09E8 14 6F

2656

2659 09EA E8 4E

2660

2661

2662

2663 09EC

2664 09EC 89 COO 0

2665 09EF

2666 09EF 50

2667 09FO IE

2668 09F 1 57

2669 09F2 8E D9

2670 09F4 8F AA55

2671 09F7 28 DB

2672 09F9 8B 07

2673 09FB 38 C7

2674 09FO 5F

2675 09FE IF

2676 09FF 58

2617 OAOO 74 OC

2678

2679 OA02 81 Cl 0080

2680 OA06 81 F9 C600

CALL

MOV

CALL

MOV

CALL

SOO

BYTE PTR OS: jES TEMP.BASE HI BYTE) ,40H

500 -

BYTE PTR OS: (ES TEMP.BASE HI BYTE) ,80H

500 -

JMP SHORT S02 I TEST PASSED CONTINUE

500:

501 :

PUSH

POP

MOV

MOV

PUSH

POP eMP

JZ

JMP

RET

BYTE PTR ES TEMP

ES -

ESa (01] ,OX

POINT ES TO DATA

POINT TO SEGMENT TO TEST

WRITE THE PATTERN

BYTE PTR OS: IES_TEMP.8ASE_Hl_BYTE) ,OOH

BYTE PTR ES TEMP

ES -

WORD PTR

501

ES: (01

POINT ES TO DATA

POINT TO SEGMENT TO TEST

J

,OFFFFH DID LOCATION a

CHANGE?

CONT I NUE I F NOT

SHUT_8 GO HALT I F YES

,- - CAUSE A SHUTDOWN

502: MOV AL.20H

MFG PORT ,AL OUT

IN

OR

OUT

AL,PORT B

AL ,RAM PAR OFF

PORT

B~AL

AND

OUT

JMP

AL,RAM PAR ON

~~~6:~~~~0~.N

,----

- - ---

-

---

---------

- - ------------- --­

; RETURN I FROM SHUTDOWN :

<><><><><><><> <> <><><><>

<><> CHECKPOINT 20 <><>

TOGGLE PAR I TY CHECK ENABLES

CAUSE A SHUTDOWN (RETURN V I A .JUMP)

SHUT I I MOV

OUT

MOV

MOV

MOV

AL,21H

MFG PORT ,AL

SP, ABSO

SS,SP

SP,OFFSET _TOS

SET 0 I V I DE 0 VECTOR OFFSET

<> <> <> <><><><><><><> <><>

<> <> CHECKPO I NT 21 <><>

SET REAL MODE STACK

SUB

MOV

MOV

STOSW

01,01

ES.DI

AX,OFFSET 01 j

CALL ODS

GET THE CONF I GURA TI ON FROM CMOS

POINT TO FIRST INTERRUPT LOCATION

SET ES TO ABSO SEGMENT

GET ADDRESS OF I NTERRUPT OFFSET

PLACE OFFSET IF NULL HANDLER IN VECTOR

SET UP THE REAL DATA AREA

MOV

CALL

TEST

JZ

JMP

AND

XCHG

CALL

AX,X"ICMOS DIAG+NMI)

CMOS READ -

AL,8Ab BAT+8AO CKSUM

M OK -

BAD_MOS

AL.ODFH

AL,AH

CMOS_WRITE

CHECK FOR CMOS RUN I N MODE eMP

JE

MOV

CALL

AND eMP

JNE

MOV

CHECK CMOS GOOD

GET THE STATUS

VALID CMOS?

GO I F YES

GO IF NOT

CLEAR THE MINIMUM CONFIG 8IT

SAVE THE STATUS BYTE

BACK I NTO CMOS

_RESET FLAG

I

1234H

M_OK_64

CHECK FOR SOFT RESET

BYPASS I F SOFT RESET

AL,CMOS B M S HI+NMI

CMOS REAO- -

AL.OCOH

AL,OCOH

M_OK_64

GET THE BASE MEMORY SizE HIGH BYTE

MASK FOR MANUFACTURING TEST 81TS

CHECK FOR MANUFACTURING TEST MODE SET

SK I P I F NOT MANUF ACTUR I NG LINE TEST

BYTE PTR <PRESET_FLAG.64H; ELSE SET THE MFG TEST FLAG

INSURE CONFIGURATION HAS CORRECT VIDEO TYPE

M OK 64:

MOV

CALL

MOV

TEST

JNZ

CALL

JZ

TEST

JZ

AL,CMOS EQUIP+NMJ

CMOS READ

AH,A[

AL , 030H

MOS OK 1

CHK-V IDEO

MOS:OK

_MFG TST ,MFG LOOP

NORMAL _ CONF I G

I GET THE EQU I PMENT BYTE

SAVE VIDEO TYPE

ANY VIDEO?

CONT I NUE

I NSURE V IDEO ROM PRESENT

CONTINUE

EXCEPT IF MFG .JUMPER IS INSTALLED

GO IF INSTALLED

JMP SHORT BAo_MOS GO DEFAULT

ROUTINE CHECK FOR VIDEO FEATURE ROM PRESENT ; - - - - -

CHK VIDEO:

MOV

CHK VIDEOI:

PUSH

PUSH

PUSH

MOV

MOV

SUB

MOV eMP

POP

POP

POP

JZ

ADO eMP

CX,OCOOOH

AX

OS

01

OS,CX

DI.OAA55H

BX,ex

AX, [BX)

AX,DI

D1

OS

AX

CHK_VIDE02

CX,060H

CX,OC600H

START OF FEATURE 1/0 ROM

SAVE THE CONFIGURATION

SAVE THE DATA SEGMENT

SAVE COMPARE REGISTER

GET ROM SEGMENT

GET THE PRESENCE SIGNATURE

CLEAR I NOEX PO INTER

(jET THE FIRST 2 LOC'ATIONS

IS THE VIDEO FEATURE ROM PRESENT?

RESTORE WORK REG I STER

RESTORE DATA SEGMENT

GET THE CONF I GURAT J ON

GO IF VIDEO ROM INSTALLED

PO I NT TO NEXT 2K BLOCK

TOP OF VIDEO ROM AREA YET?

5-52

TESTl

IBM Personal Computer MACRO A>I>lembler

TESTI ~--~ 06/10/85 POWER ON

Ver>l,on 2.00

SELF TEST IPOST)

I ~26

06-1 0~85

2768

2769

2770

2771

2772

2773

2774

2775

2776

2777

2778

2779

2750

2751

2752

2753

2754

2755

2756

2757

2758

2759

2760

2761

2762

2763

2764

2765

2766

2767

2780

2781

2782

2783

2784

2785

2786

2787

2788

2789

2790

2791

2792

2793

2794

2733

2734

2735

2736

2737

2738

2739

2140

2741

2742

2743

2144

2145

2746

2747

2148

2149

2717

2718

2719

2720

2721

2722

2723

2724

2725

2726

2727

2728

2729

2730

2731

2732

2702

2703

2704

2705

2706

2707

2708

2709

2710

2711

2712

2713

2714

2715

2716

2681

2682

2683

2684

2685

2686

2687

2688

2689

2690

2691

2692

2693

2694

2695

2696

2697

2698

2699

2700

2701

OAOA

OAoe

OAOE

OAOE

OAOF

OAOF

OA 12

OA 14

OAI6

OAIB

OA I 0

OAIF

OA21

OA23

OA25

OA27

OA27

OA29

OA2B

OA2D

OA2F

OA31

OA33

OA38

OA3A

OA3A

OA30

OA40

OA42

OA44

OA47

OA47

OA4A

OA4C

OA4E

OA53

OA55

OA57

OA59

OA59

OA5E

OA60

OA62

OA64

OA67

OA6D

OA6F

OA71

OA74

OA 16

OA78

OA7A

OA 70

OA80

OA82

OA84

OA86

OA87

OA89

OA8C

OA8D

OA8F

OA91

OA94

OA96

OA98

7C E3

23 C9

C3

E8 09EC R

74 26

8A C4

FlO 06 0012 R 40

74 OA

24 30

3C 30

75 17

8A C4

EB 08

24 30

3C 30

8A C4

74 OB

A8 01

1526

F6 06 0012 R 20

14 IF

B8 008E

E8 0000 E

A8 CO

75 03

E8 0000 E

E8 09EC R

BO 01

74 OB

F6 06 0012 R 40

BO I I

14

BO 31

FlO 06 0012 R 20

75 02

24 3E

2A E4

A3 00 lOR

81

74 2C

BO 60

E8 0396 R

BO 40

E6 60

2B C9

E8 039B R

B9 7FFF

E4 64

A8 01

EI FA

9C

02

3E 0072 R 1234

BO AD

E8 0396 R

90

74 OC

E4 60

A2 0072 R

3C 65

75 03

E9 OC27 R eL

AND

V [DE02:

RET

- - - -

CHK VIDEOI

CX,CX

; TRY AGAIN

; SET NON ZERO FLAG

: RETURN TO CALLER

CMOS VIDEO BITS NON ZERO (CHECK FOR PRIMARY DISPLAY AND NO VIDEO ROM)

MOS OK 1:

~ ~ CALL or

MOV

TEST

JZ

CHK VIDEO

BAO::::MOS

AL,AH

CtMFG TST ,DSP JMP

MOS_OK_2-

MONOCHROME CARD IS PRIMARY DISPLAY

[S THE VIDEO ROM [NSTALLED?

WRONG CONFIGURAT[ON IN CONF[G BYTE

RESTORE CONF I GURAT I ON

CHECK FOR 0 I SPLA Y JUMPER

GO I F COLOR CARD IS PR I MARY 0 I !>PLA Y lNO JUMPER INSTALLEDI

AND e"p eNZ

MOV e"p

AL,30H

AL,30H

BAD MOS

AL,AH

SHORT MOS_OK

COLOR CARD

I NSURE MONOCHROME IS PR I MARY

CONFIGURATION OK?

GO IF NOT

RESTORE CONFIGURATION

USE THE CONFIGURATION BYTE FOR DISPLAY

MOS_OK~2:

AND eMP

"OV ez

AL,30H

AL,30H

AL,AH

BAD t.40S

STRIP UNWANTED BITS

MUST NOT BE MONO W[TH JUMPER INSTALLED

RESTORE CONF I GURA T I ON

GO IF YES

CONF I GURAT I ON MUST HAVE AT LEAST ONE 0 I SKETTE

MOS_OK: TEST eNZ

TEST ez

AL,OIH

NORMAL CONF I G

PMFG TST, MFG LOOP

NORMAL_CONF IG

; MUST HAVE AT LEAST ONE DI SKETTE

; GO SET CONF I GURAT I ON I F OK

; EXCEPT [F MFG JUMPER I S I NST ALLEO

; GO IF INSTALLED

MINIt.4UM CONFIGURATION WITH BAD CMOS OR NON VALID VIDEO

BAD t.40S:

MOV

CALL

TEST eNZ

CALL

BAD MOS I :

CALL

"OV ez

AX. Ct.40S 0 I AG+Nt.41

CMOS READ

Al,BAD BAT+BAO CKSUM

BAD t.4051 -

CONF I G BAD

CHK VIDEO

Al,OIH

NORt.4AL_CONFIG

; GET THE DIAGNOSTIC STATUS

WAS BATTERY DEFECTI VE OR BAD CHECKSUM

GO IF YES

SET THE t.4INIt.4Ut.4 CONFIGURATION FLAG

I CHECK FOR V IDEO ROM

DISKETTE ONlY

GO I F V IDEO ROt.4 PRESENT

TEST

"OV ez

Pt.4FG TST,DSP Jt.4P

AL,IIH

NORt.4AL CONF I G

CHECK FOR 0 I SPLA Y JUMPER

DEFAULT TO 40X25 COLOR

GO [F JUt.4PER IS INSTALLED

"OV AL,31H

;

~ ~ ~~~~~~~~~~~~~~ ~ ~ ~- -~~~~~ ~ ~

- - - - - - - - - - -­

; CONFIGURATION AND MFG t.4DDE

;

-----------------------~---------------

01 SKETTE / B/W 01 SPLAY 80X25

NORt.4AL CONF I G:

TEST

JNZ

AND

NORt.41: SUB

"OV eMP ez

Ctt.4FG TST, MFG LOOP

NORMI

AL,03EH

AH,AH

PEQUIP FLAG,A~

PRESET-FLAG,1234H

E6

I S THE MANUF ACTUR I NG JUt.4PER I NST ALLED

GO IF NOT

STRIP DISKETTE FOR t.4FG TEST

I SAVE SWITCH INFORMATION

BYPASS I F SOFT RESET

GET THE F [RST SELF TEST RESUlTS FROM KEYBOARD

TSTb:

"OV

CALL

"OV

OUT

SUB

CALL

"OV

IN

TEST

LOQPZ

PUSHF

MOV

CALl

PDPF

JZ

IN

MOV

AL,WRITE 8042 LOC

C8042 -

AL,4DH

PORT_A,AL

CX,CX

C42_1

CX,07FFFH

AL, STATUS PORT

AL, OUT BUF FULL

TST6 -

AL, DIS KBD

C8042

E6

AL, PORT A

BYTE PTR CtRESET FLAG,AL

CHECK FOR MFG REQUEST e"F eNE e"p

AL,065H

E6

MFG BOOT

ENABLE KEYBOARD

ISSUE WR I TE BYTE COMMAND

ENABLE OUTPUT BUFFER FULL INTERRUPT,

SET SYSTEt.4 FLAG, PC I COMPATIBILITY,

I NH I B [T OVERR [DE, ENABLE KEYBOARD

WA I T FOR COMMAND ACCEPTED

SET LOOP COUNT FOR APPROXIMATELY lOOMS

TO RESPOND

WA IT FOR OUTPUT BUFFER FULL

TRY AGAIN IF NOT

SAVE FLAGS

DISABLE KEYBOARD

I SSUE THE COMMAND

RESTORE FLAGS

CONTINUE WITHOUT RESULTS

GET [NPUT FROM KEYBOARD

TEMPORARY SAVE FOR AA RECEIVED lOAD MANUFACTURING TEST REQUEST7

CONT I NUE I F NOT

ELSE GO TO MANUFACTURING BOOTSTRAP

TEST. [4

INITIALIZE AND START CRT CONTROLLER (6845)

TEST VIDEO READ/WRITE STORAGE.

OESCR [PTI ON

RESET THE V[OEO ENABLE SIGNAL.

SELECT ALPHANUMER I C MODE, 40 • 25, B & II.

READ/ WR I TE DATA PATTERNS TO MEt.40RY. CHECK

STORAGE ADORESSAB I L I TY.

ERROR :: 1 LONG AND 2 SHORT BEEPS

TESTl

5-53

IBM P.r.!lo"al COlliput.r MACRO A.!I.!Iembler Ver.lo" 2.00

TEST! - - - 06/10/85 POWER ON SELF TEST (POST!

2842 OAF3 B7 88

2843 OAF5 BA 0308

2844 OAF8 B5 20

2845 OAFA

2846 OAFA AO 0065 R

2847 OAFD 24 37

2848 OAFF EE

2849 OBOO 8E C3

2850 OB02 8E DB

2651 OB04 0 I C9

2652 OB06 E8 0000 E

2653 OB09 75 70

2854

2855

2856

2857

2858

2859

2860

2861

2862

2863

2864 0808 80 22

2865 0800 E6 80

2866

2867 oeOF 58

2868 OBIO 50

2869 OBII B4 00

2870 OB13 CO 10

2871 OBIS B8 7020

2872 OBI8 2B FF

2873 OB I A B9 0028

2814 OBIO F31 AB

2875

2876

2877

2818

2819

2880

2881

2882

2883

2884

2885 081F 58

2886 OB20 50

2881 OB21 80 FC 30

2888 0824 BA 03BA

2889 OB21 14 03

2890 OB29 BA 030A

2891 OB2C

2892 OB2C B4 08

2893 OB2E

2894 OB2E 2B C9

2895 0830

2896 0830 EC

2891 OB31 22 C4

2898 OB33 75 04

2899 OB35 E2 F9

2900 OB37 EB 42

290 I OB39

2902 0839 2B C9

2903 OB3B

2904 OB3B EC

2905 OB3C 22 C4

2906 OB3E 14 04

2907 OB40 E2 F9

2906 OB42 EB 37

2795

2796

2797 OA98

2798 OA98 AI 0010 R

2799 OA9E 50

2800 OA9F BO 30

2801 OAAI A3 0010 R

2802 OAA4 2B CO

2803 OAA6 CO 10

2804 OAAa 80 20

2805 OAAA A3 0010 R

2806 OAAO 88 0003

2807 OA80 CO 10

2808 OA82 B8 000 I

2809 OA85 CO 10

2810 OA87 58

2811 OAB8 A3 0010 R

2812 OABB 24 30

2813 OABO 75 II

2814 OABF IE

2815 OACO 50

2816 OAC I 2B CO

2817 OAC3 8E 08

2818 OAC5 BF 0040 R

2819 OAC8 C7 05 0000 E

2820 OACC 58

2821 OACD IF

2822 OACE EB 7F

2823 OADO

2824 OADO 3C 30

2825 OA02 74 08

2826 OAD4 FE C4

2827 OAD6 3C 20

2828 OAD8 75 02

2829 OADA 84 03

2830 OADC

2831 OADC 86 EO

2832 DADE 50

2833 OADF 2A E4

2834 OAE I CO 10

2835 OAE3 58

2836 OAE4 50

2837 OAE5 BB BOOO

2638 OAE8 BA 03B8

2839 OAES 89 0800

2840 OAEE 80 FC 30

2841 OAFI 74 07

1-27

06-10-85

E6:

MOV

PUSH

MOV

MOV

SUB

INT

MOV

MOV

MOV

INT

MOV

INT

POP

MOV

ANa

JNZ

PUSH

PUSH

SUB

MOV

MOV

MOV

POP

POP

"MP

AX,etEQUIP FLAG

AX -

AL,30H

II'EQUIP FLAG.AX

AX.AX -

INT v [DEO

AL.~OH

OEQUIP FLAG.AX

AX.0003H

INT VIDEO

AX.OOOIH

INT VIDEO

AX -

:E~~6~_FLAG.AX

GET SENSE I NFORMAT I ON

SAVE 1 T

FORCE MONOCHROME TYPE

INTO EQUIPMENT FLAG

MODE SET COMMAND FOR DEF AUL T MODE

SEND INITIALIZATION TO B/W CARD

FORCE COLOR AT 80 BY 25

INTO EQU I PMENT FLAG TO CLEAR BUFFERS

AND INITIALIZATION COLOR CARD 80X25

MODE SET 80 X 25

SET COLOR 40 X 25 MODE

SET DEF AUL T COLOR MODE

RECOVER REAL SWITCH INFORMATION

RESTORE [T

I SOLATE V IDEO SW ITCHES

VIDEO SWITCHES SET TO O?

SAVE THE DATA SEGMENT

E1 as

AX

AX,AX

OS,AX

SET DATA SEGMENT TO 0

~6RgF~*~T [~~

J

~~~F~~i OUM~Y S~~T~~~ER~U~~T~~~ ~~ ~~M~T

DEO CARD

RESTORE REGI STERS AX as

SHORT EI8_1 8YPASS YIDEO TEST

E1:

CMP

"E

INC

CMP

.lNE

MOV

AL.30H

E8

AH

AL,20H

E8

AH,3

8/W CARD ATTACHED'?

YES SET MODE FOR 8/W CARD

SET COLOR MODE FOR COLOR CARD

80X25 MODE SELECTED '?

NO SET MODE FOR 40X25

SET MODE FOR 80X25

E8:

XCHG

PUSH

SUB

INT

POP

PUSH

MOV

MOV

"OV

CMP

JE

MOV

MOV

MaV

AH,AL

AX

AH,AH

INT VIDEO

AX -

AX

BX,08000H

OX,388H

CX.2048

AH.30H

E.

BH,088H

DX,3D8H

CH,20H

SAVE V IDEO MODE ON STACK

INITIALIZE TO ALPHANUMERIC MD

CALL VIDEO 10

RESTORE VIDEO SENSE SWITCHES IN AH

SAVE VALUE

STARTING VIDEO MEMORY ADDRESS B/W CARD

MODE REGISTER FOR B/W

MEMORY WORD COUNT FOR 8/W CARD

B/W VIDEO CARD ATTACHED'?

YES GO TEST VIDEO STORAGE

START! NG MEMORY ADDRESS FOR COLOR CARD

MODE REG I STER FOR COLOR CARD

MEMORY WORD COUNT FOR COLOR CARD

E9:

MaV

AND

OUT

MOV

MOV

ROR

CALL

JNE

AL.OCRT MODE SET

AL.031H-

DX,AL

ES,BX

OS,BX

CX,I

STGTST CNT

EI7 -

GET CURRENT MODE SET VALUE

SET VIDEO BIT OFF

DI SABLE V IDEO FOR COLOR CARD

PO [NT ES TO V IDEO MEMORY

PO I NT OS TO V IDEO MEMORY o

I V I DE BY 2 FOR WORD COUNT

GO TEST VIDEO READ/WRITE STORAGE

R I W MEMORY FA I LURE BEEP SPEAKER

I

: -

------ --

; TEST.15

-

-- - - - ------ ------------ - ----- - - - - - - -­

SETUP VIDEO DATA ON SCREEN FOR VIDEO

LINE TEST.

DESCRIPTION

;

-

ENABLE VIDEO SIGNAL AND SET MODE.

DISPLAY A HORIZONTAL BAR ON SCREEN. -------------

---

-

- - - - - - - - - - - - - - -

------

- - -- - ---­

MOV

OUT

AL,22H

MFG_PORT ,AL

<> <> <> <><><> <> <> <><><><>

<> <> CHECKPO I NT 22 <> <>

POP

PUSH

MOV

INT

MOV

SUB

MOV

REP

AX

AX

AH,O

INT VIDEO

AX.1020H

01,01

CX,40

STOSW

;

----

- - - - - - ------- -

----------------­

; TEST.16

; CRT INTERFACE LINES TEST

: DESCRIPTION

SENSE ON/OFF TRANSITION OF THE

V I DEO ENABLE AND HOR I ZONT AL

SYNC LINES.

GET VIDEO SENSE SWITCHES !AHI

SAVE IT

ENABLE V IDEO AND SET MODE

VIDEO

WRITE BLANKS IN REVERSE VIDEO

SETUP START I NG LOCAT I ON

NUMBER OF BLANKS TO 0 I SPLA Y

WR I TE V IDEO STORAGE

Ell:

E12:

E13:

E14:

E15:

POP

PUSH eMp

MOV

JE

MOV

MOV

SUB

IN

ANa

"NZ

LOOP

JMP

SUB

IN

ANa

JZ

LOOP

JMP

AX

AX

AH,30H

DX,03BAH

Ell

OX,03DAH

AH,8 cX,ex

AL,DX

AL,AH

EI'

E13

SHORT EI1 cX,ex

AL,DX

AL,AH

E16

EI5

SHORT E 11

GET VIDEO SENSE SW ITCH INFORMATION

SAVE IT

8/W CARD ATTACHED'?

SETUP ADDRESS OF 8/W STATUS PORT

YES GO TEST LINES

COLOR CARD IS ATTACHED

READ CRT STATUS PORT

CHECK VIDEO/HORIZONTAL LINE

ITS ON CHECK IF I T GOES OFF

LOOP UNT I L ON DR TIMEOUT

GO PRINT ERROR MESSAGE

READ CRT STATUS PORT

CHECK V[OEO/HORIZONTAL LINE

I TS ON CHECK NEXT LI NE

LOOP IF ON UNTIL IT GOES OFF

GO ERROR 8EEP

5-54

TESTl

IBM Personal Computer MACRO Assembler

TEST 1 ---06/10/85

Version 2.00

POWER ON SELF TEST (POST]

1-28

06-10-65

2909

2910

2911

2912 0844 81 03

2913 0846 D2 EC

2914 0848 15 E4

2915 084A

2916 084A 58

291 1 084B B4 00

2918 OB4D CD 10

2919

2920

2921

2922 084F SA COOO

2923 0852

2924 0852 80 23

2925 0854 E6 80

2926 OB56 8E DA

2927 OB58 57

2928 0859 8F AA5S

2929 OBSC 28 08

2930 08SE 88 07

2931 0860 38 C7

2932 0862 5F

2933 OB63 75 05

2934

2935 0865 E8 0000 E

2936 0868 EB 04

2937 086A

2936 086A 81 C2 0060

2939 OB6E

2940 OB6E 81 FA CBOO

2941 0872 7C DE

2942

2943 0874 80 24

2944 OB76 E6 80

2945

2946 0816 E9 0000 E

2947

2946

2949

2950

2951 OB78 E8 0000 E

2952

2953

2954

2955 OB7E C6 06 00 15 R OC

2956 OB83 80 3E 0012 R 64

2951 OB88 14 00

2958 OB8A F6 06 0012 R 20

2959 OBaF 14 06

2960 0891 BA a

I 02

2961 OB94 E8 0000 E

2962 OB91

2963 OB97 IE

2964 OB98 A' 00 lOR

2965 0898 24 30

..

~ 2966 OB9D 3C 30

2961 089F 74 30

2968

2969

2970

2971 08AI C6 06 0015 R 00

2972

2973 OBA6 BA 0388

2974 OBA9 80 0 I

2975 OBAB EE

2976 08AC 88 BOOO

2917 OBAF 8E DB

2978 OBBI 88 AA55

2919 OB84 28 DB

2960 OB86 89 07

2981 OBB8 EB 00

2982 OBBA 68 01

2983 OBBC 3D AA55

2984 08BF IF

2985 OBCO 15 55

2986 OBC2 81 OE 0010 R 0030

2987 08C8 AI 0010 R

2988 OBCB 2A E4

2989 OBCO CD 10

2990 08CF EB 34

2991

2992

2993

2994 080 \

2995 aBO I 80 a I

2996 0803 2A E4

2991 0805 CD 10

2996 0807 8A 0308

2999 OBoA 80 00

3000 080c EE

3001 0800 88 8800

3002 08EO 8E 08

3003 08E2 88 AA55

3004 OBE5 28 DB

3005 aBEl 89 01

3006 OBE9 EB 00

3001 OBEB 158 07

3008 aBED 3D AA55

3009 OBFO IF

30 1 0 08F I 75 24

30 I I OBF3 81 26 00 lOR FFCF

3012 OBF9 81 OE 0010 R 0010

3013 oeFF eo 01

3014 OCOI 2A E4

3015 OC03 CD 10

3016 OC05

3017 OC05 58

3018 OC06 AI 0010 R

3019 OC09 24 30

3020 aCOB 3C 30

3021 OCOD 2A CO

3022 OCOF 74 02

; - - - - -

E16:

E18:

CHECK HORIZONTAL LINE

"OV

SHR

"NZ

POP

"OV

INT

CL,3

AH,CL

EI2

GET NEXT 81T TO CHECK

I CONT INUE

GET VIDEO SENSE SWITCHES (AHI

SET MODE AND 0 I SPLA Y CURSOR

CALL VIDEO 1/0 PROCEDURE

CHECK FOR THE ADVANCED V IDEO CARD

EI6 II

EI8A:

"OV

"OV

OUT

"OV

PUSH

"OV sus

"OV

COP

POP

"NZ oX ,nCOOOH

AL,23H

MFG_PORT, AL

OS,DX

DI

Ol,OAA55H

BX,8X

AX, (BX)

AX,DI

01

EI68

SET THE LOW SEGMENT VALUE

<> <> <> <><> <><> <> <> <> <> <>

<><> CHECKPO I NT 23 <><>

SAVE WORK REG I S TER

PRESENCE SIGNATURE

CLEAR POINTER

GET FIRST 2 LOCATIONS

PRESENT?

RECOVER REG I S TER

NO? GO LOOK FOR OTHER MODULES

EI8BI

EI8C:

CALL

""P

ADD

COP

"L

"OV

OUT

ROM CHECK

SHORT EI8C ox,

0080H

OX,OCBOOH

EI8A

AL,24H

MFG_PORT

I

AL

GO SCAN MODULE

I POINT TO NEXT 2K BLOCK

TOP OF VIDEO ROM AREA YET?

GO SCAN FOR ANOTHER MODULE

<><><><><><><><><><><><>

<><> CHECKPO I NT 24 <><>

POST2 GO TO NEXT TEST

""P

CRT ERROR SET MFG CHECKPO I NT AND ERROR 8EEP

E17: CALL DDS ; POINT TO DATA

1----CHECKPOINT OC

=

MONOCHROME FAILED

E19:

"OV

COP

"Z

TEST

"Z

"OV

CALL

PUSH

MOV

AND

COP

"Z os

:~:;~~UIP

_FLAG

AL,30H

TRY_COLOR

GET THE CURRENT

STRIP OTHER BITS v

IDEO

I SIT MONOCHROME ?

GO IF YES

COLOR FAILED TRY MONOCHROME CHECKPOINT 00

=

COLOR FAILED

"OV

.MFG ERR FLAG,OCH ; <><> CRT ERROR CHECKPOINT

8YTE-PTR-CiRESET FLAG,064H ; IS THIS A MFG REQUEST?

OC <><>

E 19 -

.MFG TST ,MFG LOOP

E 19 -

; BY PASS ERROR SEEP I F YES

; I S THE MFG LOOP .JUMPER INSTALLED?

; BY PASS ERROR BEEP IF YES

OX, 102H

ERR_BEEP , GO BEEP SPEAKER

ClMFG_ERR_FLAG,OOH <><> CRT ERROR CHECKPOINT 00 <><>

"OV

"OV

OUT

MOV

"OV

"OV sus

"OV

""P

"OV

COP

POP

"NZ

OR

"OV sus

INT

""P

OX,388H

AL,I

OX,AL

BX,OBOOOH

OS,8X

AX,OAA55H

8X , 8X

[BX) ,AX '.2

AX, [BX)

AX,OAA55H os

E 17 3

OEQU I P FLAG

I

30H

AX,.EQUIP FLAG

AH,AH

INT VIDEO

SHORT Ell I

MONOCHROME FA I LEO TRY COLOR

I DISABLE BfW

OUTPUT THE 0 I SABLE

CHECK FOR MONOCHROME v

IDEO MEMORY

WRITE AN AA55

TO THE FIRST LOCATION

I ALLOW BUS TO SETTLE

; READ THE FIRST LOCATiON

; IS THE MONOCHROME VIDEO CARD THERE?

I RESTORE THE DATA SEGMENT

; GO I F NOT

; TURN ON MONOCHROME BITS IN EQUIP FLAG

; ENABLE V IDEO

CONTINUE

TRY COLOR I

MOV

SUB

INT

"OV

"OV

OUT

"OV

"OV

"OV sus

"OV

""P

"OV

COP

POP

"NZ

AND

OR

"OV

SUB

INT

POP

"OV

AND

COP sus

"Z

AL,O IH

AH,AH

INT VIDEO

OX.

~08H

AL,O

OX,AL

8X,08800H

OS,BX

AX,OAA55H

BX,BX

[BX],AX '.2

AX, [BX)

AX,OAA55H

OS

Ell 3

OEQO I P FLAG

I

OFFCFH

.EQU I P-FLAG. 'OH

AL.OIH­

AH,AH

INT_VIDEO

AX

AX,II'>EQUIP FLAG

AL , 30H

AL.30H

AL,AL

EI7 2

SET MODE COLOR 40X25 o

I SABLE COLOR

OUTPUT THE 0 I SABLE

CHECK FOR COLOR V IDEO MEMORY

WRITE AN AA55

TO THE FIRST LOCATION

ALLOW BUS TO SETTLE

READ THE FIRST LOCATION

IS THE COLOR VIDEO CARD THERE?

RESTORE THE DATA SEGMENT

GO IF NOT

TURN OFF VIDEO BITS

SET COLOR 40X24

SET NEW VIDEO TYPE ON STACK

I IS IT THE B/W1

GO IF YES

TESTl

5-55

18114 Personal Co"'pl.lter h4ACRO Ass.",bler Version 2.00

TESTI ---06/10/85 POWER ON SELF TEST (POST)

3023 OCI! FE CO

3024 OCI3

3025 OCI3 50

3026 OC!4

302T OC 14 E9 084'&'

3028

3029

3030

3031 OCIT

3032 DCIT IE

3033 OCIl! 2B CO

R

3034 OC I A BE DB

3035 OC I C 8F 0040 R

303& OCIF CT 05 0000 E

303T OC23 IF

3038 OC24 E9 084F R

Ell

Ell -

2,

4,

INC

PUSH

AL

AX

; I N IT I ALI ZE FOR 40X25

.lNP EI6

BOTH VIDEO CARDS FAILED SET DUMMY RETURN IF RETRACE FAILURE

PUSH

SUB h4DV

MOV

MOV

POP

.)MP

1-29

0&-10-85

OS

AX, AX ; SET OS SEGh4ENT TO 0

DS,AX

01 ,OFFSET .VIDEO INT I SET INTERRUPT 10H TO DUMMY

WORD PTR (Dll.OFFSET DUMMY RETURN I RETURN IF NO VIDEO CARD

OS ­

E18_t I BYPASS REST OF VIDEO TEST

5-56

TESTl

IBM P.,..sonal Computer MACRO Aaall!llbl.,.. Vera'on 2.00

TEST! - - - Ob/l0/85 POWER ON SELF TEST (POST)

1-30

06-10-85

3039

3040

3041

3042

3043

3044

3045

304b

3041

3048

3049

3050

3051

3052

30~3

3054 OC21

3055 OC21 B4 00

305b OC29 E8 0000 E

3057

3058

3059

30bO OC2C 68 - - - - R

30bl OC2F 07

30b2 OC30 B9 0016

3063 OC33 8C C8

30b4 OC35 8E 08

30b5 OC3T BE 0000 E

30b6 OC3A BF 0020

30bl OC3D

R

30b8 OC3D A5

30b9 OC3E AB

3010 OC3F E2 FC

3011

3012

3013

301-4 OC41 B9 0008

3015 OC44 BE 0000 E

3076 OC47 BF OICO R

3077 OC4A

3078 OC4A A5

3079 OC4B AB

3080 OC4C E2 FC

3081

3082

3083

3084

3085 OC4E Ob

308b OC4F IF

3081 OC50 Cl 06 0008 R 0000 E

3068 OC5b Cl Ob 0014 RODDa E

3089 OC5C C1 Ob 00b2 R FbOO

3090

3091

3092

3093 OCb2 BO bO

3094 OC64 E8 039b R

3095 OC67 BO 09

3096 OC69 Eb bO

3097

3098 OC6B E8 OC8D R

3099 OC6E 8A F8

3100 OCTO E8 aCeD R

3101 OC73 8A E8

3102 OC75 8A CF

3103 OC17 FC

3104 OC76 BF 0500 R

3105 OC1B

310b OC1B E4 b4

3101 OC10 AS 0 r

31015 OC7F 14 FA

3109 aC81 E4 bO

3110 OCB3 AA

31 I I aCB4 Eb 80

3112 OC86 E2 F3

3113

3114 OC88 EA 0500 ---- R

3115

31 16 OC8D

31 1 7 OC8D E4 64

31 18 OC8F A8 01

3119 OC91 Et FA

3120

3121 ocn

E4 bO

3122 OC95 C3

3123

3124 OC96

3125 OC96

3126

PAGE

MANUFACTUR ING BOOT TEST CODE ROUT I NE

LOAD A BLOCK OF TEST CODE THROUGH THE KEYBOARD PORT FOR MANUFACTURING

TESTS.

THIS ROUTINE WILL LOAD A TEST IMAX LENGTH=FAFFH) THROUGH THE KEYBOARD

PORT. CODE WILL BE LOADED AT LOCATION 0000:0500. AFTER LOADING,

CONTROL WILL BE TRANSFERRED TO LOCATION 0000:0500. THE STACK WILL

BE LOCATED AT 0000:0400. THIS ROUTINE ASSUMES THAT THE FIRST 2 BYTES

TRANSFERRED CONT A I N THE COUNT OF BYTES TO BE LOADED

;

- -------

(BYTE I =COUNT LOW, BYTE 2=COUNT HI. ) ---

- - - - - -

-

- - - - - - - - --

--------------

- - - - - - - - - - - - - - --- - -

-----

--

------

- - -­

; - - - - DEGATE ADDRESS LINE 20

MFG BOOT:

MOV

CALL

; - - - - -

; - - - - -

POSTI

CODE

SETUP HARDWARE I NTERRUPT VECTOR TABLE LEVEL 0-7 AND SOFTWARE INTERRUPTS

PUSH

POP

"OV

"OV

"OV

"OV

MOV

MOVSW

STOSW

LOOP

MOV

MOV

"OV

MOV

CALL

MOV

OUT

CALL

"OV

CALL

"OV

"OV eLD

MOV

MFG_Bl

AL,STATUS PORT

AL, OUT BUF FULL

MFG B3-

AL.PORT_A

SET ES SEGMENT REGISTER TO ABSO

GET VECTOR COUNT

GET THE CURRENT CODE SEGMENT VALUE

SETUP OS SEGMENT REGI STER TO

POiNT TO THE ROUTINE ADDRESS TABLE

SET DESTINATION TO FIRST USED VECTOR

MOVE ONE ROUT I NE OFFSET ADDRESS

I NSERT CODE SEGMENT VALUE

MOVE THE NUMBER OF ENTR I ES REQU I RED

SETUP HARDWARE INTERRUPT VECTORS LEVEL 8-15 (VECTORS START AT INT 70 H)

MOVSW

STOSW

LOOP

; MOVE ONE ROUTINE OFFSET ADDRESS

; INSERT CODE SEGMENT VALUE

SET UP OTHER INTERRUPTS AS NECESSARY

ASSUME OS; ASSO, ES: ABSO

PUSH

POP

MOV

MaV

MOV

ES as

WORD PTR (INN I PTR, OFFSET NM I I NT

WORD PTR PINT5 PTR,OFFSET PRTNT SCREEN

WORD PTR PBASIC_PTR+2,OF600H -

ENABLE KEYBOARD PORT

IN

TEST

JZ

IN

STOSB

OUT

LOOP

';MP

IN

TEST

LOOPZ

IN

RET

ENOP

ENOS

ENO

AH,DISABLE 81T20

GATE_A20 -

ABSO

ES

CX,24

AX,CS

DS,AX

SI,OFFSET VECTOR TABLE

01 ,OFFSET ClINT_PTR

MFG_B2

AL, bOH

C8042

AL,OOOOIOOIS

PORT_A,AL

MFG B4

BH,AL

MFG B4

CH.'AL

CL.BH

OJ ,OFFSET IPMFG_TEST_RTN

MFG PORT ,AL

MFG::::B3

OMFG_TEST_RTN

AL,STATUS PORT

AL, OUT BUF FULL

MFG_B4­

AL .PORT_A

; DEGATE COMMAND FOR ADDRESS LINE 20

; ISSUE TO KEYBOARD ADAPTER AND CL I

WRITE 8042 MEMORY LOCATION 0

I S SUE THE COMMAND

SET INHIBIT OVERRIDE/ENABLE OSF

INTERRUPT AND NOT PC COMPATIBLE

GET COUNT LOW

SAVE IT

GET COUNT HI

ES= ABSO

SET OS TO ABSO

NM I INTERRUPT

PRINT SCREEN

CASSETTE BAS I C SEGMENT ex NjJW HAS COUNT

SET DIRECTION FLAG TO INCREMENT

SET TARGET OFFSET (OS=OOOO)

GET 8042 STATUS PORT

KEYBOARD REQUEST PENDING?

LOOP TILL DATA PRESENT

GET DATA

STORE IT

DISPLAY CHARACTER AT MFG PORT

LOOP T ILL ALL BYTES READ

FAR .JUMP TO CODE THAT WAS .JUST LOADED

CHECK FOR OUTPUl BUFFER FULL

HANG HERE IF NO DATA AVAILABLE

GET THE COUNT

TESTl

5-57

0000 6

7

8 •

'0

"

'2

13

, , 8

20

2 ,

15

16

17

.

22

23

2 '

25

26

27

28

2 '

30

31

32 ,.

35

36

37

..

.3

3. .,

.2

.5

38

'6

47

48

55

56

57

58

5.

60

61

4'

50

51

52

53

5.

62

"

65

66

61

68

6.

10

11

72

73

74

75

76

77

78

7.

80

8'

82

83

8.

85

86

87

88

..

.3

8'

'0

.,

.2

.. '5

96

.7

'8

100

0000

0000 80

0'

0002 EB 0000 E

0005 EB 0000 E

0008 28 ED

10'

OOOA FA

102 OOOB 80 00

103 0000 E6 21

10. OOOF E6 AI

105 00 I I EB 00

106 0013 E4 21

107 0015 8A EO

, 08 0011 E4 AI

' 0 '

" 0 0019 OA EO

0018 75 2C '"

".

0010 BO 25

OOIF E6 80

18104 Person. I Computer Io4ACRO Assembler Ver~ion 2.00

TEST2 - - - - 06/10/85 POST TESTS AND INITIALIZATION ROUTINES

I - I

06-10-85

PAGE 116,121

TITLE TEST2 - - - 06/10/65 POST TESTS AND INITIALIZATION ROUTINES

.286e

.261

.LIST

CODE SEGIo4ENT 8YTE PUBL! C

PU8LIC C21

PUBLIC POST2

PUBLIC SHUT2

PUBL I C SHUT3

PUBL! C SHUH­

PUBLIC SHUTE>

PUBLIC SHUT1

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EI01;NEAR

EI02:NEAR

E I031NEAR

EI04:NEAR

EIOS:NEAR

E1061NEAR

EI071NEAR

EI08:NEAR

EI09:NEAR

EI61 :NEAR

EI62:NEAR

EI63:NEAR

EI64:NEAR

E201 :NEAR

E202 :NEAR

E203 :NEAR

E30 I :NEAR

E302 :NEAR

E303 :NEAR

E304:NEAR

E40 I :NEAR

E50 I :NEAR

E601 :NEAR

BLINK INT:NEAR

C6042:NEAR

CMOS REAOINEAR

CMOS-WR ITE;NEAR

CONFTG BAO:NEAR

01 ,NEAR

02: NEAR

DDS:NEAR

DISK SETUP:NEAR

OSKETTE SETUP: NEAR

ERR BEEP: NEAR

E MSG:NEAR

F30: NEAR

F301 :NEAR

GATE A20:NEAR

HD I NT: NEAR

KBD RESET; NEAR

NM'-'NT;NEAR

OBF-42: NEAR

POST3: NEAR

PR I NT SCREEN: NEAR

PROC SHUTDOWN:NEAR

PROT-PRT HEXINEAR

PRT REX:NEAR

P MSG:NEAR

ROM CHECK :NEAR

ROM-CHECK5UM:NEAR

SEEK: NEAR

SET TOO; NEAR

SLAVE VECTOR TABLE: NEAR

SND DATA:NEAR

ST ART I: NEAR

STGTST CNT: NEAR

SYSINITI :NEAR

VECTOR TABLE: NEAR

WAITF:NEAR

XPC_BYTE :NEAR

101 ERROR CODE INTERRUPT FAILURE

102 ERROR CODE TIMER FAILURE

103 ERROR CODE T I MER ] NTERRUPT

104 ERROR CODE PROTECTED MODE ERROR

105 ERROR CODE 8042 COMMAND FAILURE

106 ERROR CODE CONVERT I NG LOG J C

101 ERROR CODE NMI ERROR

108 ERROR CODE TIMER BUS ERROR

109 ERROR CODE MEMORY SELECT ERROR

161 ERROR CODE BAD BATTERY

1&2 ERROR CODE CMOS CHECKSUM/CONFIG

'63 ERROR CODE SAD REAL TI ME CLOCK

1 &4 ERROR CODE MEMORy SIZE WRONG

201 ERROR CODE MEMORY DATA ERROR

202 ERROR CODE MEMORY ADDRESS ERROR

203 ERROR CODE SEGMENT ADDRESS ERROR

30' ERROR CODE KEYBOARD ERROR

302 ERROR CODE LOCK'S ON

303 ERROR CODE KEYBOARD/PLANAR ERROR

304 ERROR CODE KEYBOARD/PLANAR ERROR

40 I ERROR CODE MONOCHROME ADAPTER

50! ERROR CODE COLOR ADAPTER

601 ERROR CODE DISKETTE ADAPTER

TEST .11

8259 INTERRUPT CONTROLLER TEST

DESCR I PT I ON

READ/WRITE THE INTERRUPT MASK REGISTER (IMRI

WITH ALL ONES AND ZEROES. ENABLE SYSTEM

INTERRUPTS. MA SK DEV I CE I NTERRUPTS OFF. CHECK

FOR HOT INTERRUPTS (UNEXPECTED).

POST2

C21:

C2IA;

ASSUME CS:CODE,DS:DATA

NEAR PROC

MOV

CALL

CALL

AL, 10

PRT HEX

DDS-

AL.25H

MFG_PORT ,AL

; LINE FEED ON DISPLAY

; SET DATA SEGMENT

CLEAR ERROR FLAG REGISTER (BPI <=> 0 FLAGS ERROR

SUB BP,BP ; CLEAR IBPI REGISTER AS ERROR FLAG REG

TEST THE INTERRUPT MASK REGISTER REGISTERS eLl

MOV

OUT

OUT

JMP

'N

MOV

'N

OR

JNZ

AL,O

INTAOt,AL

INTBOI,AL

'.2

AL,INTAOI

AH,AL

AL.INTBOI

AH,AL

06

TURN OFF INTERRUPTS

SET INTERRUPT MASK REGISTER TO ZERO

SEND TO 2ND INTERRUPT CONTROLLER ALSO

READ INTERRUPT MA SK REG I STER

SAVE RESULTS

READ 2ND I NTERRUPT MASK REGISTER

BOTH ,MR :: O?

GO TO ERR ROUT I NE IF NOT 0

MOV

OUT

<> <> <> <><><> <> <> <> <><> <>

<><> CHECKPOlNT 25 <><>

~

5-58

TEST2

IBM P""'i5onal Comput. .. r MACRO Ai5i5embl .. r 1I ...

sion 2.00

TEST2 ---Ob/10/85 POST TESTS AND INITIALIZATION ROUTINES

115

I 16 0021 90 FF

111 0023 E6 21

118 0025 E6 AI

1190027EBOO

120 0029 E4 21

121 0028 8A EO

122 0020 E4 AI

123

124 002F 05 000 1

125 003215 15

12b

127

126

129

130

131 0034 A2 OObB R

132

133 0037 80 26

134 0039 E6 80

135

136 0038 F8

137 003C 89 19E4

! 38 003F E8 0000 E

139 0042 80 3E 0068 R 00

140 0047 74 00

141

142 0049 C6 06 0015 R 05

143

144 004E BE 0000 E

145 0051 E8 0000 E

146 0054 FA

147 0055 F4

146

149

150

151 0056 BO

2.

152 0058 E6 80

153

154 005A B8 AA55

155 0050 E7 82

156 005F E4 82

157 0061 86 C4

158 0063 E4 83

159 0065 3D 55AA

160 0068 74 05

1b1

162 006A BE 0000 E

163 0060 EB E2

1b4

1b5

1bb

167 006F

168 006F 80 00

169 0071 E6 10

170 0073 89 0007

171 0016 E8 0000 E

172 0019 80 80

173 0078 E6 10

114 00'70 80 3E 0068 R 00

175 0082 74 09

17b

177 0084 BO 28

178 0086 E6 80

179

180 0088 8E 0000 E

181 0088 E8 e4

182

163

164

185 0060 80 29

186 008F E6 80

187 0091 E461

188 0093 8A EO

189 0095 24 FC

190 0097 E6 61

191

192 0099 80 80

193 0098 Eb 43

194 0090 E8 00

195 009F 88 AA55

196 00"2 E6 42

197 00A4 E8 00

198 00A6 8A C4

199 00A8 E6 42

200 OOAA E8 00

20 I OOAC E4 42

202 OOAE 86 EO

203 0080 E8 00

204 0082 E4 42

205 0084 3D 55AA

206 0081 14 05

207

208 0089 8E 0000 E

209 Dose E8 93

210

211

212

213

214

215

21b

217

216

219 008E 80 2A

220 ooeo E6 60

221 OOC2 FA

222 00C3 80 FE

223 00C5 E6 21

224 DOC. 80 10

225 00C9 E6 43

226 00C8 89 002C

227

228 OOCE E8 00

; - - - - -

06:

06A:

D. :

"OY

OUT

OUT

J"P

IN

"OY

IN

AL,OFFH iNTAOl,AL

INTB01,AL

' . 2

AL.INTAOI

AH,AL

AL,INT801

ADO

JNZ

AX.I

06

CHECK FOR HOT INTERRUPTS o

I SABLE DEV! CE INTERRUPTS

WRITE TO INTERRUPT MASK REGISTER

WR I TE TO 2ND I NTERRUPT ~ASK REG I STER

J /0 DELAY

READ I NTERRUPT MASK REG I STER

SAVE RESULTS

READ 2ND INTERRUPT MASK REGISTER

ALL IMR SITS ON7

NO GO TO ERR ROUT I NE

I NTERRUPTS ARE MASKED OFF. CHECK THAT NO I NTERRUPTS OCCUR.

"OY

"OY

OUT

STI

MOY

CALL e"p

JZ

<!O I NTR_FLAG, AL

AL.26H

MFG_PORT ,AL ex ,6628

WAITF

~INTR

07 -

FLAG,OOH

"OY (!'>MFG_ERR_FLAC, 05H

"OY

CALL eLI

HL T

SI,OFFSET EIOI

E_MSG

CHECK THE CONVERT I NG LOG I C

1 CLEAR I NTERRUPT FLAG

..> ..>..> ..

> .. ><><><> .. > .. > .. ><>

<><> CHECK PO I NT 2b <><>

ENA8LE EXTERNAL INTERRUPTS

WA IT 100 M ILL! SECONDS FOR ANY

I NTERRUPTS THAT OCCUR

010 ANY INTERRUPTS DCCUR?

NO GO TO NEXT TEST

.. > <> ..> <><><><> <><><> <><>

CHECKPOINT 5 <><>

DISPLAY 101 ERROR

HALT THE SYSTEM

"OY

OUT

"OY

OUT

IN

XCHG

IN e"p

JZ

AL.21H

~FG PORT, AL

AX, OAA55H

MFG PORT+2,AX

AL,MFG PORT+2

AL,AH -

AL,MFG PORT+3

AX,55AAH

01_A

<><><> <><><><><> <> <> <><>

<><> CHECKPOINT

WRITE A WORD

GET THE FIRST 8YTE

SAllE IT

GET THE SECOND BYTE

IS IT OK?

GO IF YES

21 <><>

"OY

J"P

S I • OFFSET E 106

~bA

;. D I SPLAY '06 ERROR

CHECK FOR HOT NMI INTERRUPTS WITHOUT I/O-ME~ORY PARITY ENABLED

; - - - - -

Dl_C:

1-2

06-10-85

"OY

OUT

J"P

"OY

OUT

J"P

"OY

OUT

J"P

IN

XCHG

J"P

IN eMP

JZ

"OY

J"P

"OY

OUT

"OY

CALL

"OY

OUT e"p

JZ

AL,CMOS REG D

CMOS PORT, A[

CX,l-

WAITF

AL, CMOS REG O+NM I

CMOS PORT, A[ f1INTR FLAG,OOH

Dl_C -

"OY

OUT

"0'

J"P

AL,28H

51.0FFSET EIOl

06.

TEST THE DATA BUS TO TIMER 2

MOV

OUT

IN

"OY

AND

OUT

AL,29H

~FG PORT ,AL

AL,PORT 8

AH, AL -

AL, OFCH

PORT_S,AL

AL,101100008

TlMER+3.AL

'.2

AX,OAA55H

TIMER+2,AL

'.2

AL,AH

TIMER+2,AL '.2

AL, TIMER+2

AH,AL

"2

AL. T IMER+2

AX,055AAH

01_0

SI,OFFSET EI06

DbA

TURN ON NMJ

ADDRESS DEFAULT READ ONLY REGI STER

DELAY COUNT FOR j 00 MICROSECONDS

WAIT FOR HOT NM! TO PROCESS

TURN NMI ENABLE 8ACK OFF

DID ANY I NTERRUPTS OCCUR 7

CONT I NUE I F NOT

<><><><><><><><><><> <> <>

<> <> CHECKPO I NT 28 <> <>

DISPLAY 101 ERROR

<><> <><> <> <><> <> <> <> <> <>

<><> CHECKPOINT 29

GET CURRENT SETT I NG OF PORT

SAVE THAT SETTING

INSURE SPEAKER OFF

SELECT TIM 2,LS8,MS8,8INARY,MODE a

WR I TE THE TIMER MODE REG I STER

I/O DELAY

WR I TE AN AA55

WRITE TIMER 2 COUNT

I/O DELAY

LS8

WRITE TI~ER 2 COUNT

I/O DELAY

GET THE LSB

SAVE IT

I/O DELAY

GET THE MSS

8US OK?

GO I F OK

DISPLAY lOB ERROR

TEST. 18

OEsCR

6254 T I MER CHECKOUT r PT I ON

VERIFY THAT THE SYSTEM TIMER (0) DOESN'T COUNT

TOO FAST OR TOO SLOW.

01_0: MOV

OUT eLI

"OY

OUT

"OY

OUT

"OY

J"P

AL,2AH

MFG PORT, AL

AL, OFEH

INTAO I ,AL

AL, 000 100008

TI~ER+3,AL

CX ,2CH

'.2

<><> <> <> <> <> <> <> <> <><><>

<><> CHECKPOINT 2A <><>

MASK ALL I NTERRUPT5 EXCEPT LEVEL a

WRITE THE 8259 IMR

SELECT TIM 0, LS8, MODE 0, 81NARY

WR I TE T I MER CONTROL MODE REG I STER

SET PROGRAM LOOP COUNT

J /0 DELAY

TEST2

5-59

IBM Personal Comput.er MACRO Assembler Verston 2.00

TEST2 ---06/10/85 POST TESTS AND INITIALIZATION ROUTINES

1-'

06- I 0-65

229 0000 8A C I

230 0002 E6 40

231 0004 F8

232 0005 ~6 06 0068 R 01

233

234 OODA 75 00

235 OOOC E2 Fl

23b

237 OODE C6 06 0015 R 02

236

239

2.0

241 00E3 BE 0000 E

242 00E6 E9 0051 R

2'3

24.

245 00E9 BO 2B

24& OOEB E6 80

247

248 ODED FA

249 OOEE BlOC

250 OOFO BO ~F

251 00F2 E6 40

252 00F4 C6 06 006B R 00

253 00F9 BO FE

254 OOFB £6 2 I

255 OOFD FB

256 OOFE F6 06 006B R 0 I

257 0103 Hi DE

258 0105 E2

25.

Fl

2.0

261

262 0107 2B C9

263

264 0 I 09 BO 2C

265 OIOB E6 80

266 0100

267 0100 F6 06 006B R 01

268 01 12 75 08

269 0114 E2 F7

270

27101168EOOOOE

272 0119 E9 0051 R

273

27'

275

27601lCFA

217 01tDBOFF

27801lFE621

279 0121 BO 36

280 0123 E6 43

281 0125 EB 00

282 0127 BO 00

283 0129 E6 40

284 012B EB 00

285 0120 E6 40

266 2.,

288

289 a

12F 2B C9

290 0131 BO 20

291 0133 E6 80

292 0135 E4 64

293 0137 A8 02

294 0139 74 08

295 013B E2 F8

2. .

2'7

296

299 0130 BE 0000 E

300 0140 E9 0051 R

301

302

303

3D'

305

30b

307

306

30'

310

311

312 0143

313 0143 E8 0000 E

314 0146 BO 2F

315 0148 E6 80

31b

317 014A 81 3E 0072 R 1234

318 0150 75 03

319 0152 E9 0420 R

320

321

322

323 0155 BO 30

324 0157 E6 80

325

326 0159 B8 028F

327 DISC E8 0000 E

32.

32.

330

331 015F BC 0000

332 0162 8E 04

333 0164 BC 8000

33.

335 0167 E8 0000 E

33.

331 016A BO 31

338 016C E6 80

33'

340

341

342 016E lOA 08

08:

"OV

OUT

STI

TEST

JNZ

LOOP

"OV

AL,CL

TIMER+O,AL

01 NTR_FLAG.O 1 H

09

06

OMf"G_ERR_FLAG,02H

SI,OFFSET EI02

DbA

SET T I MER 0 COUNT REG I STER

WRITE TIMER 0 COUNT REGISTER

DID TIMER 0 INTERRUPT OCCUR?

CHECK TIMER OPERATION FOR SLOW TIt..E

WA I T FOR ,NTERRUPT FOR SPEC I FI ED TI ME

<> <> <> <> <><><> <> <> <> <> <> <><> <>

<><> TIMER CHECKPOINT (2) <><>

01 SPLA Y 102 ERROR

TIMER 0 INTERRUPT DID NOT OCCUR" ERROR

09:

DIOt

011 0:

D12:

013:

MOV

OUT eLI

MOV

MOV

OUT

MOV

"OV

OUT

STI

TEST

JNZ

LOOP

AL,2BH

MFG_PORT .AL

Cl,I2

AL,OFFH

TI MER+O.AL

ClINTR FLAG,O

AL,OFEH

INTAOI,AL

"OV

OUT

ClINTR FLAG,OIH

08 A -

01'0

WAIT FOR INTERRUPT

SUB CX,CX

AL,2CH

MFG_PORT ,AL

<><> <> <><><><><><> <><><>

<><> CKECKPOINT 2B <><>

SET PROGRAM LOOP COUNT

WR I TE TI MER 0 COUNT REG I STER

RESET INTERRUPT RECEIVED FLAG

RE-ENA8LE T I MER 0 INTERRUPTS

DID T [MER 0 I NTERRUPT OCCUR?

YES TIMER COUNTING TOO FAST, ERROR

WAIT FOR INTERRUPT FOR SPECIFIED TltdE

TEST

JNZ

LOOP

ClINTR_FLAG.OIH

012

DI10

<> <> <> <><> <> <> <> <> <> <><>

<><> CHECKPOINT 2C <><>

DID TIMER

GO IF YES

TRY AGAIN

0 INTERRUPT OCCUR?

DISPLAY 103 ERROR

ERROR I F NOT

"OV

J"P eLI

MOV

OUT

"OV

OUT

J"P

"OV

OUT

JMP

OUT

51 ,OFFSET EI03

06'

SETUP TI MER 0 TO MODE 3

AL,OFFH

INTAOI,AL

AL,36H

TIMER+3,AL

'-2

AL,O

T IMER+O,AL

" 2

TlMER+O ,AL

DISABLE ALL DEVICE INTERRUPTS

SELECT TIMER O,LSB,MSB,MODE 3

WRITE TIMER MODE REGISTER

110 DELAY

WRITE LSB TO TIMER 0 REGISTER

I/O DELAY

WRITE MSB TO TIMER 0 REGISTER

CHECK 6042 FOR LAST COMMAND ACCEPTED

SUB

"OV

OUT

IN

TEST

JZ

LOOP

CX,CX

AL,20H

MFG PORT ,AL

AL,S-TATUS PORT

AL, I NPT aUF FUll

EI9

013

-

ERROR EXIT (MESSAGE 105)

SET WAIT TIME

<> <> <> <><><><><> <><><><>

<><> CHECKPOINT 20 <><>

GET THE 6042 STATUS

HAS THE LAST COMMAND BEEN ACCEPTED?

GO IF YES

TRY AGAIN

; - - - - -

MOV

JMP

SI,OFFSET EI05

D6A

PRINT 105 ERROR

GO ERROR HALT

;

- - - - - -

--------

- - -- - - -

----

- - - - - - - - - -

--

-

--

- -

-

- - - -

----

-

-

- - - - -- -----

-

- - - - -­

I TEST. 19

ADDITIONAL READ/WRITE STORAGE TEST

++++ MUST RUN IN PROTECTED MODE ++++

DESCR I PT I ON

WRITE/READ DATA PATTERNS TO ANY READ/WRITE STORAGE AFTER THE

FIRST 64K. STORAGE ADDRESSABILITY IS CHECKED.

;------------

------------­

E19:

ASSUME DS:OATA

CALL

"OV

OUT e"p

JNE

JMP

005

Al,2FH

MFG_PORT ,AL

~~~~ET

_FLAG, 1234H

SHUT2

SET DATA SEGMENT

<> <> <> <> <><> <> <> <> <> <><>

<><> CHECKPOINT 2F <><>

WARM START?

GO IF NOT

GO TO NEXT TEST I F WARM START

EI9AI

; - - - - -

SET SHUTDOWN RETURN 2

MOV

OUT

AL,30H

MFG_PORT, AL

<> <> <> <> <><><> <> <> <> <><>

<><> CHECI(POINT 30 <><> hlDV

CALL

AX,Z·H+CMOS SHUT_DOWN+NNI

CMOS_WRITE -

• ADDRESS FOR SHUTDOWN BYTE

SECOND ENTRY IN SHUTDOWN TABLE

ENABLE PROTECTED MODE

SET STACK f"OR SYS1NITI

"DV

"OV

"OV

CALL

MOV

OUT

SP,P05T S5

SS, SP

SP,POST_SP

SYSINITI

AL,31H

MFG_PORT ,AL

SET TEMPORARY STACK

GO ENABLE PROTECTED MODE

<><><> <> <><><><> <> <><><>

<><> CHECKPOINT 31 <><>

; - - - - -

5-60

TEST2

IBM Personal Computer MACRO Assembler Vers<on 2.00

TEST2 - - - 06/10/85 POST TESTS AND INITIALIZATION ROUTINES

1-4

06-10-85

398 0lC8 86 C4

399 oleo E8 0000 E

400 DIDO 58

401 0101 3B DO

402 0103 77 37

403 0105

404 0105 8B 08

405 0107 88 DO

406

401

408

409 0109 B8 9798

410 OIDC E8 0000 E

411 OIDF 86 EO

412 OIEI E8 0000 E

413 01E4 88 C8

414

415

416 01E6 88 8081

417 0lE9 E8 0000 E

418 OIEC 86 EO

419 OIEE E8 0000 E

420

421

422

423 0 IF 1 3B C8

424 0lF3 74 OF

425

426

421

426 0lF5 50

429 0 I F6 B8 8E8E

430 0lF9 E8 0000 E

431 OIFC DC 10

432 01FE 86 C4

433 0200 E8 0000 E

434 0203 58

435

436 0204

431 0204 38 C8

438 0206 11 02

43' 0208 88 C8

440 020A

441 020A 03 09

442 020C

443 020C 81 FA 020 I

444 0210 72 00

445

446 0212 B8 B3B3

447 0215 E8 0000 E

448 0218 DC 80

449 021A 86 C4

450 021C E8 0000 E

451 021F

452 021F 89 IE 0017

453 0223 C I EB 06

454 0226 48

455 0227 C I EA 06

450

0170 07

344 0171 26: C7 06 005A 0000

345 017826: C6 06 005C 00

346 017E 8E 0058

347 0181 8E 06

348 0183 8C FFFO

349

350

351

352 0186 6A 18

353 0166 IF

354

355 0169 BO 80

356 018B E6 87

351

358

359

360 0160 B8 0040

361

362

0190 E8 099F R

363

364

365 0193 88 B081

366 0196 E8 0000 E

367 019986 EO

368 0198 E8 0000 E

369 019E 8B IE 0013 R

370 0lA2 8B 03

371 0lA4 03 08

312

373

314

375 0lA6 BO 8E

376 0lA8 E8 0000 E

311

376 0lA8 A8 CO

379 OIAD 74 02

380 OlAF EB 5B

381

382

383 OIBI

384 OIBI B8 9596

385 0184 E8 0000 E

386 0187 24 3F

387 018986 EO

388 0lB8 E8 0000 E

389 0 I BE 3B DO

3., 0 I CO 74 13

392

393

394 0lC2 50

395 a

I C3 88 8E8E

396 01C6 E8 0000 E

397 0 I C9 DC 10

R

1-----

E20BO:

E2081:

;~---~

MOY

CALL

AX,(CMOS EMS LO+NMII·H+(CMOS EMS HI+NMI)

CMOS READ ; HIGH-BYTE ­

; - - - - -

; - - - - -

XCHG

CALL

AH,A[

CMOS READ

; SAVE HIGH BYTE

; LOW BYTE

MOY CX, AX ; SAVE THE ABOVE 640K MEMORY SIZE

ABOVE 640K SIZE FROM MEMORY SIZE OETERM I NE

CX=CONFIG AX=MEMORY SIZE DETERMINE

MOV AX, (CMOS U M 5 LO+NM I I ·H+ (CMOS U M S HI +NM I I

CALL CMOS READ ; HI GH-8YTE ­

XCHG

CALL

AH,AL

CMOS READ

; SAVE HIGH BYTE

; LOW BYTE

WHICH IS GREATER AX = MEMORY SIZE DETERMINE

- - - - - CX = CONFIGURATION (ABOVE 6401 BX = SIZE (BELOW 6401

; - - - - -

POP

MOV

MOV

MOV

MOV

MOV

OOV

OUT

OOV

CALL

MOV

CAll

XCHG

CALL

MOV

MOV

ADD

PUSH

OOV

CALL

OR

XCHG

CALL

POP eMP

JA eMP

JZ

PUSH

MOV

CALL

OR

XCHG

CALL

POP

SET MEMI :

CMP

JA

~OV

SET MEM:

ADD

E20C:

COP

JB

OOV

5HR

OEC

5HR

ES

ES:SS TEMP.BASE LO WORD,O

8YTE PTR ES: 15S-TEi:i:P.BASE HI BYTEI,O

SI,SS TEMP -

SS,SI­

SP,MAX_SEG_LEN-2

DATA SEGMENT TO SYSTEM DATA AREA

PUSH

POP

BYTE PTR RSDA PTR

05

AL, PAR I TY CHECK

DMA_PAGE+6,AL

PR I NT 64 K BYTES OK

MOV

CALL

AND

XCHG

CALL

CMP

.JZ

AX,64

PRT _OK

AX, ICMOS U M 5

CMOS READ -

LO+NM11-H+CMOS U M 5

HIGH BYTE­

HI+NMI

AH,A[

CMOS READ

8X,Q!lMEMORY SIZE

DX,eX -

BX,AX

SAVE HIGH BYTE

LOW 8YTE

LOAD THE BASE MEMORY SIZE

SAVE BASE MEMORY SizE

SET TOTAL MEMORY SIZE

AL,BAD BAT+BAO CKSUM

E20BO -

SHORT E20C

AX, (CMOS B M S LO+NM I) -H+CMOS 8 M 5 HI +NM I

CMOS READ HIGH BYTE­

AL,03FH

AH,AL

CMOS READ

DX,AX

E2081

, SAVE HIGH BYTE

; LOW BYTE OF 8ASE MEMORY

;

MASK OFF THE MANUFACTURING TEST BITS

5 I ZE

IS MEMORY SIZE GREATER THAN CONFIG?

I GO I F EQUAL

1-----

SET MEMORY SIZE DETERMINE NOT EQUAL TO CONFIGURATION

AX

AX,X· (CMOS DIAG+NMI)

CMOS READ -

AL,W-MEM SIZE

AL.AH -

CMOS WR I TE

AX -

DX,AX

E20C

AX

AX,X-(CMOS DIAG+NMII

CMOS READ -

AL.W-MEM SIZE

AL,AH -

CMOS WR (TE

AX -

POINT TO DATA AREA

SET CHECK PAR I TY

SAVE WH I CH CHECK TO USE

STARTING AMOUNT OF MEMORY OK

POST 65K OK MESSAGE

GET THE MEMORY SIZE DETERM I NED I PREPARE 8X AND OX FOR BAD CMOS 1

I S CMOS GOOD 7

OOV

CALL

TEST

J,

JMP

AL, CMOS 0 I AG+NM I

CMOS_READ

DETERMJNE THE CONDITION OF CMOS

GET THE CMOS STATUS

CMOS OK 7

GO I F YES

DEFAULT IF NOT

GET THE BASE 0->640K MEMORY SIZE FROM CONFIGURATION IN CMOS

~OV

~OV

SET BASE MEMORY SIZE I N TOT AL REG I STER

SAVE IN BASE SIZE REGISTER

CHECK MEMORY SIZE A80VE 640K FROM CONFIGURATION

; IS CONFIGURATION EQUAL TO DETERMINED?

; GO IF EQUAL

SET MEMORY SIZE DETERMINE NOT EQUAL TO CONFIGURATION

OOV

CALL

OR

XCHG

CALL

BX,AX

DX,AX

CX,AX

SET_MEMI

CX,AX

SET MEM

CX,AX

BX,CX

DX,513

NO_640

AX,X· (CMOS INFOI28+NMII

CMOS READ

AL,M640K

AL,AH

CMOS_WRITE

WORD PTR IIKB FLAG, BX

8X,6 -

BX

DX,6

SAVE AX

ADDRESS THE STATUS BYTE

GET THE STATUS

SET CMOS FLAG

SAVE AL AND GET ADDRESS

WRITE UPDATED STATUS

RESTORE AX

I S MEMORY SIZE GREATER THAN CONF I G 7

DEFAULT TO MEMORY SIZE DETERMINED

7

SAVE AX

ADDRESS THE STATUS BYTE

GET THE STATUS

SET CMOS FLAG

SAVE AL

UPDATE STATUS BYTE

RESTORE AX

IS CONFIG GREATER THAN DETERMINED?

GO IF YES

USE MEMORY SIZE DETERM I NE I F NOT

SET TOTAL MEMORY SIZE

CHECK IF 8ASE MEMORY LESS 512K

GO IF YES

SET 640K BASE MEMORY BIT

GET THE CURRENT STATUS

TURN ON 640K BI T IF NOT ALREADY ON

SAVE THE CURRENT DIAGNOSTIC STATUS

RESTORE THE STATUS

SAVE TOTAL SIZE FOR LATER TESTING

D[VIDE BY 64

1ST 64K ALREADY DONE

DIVIDE BY 64 FOR BASE

TEST2 5-61

1-'

06-10-85

.57

4 ••

459 022A 52

4bO 0228 6A 40

461 0220 53

462

463 022E 52

4b4 022F EoA 40

465 0231 53

'66

4&1

•••

469 0232 6A 08

470 0234 07

4"

412

413

414 0235 26 Cl 06 0048 FFFF

415 023C 26 CT 06 004A 0000

476 0243 26 C6 06 004C 00

.,8

0249 26 C6 06 0040 93

479

.80

48! 024F 26 Cl 06 0060 FFFF

482 0256 26 C7 06 00&2 0000

483 0250 26 C6 06 0064 00

484 0263 26 C6 06 0065 93

48.

486

.81

488 0269 2A CO

489 0268 E6 85

490 0260 E6 86

49' 026F FE CO

492 0211 E6 84

493

494

495

496

491 0213

498 0273 6A 08

499 0215 1 F

500 0216 FE 06 0064

501 021A FE 06 004C

.02

503

50.

505 021E 60 3E 00b4 04

506 0283 72 04

.01

508 0285 80 CO

509 0287 E6 87

510

~:~

0289

513 0269 80 3E 0064 OA

514 OZ8E 71 16-

515

516

511

518 0290 59

519 0291 58

520 0292 58

521 0293 50

522 0294 53

523 0295 51

524 0296 38 06 0064

525 029A 72 OA

526

527

528

529 029C C6 Ob 0064 10

530 02A I C6 06 004C 10

531

532

533

53-4 02A6 AO 0064

535 02:A9 E6 8-4

"6

531 .,.

540 02A8 80 3E 004C FE

541

542

543

0280 74 29

544

545 02B2 6A 60

5-46 0284 1 F

5-47 0285 bA 48

548 0287 07

5.9

550 0288 BO 31

551

552

02BA E6 80

553 028C B9 8000

554 028F E8 0000 E

555 02C2 74 03

556 02C4 E9 0361 R

557 02C1

558 02C1 59

559 02C8 58

.60

561

562

563 02C9 2B FF

564 02CB AB

565

566 02CC 05 0040

561 02CF 50

568 0200 51

56.

570 0201 E8 099F R

I--~--

; - - - - -

SAVE COUNTS IN STACK FOR BOTH MEMORY ANO ADDRESSING TESTS

PUSH pop

SU8

OUT

OUT

INC

OUT

PUSH

POP

INC

INC

POP

POP

POP

PUSH

PUSH

PUSH

CMP

.JB

CALL ox

BYTE PTR 64

8X

MODIFY DESCRIPTOR TABLES

~~ ;~~-i~~~: ~~~EL~~I ~o~ri:

OSEG_LEN

BYTE PTR ESI (ES-TEMP.BASE HI BYTEf ,0 ; FIRST b5K

BYTE PTR ESI (ES=TEMP.OATA=AC'f_RIGHTSf ,CPLO_OATA_ACCESS

AL,A.L

DMA PAGE+4.AL

~~A:PAGE+5.AL

BYTE PTR GOT PTR os

; MEMORY TEST LOOP

; POINT TO START OF DESCRIPTOR TABLE

BYTE PTR OSI lOS TEMP.BASE HI BYTE)

BYTE PTR DSI (ES=TEMP.BASE=HI:BYTE)

; POINT TO NEXT BLOCK

~~;.B~r~E~~~AES: (DS_TEMP.~A~~V~IT~~T~:GH

BYTE OF SEGMENT

; FOR POSSIBLE ERROR

BYTE PTR OS_TEMP os

BYTE PTR ES_TEMP

ES

CX,8000H

STGTST_CNT

NI

E21A

CX

AX

OJ ,01

PRT _OK

1 MODIFY THE DESCRIPTOR TABLE

SET TEMPORARY ES DESCRIPTOR 64K SEGMENT LIMIT STARTING AT 000000

;----SET TEMPORARY OS OESCR I PTOR 64K SEGMENT LI MIT AT FI RST 65K BLOCK

; - - - - -

1-----

E21:

~~~=~;

; - - - - -

; - - - - -

NEXT;

; - - - - -

NI,

PUSH

PUSH

PUSH

PUSH

PUSH

PUSH

"OV

"OV

MOV

MOV

MOV

MOV

MOV

MOV

TEMPORARY SEGMENT SAVE IN OMA PAGE REGISTER FOR SECOND 65K BLOCK

MEMORY TEST LOOP PO I NT TO NEXT BLOCK OF 32K WORDS (64K I

CHECK FOR END OF 256K PLANAR MEMORY

CMP

JB

MOV

OUT

BYTE PTR OS: (OS TEMP.BASE HI BYTE) ,04H

E21_0 -GO-IF STILL FIRST 256K OF BASE MEMORY

AL.PARITY CHECK+IO CHECK; CHECK FOR ANY TYPE OF PARITY ERROR

OMA_PAGE+6,AL ; AFTER FIRST 25bK

CHECK END OF FIRST 640K OR ABOVE (END OF MAXIMUM BASE MEMORY)

CMP

.JA

BYTE PTR OS; ~DS TEMP.BASE HI BYTEf ,OAH

NEXT ; -CONT I NUE I F ABOVE 1 MEG

;----CHECK FOR END OF SASE MEMORY TO BE TESTED

00 ADD I T I ONAL STORAGE ABOVE I MEG

MOV

MOV

SAVE BASE_HI_BYTE IN DMA PAGE REG] STERS 3

MOV

OUT

CHECK FOR TOP OF MEMORY (FEOOOO) 16 MEG

CMP

.JE

SET ES AND OS REGISTERS TO MEMORY BLOCK

PUSH

POP

PUSH

POP

MOV

OUT

"OV

CALL

JZ

JMP

POP

POP

SET COUNT FOR 32K WORDS

WRITE THE CURRENT SIZE FOR (ADDRESS LINE 23-17 TEST! USED LATER

SUS

STOSW

ADD

PUSH

PUSH ox

BYTE PTR 64

8X

BYTE PTR GOT PTR

ES

BYTE PTR OS: (OS TEMP. BASE H I BYTE), I OH

BYTE PTR OS: (ES:TEMP. BASE::::H I ::::BYTE) , 10H

BYTE PTR OS: (ES TEMP. BASE HI BYTE) ,OFEH

KB_LOOP3 -

AL,31H

MFG_PORT ,AL

SAVE BASE MEMORY SIZE COUNT

SAvE STARTING AMOUNT OF MEMORY OK

SAVE COUNT OF b4K BLOCKS TO BE TESTED

SAVE BASE MEMORY SIZE COUNT

SAVE STARTiNG AMOUNT OF MEMORY OK

SAVE COUNT OF b4K BLOCKS TO BE TESTED

ES;OS TEMP.SEG LIMIT .MAX SEG LEN

ESIDS-TEMP.BASE LO WORD,O ­

BYTE PTR ES: (OS-TEQp.BASE HI BYTE).O

BYTE PTR ES: (OS:TEMP.DATA=ACC_RIGHTSI .CPLO_DATA._ACCESS

DMA_PAGE+3.AL

I INITIALIZE VALUES TO 010000

; HIGH BYTE OF LOW WORD OF SEGMENT

I LOW BYTE OF LOW WORD OF SEGMENT

; SET HIGH BYTE OF SEGMENT WORD

I HIGH BYTE OF SEGMENT

CX

BX

AX

AX

GET COUNT

, GET COUNT TE S TED

; RECOVER COUNT OF BASE MEMORY BLOCKS i SAVE BASE COUNT

BX

CX

: SAVE TESTED COUNT

; SAVE TOTAL COUNT

BYTE PTR OS; (OS TEMP.BASE HI BYTE) .AL

NEXT -

; MAX BASE COUNT

:-CONTINUE IF NOT DONE WITH BASE MEMORY

AX.64

AX

CX

<> <> <> <><><><><> <> <> <> <>

<><> CHECKPOINT 31

SKIP IF OK

GO PR I NT ERROR

TOP OF MEMORY?

EXIT NEXT TEST IF DONE

; POP CX TO GET AX

; RECOVER TESTED MEMORY

POINT TO BEGINNING OR A BLOCK

WR I TE THE CURRENT SIZE

AT THE STARTING ADDRESS

ADVANCE COUNT TO NEXT BLOCK

SAVE TESTED MEMORY

SAVE LOOP COUNT

DISPLAY "OXXXX OK~ MESSAGE

5-62

TEST2

.

-.

06-10-85

IBM Personal Computer MACRO Assenlbler

TEST2 ----

Version 2.00

06/10/85 POST TESTS AND INITIALIZATION ROUTINES

571

572

573

574

575

57'

577

57.

57'

5.0

5.'

5.2

5.3

5 ••

5.'

5 ••

5.7

5 ••

5.'

5.0

5"

5'2

5'3

5"

5"

596

5.7

5'.

5"

.00

'0 I

.02

.03

.0.

0204

0205

0206

59

49

E3 03

0208

0209

51

EB 98

02DB

0208

020C

58

58

0200

02EO

B9

E8

4088

0000 E

02E3

02E5

02E6

02EC

6A

01

261

26:

08

C6

C1

02F3

02F5

02F1

02F9

02FB

2A

E6

E6

80

E6

CO

85

86

01

84

06 0064

06 0062

00

0000

02FO

02FD

02FF

0301

80

E6

26:

33

80

80 06 0064 01

KB_LOOP3:

POP

POP

; - - - - ­

; - - - - ­

; - - - - ­

POP

OEe

.JCXZ

PUSH

JMP

MOV

CALL

PUSH

POP

MOV

MOV

5U8

OUT

OUT

MOV

OUT ex ex

KB_LOOP3

CX

E2'

AX

AX

ADORES S L I "IE 16-23 TEST

INITIALIZE OS DESCRIPTOR

AL,AL

DMA PAGE+4.AL oMA-PAGE+5,AL

AL,OIH

OMA_PAGE+3,AL

END MA IN TEST LOOP

CLEAR MAX I MUM BLOCK COUNT

CLEAR BASE SIZE COUNT FROM STACK

ADDRESS TEST VALUES ARE IN STACK

LET FIRST PASS BE SEEN

COUNT FOR 250 MS FIXED TIME DELAY

ALLOW S I X D I SPLAY REFRE SH CYCLES

BYTE PTR GOT PTR

ES -

BYTE PTR ES: (OS TEMP.8ASE HI BYTE) ,0

ES;OS_TEMP.SASE::::LO_WORO,O-­

TEMPORARY SEGMENT SAVE IN DMA PAGE REGISTER

POINT TO NEXT BLOCK OF 64K

MOV

OUT

ADD

CX,I6511

WAITF

RECOVER 64K BLOCK COUNT

DECREMENT BLOCK COUNT FOR LOOP

CONT I NUE TO NEXT TEST I F DONE

SAVE LOOP COUNT

LOOP TI LL ALL MEMORY CHECKED

HIGH 8YTE OF LOW WORD OF SEGMENT

LOW 8YTE OF LOW WORD OF SEGMENT

SET HIGH BYTE OF SEGMENT WORD

HIGH BYTE OF SEGMENT

AL,l3H ; <><><><><><><><><><><><>

MFG PORT ,AL ; <><>

BYTE" PTR ES: lDS_TEMP.8ASE_HI_BYTEI ,01

CHECKPOINT 33 <><>

0301

0300

030F

0310

031 I

0312

0313

0314

0315

031A

031 C

031C

0322

0322

0326

0328

032A

'4'

'47

.4•

•••

.50

•••

•• 2

032C

032E

032F

0331

0333

0335

0337

0339

033C

033F

.70

."

'72 .7.

.75

.77

.79

•• 0

•••

" 2

•••

• • 7

...

••• ...

0340

0341

0342

0343

0345

0341

0349

0348

0340

034F

0350

0351

0354

0355

0356

0359

035A

0358

0350

035E

•• 0

•••

•• 2

•• 3

•••

0360

0360

0362

'30 .3'

.32

.33

.3.

.37

'3 • ...

• •2

"3

.,0

."

" 3

.,.

.,.

."

.,9

.2.

'22

'23

'2'

.2.

'29

E6

BO

E6

26:

71

80

13

3E 0064 OA

59

58

58

50

53

51

26:

12

38

06

06 0064

261 C6

261 AO

84

3C

14

FE

34

6A

IF

2B

60

FF

88 15

88 F1

2B

89

CO

05

34

80

06 0064

0064

B9

E8

59

58

50

51

38

8B

15

1A69

0000

C2

C2

IE

E

E4

24

15

61

CO

18

59

58

05

50

51

E8

59

49

E3

0040

099F

03

R

51

EB 90

10

; - - - - ­

NEXT A2:

MOV

NEXT_A:

MOV

; - - - - -

; - - - - -

; - - - - -

MOV

CALL

CX,6761

WAITF

POP CX

AX POP

PUSH

PUSH

AX

CX

AX,DX CMP

.

MOV

JNZ

AX,OX

E21 A

CHECK FOR CHECK PAR I TV

'N

ANa

JNZ

AL,PORT B

AL,PARlfY_ERR

E21A

1-----

CHECK FOR END OF BASE NENORY TO 8E TESTED

CMP

..JA

POP

POP

POP

PUSH

PUSH

PUSH

CMP

..JB

DO ADD 1T IONAL STORAGE ABOVE I MEG

DMA PAGE REG I STERS 3

OUT

CHECK FOR TOP OF MEMORY (FEOOOO) 16 MEG

CMP

JZ

SET OS REGISTER

PUSH

POP

SUB

MOV

MOV

SUB

MOV

POP

POP

ADO

PUSH

PUSH

CALL

POP

OEC

..Jcxz

PUSH

JMP

KB LOOP 3:

-MOV

OUT

8YTE PTR ESIIDS TEMP.BASE HI BYTEI,OAH

NEXT_A ;-CONTINUE IF ABOVE I MEG

CX

BX

AX

AX

; GET COUNT

; GET COUNT TESTED

; RECOVER COUNT OF BASE MEMORY 8LOCKS

; SAVE BASE COUNT

BX

CX

; SAVE TESTED COUNT

; SAVE TOTAL COUNT

BYTE PTR ESI (OS TEMP.BASE HI BYTE) ,AL

NEXT_A -

; MAX BASE COUNT

;-CORTINUE IF NOT DONE WITH BASE MEMORY

BYTE PTR ES: (DS_TEMP.BASE_HI_BYTEl ,tOH

AL,BYTE PTR ES: /OS_TEMP.BASE_HI_BYTE)

AL,OFEH

K8_LOOP_3

BYTE PTR OS TEMP as

Dl,OI

DX.DS:

[or 1

SI,DJ

AX.AX lol},AX

ALLOW 01 SPLAY TIME TO D I SPLAY MESSAGE AND REFRESH TO RUN

CX

AX

AX,64

AX

CX

PRT_OK

CX

CX

KB_LOOP _3 ex

E2' A

AL,34H

MFG_PORT, AL

I SAVE THE HIGH 8YTE OF SEGMENT

; FOR POSSIBLE ERROR

; TOP OF MEMORY?

; GO NEXT TEST IF' IT IS

; POINT TO START OF BLOCK

; GET THE VALUE OF THIS BLOCK

; SET S I FOR POSS I BLE ERROR

; CLEAR MEMORY LOCATION

COUNT FOR 102 loiS FIXED TIME DELAY

ALLOW FI VE D I SPLA Y REFRESH CYCLES

GET THE LOOP COUNT

RECOVER TESTED MEMORY

SAVE TESTED MEMORY

SA VE LOOP COUNT

DOES THE BLOCK 10 MATCH

GET THE BLOCK 10 FOR POSS I BLE ERROR

GO PR I NT ERROR

CHECK FOR 1/0 OR PARITY CHECK

STRIP UNWANTED BITS

EXIT IF PARITY ERROR

POP CX TO GET AX

RECOVER TESTED MEMORY

.4K I NCRENENTS

SAVE TESTED MEMORY

SAVE LOOP COUNT

DISPLAY OK MESSAGE

RECOVER 64K BLOCK COUNT

LOOP TILL ALL MEMORY CHECKED

CONT INUE

SAVE LOOP COUNT

CONTINUE TILL DONE

BACK TO REAL MODE MEMORY TESTS DONE

<><><> <><><> <><> <><><><>

<><> CHECKPO I NT 34 <><>

TEST2 5-63

IBM Personal Computer' MACRO Assembler Version 2.00

TEST2 ---06/10/85 POST TESTS AND INITIALIZATION ROUTINES b85

686 0364 E9 0000 E b81 b88 b89 b90 b91 b92

693 0367 E6 62

694 0369 8A C4

&95 0368 E6 83

696 0360 8B C6

697 036F E6 86

698 037 I 86 EO

699 0373 E6 65

700

101

102

703 0375 2B F6

704 0311 A8

705 0318 E4 61

106 037A E6 88

101 037C OC OC

708 037E E6 61

709 0360 24 F3

7 I 0 0382 E6 61

111

112

113

714 0384 58

115 038558

716 0386 58

717 0387 C I E3 06

116 038A 2B C3

719 038C

720

721

13 11

122

123 038E 6A 18

12' 0390 IF

125

72b 0391 03 C3

727 0393 A3 0013 R

728

729

130

131 0396 B8 8383

132 0399 E8 0000 E

133 039C 24 7F

134 039E 86 C4

135 03AO E8 0000

13b 03A3 33 CO

E

131 03A5

138 03A5 8B C8

139 03A1' 80 Bl

140 03A9 E8 0000 E

141 03AC 8A EI

142 03AE BO BO

143 03BO E8 0000 E

144

145

14b

747 0383 B8 038F

148 038& E8 0000 E

149

150

151

152 0389 E9 0000 E

1-7

06-10-85

J"P PROC _SHUTDOWN

I BACK TO REAL MODE

; NExT TEST VIA ,JUMP TABLE ISHUT21

E21 A:

E211 :

PRINT FAILING ADDRESS AND XOR'ED PATTERN IF DATA COMPARE ERROR

USE DMA PAGE REG I STERS AS TEMPORARY SAVE AREA FOR ERROR

SET SHUTDOWN 3

OUT

"OV

OU1

"OV

OUT

XCHG

OUT

DMA PAGE+l,AL

AL,AH

DMA PAGE+2, AL

AX,SI

DMA PAGE+5,AL

AH,AL

DMA_PAGE+4,AL

SAVE FAILING BIT PATTERN (LOW BYTE)

SAVE HIGH 8YTE

GET THE FAILING OFFSET

CLEAR 110 CHANNEL CHECK OR RIW PAR I TY CHECK

WRITE TO FAILING BLOCK SUB

STOSW

IN

OUT

OR

OUT

AND

OUT

SI,SI

AL,PORT B

DMA PAGE+7,AL

AL, RAM PAR OFF

PORT e"7AL -

AL,RAM PAR ON

PORT_8:AL ­

1----GET THE LAST OF GOOD MEMORY

GET PARITY CHECK LATCHES

SAVE FOR ERROR HANDLER

TOGGLE lID-PARITY CHECK ENABLE

TO RESET CHECKS

POP

POP

POP

SHL

SUB

JAE

AX

AX

BX

BX,6

AX,8X

E211

ELSE SET BASE MEMORY SIZE

CLEAR BLOCK COUNT

GET THE LAST OF GOOD MEMORY

GET BASE MEMORY COUNTER

CONVERT TO MEMORY SIZE COUNTS

COMPARE LAST GOOD MEMORY WI TH BASE

IF A80VE OR EQUAL, USE REMA I NDER IN

CMOS_U_M_S_ (HILI

PUSH

POP

ADD

NOV

BYTE PTR RSDA PTR

OS -

AX,8X

...MEMORY_SIZE,AX

MOV

CALL

AX,3*H+CMOS SHUT DOWN+NMI

CMOS_WR I TE -

SHUTDOWN

..IMP PROC_SHUTDOWN

SET THE DATA SEGMENT

I N PROTECTED MODE

CONVERT 8ACK TO LAST WORK ING MEMORY

TO INDICATE HOW MUCH MEMORY WORKING

RESET 512K --> 640K OPT I ON I F SET

MOV

CALL

AND

XCHG

CALL

XOR

AX,X* (CMOS INFOI28+NMI)

CMOS READ -

AL, NOT M640K

AL, AH

CMOS WRITE

AX,AX

ADDRESS OPT IONS I NFORMAT I ON 8YTE

READ THE MEMORY INFORMATION FLAG

SET 640K OPT I ON OFF

MOVE TO WORK REGI STER

UPDATE STATUS IF IT WAS ON

CLEAR VALUE FOR EXTENSION MEMORY

SAVE ADJUSTED MEMORY SIZE MOV

MOV

CALL

MOV

MOV

CALL

CX,AX

AL,CMOS U M S HI+NMI

CMOS WRITE -

AH,CC

AL,CMOS U M S LO+NMI

CMOS_WRITE -

SAVE THE HIGH BYTE MEMORY SIZE

GET THE LOW BYTE

DO THE LOW BYTE

WRITE IT

SET SHUTDOWN 3

ADDRESS FOR SHUTDOWN RETURN

SET RETURN 3

5-64 TEST2

IBM Peraonal Comput.er MACRO AasembL.... Version 2.00

TEST2 - - - - 06/10/85 POST TESTS AND INITIALIZATION ROUTiNES

753

75'

755

75.

757

758

75.

7.0

7.'

7.2

7.3

7••

7.5

7 ••

7.7

7.8

7••

770

771

772

773

77'

".

777

"8

".

780

78'

782

783

7 • •

785

7 ••

7.7

78.

78.

7.,

7.2

7.3

7 • •

7.5

7 ••

7.7

7 ••

7 •• .0,

802 .0.

• 05

80.

807

808 03SC

809 03SC E8 0000 E

. , 0

8"

812 03eF C6 06 0016 R 01

813 03C4 80 00

814 03C6 E8 0000 E

815 03C9 80 OA

816 03ee E8 0000 E

811 C3eE E4 84

818 OlOO E8 0000 E

819 0303 E4 85

820 0305 E8 0000 E

821 0308 E4 ~6

822 030A E8 0000 E

823 0300 80 20

824 O:3DF E8 0000 E

625 03E2 E4 83

826 03E4 E8 0000 E

827 03E7 E4 82

828 03E9 E8 0000 E

82 •

• 30

.3'

832 03EC E4 80

833 03EE 3e 33

834 03FO BE 0000 E .3.

03F3 7-4 OA

837 03F5 BE 0000 E

838 03F 8 3e 32

839 03FA 14 03

8.0

841 03FC BE 0000 E

842 03FF

843 03F"F E8 0000 E

,.5

0402 E4 88

•••

8.7

848 0404 A8 80

849 0406 74 08

850

B51 0408 50

852 0409 E8 098F R

853 040C BE 0000 E

85-4 040F E8 0000 E

855 0412 58

856 0413

857 0413 A8 40

858 0415 14 09

8 ••

860 0417 E8 098F R

861 04111 BE 0000 E

862 0410 E8 0000 E

863 0420

8 ••

'-8

06-10-85

PAGE

;

- -

--

- - - - -

------------

~

MEMORY ERROR REPORTING

- -

----------

- - - - - - - -

--------

- - - - - -

--

-

---

-

--­

IR/WI MEMORY OR PARITY ERRORS)

DESCRIPTION FOR ERRORS 201 (CMP ERROR OR PARITY)

OR 202 (ADDRESS LINE 0- I 5 ERROR)

"AABBCC DDEE 201M (OR 202)

AA=HIGH BYTE OF 24 BIT ADDRESS

BB=MIDDLE BYTE OF 24 BIT ADDRESS

CC .. LOW BYTE OF 24 BIT ADDRESS

DDcHIGH BYTE OF XOR FAILING BIT PATTERN

EE=LOW BYTE OF XOR FAILING BIT PATTERN

DESCRIPTION FOR ERROR 202 (ADDRESS LINE 00-151

A WORD OF FFFF IS WRITTEN AT THE FIRST WORD AND LAST WORD

OF EACH 64K BLOCK WITH ZEROS AT ALL OTHER LOCATiONS OF THE

BLOCK. A SCAN OF THE BLOCK I S MADE TO INSURE ADDRESS LINE

0-15 ARE FUNCTIONING.

DESCRIPTION FOR ERROR 203 (ADDRESS LINE 16-23)

AT THE LAST PASS OF THE STORAGE TEST, FOR EACH BLOCK OF

64K, THE CURRENT STORAGE SIZE (10) IS WRITTEN AT THE FIRST

WORD OF EACH BLOCK. IT IS USED TO FIND ADDRESSING FAILURES. I

-AABBCC oOEE 203 M

SAME AS ABOVE EXCEPT FOR DDEE

GENERAL OESCRIPTION FOR BLOCK ID (ODEE WILL NOW CONTAINED THE 10)

DD .. H I GH BYTE OF BLOCK 10

EE=LOW BYTE OF BLOCK 10

BLOCK

0000

0040

/I

0200

10 ADDRESS RANGE

000000

010000

--> OOFFFF

-->

0 I FFFF

090000 --> 09FFFF (512->576K) IF 640K BASE

100000 --> 10FFFF (1024->1088K) IF 512K BASE

EXAMPLE (640K BASE MEMORY + 51 2K 110 MEMORY

=

I 152K TOTAL)

NOTE: THE CORRECT BLOCK 10 FOR THIS FAILURE IS 0280 HEX.

DUE TO AN ADDRESS FAILURE THE BLOCK 10+128K OVERLAYED

THE CORRECT BLOCK 10.

00640K OK

10000 0300 202

<-- LAST OK MEMORY

<-ERROR DUE TO ADDRESS FAILURE

IF A PARITY LATCH WAS SET THE CORRESPONDING MESSAGE WILL DISPLAY. I

"PARITY CHECK I" (OR 2)

OMA PAGE REGISTERS ARE USED AS TEMPORARY SAVE AREAS FOR SEGMENT

; OESCR I PTOR VALUES •

;

- -

--------

- - - - - - - - - - - - - - - -- - - - - - - - -

-

- - - -

---

- - - - - - -

-

-

---

-

----

- - - - - --­

SHUT3:

CALL DDS

ENTRY FROM PROCESSOR SHUTDOWN 3

SET REAL NODE DATA SEGMENT

; - - - --

"OV

"OV

CALL

OOV

CALL

'N

CALL

'N

CALL

'N

CALL

"OV

CALL

'N

CALL

'N

CALL

<><> MEMORY FA I LED <><> tlMF"G ERR FLAG+l,MEM FAIL; CLEAR AND SET MANUFACTURING ERROR FLAG

AL.CR CARR I AGE RETURN

PRT HEX

LINE FEED AL.LF

PRT HEX

AL,DNA PAGE+3

XPC BYTE

~~CD~~T~AGE+4

GET THE HIGH BYTE OF 24 BI T ADDRESS

CONVERT AND PR I NT CODE

GET THE MIDDLE BYTE OF 24 BIT ADDRESS

GET THE LOW BYTE OF 24 BIT ADDRESS AL,DMA PAGE+5

XPC BYTE

AL.'

PRT HEX

AL,15MA PAGE+2

XPC BYTE

AL,DMA PAGE+'

XPC_BYTE

SPACE TO MESSAGE

GET HIGH BYTE FAILING BIT PATTERN

CONVERT AND PRINT CODE

GET LOW BYTE FAILING BIT PATTERN

CONYERT AND PR I NT CODE

CHECK FOR ADDRESS ERROR

'N

COP

"OV

JZ

"OV

COP

JZ

AL,MFG PORT

AL,33H-

SI,OFFSET E203

ERR2

SI,OFFSET E202

AL,32H

ERR2

GET THE CHECKPO I NT

IS IT AN ADDRESS FAILURE?

LOAD ADDRESS ERROR 16->23

GO IF YES

LOAD ADDRESS ERROR 00-> 15

GO I F YES

S I ,OFFSET E201 SETUP ADDRESS OF ERROR MESSAGE "OV

ERR2:

1-----

NO' _Mil

CALL

'N

01 SPLAY "PAR I TY CHECK

TEST

JZ

PUSH

CALL

"OV

CALL

POP

TEST

JZ

E MSG

AL.DMA_PAGE+7

AL,PAR I TY_CHECK

N"' -

AX

"'

PADING

51 ,OFFSET 01

P MSG

AX

AL,IO_CHECK

NO' "2

PR I NT ERROR MESSAGE

GET THE PORT_B VALUE

,"

ERROR MESSAGES

CHECK FOR PLANAR ERROR

SK I'P IF NOT

SAVE STATUS

I NSERT BLANKS

PLANAR ERROR, ADDRESS "PARITY CHECK o

I SPLAY MPARITY CHECK

,"

MESSAGE

AND RECOVER STATUS

,

110 PARITY CHECK

SKIP IF CORRECT ERROR DISPLAYED

,"

N"'

"'2:

CALL

OOV

CALL

PAD ING

S I • OFFSET 02

P _MSG

I NSERT BLANKS

ADDRESS OF "PARITY CHECK 2" MESSAGE

DISPLAY "PAR ITY CHECK 2" ERROR

CONTINUE TESTING SYSTEM

....

TEST2 5-65

IBM Personal Computer MACRO Assembler V.rslon 2.00

TEST2 ---06/10/85 POST TESTS ANO INITIALIZATION ROUTINES

1-9

06-10-85

8 • •

8 ••

8.7

868 0420

8.9

B70

871

872

873

87'

875

87.

8 "

878

879

BBO

890

891

B92

B93

89.

895

89.

897

898

899

88'

B82

883

88.

88.

88.

887

888

BB9

900

9"

902

903

90'

.

.,2

905

'0.

907

.10

"

.,.

.,.

'20

0420 E9 0000 E

921 0423 E8 0000 E

922 0426 E4 80

923 0428 3C 35

924 042A BE 0000 E

925 0420 14 00

926 042F BE 0000 E

927

928 043280 OE 0016 R 02

'29

.30

931 0431 E8 0000 E

932 043A EB 08 .3.

043C E8 0000 E

935 043F 80 OE 0016 R 04

93.

'37

938

93'

940 0444 E8 0000 E

941 0441 2B CO

942 0449 A3 0011 R

943 044C B9 OOOE

944 044F SA 0082

945 0452

946 0452 2A CO

950

..

947 0454 EE

948 0455 42

949 0456 E2 FA

,

PAGE

1----ENTRY FROM SHUTDOWN

SHUT2: j

:

-

--- - - --- -

-------

-- -- - - -

- -

- ------- --- - - - - --- --------- -­

TEST .20

I ADDITIONAL PROTECTED (VIRTUAL MODE) TEST l DESCRIPTION

; THE PROCESSOR IS PUT IN PROTECTED MODE AND

THE FOLLOWING FUNCTIONS ARE VERIFIED

: -----­

!. VER I FY PROTECTED MODE

THE MACHINE STATUS IS CHECK FOR VIRTUAL MODE

2. PROGRAMMED I NTERRUPT TEST

AN PROGRAMMED INTERRUPT 32 I S I SSUED AND

AND VERIFIED

3. EXCEPT I ON INTERRUPT 13 TEST

A DESCR I PTOR SEGMENT LIM I TIS SET TO ZERO

AND A WRITE TO THAT SEGMENT IS ATTEMPTED

AN EXCEPT I ON 13 I S EXPECTED AND VER I F I ED

4. LOT/SOT LTR/STR TEST

LOAD LOT REG I STER AND VER I FY CORRECT

LOAD TASK REG I STER AND VER I FY CORRECT

THEY ARE VERIFIED VIA THE STORE INSTRUCTION

THE CONTROL FLAGS OF THE 286 FOR DIRECTION

ARE VER IF! ED V I A THE STD AND CLD COMMANDS

IN PROTECTED MODE

BOUND INSTRUCTION TEST (EXCEPTION lNT 5~

CREATE A SIGNED ARRAY INDEX WITHIN AND

OUTSIDE THE LIMITS. CHECK THAT NO EXC INT

IF WITHIN LIMIT AND THAT AN EXC INT 5

OCCURS I F OUTS I DE THE LI MITS.

1. PUSH ALL POP ALL TEST

SET GENERAL PURPOSE REGISTERS TO DIFFERENT I

VALUES, I SSUE A PUSH ALL, CLEAR THE REG I STERS:

THEN I SSUE A POP ALL AND VER I FY CORRECT. :

8. CHECK THE VERR/VERW INSTRUCTIONS

THE ACCESS BYTE I S SET TO REAO ONLY THEN TO

A WRITE ONLY AND THE VERR/VERW INSTRUCTIONS

ARE VERIFIED.

9. CAUSE AN INTERRUPT 13 VIA A WRITE TO A

READ ONL'( SEGMENT

10. VER I FY THE ARPL I NSTRUCTI ON FUNCTI ONS

SET THE RPL F'I ELO OF A SELECTOR AND

VER 1FY THAT CURRENT SELECTOR RPL I S SET

CORRECTL'( •

11. VERIFY THE LAR INSTRUCTION FUNCTIONS

12. VERIFY THE LSL INSTRUCTION FUNCTIONS

13. LOW MEG CH I P SELECT TEST

JMP POST3 GO TEST THE 286 PROTECTED MODE

FAILURE ENTRY FROM A SHUTDOWN

SHUTll CALL

IN

CM.

MDV

JZ

SHUT7A: MOV

DR

DDS

~t: ~~~_PORT

SI,OFFSET El09

SHUT78

SI,OFFSET El04

ESTABLISH THE DATA SEGMENT

CHECK FOR CH I P SELECT ERROR

PR J NT ERRDR 109

GO IF NOT

PROTECTED MODE FA I LEO

<><><> <> <> <> <> <><><> <><> <> <> <>

<><> VIRTUAL MODE FAILED <><>

PRINT MESSAGE CALL

JM.

SHUT1B: CALL

E MSG

SHORT SHUT6

E_MSG ; PRINT MESSAGE

<><><> <> <> <> <> <><> <><> <> <> <> <>

<><> LOW MEG CH I P SELECT

1-----

SHUT6:

PROTECTED MODE TEST PASSED ENTRY FROM A SHUTDOWN

CALL

5U8

MOV

MOV

MOV

CLR LOOP:

SUB

OUT

INC

LOOP

005

AX,AX

WORD PTR OKS FLAG, AX

CX,OEH -

OX ,DMA_PAGE+ 1

AL,AL

DX.AL

DX

CLR_LOOP

PROTECTED MODE TEST PASSED

CLEAR KEYBOARD STATE FLAGS

CLEAR PAGE REG I STERS

.55

'5.

'5'

958

959

960 0458 BO 35

961 045A E6 80

9.2

963 045C F6 06 0012 R 20

964 0461 15 03

965 0463 E9 0516 R

966 0466 80 3E 0012 R 64

961 046B 15 03

968 0460 E9 0516 R

969 0410 BO 36

910 0412 E6 80

971 0414 FA

912 041581 3E 0012 R 1234

913 041B 14 11

914 0410 80 3E 0072 R AA

975 0482 14 10

916 0484 BO AE

911 0486 E8 0000 E

918 0489 81 04 j

TEST. 21

KEYBOARD TEST

: DESCR I PTI ON

RESET THE KEYBOARD AND CHECK THAT SCAN

CODE "AA" 1S RETURNED TO THE PROCESSOR.

CHECK FOR STUCK KEYS.

F1_A:

F1_B:

MDV

OUT

TEST

"NZ

JM.

CMP

"NZ

JMP

MOV

OUT

CLI

CM.

JZ

CM.

JZ

MOV

CALL

MOV

AL,35H

MFG_PORT. AL

<> <><> <> <><> <> <><> <><> <>

<><> CHECKPO I NT 35 <><>

Q!lMFG TST, MFG LOOP

F1 A-

MANUFACTUR ING BURN I N TEST MODE?

F1; YES SK I P KEYBOARD TEST

BYTE PTR "RESET FLAG. 064H ; MANUF ACTUR I NG RUN I N MODE

7

F1 B

F7YES SKIP KEYBOARD TEST

AL,361-1

MFG_PORT, AL

<> <><><><><><><><><><><>

<><> CHECKPO I NT 36 <><>

_RESET FLAG,1234H

GIO

SOFT RESET1

BYTE PTR IllRESET FLAG,KB OK : CHECK FOR AA ALREADY RECEIVED

G I 0 GO I F YES

AL,ENA KBD

C8042 -

BH,4

; ENABLE KEYBOARD

; TRY 4 TIMES

5-66 TEST2

IBM Personal Computer MACRO Assembler Version 2.00

TEST2 ---06/10/85 POST TESTS AND INITIALIZATION ROUTINES

919 048B E8 0000 E

980 048E 75 04

98 t 0490 FE CF

982 0492 75 F7

983 0494 BO AD

984 0496 E8 0000 E

985 0499 E4 60

986 049B BO EO

987 0490 E8 0000

988 04AO E8 0000

989 04A3 E4 60

990 04A5 A8 01

991 04A7 74 OA

992

993 04A9 80 OE 0016 R 08

99.

995 04AE BE 0000 E

996 04Bl EB 60

997 04B3 E8 0000 E

998 04B6 E3 29

999 04B8 BO 37

1000 04BA E6 80

1001 04BC 80 FB AA

1002 04BF 75 20

1003

1004

1005

1006 04Cl BO 38

1007 04C3 E6 80

1008

1009 04C5 BO AE

1010 04C7 E8 0000 E

101 1 04CA B9 19E4

1012 04CO E8 0000 E

1013 0400 E4 64

10140402 A8 01

1015 0404 7440

1016

1017 0406 BO 39

10180408 E6 80

1019

1020 040A E4 60 t 021 040C E8 0000 E

1022 040F EB 2A

1023

1024

1025

1026 04EI FA

1027 04E2 BO AB

1028 04E4 E6 64

1029 04E6 2B C9

1030 04E8 B7 05

1031 04EA E4 64

1032 04EC A8 0 I

1033 04EE El FA

1034 04FO 75 09

1035 04F2 FE CF

1036 04F4 75 F4

1037 04F6 BE 0000 E

1038 04F9 EB 18

1039 04FB E4 60

1040 04FD 3C 00

1041 04FF 74 OA

1042050180 OE 0016 RIO

1043

1044 0506 BE 0000 E

1045 0509 EB 08

1046 050B BE 0000 E

1047

1048 050E 80 OE 0016 R 20

1049

1050

1051 0513 E8 0000 E

1052

1053

1054

10550516 BO 3A

1056 0518 E6 80

1057

1058 051A BO FF

1059 05 I C E6 21

1060 051E FA

1061 051F BO 60

1062 0521 E8 0000 E

1063 0524 BO 45

1064 0526 E6 60

1065

1066

1067

1068 0528 B4 DO

1069 052A E8 0000 E

1070

1071

1072

1073 0520 2B CO

1074 052F 8E CO

1075 0531 B9 0008

1076 0534 OE

1077 0535 IF

1078 0536 BE 0000 E

1079 0539 BF 0020 R

1080 053C A5

1081 0530 47

1082 053E 47

1083 053F E2 FB

1084

1085

1086

1087

1088 0541 2B CO

1089 0543 8E CO

1090 0545 B9 0008

1091 0548 OE

1092 0549 IF

1-10

06-10-65

LOOPI:

GIO:

CALL

JNZ

DEC

JNZ

"DV

CALL

IN

"DV

CALL

CALL

IN

TEST

JZ

DR

Gil:

F6:

F6A:

F6B:

F6C:

OBF 42

Gl0-

BH

LOOPI

AL,OIS KBO

C6042 ­

AL,PORT A

AL,KYBO-CLK DATA

C8042 -

OBF 42

AL,PORT A

AL,KYBO-CLK

Gil

CHECK FOR OUTPUT BUFFER FULL

GO I F BUFFER FULL o

I SABLE KEYBOARD

FLUSH

GET THE CLOCK AND OAT A LINE S

WA I T FOR OUTPUT BUFFER FULL

GET THE RESULTS

KEYBOARD CLOCK MUST BE LOW

"OV

J"P

CALL

JCXZ

"OV

OUT

C"P

JNE

S I ,OFFSET E304

SHORT F60

KBO RESET

Fb -

AL,37H

MFG PORT ,AL

BL,KB OK

Fb -

<><> <> <> <> <> <><><><><> <> <> <> <>

<><> KEYBOARD CLOCK HIGH <><>

DISPLAY 304 ERROR

REPORT ERROR

I SSUE RESET TO KEYBOARD

PR' NT ERROR MESSAGE I F NO 1NTERRUPT

<><> <><> <> <><> <> <> <> <><>

<><> CHECKPOINT 37 <><>

SCAN CODE AS EXPECTED?

NO 01 SPLAY ERROR MESSAGE

CHECK FOR STUCK KEYS

"OV

OUT

"OV

CALL

"OV

CALL

IN

TEST

JE

AL ,38H

MFG_PORT ,AL

AL ,ENA KBO

C8042 -

CX,6628

WAITF

AL,STATUS PORT

AL, OUT BUF FULL

F7 -

<><> <> <> <><><> <> <> <> <><>

<><> CHECKPOINT 36 <><>

ASSURE KEYBOARD ENABLED

I SSUE THE COMMAND

COUNT FOR 100 MILLISECONDS

DELAY FOR A WH I LE

CHECK FOR STUCK KEYS

OUT BUFFER FULL?

YES CONTI NUE TESTI NG

<><> <> <> <> <> <> <> <> <> <> <>

<><> CHECKPOINT 39 <><>

"DV

OUT

CLl

"DV

DUT

SUB

"OV

IN

TEST

LOOPZ

JNZ

DEC

JNZ

"OV

J"P

IN

C"P

JZ

OR

"DV

J"P

"DV

OR

AL,39H

MFG_PORT ,AL

IN

CALL

J"P

AL,PORT A

XPC BYTE

SHORT F6C

GET THE SCAN CODE

CONVERT AND PR I NT

CONT INUE

KEYBOARD ERROR TRY TO DETERMINE IF 8042 INTERFACE IS WORKING

AL,INTR FACE CK

STATUS PORT ,AL

CX ,CX ­

BH,05

AL,STATUS PORT

AL, OUT BUF FULL

F6A -

COMMAND TO 8042

WA I T FOR OUTPUT BUFFER FULL

8042 FINISHED TEST?

FbB

BH

Fb.

51 ,OFFSET E303

SHORT F60

AL,PORT A

AL,O -

I GO CHECK RESULTS

TRY AGAIN

INDICATE PLANAR FAILURE

(REMOVE KEYBOARD TRY AGAIN)

GET THE RESULTS OF INTERFACE TEST

IS THE INTERFACE OK?

FbC

(lMFG_ERR _FLAG+ I ,KY _SYS_FA I L ;

S I, OFFSET E303

;

<><><><><><><><><><><><>

<><> KEYBOAROI SYSTEM

; PLANAR FAILURE

SHORT F60

S I, OFFSET E30 I

; GO I F YES

; GET MESSAGE ADDRESS

<><> <> <> <> <> <> <><><> <> <> <>

<><> KEYBOARD FA I LED

F60:

F7:

;----­

;----­

CALL ; PR I NT MESSAGE ON SCREEN

INITIALIZE 8042 TO HONOR KEY LOCK

"OV

OUT

AL ,3AH

MFG_PORT ,AL

AL,OFFH

INTAO 1 ,AL

<><><><><><> <> <> <> <> <><>

<><> CHECKPOINT 3A <><> o

I SABLE INTERRUPTS "OV

OUT

CLl

"OV

CALL

"OV

OUT

AL,WRITE 8042 LOC

C8042 -

AL,45H

PORT_A ,AL

WR I TE 8042 MEMORY COMMAND

I SSUE THE COMMAND

SET SYSTEM FLAG OUTBUF INTERRUPT ­

PC 1 COMPATIBILITY

RESET INHIBIT OVER RIDE

OEGATE ADDRESS LINE 20

"OV

CALL

AH, 0 I SABLE B I T20

GATE_A20 -

SET COMMAND IN AH

I SSUE THE COMMAND

SETUP HARDWARE INTERRUPT VECTOR TABLE LEVEL 0-7

F7A:

SUB

MOV

MOV

PUSH

PDP

MOV

MOV

MOVSW

INC

INC

LOOP

AX,AX

ES,AX

CX, 08

CS

OS

S I ,OFFSET VECTOR TABLE

01 ,OFFSET (lINT_PTR

0 I

01

F7A

GET VECTOR COUNT

SETUP OS SEGMENT REG I STER

; SK I P OVER SEGMENT

SETUP HARDWARE INTERRUPT VECTORS LEVEL 6-15 (VECTORS START AT INT 70Hl

ASSUME ES:ABSO

SUB AX,AX

"DV ES,AX

CX,08 "DV

PUSH

POP

CS

DS

GET VECTOR COUNT

SETUP OS SEGMENT REG I STER

TEST2

5-67

1-1 I

06-10-85

IBM Pe,..sonel Contpute,.. MACRO AssembleI'"

TEST2 - - - 06/10/155

Ve,..slon 2.00

POST TESTS AND INITIALIZATION ROUTINES

1093 054A 8E 0000 E

1094 0540 8F 0 I CO R

1095 0550 A5

1096 0551 41

1091 Q552 41

10911 0553 E2 F8

1099

1100

1101

1102

1103055528 CO

11040551 liE 08

1105 0559 Cl Ob 0008 R 0000 E

1106 055F Cl 06 0014 R 0000 E

1101 0565 Cl 06 0062 R F600

1108

1109

1110

1111 0568 8F 0180

1112 056E 89 0010

1113 0511 Cl as

0000

1114051583 Cl 02

1126 0580 E6 21

1121 058F F8

1128

1129

1130

I 131 0590 8 I 3E 0012 R 1234

1132 0596 15 DE

1133 0598 B9 OOFF

I 134 059B BA 03F6

1135 059E 80 04

1136 05AO EE

131 05Al E2 FE

138 05A.3 2A CO

F7AII

;

-----

SET UP OTHER INTERRUPTS AS NECESSARY

F1A2:

I I 15 0578 E2 Fl

1'16

1117

1118

I I 19

1120 057A E8 0000 E

1121

1122 0570 F6 0& 0012

1123 0582 75 08

R 20

1124 0584 26: C7 06 0020 R 0000 E

1125 Q588 80 FE

F9;

;-----

MOV

MOV

MOVSW

INC

INC

LOOP

SI,OFFSET SLAVE VECTOR TABLE

01 ,OFFSET PSLAVE_INT_PTR

01

01

F1AI

ASSUME DSIA8S0

SUB AX,AX

"OV

"OV

"OV

"OV

ZERO RESERVED VECTORS

"OV

MOV

MOV

ADD

LOOP

TEST

"NZ

MOV

MDV

OUT

STI eMP

.JNZ

MDV

MDV

DI,E;OH-4

CX,I6

WORD PTR OS:[DII.O

01,2

F7AZ

CX ,OFFH oX,03F6H

AL,04H oX,AL

F. A

AL-;-AL

DX,AL

I SK I P OVER SEGMENT

: DS=O

OS,AX

:g~g ~i~ :7~i·t~~R~6~~~~TN~~T~~TS~R~~~

WORD PTR ClBASIC_PTR+2,OF600H

I

N!E:~Y~i

SCREEN

- ; SEGMENT FOR CASSETTE BASIC

FILL INTERRUPT 60 THRU & 1 WITH ZERO

CLEAR I & WORDS

PO I NT TO NEXT LOCAT I ON

SETUP TI MER 0 TO BLI NK LED IF MANUFACTUR 1 NG TEST MOOE

ASSUME DS:DATA

CALL DDS ; ESTA8LISH DATA SEGMENT

; MFG. TEST MODE?

WaR a PTR ES:$INT FTR,OFFSET BLINK INT I SETUP TIMER TO BLINK LED

AL,OFEH

INTAOI,AL

; ENABLE TIMER INTERRUPT

; ALLOW INTERRUPTS

I SSUE A RESET TO THE HARD FILE I F SOFT RESET

MOV

OUT

LOOP

SUB

OUT

_MFG TST, MFG LOOP

F9 -

PRESET FLAG,I234H

F9A -

SOFT RESET?

CONTINUE IF NOT

RESET

HOLD RESET

J REMOVE RESET

,

.. 139 05A5 EE ,.0

,.2 ;

-----

- - -

--------

-- - - - - - - - - - - - - - - - - - - - - -

----

- -

------------------­

; TEST.23

I ••

DISKETTE ATTACHMENT TEST

DESCRIPTION

CHECK IF IPL DISKETTE DRIVE IS ATTACHED TO SYSTEM. IF

ATTACHED, VERIFY STATUS OF NEC FOC AFTER A RESET. ISSUE

A RECAL1BRATE AND SEEK COMMAND TO FDC AND CHECK STATUS.

COMPLETE SYSTEM INITIALIZATION THEN PASS CONTROL TO THE

BOOT LOADER PROGRAM.

,..

150

151

152 05A6 80 3C

153 05A8 E6 80

F9A: MOV

OUT

AL,3CH

MFG_PORT .AL

<> <> <> <> <><><> <> <> <><><>

<><> CHECKPOINT 3C <><>

15'

155 05AA BO 02

156 05AC BA 03Fl

151 05AF EE

158 0580 F6 06 00 lOR 01

159 05B5 14 55

160 0591 F6 06 0012 R 20

161 059C 14 4E

162 058E

163 058E E4 21

164 05CO EB 00

165 05C2 24 BF

166 OSC4 E6 21

167 05C6 94 00

168 OSC8 8A 04

169 OSCA CD 13

110 05CC F6 C4 FF

I I I 05CF 15 25

112

11.

11.

115 OSOI 8A 03F2

1760504 BO lC

111 0506 EE

118 OS07 2B C9

119 0509 E8 0000 E

180

181 05DC 33 FF

1182 OSOE 85 01

1183 05EO C6 06 003E R 00

I 184 05E5 80 OE OOAO R 01

I 18S 05EA E8 0000 E

1186 05EO 72 01

1181 OSEF B5 22

1188 05Fl E8 0000 E

1189 05F4 13 09

1190 05F6

1191 05F6 80 OE 0016 R 40

1192

1193 05FB BE 0000 E

1194 05FE E8 0000 E

1195

1196

1197

11980601

1199 0601 80 26 OOAO R FE

1200 0606 80 OC

120 I 0608 8A 03F2

1202 060B EE

1203

1204

1205

120& ObOC Cb 06 006B R 00

FlO:

NOV

"OV

OUT

TEST

"Z

TEST

JZ

IN

"MP

AND

OUT

MDV

NOV

1NT

TEST

"NZ

AL,INTAOI '.2

AL,OBFH

INTAOI,AL

AH,O

DL,AH

I3H

AH,OFFH

Fl.

;-----

TURN DR I VE 0 MOTOR ON

F13:

F14:

XOR

"OV

NOV

OR

CALL

"C

"DV

CALL

OX,03F2H

AL,ICH

DX,AL ex,cx

WAITF

01,01

CH.I

PSEEK STATUS.O

PRTC WAIT FLAG.OJ

SEEK-

Fl.

CH,3-4

SEEK

SELECT DR I VE 0

SELECT TRACK I

INSURE RECAL I BRATE

NO REAL T [ME CLOCK. USE WA I T LOOP

RECALIBRATE 0 [SKETTE

GO TO ERR SUBROUT I NE I F ERR

SELECT TRACK 34

SEEK TO TRACK 34

FI4

-

SI.OFFSET E601

E_MSG

OK. TURN MOTOR OFF

OSK_ERR:

- ;

<> <> <> <> <><> <> <> <> <><><><>

<><> DISKETTE FAILED <><>

GET AODRESS OF MESSAGE

GO PR 1NT ERROR MESSAGE

;

-----

SETUP KEYBOARD PARAMETERS

FI51

NOV

MDV

OUT

SUB

CALL

"NC

OR

"OV

CALL

AND

"OV

NOV

OUT

MOV

AL,02H

OX,3F7H

DX,AL

BYTE PTR ClEQUIP FLAG,IH

FIS

ClMFG TST .MFG LOOP

FI5 -

TURN DR I VE 0 MOTOR OFF

PRTC WAIT FLAG,OFEH

AL,OCH -

DX,03F2H

DX,AL

SET DATA RATE TO 250 K BITS PER SECOND

DISKETTE PRESENT?

MFG JUMPER INSTALLED?

GO IF YES

DISK_TEST;

I/O DELAY

ENABLE 0 I SKETTE INTERRUPTS

RESET NEC FDC

SET FOR DRIVE 0

VERIFY STATUS AFTER RESET

STATUS OK?

NO FOC FAILED

GET ADDRESS OF FoC CARD

TURN MOTOR ON, ENABLE DMA, INTERRUPTS

WRITE FDC CONTROL REGISTER

WA I TF COUNT FOR O. 9SS SECONDS

WA I T I SECOND FOR MOTOR

ORO OFF:

ALLOW FOR RTC WA I T

TURN DR I VE 0 MOTOR OFF

FDC CONTROLLER ADDRESS

SET STRAY INTERRUPT FLAG = 00

5-68 TEST2

IBM Per-sonal Computer- MACRO AssemblerVersion 2.00

TEST2 - - - - 06/10/85 POST TESTS AND INITIALIZATION ROUTINES

1207 0611 BE OOIE R

1208061489 36 OOIA R

12090618 89 36 001C R

1210 061C 89 36 0080 R

1211 0620 83 C6 20

1212062389 36 0082 R

1213

1214

1215

12160627 BF 0078 R

1217 062A IE

1218 062B 07

1219 062C 88 1414

1220 062F AB

1221 0630 AB

1222

1223

1224

1225 0631 B8 0101

1226 0634 AB

1227 0635 AB

1228

1229

1230

1231 0636 E4 21

1232 0638 24 FE

1233 063A EB 00

1234 063C E6 21

1235

123b

1237

1238 063E F6 06 0012 R 20

1239 0643 75 03

1240 Ob45 E9 07 2E R

1241 0648

1242 0648 BO 8E

1243 064A E8 0000 E

1244

1245 0640 BE 0000 E

1246 0650 A8 80

1247 0652 75 07

1248

1249 0654 SE 0000 E

1250 0657 A8 60

1251 0659 74 09

1252 0658

1253 065B E8 0000 E

1254 o..65E 8 I CD 8000

1255 0662 EB 45

1256

1257

1258

1259 0664 B3 04

1260 0666 2B C9

1261 0668 BO 8A

1262 066A E8 0000 E

1263 0660 A8 80

1264 066F 75 IB

12650671 E2 F5

1266 0673 FE CB

1267 0675 75 EF

1268 0677 BE 0000 E

1269 067A E8 0000 E

1270

1271

1272

1273 0670 B8 OE8E

1274 0680 E8 0000 E

1275 0683 OC 04

1276 0685 86 C4

1277 0687 E8 0000 E

1278 068A E8 OE

1279

1280

1281

1282 068C 89 0320

1283 068F 80 8A

1284 0691 E8 0000 E

1285 0694 A8 80 j

286 0696 EO F7

1287 0698 E3 DO

1288

1289

1290

1291 069A

1292 069A BO 8E

1293 069C E8 0000 E

1294 069F A8 10

1295 06AI 74 06

1296

1297

1298

1299 06A3 BE 0000 E

1300 06A6 E8 0000 E

130 I

1302

1303

1304 06A9 80 3E 0015 R OC

1305 06AE BE 0000 E

1306 06BI 74 OA

1307

1308 ObB3 eo

3E 0015 R 00

1309 06B8 75 06

1310 06BA BE 0000 E

131106BD

1312 0680 E8 0000 E

1313

1314

1315

1316 06CO

1317 06CO BA 03FI

1318 06C3 EC

1319 06C4 24 F8

1320 06C6 3C 50

MOV

MOV

MOV

MOV

ADO

MOV

S I ,OFFSET CIIKS BUFFER

"'BUFFER HEAD,S f

CIIBUFFER-TAIL,SI

CIIBUFFER-START, S [

SI,32 -

CIIBUFFER_END. 5 1

;

-----

SET PRINTER TIMEOUT DEFAULT

SETUP KEYBOARD PARAMETERS

DEFAULT BUFFER OF 32 BYTES

MOV

PUSH

POP

MOV

STOSW

STOSW

OJ

OS

,OFFSET ,"PRINT TIM OUT; SET DEFAULT PR[NTER TIMEOUT

ES

AX,1414H

SET RS232 DEFAULT

-

DEFAUL T=20

MOV

STaSI\'

STOSW

"OV

TEST

JNZ

AX,010lH

ENABLE T I MER INTERRUPTS

IN

AND

JMP

OUT

AL,INTAOI

AL,OFEH

1·2

INTA01,AL

;

-----

CHECK CMOS BATTERY AND CHECKSUM

TEST

JNZ

JMP

OMFG TST ,MFG LOOP

Bl OK -

F15C

MOV

CALL

AL,CMOS DIAGl'NMI

CMOS_READ

SI,OFFSET EI61

AL,BAD BAT

Bl_ER -

"OV

TEST

JZ

SI.OFFSET E[62

AL,BAD CKSUM+SAO CONF[G

C_OK -

RS232 DEFAUL T=O I

ENABLE TIMER INTERRUPTS

1/0 DELAY

MFG JUMPER?

GO IF NOT

BYPASS IF YES

ADDRESS 0 I AGNOST [C STATUS 8YTE

READ I T FROM CMOS

LOAD BAD 8ATTERY MESSAGE 16 I

BATTERY BAD?

DISPLAY ERROR IF BAD

LOAD CHECKSUM BAD MESSAGE 162

CHECK FOR CHECKSUM OR NO 0 I SKETTE

SKIP AND CONTINUE TESTING CMOS CLOCK

ELSE 01 SPLAY ERROR MESSAGE

FLAG "SET SYSTEM OPTIONS" DISPLAYED

SKIP CLOCK TESTING IF ERROR

F _OK:

CALL

OR

JMP

E MSG

BP,08000H

SHORT H_OKIA

TEST CLOCK UPDAT! NG

MOV

SUB

MOV

CALL

TEST

JNZ

LOOP

DEC

JNZ

MOV

CALL

BL,04H

CX,CX

AL, CMOS REG Al'NM I

CMOS READ

AL,80H o

OK

E-OK

BL

°

OK

ST,OFFSET EI63

E_MSG

OUTER LOOP COUNT

I NNER LOOP COUNT

GET THE CLOCK UPDATE BYTE

CHECK FOR UPDATE IN PROGRESS

GO IF YES

TRY AGAIN

DEC OUTER LOOP

TRY AGAIN

PR I NT MESSAGE

;

-----

CHECK CLOCK UPDATE

G OK:

I-OK:

SET CMOS DIAGNOSTIC STATUS TO 04 (CLOCK ERRORI

MOV

CALL

OR

XCHG

CALL

JMR

AX. X ·CMOS 0 [AGl'NM I

CMOS READ-

AL,CMOS CLK FAIL

AL,AH -

CMOS WR [TE

SHORT H_OK

MOV

"OV

CALL

-.JCXZ

CX,800

AL,CMOS REG A+NM[

CMOS READ

TEST AL,80H

LOOPNZ I OK

F:OK

CHECK MEMORY SIZE DETERM[NED

SET CLOCK ERROR

GET THE CURRENT STATUS

SET NEW STATUS

GET STATUS ADDRESS AND SAVE NEW STATUS

MOVE NEW 0 I AGNOST I C STATUS TO CMOS

CONT INUE

LOOP COUNT

CHECK FOR OPPOSITE STATE

TRY AGA IN

PR I NT ERROR 1FT I MEOUT

CONFIGURATION

MOV

CALL

TEST

JZ

AL, CMOS_ 0 I AGl'NM I

CMOS READ

AL. W::::MEM_S [ZE

H_OK1A

1-----

MEMORY SIZE ERROR

"OV

CALL

S I ,OFFSET EI64

E_MSG eMP

JNZ

MOV

H_OK 181

CALL flMFG_ERR FLAG,OOH

J OK sT, OFFSET E50!

CHECK FOR COLOR CRT ADAPTER ERROR

; CONT I NUE IF NOT

CRT ADAPTER ERROR MESSAGE

E_MSG

;-----

CHECK FOR MULTIPLE DATA RATE CAPABILITY

MOV

IN

AND eMP

OX, 03F I H

AL,OX

AL. I I 1 I \ OOOB

AL,Ol010000B

1-12

06-10-85

CHECK FOR CRT ADAPTER ERROR

H OK IA: e"p

MOV

JZ

OMFG_ERR_FLAG,OCH

S I ,OFFSET E401

H_OK 18

GET THE STATUS BYTE

WAS -

00 IF YES

PRINT SIZE ERROR

DISPLAY ERROR

CHECK FOR MONOCHROME CRT ERROR

LOAD MONOCHROME CRT ERROR

00 IF YES

D/S/P DIAGNOSTIC REGISTER

READ D/S/P TYPE CODE

KEEP ONLY UNIQUE CODE FOR D/S/P

OISIP CARD MULT[PLE OATA RATE?

TEST2 5-69

IBM Personal Computer MACRO A •• embler Veraion 2.00

TEST2 ---06/10185 POST TESTS AND INITIALIZATION ROUTINES

1386

1387 0737 BO 90

1388 0739 E8 0000 E

1389 onc

24 OF

1390 013E 3A C4

1391 0140 14 01

1392

1393 0142 22 C4

1394 0744 15 03

1395

1396 0746 E8 0000 E

1391

1398

1399 0749

1400 0749 BO 3E

1401 014B E6 80

1402

1403 0140 BO 92

1404 014F E8 0000 E

1405 0752 3C 00

1406 0754 14 03

1401

1408 0156 E8 0000 E

1409

1410

1411

1412

1413

1414

1415

1416

14110759

1418 0759 F8

1419 075A BO 3B

1420 075C E6 80

1421 075E E8 0000 E

1422 0761 BO OA

1423 0763 E8 0000 E

1424 0766

1425

1426

1421

1428 0166 2A CO

1429 0768 E6 02

1430 076A E8 00

1431 076C E6 04

1432 016E BA C800

14330111

14340111 8E OA

1321 06C8 14 46

1322

1323 06CA BA 05Fl

1324 06CD EC

1325 06CE 24 FO

1326 0600 3C AD

1321 0602 14 2F

1328

1329 0604 B3 OF

1330 0606 2B C9

1331 0608 BA 01Fl

1332 060B

1333 060B EC

1334 060C A8 80

1335 06DE 14 DC

1336 06EO E2 F9

1331 06E2 FE CB

1338 06E4 15 F5

1339 06E6 24 DC

1340 06E8 14 26

1341 06EA EB 17

1342 06EC

1343 06EC BA 01F4

1344 06EF BO 55

1345 06Fl EE

1346 06F2 EB 00

1341 06F4 EC

1348 06F5 3C 55

1349 06Fl Hi OA

1350 06F9 BO AA

1351 06FB EE

1352 06FC EB 00

1353 06FE EC

1354 06FF 3C AA

13550701 14 00

1356

1351 0103

1358 0703 80 OE 0016 R 40

1359

1360 0708 BE 0000 E

1361 0708 E8 0000 E

1362 070E EB IE

1363

1364 OlIO

1365 0710 80 DE 008B R 01

1366

1361

1368

1369 0115 BO 3D

1310 0717 E6 80

1311 0719 E8 0000 E

1372

1373

1374

1315 011C E8 0000 E

1316 011F 8A 26 0091 R

1311 0123 OA E4

1378 0725 14 01

1379012180 OE 0010

1380 012C 84 FF

1381 012E

1382 072E 80 8E

1383 0730 E8 0000 E

1384 0733 A8 CO

1385 0735 75 22

1-13

06-10-85

J_OK 1:

J_OK2;

MOV

MOV

OUT

JMP

IN

CMP

JNZ

MOV

OUT

""P

IN

CMP

"Z

J_FAIL:

OR

IN

TEST

JZ

LOOP

DEC

JNZ

AND

JZ

JMP

"Z

MOV

IN

AND

CMP

"Z

MOV

SUB

MOV

J_OK3

DX,OSF1H

AL.DX

AL

I

1 1 1 10000B

AL

I

10 100000B

J_FAIL

BL ,OFH

CX,CX

DX,OIFIH

AL,DX

AL,080H

J OK2

J-OK 1

BL

J OKI

AL,OCH

J OK3

SHORT ,J_FA I L oX,IF4H

AL,055H

DX,AL '_2

AL,DX

AL ,055H

J FAIL

AL.OAAH

DX,AL '_2

AL,oX

AL.OAAH

J_OK3

I

IF SO JUMP

FIXED DISK DIAGNOSTIC REGISTER

READ F I XED 0 I SK TYPE CODE

KEEP ONLY UNIQUE CODE FOR F/o

F I XED 0 I SK ADAPTER ?

MUST BE COMBO ELSE ERROR

; OUTER LOOP COUNT IA 1 T FOR BUSY OFF

; HARD FILE STATUS PORT

GET THE STATUS

IS THE CONTROLLER BUSY?

CONT I NUE I F NOT

TRY AGAIN

DECREMENT OUTER LOOP

TRY AGAIN IF NOT ZERO

BITS 2 & 3

=

0 IF MULTI DATA CAPABLE

GO IF YES

NO MULTIPLE DATA RATE CAPABILITY

VERIFY MULTIPLE DATA RATE CAPABLE

WR I TE TO THE CYL I NDER BYTE

110 DELAY

CHECK DATA WRITTEN = DATA READ

GO IF NOT

WRITE ANOTHER PATTERN

110 DELAY

I S DATA PATTERN THE SAME?

GO IF SO

MOV

CALL

"MP

J_OK3:

OR

; - - - - -

ClMFG_ERR_FLAG+ 1 .0SK_FA IL;

5 I ,OFFSET E60 I

E MSG

SHORT F15C

<><><> <><><><><><><> <> <> <>

<><> DISKETTE FAILED

GET ADDRESS OF MESSAGE

GO PRINT ERROR t.!ESSAGE

SK I P SETUP I F ERROR

OLASTRATE. DUAL

INITIALIZE FLOPPY FOR DRIVE TYPE

I TURN ON DSP/COt.!80 FLAG

MOV

OUT

CALL

AL,3DH

MFG PORT ,AL

DSKETTE_SETUP

<><><><><><><><><><><><>

<><> CHECKPOINT 30 <><>

INITIALIZE FLOPPY

; - - - - -

FISC:

CHECK FOR 2ND DISKETTE DRIVE

CALL

MOV

OR

JZ

OR

MOV

MOV

CALL

TEST

JNZ

005

AH,.oSK STATE+ I

AH.AH -

AL,CMOS DIAG+NMI

CMOS READ

AL,BAO 8AT+8AO CKSUt.!

ROM_SCAN I -

INSURE DATA SEGt.!ENT

GET STATE OF SECOND DR I VE

I S THERE A DR I VE 2 ATTACHED?

FI5C ; SKIP IF NOT

8YTE PTR "EQUIP FLAG,40H; ELSE SET SECOND DRIVE INSTALLED

AH,OFFH SET TEST t.!ASK FOR DRIVE PRESENT

I GET THE CMOS DIAGNOSTIC STATUS

MOV

CALL

AND e"p

JE

AL,Ct.!OS DISKETTE+NMI

Ct.!OS READ

AL,OQFH

AL,AH

FI5D

BATTERY!CHECKSUt.! OK

BYPASS 0 I SK SETUP I F NOT

ADDRESS 0 I SKETTE TYPE BYTE

GET 0 I SKETTE TYPES

LOOK AT SECOND DR I VE TYPE DEF I NED

ARE 80TH INDICATORS ZERO

SKIP IF NO SECOND DRIVE

AND

"NZ

AL,AH

FISD

CALL

INITIALIZE HARD FILE

ARE BOTH INDICATORS NON-ZERO

SKIP IF DRIVE FOUND AND DEFINED

; SET 8AD_CONFIG IN CMOS_DIAG

"OV

OUT

MOV

CALL

CMP

"Z

CALL

AL,3EH

MFG_PORT. AL

AL,CMOS DISK+NMI

CMOS READ

AL,OH

ROM_SCAN 1

DISK_SETUP

<><><><><><><><><><> <> <>

<><> CHECKPOINT 3E <><>

INSURE CMOS DEFINES TYPE OF FIXED DISK

INSURE TYPE IS DEFINED

8YPASS DISK SETUP IF NOT

INITIALIZE HARD FILEISI

; TEST.22

; CHECK FOR OPTIONAL ROt.! FROt.! C800->EOOO IN 2K BLOCKS :

IA VALID MODULE HAS '55AA' IN THE FIRST 2 LOCATIONS:

LENGTH INDICATOR (LENGTH/512) IN THE 3RD LOCATION :

AND TEST/INIT. CODE STARTING IN THE 4TH LOCATION)

~~~-;;~~~~--

~ ST I

MOV

OUT

CALL

MOV

CALL

ROM_SCAN:

AL.38H t.!FG PORT ,AL

DDS-

AL,IO

PRT_HEX

ALLOW INTERRUPTS

<> <> <> <> <> <><><> <> <> <><>

<><> CHECKPOINT 3B <><>

SET REAL MODE DATA SEGMENT

LINE FEED ON DISPLAY

SET Dt.!A MASK AND REQUEST REGISTERS

SUB

OUT

""P

OUT

"OV

ROM SCAN2a

MOV

AL,AL

Dt.!AI8+2,AL '_2

DMAI8+4,AL

DX.OC800H

DS,DX

SEND ZERO TO t.!ASK REG I STER

SEND ZERO TO REQUEST REG I STER

SET BEGINNING ADDRESS

5-70

TEST2

IBM Perllonal Computer MACRO Allllembler Verllion 2.00

TEST2 - - - - 06/10/85 POST TESTS AND INITIALIZATION ROUTINES

1-14

06-10-85

1435 0173 51

1436 0114 BF ,1",1,,55

1431 0111 2B DB

1438 0119 88 07

1439 011B 38 Cl

1440 0110 5F

1441 017E 15 05

1442 0180 E8 0000 E

1443 0183 E8 04

1444 0785

1445 0165 81 C2 0080

1446 0769

1447 0789 81 FA EOOO

1448 0780 7C E2

1449

1450

1451

1452 018F E8 0000 E

1453 0192 E4 64

1454 0194 24 10

1455 0196 14 02

1456 0198 EB OB

1451 019A

1458 019A 80 OE 0016 R 80

1459

1460

1461 019F BE 0000 E

1462 01,1,,2 E6 0000 E

1463 07,1,,5

1464

1465

1466

1461

1468 07,1,,5 BF 0905 R

1469 07,1,,8 BE 0000

1470 07AB

1471 07A8 2E: 8B 15

1412 alAE BO ,1",1"

1413 01BO EE

1414 01BI E8 00

1415 0183 IE

1416 0184 EC

1411 0185 IF

1418 0186 3C ,1",1"

1419 0188 15 06

1480 01BA 89 94 0008 R

1481 07BE 46

1482 07BF 46

1463 07CO

1484 07CO 41

1485 OlCI 47

1486 01C2 81 FF 0909 R

1487 01C6 75 E3

1488

1489

1490

1491 01C8 88 0000

1492 01C8 9A 03FA

1493 01CE EC

1494 01CF A8 F8

1495 0101 15 08

1496 0103 Cl 81 0000 R OlF8

1491 0109 43

1498 01DA 43

1499 0lOB BA 02FA

1500 07DE EC

150 1 07DF ,1,,8 F8

1502 07EI 15 08

150l 01E3 Cl 81 0000 R 02F8

1504 01E9 43

1505 OlEA 43

1506

1501

1508

1509 01E8

1510 01E8 89 C6

1511 OlEO 9103

1512 07EF 02 C8

1513 07FI 0,1" C3

1514 07F) ,1,,2 0011 R

1515

1516

1511

1518 01F6 E8 0000 E

1519

1520

1521

1522 01F9 BO 40

1523 07FB E6 80

1524

1525 OlFD BF 0061 R

1526 0800 33 co

1521 0802 89 05

1528 0804 08 E3

1529 0806 E8 00

1530 0808 09 3D

1531 080,1" 60

1532 0808 61

1533 080e 81 25 IF3F

15340810 81 3D 033F

1535 0814 15 13

1536

1537 0816 9B DO 3D

1538 0819 60

1539 081,1" 61

1540 0819 F7 05 989F

1541 081F 15 08

1542

1543 0821 E4 AI

1544 0823 24 OF

1545 0825 B4 02

15460821 E6 AI

1541 0829

15480829 ,1,,0 0010 R

PUSH

MDV

SUB

MDV

GMP

POP

JNZ

CALL

JMP

NEXT ROM;

AOO

ARE WE DONEI

CMP

JL

01

DI,OAA55H

BX,BX

AX, [9XI

AX,DI

01

NEXT ROM

ROM CHECK

SHORT ARE_WE_DONE

DX,0080H

OX ,OEOOOH

ROM_SCAN2

1-----

TEST FOR KEYBOARD LOCKED

KEY1 :

KEYIOI

1-----

F161

FIT:

; - - - - -

FI81

F19:

: SAVE WORK REGISTER

: GET TEST PATTERN

: SET BX_OOOO

; GET I ST WORD FROt.4 MODULE

; =

TO 10 WORD?

I RECOVER WORK REG I STER

; PROCEED TO NEXT ROt.4 I F NOT

; GO CHECK OUT MODULE

, CHECK FOR END OF ROM SPACE

PO I NT TO NEXT 2K ADDRESS

AT EOOOO YET?

GO CHECK ANOTHER ADD. IF NOT

MDV

MDV

OUT

JMP

PUSH

IN

POP

CMP

JNE

MOV

INC

INC

CALL

IN

AND

JZ

JMP

DDS

AL,STATUS PORT

AL,KYBD IJilH

KEYI -

SHORT KEY 1 0

SET 0,1" T A SEGMENT

I S KEYBOARD UNLOCKED?

NO SET ERROR FLAGS AND PRINT MESSAGE

GO IF OFF

OR OMFG ERR FLAG+I,KEY FAILI

- ;

ASSUME DS;DATA

MDV 51,OFFSET E302

<><><><><><><><><><><><><><>

<><> KEYBOARD I SLaCKED

PRINT LOCKED MESSAGE (3021

<><>

CALL E_MSG

; ===:: ::======::::=======

SETUP OPR I NTER BASE

1

:::= =::=: ===:===i'=====

MOV

MDV

01 ,OFFSET F4

S 1,0

1 OFFSET OF PRINTER ADDRESS TABLE

GET PR INTER BASE ADDRESS

WR I TE DATA TO PORT A

DX,CS:[DII

AL,OAAH

DX,AL

0·2

OS

AL,DX

OS

AL.OAAH

FJ7

~~R

INTER_BASE[SI

J ,ox

51

1/0 DELAY

BUS SETTL I NG

READ PORT A

DATA PATTERN SAME

NO CHECK NEXT PR I NTER CARD

YES STORE PR I NTER BASE ADDRESS

I NCREt.4ENT TO NEXT WORD

INC

INC

CMP

01

01

01 ,OFFSET F4E

JNE Fl6

;==========::==

SETUP RS232

~o~::====;;:~== t.40V

IN

TEST

,jNZ

~~~

DX,3FAH

AL,DX

AL. OF8H

FI6

:~S232_BASE[BXJ

,3F8H

PO I NT TO NEXT BASE ADDRESS

ALL POSS IBLE AODRESSES CHECKED?

PRT_BASE

POINTER TO RS232 TABLE

CHECK IF RS232 CARD I ATTACHED?

READ INTERRUPT 10 REGI STER

SETUP RS232 CARD "1 ADDRESS

INC

MOV

IN

TEST

,jNZ

MOV

INC

BX

DX,2FAH

AL,DX

AL, OF8H

F19

PRS232 BASE(BX] ,2F8H

BX

CHECK IF RS232 CARD 2 ATTACHED

READ INTERRUPT IO REG I STER

BASE END

SETUP RS232 CARD '2

INC BX

,_ •• =:::::: ==:::::: =:: = =:::: = = ==:::: =========:: =:: = =:::: ==:::: =:::::: == =-

==:::: ==== = ===

SET UP PEQUIP_FLAG TO INDICATE NUMBER OF PRINTERS AND RS232 CARDS

; === =============== "'=='" "': ===:== ===::==::::==::======== ==== ==::==== ==: =

; BASE END, t.40V

MOV

ROR

OR

MOV

AX,SI

CL,3

AL,CL

; SI HAS 2- NUMBER OF RS232

; SHIFT COUNT

; ROTATE RIGHT 3 POSITIONS

AL,BL ; OR IN THE PRINTER COUNT

BYTE PTR <PEQU I P _FLAG-<- I ,AL ; STORE AS SECOND BYTE

INSURE CMOS CLOCK HAS VALID HOURS.MINUTES.SECONDS

CALL SET_TOO 1 INSURE CMOS CLOCK IS VALID

1-----

ENABLE HARDWARE INTERRUPT IF MATH PROCESSOR (80287)

MDV

OUT

AL ,40H

MFG_PORT, AL

MOV

XDR

~~:~~FSET

PIO_ROM_INIT

MDV WORD PTR [Dll,AX

FNINIT

JMP 0.2

FNSTCW WORD PTR [OJ

PUSHA

1

POP A

AND

CMP

JNE

WORD PTR [DII,OIF3FH

WORD PTR

10

I I, 0033FH

NO_281

FSTSW

PUSHA

POPA

TEST

JNZ

IN

AND

MOV

OUT

Mav

WORO PTR [0 I)

WORD PTR [0 I ] , OB88FH

NO_281

AL,INTB01

AL,OOFH

AH,002H

INTB01,AL

AL,BYTE PTR qlEQU IP_FLAG

<> <> <><><><><><><><><><>

<><> CHECKPOINT 40 <><>

ADDRESS WORK STORAGE LOCATION

CLEAR WORK REGISTER (AHI.O (NO 281)

CLEAR THE WORK LOCA T I ON

INITIALIZE THE 80287 WITH NO WAIT

DELAY

WRITE THE CURRENT 80281 CONTROL WORD

TIt.4E FOR 80261 TO RESPOND

CLEAR UNUSED 60281 BITS

IS THE 80281 INSTALLED?

GO IF MATH PROCESSOR (S NOT INSTALLED

STORE THE STATUS WORD (WITH WAITl

TIME FOR 80281 TO RESPOND

ALL BITS SHOULD 9E OFF (OR ERROR)

GO IF NOT INSTALLED

GET THE SLAVE I NTERRUPT MASK

ENABLE 80287 INTERRUPTS

SET WORK REGISTER FOR 80287 FOUND

GET LOW EQUIPMENT FLAG

TEST2 5-71

IBM Pereona I Computer MACRO Assemb I . r Vera i on 2.00

TEST2 - - - 06/10/85 POST TESTS AND INITIALIZATION ROUTINES

1-15

06-10-85

1549 082C 24 02

1550 082E 3A C4

1551 0830 74 08

1552

1553 0832 80 36 00 lOR 02

1554 0837 E8 0000 E

1555 083A

1556

1557

1558 083A

1559

C7 06 0017 R 0000

1560

1561

1562 0840 E4 21

1563 0842 24 FC

1564 0844 EB 00

1565 0646 E6 21

15660848 C6 06 0015 R 00

1561

1568

1569

1510 0840 C6 06 0096 R AO

1571 0852 BO F2

1512 0854 E8 0000 E

1513 0857 B9 067A

1514 085A E8 0000 E

1515 085080 26 0096 R IF

1516

1517

1518

1579 0862 80 3E 0075 R 02

1580 0867 14 13

1581

1582 0869 84 10

158308688281

15M 0860 FE 06 0015 R

15850871 CO 13

1586 0873 FE OE 0075 R

1581 0877 72 03

1588

1589 0879 E8 0000 E

1590 D87C

1591

1592

1593

1594

1595 081C OB ED

1596 087E 74 55

1597

1598 0880 80 3E 0072 R 64

1599 0885 BA 0002

1600 0888 15 OE

160 I

1602

1603

1604 088A C6 06 0015 R AA

1605 D88F E4 64

1606 0891 24 10

1601 0893 75 40

1608

1609 0895 SA 0005

1610 0898

1611 0898 E8 0000 E

1612 089880 OE

1613 0890 E8 0000 E

\614 08AO A8 20

1615 08A2 14 OC

1616

1617 08A4 Fl C5 8000

1618 08A8 75 06

1619

1620 08AA BE 0000 E

1621 08AD E8 0000 E

1622

1623

1624

1625 0880

1626 08BO E4

1621 08B2 24 10

1628 0884 75 06

1629

1630 08B6 BE 0000 E

1631 0889 E8 0000 E

1632

1633

1634

1635 08BC

1636 08BC BE 0000 E

1637 08BF E8 0000 E

1638

1639

1640

1641 08C2 B4 01

1642 08C4 28 02

1643 D8C6 CD 17

1644 08C8

1645 08C8 80 3F

1646 08CA E6 80

1647 OBCC 84 00

1648 08CE CD 16

1649 0800 80 Fe 3B

1650 0803 75 F3

1651 0805

16520805 F6 06 0012 R 20

1653 08DA 15 03

1654 080C E9 0000 E

1655 080F 80 3E 0072 R 64

1656 08E4 74 06

1657

1658 08E6 BA 0001

1659 08E9 E8 0000 E

1660

1661

1662

AND

CMP

JE

AL,002H

AL,AH

OK_287

XOR

CALL

8YTE PTR $EQUIP FLAG,2H

CONFIG_BAD -

SET KEYBOARD STATE FLAGS

STR I P OFC- OTHER 8 [TS

DOES CMOS MATCH HAROWARE

7

SK I P IF EQU I PMENT FLAG CORRECT

ELSE SET 80287 81T TO CORRECT VALUE

AND SET THE CONFIGURATION ERROR FLAG

MOV RESET ALL KEYBOARD STATUS FLAGS

ENABLE KEYBOARD I T I MER INTERRUPTS

IN

AND

JMP

OUT

MDV

AL,INTAOI

AL.OFCH

I·'

INTAO \ ,AL

<lIMFG_ERR_FLAG,O

ENABLE T I MER AND KEY80ARD INTERRUPTS

I/O DELAY

CLEAR MFG ERROR FLAG

READ KEYBOARD 10 TO INITIALIZE KEYBOARD TYPE AND NUM LOCK STATE

MOV

MOV

CALL

MOV

CALL

AND

<lIKB FLAG 3. RD ID+SET NUM LK

AL, KB READ 10-

; SET READ 10 COMMAND FOR KSX

I

GET TH I S SYSTEMS KEYBOARD I D REQUEST

SND DATA ex, T 658

WAITF

; USE KEYBOARD TRANSMISSION ROUTINE

; SET DELA Y COUNT TO 25 MILL! SECONDS

; WAIT FOR READ 10 RESPONSE 120 MSI

OK8_FLAG_3,NOT RD_ID+LC_AB+SET_NUM_LK : RESET READ 10 COMMAND

CHECK FOR SECOND F I XED 0 I SK PRESENT BUT NOT DEF I NED eMP

JE

<lIHF NUM,2

FI5G

CHECK FOR TWO DR I VES DEF I NED BY CMOS

SKIP TEST IF TWO DRIVES DEFINED

MDV

MOV

INC

INT

DEC

JC

AH,OIOH

DL,061H

4tHF NUM

13H­ i:lHF NUM

FISC

GET TEST DR I VE READY COMMAND

POINT TO SECOND FIXED DISK

TELL BIOS IT HAS TWO DRIVES

CHECK READY THROUGH BIOS

RESTORE CORRECT COUNT (RETAIN CYI

SK I P I F SECOND DR I VE NOT READY

SECOND DR I VE NOT DEF I NED

SET CONFIGURATION BAD CALL

FISC:

;

;

- - - - --- - - -

-

-- - -- -------------- - - - -­

TEST FOR ANY ERRORS (BP NOT ZERO)

DR

JE

CMP

MOV

.JNZ

CHECK (BP)= NON-ZERO (ERROR HAPPENED)

SK I P PAUSE I F NO ERROR

BYTE PTR <lIRESET FLAG,64H; MFG RUN IN MODE?

DX,2 ; 2 SHORT BEEP COUNT FOR ERROR(S)

ERR_WAIT ; GO IF NOT

MFG RUN I N MODE -> SET ERROR FLAG

MDV

IN

AND

JNZ

<lIMFG ERR FLAG, OAAH

AL ,STATUS PORT

AL,KYBD INH

F15A_0 -

MDV

ERR WAIT:

CALL

MDV

CALL

TEST

JZ

OX,S

ERR 8EEP

AL,CMOS 0 I AG

CMOS READ

AL,BAD CONFIG

ERR_WKEY

I NO I CATE ERROR

CHECK KEY LOCK STATUS

1 S THE KEYBOARD LOCKED

CONT I NUE MFG MODE I F NOT LOCKED

ELSE

5 SHORT BEEPS FOR MFG SETUP ERROR

BEEPS FOR ERROR ( S I

ADDRESS CMOS

GET THE DIAGNOSTIC STATUS BYTE

CHECK FOR BAD HARDWARE CONFIGURATION

SKIP IF NOT SET

TEST

JNZ

MOV

CALL

BP,08000H

ERR_WKEY

51 ,OFFSET EI62

P _MSG

ELSE CHECK FOR E I 61/E 162 pOSTED

SKIP IF 01 SPLAYED BEFORE NOW

ELSE DISPLAY ~OPTIONS NOT SET"

WITH NON HALTING ROUTINE

CHECK FOR "UNLOCK SYSTEM UNIT KEYLOCK" MESSAGE REQUIRED

ERR WKEY:

IN

AND

IN'

AL,STATUS PORT

AL,KYBD INH

ERR_WAIT2

CHECK IF RESUME MESSAGE NEEDED

1 S THE KEYBOARD LOCKED

SK IP LOCK MESSAGE IF NOT

MDV

CALL

S I ,OFFSET F3Dl

P _Io4SG

ERROR MESSAGE FOR KEYBOARD LOCKED

DISPLAY '(RESUME = "Fl" KEY)' FOR ERRORS

ERR WAIT2;

MOV

CALL

SI,OFFSET F3D

P_MSG

; RESUME ERROR MESSAGE

INITIALIZE PRINTER (ALTERNATE DISPLAY DEVICE)

MOV

SUB

INT

ERR WAIT1:

MOV

OUT

MOV

INT eMp

FI5A 0:

JNE

TEST

FI5A:

JNZ

JMP

CMP

JZ

AH, I

DX,OX

I7H

AL ,3FH

MFG PORT ,AL

AH,OO

16H

AH,38H

ERR_WA I T I

FIRST PRINTER

WAIT

<> <><><><><><><><> <><><>

<> <> CHECK PO I NT 3F <> <>

'FI' KEY

"MFG TST, MFG LOOP

FI5A-

START I

~i6~

PTR

MFG BURN I N MODE

GO IF NOT

~RESET fLAG, 64H;

; GO LOOP POST

~~~A~~NB~~;

I F YES

I 1 SHORT BEEP I NO ERRORS)

5-72

TEST2

IBM Personal Computer MACRO Asse",bler Version 2.00

TEST2 - - - 06/10/85 POST TESTS ANO INITIALIZATION ROUTINES

1-16

06-10-85

1663

1604 OBEC E8 0000 E

1065

1666

1601

1008 08EF 2A E4

1669 OaF I AO 0049 R

1610 08F4 CO 10

1011

1012

1613

1614 OaF6 B9 0lF4

1615 OaF9 BF OOAO

1616 08FC 2B CO

1611 OaFE BE co

16180900 26: 89 05

1619 0903 83 C1 02

1680 0906 E2 F8

1681

1662

1683

1684 0908 B8

1685 090B 8E DO

1686 0900 BC 0400 R

1681

1688

1689

1690 0910 E4 21

1691 0912 24 Fe

16920914 E8 00

1693 0916 E6 21

1694

1695

1696

1691 0918 80 3E 0012 R 64

1698 0910 15 02

1699 091 F EB 5C

1100

1101

11020921

11030921 E4 AI

1104 0923 24 FO

1105 0925 EB 00

1106 0921 E6 AI

1101

1108

1109

1110

1111

1112

1713

1714 r 115 0929 eo 41

1116 092B E6 80

1117

11180920 BO 80

1119 092F E6 10

1720

1121

1122

1123 0931 Co 00 0012 R 00

1124 093b B8 EOOO

1125 0939 8E CO

112b 093B 2B FF

1127 0930 26: 8B 05

1128 0940 53

11290941 5B

1130 0942 3D AA55

1131 09459C

1132 0946 26: 89 05

1133 0949 E4 61

1134 094B OC OC

11350940 E6 bl

1136 094F 24 F3

1131 0951 E6 bl

1138 0953 90

'139 0954 15 21

1140

1141

1142

11430956 IE

1144 0957 06

1145 0958 IF l14b 0959 28 08

1141 0958 E8 0000 E

1148 095E IF

1149 095F 75 IC

1150

1151

1152

11530961 BO 00

1154 0963 E6 10

1155

1156 09b5 E4 61

1151 0967 24 F3

11580969 E6 61

1759

1160 0968 C1 06 0007 R 0003

1161 091. 8C 06 0069 R

1162

1163 0915 BO 42

1164 0911 E6 80

1165

11bb

1161

17680919 FF IE 0061 R

1169

1110

1111

1112

1113 0910 BO 00

1114 097F E6 70

11150981 E461

1716 0983 24 F3

FI5BI CALL SET_TOO

CLEAR 0 I SPLA Y SCREEN

SUB

MOV

INT

AH,AH

AL,ttCRT MODE

10H -

1-----

CLEAR DESCR I PTOR TABLES

F20 : MOV

MOV

SUB

MOV

MOV

AOO

LOOP

CX,0500

OI.SYS lOT LaC

AX.AX ­

ES,AX

ESI [01] ,AX

01,2

F20_A

SET POST SYSTEM STACK

MOV

MOV

MOV

AX,ABSO

SS,AX

SP,OFFSET .TOS

CLEAR FLAGS

CLEAR SCREEN

CLEAR 1 K

POINT ES TO START OF DESCRIPTORS

CLEAR

POINT TO NEXT LOCAT[ON

CONT I NUE TILL DONE

GET THE POSl STACK SEGMENT

1-----

END 287:

UNMASK SLAVE HARDWARE INTERRUPT 9 ILEVEL 71)

IN

AND

AL, I NTBO 1

AL,OFDH

1 GET THE CURRENT MASK

.JMP

OUT

1+2

I NTBO I ,AL

: I/O DELAY

; SET NEW MASK i -

~~~~

-

;~~

-

~~ ~ ~~~

-

~~~~

-

~~

-

~~~~~~~

-

~~~~~ ~---

-----------------------­

1

;

I

FIRST WORD

LAST BYTE

ENTRY PO I NT

=

AA55H

=

CHECKSUM

=

FIRST BYTE + 3

; IF TEST IS SUCCESSFUL A CALL FAR TO THE ENTRY POINT IS EXECUTED

MOV

OUT

MOV

OUT

AL,41H

MFG_PORT, AL

AL ,CMOS_REG_D+NMI

CMOS _PORT, AL

<> <> <> <> <> <> <><><><><><>

<><> CHECKPOINT 41 <><>

INSURE NMI OFF AND CMOS AT DEFAULT

ENDIF

ENSURE THAT MASTER LEVEL 2 ENABLED

IN

ANa

JMP

OUT

AL, INTAO I

AL.OFBH

'+2

INTA01,AL

GET THE CURRENT MASK

1/0 DELAY lEST FOR MFG RUN- I N TEST

CMP

.JNZ

.JMP

BYTE PTR etRESET FLAG, 64H l i S THE THE MFG RUN-I N TEST?

ENO 287

SHORT SHUT4

1 GO IF NOT

; BOOT LOAD IF YES

MOV

MOV

MOV

SUB

MOV

PUSH

BYTE PTR etRESET_FLAG, 0

AX.OEOOOH

ES.AX

01,01

AX.ES: [01]

BX

BX

AX,OAA55H

POP

CMP.

PUSHF

MOV

IN

OR

OUT

AND

OUT

POPF

ES: lDI} ,AX

AL,PORT_B

AL,RAM PAR OFF

PORT_B-;-AL ­

AL,RAM PAR ON

PORT_B"';"AL ­

JNZ SHUT4

, -----

CHECKSUM SYSTEM CODE

PUSH

PUSH

POP

SUB

CALL

POP

JNZ

OS

ES

OS

BX,BX

ROM_CHECKSUM

OS

SHUT4

CLEAR FLAG

SEGMENT OF SYSTEM CODE

CHECK FOR AA55

BUS SETTLE

SAVE FLAGS

CLEAR POSS IBLE PAR I TY CHECK

TOGGLE I/O-PARITY CHECK ENABLES

RESTORE FLAGS

CONTINUE

I SET SEGtE:NT TO TEST

, STARTING OFFSET

RESTORE DATA SEGMENT

GO I F CHECKSUM NOT OK

ENABLE NMI AND I/O-MEMORY PARITY CHECKS

MOV

OUT

IN

AND

OUT

"OV

MOV

AL, CMOS REG a

CMOS _PORT, A[

AL.PORT B

AL,RAM PAR ON

PORT_B-;-AL ­

:: g::g=:~~~~E~003H

MOV

OUT

AL.42H

MFG_PORT ,AL

EXIT TO SYSTEM CODE

ENABLE NM I AND SET DEFAULT ADDRESS

ENABLE PAR I TY

ENABLE MEMORY PAR I TY CHECK / 1/0 CHECK

SET THE OFFSET

SET THE SEGMENT

<><><><> <> <><> <> <><> <><>

<><> CHECKPO I NT 42 <><>

CALL GO TO SYSTEM CODE

VIA CALL THROUGH DATA AREA LOCATION l - - - - ENABLE NM I INTERRUPTS + ENTRY FROM SHUTDOWN WITH BOOT REQUEST

ENABLE NMI AND SET DEFAULT ADDRESS SHUT4: MOV

OUT

IN

AND

AL,CMOS REG 0

CMOS PORT, A[

AL ,PORT B

AL,RAM_PAR_ON

ENABLE PAR I TV

ENABLE MEMORY PARITY CHECK I 1/0 CHECK

TEST2

5-73

IBM Personal Computer MACRO Assembler Version 2.00

TEST2 - - - 06/10/85 POST TESTS AND INITIALIZATION ROUTINES

\-\1

06-10-85

1111 0985 E6 61

1178 •

1179 0981 80 43

1180 0989 E6 80

1181 0988 F8

1182

1183 098C CD 19

1184

1185 098E F4

1186

1181

1188 098F

1189 098F 89 OOOF

1190 0992

1191 0992 80 20

1192 0994 E8 0000 E

1193 0997 E2 F9

1794 0999 80 20

1195 099B E8 0000 E

1196 099E C3

1797 099F

1798

1799

1800 099F

1801 099F 50

1802 091.0 BB OOOA

1803

1804

1805

1806 09A3 B9 0005

1801 09A6 2B FF

1808 09A8

1809 09A8 33 02

1810 09AA F1 F3

1811 09AC 80 CA 30

1812 09AF 52

1813 09BO E2 F&

1814

1815

1816

1817 09B2 89 0005

1818 0985

1819 09B5 58

1820 09B6 E8 0000 E

1821 09B9 41

1822 09BA E2 F9

1823 09BC B9 0001

1824 09BF BE 09CE R

1825 09C2

182b 09C2 2E: 6A 04

1827 09C5 4&

1828 09C6 E8 0000 E

1829 09C9 41

1830 09CA E2 F&

1831 09CC 58

1832 09CO C3

1833

1834 09CE 20 4B 42 20 4F 4B

1835 0904 20

1836

=

0905

1837

1838

1839

1840

1841

1842

1843

1844 0905 03BC

1845 09D1 0378

184& 09D9

1847 090B

027B

1846

1849 0908

1850 090B

1851

OUT

MOV

OUT

INT

HLT

PAOING PROC

MOV

PAD! :

NOV

CALL

LOOP

NOV

CALL

RET

PAD I NG ENDP

PORT_B, AL

AL,43H

MFGJ'ORT, AL

19H

NEAR

CX,I5

AL,

PRT HEX

AL,

PRT _HEX

<><> <> <><><> <><><><><><>

<><> CHECKPOINT 43 <><>

ENA8LE I NTERRUPTS IF 0 I SA8LED

GO TO BOOT LOADER

1 NSERT PADD 1 NG

GET BLANK CHARACTER COUNT

GET FILL SPACE

WR [TE A SPACE

LOOP TILL 1 NSERT DONE

; GET DASH CHARACTER

: WRITE TO DISPLAY

PRT OK PROC

PUSH

NOV

NEAR

AX ax,

10

CONVERT AND SAVE

PRINT ~OOOOO KB OK"

SAVE WORK REGISTER

SET OEC I MAL CONVERT

NOV sua

PRT DIV;

XOR

OIV

OR

PUSH

LOOP eX,5

01,01

DX,OX ax

DL,30H

DX

PRT_D1V

OF 5 NIBBLES XX,XXX KB

D [SPLA Y REGEN BUFFER pas

I T I ON

DIVIDE BY 10

~AKE

SAVE

INTO ASCII

DISPLAY LAST OK MEMORY

NOV

PRT DEC:

POP

CALL

INC

LOOP

NOV

NOV

PRT LOOP;

MOV

INC

CALL

INC

LOOP

POP

RET

CX,5

AX

PROT PRT HEX

01 ; POINT TO DISPLAY REGEN BUFFER

PRT DEC i~ :g~~~~i ~~~_PAD-OFFSET; F~g

[NT +0

L~~~N~E~S~~EO~~~~TH

AL,CS: [SI]

51

PROT PRT HEX

OJ -

PRT LOOP

AX j

RECOVER A NUMBER

I NCREMENT BUFF PTR

RECOVER WORK REGISTERS

F3B DB

F3B OK DB

F3B-PAD EQU

.LIST

PRT _OK ENOP

, K8 OK' OK MESSAGE

PAD A SPACE

MESSAGE

PR INTER TABLE

1--------- -------­ - -----­

:

F4

F4E

DW

DW

DW

LABEL

03BCH

0318H

0276H

WORD

POST2

CODE

ENDP

ENDS

END

ADDRESS OF MONOCHROME PARALLEL ADAPTER

BASE ADDRESS STANDARD PARALLEL ADAPTER

ADDRESS OF ALTERNATE PARALLEL ADAPTER

5-74

TEST2

IBM Personal Computer MACRO Assembler Version 2.00

TEST3 - - - - 06/10{85 POST EXCEPTION INTERRUPT TESTS

I-I

06-10-85

10

11

12

13

I.

17

"

20

21

22

23

53

5.

55

5.

51

58

.3

.5

..

59 .,

.2

"

.9

10

50

5 I

52

'2 .3 ..

44

.5 .,

48

.9

"

38

39 .,

2'

25

2.

21

28

29

30

31

32

33

3.

35

0000

0000

0000

0003

0005

E8

BO

E6

0000 E

Fa

80

PACE j 18,121

TITLE TEST3 - - - 06/10/85 POST EXCEPTION INTERRUPT TESTS

.286C

.L 1ST

TEST .20

ADD I T 10NAL PROTECTED I VIRTUAL MODE) TES T

DESCRIPTION

THE PROCESSOR I S PUT I N PROTECTED MODE AND

THE FOLLOWING FUNCTIONS ARE VERIFIED

1. 'o'ER I FY PROTECTED MODE

THE MACHINE STATUS IS CHECK FOR VIRTUAL MODE

2. PROGRAMMED I NTERRUPT TEST

AN PROGRAMMED INTERRUPT 32 I S ] SSUED AND

AND VERIFIED

3. EXCEPTION INTERRUPT 13 TEST

A OESCR I PTOR SEGMENT LIM I TIS SET TO ZERO

AND A WRITE TO THAT SEGMENT IS ATTEMPTED

AN EXCEPT I ON 13 IS EXPECTED AND 'o'ER I F I ED

4. LDT/SDT LTRISTR TEST

LOAD LOT REG I STER AND 'o'ER I FY CORRECT

LOAD TASK REGISTER AND VERIFY CORRECT

THEY ARE VERIFIED VIA THE STORE INSTRUCTION

5. THE CONTROL FLAGS OF THE 286 FOR DIRECTION

ARE VERIFIED VIA THE STD AND CLD COMMANDS

IN PROTECTEO MODE

BOUND INSTRUCTION TEST IEXCEPTION INT 51

CREATE A SIGNEO ARRAY INDEX WITHIN AND

OUTSIDE THE LIMITS. CHECK THAT NO EXC INT

IF WITHIN LIMIT AND THAT AN EXC )NT

OCCURS IF OUTSIDE THE LIMITS.

5

PUSH ALL POP ALL TEST

SET GENERAL PURPOSE REG I STERS TO 0 I FFERENT

VALUES ISSUE A PUSH ALL. CLEAR THE REGISTERS

ISSUE A POP ALL AND VERIFY CORRECT.

8. CHECK THE VERR I VERW I NSTRUCTI ONS

THE ACCESS BYTE I S SET TO READ ONLY THEN TO

A WR I TE ONLY AND THE VERR I VERW INSTRUCT (ONS

ARE VERIFIED.

9. CAUSE AN INTERRUPT 13 V (A A WR I TE TO A

READ ONL Y SEGMENT

10. \lER I FY THE ARPL I NSTRUCT ION FUNCT IONS

SET THE RPL F I ELO OF' A SELECTOR AND

'o'ER I FY THAT CURRENT SELECTOR RPL (S SET

CORRECTLY.

! I. VERIFY THE LAR INSTRUCTION FUNCTIONS

12. VERIFY THE LSL INSTRUCTION FUNCTIONS

13. LOw MEG CHIP SELEcT TEST

------------

CODE SEGMENT BYTE PUBLIC

PUBL I C POST3

POST3

EXTRN

EXTRN

EXTRN

EXTRN

CMOS WR I TE: NEAR

DDS:NEAR

PROC SHUTOOWNINEAR

SYSINITI :NEAR

ASSUME CS:COOE

PROC

CALL

MO\l

OUT

DDS

AL,OFOH

MFG PORT, AL

SET DATA SEGMENT

<> <><><><><><><><><> <> <>

<><> CHECKPOINT FO <><>

0007

OOOA

B8

E8

078F

0000 E

SET SHUTDOWN RETURN 7

MOV

CALL

AX,1·H+CMOS SHUT OOWN+NMI

CMOS WRITE -

ENABLE PROTECTED MODE

-

I AOORESS FOR SHUTDOWN BYTE

SET ERROR EXIT (DOUBLE EXCEPTION?i

; - - -

95

9.

91

98

99

100

101

102

103

104

105

10.

101

108

109

110

111

112

113

114

83

84

85

8.

81

88

89

90

91

92

93

94

13

14

15

1.

11

18

19

80

81

82

0000

00 I 0

0012

0015

BC

8E

BC

E8

0000

04

8000

0000 E

0018

0018

0010

OOIF

0026

002C

002F

003 I

88

8E

8E

0008

CO

08

26:

26:

BE

C7 06

C6 06

0058

8E

BC

06

FFFD

005A 0000

005C 00

003-4

0031

003A

003C

OF

A9

15

E9

01 EO

0001

03

02CO R

003F

0041

BO

E6

FI

80

00-43

00-45

0041

00-49

00-48

0040

004F

0051

0053

80

E6

CD

2B

E4

22

EO

14

E9

BO

8B

20

C9

88

CO

FA

03

02CD R

0056 BO F2

LOOP! :

MOV

MOV

MOV

CALL

MO\l

MOV

MOV

MDV

MOV

MOV

MO\l

MOV

SMSW

08

TEST

JNZ

JMP

SP,POST SS

SS,SP

SP,POST SP

SYSINITl

1----- SET TEMPORARY STACK

AX ,COT PTR

ES,AX ­

DS,AX

ES:SS TEMP.BASE LO WORD,O

BYTE PTR ES: ISS-TEMP.BASE HI BYTE),O

5 I ,SS TEMP -

SS,S]­

SP,MAX_SEG_LEN-2

VER I FY PROTECTED MODE

AX

OOF'H,OOIH,OEOH

AX, V I

T1 I

RTUAL ENA8LE

ERROR_EX I T

AL,OF!H

MFG PORT,AL

SET STACK FOR SYSINITI

GO ENABLE PROTECTED MODE

ERROR IF NOT

INTERRUPT TEST (PROGRAMMED INTERRUPT 32)

MOV

OUT

INT

AL,OBOH

OMA_PAGE+OAH,AL

32

SUB

IN

AND

CX,CX

AL,OMA_PAGE+OAH

AL,AL

LOOPNZ LOOPI

JZ T1 2

JMP ERROR_EX I T

AL,OF2H

GET THE MACHINE STATUS WORD

ARE WE IN PROTECTED MODE

<><> <> <><><><><><><><><>

<><> CHECKPOINT Fl <><>

SET EXCEPT I ON FLAG

FOR INTERRUPT

INTERRUPT

10

WAIT FOR INTERRUPT

010 1HE INTERRUPT OCCUR?

MISSING INTERRUPT

CAUSE AN EXCEPT I ON INTERRUPT (GENERAL PROTECT I ON INTERRUPT (30)

TEST3

5-75

IBM Per-sonal Comput .... MACRO Assemble... V., ... alon 2.00

T£ST3 - --06/10' 8S POST EXCEPT I ON I NTERRUPT TESTS

, -2

06-10-85

'.5

,.,

,

..

..

,

,

I.,

..

OOAO 8F 0068

,.3 00A4

00A4 00

00A6

".

,

,

..

'7

00A3 OF

00A4

OOM

OOM

88 OF

28 CO

200 00A8 OF

20' 00A9

202 00A9 88 C5

203 OOAB

20' 00A9

205 00A9 00

20. 00A8

207 00A8 25 00F8

20. OOAE 3D 0068

20' 0081 75 08

210

211

2'2

213 0083 FO

2"

0084 9C

215 0085 58

2'.

0086 A9 0200

217 0089 H 03

21. 0088 E9 02CD R

2" 008E

220 008E A9 0400

22' OOC 1 15 03

222 00C3 E9 02CO R

223 aOC6

224 OOC6 FC

225 00C1 9C

22. ooca 56

227 00C9 A9 0400

22. OOCC 14 03

1150058E680

I 16 005A BO 90

1 17 005e E6 8B

II.

"'

121

122 005E C1 06 0048 0000

123

12'

125

126 0064 C6 06 0040 93

127 0069 C6 06 004C 0'

128 006E C7 06 004A 0000

12'

130

131

132 0074 6A 48

133 0016 07

134

135

13.

131 0071 2B FF

138 0079 26: 8B as

139 007C 28 C9

140 007E E4 88 lSI

1S2

141 0080 22 CO

,

.. ,

142 0082 EO FA

143 0084 74 03

144

'.5

,.7

..

...

'50

0086 E9 02CO R

153

154

155

IS.

0089

, 57

0089 80 F3

'5.

00138 E6 50 I.,

0080 8F 0078

..

..

0090 OF

,

,

,.2 0091

'.3

0091 88 07

'.5

0093

0091

I •• 0091 00

'.7

0093

I • •

170

171 0093 2B CO

172

173 0095 OF

"4

0096

175 0096 03 co

17. 0098

177 0096

17. 0096 00

17'

,.,

0098

0095 25 00F8

0098 3D 0078

,.3

009E 15 18

OUT

MOV

OUT

MFG PORT ,AL

AL,9DH

OMA ~PAGE+ OAH. AL

: <><> CHECKPOINT F2 <><>

; SET INTERRUPT ! 3 FLAG

; FOR THE I NTERRUPT HANDLER

;

-----

MODIFY DESCRIPTOR TA8LES

SET TEMPORARY ES DESCRIPTOR TO SEGMENT LIMIT

MOV OS:ES_TEMP.SEG_LIMIT,O; SET SEGMENT TO 0

CPLO. DATA ACCESS RIGHTS

MOV

MOV

MOV

8YTE PTR OS: IES TEMP.OATA ACC RIGHTS) ,CPLO DATA ACCESS

BYTE PTR os:

IES~TEMP.8ASE-H[

BYTE) ,01 r DO ALL-TESTS ON 2ND 64K

WORD PTR OS: I ES:TEMP. BASE=:LO':::WORD ) ,0

SET ES REGISTER

PUSH

POP

8YTE PTR ES TEMP

ES

; LOAD ES

CAUSE AN EXCEPT I ON 13 INTERRUPT

LOOP2:

SUB

MOV

01.01

AX,ES:[OIJ

SUB

'N

ANa

CX,CX

AL,OMA FAGE+OAH

AL, AL -

LOOPNZ LOOP2

JZ T1 3

JMP ERROR_EXIT

I

;

I

.

---- - - - - - -

-- ---------- -

----------------­

VER 1 FY 286 LOT I SOT UR / S TR

I NSTRUCT IONS

OESCR I pT I ON

LOAD LOT REG I STERS WITH A

OESCR I PTOR AND VER I FY CORRECT

TH I S SHOULD CAUSE AND EXCEPT I ON

WA I T FOR ! NTERRUPT

DID THE INTERRUPT OCCUR1

CaNT I NUE I F INTERRUPT

MISS I NG INTERRUPT

WRITE TO 286 LOT REGISTER

MOV

OUT

MOV

LLOT

OB nOOoo LABEL

MOV

.. 11000 1 LABEL

ORG

OB

ORG

AL,OF3H

MFG PORT, AL

01 ,POST LDTR

0' -

OOFH

BYTE

OX,DI

BYTE

OFFSET CS: 110000

OOOH

OFFSET CS:110001

READ AND VER IFY 286 LOT SELECTOR

SUB

SLOT

OB

AX.AX

AX

OOFH

?

?0002 LA8EL BYTE

AOO

110003 LABEL

ORG

OB

ORG

ANa

CMP

JNZ

AX,AX

BYTE

OFFSET CS: 110002

OOOH

OFFSET CS: 1 10003

AX. OF8H

AX, POST_LOTR

ERROR

;

-----

WRITE TO 286 TR

<><> <><> <><><><><><> <><>

<><> CHECKPOINT F3 <><>

REG I STER FROM TH I S AREA

CLEAR AX

GET THE LOT SELECTOR

STRIP TI/RPL

CORRECT SELECTOR?

GO IF NOT

"OV

L TR

DB .

110004 LABEL

MOV

110005 LABEL

ORG

OB

ORG

DI,POST_TR

0'

OOFH

BYTE

BX,DI

BYTE

OFFSET CS: 110004

OOOH

OFFSET CS: 1 10005

VER 1 FY 286 TR REGISTERS

SUB

STR

OB

.. 110006 LA8EL

MOV

110001 LABEL

ORG

OB aRG

ANa

COP

JNZ

AX,AX

AX

OOFH

BYTE

CX,AX

BYTE

OFFSET CS:?70006

OOOH

OFFSET cs: 770001

AX,OF8H

AX,POST TR

ERROR

REGISTER FROM THIS AREA

GET THE TR REGISTER

CORRECT SELECTOR?

TEST 286 CONTROL FLAGS

STO

PUSHF

ERROR:

17 -

POP

TEST

JZ

JMP

TEST

JNZ

J"P

17 5,

CLO

PUSHF

POP

TEST

JZ

AX

AX ,0200H

17

•

I T

AX,0400H

17 5

ERROR_EXIT

AX

AX.0400H

17 -

.

SET 0 I RECT I ON FLAG FOR DECREMENT

GET THE FLAGS

I NTERRUPT FLAG SHOULD BE OFF

CaNT I NUE I F OFF

GO IF NOT

CHECK 0 I RECT I ON FLAG

GO IF NOT SET

CLEAR 0 I RECT ION FLAG

INSURE 0 I RECT I ON FLAG I S RESET

5-76

TEST3

IBM P.rsonal Computer MACRO Ass.mble,. V.,.",on 2.00

TEST3 ---06/10/85 POST EXCEPTION INTERRUPT TESTS

1-3

06-10-85

2.2

2.3

2.'

2 ••

296

2.7

2.6

2 ••

300

301 013A

302 013A BO F5

303 0 I 3C E6 80

304 0 I 3E B8 000 1

305 0141 8808

306 0143 43

307 0144 8B CB

308 014641

309 0141 8B 01

310 014942

311 Q14A8BFA

312 014C 41

313 0140 8B F1

314 014F 46

315 015055

316 0151 8B EE

317 015345

318 0154 60

319 0155 28 CO

320 0157 8B 08

321 0 I 59 8B C8

322 0 I 58 88 DO

323 0 I 50 88 F8

324 015F 8B Fa

325 0161 8B E8

326 0163 61

327 0 I 64 83 FD 07

328 0161 50

329 0168 75 IE

330 016A 3D 0001

331 016075 19

332 016F 83 FB 02

333 0172 15 14

334 0174 83 F9 03

335 0 I 77 75 OF

336 0179 83 FA 04

337 017C 75 OA

338 017E 83 FF 05

339 0161 75 05

340 0 I 83 83 FE 06

341 0 I 86 74 03

342

229 OOCE E9 02CO R

230

231

232

233

234

235

236

231

236

239 0001

240 0001 BO F4

241 0003 E6 80

242 0005 6A 48

243 0007 07

24.

2 ••

2.6

247 OODEI 2B FF

248 OODA 26: C7 05 0000

249 OOOF 26: C7 45 02 7FFF

250 00E5 BO 95

251 00E7 E6 8B

252 OOE9 BEl 1000

253 OOEC 26: 62 05

254 OOEF 2B C9

255 OOF I E2 FE

256 OOF3 E4 8B

257 OOF5 3C 00

258 00F7 75 03

259 00F9 E9 02CO R

260

261

262 OOFC

263 OOFC 2B FF

264 OOFE 26: C7 05 3FFO

265 a

I 03 BB 1000

266 0106 26: 6205

267 0109 2B C9

268 0108

269 Oi08 E4 88

270 0100 3C 00

271 OIOF EO FA

272 0 I I I 74 03

213 0113 E9 02CD R

214

27,

276

277 0116 BO 95

278 0118 E6 88

27.

28001lA2BFF

281 OIIC 26: C1 05 0000

282 0121 26~ C1 45 02 OFFF

283 0127 B8 1000

284 012A 26: 6205

285 0120 28 C9

2E16 012F

287 012F E4 8B

288 0131 3C 00

289 0133 EO FA

290 0135 74 03

291 0137 E9 02CD R

VERIFY 286 BOUND INSTRUCTION

DESCRIPTION

CREATE A SIGNED ARRAY INDEX

WITHIN AND OUTSIDE THE LIMITS

{EXPECT INT 51

"NZ

CMP

"NZ eMP

"NZ

CMP

"NZ

CMP

JNZ eMP

JZ

MOV

OUT

"OV

"OV

INC

MOV

INC

MOV

INC

MOV

INC

MOV

INC

PUSH

MOV

INC

PUSHA

SUB

MOV

MOV

MOV

MOV

MOV

"OV

POPA

CMP

POP oN>

CMP

AL,OF5H

MFG PORT, AL

AX,OI

BX,AX

BX

CX,BX

CX

DX,CX

OX

OJ ,OX

01

S I ,OJ

51

BP

BP,S [

BP

AX,AX

BX,AX

CX,AX

DX,AX

OI,AX

S I,AX

BP,AX

BP,07

BP

ERROR_EX I T I

AX,O!

ERROR EXIT!

BX,02-

ERROR EXIT!

CX,03-

ERROR_EXITI

DX,04

ERROR_EX I T 1

01,05

ERROR EXITI

51,06-

T1_10

: GO IF NOT

; - - - - -

MOV

OUT

PUSH

POP

AL,OF4H

MFG PORT ,AL

BYTE PTR ES TEMP

ES

CHECK BOUND FUNCTIONS CORRECTLY

<> <><><> <><><><><><><><>

<><> CHECKPO I NT F4 <><>

LOAD ES REGISTER

SUB

MOV

MOV

MOV

OUT

MOV

BOUND

SUB

LOOPA: LOOP

IN

CMP

"NZ

"MP

01,01

WORD PTR ES I [0 I ] ,0

WORD PTR ES:[01+2],07FFFH ; SET SECOND TO 07FFFH

AL,095H

DMA PAGE+OAH,AL

SET [NTERRUPT 5 FLAG

AX,ToaOH

AX,DWORD PTR ES; [01]

SET AX WITH I N BOUNDS

USE THE ES SEGMENT PO INTER

CX,CX

LOOPA

AL,OMA PAGE+QAH

AL,O -

T7 7

ERROR_EX I T

; POINT BEGINNING OF THE BLOCK

; SET FIRST WORD TO ZERO

WA I T FOR POSS I BLE [NTERRUPT

GET THE RESULTS

DID AN INTERRUPT OCCUR?

CONT I NUE I F NOT

GO IF YES

CHECK LOW BOUND WORD CAUSES INTERRUPT 5

LOOPB:

; - - - - -

T7_8:

SUB

MOV

MOV

BOUND

SUB

01,01

WORD PTR ES: (0 I] ,03FFOH

AX,loaOH

AX,OWORD PTR ES: [01]

CX,CX

IN eMP

AL,DMA PAGE+OAH

AL,OH -

LOOPNZ LOOPB

OZ

"MP

716

ERROR_EXIT

PO I NT BEG I NN 1NG OF THE BLOCK

SET FIRST WORD TO 03FFOH

SET AX OUT OF 80UNDS

WA I T FOR POSS I BLE 1 NTERRUPT

GET THE RESULTS

DID AN I NTERRUPT OCCUR?

TRY AGAIN

CONT I NUE I F INTERRUPT

GO I F NO INTERRUPT

CHECK HIGH BOUND WORD CAUSES INTERRUPT 5

MOV

OUT

AL,95H

DMA_PAGE+OAH, AL

SET FLAG FOR INTERRUPT

SUB

MOV

MOV

MOV

BOUND

SUB

Ol,Dl I PO I NT BEG I NN I NG OF THE BLOCK

:g:~ ~~~ ~~;lg:!2~.OFFFH: SET FIRST WORD TO 0

SET SECOND TO OFFFH

AX, 1000H

AX,DWORD PTR ES: [01]

I SET AX OUT OF BOUNDS

CX,CX WAIT FOR POSSIBLE INTERRUPT

LOOPC:

IN e"p

AL,DMA PAGE+OAH

AL,OH -

LOOPNZ LOOPC

OZ

"MP

7 1 .

ERROR_EXIT

GET THE RESULTS

0[0 AN I NTERRUPT OCCUR?

TRY AGAIN

GO [F NO INTERRUPT

;

------------ - - ----­

; VERIFY PUSH ALL AND POP ALL INSTRUCTIONS:

; DESCRIPTION

SET REGISTERS TO A KNOWN VALUE AND :

PUSH ALL. RESET THE REGISTERS, POP ALL:

;

AND VERIFY -------------

----------­

<><> <> <> <><> <> <> <> <> <><>

<><> CHECKPO I NT

SET AX= I

SET BX=2

SET CX=3

SET OX=4

SET 0[=5

SET SI =6

SAVE THE (BP) ERROR FLAG REGISTER

SET BP=1

I SSUE THE PUSH ALL COMMAND

CLEAR ALL REG I STERS

GET THE REG I STERS BACK

BP SHOULD BE 7

RESTORE (BPI ERROR FLAG REGISTER

GO IF NOT

AX SHOULD BE I

GO IF NOT

8X SHOULD BE 2

GO [F NOT ex SHOULD BE 3

GO IF NOT

OX SHOULD BE 4

GO IF NOT

OJ SHOULD BE 5

GO IF NOT

5 I SHOULD BE Eo

CONTINUE IF IT IS

TEST3

5-77

3'3

344

345 0188

346 0188 E9 02CD R

341

348

3 ••

3'0

3"

3'2

353

3.4

3"

3'6

351 0188 80 F6

358 018D E6 80

359 018F Cl 06 0046 FFFF

360 0195 C6 06 004C 00

361 019A Cl 06 004A FOOO

362 01 AO B8 0048

363 01 A3 8E CO

364

36'

366

361

368 0 I A5 3E

36'

310 0lA6 OF

371 0lA7

312 0lA7 88 E8

373 0lA9

3"14 0 I Al

315 OIAl 00

316 0lA9

311 0lA9 75 DO

"8

31.

3.0

381 OIAB C6 06 004091

382 OIBO B8 0048

383 0lB3 8E CO

3 ••

385 01 B5 3E

3.6

381 01B6 OF

388 01Bl

389 0187 88 E8

390 0lB9

391 OIBl

392 0181 00

393 0189

394

...

0189 14 CD

396 OIBB B8 0048

391

398 01BE 3E

3••

400 OIBF OF

401 OICO

402 OICO 88 EO

403 0lC2

404 OICO

405 OICO 00

406 0lC2

401 0lC2 15 C4

40.

40'

410

411 0lC480 9D

412 0lC6 E6 88

413 01C8 28 F6

414 OICA 261 C6 04 00

415 OICE 2B C9

416 0100 E4 Be

417 010222 CO

418 0104 EO FA

419 0106 7580

420

'21

422

423 0 I 08 C6 06 0040 93

424

'25

426

421

42.

42.

430

431

432

433

434

435 0100 BO F1

436 0 I OF E6 80

437 OlE I B6 0046

438 01 E4 BB 0060

439 01 E1 00 0003

440

441

442

443

444 OlEA

445 OlEA 8B C3

446 OIEC

447 OlEA

446 OlEA 63

449 OIEC

450 OIEC 75 9A

451 0 I EE 80 E3 03

452 OIF! 80 FB 03

453 0lF4 75 92

454

'55

456

IBM Per.onal Computer MACRO Assembler Version 2.00

TEST3 - - - 06/10/85 POST EXCEPTION INTERRUPT TESTS

1-4

06-10-85

; - - - - ERROR EXIT

ERROR EXITI:

JMP

1--- - - - - - - - ---- - - - - - - - - - - - - - - - - - - - - - - - - - - - - ­

VER [FY ACCESS RIGHTS FUNCT [ON CORRECTL Y

DESCR I PT I ON

SET ACCESS RIGHTS OF DESCRIPTOR TO

READ ONLY. VERIFY THE VERW/VERR INSTR

ACCESS A READ ONLY WITH A WRITE AND

VER I FY AN EXCEPT I ON INTERRUPT 13

T7_10: MOV

OUT

MOV

MOV

NOV

NOV

NOV

AL.OF6H ; <><><><><><><><><><><><> t.lFG PORT,AL I

DS: ES TEMP. SEG LIM IT. MAX SEG LEN

<><> CHECKPOINT F6 <><>

; SET SEGMENT TO OFFFFH

8YTE PTR OS; lES TEMP.8ASE HI-BYTE).O

DS:ES TEMP.BASE-LO WORD.OFOOOH

AX,ES-TEMP

ES. AX-

-

; SET THE ADDRESS

; LOAD ES REGISTER

; TH I S SEGMENT SHOULD 8E WR I TEABLE

; - - - - INSURE ACCESS RIGHTS MAY BE WRITTEN

SEGOV

DB

VERW

DB

7?0009 LABEL

MOV

??OOOA LABEL

DRG

DB

ORG

JNZ os

03EH

AX

OOFH

BYTE

BP,AX

BYTE

OFFSET C5:170009

OOOH

OFFSET CS: ??OOOA

ERROR_EX I T 1

I SET SEGMENT OVERR I DE TO START OF TABLE

CHECI<: THE ACCESS RIGHTS OF ES_TEMP

; ERROR IF SEGMENT CAN NOT WRITE

SET ACCEss RIGHTS TO REAO ONLY

NOV

NOV

NOV

SEGOV

DB

VERW

DB

11000C LABEL

MOV

??OOOO LABEL

ORG

DB

ORG

JZ

MOV

SEGOV

DB

VERR

DB

??OOOF LABEL

MOV

??0010 LABEL

ORG

DB

ORG

JNZ

~~~~t:::~M~S;

IES_TEMP. OAT

~-~g~5

R

~~H~~~ i ~~~R

ES, AX­

OS

03EH

AX

OOFH

BYTE

BP,AX

BYTE

OFFSET CS: noooc

OOOH

OFFSET CS:? ?OOOO

ERROR _EX I T I

AX.ES TEMP

OS ­

03EH

AX

OOFH

BYTE

SP,AX

BYTE

OFFSET CS: ??OOOF

OOOH

OFFSET CS:??OOIO

ERROR_EXIT!

SET SEGMENT OVERRIDE TO START OF TABLE

CHECI<: THE ACCESS RIGHTS OF ES_TEMP

ERROR I F SEGMENT I S WR I TEA8LE

INSURE THAT SEGMENT I S READABLE

GO IF SEGMENT NOT READABLE

LOOPO:

; - - - - -

CAUSE AN EXCEPT [ON '3 INTERRUPT

MOV

OUT

SUB

MOV

AL.090H

OMA PAGE+OAH,AL

SI,SI

BYTE PTR ES:[SI1,OO

CX.CX SUB

IN

AND

AL.DMA PAGE+OAH

AL,AL -

LOOPNZ LOOPD

JNZ ERROR_EXITI

RESTORE THE ACCESS RIGHTS BYTE

SET EXCEPT I ON FLAG

FOR INTERRUPT 13

WRITE A BYTE THAT SHOULD

WAIT FOR INTERRUPT

DID THE INTERRUPT OCCUR?

MISSING INTERRUPT

;

;

---

------ --------- ---- -------------------------­

VERIFY ADJUST RPL FIELD OF SELECTOR

INSTRUCTION (ARPL) FUNCTIONS

DESCR I PT I ON

SET THE RPL FIELD OF A SELECTOR

AND VER I FY THAT THE ZERO FLAG I S SET

CORRECTLY AND THAT THE SELECTOR RPL

;

FIELD I S SET CORRECTLY -----------------

-

-

- - - -

---

- - - - - --

--------------­

MOV

OUT

MOV

NOV

OR

AL.OF1H

MFG PORT, AL

AX,ES TEMP

BX, OS-TEMP

AX,03H

<><><> <><><><><><> <> <> <>

<><> CHECI<:POINT F7 <><>

PUT A SELECTOR I N AX

PUT A SELECTOR IN BX

MAKE ACCESS OF AX < 8X

; - - - - NOTE BX " FIRST OPERAND AX" SECOND OPERAND

ARPL AX,BX noo

I I LA8EL BYTE

MOV

??0012 LABEL

ORG

DB

ORG

JNZ

AX,BX

BYTE

OFFSET CS:??OOII

063H

OFFSET CS:??0012

ERROR EXITI

; - - - - -

AND eMP

JNZ

BL,03H

BL,03H

ERROR_EXITI

; 15SUE THE RPL COMMAND

I GO IF RPL WAS NOT CHANGED

I STRIP UNWANTED BITS

; AS EXPECTED?

1 GO IF NOT

CHECK THAT ACCESS RIGHTS DO NOT CHANGE

5-78 TEST3

[8M Personal Co...put.,. MACRO Assembler

TEST3 - - - -

Version 2.00

06/10/85 POST EXCEPTION INTERRUPT TESTS

1-5

06-10-85

457 OIF& 88 00&0

458 0 I F9 B8 0048

459 01FC 80 CB 03

460

461

462

463

464 OIFF

465 0 IFF 88 C3

466 0201

467 0 IFF

468 01FF 63

469 0201

470 0201 74 85

471 0203 80 E3 03

472 0206 80 F8 03

473 0209 75 2F

414

415

416

411

418

419

480 0208 80 F8

481 0200 E6 80

482

483

484

485 020F C6 06 0040 F3

486 02 I 4 Be 0048

487 0211 2B CO

488

489

490

491

492 0219 OF

493 021A

494 021A 88 C3

495 021C

496 021A

497 021A 02

498 021C

499

500

501

502 021C 75 1C

503

504

505

506 021 E 80 FC F3

501 0221 75 11

508

509

510

51 I 0223 BO F9

512 0225 E6 80

513 0221 C 7 06 0048 AAAA

514

515 0220 C6 06 0040 93

516 0232 B8 0048

511

518 0235 OF

519 0236

520 0236 8B 08

521 0238

522 0236

523 0236 03

524 0238

525 0238 74 03

526

527 023A

528 023A E9 02CD R

529

530 0230 8 I FB AAAA

531 0241 C1 06 0048 5555

532 0247 B8 0048

533

534 024A OF

535 0248

536 0248 88 08

537 0240

538 0248

539 0248 03

540 0240

541

542

0240 75 EB

543 024F 8 I FB 5555

544 0253 15 E5

545

546

541

548

549

550

551

552 0255 BO FA

553 0251 E6 80

554 0259 6A 08

555 0258 1 F

556

551

558

559 025C C7 06 0048 FFFF

560 0262 C6 06 0040 93

561

562

563

564 0267 C6 06 004C 1 a

565 026C C7 06 004A 0000

566 0212 6A 48

567 0274 01

568 0275 28 FF

569 02 T7 26: C1 05 AA55

510

MOV

MOV

OR

BX,DS TEMP

AX ,ES-TEMP

8L,03H

; PUT A SELECTOR IN 8X

; PUT A SELECTOR IN AX

I MAKE ACCESS OF 8X < AX

1-----

NOTE ax =

FIRST OPERANO AX

=

SECOND OPERAND

; I SSUE THE RPL COMMAND ARPL

+ 110013 LABEL

MOV

+ ??0014 LABEL

ORO

DB

ORO

JZ

AND eMP

JNZ

AX,BX

BYTE

AX,BX

BYTE

OFFSET CSI1?OOI3

063H

OFFSET CS:??0014

ERROR EXIT1

BL.03H

BL,03H

ERROR_EXIT2

GO IF RPL WAS NOT CHANGED

STRIP UNWANTED BITS

AS EXPECTEO?

GO IF NOT

; - - - - -

VERIFY LOAD SEGMENT LIMIT (LSL)

AND LOAD ACCESS RIGHTS lLAR) INSTRUCTION

; - - - - CHECK THE LAR INSTRUCTION

MOV

OUT

AL.OF8H

MFG_PORT • AL

SET THE DESCR I PTOR TO LEVEL 3

<> <> <> <> <> <> <><><><><><>

<><> CHECKPOINT F8 <><>

MOV

MOV

SUB

BYTE PTR OS: lES TEMP.DATA ACC RIGHTS) ,CPL3 DATA ACCESS

BX,ES TEMP - ­

AX. AXI CLEAR AX

1-----

GET THE CURRENT OESCR I PTORS ACCESS RIGHTS

; - - - - -

LAR

DB

110015 LABEL

MOV

??0016 LABEL

ORO

DB

ORO

AX,BX

OOFH

BYTE

AX,BX

BYTE

OFFSET CS:? 700 15

002H

OFFSET CS I? ?OO 16

I I

INSURE THE DESCRIPTOR WAS VISIBLE

SSUE THE LAR COMMAND

; - - - - -

JNZ I GO IF LAR WAS NOT CHANGED

THE DESCRIPTORS ACCESS RIGHTS MUST BE 3 eMP

JNZ

AH, CPL3 OAT A ACCESS

ERROR_EXIT2 -

; AS EXPECTED?

; GO I F NOT

CHECK THE LSL (LOAD SEGMENT LIMITS)

MOV

OUT

MOV

MOV

MOV

LSL

DB

??0011 LABEL

MOV

770018 LABEL

ORO

DB

ORO

JZ

AL.OF9H

MFG PORT ,AL ,

OS I ES_TEMP. SEG_L I MIT, OAAAAH

<><><><> <> <> <> <><><><><>

<><> CHECKPO INT F9 <><>

; SET SEGMENT LIMIT TO OAAAAH

BYTE PTR DSI1ES TEMP.DATA ACC RIGHTSI ,CPLO DATA ACCESS

AX,ES TEMP ;-LOAD ES REGISTER-

8X.AX-

OOFH

I GET THE DESCRIPTOR SEGMENT LIMIT

8YTE

BX.AX

BYTE

OFFSET CS 11 ?OO I 7

003H

OFFSET CS: 1100 I 8

R07 GO IF OK

ERROR EXIT2:

..IMP

R07: CMP

MOV

MOV

LSL

DB

+ ??0019 LABEL

MOV

11001A LABEL

ORO

DB

ORO

JNZ

ERROR_EX IT GO I F NOT SUCCESSFUL

BX,OAAAAH ; INSURE CORRECT SEGMENT LIMIT

OS:ES TEMP.SEG L1MIT.05555H ISET THE SEGMENT LIMIT TO 05555H

AX, ES-TEMP

BX,AX-

OOFH

; GET THE DESCRIPTOR SEGMENT LIMIT

BYTE

BX,AX

BYTE

OFFSET CS:? ?OO 19

003H

OFFSET CS:77001A

ERROR_EX I T2 1 GO I F NOT SUCCESSFUL eMP

JNZ

BX,05555H

ERROR_EX I T2

I NSURE CORRECT SEGMENT LIM I T

GO IF NOT

;

I

~ -~~;- ~~~

-

~~~; ;~~~~~ ~~;~ - - - - - - -

---------------------

-

-­

TEST THAT A WRITE TO ADDRESS IBOOOO DOES NOT WRITE

TO BOOOIO, OR IB8000 DOES NOT WRITE TO B800:0

MOV

OUT

PUSH

POP

<> <><><><> <><><> <> <><><>

<><> CHECKPOINT FA <><>

MODIFY THE OESCRIPTOR TABLE

SET TEMPORARY ES DESCRIPTOR 64K SEGMENT L1MIT/CPLO DATA ACCESS

MOV

MOV

OS:ES TEMP.SEG L1MIT,MAX SEG LEN

BYTE PTR os: (ES_TEMP.OATA_ACC_RIGHTSI ,CPLO_OATA_ACCESS

START WITH SEGMENT IBOOOO

MOV

MOV

PUSH

POP

SUB

MOV

BYTE PTR OS: (ES TEMP.BASE HI BYTEI,IBH

DS:ES TEMP.BASE-LD WORO,O

BYTE PTR ES TEMP -

ES

LOAO ES REG I STER

01,01 ; POINT TO FIRST LOCATION

WORD PTR ES: [Oll,OAA55H ; WRITE A TEST PATTERN

TEST3 5-79

IBM Person;;.! Comput.er MACRO A.;.;elllbler Version 2.00

TEST3 - - - 06/10/85 POST EXCEPTION INTERRUPT TESTS

511

572

573 021C C7 06 004A 8000

574 0282 6A 48

515 0284 01

516 0285 26: C1 05 AA55

577

57.

579

580 028A C6 06 004C 1 A

581 028F C7 06 004A 0000

582 0295 6A 48

583 0297 01

584 0296 261 C1 05 AA55

585

58.

587

586 0290 6A 20

589 029F IF

590 02AO 88 05

59'

592

593

594 02A2 6A 28

595 02A4 IF

596 02A5 88 10

597

598

59'

600 02A7 6A 30

601 02A9 IF

602 02AA 88 00

603

60.

60S

606 02AC 50

607 02AO BO 35

608 O~AF E6 80

609 02Bl 58

610 0282 3D AA55

611 02B5 14 16

6 I 2 02B7 81 FB AA55

613 02BB 14 10

614

615

616 02C3 BO 34

617 02C5 E6 80

018

02BO 81 F9 AA55

02CI 140A

6'9

020

621 02C7

622 02C7 B8 068F

623 02CA E8 0000 E

624 02eO

025 02CD E9 0000 E

62.

027 0200

628

029 0200

630

,-.

06-10-85

; - - - - ­ DO FOR SEGMENT lB8000

MOY

PUSH

POP

MOY

DS:ES TEMP.BASE LO WORO,8000H

BYTE PTR ES TEMP -

ES -

LOAD ES REGISTER

WORD PTR ES;{DI],OAA55H ; WRITE A TEST PATTERN

DO FOR SEGMENT I AOOOO

"DV

"DV

PUSH

PDP

"DV

BYTE PTR OS: IES TEMP,BASE HI BYTEI.IAH g~~~Spi~M~S8~~~;LO_WORD, ~-LO~O

ES REGI STER

ES -

WORD PTR ES:[DI] ,OAA55H ; WRITE A TEST PATTERN

B/W Y IDEO CARD

;­

PUSH

PDP

"DV

BYTE PTR C BWCRT PTR

OS - ­

AX,DS:(DI]

COMPATIBLE COLOR

SET OS TO 8/W DISPLAY REGEN BUFFER

GET THE WORD FROM BIW YIDEO

; - - - - ­

PUSH

PDP

"DV

BYTE PTR C CCRT PTR

OS - ­

8X,DS:(DI)

EGA COLOR

PUSH

PDP

"DV

BYTE PTR E CCRT PTR

OS - ­

CX,OS: [01]

TEST FOR ERROR

SET OS TO COMPATIBLE COLOR MEMORY

GET THE WORD FROM COLOR MEMORY

EGA COLOR CRT POINTER LOW 64K

PUSH

MDV

OUT

PDP e"p

JZ eMP

JZ e"p

JZ

MDV

OUT

SHUTDOWN

AX

AL,35H

MFG PORT ,AL

AX -

AX.OAA55H

ERROR EXIT

8X.OAA55H

ERROR EX IT

CX.OAA55H

ERROR EX IT

AL,34H

MFG_PORT ,AL

NORMAL EXIT:

MOY

CALL

ERROR EXITI

..,IMP

AX,6·H+CMOS SHUT_DOWN+NMI

CMOS_WRITE

PROC_SHUTDOWN

SAVE RESULTS

<> <> <> <><><><><><> <> <> <>

<><> CHECKPOINT 35 <><>

RESTORE CHECK PO I NT

<><> CHECKPOINT

ADDRESS FOR SHUTDOWN BYTE

SET GOOD END I NG

POST3

CODE

ENDP

ENDS

END

5-80 TEST3

I

6

9

1

2

3

4

.

5 0000

10

"

I l

14

15 I.

11

I.

11

12

19

,.

13

14

,.

11

60

54

55

56

57

58

59

60

61

62

63

64

65

66

61

68

69

10

51

52

53

50

..

4.

45 .,

21

22

23

24

25

26

21

26

2.

30

31

32

33

3.

35

3.

31

38

39

40

41

42

43

44

.5

62

.3

•• .

•• ,

6 I

0000

0000

0000 9C

0001 00 CO

0003 F9

0004 00

0006 FA

08

0007 E6 70

0009 90

OOOA E4 11

OOOC 50

0000 BO lA

OOOF DO 06

0011 E6 70

0013 58

0014 OE

0015 E6 0019 R

0016 C3

0019

0019

0019 CF

91

• 2

93

94

95

96

97

001 A

OOIA 9C

001B 50

98

99

00 I C DO CO

DOlE F9

100 OOIF DO 06

101 0021 FA

102 0022 E6 10

103 002.... 6A C4

104 0026 E6 71

105 0026 BO I A

106 002A DO 08

101 002C E6 70

106 002E 56

109 002F OE

110 0030 E6 0019 R

I I 1 0033 C3

112

113

IBM Personal Computer MACRO Assembler

TEST .... ---06/10/85

Version 2.00

POST AND BIOS UTILITY ROUTINES

I - I

06-10-65

PAGE 118,121

TITLE TES14 ---06/10/85 POST AND BIOS UTILITY ROUTINES

.286C

.LIST

CODE SEGMENT 8YTE PUBL IC

PU8L [C

PUBL IC

PU8L IC

PUBLIC

PUBLIC

PUBLIC

PUBL IC

PUBLIC

PUBLIC

PUBLIC

PUBLIC

PUBLIC

PUBLIC

PUBLIC

PUBL IC

PUBUC

PUBL IC

PU8L I C

PUBL I C

PUBLIC

PUBL IC

PUBLIC

PUBLIC

PUBL IC

BEEP

BLINK INT

CMOS READ

CMOS-WR ITE

CONFTG BAD

011

DDS

DUMMY RETURN I

ERR BEEP

E MSG

INT 267

KBD-RESET

POST4

PROT PRT HEX

PROC-SHUTDOWN

PRT HEX

PRT-SEG

P MSG

RE DIRECT

ROM CHECK

ROM-CHECKSUM

SET-TOO

WAITF

XPC_BYTE

EXTRN

EXTRN

EXTRN

EXTRN

EI63:NEAR

OBF 42:NEAR

ROM-ERR: NEAR

XMIT_80 .... 2:NEAR

ASSUlIIE

POST4:

; --- CMOS READ

CS: CODE, OS: DATA

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

READ BYTE FROM CMOS SYSTEM CLOCK CONFIGURATION TABLE

INPUT: (AL)

=

CMOS TABLE ADDRESS TO BE READ

BIT 7

=

0 FOR NM I ENABLED AND I FOR NM I 0 I SABLEO ON EX IT

BITS 6-0

=

ADDRESS OF TABLE LOCATION TO READ

OUTPUT: (ALI

;

--------------

VALUE AT LOCATION (ALI MOVED INTO {AU. IF BIT 7 OF (ALI WAS

ON THEN NM I LEFT 0 I SABLED. OUR I NG THE CMOS READ BOTH NM I AND

NORMAL INTERRUPTS ARE DISABLED TO PROTECT CMOS DATA INTEGR ITY •

THE CMOS ADDRESS REGISTER IS POINTED TO A DEFAULT VALUE AND

THE INTERRUPT FLAG RESTORED TO THE ENTRY STATE ON RETURN.

ONLY THE (ALI REGISTER AND THE NMI STATE IS CHANGEO.

- - - - - - -

-

- - - - -

----------------

- -

---

- - - - -

-

- -

------------------

- --

CMOS_READ

PUSHF

ROL

STC

RCR

CLI

OUT

NDP

IN

PUSH

"DV

RCR

OUT

POP

PUSH

CALL

RET

PROC

AL, I

AL,I

NEAR

CMOS _PORT, AL

AL,CMOS_DATA

AX

AL,CMOS_REG_D s 2

AL, I

CMOS_PORT, AL

AX

CS

CMOS_POPF

READ LOCATION (ALI INTO (ALI

SAVE INTERRUPT ENABLE STATUS AND FLAGS

MOVE NMI BIT TO LOW POSITION

FORCE NMI BIT ON IN CARRY FLAG

HIGH BIT ON TO DISABLE NMI OLD IN CY o

I SABLE INTERRUPTS

ADDRESS LOCATION AND DISABLE NM[

I/O DELAY

READ THE REQUESTEO CMOS LOCAT I ON

SAVE (AHI REGISTER VALUE AND CMOS BYTE

GET ADDRESS OF DEFAULT LOCATION

PUT ORIGINAL NMI MASK. BIT INTO ADDRESS

SET OEFAULT TO READ ONL.Y REGISTER

RESTORE (AH ~ AND (AL 1:1: CMOS BYTE

-PLACE CODE SEGMENT IN STACK AND sHANDLE POPF FOR B- LEVEL 602a6

RETURN WITH FLAGS RESTORED

ENDP CMOS_READ

CMOS_POPF

IRET

PROC NEAR POPF FOR LEVEL B- PARTS

RETURN FAR AND RESTORE FLAGS

CMOS_POPF ENDP

- CMOS WR [TE - - - - - - - - - - - - - - - - - - - - - - - --- - - - - - - - , - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ­

WRITE BYTE TO CMOS SYSTEM CLOCK CONFIGURATION TABLE

INPUT: (AL)

=

(AHI

=

CMOS TABLE ADDRESS TO BE WRITTEN TO

BIT 7

=

0 FOR Nidi ENABLED AND I FOR NMI DISABLED ON EXIT

81TS 6-0 = ADDRESS OF TABLE LOCATION TO WRITE

NEW VALUE TO BE PLACED IN THE ADDRESSED TABLE LOCATION

:

OUTPUT: VALUE IN (AH) PLACED IN LOCATION (ALI WITH NMI LEFT DISABLED

IF BIT 7 OF (ALI IS ON. DURING THE CMOS UPDATE BOTH NMI AND

NORMAL INTERRUPTS ARE 01 SABLED TO PROTECT CMOS DATA INTEGR ITY •

THE CMOS ADDRESS REGISTER IS POINTED TO A DEFAULT VALUE AND

THE INTERRUPT FLAG RESTORED TO THE ENTRY STATE ON RETURN •

-

-

ONLY THE CMOS LOCATION AND THE NMI STATE IS CHANGED. --------------------------

-

------------

-

-----

- - - - - -

----------------:

CMOS WRITE

PUSHF

PUSH

ROL

STC

RCR

CLI

OUT

MOV

OUT

MOV

RCR

OUT

POP

PUSH

CALL

RET

PROC

AX

AL,I

AL,l

NEAR

CMOS PORT, AL

AL,AH

CMOS DATA,AL

AL, CMOS REG 0-2

AL,I -

CMOS PORT, AL

AX

CS

CMOS_POPF

WRITE {AHI TO LOCATION (ALl

SAVE INTERRUPT ENABLE STATUS AND FLAGS

SAVE WORK REGISTER VALUES

MOVE NMI BIT TO LOW POSITION

FORCE NMi BIT ON IN CARRY FLAG

HIGH BIT ON TO 01 SABLE NMI OLD IN CY o I SABLE INTERRUPTS

ADDRESS LOCATION AND DISABLE NMJ

GET THE DATA BYTE TO WR I TE

PLACE IN REQUESTED CMOS LOCATION

GET ADDRESS OF DEFAULT LOCATION

PUT ORIGINAL NMI MASK BIT INTO ADDRESS

SET OEF AUL T TO READ ONLY REG I STER

RESTORE WORK REG I STERS

-PLACE CODE SEGMENT IN STACK AND

-HANOLE POPF FOR 8- LEVEL 80286

ENDP

TEST4 5-81

IBM Persona! Computer MACRO Asse",bler Version 2.00

TEST4 ---06/10/85 POST AND BIOS UTILITY ROUTINES

".

I 15 0034

!! 6 0034 2E: 8E IE 003A R

I 17 0039 C3

"B

119 003A ---- R

120

121 003C

'"

124

,'5

"7

,'9

130

131

132

! 33 003C

134 003C F1 C5 3FFF

135 0040 15 08

13_

137 0042 56

138 0043 81 E6 3FFF

139 0047 OB EE

140 0049 5E

141 004A

142 004A E8 0063 R

143 0040 IE

144 004E E8 0034 R

145 0051 F6 06 0010 R 01

146 0056 74 02

147

148 0058 IF

149 0059 C3

150

151 005A

152 005A FA

153 005B AO 0015 R

154 005E E6 80

155 0060 F4

156 0061 E8 F7

157

158 0063

159

'_0

161 0063

170

17 I

172

173

174

175

17_

177

162 0063 2E: 8A 04

163 0066 46

164 0061 50

165 0068 E8 0128 R

166 0068 58

167 006C 3C OA

168 006E 15 F3

169 0070 C3

0071

17B

179

1BO

IBI

IB' 007 I

I B3 0071 ge

1B4 0012 FA

IB5 0073 OA Fb

1B_ 0075 7. IE

I B7 0017

IBB 0017 83 7.

I B9 0079 B9 0500

190 007C E8 OOAF R

191 007F B9 C233

192 0082 E8 00F5 R

193 0085 FE CE

19. 0087 75 EE

195

19_ 0089 IE

197 008A E8 0034 R

19B 0080 80 3E 0012 R 01

199 0092 IF

'00 0093 7. C5

20 I

'02

0095

'03 0095 83 12

'04 0097 89 0488

205 009A E8 OOAF R

20_ 0090 B9 8118

207 OOAO E8 00F5 R

20B 00A3 FE CA

209 00A5 75 EE

210

211 00A7 89 8118

21 , OOAA E8 00F5 R

213 OOAD '10

214 OOAE C3

"S

21_ OOAF

1-2

06-10 85

PAGE

DDS PROC

MOV

RET

NEAR

DS,CS:DDSDATA

LOAD (OS) TO DATA AREA

PUT SEGMENT VALUE OF DATA AREA INTO OS

RETURN TO USER WITH (DS)= DATA

SEGMENT SELECTOR VALUE FOR DATA AREA DDSDATA OW

DDS ENDP

DATA

1--E MSG -- P MSG --- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ­

THIS SUBROUTINE WILL PRINT A MESSAGE ON THE DISPLAY

ENTRY REQU I REMENTS,

51 = OFFSET(ADDRESS) OF MESSAGE 8UFFER

CX

=

MESSAGE 8YTE COUNT

MAXIMUM MESSAGE LENGTH IS 36 CHARACTERS

8P = 81T 0=E161/E162, BIT I=CONFIG BAD, 2-15= FIRST MSG OFFSET

-

-

-

----------------

----------

~

------------

- - --- - -------­

E_MSG PROC

TEST

~NZ

NEAR

BP ,03FFFH

E_MSGI

CHECK FOR NOT FIRST ERROR MESSAGE

SKIP IF NOT FIRST ERROR MESSAGE

PUSH

AND

DR

POF

CALL

PUSH

CALL

TEST

JZ

FOP

RET

MFG HALTI

CLI

MOV

OUT

HLT

~MP

51

SI,03FFFH

BP,SI

51

SAVE MESSAGE POINTER

USE LOW 14 BITS OF MESSAGE OFFSET

AS FIRST ERROR MESSAGE FLAG

(BIT 0

=

E161/E162, BIT 1

=

BAD_CONFIG

P MSG

OS

DDS

PR I NT MESSAGE

SAVE CALLERS (OS)

; POINT TO POST/BIOS DATA SEGMENT

BYTE PTR "EQU I P FLAG, 0 I H; LOOP IHAL T ON ERROR SW ITCH ON ?

MFG_HAL T YES THEN GO TO MANUF ACTUR I NG HALT

OS RESTORE CALLERS (OS)

AL,I/IMFG ERR FLAG

MFG PORT ,AL-

MFG_HAL T

MANUF ACTUR I NG LOOP MODE ERROR TRAP

OJ SABLE INTERRUPTS

RECOVER ERROR 1NO I CA TOR

SET INTO MANUFACTURING PORT

HAL T SYSTEM

HOT NMI TRAP

E_MSG ENDP

P _MSG PROC

MOV

INC

PUSH

CALL

POP

CMP

~NE

RET

ERR_BEEP

PUSHF eLI

OR

~Z

GI:

MOV

MOV

CALL

MOV

CALL

DEC

~NZ

PUSH

CALL eMP

POP

~E

G3:

MOV

MOV

CALL

MOV

CALL

DEC

~NZ

ERR_BEEP

MOV

CALL

POPF

RET

NEAR

AL,CS: [51]

SI

AX

PRT HEX

AX -

AL,LF

P _MSG

PROC

DH,OH

03

8L,! 12

CX,1280

BEEP

CX,49115

WAITF

DH

01

OS

DDS

"MFG TST,OIH

OS -

MFG_HALT

ENDP

NEAR

BL,I8

CX,I208

BEEP

CX,33144

WAITF

DL

G3

CX,33144

WAITF

DISPLAY STRING FROM ICS:)

PUT CHARACTER IN (All

PO I NT TO NEXT CHARACTER

SAVE PRlNT CHARACTER

CALL VIDEO 10

RECOVER PRINT CHARACTER

WAS IT LINE FEED?

NO, KEEP PRINTING STRING

P _MSG ENDP

; --

;

ERR BEEP - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ­

THIS PROCEDURE WILL ISSUE LONG TONES (1-3/4 SECONDS) AND ONE OR

MORE SHORT TONES (9/32 SECOND) TO INDICATE A FAILURE ON THE

PLANAR BOARD, A BAD MEMORY MODULE, OR A PROBLEM WITH THE CRT. •

ENTRY PARAMETERS:

DH

=

NUMBER OF LONG TONES TO 8EEP.

; DL = NUMBER OF SHORT TONES TO BEEP.

1-------- - - - - --------- ----- - - - ----------- ---------------- -- - - ------­

SAVE FLAGS

DISABLE SYSTEM INTERRUPTS

ANY LONG ONES TO BEEP

NO, DO THE SHORT ONES

LONG BEEPS

COUNTER FOR LONG BEEPS (1-3/4 SECONDS) o I V I SOR FOR 932 HZ

DO THE BEEP

2/3 SECOND DELAY AFTER LONG BEEP

DELAY BETWEEN BEEPS

ANY MORE LONG BEEPS TO DO

LOOP TILL ~ONE

SAVE OS REGISTER CONTENTS

MANUF ACTUR I NG TEST MODE7

RESTORE ORIGINAL CONTENTS OF (OS)

YES STOP BL I NK I NG LED

SHORT BEEPS

COUNTER FOR A SHORT BEEP (9 132)

DIVISOR FOR 987 HZ

DO THE SOUND

1/2 SECOND DELAY AFTER SHORT BEEP oELA Y BETWEEN BEEPS

DONE WITH SHORT BEEPS COUNT

LOOP TILL DONE

1/2 SECOND DELAY AFTER LAST 8EEP

MAKE I T ONE SECOND DELAY BEFORE RETURN

RESTORE FLAGS TO ORIGINAL SETTINGS

RETURN TO CALLER

5-82 TEST4

IBM Pe"lIon;l1 Compute.MACRO Alillemble!"

TEST4 ---06/10/85

Ve.-s,on 2.00

POST AND BIOS UTILITY ROUTINES

217

218

219

220

221

222

223

224

225

226

22T OOAF

228 OOAF 9C

229 OOBO FA

230 OOB 1 BO B6

231 00B3 E6 43

232 00B5 E8 00

233 OOBl 8A C 1

234 00B9 E6 42

235 0088 EB 00

236 OOBO 8A C5

231 OOBF E6 42

238 OOCI E4 61

239 OOC3 81. EO

240 DOCS DC 03

241 OOC1 E6 61

242 00C9 90

243 0 DCA

244 a

DCA 89 0406

245 OOCD Ea 00F5 R

246 0000 FE C8

241 0002 15 F6

248

249 0004 9C

250 0005 FA

251 0006 E4 61

252 0008 OC FC

253 0001. 22 EO

254 OOOC 8A C4

255 OODE 24 FC

256 ODED E6 61

251 00E2 90

258 00E3 B9 040B

259 00E6 E8 00F5 R

260 00E9 9C

261 OOEA FA

262 00E8 E4 61

263 OOEO 24 03

264 OOEF OA C4

265 OOFI E6 61

266 00F3 90

261 00F4 C3

268

269 00F5

270

271

212

273

274

275

27.

277

278

279

280

201

282 00F5

283 00F5 50

264

285 00F6

286 00F6 E4 61

281 00F8 24 10

288 OOFA 3A C4

2S9 OOFC 14 F8

290

291 OOFE 8A EO

292 0100 E2 F"4

293

294 0 I 02 58

295 0103 C3

296

291 0104

298

299

300

301

302

303

304 0104

305 0104 50

306 0105 B8 8E8E

301 aiDS E8 0000 R

30S OIOB OC 20

309 0 T00 86 EO

310 OlOF E8 OOIA R

311 011258

312 011381 CO 4000

3130111C3

314

315 0 I 18

1-3

06-10-85

PAGE

-- BEEP - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- - - - - - - - -- -­

ROUTINE TO SOUND THE BEEPER USING TIMER 2 FOR TONE

ENTRY:

(BLI

ICX)

=

DURATION COUNTER I 1 FOR 1/64 SECOND)

=

FREQUENCY DIVISOR (1193180/FREQUENCY) ((331 FOR 886 HZ)

EX IT: lAX}, (BLI, (CX} MODIFIED.

--------------------------------------------------------------

BEEP PROC

PUSHF eLI

MDV

OUT

"MP

MDV

OUT

JMP

MDV

OUT

IN

MOV

OR

OUT

POPF

NEAR

AL,IOIIOIIOB

TIMER+3,AL

"2

AL,CL

TIMER+2,AL

"2

AL,CH

TIMER+2,AL

AL,PORT B

AH,AL -

AL,GATE2+SPK2

PORT_B.AL

SETUP T I MER 2

SAVE INTERRUPT STATUS

BLOCK INTERRUPTS DURING UPDATE

SELECT TIMER 2,LSB,MSB,BINARY

WRITE THE TIMER MODE REGISTER

I/O DELAY

DIVISOR FOR HZ (LOW)

WR I TE T I MER 2 COUNT LSB

1/0 DELAY

DIVISOR FOR HZ tHIGH)

WR I TE T I MER 2 COUNT MSB

GET CURRENT SETT I NG OF PORT

SAVE THAT SETTING

GATE T I MER 2 AND TURN SPEAKER ON

AND RESTORE INTERRUPT STATUS

G1 :

CX.I035

WAITF

BL

G7

, /64 SECOND PER COUNT IBL)

DELA Y COUNT F"OR 1 164 OF A SECOND

GO TO BEEP DELAY I 164 COUNT

• BL) LENGTH COUNT EXP I RED?

NO CONT I NUE BEEP I NG SPEAKER

MOV

CALL

DEC

"NZ

PUSHF eLi

IN

DR

AND

MOV

AND

OUT

POPF

MOV

CALL

PUSHF eLI

IN

AND

DR

OUT

POPF

RET

AL,PORT B

AL, NOT TGATE2+SPK2 I

AH,AL

AL,AH

AL ,NOT (GATE2+SPK2)

PORT_B.AL

CX,1035

WAITF

AL.PORT B

AL,GATE2+SPK2

AL,AH

PORT_B,AL

SAVE I NTERRUPT STATUS

BLOCK INTERRUPTS DURING UPDATE

GET CURRENT PORT VALUE

I SOLATE CURRENT SPEAKER BITS I N CASE

SOMEONE TURNEO THEM OFF OUR I NG BEEP

RECOVER VALUE OF PORT

FORCE SPEAKER OAT A OFF

AND STOP SPEAKER T I MER

RESTORE INTERRUPT FLAG STATE

FORCE 1/64 SECOND DELAY I SHORT)

MINIMUM DELAY BETWEEN ALL BEEPS

SAVE INTERRUPT STATUS

SLOCK INTERRUPTS OUR I NG UPDATE

GET CURRENT PORT VALUE 'N CASE

SOMEONE TURNED THEM ON

RECOVER VALUE OF" PORT B

RESTORE SPEAKER STATUS

RESTORE INTERRUPT FLAG STATE

BEEP ENDP

; - -- WA I TF ---- ----- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- - - - - - - - - - - - - - - - - - ­

FIXED TIME WAIT ROUTINE (HARDWARE CONTROLLED NOT PROCESSOR)

ENTRY:

(CX)

=

COUNT OF 15.085731 MICROSECOND INTERVALS TO WAIT

MEMORY REFRESH TIMER ! OUTPUT USED AS REFERENCE

EXIT:

(CX)

=

0

AFTER ICXl TIME COUNT (PLUS OR MINUS 16 MICROSECONDS)

;

------­

.AITF PROC

PUSH

WAITFI;

IN

AND eMP

"E

"OV

LOOP

NEAR

AX

AL,PORT B

AL ,REFRESH BIT

AL,AH -

WAITFI

AH,AL

WAITn

DELAY FOR ICX)'15.085131 US

SAVE WORK REGISTER {AHI

USE TIMER 1 OUTPUT BITS

READ CURRENT COUNTER OUTPUT STATUS

MASK FOR REFRESH DETERMINE BIT

DID IT .JUST CHANGE

WAIT FOR A CHANGE IN OUTPUT L.INE

SAVE NEW FLAG STATE

DECREMENT HALF CYCLES TILL COUNT END

POP

RET

AX RESTORE {AH)

RETURN ICX)

=

0

WAITF ENDP

; --- CONFIG BAD - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ­

SET-CMOS DIAG WITH CONFJG ERROR BIT (WITH NMI DISABLED)

(BP) BIT-'4 SET ON TO INDICATE CONFIGURATION ERROR

CONFIG BAD

PUSH

MDV

CALL

OR

XCHG

CALL

POP

OR

RET

PROC

AX

NEAR

AX,X'(CMOS DIAG+NMII

CMOS READ -

AL.8AD CONFIG

AH,AL -

CMOS WR ITE

AX

BP,04000H

ENDP

ADDRESS CMOS DIAGNOSTIC STATUS BYTE

GET CURRENT VALUE

SET BAD CONFIGURATION BIT

SETUP FOR lliR I TE

UPDATE CMOS WITH BAD CONFIGURATION

SET CONFIGURATION BAD FLAG IN IBPl

TEST4 5-83

31.

311

318

319

320

321

322

323

324

325 0116

326011850

321 01 19 CO E6 04

~28 0 I 1 C E8 O! 22 R

329 0 I IF 56

330 012024 OF

331

332

333 0122

334 01220490

335 0124 21

336 0125 1440

331 0121 21

338

339 0128

340 0128 B4 OE

34 I 0 12A B1 00

342 012C CD 10

343 012E C3

344

345 012F

346 012F

341 012F

348

34.

350

351

352

353

354 012F

355 012F 8A C6

356 0131 EB 0118 R

357 0134 8A CZ

358 0136 E8 0118 R

359 0139 BO 30

360 0138 E8 0 I 28 R

361 013E 80 20

362 0140 E8 0126 R

363 0143 C3

364

365 0144

3 ••

3.7

368

3.9

370

371

372

373

374

315 0144

316 014406

311 014551

378 014601 E1

379

380

381

382 01411 6A 20

383 014A 01

384 014B AA

385 014C 4F

38.

387

388

389 0140 6A 30

390 014F 01

391 0150 AA

392 0151 4F

393 0 I 52 6A 311

394 015401

395 0155 AA

396 01564F

3"

3.8

3"

400 0151 6A 28

401015901

402 015A 53

403 015B 52

404 015C 51

405 015033 C9

406 015F BA 03DA

401 011>293

408 0163

409 0163 EC

410 0164 A8 09

411 0166 EI FB

412 016893

4130169AA

414

415 016A 59

416 0168 SA

411 016C 58

418 016D5F

419 QI6E 01

420 0 16F C3

421

422 0110

IBM Personal Computer MACRO Assembler Version 2.00

TEST4 - - - 06/!0/65 POST AND 810S UTILITY ROUTINES

1-4

06-10-65

PAGE i - - - XPC_BYTE -- XLATE_PR -- PRT_HEX - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ­

CONVERT AND PR I NT ASCII CODE CHARACTERS

AL CONTAINS NUMBER TO BE CONVERTED.

AX AND BX DESTROYED.

;­

XPC_BYTE

PUSH

5HR

CALL

POP

ANO

PROC

AX

AL,4

XLAT_PR

AX

AL,OFH

NEAR DISPLAY TWO HEX DIGITS

SAVE FOR LOW NIBBLE DISPLAY

NIBBLE SWAP

DO THE HIGH NIBBLE DISPLAY

RECOVER THE NI88LE

[SOLATE TO LOW NIBBLE

F ALL I NTO LOW NIBBLE CONVERS [ON

XLAT _PR PROC

AOO

OAA

ADC

DAA

PRT SEG PROC

MOV

CALL

MOV

CALL

OOV

CALL

MDV

CALL

RET

NEAR

AL,090H

AL, Q40H

NEAR

AL,DH

XPC BYTE

AL,OL

XPC BYTE

AL,TO'

PRT HEX

AL, T ,

PRT_HEX

CONVERT CO-OF TO ASCII CHARACTER

ADD FIRST CONVERSION FACTOR

AD.JUST FOR NUMER I C AND ALPHA RANGE

ADD CONVERS I ON AND AD.JUST LOW NIBBLE

Ao.JUST HIGH N (BBLE TO ASC I I RANGE

PRT_HEX PRoC

OOV

~OV

INT

RET

PRT HEX ENoP

XLAT PR ENDP

XPCJ3YTE

NEAR

AH,OEH

SH,O

10"

DISPLAY CHARACTER IN lAL' COiltMAND

ENDP

1 - -- PRT_SEG -- - - - - - - - - - - - - - - - - - - - -- - - - - - - - - - - - - - - -- - - - - - - - - - ­

PRINT A SEGMENT VALUE TO LOOK LIKE A 21 BIT ADDRESS

OX MUST CONTAIN SEGMENT VALUE TO BE PRINTED

I - - - - --- - - - - - - - - - - - - - - --- - - - - - - - - - - - -- - - - -- - - - - - - - - - - - - - --- - - - - -­

GET MSB

DISPLAY SEGMENT HIGH BYTE

L5B

DISPLAY SEGMENT LOW BYTE

PRINT A '0 '

TO MAKE LOOK LIKE ADDRESS

ADD END I NG SPACE

PRT _SEG ENDP

PROT_PRT_HEX ­

;

;

;

;

; - -

;

PUT A CHARACTER TO THE DISPLAY 8UFFERS WHEN IN PROTECTED MODE

(AL': ASCII CHARACTER

101': DISPLAY REGEN BUFFER POSITION

PROT PRT HEX

PUSH

PUSH

SAL

; - - - - -

PROC

E5

01

Dr. t

NEAR

MONOCHROME V IDEO CARD

PUSH

POP

PUSH

PUSH

PUSH

XDR

ODV

XCHG

PROT_S;

IN

TEST

LOOPZ

XCHG

STOSB

PUSH

POP

STOSB

DEC

BYTE PTR C SWCRT PTR

ES - -

01

ENHANCED GRAPHICS ADAPTER

PUSH

POP

STOS8

DEC

PUSH

PDP

STOS8

DEC

BYTE PTR E CCRT PTR

ES

01

- ­

BYTE PTR E CCRT PTR2

ES

01

COMP A T IBLE COLOR

- -

BYTE PTR C CCRT PTR

ES - ­

BX

OX

CX

CX,CX

DX.03DAH

AX,BX

AL,OX

AL,RVRT+RHRZ

PROT S

AX,BX

POP

POP

POP

POP

PDP

RET

CX

OX

BX

01

E5

SAVE CURRENT SEGMENT REGISTERS

MULTIPLY OFFSET BY TWO

GET MONOCHROME BUFFER SEGMENT SELECTOR

SET IES) TO B/W DISPLAY BUFFER

PLACE CHARACTER I N BUFFER

AD.JUST POINTER SACK

ENHANCED COLOR 0 I SPLA Y PO [NTER LOW 64K

LOAD SEGMENT SELECTOR

PLACE CHARAcTER I N BUFFER

AD.JUST PO I NTER BACK

ENHANCED COLOR DISPLAY POINTER HI 64K

LOAD SEGMENT SELECTOR

PLACE CHARACTER IN BUFFER

AD.JUST POINTER BACK

SET IDS) TO COMPATIBLE COLOR MEMORY

SAVE WORK REGISTERS

Tlt.lEOUT LOOP FOR -SAD" HARDWARE

STATUS ADDRESS OF COLOR CARD

SAVE IN IBX) REGISTER

I GET COLOR CARD STATUS

CHECK FOR VERT 1 CAL RETRACE (OR HORZ 1

TIMEOUT LOOP TILL FOUND

RECOVER CHARACTERS

PLACE CHARACTER ! N BUFFER

RESTORE REGI STERS

5-84

TEST4

IBM Personal Computer MACRO Assembler Version 2.00

TEST.. - - - 06/10/85 POST AND 8105 UTlL.ITY ROUTINES

1-'

06-10-85

423

424

425

426

427

428 0110

42' 0110 28 C9

430

431 0172

432 011232 CO

433 011""

434 011"" 02 07 .3.

0116 .. 3

0111 E2 FB

431

,

436 0119 OA CO

439 0118 C3

440

442

.. onc

443

PAGE

;

ROM CHECKSUM SUBROUT I NE

- - -- -- ---

-

-

---------------­

ROM CHECKSUM

SUB

ROM_L.:

ADD

INC

LOOP

DR

RET

ROM_CHECK SUM

PROC

CX.CX

ROM CHECKSUM CNTI

XOR AL,AL

AL. [BX]

BX

ROM_L

AL,AL

ENDP

NEAR

NUMBER OF BYTES 10 ADD IS 64K

ENTRY FOR OPT IONAl ROM 1EST

GET (DS:BXl

POINT TO NEXT BYTE

ADD All 8YTES IN ROM MODULE

SUM::;: O?

444

445

446

447

446

44' o

17C

017C88----R

450 017F 8E CO

451 0181 2A E4

452 0183 8A 47 02

THIS ROUTINE CHECKSUMS OPTIONAL ROM MODULES AND

IF CHECKSUM IS OK, CALLS INI1IALlZATION/TEST CODE IN MODULE

ROM_CHECK

MO'

MD'

SUB

453 0186 CI EO 09

•••

0189 88 C8

455 0188 CI E8 04

456 018E 03 DO

4"

0190 E8 0172 R

456 0193 H 05

MDV

SHL

MDV

SHR

ADD

CALL

JZ

'59

460 0195 E8 0000 E

461 0198 EB 13

CALL

JMP

462

463

464 o

19A o

19A 52

ROM CHECK I:

PUSH

" 5 019B 26: C1 06 0061 R 0003

466 01A2 261 8C IE 0069 R

467 01A7 261 FF IE 0067 R

MDV

MD'

CALL

468 01 AC SA POP

PROC

AX,DATA

ES ....

X

AH,AH

NEAR

AL, [8X+2]

AX.9

CX,AX

AX,4

OX,AX

ROM CHECKSUM CNT

ROM::::CHECK_l ­

ROM ERR

SHORT ROM_CHECK_END

; POINT ES TO DATA AREA

; ZERO OUT AH

I GET LENGTH I NO I CATOR

; MULTIPLY 8'1' 512

, SET COUNT

SET PO I NTER TO NEXT MODUL.E

DO CHECKSUM

POST CHECKSUM ERROR

AND EXIT

OX

ES:OIO ROM INIT ,0003H

ES: III I O-ROM-SEG, OS

SAVE POINTER

LOAD OFFSET

; loOAD SEGMENT

DWORD PTR ES:(l1O ROM INIT; CALL INITIALIZEITEST ROUTINE

OX -

4 • •

410 DIAD 4"

01AD C3

412

ROM CHEC", END:

RET ; RETURN TO CALLER

413 OIAE

414

415

41.

4n

416

479

480

481 01 AE

482 01AE BO FF

483 OIBO E8 0000 E

484 0lB3 E3 23

485

486 0185 3C FA

487 01B7 75 IF

486

489 0189 80 FD

490 0188 E6 21

491 01BD C6 06 0068 R 00

492 OICZ FB

493 0lC3 83 OA

494 OICS 2B C9

495 OICl

'9' 0lC1 F6 06 0068 R 02

497 OICC 75 06

496 OICE E2 F1

4.9

500 0100 FE C8

50 I 0102 75 F3

502 0104

503 0104 E4 60

504 0106 8A 08

505 0108

50. 0108 C3

501

50. 0109

509

510

511

512

513

514

515 0109

516 01 D9 FB

517 01DA 50

518 01DB E4 80

51' 0100 34 40

520 OIOF E6 80

521 01E1 BO 20

522 01E3 E6 20

523 01 E5 58

524 01 E6 CF

525

526 01El

ROM_CHEC'"

; - - - "'80 RESET - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ­

;

;

;

THIS PROCEDURE WILL SEND A SOFTWARE RESET TO THE KEYBOARD.

SCAN CODE

SCAN CODE

OAAH

065H

SHOULD BE RETURNED TO THE PROCESSOR.

IS DEFINED FOR MANUFACTURING TEST

KBD_RESET

MOV

CALL

JCXZ

GIll

G12:

G13:

CMP

JNZ

MDV

OUT

MOV

511

MOV

SUB

TEST

JNZ

LOOP

DEC

JNZ

IN

MOV

RET

ENOP "'BD_RESET

;

;

;

- -

---------

------ -- - - - - - -

------------------

--

---------­

BLINK LED PROCEDURE FOR MFG RUN-IN TESTS

IF LED IS ON, TURN IT OFF. IF OFF, TURN ON.

1-- - - --- - --- - - - - - - - - - - - - - - - - - - - - - - - - - - -- - - --- - - - - - - - - - -­

BLINK INT

ST!

PUSH

IN

XOR

OUT

MD'

OUT

PDP

IRET

ENDP

PROC

AL,OFFH

NEAR

XMIT_8042

013

AL,KB_ACK

G13

AL.OFDH

INTA01,AL

01 NTR_FLAG, 0

8L,I0

CX,CX

OINTR_FLAG.02H

G12

Gil

BL

Gil

AL.PORT_A

BL,AL

PROC

AX

AL,MFG PORT

AL,O I 00'00008

MFG PORT,AL

AL,£OI

INTAOO,AL

AX

ENDP

NEAR

SET KEY80ARD RESET COMMAND

GO I SSUE THE COMMAND

EXIT IF ERROR

ENABLE KEY80ARD INTERRUPTS

WRITE 8259 INTERRUPT MASK REGISTER

RESET INTERRUPT INDICATOR

ENABLE INTERRUPTS

TRY FOR 400 MILLISECONDS

SETUP INTERRUPT TIMEOUT COUNT

DID A KEYBOARD I NTERRUPT OCCUR

YES READ SCAN CODE RETURNED

NO LOOP TILL TIMEOUT

TRY AGAIN

READ KEYBOARD SCAN CODE

SAVE SCAN CODE JUST READ

RETURN TO CALLER

SAVE AX REGISTER CONTENTS

READ CURRENT VALUE OF MFG PORT

FLIP CONTROL BIT

RESTORE AX REG! STER

?

TEST4

5-85

527

528

529

530

531

532

53'

53<

535

536

537

538

539

540

541

542

54,

544

= 0012

0444

545 =

0007 ooeo

546

547 01E7

548 01 E7 60

5.9 01E8 IE

550 0lE9 E8 0034 R

551

552

55,

554

OIEC 28 o lEE A2

01FI A3

0lF4 A3

CO

0070 R

006C R

006E R

555 01F7 BO 8E

556 0lF9 E8 0000 R

557

558

OIFC 24

01FE 28

C4

C9

559 0200 75 64

560 0202

561 0202 80

562

56'

564

0204 E8

0207 A6

0209 El

565

8A

0000 R

80

F7

566

567

020B E3

0200

59

566 0200 80 8A

569 020F E8 0000 R

570 0212 A8 80

571 0214 EO F7

572

573 0216 E3 4E

57.

575 0218 80 80

576 021A E8 0000 R

571 0210 3C 59

576

579

021F 71 48

560 0221 E5 021F R

581 0224 68 C8

582

5.,

0226 C 1

0229 B3

E9 02

12

58. 0228 F6 E3

585 0220 03 C8

586 022F 80 82

567 0231 E8 0000 R

566 0234 3C 59

56'

590

0236 71

0238 E6

31

027F R

591 0238 50

592 023C 01 E8

5 . ' 023E 03

59. 0240 56 ce

595 0241 88 0444

596 0244 Fl E3

597 0246 03 C8

596

599

600

601

0248 80

024A E8

0240 3C

024F 71

64

0000 R

23

16

602

603 0251 E8 027F R

604 0254 68 DO

605 0256 83 07

606 0258 F6 E3

607 025A 03 Cl

608

609

025C 83

025F 59

02 00

16 006E R

006C R 610 0263 A3

6 "

0266

612 0266 IF

613 0261 61

614 0268 C3

61'

616 0269

617 0269 IF

. , 8 026A 61 ."

620

026B 8E

026E E8

0000 E

621

622

0211 85

0274 E8

003C R

8E8E

0000 R

623 0271 OC 04

62. 0219 86 C4

625 027B E6 001 A R

626 021E C3

627

628 021F

.29

630 027F

631 027F 8A EO

.32 0261 CO EC 04

633 0284 24 OF

63' 0286 05 OA

635 0288 C3

636

637 0289

IBN Pe,.sonal Compute,. NACRO Assemble,.

TE5T4 - - - -

Version 2.00

06/10/85 POST AND BIOS UTILITY ROUTINES

1-6

Ob-10-85

PAGE

;

;

;

I - - ­ - - - - - ­ - ­ - - - ­ - - - - ­ - - - - - ­ - ­ - - - - - - - - - ­ - ­ - - ­ - - - - - - - - - - ­ - - - - - ­ - - - - - - - - - ­ - ­ - - - - - ­

; THIS ROUTINE INITIALIZES THE TIMER DATA AREA IN THE ROM BIOS

DATA AREA.

HRIMIN:SEC

IT IS CALLED BY THE POWER ON ROUTINES.

FROM CMOS TO TIMER TICS.

I S SET TO ZERO.

IT CONVERTS

IF CMOS IS INVALID, TIMER

INPUT NONE PASSED TO ROUTINE BY CALLER

CMOS LOCATIONS USED FOR TIME

OUTPUT CIT I MER LOW

:i:~~=:~~~H

ALL REG I STERS UNCHANGED

;------------------------------------------------------------------------------­

I

; TIMER DATA CONVERSION EQUATES COUNTS SEC

COUNTS-MIN

COUNTS-HOUR

UPDATE:TlMER

EQU

EQU

EQU

EQU

18

1092

7

100000008

; 65543 65536

; RTC UPDATE IN PROCESS BIT MASK

SET TOO PROC

PUSHA

PUSH

CALL

SUB

MOV

MOV

MOV

MOV

CALL

AND

SUB

"HZ

UIP:

MOV

CALL

TEST

LDOPZ

MOV

CALL eMP

"A

CALL

MOV

MOV

MUL

ADO

ADC

MOV

MOV

POD DONE:

POP

POPA

RE7

CALL

MOV

SHR

MOV

MUL

ADD

MOV

CALL eMP

"A

CALL

PUSH

SHR

ADD

POP

MOv

MUL

ADD

MOV

CALL eMP

"A

NEAR

OS

DDS

AX,AX

ClTltotER OFL,AL

.TIMER-LOW,AX

ClTIMER-HIGH,AX

I ESTABLI SH SEGMENT

RESET TIMER ROLL OVER INDICATOR

AND TIMER COUNT

AL,CMOS DIAG+NMI CHECK CMOS VALIDITY

CMOS READ

~;

:

~~o

_SA HeAD_ CK

, READ DIAGNOSTIC LOCATION IN CMOS

SUM+CMO~-~~~-~~~~ERY,

CHKSUM ERROR, CLOCK ERROR

POD_DONE I CMOS NOT VALID -­ TIMER SET TO ZERO

~~Q~M~~A~EG

_A +NM I

AL,UPDATE

UIP -

T I MER

ACCESS REG I STER A

READ CMOS CLOCK REGISTER A

UIPOFF:

JCXZ POD_DONE

"OV

CALL

AL. CMOS REG A+NM I

CMOS READ -

TEST AL,UPDATE TI MER

LOOPNZ UIPOFF -

JCXZ POD_DONE

AL. CMOS SECONDS+NM I

CMOS READ

AL,59H

TOO_ERROR

CYT BINARY cX,AX

CX,2

BL,COUNTS SEC

BL -

CX,AX

AL,CMOS MINUTES+NMI

CMOS READ

AL,59H

TOO ERROR

CVT-BINARY

AX­

AX,I

CX,AX

AX

BX,COUNTS MIN

BX -

CX,AX

AL,CMOS HOURS+NMI

CMOS READ

AL,23H

TOO_ERROR

CVT BINARY

DX,AX

BL,COUNTS HOUR

BL -

AX,CX

DX,OOOOH

ClTlMER HIGH,DX

(ilTI MER:LOW • AX

OS

I WAIT TILL UPDATE 81T IS ON

CMOS CLOCK STUCK IF TI MEOUT

ACCESS REGI STER A

READ CMOS CLOCK REG I STER A

NEXT WAIT TILL ENO OF UPDATE

CMOS CLOCK STUCK 1FT I MEOUT

TIME JUST UPDATED

ACCESS SECON~S VALUE IN CMOS

ARE THE SECONDS WITHIN LIMITS?

GO IF NOT

CONVERT IT TO BINARY

MOVE COUNT TO ACCUMULAT 1 ON REGI STER

ADJUST FOR SYSTEMATIC SECONDS ERROR

I COUNT FOR SECONDS

ACCESS MINUTES VALUE IN CMOS

ARE THE MINUTES WITHIN LIMITS?

GO IF NOT

CONVERT I T TO B I NARY

SAVE MINUTES COUNT

ADJUST FOR SYSTEMATIC MINUTES ERROR

ADD ADJUSTMENT TO COUNT

RECOVER 8CO MINUTES VALUE

COUNT FOR MINUTES

ADD TO ACCUMULATED VALUE

ACCESS HOURS VALUE IN CMOS

ARE THE HOURS WITHIN LIMITS?

GO IF NOT

CONVERT IT TO BINARY

I COUNT FOR HOURS

TOO ERROR I

POP paPA

MOV

CALL

MOV

CALL

OR

XCHG

CALL

RET

SET_TOO ENDP

CVT BINARY

MOV

SHR

AND

AAD

RET

OS

SI,OFFSET E163

E MSG

AX,X· (CMOS DIAG+NMI)

CMOS READ -

AL,CMOS CLK FAIL

AL,AH -

CMOS_WR I TE

PROC

AH,AL

AH.4

AL,OFH

NEAR

RESTORE SEGMENT

RESTORE REG I STERS

D I SPLA Y CLOCK ERROR

SET CLOCK ERROR 1 N STATUS

READ D I AGNOST I C CMOS LOCAT I ON

SET NEW STATUS WITH CMOS CLOCK ERROR

MOVE NEW STATUS TO WORK REGI STER

UPDATE STATUS LOCATION

UNPACK 2 BCD DIGITS IN AL

RESULT IS IN AX

CONVERT UNPACKED BCD TO BINARY

~

5-86

TEST4

IBM Per-sonal Comput.er MACRO Assembler VerSIon 2.00

TEST4 - - - 06110/85 POST AND BIOS UTILITY ROUTINES

636

639

640

641

642

643

644

695 0206 58

696 0207

697 0207 CF

696

699 0208

700

701

702

703

70.

70'

706

707 0208

706 0208 50

709 0209 SO 20

710 02DS E6 AO

711 0200 58

712 020E CD OA

113

714 02EO CF

715

116 02El

117

116

719

720

121

722

723

72.

725 02El

726 02Ef 50

727 02E2 32 CO

726 02E4 E6 FO

729

730 02EI!> BO 20

645

646

647

646

649 0289

650 0289 50

651 028A 53

652 0288 80 OB

653 0280 E6 20

654 028F E8 00

655 0291 E4 20

656 0293 8A EO

657 0295 OA C4

658 0297 75 04

659

660 0299 84 FF

66! 0298 EB 2F

662 0290

663 0290 BO OB

664 029F E6 AO

665 02A 1 EB 00

666 02A3 E4 AO

667 02A5 8A F8

668 02A 1 OA FF

669 02A9 14 '0

670

611 02A8 E4 AI

612 02Ao OA C7

673 02AF E8 00

674 0281 E6 Al

675 0283 BO 20

676 0285 EB 00

677 0287 E6 AO

678 0289 E8 00

679 0288

680 0288 E4 2 I

68! 0280 EB 00

682 028F 80 E4 FB

683 02C2 OA C4

684 02C4 E6 2!

685 02C6 E8 00

686 02C8

681 02C8 80 20

688 02CA E6 20

689 02CC

690 02CC 5B

691 02CO IE

692 02CE ES 0034 R

693 0201 se

26 006B R

694 0205' F

731 02E8 E6 AO

732 02EA E6 20

733 02EC 58

734 02EO CD 02

735

736 02EF CF

737

736 02FO

739

7., 02FO

7'2 02FO SO FE

743 02F2 E6 64

7 • • 02F4

7.5 02F4 F4

7.6 02F5 EB FD

7.7

7.6 02F7

149 02F7

150

1-7

06-10-85

PACE

; - - - 011 -tNT ?? H -( IRQ LEVEL ?? 1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ­

TEMPORARY INTERRUPT SERV I CE ROUT I NE FOR POST

THIS ROUTINE IS ALSO LEFT IN PLACE AFTER THE POWER ON DIACNOSTICS

TO SERVICE UNUSED INTERRUPT VECTORS. LOCATION "~INTR FLAG" WILL

CONTAIN EITHER;

I! LEVEL OF HARDWARE I NTERRUPT THAT CAUSED CODE TO BE EXECUTED. OR

21 "FF" FOR A NON-HARDWARE INTERRUPT THAT WAS EXECUTED ACCIDENTALLY.

I - - -- - - - - - - - . - - - - - - - - - - - - - - - -- --- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- --- - - - - - - - - - -­

011 PROC

PUSH

PUSH

MOV

OUT

"MP

IN

MOV

OR

"NZ

MOV

"MP

NEAR

AX

8X

AL.OBH

I NTAOO. AL

'·2

AL,INTAOO

AH,AL

AL,AH

HW_INT

AH.OFFH

SHORT SET_INTR_FLAG

MOV

OUT

"MP

IN

MOV

OR

"Z

IN

OR

"MP

OUT

NOV

"MP

OUT

NOT SEC:

-

"NP

IN

AL,OBH

INTBOO,AL

'_2

AL,INT800

SH,AL

BH,BH

NOT_SEC

AL,INTBOI

AL,BH

'·2

INTB01,AL

AL,EOI

'.2

INT800,AL

SHORT IS_SEC

"MP

AND

OR

OUT

"MP

AL,INTAOI

'.2

AH,OFSH

AL,AH

INTAOI,AL '.2

MOV

OUT

SET I NTR FLAG:

Fiop

PUSH

CALL

MOV

POP

POP

DUMMY RETURN 1:

I RET­

AL,EOI

I NTAOO, AL

8X

OS

DDS

.INTR FLAG.AH

OS

AX

SAVE RECI STER AX CONTENTS

READ IN-SERVICE REGISTER

(FINO OUT WHAT LEVEL BEING

SERV ICEDI

GET LEVEL

SAVE IT

OO? INO HARDWARE ISR ACTIVE)

SET FLAG TO "FF" IF NON-HARDWARE

READ IN-SERVICE REGISTER FROM

INTERRUPT CH I P #2

I/O DELAY

CHECK THE SECOND INTERRUPT CH I P

SAVE IT

CONT I NUE I F NOT

GET SECOND I NTERRUPT MASK

MASK OFF LEVEL BE I NG SERV I CEO

I/O DELAY

SEND EO I TO SECOND CH J P

I/O DELAY

CET CURRENT MASK VALUE

J 10 DELAY

00 NOT DI SABLE SECOND CONTROLLER

MASK OFF LEVEL 8E I NG SERV I CEO

; SET NEW I NTERRUPT MASK

I I/O DELAY

RESTORE IBX) FROM STACK

SAVE ACTIVE (OS)

SET DATA SECMENT

SET FLAG

RESTORE REG I STER AX CONTENTS

NEED I RET FOR VECTOR TABlE

OIl ENOP

1--- HARDWARE INT 11 H -j IRQ LEVEL 9 ) -TO INT OA H - - - - - - - - ­

; REDIRECT SLAVE INTERRUPT 9 TO INTERRUPT LEVEL 2

I THIS ROUTINE FIELDS LEVEL 9 INTERRUPTS AND

;

;

-

CONTROL I S PASSED TO MASTER INTERRUPT lEVEL 2 ------

----- - - - - - - - - - - - - - - -

---------

- ---.- - - - - - - - - - - - - - - _.-.--- - - -

------

- - - -­

RE_D I RECT PROC NEAR

PUSH AX

MOV

OUT

AL,EOI

INTBOO,AL

POP

INT

AX

OAH

I SAVE (AX)

EO I TO S!,.AVE I NTERRUPT CONTROLLER

RESTORE I AX I

C I VE CONTROL TO HARDWARE lEVEL 2

IRET

RE_D I RECT ENOP

; RETURN

; - - - HARDWARE INT 15 H -( IRQ lEVEL 13 I - . - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ­

; SERVICE X287 INTERRUPTS

THIS ROUTINE FIELDS X287 INTERRUPTS AND CONTROL

I S PASSED TO THE Nidi INTERRUPT HANDLER FOR

;-

COMPATIBILITY. -----------

-

----

- - - - -

-------------------

-

--

- - - - - - - -

-

- - -

--_ ..

-

--

- -

----- --

- -­

INT_2S7 PROC

PUSH

XOR

OUT

NEAR

AX

AL,AL

X267,AL

I SAVE (AX)

I REMOVE THE I NTERRUPT REQUEST

MOV

OUT

OUT

POP

INT

AL,EOI

INTBOO,AL

INT"OO,AL

AX

02H

ENABLE THE INTERRUPT

THE SLAVE

THE MASTER

RESTORE (AXI

GIVE CONTROL TO NM I

RETURN

INT_287 ENOP

PROC_SHUTDOWN

PRoe_SI

MOV

OUT

HLT

"MP

PROC SHUTDOWN

COOEENDS

END

PROC

AL, SHUT CMO

STATUS_150RT .AL

PROC_S

ENQP

COMMON 80286 SHUTDOWN '''IT

SHUTDOWN COMMAND

SEND TO KEYSOARD CONTROL PORT

WAIT FOR 80286 RESET

INSURE HALT

TEST4

5-87

IBM p.,.son.1 COlllput.,. Io4ACRO Ass.lllbl.,.

TESTS - - - -

Version 2.00

061 I 0185 EXCEPTION INTERRUPT TEST HANDLERS

16

,.

15

..

8

9

,. 7

3

5

2

,

.

.

0000

0000

0000

11

18

19

20

21

22

23

2~

25

26

21

28

29

30

31

32

33

3~

000080 90

0002 E9 0082

0005

0005 BO 91

0001 E9 0082

OOOA

OOOA BO 92

OOOC E9 0082

OOOF

OOOF BO 93

R

R

R

DOli E9 0082 R

00 I~

001~ BO 9~

ODIE, E9 0082

0019

R

001906

00 I A 6A 48

OOIC 01

0030

0030 80 96

0032 EB 1E

0034

0034 BO 91

0036 E8 71.

0038

0036 80 96

003A E8 76

003C

003C 80 99

003E E8 12

0040

0040 BO 9A

0042 EB 6E

0044

0044 BO 9B

0046 EB 61.

0046

0048 BO 9C

004A EB 66

004C

004C eo

90

004E EB 62

0050

0050 BO 9E

0052 E8 5E

0054

0054 BO 9F

0056 EB SA

0058

0056 80 1.0

005A EB 56

005C

005C BO A I

005E EB 52

0060

0060 80 A2

0062 EB 4E

0064

0064 BO A3

0066 EB 4A

0068

0068 BO A4

0061. EB 46

006C

OObC BO AS

3'

3.

37

82

63

84

85

86

87

88

89

90

91

1 I

12

13

14

15

16

11

16

19

60

6 I

56

59

60

61

62

63

49

50

51

52

53

54

55

56

57

64

65

66

61

68

69

70

38

39

40

41

42

43

44

~5

~6

~1

~8

0010 2B FF

OOIF 261 C1

002~ as

0000

26: C1 45 02 1FFF

002A 01

0028 BO 95

0020 E9 0082 R

92

93

9~

006E EB 42

0010

0010 eo

A6

0072 EB 3E 95

96

91

0014

0014 eo

AT

98

99

00T6 E8 31.

0018

100 0078 BO 1.8

101 0011. EB 36

, 02 OOTC

103 001C BO 1.9

104 001E E8 32

105 0080

106 0060 BO AA

101 0082 E8 2E

108 0084

109 0084 BO loB

110 0086 EB 21.

1 I 1 0088

! 12 0088 90 AC

I 13 006A EB 26

114 C06C

PUBL..IC POST5

PUBLIC SYSINITI

;

;

---

-----------

-- -

---------------------­

EXCEPT I ON J NTERRUPT ROUT I NE

;

------------

- - -------------- - - - --- ----­

MOV

J"F

NOV

JMF

EXC_IO:

MOV

JMF

MoV

J"P

MOV

JMP

EXC_16:

MoV

J"P

NOV

JMF

NOV

J"P

,-,

06- I 0-85

PAGE 118,121

TITLE TESTS - - - 06110185 EXCEPTION INTERRUPT TEST HANDL..ERS

.286C

.LIST

CODE SEGMENT BYTE PUBL I C

ASSUME CSICODE,DS:ABSO

MaV

JMF

PUSH

PUSH

FOF

AL,90H

TEST_EXC

AL,91H

TEST_EXC

AL,92H

TEST_EXC

AL,94H

TEST_EXC

ES

BYTE PTR ES TEMP

ES

F I X BOUND PARAMETERS

SUB

NOV

NOV

POP

NOV

JMF

NOV

JMF

MOV

JMF

NOV

JMF

MOV

JMF

MOV

JMF

MoV e"P

"OV

JMP

NOV

J"F

MOV

JM?

MoV

JM?

MaV

JMF

MaV

JM?

MOV

JMF

<><> SET CHECKPOINT <><>

GO TEST IF EXCEPTION WAS EXPECTED

<><> SET CHECKPOINT <><>

GO TEST I F EXCEPT I ON WAS EXPECTED

<><> SET CHECKPOINT <><>

GO TEST IF EXCEPTION WAS EXPECTED

<><> SET CHECKPOINT <><>

GO TEST I F EXCEPT I ON WAS EXPECTED

<><> SET CHECKPOINT <><>

GO TEST I F EXCEPT I ON WAS EXPECTED

LOAD ES REG I STER WITH SELECTOR

01,01

WORD PTR ES: [01] ,0

, POINT 8EGINNING OF THE BLOCK

; SET FIRST WORD TO ZERO

WORD PTR ES:[DI+2],01FFFH : SET SECOND TO 01FFFH

ES

AL,95H

TEST_EXC

<><> SET CHECKPOINT <><>

I GO TEST I F EXCEPT I ON WAS EXPECTED

AL,96H

SHORT TEST_DC

AL,91H

SHORT TEST _EXC

AL,98H

SHORT TEST _EXC

AL,99H

SHORT TEST_EXC

AL.9AH

SHORT TEST_EXC

AL,9BH

SHORT TEST_EXC

AL..,9CH

SHORT TEST_EXC

AL,9DH

SHORT TEST_EXC

AL,9EH

SHORT TEST_EXC

AL,9FH

SHORT TEST_EXC

AL,OAOH

SHORT TEST _EXC

AL,OAIH

SHORT TEST_DC

AL, OA2H

SHORT TEST_EXC

AL,OA3H

SHORT TEST _EXC

AL,OA4H

SHORT TEST_EXC

AL,OA5H

SHORT TEST_EXC

AL,OAbH

SHORT TEST_EXC

AL,OA1H

SHORT TEST _EXC

AL,OA8H

SHORT TEST_EXC

AL,OA9H

SHORT TEST_EXC

AL,OAAH

SHORT TEST _EXC

AL,OABH

SHORT TEST_EXC

AL, OACH

SHORT TEST_EXC

<><> SET CHECKPO I NT <><>

GO TEST IF EXCEPTION WAS EXPECTED

<><> SET CHECKPO I NT <><>

GO TEST I F EXCEPT I ON WAS EXPECTED

<><> SET CHECKPOINT <><>

GO TEST IF EXCEPTION WAS EXPECTED

•

<><> SET CHECKPOINT <><>

GO TEST IF EXCEPTION WAS EXPECTED

<><> SET CHECKPOINT <><>

GO TEST IF EXCEPTION WAS EXPECTED

<><> SET CHECKPOINT <><>

GO TEST I F EXCEPT I ON WAS EXPECTED

<><> SET CHECKPOINT <><>

GO TEST IF EXCEPTION WAS EXPECTED

<><> SET CHECKPOINT <><>

GO TEST IF EXCEPTION WAS EXPECTED

<> <> SET CHECKPO I NT <> <>

GO TEST IF EXCEPTION WAS EXPECTED

<><> SET CHECKPOINT <><>

GO TEST I F EXCEPT I ON WAS EXPECTED

<><> SET CHECKPOINT <><>

GO TEST IF EXCEPTION WAS EXPECTED

<><> SET CHECKPOINT <><>

GO TEST IF EXCEPTION WAS EXPECTED

<><> SET CHECKPOINT <><>

GO TEST IF EXCEPTION WAS EXPECTED

<><> SE1 CHECKPOINT <><>

GO TEST IF EXCEPTION WAS EXPECTED

<><> SET CHECKPOINT <><>

GO TEST IF EXCEPTiON WAS EXPECTED

<><> SET CHECKPOINT <><>

GO TEST IF EXCEPTION WAS EXPECTED

<><> SET CHECKPOINT <><>

GO TEST IF EXCEPTiON WAS EXPECTED

<><> SET CHECKPOINT <><>

GO TEST IF EXCEPTION WAS EXPECTED

<><> SE1 CHECKPOINT <><>

GO TEST I F EXCEPT I ON WAS EXPECTED

<><> SET CHECKPOINT <><>

GO TEST J F EXCEPT I ON WAS EXPECTED

<><> SET CHECK PO I NT <><>

GO TEST IF EXCEPTION WAS EXPECTED

<><> SET CHECKPOINT <><>

GO TEST I F EXCEPT I ON WAS EXPECTED

<><> SET CHECKPOINT <><>

GO TEST IF EXCEPTION WAS EXPECTED

5-88 TESTS

115 008C BO AD lib 008EEB22

111 0090

118009080AE

119 0092 E8 IE

120 0094

121 0094 80 AF

122 00ge EB IA

123 0098

124 0098 BO BO

125 009A EB Ie

126 009C

121 009C BO Bl

128 009E

129 OOM

E8 12

130 OOAO 80 82

131 00A2 EB OE

132 00A4

133 00A4 BO B3

134 00A6 EB OA

135 00A8

13b 00A8 BO B4

131 OOAA EB 06

138 OOAC

'39 OOAC BO B5

140 OOAE EB 02

141 OOBO

,.,

0080 BO 86

144

145 00B2

146 00B2 E6 80

141 00B4 3C AF

148 00B6 11 I C

149

150 00B8 IE

151 00B9 6A 08

152 OOBB 1 F

153 OOBC C1 06 0048 FFFF

154 00C2 C6 06 0040 93

155 00C1 6A 48

156 00C9 01

151 OOCA IF.

158 OOCB 5A

159 OOCC 59

160 OOCO 51

161 OOCE 83 F9 40

162 0001 15 01 I.'

164 0003 52

165 0004

166 0004 86 EO

167 0006 E4 8B

168 0008 3A C4

169 OOOA 74 OE

170 OOOC

171 OOOC E4 80

172 OOOE 3C 3B

173 OOEO 12 01

114 00E2

115

176 00E3

CF

177 00E3 86 EO

178 00E5 E6 80

119 00E7 F4

160 00E8 E8 F9

181

162 OOEA

183 OOEA 2A CO

184 OOEC E6 8B

185 OOEE 880100

,.,

OOF I CF'

I • •

189

190

191

192

19'

194 00F2

195 00F2 FA

196 00F3 55

197 00F4 BO 81

198 00F6 E6 80

199 00F8 E8 0149 R

200 00F8 8B EF

20 I

202

20'

204 OOFO B8 0800

205 0 I 00 AS

206 010 I B8 DOAD

207 0104 AB

208 0 I 05 B8 0000

209 0108 AS

210

211 010926

212

213 010A OF

214 OIOB

215 010B 8B 5E 00

216 010E

217 OIOB

218 010B 01

219 OIOE

220 010E 8B FO

221

222

22'

224 0110 BF 08AO

225 0113 E8 0140 R

226 0 I 16 8B EF

227 0 I 18 B8 0088

228 011B AB

IBM Personal Computer MACRO Assembler Version 2.00

TESTS - - - 06/10/85 EXCEPTION INTERRUPT TEST HANDLERS

'-2

06-10-85

Exe

30 :

"0'

J"P

"0'

J"P

Exe 31 :

"OV

J"P

"0'

J"P

"0'

J"P srs 341

SYS 35:

"0'

""P

"OV

J"P

"0'

""P

"0'

J"P

"0'

AL.OADH

SHORT TEST_EXC

AL,OAEH

SHORT TEST_EXC

AL,OAFH

SHORT TEST_EXC

AL,OBOH

SHORT TEST_EXC

AL,081H

SHoRT TEST_EXC

AL,OB2H

SHORT TEST_EXC

AL,OB3H

SHORT TEST_EXC

AL,OB4H

SHORT TES T _ EXC

AL.OB5H

SHORT TEST_EXC

AL,OB6H

<><> SET CHECKPOINT <><>

GO TEST IF EXCEPTION WAS EXPECTED

<><> SET CHECKPO I NT <><>

GO TEST IF EXCEPTION WAS EXPECTED

<> <> SET CHECK PO 1 NT <><>

GO TEST IF EXCEPTION WAS EXPECTED

<><> SET CHECKPOINT <><>

GO TEST I F I NTERRUPT WAS EXPECTED

<><> SET CHECKPOINT <><>

GO TEST IF INTERRUPT JAS EXPECTED

<><> SET CHECK PO I NT <><>

GO TEST IF [NTERRUPT WAS EXPECTED

<><> SET CHECKPOINT <><>

GO TEST I F I NTERRUPT WAS EXPECTEO

<><> SET CHECKPO I NT <><>

GO TEST IF INTERRUPT WAS EXPECTEO

<><> SET CHECKPOINT <><>

GO TEST [F [NTERRUPT WAS EXPECTEO

<><> SET CHECKPOINT <><>

GO TEST I F I NTERRUPT WAS EXPECTED

TEST EXC:

OUT e"p

JA

PUSH

PUSH

POP

MOV

MOV

PUSH

POP

POP

POP

POP

PUSH

CMP

,JNZ

MFG PORT .AL

AL.OAFH

TEST _EXCO

OUTPUT THE CHECKPO I NT

CHECK FOR EXCEPT! ON

GO IF A SYSTEM INTERRUPT

OS

BYTE PTR GOT PTR

OS

SAVE THE CURRENT DATA SEGMENT

DS:ES TEMP.SEG LIMIT,MAX SEG LEN

8YTE PTR os:

(ES TEMP.OATA Ace RIGHTS) ,CPLO DATA ACCESS

8YTE PTR ES TEMP - ­

ES

OS

OX

CX

CX

CX.SYS ROM CS

TEST_ EXCO -

RESTORE REGI STERS

CHECK IF CODE SEGMENT SECOND ON STACK

CONT I NUE I F ERROR CODE

PUSH

TEST EXCO;

XCHG

IN eMP ox

AH,AL

AL,DMA PAGE+OAH

AL,AH -

JZ TEST _EXC3

TEST EXC I: - 'N

AL,MFG PORT e"p

AL,03BH

J8 TEST _EXC2

IRET

; PUT SEGMENT BACK ON STACK

SAVE THE CHECKPOINT

WAS THE EXCEPT I ON EXPECTED?

GO IF YES

CHECK THE CURRENT CHECKPO I NT

HALT IF CHECKPOINT BELOW 38H

TEST EXC2:

XCHG

OUT

HL T

J"P

AH,AL

MFG_PORT ,AL

TEST_EXC2

OUTPUT THE CURRENT CHECKPO I NT

<><> CHECKPOINT 90 THRU B5 <><>

INSURE SYSTEM HALT

TEST EXC3:

SUB

OUT

"0'

IRET

AL,AL

OMA PAGE+OAH,AL

AX,OIOOH

CLEAR DMA PAGE

FOR BOUND I NSTRUCT I ON EXPECTED I I NT 5 ~

RETURN

;

;

- -- -----

---

- - -- --- - -- -- - - - -- -

- -

---------

- - -

-

---

------

-

----­

THI S BU I LOS THE OESCR I PTOR TABLES REQU I RED FOR PROTECTED MODE

PROCESSOR MUST BE I N REAL MODE j - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ­

ASSUME CS: CODE, OS: NOTH I NG, ES: NOTH I NG. SS ; NOTH I NG

SYSINIT! eLi

PUSH

"0'

OUT

CALL

"OV

PROC NEAR

8P

AL,6IH

MFG PORT ,AL

S lDT BLO

8P,oT

NO I NTERRUPTS ALLOWED

SAVE BP

<> <><> <> <><><><><><><><>

<><> CHECKPOINT 81 <><>

SAVE THE POINTER TO ,JUST PAST THE IDT

AS 'll'E HAVE NO SOA, USE THE S I X BYTES

HERE TO LOAD THE 10TR. WE WILL SlOT

WHEN WE GET TO SOA INITIALIZATION.

SEGMENT LIM IT

=

LENGTH OF lOT

STORE THAT AS JOT LIMIT lOT ADDRESS

ANO ACCESS RIGHTS BYTE [UNDEF I NED)

"0'

STOSW

"0'

STOSW

"0'

STOSW

SEGOV

08

LlOT

08

7? 000 I LABEL

"0'

110002 LA8~L

ORG

08

ORG

"OV

AX,SYS lOT_LEN

AX,SYS_IDT_LOC

AX,O

ES

026H

[BP]

OOFH

BYTE

BX,WORD PTR lBP]

BYTE

OFFSET CS: 110001

OOIH

OFFSET CS:? ?OOOZ

DJ,BP

BUILD THE GOT.

LOAD THE lOT

REGI STER FROM THI S AREA

ES:OI NOW --> END OF lOT AGAIN

MOV

CALL

MOV

MOV

STOSW

Ol,GDTlOC

GOT Bli)

BF,DI

AX,GDT_LEN

SAVE THE ES:OI POINTER

AX

=

LENGTH OF THE GOT

PUT THAT IN THE LIMIT FIELD

TESTS

5-89

IBM Personal Computer MACRO Assembler Version 2.00

TEST5 ---06/10/85 EXCEPT ION INTERRUPT TEST HANDLERS

1-3

06-10-85

22. OIIC 88 o8AO

230 OIIF AB

231 0120 B8 0000

232 0123 AB

233

23' 012-4 26

235

23. 0125 OF

237 0126

238 0126 88 56 00

23' 0129

2.0 0126

2" 0126 01

2.2 0129

2.3 0129 88 Fo

2 • •

2'5 o

12B AB

012C AB

2'.

2'7

0120 88 Fo

2"

2 ••

250 012F 50

251 0130 BS 0001

252

"3

0133 OF 01 FO

25'

255 0136 EA

25. 0137 013B R

257 0139 00-40

258 0138

25' 0138 BO 85

2., 0130 E6 80

013F C3

2.2

2.3 0140

2.'

2.5

2 • • 0140

2.7 0140 BE OlAF R

2 • • 0143 B9 0044

2.'

0146 F3/ AS

270 0148 C3

271 0149

272

273

STOSW

SEGOV

DB

LGOT

DB n0004 LABEL

MOV

710005 LABEL

ORe

DB

ORe

MOV

STOSW

STOSW

MOV

DONE:

SYSINITI

MOV

STQSW

MOV

POP

MOV

LMSW

DB

08

OW ow

MOV

OUT

RET

GOT SLo PROC

MOV

MOV

REP

RET

GoT_BL.D ENDP

AX ,GOT _LOC

AX,O

ES

026H

[BP]

OOFH

BYTE

QX,WORo PTR [8P)

BYTE

OFFSET CSt 770004

OOIH

OFFSET CS:??0005 ol,BP

OI,SP

SWITCH TO VIRTUAL MODE

BP

AX, V I RTUAL ENA8LE

AX -

OOFH, 00 I H. OFOH

OEAH

OFFSET ~ONE

SYS_ROM_CS

AL ,85H

MFG_PORT ,AL

ENDP

AX = LOW WORD OF GOT ADDRESS

PUT THAT IN BASE FIELD LOW

AX

=

HIGH BYTE OF ADDRESS, AND

ACCESS RIGHTS BYTE IS UNDEF I NED

LOAD THE GOTR

FROM TH IS AREA

; RESTORE THE ES:DI POINTER

RESTORE BP

MACHINE STATUS WORD NEEDED TO

SWITCH TO VIRTUAL MODE

.JUMP FAR TO PURGE PRE-FETCH QUEUE

TO OFFSET

IN SEGMENT

<><><><><><> <> <><><><><>

<><> CHECK PO I NT 82 <> <>

SYSTEM INITIALIZATION

NEAR

SI,OFFSET GOT DATA START ; OS:SI --> GOT

CX, (OFFSET GOT DATA END-OFFSET GOT DATA STARn /2 ; WORD COUNT

MOVSW - ; COpy GOT I NTO MEMORY

27' 0149

275

27.

277

278 0149 BE 0237 R

27. 014C 8C CB

280 0,4E BE 08

281 0150 BF oOAO

282 0153 2B CO

2.,

0155 8E CO

015T BB 0040

2.5 015A B& 81

2 •• OISC B2 00

287 OISE B9 0020

28e 0161

2"

2'2 0162 8B C3

2.3 0164 AB

2"

0165 88 C2

2.5 0'67 A8

2" 0168 B8 0000

2.7 016B AB

; - - - - -

PROC

BUILD THE lOT. THE lOT WILL CONTAIN VECTORS FOR EXCEPTION HANDLERS

MOV

MOV

MOV

MOV

STOSW

MOV

STOSW

MOV

STOSW

LOOP

MOV

MOV

ES,AX

~~:i~!pRg~T~S

OL,O -

NEAR

!~ :g~FSET

SYS_IDT_OFFSET; ;

DS.AX

DI,SYS lOT LOC

AX,AX -

~~~~R~G~i

I

E~~~~TP~~NTS

28.

2'0 0161 A5

2" o 16C E2 F3

2"

016E B9 OOEO

300 0111 80 0217 R

301

SUB

MOV

MOV

MOV

MOV

LOW_lOT:

MOV

MOVSW

MOV

CX,32

AX,8X

AX.DX

AX,O

LOW lOT

CX,256-32

8P,OFFSET FREE INTS

WHERE THE lOT WILL BE.

CS IS n £ SAME FOR ALL INTERRUPTS

ACCESS RIGHTS BYTE FOR THE GATE

THE WORD COUNT FIELD I S UNUSED

THERE ARE 32 RESERVED INTERRUPTS

THIS LOOP BUILDS 32 DESCRIPTORS IN THE lOT FOR THE RESERVED INTERRUPTS

GET A ROUTINE ENTRY POINT

AND PUT IT IN THE OFFSET FIELD

GET THE SYSTEM CODE SEGMENT SELECTOR

AND PUT I TIN THE SELECTOR FIELD

GET THE I NTERRLlPT GATE BYTE

Alii) PUT IN THE ACCESS RIGHTS FIELD zERO OUT

THE RESERVED POS 1 T IONS

AND REPEAT AS 01 REeTED

256 TOTAL 32 DOt-E ::: WHATEVER I S LEFT

THERE IS A COPY OF AN UN-INITIALIZED

INTERRUPT OESCR 1 PTOR AT FREE_' NTS

302 0174

303 0174 88 F5

30'

305 0176 A5

300 0111 A5

307 0118 A5

30e 01 T9 A8

30' OllA E2 F8

310

311

HIGH_lOT:

MOV

MOVSW

MQVSW

MOVSW

STOSW

LOOP

SI,BP

HIGH_lOT

OS:SI

-->

FREE DESCRIPTOR

(ES:OI LEFT OFF AT INT 32)

MOVE OFFSET OF THE I RET I NSTRUCT I ON

MOVE THE CS SELECTOR

MOVE THE ACCESS RIGHTS BYTE

ZERO OUT THE RESERVED WORD

FILL THE REMA I NOER OF THE TABLE

INITIALIZE THE ENTRY POINTS FOR POST TEST

312

313 017C 26 C7 06 olAO 0098 R

31. 018326 C7 0& DIA8 009C R

MOV

315 018A 26 Cl 06 0180 OOAO R

31. 0191 26 Cl 060188 00A4 R

317 0198 26 C'1 06 OICO OOA8 R

318 019F 26 C7 06 DIC8 OOAC R

31. 0lA6 26 C7 06 DIDO OOBO R

320 OIAo C3

321

322 OIAE

323 OIAE CF

MOV

MOV

MOV

MOV

MOV

MOV

RET

[RET ADDR

IRET

LABEL WORD : FOR UN- I NIT I AL I ZED INTERRUPTS

; NULL RETURN

S-90 TESTS

IBM Personal Comput.er MACRO Assembler Version 2.00

TEST5 - - - 06/10/85 EXCEPTION INTERRUPT TEST HANDLERS

324

325

32.

327

328

329

=

OlAF

330

331

332

333 OlAF DDOD

334 D 181 0000

335 0183 00

336 0184 00

337 0185 0000

338

339

340

341 0lB7 0088

342 0189 D8AD

343 0188 00

344 DISC 93

345 OIBO 0000

34.

347

348

349 OIBF 0800

350 OICI DOAD

351 01 C3 00

352 01 C4 93

353 OlC5 0000

354

355

356

357 OlC7 0300

358 01C9 0400

359 Of CB 00

360 01 CC 93

361 OICO 0000

362

363

364

365 OleF 1000

366 01DI 0000

367 0103 DB

368 0104 93

369 0105 DODO

370

371

372

373 0107 4000

374 0109 8000

375 0108 08

376 o

I DC 93

377 0100 0000

378

379

380

381 OIOF FFFF

382 o lEI 0000

383 01£3 OA

384 01 E4 93

385 01E5 0000

38.

387

388

389 01E1 FFFF

390 01E9 0000

391 01E8 08

392 01 EC 93

393 DIED 0000

394

395

39.

397 OIEF FFFF

398 OIF] 0000

399 01 F3 OF

400 01 F4 98

401 01F5 0000

402

403

404

405 OlF7 FFFF

406 01F9 DODO

407 o

IFS 00

408 01 Fe 93

409 01FD 0000

410

411

412

4>3 01 FF FFFF

414 020! 0000

415 0203 00

4: 6 0204 93

417 0205 0000

418

419

420

421 0207 FFFF

422 0209 0000

423 0208 00

424 020C 93

425 0200 0000

42.

427

428

429 OZOF FFFF

430 021 I 0000

431 0213 00

432 0214 93

433 0215 0000

1-4

06-10-85

PAGE

THE FOLLOWING DATA DEFINES THE PRE-INITIALIZED GOT FOR POST TESTS.

THESE MUST BE INITIALIZED IN THE ORDER IN WHICH THEY APPEAR IN THE

GDT_DEF STRUCTURE DEFINITION AS IT [S IN "SYSDATA.INC".

GOT _DATA_START EQU

; - - - - -

FIRST ENTRY UNUSABLE

DW

DW

DB

DB

DW

THE GOT ITSELF

DW

DW

DB

DB

DW

GOT LEN

GOT-LaC a

(GOT PTR)

CPLO DATA ACCESS a -

(UNUSED_ENTRY)

SEGMENT LIMIT

SEGMENT BASE ADDRESS LOW WORD

SEGMENT BASE ADDRESS HIGH BYTE

ACCESS RIGHTS BYTE

RESERVED MUST BE ZERO

SEGMENT I I MI T

SEGMENT BASE ADDRESS lOW WORD

SEGMENT BASE ADDRESS HIGH BYTE

ACCESS RIGHTS BYTE

RESERVED MUST BE ZERO

~SYS_IDT_PTRI THE SYSTEM lOT DESCRIPTOR

DW

DW

DB

DB

DW

SYS [DT LEN

SYS-IDT-LOC o -

CPlO DATA ACCESS o -

SEGMENT lIMIT

• SEGMENT BASE ADDRESS lOW WORD

, SEOMENT BASE ADDRESS HIGH BYTE

; ACCESS RIGHTS BYTE

; RESERVED MUST BE ZERO

THE SYSTEM DATA AREA DESCRIPTOR lRSOA_PTRI

DW

DW

DB

DB

DW

SDA LEN

SDA-LOC o -

CPLO DATA ACCESS o -

SEGMENT LIM I T

SEGMENT BASE ADDRESS LOW WORD

SEOMENT BASE ADDRESS HIGH BYTE

ACCESS RIGHTS BYTE

RESERVED MUST BE ZERO

CaMPA T I BlE MONOCHROME 0 I SPlA Y REGEN BUFFER

DW

DW

DB

DB

DW

MCRT SIZE

MCRT. LD

MCRT"'-H I

CPLO DATA ACCESS a -

SEGMENT LIMIT

SEGMENT BASE ADDRESS LOW WORD

SEGMENT BASE ADDRESS HIGH BYTE

ACCESS RIGHTS BYTE

RESERVED MUST BE ZERO

; - - - - -

COMPATIBLE COLOR DISPLAY REGEN BUFFER IC_CCRT_PTRI

DW

DW

DB

DB

DW

CCRT SIZE

CCRTi" La

CCRTtJI-HI o -

SEOMENT LIMIT

SEOMENT BASE ADDRESS lOW WORD

SEOMENT BASE ADDRESS HIGH BYTE

ACCESS RIGHTS BYTE

RESERVEO MUST BE ZERO

ENHANCED GRAPHIC ADAPTER REGEN BUFFER IE_CCRT_PRTI

DW

DW

DB

DB

DW

ECCRT SIZE

ECCRTiii LO LO

ECCRTrp-LO-H I

CPLO DATA-ACCESS o -

SEGMENT LIMIT

SEGMENT BASE ADDRESS LOW WORD

SEGMENT BASE ADDRESS HIGH BYTE

ACCESS RIGHTS BYTE

RESERVED MUST BE ZERO

SECOND PART OF EGA IE CCRT_PTRZ)

; - - - - -

DW

DW

DB

DB

DW

ECCRT SIZE

ECCRTiii HI LO

ECCRT(!I-HI-HI

CPLO DATA-ACCESS o -

SEGMENT liMIT

SEGMENT BASE ADDRESS LOW WORD

SEGMENT BASE ADDRESS HIGH BYTE

ACCESS RIGHTS BYTE

RESERVED MUST BE ZERO

CODE SEGMENT FOR POST CODE, SYSTEM lOT

DW

DW

DB

DB

DW

MAX SEG LEN

CSEGtJI LD

CSEGtJI-H I

CPLO CODE ACCESS o -

SEGMENT LIMIT

SEGMENT BASE ADDRESS lOW WORD

SEGMENT BA SE ADDRESS HIGH BYTE

ACCESS RIGHTS BYTE

RESERVED MUST BE ZERO

TEMPORARY DESCRIPTOR FOR ES (ES_TEMPI

DW

DW

DB

DB

DW

MAX SEG LEN

NSEGrp LO

NSEGtJI-H I

CPlO DATA ACCESS o -

SEGMENT L I foil I T

SEGMENT BASE ADDRESS LOW WORD

SEGMENT SASE ADDRESS

ACCESS RIGHTS BYTE

RESERVED MUST BE ZERO

HIGH BYTE

TEMPORARY DESCRIPTOR FOR CS AS A DATA SEGMENT ICS_TEMPI

DW

DW

DB

DB

DW

MAX SEG LEN

NSEG'" LD

NSEG(!I-H I

CPLO DA T A ACCESS o -

SEGMENT LIMIT

SEGMENT BASE ADDRESS LOW WORD

SEOMENT BASE ADDRESS HIGH BYTE

ACCESS R I CHTS BYTE

RESERVED MUST BE ZERO

TEMPORARY DESCR I PTOR FOR

DW

DW

DB

DB

DW

MAX SEG LEN

NSEGtJI L<5

NSEGtJI-H[ a -

TEMPORARY DESCRIPTOR FOR OS

DW

DW

DB

DB

DW

MAX SEO LEN

NSEG(!I LD

NSEGtJI-H I

(55_TEMPI

SEGMENT LIMIT

SEGMENT BASE ADDRESS LOW WORD

SEGMENT BASE ADDRESS HIGH BYTE

ACCESS RIGHTS BYTE

RESERVED MUST SE ZERO

(OS_TEMPI

SEGMENT LIMIT

SEGMENT SASE ADDRESS LOW WORD

SEGMENT BASE ADDRESS HIGH BYTE

ACCESS RIGHTS BYTE

RESERVED MUST BE ZERO

TESTS 5-91

IBM Per-sonal Compute ... MACRO Assemble... Ver-slon 2.00

TEST5 ---06/10/85 EXCEPTION INTERRUPT TEST HANDLERS

434

435

436 0217

431 0217 0800

43. 0219 COOO

439 021B 00

44' 021C 81

44. 0210 0000

44'

443

444

44. 021F 0800

446 0221 0217 R

447 0223 00

44. 0224 93

449 0225 0000

45.

45.

45' 0227

4.3 0227 0085

4.4 0229 0000

45. 022B 00

" 6 022C E2

457 0220 0000

458

459

460

461 022F 0088

46' 0231 0227 R

463 0233 00

464 0234 93

46' 0235 0000

466

467

=

0237

468

46'

470

471

472

473

474 0237

475

476 0231 0000 R

477 0239 0005 R

478 0238 000.1. R

47. 0230 OOOF R

4.0 023F 00 14 R

4 •• 0241 0019 R

4.2 0243 0030 R

483 0245 0034 R

484 0247 0038 R

4.5 0249 003C R

4" 024B 0040 R

487 0240 0044 R

488 024F 0048 R

48. 0251 004C R

4'0 0253 0050 R

4.' 0255 0054 R

4" 0257 0055 R

493 0259 005C R

494 0258 0060 R

495 0250 0064 R

49' 025F 0065 R

4.7 0261 006C R

4 • • 0263 0010 R

4 • • 0265 0074 R

.00 0261 0018 R

501 0269 001C R

'02 026B 0050 R

.03

0260 0084 R

504 026F 0088 R

505 0211 OOSC R

50. 0273 Q090 R

507 0215 0094 R

50.

50.

517

510

.Il

0217 alAE R ."

0219 0040

513 0218 00 66

...

0210

516 0210

PAGE f~=~~~;

IPOST_TRJ

OW ow

DB

DB ow

OOBOOH

OCOOOH o

FREE TSS o -

Ow

Ow

DB

DB ow

00800H

TR LOC o o -

1----{POST LDTRI

LOT LOCI

OW

­

GOT LEN

Ow

DB

OOODOH o

DB ow

LOT DESC o -

• -5

06-10-55

SEGMENT LIMIT

SEGMENT BASE ADDRESS LOW WORD

SEGMENT BASE ADDRESS HIGH BYTE

ACCESS RIGHTS BYTE

RESERVED MUST BE ZERO

SEGMENT LIMIT

SEGMENT BASE ADDRESS LOW WORD

SEGMENT BASE ADDRESS HIGH BYTE

ACCESS RIGHTS BYTE

RESERVED MUST BE ZERO

SEGMENT LIMIT

SEGMENT BASE ADDRESS LOW WORD

SEGMENT BASE ADDRESS HIGH BYTE

ACCESS RIGHTS BYTE

RESERVED MUST BE ZERO ow

OW

DB

DB ow

GOT_DATA_END

GOT LEN

LOT-LOC o ­ o -

EQU

END OF PRE-ALLOCATED GOT

SEGMENT LIMIT

SEGMENT BASE ADDRESS LOW WORD

SEGMENT BASE ADDRESS HIGH BYTE

ACCESS RIGHTS BYTE

RESERVED MUST BE ZERO

; - - - - ENTRY POINTS FOR THE FIRST 32 SYSTEM INTERRUPTS

WORD SYS_I DT _OFFSETS

Ow ow

Ow ow

OW

Ow

Ow

Ow

Ow

Ow

Ow

Ow oW

OW

OW

OW

OW

Ow

Ow ow

Ow

Ow

Ow

OW

OW

OW

OW ow ow ow ow

Ow

LABEL

OFFSET EXC 00

OFFSET EXC-O I

OFFSET EXC-02

OFFSET EXC-03

OFFSET EXC-04

OFFSET EXC-05

OFFSET EXC-06

OFFSET EXC-01

OFFSET EXC-08

OFFSET EXC-09

OFFSET EXC-'O

OFFSET EXC-l I

OFFSET EXC-12

OFFSET EXC-13

OFFSET EXC-14

OFFSET EXC-15

OFFSET EXC-'6

OFFSET EXC-' 1

OFFSET EXC-'8

OFFSET EXC-'9

OFFSET EXC-20

OFFSET EXC-21

OFFSET EXC-Z2

OFFSET EXC-23

OFFSET EXC-24

OFFSET EXC-25

OFFSET EXC-26

OFFSET EXC-21

OFfSET EXC-28

OFFSET EXC-29

OFFSET EXC-30

OFFSET EXC:) 1

INTERRUPTS AS DEFINED

EXCPT 00 DIVIDE ERROR

EXCPT 0' SINGLE STEP

EXCPT 02 NMI, SYSTEM REQUEST FOR 01

EXCPT 03 BREAKPO I NT

EXCPT 04 INTO DETECT

EXCPT 05 BOUND

EXCPT 06 INVALID OPCODE

EXCPT 01 PROCESSOR EXT NOT AVAIL

EXCPT 08 DOUBLE EXCEPT I ON

EXCPT 09 PROCESSOR EXT SEGMENT ERR

EXCPT 10 TSS BAD IN GATE TRANSFER

EXCPT I ' SEGMENT NOT PRESENT

EXCPT , 2 STACK SEGMENT NOT PRESENT

EXCPT 13 GENERAL PROTECT I ON

EXCPT 16 PROCESSOR EX-.e:NS I ON ERROR

; - - - - FORMAT INTERRUPT DESCRIPTORS IGATES) 32 255

SIOT_BLD ow ow

DB

ENOP

OFFSET I RET ADDR

SYS ROM CS -

O.INT_GATE

DESTINATION OFFSET

• DEST I NAT! ON SEGMENT

; UNUSED AND ACCESS RIGHTS BYTE

CODE ENOS

END

5-92

TESTS

12

13

14

15

16

11

10

II

9

. 0000

103

104

105

106

107

108

109

110

I I I

112

113

114

91

92

93

94

95

96

97

98

99

100

101

102

81

82

83

84

85

86

87

88

89

90

72

73

74

75

76

77

78

79

80

63

64

65

66

67

68

69

10

71

56

57

58

59

60

61

62

49

50

51

52

53

54

55

43

44

45

46

47

48

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

0000

0000

0000

0002

0004

0006

0008

OOOA

OOOC

OOOE

00 I I

0013

00 15

0016

0016

0018

OOIA

001C

00 IE

33

89

28

2B

F9

01

89

88

33

EI

02

0010

FF

F6

02

15

05

C2

F6

0020

0022

0025

0027

002A

002C

002E

0030

0032

0034

0036

0038

003A

003C

003E

0040

0042

0044

0047

8B

E4

OC

E6

24

E6

75

BA

89

88

88

33

75

89

88

86

8B

33

75

E4

86

E4

22

B8

75

09

61

OC

61

F3

61

66

FFOO

05

75 01

05

C2

58

05

35

F2

05

C2

4C

61

C4

81

EO

0000

3F

0049 8A

004C

004C

004E

0050

0052

0054

0056

0058

005A

28

2B

88

AA55

FF

F6

CB

88

F3/

C2

AB

8B

2B

CB

F6

005A

0058

0050

AD

33

EI

C2

FB

005F

0061

0063

0065

0061

75

E4

86

E4

22

21

61

C4

87

EO

IBM Persona I Computer MACRO Assemb I er Vera j on 2.00

TEST6 - - - 06/10/85 POST TESTS AND SYSTEM BOOT STRAP

I-I

06-10-85

PAGE! \8.121

TITLE TEST6 - - - -

.286C

. l \ ST

CODE

061 to/85

SEGMENT BYTE PUBl [C

POST TESTS AND SYSTEM BOOT STRAP

PUBl I C BOOT STRAP 1

PU8l I C POST6

PUBLIC STGTST CNT

PUBl 1C ROM ERR

PUBLIC XMIT_8042

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

CMOS READ: NEAR

DDStNEAR

DISK BASE:NEAR

E6021NEAR

ERR BEEP: NEAR

E MSG:NEAR

F3A: NEAR

PRT_SEG:NEAR

ASSUME CS:CODE,DS:DATA

;

POSH

;

- - - - - - -

PROe NEAR -

-

-

---------

- - - - - - - - -

------

- - - - - - - - - - - -

--

------ - - - - - - - -­

I THIS SUBROUTINE pERFORMS A READ/WRlTE STORAGE TEST ON A BLOCK

OF STORAGE.

ENTRY REQU I REMENTS;

ES = ADDRESS OF STORAGE SEGMENT BEING TESTED

OS ::; ADDRESS OF STORAGE SEGMENT BEING TESTED

CX '" WORD COUNT OF STORAGE BLOCK TO BE TESTED

EX I T PARAMETERS:

ZERO FLAG

= a

IF STORAGE ERROR IDATA COMPARE OR PARITY

CHECK I. Al=O DENOTES A PAR I TY CHECK. ELSE AL=XOR' ED

BIT PATTERN OF THE EXPECTED DATA PATTERN VS THE ACTUAL

DATA READ.

AX.BX.CX,DX,D], AND S I ARE All DESTROYED.

~~~~~~-~~~-- - -;~~~ ----~~~~--

MOV

]N

OR

OUT

AND

OUT

BX,CX

AL,PORT 8

AL ,RAM PAR OFF

PORT

8-;--

Al -

AL.RAM PAR ON

PORT_S-;-Al ­

SAVE WORD COUNT OF BLOCK TO TEST

TOGGLE PARITY CHECK LATCHES

TO RESET ANY PEND 1NG ERROR

1----ROll A BIT THROUGH THE FIRST WORD

Cl :

C3:

C6:

XOR

MDV

SUB

SUB

STC

RCl

MOV

MOV

XOR

LOOPZ

OX.OX

CX,16

01,01

S I, S I

DX,I

[01

J

,OX

AX, CD]

1

AX,OX

CI

CLEAR THE INITIAL DATA PATTERN

ROll 16 81T POSiTiONS

START AT BEGINNING OF BLOCK

INITIALIZE DESTINATION POINTER

SET CARRY FLAG ON FOR F]RST BIT

MOVE BIT OVER LEFT TO NEXT POSITION

STORE DATA PATTERN

GET THE DATA WRITTEN

I NSURE DATA AS EXPECTED (CLEAR CARRY)

LOOP TILL DONE OR ERROR

JNZ EX IT I F ERROR

CHECK CAS LINES FOR HIGH BYTE lOW BYTE

MOV

MOV

MOV

MOV

XOR

JNZ

MDV

MOV

XCHG

MOV

XOR

JNZ

DX,OFFOOH

[DII,AX

[OI+1],DH

AX, [01

J

AX.DX

CI3

[01

J

,AX

(DI1,DH

DH,Dl

AX, [01]

AX,DX

CI3

TEST DATA -

ERROR EX I T I F NOT ZERO

STORE DATA PATTERN OF OOOOH

WRITE A BYTE OF FFH AT EVEN LOCATION

; SET DX= OOOFFH AND BUS SETTLE

; GET THE DATA

; CHECK THE FIRST WRITTEN

1 EXIT IF NOT

AX= OOOOH

STORE DATA PATTERN '" OOOOH

WRITE A BYTE OF FFH A.T ODD LOCATION

GET THE DATA SHOULD BE OFFOOH

CHECK THE FIRST WRITTEN

CHECK FOR I /0 OR BASE MEMORY ERROR

IN

XCHG

IN

AND

Al,PORT B

Al,AH -

AL,DMA PAGE+6

AH, Al -

CHECK FOR ] /0 PAR I TY CHECK

SAVE ERROR

CHECK FOR R / W OR I /0 ERROR

MASK FOR ERROR EXPECTED

PARITY ERROR EXIT

MDV

JNZ

MOV

AX,O

C 13 oX.OAA55H

RESTORE AX TO 0000

EXIT IF PARITY ERROR

WRITE THE INIT]Al DATA PATTERN

SUB

SUB

MOV

MOV

REP

MOV

SUB lODSW

XOR lOOPZ

DJ .0]

S I. S I

CX,BX

AX ,OX

STOSW

CX,BX

S I. S]

AX,DX

C6

START AT BEG]NN]NG OF BLOCK

INITIALIZE DEST]NAT]ON POINTER

SETUP BYTE COUNT FOR LOOP

GET THE PATTERN

STORE 64K BYTES !

32K WORDS)

SET COUNT

START AT BEG]NN]NG

GET THE FIRST WR]TTEN

INSURE DATA AS EXPECTED

LOOP T i l l DONE OR ERROR

CI3

CHECK FOR I/O OR BASE MEMORY ERROR

EXIT IF NOT EXPECTED (ERROR 8llS ONI

IN

XCHG

IN

AND

AL,PORT B

AL, AH -

AL,DMA PAGE+o

AH, AL ­

CHECK FOR 1 la-PAR J TY CHECK

SAVE ERROR

CHECK FOR R/W OR ] /0 ERROR

TEST6

5-93

IBM Pe,-sonal Computer MACRO A,sembler VerSion 2.00

TEST6 - - - 06/10/85 POST TESTS AND SYSTEM BOOT STRAP

".

111 0069 B6 0000

116 006C151A

'"

121

122 006E 23 02

123 0010 14 16

\ 18 00B9 22 EO

,.,

182 OOBB BO 32

'83 OOBO E6 80

164 OOBF B8 0000

185 00C2 75 C4

16.

167

166 t 89 OOC4 48

\ 90 00C5 2B FF

191 OOCl 8B CB

192 00C9 83 E9 02

193 OOCC AB

194 OOCO 40

195 OOCE F31 AS

196 0000 48

191 0001 AS

! 98 0002 2B F6

199 0004 8B CB

200 0006 83 E9 02

201 0009 AD

202 OOOA 35 FFFF

203 0000 75 A9

204 OOOF

20S OOOF AD

206 OOEO OB CO

20"/ 00E2 EI FB

208 00E4 15 A2

209 00E6 AD

210 00E7 35 FFFF

211 OOEA "/5 9C

212

213

21.

215 OOEC 2B FF

216 OOEE AB

217 OOEF BF FFFE

218 00F2 AB

21.

22a

221

222 OOF3 E4 61

223 00F5 86 C4

224 oaF1 E4 81

225 00F9 22 EO

226 OOFB B8 0000

227 OOFE EB 88

228 0100

12'

12S

12.

127 oon

81 FA 55AA

128 0076 74 OB

129 007881 FA 0101

130 007C 74 OB

131 007E BA 55AA

132 0081 EB C9

133

13.

13.

136 0063 BA 0101

131 0086 EB C4

13.

13.

140 0066

141 0066 C3

"2

I.,

145 0089 2B FF

146 006B 8B CB

147 0060 01 E9

148 008F B6 AAAA

149 0092 BE 5555

150 0095

151 0095 96

152 0096 AB

153 009"/ 96 t 54 0096 AB

\ 55 0099 E2 FA

15.

15"/ 009B 28 F6

156 0090 88 CB

159 009F D I E9

160 OOA I BF 5555

161 OOM BA AAAA

162 OOAl

163 OOAl AD

164 00A8 33 C1

165 OOAA 15 DC

I • •

161 OOAC AD

168 OOAD 33 C2

169 OOAF E 1 F6 lla

111 OOBI 15 05

172

113

174

115 00B3 E4 61

116 00B5 86 C4 t 11 OOBl E4 87

, - - - - -

1-----

, - - - - -

; - - - - -

C9,

; - - - - -

C13:

; - - - - -

CIO=

CII =

C12:

; - - - - -

; - - - - -

CI2A:

J - - - - -

PARITY ERROR EXIT

MOV

JNZ

AND

JZ

CNP

JZ

CMP

JZ

"OV

JMP

NOV

JNP

RET

SUB

MDV

5HR

NOV

NOV

XCHG

STOSW

XCHG

STOS.

LOOP

SUB

NOV

SHR

NOV

NOV

LOOSW

XOR

JNZ

LODS.

XDR

LOOPZ

JNZ

OX,OSSAAH

C.

OX,OIOIH

CIO

OX,055AAH

C3

INSURE PARITY BITS ARE NOT STUCK ON

EX I T STORAGE TEST

CHECKER BOARD TEST

51,51

CX,8X

CX, I

DI,Ol01010101010101B

OX, 1 0 I 0 I 0 I 0' -0 1 a

I 0 1 OB

AX

01.01 cx.ex

CX,2

CLEAR WORD 0 AND FFFE

AL.FORT

AL,AH -

8

AL,OMA PAGE+6

AH.AL ­

AX,O

CI3

ENDP

POINT TO START OF BLOCK

GET THE BLOCK COUNT

DIVIDE BY 2

CHECK CORRECT

CHECK FOR 110 OR BASE MEMORY PARITY CHECK

IN

XCHG

IN

AND

CHECKPOINT 32 FOR ADDRESS LINE 0->15 FAILURE

NOV

OUT

NOV

JNZ

LODSW

OR

LOOPZ

JNZ

LOOSW

XOR

JNZ

SUB

STasw

NOV

STOSW

AX,O

CI3

CHECK FOR END OF 64K BLOCK

SETUP NEXT PATTERN

AX.SI

AX,SI

CII

AX,Dl

CI3

AX.OX

CI2

CI3

AL,PORT B

AL,AH -

AL,DMA PAGE+6

AH,AL ­

AL,32H tr.!F'G PORT,AL

AX,a

CI3

AX

STQSW

AX

51,51

CX,BX

CX,2

AX,OFFFFH

C13

AX,AX

CI2A

CI3

AX.OFFFFH

CI3

01,01

DI,OFFFEH

1-2

06-10-85

CHECK FOR I 10 OR BASE MEMOR Y

RESTORE AX TO 0000

GO IF YES

END I NG ZERO PATTERN WR I TTEN TO MEMORY?

YES RETURN TO CALLER WITH AL=O

CHECK I F LAST PATTERN =55AA

GO IF NOT

LAST PATTERN 0 I 0 11

GO IF YES

WR I TE 55AA TO STORAGE

; CHECK FOR I/O-PAR I TY CHECK

; SAVE ERROR

; CHECK FOR R/. OR 110 ERROR

I

I

<><> <><><><><><> <> <> <> <>

<><> CHECKPOINT 32 <><>

; RESTORE AX I SET AX TO ZERO)

; EXIT IF' PARITY ERROR

64K ADDRESS TEST AND FILL WITH ZERO

DEC

SUB

MOV

SUB

STOSW

INC

REP

DEC

STOSW

SUB

MOV

5U8

LODS.

XDR

JNZ

IN

XCHG

IN

AND

MDV

JNP

STGTST_CNT

OX,OX

CI3

DX,OIOIH

C3

OJ ,01

CX,BX

CX,I

AX, 1010 I 0' 0 I a

I 0 1 0 1 OB

SI.OIOIO! 01 0 1 0 I 0 1 0 I B

; WR ITE 0101 TO STORAGE

ERROR IF ZF NOT SET

POINT TO START OF BLOCK

GET THE BLOCK COUNT

DIVIDE BY 2

SECOND CHECKER PATTERN

FIRST CHECKER PATTERN

FIRST CHECKER PATTERN TO AX

WRITE IT TO MEMORY

SECOND CHECKER PATTERN TO AX

WRITE IT TO MEMORY

DO I T FOR CX COUNT

GET THE DATA

CHECK CORRECT

EXIT IF NOT

GET NEXT DATA

CHECK SECOND FA TTERN

CONT I NUE TILL DONE

J ERROR EXIT IF' NOT CORRECT

WRITE FIRST AND LAST LOCATION=FFFF

• PO I NT TO START OF BLOCK

; GET THE BLOCK COUNT

I DO ALL LOCATiONS BUT LAST

1 WRITE FIRST LOCATION AS FFFFH

I WRITE ZERO

; WRITE IT

LAST WORD IS FFFF

PO I NT TO START OF BLOCK

GET THE BLOCK COUNT

GET THE DATA

CHECK CORRECT

EXIT IF NOT

GET NEXT DATA

ANY BIT ON i"

CONT I NUE TILL LAST WORD

GO I F NOT CORRECT

GET LAST WORD

SIB FFFF

EXIT IF NOT

J CLEAR FIRST WORD

J CLEAR TOP WORD

CHECK FOR

SAVE ERROR

110 PAR I TY CHECK

CHECK FOR R/W OR 1/0 ERROR

SET AX EQUAL lERO

ERROR EX I T IF ZF NOT SET

5-94 TEST6

IBM Per-eo"_1 Computer MACRO Assembler V."slon 2.00

TEST6 ---06/10/85 POST TESTS AND SYSTEM BOOT STRAP

1-3

06-10-85

229

230

231

232

233 a I 00

234 0100 52

23' a

I 0 1 06

23. 0102 50

237 0103 B8 - - - - R

238 a

I 06 8E CO

239 0108 58

2., 0109 50

2.2

OIOA BC OA a

I OC 26: 88 36 00 1 5 R

2.3

2 •• 01 1 I 8 I FA C800

2.5 01 15 7C 00

2 •• 01 17 E8 0000 E

2.7 011A 8E 0000 E

248 0110 E8 0000 E

2'9 0120

250 0120 58

251 0121 07

252 0122 5A

253 0123 C3

25. 0124

255 0124 8A a

I 02

25. 0127 E8 0000 E

257 012A EB F4

258 012C

259

2.0

2.'

2.2

263

2.'

2.5

2 ••

2.7

2.8 012C

2.9

270

271

272 012C 86 EO

273 012E 2B C9

274 0130

275 0130 E4 64

27& 0132 A8 02

277 0134 EO FA.

278 0136 E3 34

279 013886 EO

280

281

282

283 013A Eb 60

28. 013C 2B C9

285

28.

287

288 013E E4 64

289 0140 8A EO

290 0142 A8 01

291 0144 74 02

292 0146 E4 60

293 0148 F6 C4 02

29' 0146 EO Fl

295 0140 75 10

29&

297

298

299 014F 83 06

300 0151 2B C9

301 0153 E4 64

302 0155 A8 01

303 0151 EI FA

30. 0159 75 08

305 o

15B FE CB

30. 0150 15 F4

307 015F" FE C3

308 0161 EB 09

309

310

311

312 016328 e9

313

31. 0165 E2 FE

31S 0167 E4 60

31. 0169 83 E9 01

317 016C

318 016C C3

319 0160

320

321

322

323

32.

32S

32.

327

328

329

330

331

332 0160

333

33' 0160 B8 - - - - R

33S 0170 8E 06

33. 0112 8E CO

337

338

339

3.0 0174 C7 06 0078 R 0000 E

3',

011A 8C OE OOH R

3.2

PAGE

; -;~ ~~; ;~O~E~~- ;~~ ~~R~R ~E~ ~~~E-;~~ R~~ ~~E~;~~~ E;R~R~ -------------- -­

.

----------­

ROM ERR PRoe NEAR

PUSH

PUSH

PUSH

MOV

0'

ES

A'

AX.DATA

SAVE PO INTER

SET ES TO DATA SEGMENT

MOV

POP

PUSH

MOV

MOV

ES,AX

AX

AX

OX.OS

ES I.MFG_ERR_FLAG, DH

RESTORE AX

GET ADDRESS PO INTER

<><><> <> <> <><> <><> <><><> <> <>

<><> CHECKPOINTS eO->F4

CMP

"L

CALL

MOV

CALL

ROM ERR ENOl

-POP

OX,DCBOOH

ROM ERR BEEP

PRT-SEG-

S I ,OFFSET F3A

E_MSG

DISPLAY CARD IN ERROR?

GIVE DISPLAY CARD FAIL BEEP

PR I NT SEGMENT I N ERROR a

I SPLA Y ERROR MESSAGE

POP

POP

RET

ROM ERR BEEP 1

-MOV

AX

ES

OX

: BEEP I LONG, 2 SHORT

CALL

OX,Ol02H

ERR BEEP

SHORT ROM_ERR_ENO "MP

ROM_ERR ENOP

: -

-------------

- - - - ---------- -----­

TH I S SUBROUTINE SENDS AN OUTPUT COMMAND TO THE KEYBOARD AND

RECE I VES THE KEYBOARD RESPONSE.

ENTRY REQUIREMENTS:

AL

=

COMMAND/DATA TO BE SENT

EXIT PARAMETERS I

ZERO FLAG

=

1 IF ACK RECE I 'lED FROM THE KEY BOARD

AL := RESPONSE

~~ ~ ~~ ~~~~ -;;~~ ~

-

~E~R

----------- ------------------------------------­

I - - - - -

XCHG

SUB

XMITLOOP:

AH,AL cX,ex

IN AL,STATUS PORT

TEST AL. I NPT BUF FULL

LOOPNZ XMITLOOP ­

.JCXZ

XCHG

SHORT XMIT EXIT

AH ,AL -

: - - - - -

MOV sUB

XMIT_3; IN

TEST

LOOPZ

"NZ

DEC

"NZ

INC

"MP

: - - - - -

CHECK I NPUT BUFFER FULL

ISSUE THE COMMAND

OUT

SUB

XMIT_41 SUB

XMIT_5: LOOP

IN

SUB

XMIT EXIT:

RET

XMIT_1!ID42 ENDP

MOV

MDV

MDV

PORT A,AL

CX,CX

J----CHECK OUTPUT BUFFER FULL

XMIT_I: IN AL,STATUS PORT

MOV AH,AL -

TEST

"Z

IN

AL ,OUT BUF FULL

XMIT 2-

XM I T _2: TEST

AL,PORT A

AH,INPT-BUF FULL

LOOPNZ XMl T I -

"NZ SHORT XMIT_EXIT

CHECK OUTPUT BUFFER FULL

BL,6

CX,CX

AL,STATUS PORT

AL, OUT BUJ." FULL

XMIT 3-

XM I T-4

BL -

SHORT XMIT 3

BL -

SHORT XMIT_EXIT

GET THE DATA

XMIT 5

AL,PORT A ex,OIH -

AX.ABSO

DS,AX

ES,AX

SEND THE COMMAND

SET LOOP COUNT

SAVE STATUS

CHECK IF 8042 HAS DATA

GO IF NOT

FLUSH DATA

CHECK COMMAND ACCEPTED

NO FLUSH OR COMMAND NOT ACCEPTED

DECREMENT OUTER LOOP

TRY AGAIN

SET ERROR FLAG

8042 STUCK BUSY

1--- BOOT STRAP -INT 19 H - - - - - - - - - - - - - - - - - - - - - - - - - ­

I BOOT STRAP LOADER :

I TRACK O. SECTOR 1 I S READ I NTO THE

BOOT LOCAT 1ON (SEGMENT a OFFSET 7COO ~

AND CONTROL IS TRANSFERREO THERE.

I F THERE [S A HARDWARE ERROR CONTROL IS

TRANSFERRED TO THE ROM BASIC ENTRY POINT

BOOT_STRAP_I

MOV

MOV eX,ex

ASSUME CS;CODE,DS:ABSO,ESIABSO

PROC NEAR

SAVE COMMAND

SET LOOP TIME-OUT

CHECK I NPUT BUFFER FULL

I RESTORE COMMAND

SET COUNT

SET LOOP COUNT

CHECK IF HAS DATA

WAIT TILL DONE

ALLOW TIME FOR POSSIBLE

ERROR -> SYSTEM UNIT OR KEYBOARD

I SET ex OTHER THAN ZERO

; ESTABLISH ADDRESSING

RESET THE DISK PARAMETER TABLE VECTOR

WORD PTR .DISK POINTER, OFFSET DISK BASE

WORD PTR

~DISK::::POINTER+2,CS

­

TEST6

5-95

IBM Person. I Co",puter MACRO Assembler Veraion 2.00

TEST6 ---06/10/65 POST TESTS ANa SYSTEM 800T STRAP

1-4

06-10-B5

3'3

3"

3'5 OllE 33 eo

34. 0160 89 0100

3.7 0163 8F lCOO R

3'8

0186 F31 AS

34'

350

351

352 0166 Fa

353 0189 89 0004

35' 018C 51

355 0180 84 00

35. 018F CD 13

357 0191 12 OF

358

359 0193 B8 0201

360 0196 2B 02

361 0198 8E C2

362 019A BB 7eOO R

3&3 019D 89 0001

364 OIAO CO 13

365 0 I A2 59

36& 0 I A3 13 09

361 0lA5 80 Fe 80

368 0lA8 74 22

369 OIAA E2 EO

310 OIAe EB IE

371

372

373

374

315 OIAE eo

3E 7COO R 06

316 0183 72 11

377

318

31'

3130 01B5 8F 7eoo R

381 0lB8 B9 0008

362 0 I B8 A I 7eoo R

383

384 OIBE 83 C7 02

385 OICI 3B 05

386 01 C3 E I F9

387 0lC5 74 SF

388

389 01 e7 EA 7eoo - - - -

3'0

3"

3.2

393 a

I CC 80 44

394 OICE E6 80

R

3'5

396 0100 EEl 0000 E

397 0103 F6 06 0088 R 01

3'8

399 0108 B6 - - - R

400 OIOB BE 06

401 01001430

• 02

'03

40.

405 OIDF BO OE

406 aiEl E8 0000 E

401 0lE4 A8 06

408 0lE6 15 34

40'

410 0lE8 2B eo

411 OlEA 28 02

412 alEC CD 13

413 OIEE 89 0003

414 OIFI

415 OIFI 51

416 0 I F2 8A 0080

417 0lF5 B8 0201

418 0lF8 28 DB

419 OIFA 8E C3

420 OIFC B8 7COO R

421 OIFF 89 0001

422 0202 CD 13

423 0204 59

424 0205 12 06

425 0201 81 3E lDFE R AA55

42& 0200

427

14

428 020F 51

B8

429 0210 8A 0080

430 0213 28 CO

43 I 0215 CD 13

432 0211 59

433 02\8 12 08

434 021A E2 05 .3.

437

438 021C 80 45

439 021E E6 80

• • 0

441 0220 CD 18

442

443

444

445 0222 E2 EB

446 0224 EB F6

441

448

44'

450 0226 BE 0000 E

451 0229 E8 0000 E

452 022C EB FE

453 022E

454 022E

455 022E

XOR

MOV

MOV

REP

AX,AX

CX,256

0 I ,OFFSET OBOOT LOCN

STOSW

LOAD SYSTEM FROM 01 SKETTE

; CLEAR 256 WORDS

CX HAS RETRY COUNT

HI,

5T'

MOV

PUSH

MOV tNT

.JC

CX,4

CX

AH,O

13H

H2

SET RETRY COUNT

IPL SYSTEM

RESET THE DISKETTE SYSTEM

01 SKETTE 10

IF ERROR7 TRY AGA I N

H2:

MOV

SUB

MOV

MOV

MOV

INT

POP

,JNe eMP

,JZ

LOOP eMP

AX,20lH

DX,OX

ES,DX

8X,OFFSET 'i11800T LOCN

CX,I -

13H ex

H4

AH,BOH

H5

HI

SHORT H5

READ I N THE SINGLE SECTOR

TO THE 800T LOCATION

DRIVE 0, HEAD 0

SECTOR 1, TRACK 0

DISKETTE 10

RECOVER RETRY COUNT

CARRY FLAG SET BY UNSUCCESSFUL READ

IF TIME OUT, NO RETRY

TRY FIXED DISK

DO I T FOR RETRY TI MES

TRY FIXED 01 SK

;

,-----

BOOT RECORD READ SUCCESSFUL

-----

INSURE FIRST BYTE OF LOADED BOOT RECORD ]S VALID (NOT ZERO)

H4: eMP e9

INSURE DATA PATTERN F]RST 8 WORDS NOT ALL EQUAL

H4A:

H4_A:

1----­

H5:

H8:

1-----

MOV

MOV

MOV

01 ,OFFSET 'iIIBOOT LOCN

CX,8 -

AX,WORD PTR Cl800T_LOCN

CHECK DATA PATTERN

CHECK THE NEXT 8 WORDS

AOO eMP

LOOPZ

JZ

01,2

AX, [01]

H4'

HIO

POINT TO NEXT LOCATION

CHECK DATA PATTERN FOR A FILL PATTERN

BOOT NOT VALID PRINT MESSAGE HALT

...IMP 4tSOOT _ LOCN

ATTEMPT BOOTSTRAP FROM FIXED DISK

MOV

OUT

AL,044H

MFG PORT, AL

ASSUME Ds:5ATA

CALL

TEST

005

ClILASTRATE, DUAL

ASSUME OS :ABSO

MOV AX, ABSO

MOV OS,AX

,JZ H •

<><><><> <> <> <><><><><> <>

<><> CHECKPOINT 44 <><>

FLOPPY/FIXED DISK CARD INSTALLED

ESTABLISH ADDRESSING

GO IF NOT

CHECK FOR FIXED D]SK INITIALIZATION ERROR

MOV

CALL

TEST

,JNZ

AL,CMOS DIAG

CMOS READ

AL,HF FAIL

H' -

GET POST POWER ON STATUS (NM] ENABLED)

FROM DIAGNOSTIC STATUS 8YTE

DID WE HAVE A FIXED DISK FAILURE?

GO IF YES

SUB

SUB

INT

MOV

PUSH

MOV

MOV

SUB

MOV

MOV

MOV

INT

POP

.JC

CMP

.JZ

PUSH

MOV

SUB

INT

POP

,Je

LOOP

AX,AX

DX,DX

13H

CX ,3

RESET DrSKETTE

RETRY COUNT

CX

DX,OOBOH

AX,020lH

BX,BX

SAVE RETRY COUNT

FIXED DISK ZERO

READ IN A SINGLE SECTOR

ES.BX

BX ,OFFSET 'i11800T LOCN ex,

13H

1 -

TO THE BOOT LOCATI ON

SECTOR \, TRACK 0

FILE I/O CALL

RECOVER RETRY COUNT CX

H8

WORD F'TR OBOOT LOCN+510D,OAA55H ; TEST FOR GENERIC BOOT BLOCK

H4_A ex

OX ,0080H

AX,AX

13H ex

HIOA

H.

FIXED DISK ZERO

RESET THE F I XED 0 I SK

FILE 1/0 CALL

RESTORE LOOP COUNT

IF ERROR, TRY AGAJN

DO I T FOR RETRY TIMES

UNABLE TO IPL FROM THE DISKETTE OR F]XED DISK

H9: MOV

OUT

AL,045H

MFG_PORT ,AL

18H

<><> <><><><><><> <><><><>

<><> CHECKPOINT 45 <><>

I GO TO RESIDENT BASIC

HIOA:

INT

HARD FILE RESET FAILURE

LOOP

JMP

H8

H.

TRY RESET AGA I N

GO TO RESIDENT BASIC

! F D! SKETTE READ OK BUT 800T RECORD I S NOT STOP SYSTEM ALLOW 50FT RESET

HIO:

Hit:

MOV

CALL

...IMP

BOOT STRAP I

F'QST6 ~NOP

CODE ENDS

END

S [ ,OFFSET E602

E MSG

HII

ENDP

; PR I NT DISKETTE BOOT

; PR I NT MESSAGE

5-96 TEST6

1- I

06-' 0-65

IBM Personal Computer MACRO Assembler

DSKETTE - 06/'0/65 DISKETTE BIOS

V.rsion 2.00

I

16 ..

17

18

20

IS

21

14

58

5'

60

61

62

63

64

65

66

67

68

36

37

38

3.

40

49

50

5 I

52

53

54

55

56

57

41

42

43

44

45

46

47

48

28

2'

30

31

32

33

34

35

22

23

24

25

26

27

2

3

4

6

7

8

10

"

13

5 . 0000

76

77

78

79

80

81

82

83

84

6'

70

71

72

73

74

75

85

86

87

88

8'

..

'8

95

.6

97

100

101

'0

"

94

102

103

104

105

10.

107

PAGE " 6 , ' 2 '

TITLE DSKETTE -06/10/65 DISKETTE BIOS

.266C

.LIST

CODE SEGMENT BYTE PUBL I C

PUBLIC DISK INT I

PUBLIC SEEK-

PUBLIC DSKETTE SETUP

PUBLIC DISKETTE_'O_'

EXTRN

EXTRN

EXTRN

EXTRN

CMOS READ1NEAR

DDS: NEAR

0 I SK BASE ,NEAR

WA ITF:NEAR

READ CMOS LOCATION RDUTINE

LOAD IDS) WITH DATA SEGMENT SELECTOR

DISKETTE PARAMETER TABLE LOCATION

FIXED WAIT ROUTINE (CX) -'5.066 US

INT '3H - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ­

DISKETTE I/O

THIS INTERFACE PROVIDES ACCESS TO THE 5 1/4~ DISKETTE DRIVES

320/360K DISKETTE DRIVES AND 1.2104 DISKETTE DRIVES SUPPORTED

INPUT

(AH 1= OOH RESET 0 I SKETTE SYSTEM

HARD RESET TO NEC, PREPARE COMMAND, RECALIBRATE REQUIRED

ON ALL DR I VES

(AHI= 01H READ THE STATUS OF THE SYSTEM INTO (AHI

ODSKETTE_STATUS FROM LAST OPERATION IS USED

REGISTERS FOR READ/WRITE/VERIFY/FORMAT

(DLI DRIVE NUMBER (0-1 ALLOWED, VALUE CHECKED)

(DHI HEAD NUMBER (0-1 ALLOWED, NOT VALUE CHECKED)

(CHI TRACK NUMBER INOT VALUE CHECKED)

MEDIA DRIVE TRACK NUMBER

320/360 320/360 0-39

320/360 t.2M

720K

1.2M

1.2M

72DK

0-39

0-79

0-79

(CL) SECTOR NUMBER (NOT VALUE CHECKED, NOT US EO FOR FORMAT)

MED I A

320/360

DR [VE

320/360

SECTOR NUMBER

1-8/9

320/360

1.2M

1.2M

1.2M

1-8/9

1-15

720K 720K 1-9

(AL) NUMBER OF SECTORS (NOT VALUE CHECKED)

MEDIA

320/360

DRIVE

320/360

MAX NUMBER OF SECTORS

6/9

8/9 320/360

1.2101

720K

I.2M

'.2104

720K

15

9

(ES: BX) ADDRESS OF BUFFER i REQU I RED FOR VER I FY I

(AH) = 02H READ THE DESIRED SECTORS INTO MEMORY

(AH) = 03H WR I TE THE DES I RED SECTORS FROM MEMORY

IAH)= 04H VERIFY THE DESIRED SECTORS

(AH) = 05H FORMAT THE DES[RED TRACK

FOR THE FORMAT OPERATION, THE BUFFER POINTER (ES,BX) MUST

POINT TO THE COLLECTION OF DESIRED ADDRESS FIELDS FOR THE

TRACK. EACH FIELD I S COMPOSED OF 4 BYTES, (C, H, R, N I, WHERE

C ;;: TRACK NUMBER, H;;:HEAD NUMBER. R "" SECTOR NUMBER. N;;: NUMBER

OF BYTES PER SECTOR (00=128, 01=256, 02=512. 03=1024,)

THERE MUST BE ONE ENTRY FOR EVERY SECTOR ON THE TRACK.

THI S INFORMATION IS USED TO FIND THE REQUESTED SECTOR OUR [NG

READ/WRITE ACCESS.

PRIOR TO FORMATTING A DISKETTE, IF THERE EXISTS MORE THAN

ONE SUPPORTED MEDIA FORMAT TYPE WITHIN THE DRIVE IN QUESTION,

THEN "SET DASD TYPE" (INT 13H, AH = 17HI MUST BE CALLED TO

SET THE 0 I SKETTE TYPE THAT I S TO BE FORMATTED. I F " SET DASD

TYPE" IS NOT CALLED, THE FORMAT ROUTINE W[LL ASSUME THE

MEDIA FORMAT TO BE THE MAXIMUM CAPACITY OF THE DRIVE.

IN' ORDER TO FORMAT 320/360K MEDIA [N EITHER A 320/360K OR

I .2M D [SKETTE DR I VE THE GAP LENGTH FOR FORMAT PARAMETER

OF DISK BASE MUST BE CHANGE TO 050H. ALSO THE EOT

PARAMETER (LAST SECTOR ON TRACK) MUST BE SET TO THE

DESIRED NUMBER OF SECTORS/TRACK 8 FOR 320K, 9 FOR 360K.

DISK BASE IS POINTED TO BY DISK POINTER LOCATED AT

ABSOLUTE ADDRESS 0:78.

WHEN 320/360K FORMAT OPERATIONS ARE COMPLETE. THE PARAMETERS

SHOULD BE RESTORED TO THEIR RESPECTIVE INITIAL VALUES.

IAH)= 08H READ DR[VE PARAMETERS

REG I STERS

INPUT

(DL) DRIVE NUMBER (0-( ALLOWED. VALUE CHECKED)

OUTPUT

(ES=DI) POINTS TO DISK BASE

(CHI LOW ORDER 8 OF 10 BITS MAXIMUM NUMBER OF TRACKS

(CLI BITS 7 & 6 HIGH ORDER TWO BITS OF MAXIMUM TRACKS

81 TS 5 THRU 0 MAX I MUM SECTORS PER TRACK

(DH) MAX [MUM HEAD NUMBER

(DLl NUMBER OF DISKETTE DRIVES INSTALLED

(BHl 0

(BLl B[TS 7 THRU 4 0

(AX) elTs 3 THRU 0

0

VALID DRIVE TYPE VALUE IN CMOS

UNDER THE FOLLOWING CIRCUMSTANCES:

'1) THE DRIVE NUMBER IS I NVA1...I0,

(21 THE DRIVE TYPE IS UNKNOWN AND CMOS IS NOT PRESENT,

(31 THE DR I VE TYPE I S UNKNOWN AND CMOS I S BAD,

(4) OR THE DRIVE TYPE IS UNKNOWN AND THE CMOS DR[VE TYPE IS INVALID

THEN,ES,AX,BX,CX,DH,DI;;:O ; DL;;:NUh4BER OF DR[VES.

IF NO DRIVES ARE PRESENT THEN: ES,AX,BX,CX,DX,DI:O.

@DSKETTE_STATUS = 0 AND CY I S RESET.

DISKETTE 5-97

168 ,'9

110

111

112

113

114

115

11.

111

118

119

180

181

182

183

184

18'

18.

181

156

151

158

159

,.,

,.4

I ••

I ••

161

188

18.

190

191

192

193

194 ,.5

,.,

14'

141

...

150

151

152

153

154

155

I • •

200

201

202

203

204

IBM Personal Computer MACRO Assembler-

DSKETTE -06/10185 DISKETTE BIOS

PAGE

VerSion 2.00

108

109

110

III

112

113

114

"'

111

118

I I .

120

121

122

123

12'

125

12.

121

128

12.

130

131

132

133

134

135

136

131

138

13.

. . 0

,.2

143

1-2

06-10-85

I AH)

REG

=

15H READ DASD TYPE

I STERS

(AH) ON RETURN IF CARRY FLAG NOT SET, OTHERWISE ERROR

00 OR 1 VE NOT PRESENT

01 DISKETTE, NO CHANCiE LINE AVAILABLE

02 DISKETTE, CHANGE LINE AVAILABLE

03 FIXED DISK lOLl DRIVE NUMBER (0-1 ALLOWED, VALUE CHECKED)

(AHI: 16H DISK CHANGE LINE STATUS

REG I STERS

(AH)=OO DISK CHANGE LINE NOT ACTIVE

06 Dt SK CHANGE LINE ACTIVE & CARRY BIT ON

(Dll DRIVE NUMBER 10-] ALLDWED, VALUE CHECKED)

(AHI= l1H SET DASD TYPE FOR FORMAT

REG I STERS

(ALI 00 NOT USED

01 DISKETTE 320/360K IN 3&OK DRIVE

02 DISKETTE 360K IN 1.2M DRIVE

03 DISKETTE 1.2M IN 1.2M DRIVE

(Dll DR

O. 0 I SKETTE 120K IN 120K DR I VE

I VE NUMBER (0-1 ALLOWED, VALUE CHECKED;

DO NOT USE WHEN DISKETTE ATTACH CARD USED'

DISK CHANGE STATUS

DRIVE IS SPECIFIED.

IS ONLY CHECKED WHEN A 1.2M BYTE DISKETTE

IF THE DISK CHANGE lINE IS FOUND TO BE

ACTIVE THE FOLLOWING ACTIONS TAKE PLACE:

ATTEMPT TO RESET DISK CHANGE LINE TO INACTIVE STATE.

IF ATTEMPT SUCCEEDS SET DASD TYPE FOR FORMAT AND RETURN DISK

CHANGE ERROR CODE

IF ATTEMPT FAILS RETURN TIMEOUT ERROR CODE AND SET DASD TYPE

TO A PREDETERMINED STATE INDICATING MEDIA TYPE UNKNOWN.

I F THE DISK CHANGE Ll NE IN I NACT I VE PERFORM SET DASD TYPE FOR FORMA T .

DATA VARIABLE -- .DISK POINTER

DOUBLE WORD POINTER TO THE CURRENT SET OF DISKETTE PARAMETERS

OUTPUT FOR ALL FUNCT IONS

AH '" STATUS OF OPERATION

STATUS BITS ARE DEFINED IN THE EQUATES FOR ODSKETTE STATUS

CY

VARIABLE IN THE DATA SEGMENT OF THIS MODULE

= 0 SUCCESSFUL OPERATION (AH=O ON RETURN, EXCEPT FOR READ DASD

CY

=

I

TYPE AH=115J).

FAILED OPERATION (AH HAS ERROR REASON)

FOR READ/WRITE/VERIFY

NOTE:

DS,BX,DX,CX PRESERVED

I F AN ERROR I S REPORTED BY THE 0 I SKETTE CODE, THE APPROPR I ATE

ACTION IS TO RESET THE DiSKETTE, THEN RETRY THE OPERATION.

ON READ ACCESSES, NO MOTOR START DELAY IS TAKEN, SO THAT

THREE RETRIES ARE REQUIRED ON READS TO ENSURE THAT THE

PROBLEM I S NOT DUE TO MOTOR START-UP.

L1 ST

DISKETTE STATE MACHINE ABSOLUTE ADDRESS 40:90 (DRIVE A' & 91 (DRIVE B)

LI ST

I

I

I

RESERVED

I

I

PRESENT STATE

000: 360K IN 360K DRIVE UNESTABLISHED

001: 360K IN 1.2M DRIVE UNESTABllSHED

010: 1.2M IN 1.2M DRIVE UNESTABL1SHED

011: 360K IN 360K DRIVE ESTABLISHED

100: 360K IN 1.2M DRIVE ESTABLISHED

101: 1.2M IN 1.2M DRIVE ESTABLISHED

1 10: RESERVED

I I 1: NONE OF THE AeOVE

------>

MEDIA/DRIVE ESTABLISHED

--------> DOUBLE STEPPING REQUIRED (360K IN 1.2M

DR IVE)

------------>

DATA TRANSFER RATE FOR THIS DRIVE:

00: 500 KBS

01: 300 KBS

10: 250 KBS

RESERVED

LIST

STATE OPERATION STARTED ABSOLUTE ADDRESS 40:92 (DRIVE A1 & 93 (DRIVE 8)

PRESENT CYLINDER NUMBER ABSOLUTE ADDRESS 40:94 (DRIVE AI & 95 (DRIVE 81

5-98 DISKETTE

21.

211

216

21'

220

221

222

223

22.

20'

20.

201

208 0000

209 0000 FB

210 0001 55

211 0002 57

212 0003 52

213 0004 53

214 0005 51

215 0006 8B EC

22'

22.

227

226

229 0008 IE

230 0009 56

231 OOOA E8 DODD E

232 0000 80 FC 18

233 0010 72 02

23'

235 00 I 2 B4 14

236 0014

237 0014 80 FC 01

238 0017 76 OC

239 0019 80 FC 08

240 OOIC 74 07

241 OOIE 80 FA 01

242 0021 76 02

243 0023 B4 14

244 0025

245 0025 8A CC

246 0027 32 ED

247 0029 00 EI

248 002B BB 004E R

249 002E 03 09

250 0030 8A E6

251 0032 32 F6

252 0034 8B FO

253 0036 8B FA

254 0038 8A 26 0041

255 003C C6 06 0041

25.

257

256

25.

2.,

2.2

2.3

2 ••

2.'

2 ••

2.7

2.6

2.'

270

271

272

273

214 0041 2£, FF 17

275 0044 5E

276 0045 IF

277 0046 59

278 0047 5B

279 0048 5A

280 0049 SF

281 004A 50

282 004B CA 0002

263

26'

285 004E 007E R

286 0050 00E8 R

287 0052 00F4 R

288 0054 0 I 00 R

289 0056 0 I OC R

290 0058 0 I 18 R

291 005A a 16A R

292 005C 016A R

293 005E 0174 R

294 0060 aT

6A R

295 0062 0 I 6A R

296 0064 0 I 6A R

297 0066 016A R

298 0068 0 I 6A R

299 006A 0 I 6A R

300 DD6C 016A R

30 I 006E 0 I 6A R

302 0070 016A R

303 0072 016A R

304 0074 016A R

305 0076 016A R

306 0078 021A R

307 007A 023C R

308 007C 0267 R

309 = 007E

310

311

DO

IBM Personal Computer MACRO A""embler

DSKETTE -06/10/85 DISKETTE BIOS

Version 2.00 1-3

06-10-85

PAGE

ASSUME CS:CDDE,DS:DATA,ES:DATA

,LI ST

DISKETTE 10 1

STI­

PROC

PUSH

PUSH

PUSH

PUSH

PUSH

MOV

8P

01

OX

BX ex

BP,SP

PUSH

PUSH

CALL eMP

JB

0'

51

DDS

AH,IFNC TAE-FNC TAB)

OK_FUNC-

12 p» ENTRY PO I NT FOR ORG OEC59H

I I NTERRUPTS BACK ON

; USER REG I STER

I USER REGISTER

I HEAD " DRIVE" OR USER REGISTER

I 8UFFER OFFSET PARAMETER OR REG I STER

; TRACK "-SECTOR , OR USER REGISTER

BP 0::> PARAMETER LIST DEP. ON AH

ISP] = SECTOR"

IsP+ I] :: TRACK"

Isp+ 2] 0:: BUFFER OFFSET

FOR RETURN OF DR I VE PARAMETERS:

CLI[BPj :: BITS 7&6 HI BITS OF MAX CYL

BITS 0-5 MAX SECTORS/TRACK

CH/[BP+I] = LOW 8 BITS OF MAX CYL.

BL/IBP+2] = BITS 7-4 = 0

BITS 3-0

=

VALl 0 CMOS TYPE

BH/[BP+3] 0

DL/IBP+4] = # DRIVES INSTALLEO

DH/IBP+5] 0:: MAX HEAD'

DI/IBP+6]

=

OFFSET TO DISK BASE

BUFFER SEGMENT PARM OR USER REG I STER

USER REG I STERS

SEGMENT OF B [aS OAT A AREA TO OS

CHECK FOR> LARGEST FUNCTION

FUNCT ION OK

MOV

OK FUNC:

CMP

JBE eMP

JZ eMP

JBE

MOV

MOV

XDR

SHL

MOV

ADD

MDV

XDR

MDV

MDV

MDV

MDV

AH,I4H

AH,l

OK DRV

AH78

OK DRV

DL-:-I

OK ORV

AH-:-!4H

CL,AH

CH,CH

CL,I

BX,OFFSET FNC TAB

BX,CX -

AH,OH

DH,OH

SI,AX

OJ ,DX

AH,@DSKETTE STATUS

ODSKETTE_STATUS,O

REPLACE WITH KNOWN I NV AL I 0 FUNCT I ON

RESET OR STATUS ?

IF RESET OR STATUS DRIVE ALWAYS OK

READ OR I VE PARMS ?

I F SO DR I VE CHECKED LATER

DRIVES a

AND 1 OK

IF 0 OR I THEN ,JUMP

REPLACE WITH KNOWN INVALID FUNCTION

CL

CX

=

FUNCTION

=

FUNCTION

FUNCTION TIMES 2

LOAD START OF FUNCTION TABLE

ADD OFFSET INTO TABLE => ROUTINE

AX :: HEAD , , , OF SECTORS OR DASD TYPE

OX :: DRIVE'

; S I :: HEAD ' , ' OF SECTORS OR DASD TYPE

I 01 :: DRIVE.

: LOAD STATUS TO AH FOR STATUS FUNCTION

; I N I TI AL I ZE FOR ALL OTHERS

THROUGHOUT THE DISKETTE BIOS, THE FOLLOWING INFORMATION IS CONTAINED IN

THE FOLLOWING MEMORY LOCATIONS AND REGISTERS. NOT ALL DISKETTE BIOS

FUNCTIONS REQUIRE ALL OF THESE PARAMETERS.

01

51-HI

DRIVE'

HEAD.

S I-LOW I , OF SECTORS OR DASD TYPE FOR FORMAT

ES

[BP]

IBP+l ]

IBP+2]

BUFFER SEGMENT

SECTOR

TRACK.

"

BUFFER OFFSET

ACROSS CALLS TO SUBROUT 1 NES THE CARRY FLAG I CY= I I

I

PDP

RET

BP

2

WHERE I NO I CATED IN

SUBROUT I NE PROLOGUES, REPRESENTS AN EXCEPT I ON RETURN (NORMALLY AN ERROR

CONDITION). IN MOST CASES, WHEN CY = 1, @DSKETTE STATUS CONTAINS THE

SPEC I F I C ERROR CODE.

IAHI

=

IltDSKETTE STATUS

CALL

POP

WORD PTR CS: [BX1

51

CALL THE REQUESTED FUNCT I ON

RESTORE ALL REGISTERS

POP

POP

POP

PDP

POP

OS ex

BX ox

01

; THROW AWAY SAVED FLAGS

:.~~-~~; -~; - - - - - ~ ~~; ~~~~~ - - - - - - - - - -

-

- -­

-

OW

OW

OW

OW

OW

OW

OW

OW

OW

OW

OW

OW

FNC_TAE EQU

OW

OW

OW

OW

OW

OW

OW

DW

OW

OW

OW

DISK-STATUS

0 I SK-READ

DISK-WRITE

D! SK-VERF

D! SK-FORMAT

FNC ERR

FNC-ERR

0 J SK PARMS

FNC ERR

FNC-ERR

FNC-ERR

FNC-ERR

FNC-ERR

FNC-ERR

FNC-ERR

FNC-ERR

FNC-ERR

FNC-ERR

FNC-ERR

FNC-ERR

DISK TYPE

DISK-CHANGE

FORMAT SET

, -

AH

AH

AH

AH

AH

AH

AH

AH

AH

AH

AH

AH

AH

AH

AH

AH

AH

AH

AH

AH

AH

AH

AH

AH

END

00 I RESET

01; STATUS

02; READ

031 WRITE

041 VERIFY

05; FORMAT

06; INVALIO

01; INVALID

08; READ DRIVE PARAMETERS

09; INVALID

OAj INVALID

OB, INVALID

OC; INVALID

00; INVALID

DE; INVALID

OF; INVALID

10; INVALID

II; INVALID

12; INVALID

13; INVALID

14; INVALID

15; READ DASD TYPE

16; CHANGE STATUS

17; SET DASO TYPE

OISKETTE_IO_1 ENOP

DISKETTE 5-99

1-4

06-10-65

[BM Personal COMpute,.. NACRO Allsembler

DSKETTE -06/10/85 DISKETTE BIOS

Version 2.00

312

313

314

315

31.

317

318 007E

319 007E BA 03F2

320 0081 FA

321 0082 AO 003F R

322 0085 24 3F

323 0087 CO CO 04

324

325 008A OC 08

326 008C EE

327 0080 C6 06 003E R 00

328 0092 EB 00

329 0094 OC

330 0096 EE

04

331 0097 FB

332 0096 E8 02HC R

333 009B 72 44

334 0090 B9 OOCO

335

336 OOAO

337 OOAO 51

338 OOA I B8 OOEO R

339 00A4 50

340 00A5 Bo4 08

341 00A7 E8 07BD R

342 OOAA 58

343 OOAB E8

30404 OOAE 59

08A4 R

345 OOAF 72 30

3046 OOBI 3A OE 0042 R

347 00B5 75 2A

348 00B7 FE C 1

349 00B9 80 F9 C3

350 OOBC 76 E2

351

352

353

354 OOBE B8 0008 R

355 OOC I 50

356 00C2 B4 03

357 00C4 E8 07BO R

358 00C7 2A 02

359 00C9 E8 06CC R

360 OOCC E8 07BD R

361 OOCF B2 01

362 000 I E8 06CC R

363 0004 E8 07BD R

364 0007 58

365 0008

366 0008 E8 0620 R

367 OODB 8B DE

368 0000 8A C3

369 OOOF C3

310

371 ODED

372 OOEO 59

373 OOEI

374 OOEI 80 OE 0041 R 20

375 00E6 EB FO

376 00E8

377

375

37.

350

351

352

353

354

365 00E8

386 00E8 88 26 00041 R

367 OOEC E8 0620 R

388 OOEF 8B DE

389 OOF I 8A C3

390 OOF3 C3

391 00F4

3'2

393

394

395

39.

397

395

39.

400

401

402

403

404

0405 00F4

406 00F4 80 26 003F R 7F

407 00F9 B8 E646

408 OOFC E8 035C R

409 OOFF C3

410 0100

411

412

413

414

415

41.

417

415

419

420

421

422

423

424 0100

425 a I 00 B8 C54A

PAGE

: -

~ ~ ~~~~~~~T ~--

-

~~~~~ -;~~-~~~;~;;~- ~;~;~~:--

~

; ON EXIT: .DSKETTE_STATUS, CY REFLECT STATUS OF OPERATION 7;;-

~~~~;

------

;~~~

----

~~~~

--------------------------------------------------­

ox, 03F2H NOV

CL I

NOV

AND

ROL

OR

OUT

NOV

"".

OUT

5T I

CALL

"C

"OV

AL,ClMOTOR STATUS

AL,OO!!! tTIB

AL, 4

AL,OOOOIOOOB

DX,AL

.SEEK STATUS,O

$+2 -

AL,OOOOOIOOB

OX ,AL

WA[T [NT

DR ERR

CX-;-I 1000000B

ADAPTER CONTROL PORT

NO INTERRUPTS

GET DIGITAL OUTPUT REGISTER REFLECTION

KEEP SELECTED AND MOTOR ON BITS

MOTOR VALUE TO HIGH NIBBLE

DR I VE SELECT TO LOW NIBBLE

TURN ON I NTERRUPT ENABLE

RESET THE ADAPTER

SET RECALIBRATE REQUIRED ON ALL DRIVES

)!tAIT FOR 110

TURN OFF RESET BIT

RESET THE ADAPTER

ENABLE THE INTERRUPTS

WA I T FOR THE [NTERRUPT

I F ERROR. RETURN IT

CL

=

EXPECTED 'lINEC_STATUS

NXT DRV:

PUSH

"OV

PUSH

"OV

CALL

POP

CALL

POP

"e c••

"NZ

INC

C••

"BE

CX

AX, OFFSET DR POP ERR

AX - ­

AH,08H

NEC ouTPUT

AX -

RESULTS ex

DR ERR g~-;-~~~C_STATUS eL­

CL,JIOOOOIIB

NXT_DRV

SEND SPEC I F'( COMMAND TO NEC

SA VE FOR CALL

~OAD NEC_OUTPUT ERROR ADDRESS

SENSE INTERRUPT STATUS COMMAND

THROW AWAY ERROR RETURN

READ I N THE RESULTS

RESTORE AFTER CALL

ERROR RETURN

TEST FOR DR I VE READY TRANS I T I ON

EVERYTH I NG OK

NEXT EXPECTED .NEC STATUS

ALL POSS I BLE DR I VES CLEARED

FALL THRU IF 11000l00B OR >

NOV

PUSH

NOV

CALL

SUB

CALL

CALL

"OV

CALL

CALL

POP

RESBAC:

CALL

"OV

"OV

RET

AX, OFFSET RESBAC

AX

AH,03H

NEC OUTPUT

DL.DL

GET PARM

NEC-OUTPUT

DL. T

GET PARM

NEC-OUTPUT

AX

SETUP _END

BX, S [

AL,BL

LOAD ERROR ADDRESS

PUSH NEC OUT ERROR RETURN

SPEC I

F'(

COMMAND

OUTPUT THE COMMAND

FIRST SPECIFY BYTE

GET PARAMETER TO AH

OUTPUT THE COMMAND

SECOND SPEC [FY BYTE

GET PARAMETER TO AH

OUTPUT THE COMMAND

POP ERROR RETURN

VAR I OUS CLEANUPS

GET SAVED AL TO BL

PUT BACK FOR RETURN

DR POP ERR:

POP

DR_ERR:

OR "

01 SK_RESET

..

ex

ClDSKETTE STATUS,BAD NEC

SHORT RESBAC -

ENDP

CLEAR STACK

SET ERROR CODE

RETURN FROM RESET

I - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - --- - - - - - - - - - - - - - - - - - - - - - - -­

I DISK_STATUS: DISKETTE STATUS.

; ON ENTRY: AH I STATUS OF PREVIOUS OPERATiON

, ; ON EXIT:

- -

-

-

----

-

-----AH. ClDSKETTE STATUS. CY REFLECT STATUS OF PREVIOUS OPERATION.

- - -

----

- - - - -

-::

- - - - -

-

- - - - - - - - - - - - - - -

---

- - - --- - -- - - - - -­

DISK STATUS PROC NEAR

MOV 'lIDSKETTE STATUS,AH PUT BACK FOR SETUP END

VAR IOUS CLEANUPS CALL SETUP END

MOV

MOV

BX,SI

AL,BL

GET SAVED AL TO BL

PUT BACK FOR RETURN

,-

RET

- - - - ----

- -

ENDP

- - - - - - - - ----------------------- - --------- - - - - -- --

---------------­

DISK_READ: DISKETTE READ.

ON ENTRY: 01 : DRIVE.

S I-H I : HEAD.

S I-LOW : • OF SECTORS

E5 I 8UFFER SEGMENT

[BP] 1 SECTOR'

[BP+ I] : TRACK #

[8P+2] : BUFFER OFFSET

ON EXIT:

~ ~~;

CIIDSKETTE_STATUS. CY REFLECT STATUS OF OPERATION

-

~~;~

-

- - - - -

-

;~~~

--

- -

~~~~

- - - - - - - - - - - - - - - -

-

- - - - - - - - - -

-

-

- -

--

- - - - -

- - - - - - - - - -

-­

AND

MOV

CALL

.MOTOR STATUS,OlllllliB ; INDICATE A READ OPERATION

AX, OE646H I AX :::: NEC COMMAND. DMA COMMAND

RD_WR_VF ; COMMON READtWRITE/VERIFY

;

RET

01 SK_READ

;

- -

---

- -

------

I DISK_WRITE:

ENDP

- - - -

----

- - - - - - - - - -

DISKETTE WRITE.

-

- - - - - - - - - - - - - - - - - - - - - - - -- - - - - - - -­

ON ENTRY: 01 : DRIVE.

S I-HI : HEAD #

SI -LOW 1

# OF SECTORS

ES

[BP]

: SUFFER SEGMENT

: SECTOR.

[BP+ I] : TRACK.

[BP+2] , BUFFER OFFSET

ON EX[T:

~ ~ ~~ -;~~;~-

- -

'lIDSKETTE_STATUS, CY REFLECT STATUS OF OPERATION

---

~~~~

-

---~~~~---------------

- - - - - - - - - - - - - - - - - - - - ---------------­

MOV AX. OC504AH , AX :::: NEC COMMAND, DMA COMMANO

5-100 DISKETTE

IBM Person"l Computer MACRO Assembler

DSKETTE - 06/10/85 DISKETTE BIOS

VerSion 2.00

426 010380 OE 003F R 80

421 0108 E8 035C R

428 0 I 08 C3

429 0 I OC

430

431

432

434

435

436

431

438

435

440

441

442

443 0 I OC

444 OIOC 80 26 003F R 7F

445 0111 B8 E642

446 0114 E8 035C R

447 0117 C3

448 0118

449

450

451

452

453

454

455

456

457

458

459

460

461

462 0118

463 0118 E8 02C8 R

464 OIIB E8 03CE R

465 OIIE 80 OE 003F R 80

466 0123 E8 0416 R

461 0126 7231

468 0128 E8 0451 R

469 012B 80 4A

470 0120 E8 0471 R

471 0130 7220

472 0132 84 40

473 0134 E8 04C7 R

474 0131 88 015F R

475 013A 50

476 0138 82 03

477 0130 E8 06CC R

478 0140 E8 0780 R

419 0143 B2 04

480 0145 E8 06CC R

481 0148 E8 07BO R

482 014B 82 01

483 0140 E8 06CC R

484 0150 E8 0780 R

485 0153 B2 08

486 0155 E8 06CC R

481 0158 E8 0180 R

488 0158 58

489 015C E8 0530 R

490 015F

491 015F E8 02EE R

492 0162 E8 0620 R

510

511

512

513

514

515

516

517

518

519

520

493 0165 8B DE

49401678AC3

495 0169 C3

496 016A

497

498

499

500

501

502

503 016A

504 016A 8B C6

505 016C B4 01

506 016E 88 26

501 0112 F9

508 0173 C3

509 0114

521

522

523

524

525

526

527

528

529

530

531

532 0174

533 017481 FF 0080

534 0178 72 06

535

536

537

538 017A 8B C6

539 0 17C B4 0 I

1-5

06-10-85

OR

CALL

RET

DISK_WRITE

DISK VERF:

ON ENTRY:

O'MOTOR STATUS,I00000008 : INDICATE WRITE OPERATION

RD_WR_VF ; COMMON READ/WRITE/VERIFY

ENDP

DISKETTE VER I FY •

Dl

S I-HI

: DR IVE #

: HEAD #

S I-LOW : # OF SECTORS

E5 : BUFFER SEGMENT

[BP] : SECTOR #

[BP+ I] : TRACK #

[BP+2] : BUFFER OFFSET

ON EXIT:

DISK VERF

AND

MaY

CALL

RET

01 SK_ VERF

(lDSKETTE STATUS, CY REFLECT STATUS OF OPERATION

PROC NEAR

(lMOTOR STATUS,OIIIIIIIB ; INDICATE A READ OPERATION

AX,OE642H ; AX

~

NEC COMMAND. OMA COMMAND

RD_WR_VF ; COMMON READ/WRITE/VERIFY

ENDP

DISK FORMAT: DISKETTE FORMAT.

ON ENTRY: DI

51-HI

SI -LOW

E5

[BP]

[BP+ I]

[BP+2]

DRI VE #

HEAD #

# OF SECTORS

BUFFER SEGMENT

SECTOR #

TRACK #

BUFFER OFFSET

ON EXIT:

DISK FORMAT

CALL

CALL

OR

CALL

JC

CALL

MaY

CALL

JC

MaY

CALL

MaY

PUSH

MaY

CALL

CALL

MDY

CALL

CALL

MDY

CALL

CALL

MaY

CALL

CALL

POP

CALL

@DSKETTE_STATUS, CY REFLECT STATUS OF OPERA T I ON

PROC

XLAT NEW

NEAR

FMT INIT

<ltMO'fOR STATUS,I 00000008

MED CHANGE

FM DON

SEND RATE

AL,04AH

DMA SETUP

FM DON

AH704DH

NEC INI T

AX,OFFSET FM DON

AX -

DL,3

GET PARM

NEC-OUTPUT

DL,4

GET PARM

NEC-OUTPUT

DL,7"

GET PARM

NEC-OUTPUT

DL,8

GET PARM

NEC-OUTPUT

AX ­

NEC TERM

TRANSLATE STATE TO PRESENT ARCH.

ESTA8L1SH STATE IF UNESTA8L1SHED

INDICATE WRITE OPERATION

CHECK MED [A CHANGE AND RESET I F SO

MED I A CHANGED, SK I P

SEND DATA RATE TO CONTROLLER

WILL WRITE TO THE DISKETTE

SET UP THE DMA

RETURN WlTH ERROR

ESTABLI SH THE FORMAT COMMAND

INITIALIZE THE NEC

LOAD ERROR ADDRESS

PUSH NEC OUT ERROR RETURN

BYTES / SECTOR VALUE TO NEe

SECTORSITRACK VALUE TO NEC

GAP LENGTH VALUE TO NEC

FILLER BYTE TO NEC

THROW AWAY ERROR

TERMINATE. RECEIVE STATUS. ETC.

CALL

CALL

MaY

XLAT OLD

SETUP END

BX, SI

AL,BL MaY

1-----

RE7

DISK FORMA T ENDP

- - - - - - - - - - - -

TRANSLATE STATE TO COMPATIBLE MODE

VAR I OUS CLEANUPS

GET SAVED AL TO BL

PUT BACK FOR RETURN

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ­

I FNC _ERR :

;

I ON EXIT: <ltDSKETTE_STATUS, CY REFLECT STATUS OF OPERATION

--------------------------------------------------­

FNC ERR PROC NEAR INVALID FUNCTION REQUEST

MOV AX,SI RESTORE AL

MaY

MaY

I NVAL I 0 FUNCT I ON REQUESTED OR I NVAL I 0 DR I VE; SET BAD COMMAND IN

STATUS.

AH,BAD CMD

(lDSKETTE S TA TUS. AH

SET BAD COMMAND ERROR

STORE IN DATA AREA

5TC

RET

FNC_ERR ENDP

SET CARRY I NO I CAT I NG ERROR

01 SK_PARMS:

ON ENTRY:

ON EXIT:

READ DR I VE PARAMETERS.

0 1 : DRIVE #

CLI [BP]

;=

BITS 7 & 6 HIGH 2 BITS OF MAX CYLINDER

BITS 0-5 MAX SECTORS/TRACK

CHI [BP ... I J = LOW 8 BITS OF MAX CYLINDER

BLI [BP+2j

;=

BITS 1-4

=

0

BITS 3-0

;=

VALID CMOS DRIVE TYPE

8H/ [BP+3] ~ 0

DLI[BP+4]

;=

# DRIVES INSTALLED (VALUE CHECKED)

DH/ [BP+5] ::; MAX HEAD #

01/ [BP+6] ::; OFFSET OF 0 I SK BASE

E5

AX

SEGMENT OF DISK BASE o

THE ABOVE I NFORMA T I ON ISS TORED I N THE USERS ST ACK AT

THE LOCATIONS WHERE THE MAIN ROUTINE WILL POP THEM

I NTO THE APPROPR I A TE REG I S TERS BEFORE RETURN I NG TO THE

CALLER.

PROC

0l,80H

01 SK_P2

NEAR

; CHECK FOR FIXED MEDIA TYPE REQUEST

I CONTINUE IF NOT REQUEST FALL THROUGH

F I XED 0 I SK REQUES T FALL THROUGH ERROR

MaY

MOY

: RESTORE AL WITH CALLERS VALUE

; SET BAD COMMAND ERROR IN {AH )

DISKETTE 5-101

[8M Personal Computer MACRO Assembler oSKETTE -06/10/85 DISKETTE 8105

VerSion 2,00

540 017E F9

541 017F C3

5.2

543 0180

544 0180 E8 02C8 R

545 0183 C7 46 02 0000

546 0188 AI 0010 R

547 018B 24 CI

548 0180 B2 02

549 018F 3C 41

550 0191 74 06

551

552 0193 FE CA

553 0195 3C 01

554 0197 75 6A

555 0199

556 0199 88 56 04

551 019C 83 FF 01

558 019F 11 66

559 OIAI C6 46 05 01

560 01 A5 E8 0683 R

561 01A8 12 18

562 OIAA OA CO

563 01AC 74 14

564 a

I AE 3C 03

565 0180 11 10

566

561 0182 88 46 02

568 0185 FE C8

569 01Bl DO EO

510 0189 8A 08

511 a

IB8 32 FF

572 0180 2E: 88 8F 0214 R

513

574 a

IC2

575 0lC2 8A 85 0090 R

576 0lC6 A8 10

577 0lC8 75 08

578 OICA 80 lE 02 00

579 0 ICE 74 37

580 0100 E8 lC

561

582 0102

583 010224 CO

584 0104 2E: 88 OE 0216 R

585 0109 3C 80

58601087511

567

588 0100 2E: 88 OE 0214 R

589 01E2 F6 85 0090 R 01

590 0lE7 74 05

591

592 0lE9 2E: 88 OE 0218 R

593 01 EE

594 OlEE 89 4E 00

595 OIFI 8006 0000 E

596 0lF5 89 46 06

597 01F8 8C C8

598 OIFA

599 OIFA 8E CO

600 0 I FC E8 02EE R

601 OIFF 33 CO

602 0201 F8

603 0202 C3

60.

605

606

607 0203

608 0203 C6 46 04 00

609 0207

610 0207 33 CO

611 0209 89 46 00

612 020C 88 66 05

613 020F 89 46 06

614 0212 E8 E6

615 0214

616

611

616

619 0214 09 27

620 0216 OF 4F

621 0218 09 4F

622 = 021 A

623

62.

625

626

627

626

629

630 021A

631 021A E8 02C8 R

632 0210 8A 85 0090 R

633 0221 OA CO

634 0223 74 13

635 0225 84 0 I

636 0227 A8 01

637 0229 74 02

638 0228 84 02

639

640 0220

641 0220 50

642 022E E8 02EE R

643 0231 58

644 0232 F8

645 0233 88 DE

646 0235 8A C3

647 0231 C3

648 0238

649 0238 32 E4

650 023A E8 F I

651 023C

652

653

1-6

06-10-85

STe

RET

01 SK P2:

CALL

MOV

MOV

AND

MOV eMF

JZ

DEC eMF

DISK_P3:

JNZ

MOV eMF

JA

MOV

CALL

Je

OR

JZ eMF

JA

MOV

DEC

SHL

MOV

XOR

MOV

SET ERROR RETURN CODE

XL AT NEW

WORD-PTR [BP+2) ,0

AX, (IIEQU I P FLAG

AL, I 10000018

OL,2

AL,OIOOOOOIB

D1SK_P3

TRANSLATE STATE TO PRESENT ARCH.

ORIYE TYPE = 0

LOAD EQU I PMENT FLAG FOR # 0 I SKETTES

KEEP 0 I SKETTE DR I YE 8 I TS o [SKETTE DR I YES = 2

2 DRIYES INSTALLED?

I F YES JUMP

OL

AL,000000018 o

[SK_P8

[8P+4] ,DL

01,1

DISK P9

8YTE-PTR[8P+5] ,I

CMOS TYPE

DISK-P4

AL,AL

DISK P4

~7S~~~~tTE-DR_PT)

(2

DISKETTE DRIYES = 1

1 DRIYE INSTALLED 7

IF NO JUMP

STORE NUM8ER OF DR I YES

CHECK FOR YALIO DRIVE

DRIYE INYALID

MAX I MUM HEAD NUM8ER = ,

RETURN DR I VE TYPE IN AL

IF CMOS BAD CHECKSUM ESTABLISHED

TEST FOR NO DRIYE TYPE

JUMP IF SO

> MAXIMUM

IF SO JUMP

[8P+2] ,AL

AL

STORE VALID CMOS DRIYE TYPE

MAKE 0 ORIGIN

ACCOUNT FOR F [ELD WIDTH AL, I

BL,AL

8H,8H

F[NISH MAKING [NDEX POINTER

; CLEAR HIGH ORDER [NDEX

CX,CS:WORO PTR OR_PT[8X); GET MAX TRACK AND SECTOR

DISK P4:

MaY

TEST

JNZ eMF

JZ

JMF

01 SK P5:

AND

MOV eMF

JNE

MoV

TEST

JZ

~~:~~~K5~~ATEIOI)

D[SK P5

8YTE-PTR [BP+2], 0

DISK P9

SHORT 0 [SK_P6

AL, RATE MSK

~~ :=~~~-~~~

CS

=

DR_PT+2

01 SK_P6-

CX,WORO PTR CSloR PT

~~~~=~!

ATE [0 I ] , TRK_ CAPA

MOV

01 SK P6:

MOY

LEA

MOV

MOV

DISK Pl:

MOY

CALL

XOR eLe

RET

CX,WORO PTR CS:DR_PT+4

[8P] ,CX

AX,DISK BASE

{8P+6] ,AX

AX,CS

ES,AX

XLAT OLD

AX,AX

NO DR [YE PRESENT HANDLER

LOAD STATE FOR TH[S DR[VE

CHECK FOR ESTA8L [SHED STATE

GO TO CMOS FOR DR I VE CHECK

CHECK FOR CMOS 8AD ( [NVAL [0

CMOS 8ADI [NYAL[D AND UNESTABL[SHEO

CMOS GOOD AND UNESTA8LISHED; USE CMOS

I SOLATE STATE

GET DR I VE PARAMETERS FOR 1,2 M DR I YE

1 .2M DR[VE ;>

300 OR 500 RATE [S I ,2M DR[YE

GET DR [VE PARAMETERS 360K DR I YE

80 TRACK -,

MUST BE 360

GET DR I VE PARAMETERS

SAVE POINTER IN STACK FOR RETURN

ADDRESS OF 0 I SK 8ASE

SAVE IN STACK

SEGMENT DISK_8ASE [SAME AS THIS ONE)

ES I S SEGMENT OF TA8LE

TRANSLATE STATE TO COMPATIBLE MODE

CLEAR

01 SK P8:

MOV

BYTE PTR I BP+4 ] ,0 CLEAR NUM8ER OF DR [YES

01 SK P9:

XOR

MOV

AX,AX

18P] ,AX

CLEAR PARMS [F NO DR [YES OR CMOS BAD

TRACKS, SECTORSfTRACK = 0

MOV [8P+5],AH

IBP+6],AX

HEAD = 0

MOV

JMF

01 SK_PARMS

01 SK P7

ENoP­

OFFSET TO 01 SK 8ASE = 0

EX [T

,---------------------------------------------------------------- ------------­

; ORIYE PARAMETER TA8LE

,----------------------------------------------------------­

DR_PT 08 09H,027H

; MAX,

~RACKS, SEC~ORS/TRACK ~:~~

DB OFH,04FH

DB 09H,04FH 720K

DR_PTE EQU

; - - - - - -

S ------------------------

; 0 [SK_ TYPE:

--------------------------­

TH I S ROUT I NE RETURNS THE TYPE OF MED I A I NST ALLED,

: ON ENTRY: D[

AH

: oRIYE #

DR[YE TYPE, CY=O ; ON EXIT: b ~~;-~~;~---

CALL

MOV

OR

JZ

MOV

TEST

JZ

PROC NEAR

XLAT NEW

~~:!~SK-STATE[OI

]

NO DRV

AH-;NOCHGLN

AL, TRK CAPA

DT 8ACK

AH-;CHGLN

TRANSLATE STATE TO PRESENT ARCH.

GET PRESENT STATE INFORMATION

CHECK FOR NO DR I VE

NO CHANGE LINE FOR 40 TRACK DR I YE

IS THIS DRIYE AN 80 TRACK DRIYE?

IF NO JUMP

CHANGE LINE FOR 80 TRACK DR I VE

DT 8ACK:

PUSH

CALL

FoF eLe

MoV

MoV

RET

AX

XLAT OLD

AX -

BX,SI

AL,8L

SAVE RETURN VALUE

TRANSLATE STATE TO COMPATI BLE MODE

RESTORE RETURN Y ALUE

NO ERROR

GET SAVED AL TO BL

PUT BACK FOR RETURN

XOR

JMP

~~ :~::~~~:- :~~~-

AH,AH

SHORT DT _8ACK

- --- - ---­

NO DR I YE PRESENT OR UNKNOWN

DISK_CHANGE: THIS ROUT[NE RETURNS THE STATE OF THE DISK CHANGE LINE,

5-102 DISKETTE

IBM p.,.soflal Computer MACRO Assembl.,.

DSKETTE -- 06/10/85 DISKETTE BIOS

Versiofl 2.00

654

655

656

657

658

659

660

023C

" I

662 023C E8

023F 8,1,

02C8 R

85 0090 R •• 3

6 . ' 0243 OA CO

.65

0245 74 19

•••

•• 7

0247 AS

0249 74

01

05

668

••9 024B Ea 08E3 R

670 024E 14 05

671

.72 0250 C6 06 0041 R 06

673

674 0255 E8 02EE R

675 0258 ES 0620 R b7. 025B 8B DE

677 025D 8,1, C3

678 025F C3 b79

6.0 0260

681 02flO 80 OE 0041 R 80

682 0265 EB EE

683 0261

. 8 '

685

686

687

.88

680

690 b91

.92

693

694

695 0267

. 9 . 026 r

E8 02C8 R

697 026A 56

698 026B 8B C6

699 026D 32 E4

700 026F 88 FO

701 0211 80 ,1,5 0090 R OF

702 0216 4E

703 0217 75 07

70' 0279 80 8D 0090 R 90

705 021E EB 37

706

707 0280

708 0280 E8 0416 R

700 0283 80 3E 0041 R 80

710 0288 74 2D

711

7 I 2

713

714

715

028A 4E

028B 75 01

0280 80

0292 E8

8D 0090 R

23

70

7Ib

717 0294

718 0294 4E

719 0295 15 07

720 0297 80 80 0090 R 10

72. 029C EB 19

722

72'

72.

029E

029E 4E

725 029F 75 20

72.

727 02AI FE:> 85 0090 R

09

04

728

729

730

731

02A6 74

02A8 BO

02AA FEo

02AF 75

732

73. 02BI

50

85 0090 R

02

02

734 02B I 80 90

735

736 02B3

737 02B3 08 85 0090 R

738

739 02B7

7.0 02Bl E8 02EE R

7"

02BA E8 0620 R

7.2 02BD 58

7.3 02BE SA C3

7 •• 02CO C3

7.5

7•• oze

1

747 02Cl C6 06 0041 R O'

748 02C6 EB EF

749

750 02CB

751

752

753

754

755

756

757 02C8

758 02C8 S3 FF 01

750 02CB 77 IC

760

761

02CD 80

0202 14

BD 0090 R

16

7.2 0204 8B CF

00

7.3 0206 CO E I 02

76'

0209 ,1,0 008F R

7.5 02DC 02 C8

76b 02DE 24 07

7b7 02EO 80 ,1,5 0090 R F8

'-7

06-10-85

ON ENTRY: DI , DRIVE #

ON EXIT: AH : (lDSKETTE STATUS

00 DISK CHANGE LINE INACTIVE, CY ::: 0

06 DISK CHANGE LINE ACTIVE, CY :. 1

1 ­ - - - ­ - - - ­ - - - - - - - - - - - ­ - - - - ­ - - - - ­ - - ­

DISK CHANGE

CALL

MOV

OR

.JZ

TEST

.JZ

PROC

XLAT NEW

NEAR

AL,.5sK 5TATE[DI

AL,AL­

J

DC NON

AL 7TRK CAPA

SETIT -

TRANSLATE STATE TO PRESENT ARCH.

GET MEDIA STATE INFORMATION

DR I VE PRESENT ?

.JUMP IF NO DRIVE

80 TRACK DR I VE ?

IF SO • CHECK CHANGE LINE

CALL

JZ

SET IT: MDV

FINIS: CALL.

CALL

"OV

"OV

RE7

READ OSKCHNG

FINIS

GO CHECK STATE OF DISK CHANGE LINE

CHANGE LI NE NOT ACT! VE tlOSKETTE_STATUS, MED I A_CHANGE ; I NO I CATE MED I A REMOVED

XL AT OLD

SETUP END

BX.S'­

AL,BL

TRANSLATE STATE TO COMPATIBLE MODE

VAR IOUS CLEANUPS

GET SAVED AL TO BL

PUT BACK FOR RETURN

DEC

JNZ

OR

J"P

-

12 :

OEC

JNZ

OR

J,,"

NOT '2.

DEC

JNZ

TEST

JZ

"OV

TEST

JNZ

ASSUME:

"OV

OR

-

IT

-

IN:

OR

50,

CALL

CALL

POP

MOV

RET

OR

.JMP

PDSKETTE STATUS,TlME OUT

SHORT FINIS -

1 SET TIMEOUT, NO DRIVE

DISK_CHANGE

~

-

­ ----­

- - - -

ENDP

- ­ - -- - - - -

--

- -- -- -

--­ -

- ­ - - - - - - - - - - - - -

-----­ --­ -------

- - -­

THIS ROUTINE IS USED TO ESTABLISH THE TYPE OF MEDIA TO BE USED

FOR THE FOLLOWING FORMAT OPERATION.

ON ENTRY, S I LOW = DASD TYPE FOR FORMAT

01 : DRIVE'

ON EXIT: .OSKETTE STATUS REFLECTS STATUS t~;~~ ~

AH : PDSKETTE STATUS

CY ::: I IF ERROR

-

~~ ~

------

;~~~

-- -­

~~~~

---------­----------­-----------------------------­

CALL

PUSH

MOV

XOR

MOV

~~g

.JNZ

OR

.JMP

XLAT NEW

S I -

AX,SI

AH,AH

S I ,AX

;~SK_STATE[DI]

.NOT

; TRANSLATE STATE TO PRESENT ARCH.

; SAVE DASD TYPE

; AH

=

? , AL

=

DASD TYPE

1 AH = 0 • AL = DASD TYPE

I S I = DASD TYPE

MED_D~T~~~~KS~~~+~~673~~~

MEDiA

C~E~~

I e~ATE

NOT 320 I BYPASS IF NOT

POSK_STATE[DI] ,MED_DET+RATE_250 : SET TO 320/360

SHORT SO

NOT 320:

CALL

CMP

JZ

MED CHANGE

OD5KETTE STATUS,TIME OUT

SO -

; CHECK FOR TI ME_OUT

1FT I ME OUT TELL CALLER

SI CHECK FOR 320/360K IN 1.2M DRIVE

NOT 320 12 • BYPASS I F NOT

11 ,MED_DET+DBL_STEP+RATE_300 ; SET STATE

51

FS_ERR

POSK_STATEIDI J ,DRV_DET

ASSUME

AL .MED DET+RATE 300

OoDSK STATE[D I

J

.FMT CAPA oR_I'f_IN -

XLAT OLD

SETUP END

BX -

AL,BL

CHECK FOR SET DASD TYPE 04

BAD COMMAND EXIT IF NOT VALID TYPE

DR I VE DETERM 1 NED ?

IF STILL NOT DETERMINED ASSUME

MULTIPLE FORMAT CAPABILITY 7

IF 1.2 hi THEN DATA RATE 300

SET UP

; OR IN THE CORRECT STATE

TRANSLATE STATE TO COMPATIBLE MODE

VARIOUS CLEANUPS

GET SAVED AL TO BL

PUT BACK FOR RETURN

FS_ERR:

"OV

J"P

ODSKETTE STATUS, BAD CMD

SHORT SO­ -

UNKNOWN STATE,BAD COMMAND

FORMAT_SET

- - ­

ENDP

------------------­

; XLAT NEW: TRANSLATES DISKETTE STATE LOCATIONS FROM COMPATIBLE MODE TO

; NEW ARCH I TECTURE.

; ON ENTRY;

;-­

- -- ----

XLAT NEW

0 1 : DRIVE --

- - - - - - ­ - -

-­

-

-­ -------­

- -

­ -----

- ­ - - - - - - - - - -

-----------­ -----

- - - -

-­

PROC NEAR ;

CMP

.JA

5~P

01,1

XN OUT

~gs~E~TATE[DI]

,0

I VALID DRIVE?

; IF INVALID BACK

;

7~ ~~I~~I~E

ATTEMPT DETERMINE

MOV

SHL

MDV

ROR

AND

AND cx70 I

CL,2

AL, OHF CNTRL cx = DR I VE NUMBER

CL

=

SHIFT COUNT, A=O, 8=4

DR I VE 1 NFORMA T I ON

AL,CL 1 TO LOW NIBBLE

AL.DRV DET+FMT CAPA+TRK CAPA ; KEEP DRIVE BITS

.DSK_Si'ATE[OI17NOT DRV_DET+FMT_CAPA+TRK_CAPA

DISKETTE 5-103

IBM Personal Comput.er MACRO Assembler

DSKETTE -- 06/10/85 0 I SKETTE 810S

Ver:llon 2.00

7.8 02E5 08 85 0090

7 •• 02E9

770 02E9 C3

771

772 02EA

773 02EA E8 08ED R

774 02ED C3

77.

77.

777

778

02EE

77.

780

781

782

783 02EE

R

784 02EE 83 FF 0 I

785 02Fl

786

77 68

02F3 80 80 0090 R

787

788

78.

02F8 74 61

7'0

791 02FA 88 CF

792 02FC CO El 02

793 02FF 84 02

794 0301 02 CC

795 0303 84 26 008F R

796 0307 75 16

00

7'7

7.8

7 • •

800 0309 84 07

801 0308 02 CC

802 0300 F6 04

803 030F 20 26 008F R

804

805

80.

807 0313 8A 85 0090 R

808 03172407

809 0319 02 C6

810 031808 06 008FR

811

8>2

813

814 031F

815 031F 8A A5 0090 R

816 0323 8A FC

817 0325 80 E4 CO

818 032880 02

819

820

821

032A 80 FC 00

0320 74 IC

032F 80 01

822 0331 80 FC 40

823 0334 75 09

824 0336 F6 C7 20

825 0339 75 10

82.

827 0338

828 0338 BO 07

829 0330 E8 13

630

831 033F

832 033F 80 00

833 0341 80 FC 80

834 0344 75 F5

835 0346 F6 C7 0 I

836 0349 75 FO

837

836 0348

839 0348 F6 C7 10

840 034E 74 02

841

842

0350 04 03

843 0352

844 0352 80 A5 0090 R F8

845 0357 06 85 0090 R

846 0358

847 0358 C3

848 035C

84.

850

851

852

653

654

655

85.

857 035G

858 035G 50

659 0350 E8 02G8 R

860 0360 E8 039B R

861 03b3 58

662

863 0364

864 03b4 50

865 03b5 E8 0416 R

86&

867

0368 56

0369 72 21

868 03b8 50

669 03bG ES 0451 R

870

871

03bF E8 063A R

0372 72 12

872 0374 58

873 0375 50

874 0376 E8 0471 R

875

87b

871

0379 58

037A 72 16

037C 50

87e 0370 E8 04C7 R

679 0380 E8 04EG R

880 0383 E8 0530 R

881

1-6

06-10-85

I UPDATE DRIVE STATE

XN_OUT:

OR

RET c-DSK_STATE[DI] ,AL

DO_DET:

CALL

RET

DR I VE_DET TRY TO DETERM I NE

.

XLAT NEW

- - - -------­

ENDP ---------­

- ­

-------------­

------------------­ - -

-­

- - - --­ - ---­ -­

; XLAT OLD: TRANSLATES DISKETTE STATE LOCATIONS FROM NEW ARCHITECTURE TO

COMPATI8LE MODE.

; ON ENTRY:

~~~~

-

~~~

-

01 : DRIVE

------

-;~~~--- ~~~~----

- --------­ -

- -

------­ -

----­

CMP

JA

S~P

01, I

XO OUT

~g~~UiTATE[DI],O ;

;

; VALID DRIVE '!

; IF INVALID 8ACK

NO DRIVE '!

IF NO DRIVE TRANSLATE DONE

; - - - - ­

TEST FOR SAVED DRIVE INFORMATION ALREADY SET

MOV

SHL

MOV

ROR

TEST

"NZ

CX,DI

CL,2

AH,FMT CAPA

AH,CL -

4!OHF CNTRL, AH

SAVE_SET

CX

=

DR I VE NUM8ER

CL :: SHIFT COUNT, A::O, 8::4

LOAD MULTIPLE DATA RATE 81T MASK

ROTATE BY MASK

MULTIPLE-DATA RATE DETERMINED"

IF SO, NO NEED TO RE-SAVE

ERASE DRIVE BITS IN IPHF_CNTRL FOR THIS DRIVE

MDV

ROR

NOT

AND

AH,DRV DET+FMT CAPA+TRK CAPA

AH,CL -

; MASK TO KEEP

- , FIX MASK TO KEEP

AH

.HF_CNTRL,AH

; TRANSLATE MASK

; KEEP 81TS FROM OTHER DRIVE INTACT

ACCESS CURRENT DRIVE BITS AND STORE IN ~HF _CNTRL

MOV

AND

ROR

OR

AL.~DSK STATE[DI] ; ACCESS STATE

AL.DRV 15ET+FMT CAPA+TRK CAPA ; KEEP DRIVE 81TS

AL,CL -

Il'HF_CNTRL.AL

; FIX FOR THIS DRIVE

; UPDATE SAVED DRIVE STATE

TRANSLATE TO COMPATI81LITY MODE

SAVE SET:

MOV

MOV

AND

MDV

CMP

"Z

MOV

CMP

JNZ

TEST

JNZ

AH,~DSK

8H,AH -

STATEIOlj

AH,RATE MSK

AL,MIDIU

AH,RATE 500

TST DET­

AL,M30lU

AH,RATE 300

CHK 250­

BH,D8L STEP

TST_DET

UNKNO:

MOV

"MP

CHK 250 I

MOV

CMP

"NZ

TEST

JNZ

TST DET:

TEST

JZ

AOO

AL,MEO UNK

SHORT "AL_SET

AL,M3D3U

AH.RATE 250

UNKNO -

8H, TRK CAPA

UNKNO -

BH,MED DET

AL SET­

AL73

ACCESS STATE

TO 8H FOR LATER

KEEP ONLY RATE

AL '" 1.2 IN 1.2 UNESTA8LISHEO

RATE 500 .,

JUMP IF 1.2 IN 1.2

AL

=

360 IN 1.2 UNESTABLISHED

RATE 300 ?

IF SO FALL THRU

CHECK FOR DOUBLE STEP

MUST 8E 360 I N 1.2

NONE OF THE A80VE

PROCESS COMPLETE

AL

=

360 IN 3bO UNEST A8L I SHED

RATE 250 ?

I F SO FALL THRU

80 TRACK CAPABILITY ?

IF SO JUMP, FALL THRU TEST DET

DETERM I NED '!

I F NOT THEN SET

MAKE DETERMINED/ESTA8LISHED

AND

DR

XLAT _ OLD

RET

ENDP

RD_WR_VF : COMMON READ, WRITE AND VERIFY, MAIN LOOP FOR STATE RETRIES.

; ON ENTRY:

;

AH : READ/WR I TE/YER I FY DMA PARAMETER

AL : READ/WRITE/VERIFY NEC PARAMETER

; ON EXIT:

~~-;~

4!ODSKETTE_STATUS, CY REFLECT STATUS OF OPERATION

~;------ --~~~~---- ~~~~

-

-­

----­ ---­

-­

-

-----------­

-­ -----­ - - ---­

-­

PUSH

CALL

CALL

POP

AX

XLAT NEW

SETUP STATE

AX -

SAVE DMA, NEC PARAMETERS

TRANSLATE STATE TO PRESENT ARCH.

STATE INITIALIZATIONS

RESTORE DMA,NEC PARAMETERS

DO AGAIN:

PUSH

GALL

POP

"C

PUSH

GALL

CALL

"C

POP

PUSH

CALL

POP

"C

PUSH

CALL

CALL

CALL

AX

MEO CHANGE

AX -

RWV END

AX -

SEND RATE

SETUP D8L

CHK RET

AX -

AX

OMA SETUP

AX -

RWV BAC

AX -

NEC INIT

RWV-COM

NEC::::TERM

SAVE READ/WRITE/VERIFY PARAMETER

MED I A CHANGE AND RESET I F CHANGED

RESTORE READ/WRITE/VERIFY

MEDIA CHANGE ERROR OR TIME-OUT

SAVE READ/WRITE/VERIFY PARAMETER

SEND DATA RATE TO NEC

CHECK FOR DOUBLE STEP

ERROR FROM READ ID, POSS I BLE RETRY

RESTORE NEC, DMA COMMAND

SAVE NEC COMMAND

SET UP THE OMA

RESTORE NEC COMMAND

CHECK FOR DMA BOUNDARY ERROR

SAVE NEC COMMAND

INITIALIZE NEe

DP CODE COMMON TO READ/WRITE/VERIFY

TERMINATE, GET STATUS, ETC.

5-104 DISKETTE

882 0386

883 0386 E8 05Bl R

884 0389 58

885 038A 72 08

886

887 038C

888 038C E8 0582 R

889 038F E8 05F3 R

890

891 0392

892 0392 50

893 0393 E8 02EE R

894 0396 58

895 0397 E8 0620 R

896 039A C3

897 039B

898

899

900

901 0398

902 0398 F6 85 0090 RIO

903 03AO 75 2B

904 03A2 88 4080

905 03A5 F6 85 0090 R 04

906 03AA 74 OC

907 03AC BO 00

908 03AE F6 85 0090 R 02

909 0383 75 03

910 03B5 88 8080

911

912 03B8

913 03B8 80 A5 0090 R IF

914 03BD 08 A5 0090 R

915 03CI 80 26 008B R F3

916 03C6 CO C8 04

917 03C9 08 06 008B R

918 03CO

919 03CO C3

920 03CE

921

922

923

924 03CE

925 03CE F6 85 0090 RIO

926 0303 75 3C

927 0305 E8 0683 R

928 0308 72 38

929 03DA FE C8

930 03DC 78 34

931 03DE 8A A5 0090 R

932 03E2 80 E4 OF

933 03E5 OA CO

934 03E7 75 05

935 03E9 80 CC 90

936 03EC EB 1 F

937

938 03EE

939 03EE FE C8

940 03FO 75 05

941 03F2 80 CC \0

942 03F5 EB 16

943

944 03F7

945 03F7 FE C8

941:1 03F9 15 ! 7

947 03F8 F6 C4 04

948 03FE 74 OA

949 0400 F6 C4 02

950 0403 74 05

951 0405 80 CC 50

952 0408 E8 03

953

954 040A

955 040A 80 CC 90

956

957 0400

958 0400 88 A5 0090 R

959

960 0411

961

962

0411 C3

963 0412

964 0412 32 E4

965 0414 EB FT

966 0416

967

968

969

970

971

97.

973

914 0416

915 0416 E8 08E3 R

976 0419 74 34

971 0418 80 A5 0090 R EF

978

979

980

981

982

983 0420 88 CF

984 0422 80 01

985 0424 02 EO

986 0426 F6 DO

987 0428 FA

988 0429 20 06 003F R

969 0420 F8

990 042E E8 06E 1 R .9.

993

994 0431 E8 OOTE R

995 0434 B5 01

IBM Per.sonal Computer MACRO A.s.selllbler

OSKETTE - 06/10/85 DISKETTE BIOS

Vl!!rslon 2.00 1-9

06-' 0-65

CHK RET:

CALL

POP

JC

RETRY

AX

DO_ACiAIN

CHECK FOR. SETUP RETRY

RESTORE READ/WR I TE/VER I FY PARAMETER

CY

=

1 MEANS RETRY

RWV END:

CALL

CALL

DSTATE

NUM_TRANS

ESTABLISH STATE IF SUCCESSFUL

AL

=

NUMBER TRANSFERRED

RWV BAC;

PUSH

CALL

POP

CALL

AX

XLAT OLD

AX -

BAD DMA ERROR ENTRY

SAVE NUMBER TRANSFERRED ,

; TRANSLATE STATE TO COMPATIBLE MODE

I RESTORE NUMBER TRANSFERRED

; VAR I OUS CLEANUPS SETUP_END

RET

RD_WR_VF ENDP

; -

;~~~;=;;~;~;

--

~ ~ ~; ~ ~~ ~ ~~; -;~~~;- ~~~

-

~~D

-

~;;~; ~

----- ----------------- ---- ----­

- - - - - -

- -- - -- - - - - - - - -

--

- - - - - - - - - - - - - - - - - - - ------- - -

---

- -

-

- - - - - - ---

-

- - ----

-­

SETUP STATE

TEST

PROC NEAR

~~~K_STATEIDII.MED_DET MED I A DETERM I NED 7

JNZ

MOV AX,RATE 300-H+RATE 250

NO STATES IF DETERMINED

AH

=

START RATE, AL = END RATE flDSK STATE[DII,DRV-DEl TEST DRIVE?

JZ

MOV

TEST

JNZ

MOV

AX SET DO NOT KNOW DR I VE

AL-;-RATE 500

:~S~E~TATE

I D I

AX:RATE_250-X

SET UP FOR 1.2 M END RATE

J

,FMT_ CAPA

1.2 M ?

JUMP WITH FIXED END RATE

START & EMD RATE

=

250 FOR 360 DRIVE

AND

OR

AND

ROR

OR

:g~~-~i~i~Ig:):~~T RATE_7S~;~~LF~~~~ +oT~~~

OFF THE RATE

"LASTRATE.NOT STRT MSK ; ERASE LAST TO TRY RATE BITS

AL,4 - ; TO OPERATION LAST RATE LOCATION

IlILASTRATE,AL i LAST RATE

J1C:

RET

SETUP_STATE

: ------ - - - ---

ENDP

------------------- --- - -------------------- -- - - -- ------ --------­

: Ft.4T_INIT: ESTABLISH STATE IF UNESTABLISHED AT FORt.4AT TIME.

;~; - I ~ ~ ~ - - - - - - - ;~~~ - - - ~~~; - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ­

-

3~iT :~S~O~TATE[DI].t.4ED-DET

CALL

JC

DEC

JS

MOV

AND

OR

.JNZ

OR

.JMP i :~ ~~D~~T~~~ABLISHED

CMOS TYPE

CL DRV

ALi RETURN DR I VE TYPE IN AL

; ERROR IN CMOS ASSUME NO DRIVE

1 MAKE ZERO ORICiIN

CL DRV

AH-;-IlIDSK STATEIDI]

AH,NOT MED OET+D8L STEP+RATE MSK

AL, AL -

1 NO DRIVE IF AL 0

1 AH = CURRENT STATE

; CLEAR

I CHECK FOR 360

N 360

AH.t.4ED DET+RATE 250

SHORT SKP_STATEi IF 360 WILL BE 0

ESTABLISH MEDIA

SKIP OTHER STATE PROCESSING

DEC

JNZ

OR

J"P

DEC

"NZ

TEST

JZ

TEST

JZ

OR

JMP

ISNT_12;

OR

SKP STATE:

t.40V

FI_OUT:

RET

AL

N 12

AH,MED DET+RATE 500

SHORT SKP_STATE-

AL

CL DRV

AH:ORV DEl

ISNT 12

AH,FMT CAPA

! SNT 12

AH,MED DET+RATE 300

SHORT SKP_STATE-

AH,MED_DET+RATE 250

ODSK_STATE[DI} ,AH

1.2 M DRIVE

..lUMP IF NOT

DEFAULT TO 1 .2M FORMAT

SKIP OTHER STATE PROCESSING

CHECK FOR TYPE 3

NO DR I VE, CMOS BAD

I S DR (VE DETERM I NED

TREAT AS NON 1.2 DRIVE

IS 1.2M

.JUMP IF NOT

RATE 300

CONT INUE

MUST BE RATE 250

STORE AWAY

XOR

"MP

FMT INIT

,--=---------­

MED_CHANGE:

AH,AH

SHORT SKP STATE

ENDP ­

: CLEAR STATE

; SAVE IT

CHECKS FOR MEDIA CHANGE, RESETS MEDIA CHANGE, CHECKS MEDIA

CHANGE ACiA IN.

I

ON EXIT: CY = 1 MEANS lEOlA CHANG~ OR TIMEOUT

IIIDSKETTE STATUS

=

ERROR CODE

1--- - - - - - - - - - - - - - - - - - -::- - - - - - - - - - - - - -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- - - - - - - - - -­

MED CHANGE PROC NEAR

CALL

..lZ

AND

READ DSKCHNG

MED C9

: READ DISK CHANGE LINE STATE

I flDSK_STATE{DI],NOT MED_DET

BYPASS HANOL I NG 0 I SK CHANGE LINE

; CLEAR STATE FOR THIS DRIVE

TH! S SEQUENCE ENSURES WHENEVER A 0 I SKETTE I S CHANGED THAT

ON THE NEXT OPERATION THE REQUIRED MOTOR START UP Tlt.4E WILL

BE WA I TED. (DR I VE MOTOR MA Y GO OFF UPON DOOR OPEN I NG I .

MOV

MOV

5HL

NOT

STI

CALL

CX,OI

AL, ,

AL,CL

AL

IlIMOTOR_STATUS,AL

MOTOR_ON

;CL=DRIVE#

; MOTOR ON BIT MASK

; TO APPROPRIATE POSITION

: KEEP ALL BUT MOTOR ON

; NO INTERRUPTS

I TURN MOTOR OFF INDICATOR

; I NTERRUPTS ENABLED

; TURN MOTOR ON

TH I S SEQUENCE OF SEEKS I S USED TO RESET 0 I SKETTE CHANGE 5 I GNAL

CALL

"OV

01 SK RESET

CH,oTH

; RESET NEC

; MOVE TO CYL I NDER 1

DISKETTE 5-105

IBM Pereonel Computer MACRO Aseembler

DSKETTE -06/10/85 0 I SKETTE 8 I OS

Version 2.00

996 0436 E8 01DE R

991 0439 32 EO

998 0438 EB 010E R

999 043E C6 06 0041

1000

100 I 0443 E8 08E3 R

1002 0446 14 05

1003

1004 0448 C6 06 0041

1005 0440

1006 0440 F9

1001 044E C3

1008 044F

1009 044F F8

10 I 0 0450 C3

101 I 0451

1012

1013

1014

R

R

10150451

1016 0451 BA 26 0088 R

1017 0455 8A 85 0090 R

1018 0459 25 COCO

06

80

1019 045C 3A C4

1020 045E 14 10

1021

1022 04bO 80 2b 008B R 3F

1023 0465 08 06 008B R

1024 0469 CO CO 02

1025 046C SA 03Fl

1026 046F EE

1021

1028 0410

1029 0470 C3

1030 0471

1031

1032

1033

1034

1035

1036

1031

1038 041 I

1039 041 I

1040 0412 E6 OC

1041 0474 EB 00

1042 0416 E6 08

1043 0418 BC CO

1044 047A CI CO 04

1045 0410 8A EB

1046 047F 24 FO

1041 0481 03 46 02

1048 0484 73 02

1049 0486 FE C5

1050 04M

1051 0488 50

1052 0489 E6 04

1053 0488 E8 00

1054 0480 8A C4

1055 048F E6 04

1056 0491 8A C5

1051 0493 EB 00

1058 0495 24 OF

1059 0497 E6 81

1060

106 I

1062

1063 0499 88 C6

1064 0498 86 C4

1065 0490 2A CO

1066 049F D1 EB

1061 04AI 50

1068 04A2 82 03

1069 04A4 E8 06CC R

1010 04A1 8A CC

1011 04A9 58

1012 04AA 03 EO

1013 04AC 48

1014 04AO 50

1015 04AE E6 05

1016 0480 EB 00

1011 04B2 8A C4

1078 0484 E6 05

10190486 F8

1080 0481 59

1081 0488 58

1082 04B9 03 CI

1083 0488 80 02

1084 0480 E6 OA

1085 04BF 13 05

1086 04C1 C6 06 0041

1081 04C6

1088 04C6 C3

108904C1

1090

1091

1092

1093

1094

1095

1096

1091

1098 04C7

1099 04Cl 50

1100 04C8 E8 06EI R

I 101

1102

1103

1104 04CB 8A 6E 01

I 105 04CE E8 alOE R

11060401 58

1101040272 17

1 108 0404 8B 04E8 R

1109 0401 53

R 09

I-I a

06-10-85

CALL

XOR

CALL

MOV

CALL

JZ

MOV

STC

RET

SEEK

CH, CH

SEEK

; I SSUE SEEK

: MOVE TO CYLI NOER 0

; I SSUE SEEK

<IIOSKETTE_STATUS,MEOIA_CHANGE ; STORE IN STATUS

READ OSKCHNG

MEO_C8

CHECK MEO I A CHANGED AGA I N

IF ACTIVE, NO DISKETTE, TIMEOUT

(lOSKETTE_STATUS,TIME_OUTI TIMEOUT IF DRIVE EMPTy

MEO I A CHANGED, SET CY

I NO MED I A CHANGED, CLEAR CY CLC

RET

: MEO _CHANGE

-

~~~~~;;;:~ ~

;~~~=~~~~--

----

ENDP

~~~~~

-;~~~-

-

~~ ~ ~ ~~ ~~

-

~~~~~~~-;~

--~~~;-------

~~~ ---~~~~ ~ ~~~ -;~ ~~

----------

MOV

~~~

CMP

..IE

AH.~LASTRATE

~i:;~~~-~~~!~(DI]

AL,AH -

C S OUT

GET LAST DATA RATE SELECTED

~~~p R~~~

'I'

S~~~~ ~~T~H~~ ~~~~E

COMPARE TO PREVIOUSLY TRIED

IF SAME, NO NEW TRANSFER RATE

ANa

OR

ROL

MOV

OUT

IDLASTRATE,NOT SEND MSK

OLASTRATE,AL -

AL,2

OX,03F7H

OX,AL

ELSE CLEAR LAST RATE ATTEMPTED

SAVE NEW RATE FOR NEXT CHECK

MOVE TO BIT OUTPUT pas I T IONS

OUTPUT NEW DATA RATE

C S OUT:

RET

SEND_RATE

;

- - -

----------------

; DNA_SETUP:

ENOP

- - - --- - - - -------------------- -- - - -

- -

------ -

-

-------------­

THIS ROUTINE SETS UP THE OMA FOR READ/WRITE/VERIFY OPERATIONS.

I

I ON ENTRY:

;

; ON EXIT: b~~-~ETUP

Cl!

OUT

JMP

OUT

MOV

ROL

MOV

AND

ADO

JNC

INC

..133:

PUSH

OUT

J"P

"OV

OUT

"OV

J"P

AND

OUT

AL '" OMA COMMAND

<ltOSKETTE_STATUS, CY REFLECT STATUS OF OPERATION

PRoe

,.2

DNA+ II ,AL

AX,ES

AX,4

CH,AL

AL,I1110000B

AX, (BP+2]

J33

CH

OMA"4,AL

"2

AL,AH

OMA+4,AL

AL,CH

"2

AL,OOOOIIIIB

081H,AL

NEAR o

I SABLE I NTERRUPTS OUR I NG OMA SET-UP

SET THE FIRST/LAST F/F

WAIT FOR I/O

OUTPUT THE MODE BYTE

GET THE ES VALUE

ROTATE LEFT

GET HIGHEST NI8BLE OF ES TO CH

I ZERO THE LOW NIBBLE FROM SEGMENT

; TEST FOR CARRY FROM ADD I T I ON

I CARRY MEANS HIGH 4 BITS MUST BE INC

SAVE START ADDRESS

OUTPUT LOW ADDRESS

WAIT FOR I/O

OUTPUT HIGH ADDRESS

GET HIGH 4 BITS

I/O WAIT STATE

OUTPUT HIGH 4 BITS TO PAc.E REGISTER

OETERM I NE COUNT

MOV

XCHG

SUB

SHR

PUSH

MOV

CALL

"OV

POP

SHL

OEC

PUSH

OUT

J"P

"OV

OUT

ST.

POP

POP

AOO

MOV

OUT

"NC

MOV

AX,S!

AL,AH

AL,AL

AX,I

AX

OL,3

GET PARM

CL,AH

AX

AX,CL

AX

AX

AL = # OF SECTORS

AH '"

AL

# OF SECTORS

=

0, AX = # OF SECTORS· 25.

AX = # SECTORS • 128

SAVE # OF SECTORS • 128

GET BYTES/SECTOR PARAMETER

SHIFT COUNT (0=128, 1=256 ETC)

AX

=

# OF SECTORS • 128

SH 1FT BY PARAMETER VALUE

; - 1 FOR OMA VALUE

SAVE COUNT VALUE

DMA+5,AL

$'2

AL,AH

LOW BYTE OF COUNT

WAIT FOR I/o

OMA+5,AL HIGH 8YTE OF COUNT

RE-ENABLE INTERRUPTS

RECOVER COUNT VALUE CX

AX

AX, CX

AL,2

OMA+ j

O. AL

RECOVER ADDRESS VALUE

ADD. TEST FOR 64K OVERFLOW

MODE FOR 8237

I NIT I AL I ZE THE 0 I SKETTE CHANNEL

NO BAD ; CHECK FOR ERROR

ODSKETTE_STATUS,DMA._80UNOARY ; SET ERROR

; CY SET BY ABOVE IF ERROR

;

;

.

---- - - - ---- -

- -

ENOP

----- - - -------- ---- - - -- - - - - - - --- - - ---------- - - - - - - - - - - - - ----­

; NEC_INIT: THIS ROUTINE SEEKS TO THE REQUESTED TRACK AND INITIALIZES THE

NEC FOR THE READ/WRITE/VERIFY/FORMAT OPERATION.

; ON ENTRY:

;

AH : NEC COMMAND TO BE PERFORMED

; ON EXIT: IltOSKETTE_STATUS. CY REFLECT STATUS OF OPERATION

~~~-;~;;:--------;;~~----~~~;---------------------------------------------------

PUSH

CALL

AX

MOTOR_ON

SAVE NEC COMMAND

TURN MOTOR ON FOR SPECIFIC DRIVE

; - - - - DO THE SEEK OPERATION

MOV

CALL

POP

JC

"OV

PUSH

CH, (BP+ I]

SEEK

AX

ER 1

BX~OFFSET

ER I

BX -

CH '" TRACK #

MOVE TO CORRECT TRACK

RECOVER COMMAND

ERROR ON SEEK

LOAD ERROR ADDRESS

PUSH NEC_OUT ERROR RETURN

5-106 DISKETTE

IBM Person.] Computer MACRO Assembler

OSKETTE -06/10/85 DISKETTE BIOS

Vers,on 2.00

I I 10

1111

112

113 0408 E8 07BO R

114040888 C6

I 15 0400 88 OF

I 16 04DF CO E4 02

I I 1 04E2 80 E4 04

I 18 04E5 OA E3

119 04E7 E8 0180 R

I 120 04EA 58

1121 04E8

1122 04E8 C3

112304EC

1124

1125

1126

121

126

129 r 30 04EC

131 04EC 88 052F R

132 04EF 50

133 04FO 8A 66 01

134 04F3 E8 0180 R

135 04F6 8B C6

136 04F8 E8 0180 R

137 04F8 8A 66 00

138 04FE E8 0180 R

139 0501 82 03

1140 ('503 E8 06CC R

1141 0506 E8 0180 R

114205098204

1 143 0508 E8 06CC R

1144 050E E8 01BO R

11450511 8A 85 0090 R

1146 0515 84 IB

11410511 24 CO

1148 0519 74 08

1149 0518 84 23

1150 0510 FE C8

1151 051F 74 02

1152

11530521 842A

1154 0523

1155 0523 E8 0780 R

115605268206

1151 0528 E8 06CC R

158 0528 E8 0180 R

159 052E

160 052F

58

161 052F C3

162 0530

163

164

165

166

161

166

169 0530

110

111

112

113 0530 56

1140531 E8 081C R

175 0534 9C

116 0535 E8 08A4 R

111 0538 12 45

118 053A 90

1119053812 3A

1 180

1181

1182

1183 0530 FC

1184 053E 8E 0042 R

11850541 AC

1186054224 CO

1181 0544 14 31

11880546 3C 40

11890548 15 27

I 190

1191

I 192

1193 054A AC

I 194 0548 DO EO

1195 05408404

1196 054F 12 22

11910551 CO EO 02

1198055484 10

119905561'218

1200 0558 DO EO

1201 OSSA 84 08

1202 055C 72 15

1203 055E CO EO 02

1204 0561 84 04

1205 0563 72 OE

1206 0565 DO EO

1201' 0561 84 03

1208 0569 72 08

1209 0568 DO EO

1210 056084 02

1211 056F 72 02

1212

1213

12140511

12150511 84 20

1216 0513

1211 0513 08 26 0041 R

1218 0517

12190517 80 3E 0041 R 01

1220 051C F5

1221 0510 5E

1222 051E C3

1223

1-11

06-10-85

; - - - - SEND OUT THE PARAMETERS TO THE CONTROLLER

CALL

"OV

"OV

SAL

AND

OR

CALL

POP

NEC OUTPUT

AX,SI eX,DI

AH,2

AH,OOOOOl008

AH,BL

NEC OUTPUT

BX -

OUTPUT THE OPERAT I ON COMMAND

AH

BL

=

HEAD #

=

DRIVE #

MOVE IT TO BIT 2

ISOLATE THAT BIT

OR I N THE DR I VE NUMBER

FALL THRU CY SET IF ERROR

THROW AWAY ERROR RETURN

RET

NEC_INlT

- -

- - ----- -

; RWV_COM:

;

ENOP ---------

--- - - ----- -

--­

THIS ROUTINE SENDS PARAMETERS TO THE NEC SPECIFIC TO THE

READ/WRITE/VERIFY OPERATIONS.

;

; ON EXIT:

~;~

~OSKETTE_STATUS, CY REFLECT STATUS OF OPERATION

-

;~~-;~~;----~~~~

--------- ------ - -- - - --

-

-

-

- - - --- - - - - - -

- -

--------- -

- - - ---- -­

MOV

PUSH

MOV

CALL

MOV

CALL

MOV

CALL

MOV

CALL

CALL

MOV

CALL

CALL

MOV

MOV

AND

JZ

MOV

DEC

JZ

AX,OFFSET ER 2

AX -

AH, [BP+ 1]

NEC OUTPUT

AX,SI

NEC OUTPUT

AH,Tep]

NEC OUTPUT

DL,3

GET PARM

NEC-OUTPUT

DL.4

GET PARM

NEC-OUTPUT

AL,iOSK STATE[OI]

AH,OIBH

AL. RA TE MSK

R 15 -

AH,023H

AL

RI5

LOAD ERROR ADDRESS

PUSH NEC OUT ERROR RETURN

OUTPUT TRACK #

OUTPUT HEAD #

OUTPUT SECTOR #

8YTES/SECTOR PARAMETER FROM BLOCK

• TO THE NEC

OUTPUT TO CONTROLLER

EaT PARAMETER FROM BLOCK

• TO THE NEC

OUTPUT TO CONTROLLER

GET DRIVE STATE VALUE

1.2/1.2 DRIVE GAP LENGTH

STRIP OFF HIGH BITS

IF SO JUMP

320.360' 1 .2 OR I VE GAP LENGTH

CHECK FOR 320 MEDIA IN 1.2 DRIVE

IF SO JUMP

AH,02AH 360/360 DRIVE GAP LENGTH

R15;

CALL

"OV

CALL

CALL

POP

NEC OUTPUT

OL.6

GET PARM

NEC-OUTPUT

AX -

DTL PARAMETER FROM BLOCK

TO THE NEC

OUTPUT TO CONTROLLER

THROW AWAY ERROR EXIT

RET

RWV_COM ENDP

----------­ j

NEC_TERM: TH I S ROUT I NE WA ITS FOR THE OPERAT! ON THEN ACCEPTS THE STATUS

FROM THE NEC FOR THE READ I WR I TE!VER I FY ! FORMA T OPERA T! ON.

; _

~N _:~~~~

______

~~:~:~~:-=:~~~~::_:~ _~::~::::~ _:~

A

~~:

_

~~

_

~~:~~~ ~~~

_______________ _

NEC _TERM PROC NEAR

; - - - - -

; - - - - -

LET THE OPERAT ION HAPPEN

PUSH

CALL

PUSHF

CALL

JC

POPF

JC

S 1

WAIT INT

RESULTS

SET_END_POP

SAVE HEAD #. # OF SECTORS

WA I T FOR THE INTERRUPT

GET THE NEC S T A TUS

SET_END I LOOK FOR ERROR

CHECK THE RESULTS RETURNED BY THE CONTROLLER

CLO

"OV

LOOS

AND

JZ

C"P

JNZ

S I ,OFFSET (\IoNEC STATUS

(\INEC STATUS -

AL,lToOOOOOB

SET END

AL,Ol0000008

JI6

ABNORMAL TERMINAT!ON, FINO OUT WHY

SET THE CORRECT 0 I RECT I ON

POINT TO STATUS FIELD

GET STO

TEST FOR NORMAL TERMINATION

TEST FOR ABNORMAL TERMINATION

NOT ABNORMAL, BAD NEe

LOOS

SAL

"OV

JC

SAL

"OV

JC

SAL

MOV

JC

SAL

"OV

JC

SAL

"OV

JC

SAL

"OV

JC

!1'NEC STATUS

AL, I

AH, RECORD NOT FND

JI9 - ­

AL,2

AH,BAD eRe

J19

AL,I

AH,BAD DMA

J19

AL,2

AH, RECORD NOT FNO

JI9 - ­

AL, I

AH, WR I TE PROTECT

JI9

AL, I

AH, B ....O AODR MARK

JI9 -

NEC MUST HAVE FAILED

: GET STI

; TEST FOR EDT FOUND

TEST FOR OMA OVERRUN

TEST FOR RECORD NOT FOUND

TEST FOR WR I TE_PROTECT

TEST MISSING ADDRESS MARK

JIB:

J 19:

OR

SET END:

CMP

C"C

POP

RET

«IDSKETTE_STATUS, AH

¢IDSKETTE_STATUS, I SET ERROR COND I T I ON

RESTORE HEAD' • • OF SECTORS

DISKETTE 5-107

r8M Personal Computer NACRO ASl!lembler

OSKETTE -06/10/85 DISKETTE 810S

Verl!llo" 2.00

1224 057F

1225 057F 90

1226 0580 E8 F5

1227 0582

1228

1229

1230

1231 0582

1232 0582 80 3E 0041 R 00

1233 0587 75 27

1234 0589 80 80 0090

1235 058E F6 85 0090

1236 0593 75 18

1237 0595 8A 85 0090 R

1238 0599 24 CO

10

04

1239 0598 3C 80

1240 0590 75 OC

1241 059F 80 A5 0090 R FD

1242 05A4 80 80 0090 R 04

1243 05A9 E8 05

1244

1245 05A8

1246 05A9 80 80 0090 R 06

1247

1248 0590

1249 0580 C3

12500581

1251

1252

1253

1254

1255

1256

1257 0581

1258 0581 80 3E 0041 R 00

! 259 0586 74 39

1260 0588 80 3E 0041 R 80

1261 0580 74 32

1262 05BF 8A A5 0090 R

1263 05C3 F6 C4 10

1264 05C6 75 29

1265 05C8 80 E4 CO

1266 05C8 8A 2E 0069

1267 05CF CO C5 04

1268 0502 80 E5 CO

1269 0505 3A EC

1270 0507 74 18

1271

1272

1273

1274

1275

R

1276

1277 0509 eo

FC 01

1278 05DC DO DC

1279 050E 80 E4 CO

1280 05EI 80 A5 0090 R IF

1281 05E6 08 A5 0090 R

1282 05EA C6 06 0041 R 00

1283 05EF F9

1284 05FO C3

1285

1286 05FI

1287 05FI F8

1288 05F2 C3

1289 05F3

1290

1291

1292

1293

1294

1295

1296

1297

1298

1299

1300 05F3

1301 05F3 32 CO

1302 05F5 80 3E 0041 R 00

1303 05FA 75 23

1304 05FC 82 04

\ 305 05FE E8 06CC R

1306 0601 8A IE 0041

1307 0605 88 CE

R

1308 0607 3A 2E 0046 R

1309 0608 75 OB

1310

13110600 SA 2E 0045 R

13120611 3A 6E 01

1313 0614 14 04

1314

1315061602 DC

1316 0618

1317 0618 02 DC

1318061A

1319 061A 2A 5E 00

1320 0610 SA C3

1321

1322 061F

1323 061F C3

1324 0620

1325

1326

1321

1328

1329

1330

1331 0620

1332 0620 82 02

1333 0622 50

1334 0623 E8 06CC R

1335 0626 88 26 0040 R

1336 062A 58

1337 0628 8A 26 0041 R

SET END POP:

-POPF

JMP SHORT SET8AC -

1-12

06-10-85

JMP SHORT SET END

NEC TERM E N D P ­

; ~~;~;~~

-

-----

-

~~; ~~~ ~ ~~-~;~;~

-

~;~~

-

~~~~~~~;~~

-

~;~~~;;~~~

- - - -

------­

~~; ~;~

- -

;~~~

----

~~~~

- - - - - - - - - - - - - - - - - - - - -

--

- - - - - - - - -

.

--------

-

------

- - - - - - - - -­

CMP

JNZ

~~ST

JNZ

~~6

CMP

II!IDSKETTE STATUS,O

SETBAC -

:g~~-;~~+~~g:

I :

~~e-g~~

SETeAC

~t:~~i~_~~~TE(DI]

AL,RATE-250

CHECK FOR ERROR

I F ERROR JUMP

~~

I

~~Rg~+E~~7~E~E~

I A AS DE TERM I NED

IF DETERMINED NO TRY TO DETERMINE

~~~~ ~~~~ERATE

CHECK FOR t .2M

JNE N 12 ; MUST BE 1.2

~~D :g;~_;~~~~~g:I:~~~ 6~~-C~P~ARK D~I~~R~E~~~M~~~~AT

CAPABILITY

; BACK

OR II!IDSK_STATE{DI],DRV_DET+FMT_CAPA; TURN ON DETERMINED & FMT CAPA

SETBAC:

RET

DSTATE ENDP

- - - -

- - - -

,

----------------------- ----­

DETERM I NES WHETHER A RETRY I S NECESSARY. I F RETRY IS REQU I RED

THEN STATE INFORMHION IS UPDATED FOR RETRY.

; ON EXIT: CY

=

I FOR RETRY, CY

=

0 FOR NO RETRY

1-------------- - ---------- ------------ - - - ------------ ---------------- - - - - - - - --­

RETRY PROC NEAR

CMP

JZ

CNP

JZ

MDV

TEST

JNZ

AND

MOV

ROL

AND

CMP

JE

IIItDSKETTE STATUS,O

NO RETRY-

II!IDSKETTE STATUS,TlME OUT

NO RETRY-

AH~II!IDSK

STATE(OI

AH,MED DET

J

GET STATUS OF OPERATION

, SUCCESSFUL OPERATION

I IF TINE OUT NO RETRY

GET MEDIA STATE OF DRIVE

ESTABLISHED/DETERMINED?

IF ESTABLISHED STATE THEN TRUE ERROR NO RETRY

AH~RATE MSK

CH,Il'ILASTRATE

I SOLATE RATE

GET START OPERATION STATE

CH,4

CH,RATE MSK

CH,AH-

NO_RETRY

TO CORRESPONDING 81TS

ISOLATE RATE BITS

ALL RATES TRIED

IF YES, THEN TRUE ERROR

SETUP STATE INDICATOR FOR RETRY ATTEMPT TO NEXT RATE

000000008 (500)

100000008 (250)

010000008 (300)

-> 100000008 (250)

-> OIOOOOOOB (300)

-> 000000008 (500)

CMP

RCR

AND

AND

OR

MOV

STC

RET

AH,RATE_500+ I

AH,I

Il'IDSKETTE STATUS,O

-

; SET CY FOR RATE 500

; TO NEXT STATE

AH,RATE NSK ; KEEP ONLY RATE BITS tlDSK STATE[Dl] ,NOT RATE MSK+DBL STEP ; RATE, OBL STEP OFF

Il'IDSK-STATE[DI] ,AH TURN ON NEW RATE

RESET STATUS FOR RETRY

SET CARRY FOR RETRY

RETRY RETURN

NO RETRY:

CLC

;

RET

CLEAR CARRY NO RETRY

NO RETRY RETURN

RETRY ENDP .

-- - - - - -

- -

-------------- --------------------- - - - - - - -

- -

- - -- - - - - - --- --

--------

-­

; NUM_TRANS: THIS ROUTINE CALCULATES THE NUMBER OF SECTORS THAT WERE

ACTUALLY TRANSFERRED TO/FROM THE DISKETTE.

ON ENTRY: [SP+ 1] " TRACK

S I-HI

=

HEAD

[8P)

=

START SECTOR

ON EXIT: AL = NUMSER ACTUALLY TRANSFERRED

~~~-;~~~~----- --;~~~---- ~~~~------

.XOR

CMP

JNZ

MoV

CALL

MDV

MOV

CMP

JNZ

AL,AL

IlIDSKETTE STATUS,O

NT OUT -

DL74

GET P ARM

8L,iiNEC STATUS+5

C X , S I -

CH,Il'INEC STATUS+4

DIF_HD -

CLEAR FOR ERROR

CHECK FOR ERROR

I F ERROR 0 TRANSFERRED

SECTORS/TRACK OFFSET TO DL

AH " SECTORS/TRACK

GET END I NG SECTOR

CH

=

HEAD # STARTED

GET HEAD ENDED UP ON

IF ON SAME HEAD. THEN NO ADJUST

MaY eMP

JZ

AOO

DIF_HD:

AOO

SAME TRK:

SUS

MaY

CH,II!INEC STATUS+3

CH, [BP+

TJ

SAME_TRK

BL,AH

BL,AH

8L,18P]

AL,8L

GET TRACK ENDED UP ON l S I T ASKED FOR TRACK

I F" SAME TRACK NO ! NCREASE

ADD SECTORS/TRACK

ADD SECTORSITRACK

SUBTRACT START FROM END

TO AL

RET

;

NUM_TRANS

;

ENOP

--- - - ------ - - ------------- - - -------------- - - - - - - - - - - - - - - ----- --- - - - -

SETUP _END:

---------­

RESTORES OMOTOR COUNT TO PARAMETER PROV IDEO ! N T ASLE AND LOADS iIIDSKETTE_STATUS-TO AH, AND SETS CY.

.

; ON EXIT:

- -

AH, II!IDSKETTE_STATUS, CY REFLECT STATUS OF OPERA T I ON

- - ------- - - ---------------------------- - - - - - - - - - - --- - -­

SETUP END PROC NEAR

MOV DL,2 GET THE MOTOR WA I T PARAMETER

PUSH AX SAVE NUNBER TRANSFERRED

CALL GET PARM

MOV

POP

MOV

.MOTOR COUNT, AH

AX -

AH,.DSKETTE_STATUS

STORE UPON RETURN

RESTORE NUMBER TRANSFERRED

GET STATUS OF OPERATION

5-108 DISKETTE

IBM Personal ComputerMACRO Ass.mbler

DSKETTE -06/10/B5 DISKETTE BIOS

Ver-s;on 2.00

! 338 062F OA E4

13390631 7402

1340 0633 32 CO

1341

1342 0635

1343 0635 BO FC 01

1344 0638 F5

1345 0639 C3

1346 063A

1347

134B

1349

1350

1351

1352

1353

1354 063A

1355 063A 8A A5 0090 R

1356 063E Fb C4 10

1357 0641 75 59

1358

1359

1360

1361 0643 Cb Ob 003E R 00

1362 0648 E8 ObE I R

1363 064B 85 00

1364 0640 E8 01DE R

1365 0650 E8 Ob9E R

1366 0653 12 32

1367

1368

1369

1370 0655 B9 0450

1371 0658 F6 85 0090 R 01

1372 0650 74 02

1373 065F BI AO

1374

1315

1376

1377

1376

1319 066 I

1380 0661 51

1381 0662 C6 06 0041 ROO

1382 0667 33 CO t 383 0669 00 ED

1384 066B CO DO 03

1385 066E 50

1386 066F E8 07DE R

1387 0612 58

1388 0673 08 Fe

1389 0675 E8 069E R

1390 0618 9C

1391 0679 81 E7 00F8

1392 0670 90

1393 067E 59

1394 061F 73 08

1395 0681 FE C5

1396 0683 3A E9

1397 0685 15 DA

1398

1399

1400

1401 Ob81

1402 0681 F9

1403 0688 C3

1404

1405 06B9

1406 0669 8A OE 0045 R

1401 0680 66 80 0094 R

1408 0691 00 EO

1409 0693 3A E9

1410 Ob95 74 05

1411 Ob97 60 BD 0090 R 20

1412

1413069C

1414 069C F6

1415 0690 C3

1416 069E

1411

1418

1419

1420

1421

1422

1423

1424

1425 069E

1426 069E 86 0682 R

1421 ObAI 50

1426 06A2 84 4A

1429 ObA4 E8 0180 R

1430 06A7 8B C1

1431 06A9 8A EO

1432 06AB E6 0180 R

1433 06AE E8 0530 R

1434 Ob81 58

1435 ObB2

1436 Ob82 C3

1431 0683

1436

1439

1440

1441

1442

1443

1444

1445 ObB3

1446 06B3 80 OE

1441 06B5 E8 0000 E

1448 06B8 AB CO

1449 06BA F9

1450 06BB 75 OE

1451

STe

RET

1-13

06- [0-65

OR

JZ

XOR

AH,AH

NUN ERR

Al,Al

CHECK FOR ERROR

NO ERROR

CLEAR NUMBER RETURNED

NUN ERR:

CMP AH.I

CMC

RET

SETUP_END

;

ENDP

---- -- - - - - - - - - - - - - - - - - - - - - - - - - - - - ------- -

SETUP _DBL: CHECK DOUBLE STEP.

SET THE CARRY FLAG TO INDICATE

SUCCESS OR FAilURE

--------------------

- - -

----

-­

; ON ENTRY : AH

=

RATE; 01

=

DRIVE

; ON EXI T :

;~~~;

CY

=

I MEANS ERROR

~;~ - -- - - - ~~~~ - - - ~~~~ - - - -

-­

MOV

TEST

..JNZ

AH,tlDSK STATEIDI]

AH,MED DET

NO_DBl-

; ACCESS STATE

; ESTABLISHED STATE 7

; IF ESTABL[SHED THEN DOUBLE DONE

CHECK FOR TRACK 0 TO SPEED UP ACKNOWLEDGE OF UNFORMATTED 0 I SKETTE

"OV

CALL

"OV

CALL

CALL

Je tlSEEK STATUS,O

MOTOR=ON

CH,O

SEEK

READ 10

SO_ERR

SET RECAL I BRA TE REQU [RED ON ALL DR I VES

ENSURE MOTOR STAY ON

LOAD TRACK 0

SEEK TO TRACK 0

READ JD FUNCTION

I F ERROR NO TRACK 0

INITIALIZE START AND MAX TRACKS [TIMES 2 FOR BOTH HEADS)

MOV

TEST

JZ

MOV

CX, 0450H ; START. MAX TRACKS

POSK STATEIOI],TRK. CAPA ; TEST FOR 80 TRACK CAPABILITY

CNT OK i I F NOT COUNT 1 S SETUP

CL, OAOH i MAX I MUM TRACK 1.2MB

ATTEMPT READ [0 OF ALL TRACKS, ALL HEADS UNTIL SUCCESS; UPON SUCCESS,

MUST SEE IF ASKED FOR TRACK IN SINGLE STEP MODE

=

TRACK 10 READ; IF NOT

THEN SET DOUBLE STEP ON.

CNT_OK:

PUSH

"OV

XOR

SHR

ReL

PUSH

CALL

POP

OR

CALL

PUSHF

ANa

POPF

POP

JNe

INe e"p

JNZ ex

I1IDSKETTE ST A lUS, 0

AX ,AX -

CH,I

AL,3

AX

SEEK

AX

DI,AX

READ_ID

01,11 I I [O[ IB ex

DO CHK eH­

CH,Cl

CNT_OK

SAVE TRACK. COUNT

CLEAR STATUS. EXPECT ERRORS

CLEAR AX

HALVE TRACK, CY

=

HEAD

AX '" HEAD IN CORRECT BIT

SAVE HEAD

SEEK TO TRACK

RESTORE HEAD

01 = HEAD OR'ED DRIVE

READ [0 HEAD 0

SAVE RETURN FROM READ 10

TURN OFF HEAD 1 BIT

RESTORE ERROR RETURN

RESTORE COUNT

IF OK, ASKED = RETURNED TRACK 1

I NC FOR NEXT TRACK

REACHED MAX [MUM YET

CONTINUE TILL ALL TRIED

FALL THRU, READ ID FAILED FOR ALL TRACKS

SET CARRY FOR ERROR

SETUP _DBL ERROR EX [T

"OV

"OV

SHR cop

JZ

OR

CL,.NEC STATUS+3

POSK TRKIDI

CH,I-

J tCL

CH,CL

NO DBL

IiIDSK_STATE[OI] ,DBl_STEP

LOAD RETURNED TRACK

STORE TRACK NUMBER

HALVE TRACK

I SIT THE SAME AS ASKED FOR TRACK

IF SAME THEN NO DOUBLE STEP

TURN ON DOUBLE STEP REQU I REO eLe

RET

; CLEAR ERROR FLAG

SETUP_DBL

;

ENDP

---------- -- ---- - --- -----

- -

----- ----------------------------- --- - - ----------­

I READ_ID : READ ID FUNCTION.

; ON ENTRY: 01 : BIT 2

=

HEAD; BITS 1.0

=

DRIVE

I

; ON EXIT:

;

Dt : BIT 2 IS RESET, BITS 1,0

=

DRIVE

Ol:IDSKETTE STATUS, CY REFLECT STATUS OF OPERATION

I - - - --- - - - - - - - - - - - - - - - - - ':: - - - - -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- - - - - - - - -­

READ 10 PROC

MOV

PUSH

MOV

CALL

MOV

MOV

CALL

CALL

POP

NEAR

AX,OFFSET ER 3

AX

AH,4AH

NEC OUTPUT

AX,DI

AH, AL

NEC OUTPUT

NEC-TERM

AX

MOVE NEC OUTPUT ERROR ADDRESS

READ ! 0 COMMAND

TO CONTROLLER

DRIVE # TO AH, HEAD 0

TO CONTROLLER

WAIT FOR OPERAT[ON, GET STATUS

THROW AWAY ERROR ADDRESS

RET

READ_IO ENOP

CMOS_TYPE; RETURNS DISKETTE TYPE FROM CMOS

; ON ENTRY: 01 I DRIVE #

; ON EXIT:

~~O;

AL

=

TYPE (IF VALID)

-

~;~E-------~~~~-

-

--~E~~--

---- -­

MOV

CALL

TEST

STe

JNZ

AL.CMOS DIAG

CMOS READ

AL,BAD_BAT+BAD_CKSUM

CMOS_T9 i CY REFLECTS STATUS

CMOS 0 I AGNOST [C STATUS BYTE ADDRESS

GET CMOS STATUS

BATTERY GOOD AND CHECKSUM VALID?

SET CY

=

1 INDICATING ERROR FOR RETURN

ERROR EXiT IF EITHER ERROR 81T WAS ON

DISKETTE 5-109

1452 06BO BO 10

1453 06BF E8 0000 E

1454 06C2 OB FF

1455 06C4 15 03

145E>

1451 06CE> CO Ctl 04

1458 06C9

1459 06C9 24 OF

14E>O 06CB

14E>I 06C8 C3

1462 06CC

!4E>3

1464

14E>5

1466

1461

14E>8

1469

1410

1411

1412

1413

1414 OE>CC

1415 OE>CC IE

1476 06CD 56

1417 06CE 2B CO

1418 0600 8E 08

1479 0602 87 03

1480 0604 2A FF

148 I

1482 0606 C5 36 0018 R

1483 06DA 8A 20

1484 060C 87 03

1485 060E 5E

1486 060F IF

1487 06EO C3

1488

1489 06El

1490

1491

1492

1493

1494

1495

1496

1497

1498

1499

1500

150 I

1502

1503

1504

1505

1506

1507

1508

1509 06El

1510 06El E8 012A R

1511 06E4 12 43

1512 06E6 E8 02EE R

1513 06E9 B8 90FD

1514 06EC CD 15

1515 06EE 9C

1516 06EF E8 02C8 R

1517 06F2 90

1518 06F3 73 05

1519 06FS E8 072A R

1520 06F8 72 2F

1521

1522 06FA

1523 06FA 82 OA

1524 06FC E8 06CC R

1525 06FF SA C4

1526 0101 32 E4

1527 0103 3C 08

1528 0105 13 02

1529 0707 BO 08

1530

1531

1532

1533 0109 50

1534 010A 8A F424

1535 0700 F7 E2

1536 070F 88 CA

1537 0111 8800

1538 0713 F8

1539 0714 DT 02

1540 0716 01 01

1541 0718 84 86

1542 071A CO 15

1543 071C 58

1544071073 OA

1545

1546

1547

1548 071F

1549 071F B9 205E

1550 0722 E8 0000 E

1551 0725 FE C8

1552 0121 15 F6

1553

1554 0729

1555 0729 C3

1556 072A

1557

1558

1559

1560

1561

1562

1563

1564

1565

18114 Persone' Computer MACRO Assembler

DSKETTE - - 06/10/85 DISKETTE BIOS

Version 2.00 1-14

06-10-85

MOV

CALL

OR

JNZ

AL

I

CMOS 0 I SKETTE

CMOS READ

DI,oT

CMOS_T5

ADDRESS OF 0 I SKETTE BYTE I N CMOS

GET 0 I SKETTE BYTE

SEE WHICH DRIVE IN QUESTION

IF DRIVE I, DATA IN LOW NIBBLE

I

I

ROR AL,4 EXCHANGE NIBBLES IF SECOND DRIVE

CMOS T5:

AND AL

I

OOFH KEEP ONLY DR I VE DATA, RESET CY = 0

CMOS

CMOS_TYPE

;

-

-

19.

RET

ENOP

-------------------------

; GET_PARM:

- -

CY

=

STATUS OF READ

--------------------- ----

~~b~K R~~T ~~~DF~6C~~ST~~EO!~~E~~~

-

I

~~~~T~~

---

I

- - - - - - -

-------------­

~~O~OT~~E~ ~ S~_:~~~

FROM

THAT TABLE IS THEN MOVED INTO AH, THE INDEX-OF THAT 8YTE BEING

THE PARAMETER IN DL.

; ON ENTRY I DL = I NDEX OF BYTE TO BE FETCHED

; ON EXIT:

;

~~;-;~~~

AH = THAT BYTE FROM BLOCK

AL

I

OH DESTROYED

----- -- p~~~----~~~;--------

PUSH

PUSH

SUB

MOV

OS

S I

AX ,AX

DS,AX

OS

=

0 • BIOS DATA AREA

XCHG

SUB

XCHG

POP

POP

RET

OX,BX

BH.8H

ASSUME OS,ABSO

LOS 51,ODISK POINTER

MOV AH,[SI+BXj

OX,BX

SI

OS

8L = INDEX

BX = INDEX

I PO I NT TO BLOCK

; GET THE WORD

; RESTORE BX

ASSUME 05:0ATA

GET_PARM

;

; MOTOR_ON

ENDP ---

-

---- - - - - -- - - --

----------------

-- -

----------------

--------- -- - -­ i~R~E~~!g~OO~

I

~~D

A

W~~;F~g~E~~~~R

H

~6~R~U~E~

I

~~FF~7ET~M~~~~R~OUNT

THAT THE MOTOR DOES NOT GO OFF DURING THE OPERATION. IF THE

MOTOR NEEDED TO BE TURNED ON, THE MULTI-TASK ING HOOK FUNCT I ON

IAX=90FDH. INT ISH) IS CALLED TELLING THE OPERATING SYSTEM

THAT THE BIOS IS ABOUT TO WAIT FOR MOTOR START UP. IF THIS

FUNCTION RETURNS WITH CY = I, IT MEANS THAT THE MINIMUM WAIT

HAS BEEN COMPLETED. AT THIS POINT A CHECK IS MADE TO ENSURE

THAT THE MOTOR WASN'T TURNED OFF BY THE TIMER. IF THE HOOK DID

NOT WAIT, THE WAIT FUNCTION IAH=086H) IS CALLED TO IAIT THE

PRESCRIBED AMOUNT OF TIME. IF THE CARRY FLAG IS SET ON RETURN,

IT MEANS THAT THE FUNCTION IS IN USE AND DID NOT PERFORM THE

WAIT. A TIMER 1 WAIT LOOP WILL THEN DO THE WAIT,

ON ENTRY:

ON EXIT:

~~;~~-~~------

CALL

JC

CALL

MOV

INT

PUSHF

CALL

POPF

JNC

CALL

JC

01 = DRIVE #

AX,BX,CX,OX DESTROYED

PROC NEAR

TURN ON

MOT Ts ON

XLAT 0[0

AX , 090FDH

ISH

XLAT_NEW

M WAIT

TURN ON

MOT_Ts_ON

TURN ON MOTOR

IF CY=1 NO WAIT

TRANSLATE STATE TO COMPATIBLE MODE

LOAD WA I T CODE

&

TYPE

TELL OPERAT I NG SYSTEM ABOUT TO 00 WA I T

SAVE CY FOR TEST

TRANSLATE STATE TO PRESENT ARCH.

RESTORE CY FOR TEST

BYPASS LOOP IF OP SYSTEM HANDLED WAIT

CHECK AGAIN IF MOTOR ON

IF NO WAIT MEANS IT IS ON

; - - - - -

GP2:

J13:

NOV

CALL

MOV

XOR

CM?

JAE

MOV oL, 10

GET PARM

AL,AH

AH,AH

AL,8

G?'

AL,8

GET THE MOTOR WA IT PARAMETER

AL

AX

=

MOTOR WA I T PARAMETER

=

MOTOR '''IT PARAMETER

SEE IF AT LEAST A SECOND IS SPECIFIED

IF YES, CONTINUE

ONE SECOND WA I T FOR MOTOR START UP

AX CONTAINS NUMBER OF lIB SECONDS (125000 MICROSECONDS) TO WAIT

PUSH

MOV

NUL

NOV

NOV

CLC

RCL

RCL

NOV

INT

POP

JNC

AX

OX,62500

OX

CX.OX

OX,AX

SAVE WAIT PARAMETER

LOAD LARGEST pass

I BLE MULTI PL I ER

MULTIPLY BY HALF DF WHAT'S NECESSARY

CX = HIGH WORD

CX,OX = ! 12 • 1# OF MICROSECONDS)

CLEAR CARRY FOR ROTATE

DOUBLE LOW WORD, CY CONTAINS OVERFLOW

DOUBLE HI. I NCLUO I NG LOW WORD OVERFLOW

LOAD 'A I T CODE

I PERFORM WAIT

; RESTORE WA I T PARAMETER

; ey MEANS WA I T COULD NOT BE DONE

FOLLOWING LOOPS REQUIRED WHEN RTe WAIT FUNCTiON IS ALREADY IN USE

MOV

CALL

DEC

JNZ

OX,1

CX,I

AH.86H

15H

AX

MOT_I S_ON eX,8286

WAITF

AL

JI3

WAIT FOR lIB SECOND PER {ALI

COUNT FOR 1/8 SECOND AT 15.0B5137 US

GO TO FIXED WAIT ROUTINE

DECREMENT TIME VALUE

ARE WE DONE YET

MOT IS ONI

RET

MOTOR_ON

:

,

---

--

-------------

I ON ENTRY:

ENDP

- - -

--

- - - - - - - - - -

-

- ---

----

----- - - - - - - - - - - - - - -­

TURN MOTOR ON AND RETURN WAIT STATE.

DI

=

DRIVE #

I

, ON EXIT:

;--­

CY

CY

=

0 MEANS WA I T REQU I RED

=

1 MEANS NO WA I T REQU I RED

AX,BX,CX,DX DESTROYED

5-110 DISKETTE

IBM Personal Computer MACRO Assembler

DSKETTE -06/10/85 DISKETTE BIOS

VersIon 2.00

1566 072A

1567 072A 8B OF

1568 072C 8A CB

1569 072E CO C3 04

1570 0731 FA

1571 0732 C6 06 0040 R FF

1572 0737 AO 003F R

1573 073A 24 30

1574 073C 84 01

1575 073E 02 E4

1576

1577

1578

1579

1580

1581 0740 3A C3

1582 0742 75 Ob

1583 0744 84 26 003F R

1584 0748 75 2C

1585

158b 074A

1587 074A OA E3

1588 074C 8A 3E 003F R

1589 0750 80 E7 OF

1590 0753 80 26 003F R CF

1591 0758 08 26 003F R

1592 075C AD 003F R

1593 075F 8A 08

1594 07bl 80 E3 OF

1595 07b4 FB

159b 07b5 24 3F

1597 0767 CO CO 04

1598 07bA OC OC

1599 07bC 8A 03F2

1bOO 07bF EE

IbOI 0770 3A OF

1602 0772 74 02 lb03 0774 F8

1604 0775 C3

Ib05

160b 0776

Ib07 077b F9

I b08 0777 FB

I b09 0778 C3

1610 0779

1611

1612

1613

1614

1 b 15

161 b

Ibl7

Ib I 8 0779

1619 0779 B2 09

Ib20 0778 E8 ObCC R

1621 077E F6 Ob 003F R 80

1622 0783 74 14

1623 0785 OA E4

1624 0787 75 14 lb25 0789 84 OF

1b2b 0788 8A 85 0090 R

1627 078F 24 CO

1628 0791 3C 80

Ib29 0793 75 08

1630

I b31 0795 84 14

I b32 0797 E8 04

Ib33

I b34 0799

I b35 0799 OA E4

1636 0798 74 IF

1637

Ib38

1639

I b40 0790

1641 0790 8A C4

I b42 079F 32 E4

1643 07AI 50

1644 07A2 8A 03E8

1 b45 Oa5 F7 E2

1646 07A7 88 CA

Ib47 07A9 88 DO lb48 07A8 84 86

Ib49 07AD CO 15

1650 07AF 58

1651 0780 73 OA

1652

Ib53 0782

1654 0782 89 0042

1655 0785 E8 0000 E

1656 0788 FE C8

1657 078A 75 Fb

1658 078C

1659 078C C3

I bbO 0780

1661

Ibb2

1663

16b4

Ibb5

16b6

1667

1668

16b9

1b70

1b71

1672

1673

1674

1b75

1676 0780

1677 0780 8A 03F4

I b78 07CO 83 02

1679 07C2 33 C9

TURN ON PROC

~ MOV

MOY

ROL eLI

MOY

MOY

ANO

MOY

SHL

NEAR

BX,DI

CL,BL

BL,4

ClMOTOR COUNT, OFFH

AL,ClMOTOR STATUS

AL, 00 I 100008

AH,1

AH,CL

CL

BL

= DRIVE #

= DRIVE #

=

DR I VE SELECT

NO INTERRUPTS WHlLE DETERMINING STATUS

ENSURE MOTOR STAYS ON FOR OPERATION

GET 0 I G I TAL OUTPUT REG I STER REFLECT I ON

KEEP ONLY DR I VE SELECT 81 TS

MASK FOR DETERMINING MOTOR BIT

AH = MOTOR ON, A=OOOOOOOI, B=OOOOOOIO

AL = DRIVE SELECT FROM OMOTOR STATUS

8L = DR I VE SELECT DES I RED

AH

=

MOTOR ON MASK DESIRED

CMP

JNZ

TEST

JNZ

TURN I TON:

-OR

MOY

ANO

ANO

OR

MOY

MOY

AND

STI

ANO

ROL

OR

MOY

OUT eMP

JZ eLe

RET

NO MOT WAIT:

~ ~ STC

STI

RET

TURN_ON ENDP

HO_WAIT :

AL ,8L

TURN I T ON

AH,ClMOTOR STATUS

NO_MDT_WATT

AH,BL

BH,ClMOTOR STATUS

BH,OOOO 11118

ClMOTOR STATUS,II00ll11B

ClMOTOR~ST ATUS, AH

AL,ClMOTOR STATUS

BL,AL

BL,OOOOI I I 18

AL,OOI I I I I 18

AL,4

AL,OOOOI 1008

DX,03F2H

DX,AL

8L,BH

NO_MDT_WAIT

WA I T FOR HEAD SETTLE T I ME.

REQUESTED DRIVE ALREADY SELECTED?

I F NOT SELECTED JUMP

TEST MOTOR ON 8 IT

JUMP I F MOTOR ON AND SELECTED

AH

=

OR I VE SELECT AND MOTOR ON

SAVE COPY OF OMOTOR STATUS 8EFORE

KEEP ONLY MOTOR B1 TS

CLEAR OUT DR J VE SELECT

OR I N DR I VE SELECTED AND MOTOR ON

GET DIGITAL OUTPUT REGISTER REFLECTION

~~~~Mg~~~-~6~6~S

8

~~~ER,

8H=BEFORE

ENA8LE INTERRUPTS AGA I N

STRIP AWAY UNWANTED 8ITS

PUT 81TS IN DESIRED POSITIONS

NO RESET, ENABLE DMA / INTERRUPT

SELECT DR I VE AND TURN ON MOTOR

NEW MOTOR TURNED ON ?

NO WAIT REQUIRED IF JUST SELECT

SET CARRY MEANING WAIT

SET NO WAIT REQUIRED

INTERRUPTS 8ACK ON

; ON ENTRY:

;

; ON EX IT:

~~=;~ ~ ~

------

MOV

--01 : DRIVE #

AX,8X,CX,DX DESTROYED

;;~~----~~~;

DL,9

---------------------------

GET HEAD SETTLE PARAMETER

CALL

TEST

JZ

OR

JNZ

MOV

MOV

AND

CMP

JNZ

GET PARM

ClMOTOR STATUS, 10000000B

ISNT WRITE

AH,AH

00 WAT

AH~HD

12 SETTLE

AL,ClDSK-STATEIDlj

AL. RATE~MSK

AL,RATE~250

DO~WAT ~

SEE IF A WRITE OPERATION

I F NOT. 00 NOT ENFORCE ANY VALUES

CHECK FOR ANY WA I T?

I F THERE DO NOT ENFORCE

LOAD 1.2104 HEAD SETTLE 104 I N I MUM

LOAD STATE

KEEP ONLY RATE

1.2104 DRIVE?

DEF AUL T HEAD SETTLE LOADED

-

MOY

JMP

ISNT WRITEI

OR

JZ

AH,HD320 SETTLE

SHORT Do"::::WAT

AH,AH

HW DONE

USE 320/360 HEAD SETTLE

CHECK FOR NO WA I T

I F NOT WR

AH CONT A I NS NUM8ER OF 1.11 LL I SECONDS TO WA I T

J TE AND 0

00 WAT:

MOY

XOR

PUSH

MOY

MUL

MOY

MOY

MOY

INT

POP

JNC

AL,AH

AH,AH

AX

OX, 1000

OX

CX,DX

DX,AX

AH,86H

15H

AX

HW_DONE

AL '" # MILLISECONDS

AX

=

# MILLISECONDS

SAVE HEAD SETTLE PARAMETER

SET UP FOR MULTI PL Y TO 1041 CROSECONDS

OX, AX = # 1041 CROSECONDS

CX,AX

=

# MlCROSECONOS

CX,DX = # MICROSECONDS

LOAD WA I T CODE

PERFORM WA I T

RESTORE HEAD SETTLE PARAMETER

CHECK FOR EVENT WA I T ACT I VE

J29:

MOY

CALL

OEC

JNZ eX,6b

WA ITF

AL

J29

I MILLISECOND LOOP

COUNT AT 15.085737 US PER COUNT

DEL AY FOR I MILL I SECOND

DECREMENT THE COUNT

00 AL MILLISECOND # OF TIMES

HW_DONE:

RET

HD_WAIT ENDP

;---------------------------­

THIS ROUTINE SENDS A BYTE TO THE NEC CONTROLLER AFTER TESTING

FOR CORRECT 0 I RECT I ON AND CONTROLLER READY TH I S ROUT I NE WILL

TIME OUT IF THE BYTE IS NOT ACCEPTED WITHIN A REASONABLE AMOUNT

OF TIME, SETTING THE DISKETTE STATUS ON COMPLETION.

ON ENTRY: AH = BYTE TO 8E OUTPUT

ON EXIT: CY

=

0 SUCCESS

CY = I FAILURE -- DISKETTE STATUS UPDATED

I F A FA I LURE HAS OCCURREO, THE RETURN I S MADE ONE LEVEL

HIGHER THAN THE CALLER OF NEC OUTPUT. TH I S REMOVES THE

REQUIREMENT OF TESTING AFTER EVERY CALL OF NEC OUTPUT.

~~~-~~~;c;--

AX, 8X, ex, OX DESTROYED

---

-;~~e NE~~-------

---­

MOV

MOV

XOR

OX. 03F4H

BL,2 eX,ex

STATUS PORT

HIGH ORDER COUNTER

COUNT FOR T I ME OUT

DISKETTE 5-111

IBM Personal Computer MACRO Assembler

DSKETTE ~06/10/85 DISKETTE 8105

Version 2.00

1680

1681 07C4 EC

1682 Orc5 24 CO

1683 07C7 3C 80

1684 07C9 74 OE

1685 07CS E2 F7

1686

1687 07CD FE CB

1688 07CF 75 F3

1689

1690

1691

1692 0701 80 OE 0041 R 80

1693 0706 58

1694 0707 F9

1695 0708 C3

1696

1697

1698

1699 0709 8A C4

1700 07DB 42

170 I 07DC EE

1702 0700 C3

1703 07DE

1704

1705

1706

1707

1708

1709

1710

1712

1713

1714

1715 07DE

I 7 I 6 070E 8B OF

I 7 1 7 07EO 8A 0830 R

1718 07E3 52

1719 07E4BO 01

1720 07E6 86 C8

1721 07E8 02 CO

1722 07EA 86 CB

1723 07EC 84 06 003E R

1724 07FO 75 IC

1725

1726 07F2 08 06 003E R

1727 07F6 E8 083E R

1728 07F9 73 OA

1729

Ina

1731

1732 07FB C6 06 0041 R 00 l73l 0800 E8 083E R

1734 0803 72 37

1735

1736 0805

1737 {l805 C6 85 0094 R 00

1738 080A OA ED

1739 O<\lOC 74 29

1140

1141

1742

1143 080r;:: F6

1144 08q 74

85 0090

02

1 745 0815 DO E5

1146

R 20

11410811 3A AD 0094 R

11480818 74 IF

1149

1150081088 AD C094 R

1151 0821 B4 OF

1152 0823 E8 01Bo R

1753 0826 88 OF

1154 0828 8A E3

1755 082A Ee

1156 0820 8,1.,

01BD R

A5 0094 R

1757 0831 E8 07BD R

1758 0834 E8 0855 R

1159

1760

1161

1762 0837

1763 0831 9C

1164 0838 E8 0779 R

1165 083B 90

1766 083C

1161 083C 58

1768 0830

1169 0830 C3

1110 083E

1771

1772

1773

1774

1775

1176

1177

1778083E

1179 083E 51

1180 083F S8 0853 R

1781 0842 50

1182 0843 84 07

1183 0845 E8 0180 R

1784 0848 88 OF

1185 084A 8A E3

1786 084C E8 0180 R

1187 084F E8 0855 R

1188 0852 58

1789 0853

1790 0853 59

1191 0854 C3

1192 0855

1193

CALL

MOV

MOV

CALL

CALL

RC BACK:

POP

POP

RECAL

RET

ENDP

AH,01H

NEC OUTPUT

BX,OI

AH,BL

NEC OUTPUT

CHK-STAT 2

AX ex

1-16

06-10

.J23: IN

AND

CMP

JZ

LOOP

DEC

JNZ

AL,DX

AL, I lOOOOOOS

AL, 10000000S

J27

J23

BL

023

FALL THRU TO ERROR RETURN

OR

POP

STC

RET

GET STATUS

KEEP STATUS AND DIRECTION

STATUS 1 AND DiRECTION 0 ?

STATUS AND DIRECTION OK

CONTINUE TILL ex

EXHAUSTED

DECREMENT COUNTER

REPEAT TILL DELAY FINISHED, CX

CllDSKETTE STATUS, TIME OUT

AX DISCARD THE RETURN ADDRESS

INDICATE ERROR TO CALLER

.J21:

DIRECTION AND STATUS OK; OUTPUT BYTE

MOV

INC

OUT

RET

NEC_OUTPUT

AL,AH

OX

OX ,AL

GET 8YTE TO OUTPUT

DATA PORT STATUS PORT'" I

OUTPUT THE BYTE

CY '" 0 FROM TEST I NSTRUCT I ON

SEEK:

ON ENTRY:

TH I S ROUT I NE 'II I LL MOVE THE HEAD ON THE NAMED DR I VE TO THE NAMED

TRACK. IF THE DRIVE HAS NOT SEEN ACCESSED SINCE THE DRIVE

RESET COMMAND WAS ISSUED, THE DRIVE WILL SE RECALIBRATED.

01 : DRIVE #

CH : TRACK #

ON EX I T: @DSKETTE STATUS, CY REFLECT STATUS OF OPERATION.

~~E;

AX ,BX, CX:DX DESTROYED --

--;~~~

---

~~~~

--------

~

-- ­------------------------- ­-

-~-------------

MOV

MOV

PUSH

MOV

XCHG

ROL

XCHG

TEST

.JNZ aX,D!

OX. OFFSET NEC ERR

OX -

AL. I

CL,BL

AL,CL

CL ,BL

AL,@SEEK STATUS

.J28A -

BX

=

DR I VE #

LOAD RETURN ADDRESS

ON STACK FOR NEC OUTPUT ERROR

ESTABLISH MASK FOR RECALIBRATE TEST

GET DR I VE VALUE INTO CL

SH I FT MASK BY THE OR I VE VALUE

RECOVER TRACK VALUE

TES T FOR RECALl8RA TE REQU I RED

.JUMP IF RECALl8RATE NOT REQUIRED

OR

CALL

JNC

<1OSEEK STATUS,AL

RECAL -

AFT _RECAL

TURN ON THE NO RECALIBRATE BIT IN FLAG

RECALI8RATE DRIVE

RECAL I BRA TE DONE

.J28A:

R1 :

ISSUE RECALIBRATE FOR 80 TRACK DISKETTES

CllDSKETTE STATUS,O

RECAL

RB

-

CLEAR OUT INVALID STATUS

RECALIBRATE DRIVE

IF RECALIBRATE FAILS TWICE THEN ERROR

1FT RECAL:

MOV

OR

JZ

@DSK TRK I D I

CH,CH

DO_WAIT

1

,0 SAVE NEW CYLINDER AS PRESENT POSITION

CHECK FOR SEEK TO TRACK 0

HEAD SETTLE, CY

=

0 IF JUMP

DR I VE I SIN S YNCHRON I ZA T J ON WITH CONTROLLER, SEEK TO TRACK

TEST

JZ

SHL

CMP

JE

MOV

MOV

CALL

MOV

MOV

CALL

MOV

CALL

CALL

@DSK STATEIDI1.DBL STEP

R1 -

CH,I

CH,@DSK TRK I 0 I

RB -

1

'tODSK TRKIDJ l,CH

AH,OFH

NEC OUTPUT

BX,51

AH,8L

NEC OUTPUT

AH,@DSK TRK[DJ

J

NEC OUTPUT

CHK-STAT 2

WA I T FOR HEAD SETTLE

CHECK FOR DOU8LE STEP REQUIRED

SINGLE STEP REQUIRED 8YPASS DOUBLE

DOUBLE NUMBER OF STEP TO TAKE

SEE IF ALREADY AT THE DESIRED TRACK

I F YES, DO NOT NEED TO SEEK

SAVE NEW CYLINDER AS PRESENT POSITION

SEEK COMMAND TO NEC

BX DR I VE #

OUTPU7 DR I VE NUMBER

GET CYL I NDER NUMBER

ENDING INTERRUPT AND SENSE STATUS

DO WAIT:

PUSHF

CALL

POPF

RB:

POP

NEC ERR:

RET

SEEK ENDP

HD_WAIT

-----------­

SAVE STATUS

WAI T FOR HEAD SETTLE T I ME

RESTORE STATUS

CLEAR ERROR RETURN FROM NEC_OUTPUT

RETURN TO CALLER

LOAD NEC_OUTPUT ERROR

RECAL I BRA TE COMMAND ax = DR I VE #

OUTPUT THE DR I VE NUMBER

GET THE INTERRUPT AND SENSE INT STATUS

THROW AWAY ERROR

5-112 DISKETTE

IBM Personal Compl.lt.r MACRO Assembler

DSKETTE - - 06/10/85 DISKETTE BIOS

Version 2.00

1194

1195

1196

1191

1198

1199

1800 0855

1801 0855 B8 0873 R

1802 0858 50

1803 0659 E6 D67C R

1804 085C 12 14

1805 085E 84 08

1806 0860 E8 01BD R

1807 0863 E8 08A4 R

1608 0866 12 OA

1809 0868 AD 0042

1810 0868 24 60

1811 0860 3C 60

R

1812 086F 14 03

1813 0871 F8

1814 0872

1815087258

1816 OS73

1817 0813 C3

1818

1819 OS74

IS20 0674 80 DE 0041 R 40

1821 0879 F9

1622 087A E8 F6

1823 087C

1824

1825

1826

1821

1828

1829

1830

1631 OS7C

1832 OS1C F8

1833 0810 FS

1634 081E 88 9001

1835 0881 CD 15

1836 0683 72 11

1837 t 838 0885 83 04

1839 0887 33 C9

1840 0889

1841 0889 F6 06 003E R 80

1842 088E 75 OC

1843 0890 E2 Fl

ISH 0892 FE C8

IS45 0894 75 F3

1846

IS47 0896 80 OE 0041 R 80

1848 0898 F9

1849 089C

1850 OS9C 9C

IS51 0890 80 26 003E R 7F

IS52 08A2 90

IS53 08A3 C3

IS54 08A4

1855

1856

IS57

185S

1859

1860

1861

1862 08A4

1863 08A4 51

1864 08A5 8F 0042 R

1865 08A8 83 07

1866 08AA 8A 03F4

1861

1868

1869

1870 08Ao 87 02

1871 08AF 33 C9

1872 0881

1813 0881 EC

1814 0882 24 CO

1875 0884 3C CO

1816 0886 74 DE

1877 0888 E2 F7

1818

1879 088A FE CF

'880 088C 15 F3

1881

! 882 068E 80 DE 0041 R 80

1883 OSC3 F9

1884 08C4 EB 18

1885

1886

1887

1888 OSC6

1889 08C6 42

1890 08Cl EC

1891 OSC8 88 05

IS92 OSCA 41

IS93

IS94 OSCB B9 0002

1895 08CE E8 0000 E

1896 OSol 4A

1897 0802 EC

1898 0803 A8 10

1899 0805 14 OA

1900

1901 0807 FE C8

1902 0809 15 02

1903 080B 80 OE 0041 R 20

1904 08EO F9

1905

1906

1907

1-11

06-10-85

THIS ROUTiNE HANDLES THE INTERRUPT RECEIVED AFTER RECALl8RATE,

SEEK, OR RESET TO THE ADAPTER. THE 1NJERRUPT 1 S WA 1 TEO FOR, THE

INTERRUPT STATUS SENSED, AND THE RESULT RETURNEO TO THE CALLER.

ON EXITI CtDSKETTE STATUS, CY REFLECT STATUS OF OPERATION.

I - - - --- - - - - - --- - - - - --- - -::" - - - - - - - - - - - -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- --­

CHK STAT 2 PROC NEAR

MOV AX ,OFFSET CS 8ACK I LOAD NEC_OUTPUT ERROR AODRESS

PUSH

CALL

JC

AX

WA I TINT

J34 -

WA I T FOR THE INTERRUPT

1 F ERROR, RETURN IT

SENSE INTERRUPT STATUS COMMAND MOV

CALL

CALL

JC

AH,08H

NEC OUTPUT

RESDL TS

J34

READ I N THE RESULTS

~~6

CMP

JZ

CLC

J34:

POP

CS BACK:

RET

~t: ~7Tgo~~~~us

AL, 0 I 1000008

J35

AX I

GET THE FIRST STATUS 8YTE

ISOLATE THE BITS

TEST FOR CORRECT VALUE

IF ERROR, GO MARK IT

GOOO RETURN

THROW AWAY ERROR RETURN

J35:

CIIDSKETTE_STATUS , BA~_SEEK OR

STC ERROR RETURN CODE

JMP SHORT J34

CHK STAT 2 ENDP ,--=---':::------------------------------------------------------ ------:----------­

; WAIT INT: THIS ROUTINE WAITS FOR AN INTERRUPT TO OCCUR A Tlh4E OUT ROUTINE

TAKES PLACE DURING THE WAIT, SO THAT AN ERROR MAY BE RETURNED

IF THE DRIVE IS NOT READY.

I ON EXIT: PDSKETTE STATUS. CY REFLECT STATUS OF OPERATION.

I - - - - - - - - - - - - - - - - - - - - - - -::- - - - - - - - - - - - --- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -­

WAIT INT

ST!

PROC NEAR

TURN ON INTERRUPTS, JUST IN CASE

CLC

MOV

INT

"C

AX,0900fH

15H

J36A

CLEAR TIMEOUT INOICATOR

LOAD WAI T CODE AND TYPE

PERFORM OTHER FUNGT I ON

8YPASS TIMING LOOP IF TIMEOUT DONE

MOV

XOR

BL,4

CX,CX

CLEAR THE COUNTER S

FOR 2 SECONO WAiT

J36s

TEST

"NZ

LOOP

OEC

"NZ

PSEEK_STATUS, I NT_FLAG

"3.

BL "3.

I

TEST FOR INTERRUPT OCCURR I NG

COUNT DOWN WHILE WAI,TING

SECOND LEVEL COUNTER

..)36A: OR

STC

PDSKETTE_STATUS, T I ME_OUT j NOTH I NG HAPPENED

ERROR RETURN

J31 :

PUSHF

ANa

WAIT INT

POPF

RET

-

; SAVE CURRENT CARRY

CtSEEK STATUS,NOT INT FLAG

1 j

; TURN OFF INTERRUPT FLAG

RECOVER CARRY

GOOD RETURN COOE

ENDP

1- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - --

: RESULTS:

- - - - - - - - - - - - - - - - - - - - - ­

THIS ROUTINE WILL REAO ANYTHING THAT THE NEC CONTROLLER RETURNS

: FOLLOWING AN INTERRUPT.

ON EXIT: ClDSKETTE STATUS, CY REFLECT STATUS OF OPERATION.

I

~~;~~~;

AX ,BX ,CX-;-DX DESTROYED

-

~~~~

--

--~~~R-

--------------­

PUSH h40V

MOV

MOV

01

01 ,OFFSET .NEC STATUS

BL,l -

OX, 03F4H

PO I NTER TO OAT A AREA

MAX STATUS 8YTES

STATUS PORT

;-----

WA 1 T FOR REQUEST FDR MASTER

RIOs

J39:

MOV

XDR

IN

ANa

CMP

"Z

LOOP

BH,2

CX,CX

AL,DX

AL,II0000008

AL,II0000008

"42

"39

BH

"39

HIGH ORDER COUNTER

COUNTER

WA I T FOR h4ASTER

GET STATUS

KEEP OPILY STATUS AND DIRECTION

STATUS I AND DIRECTION 0 ?

STATUS AND DIRECTION OK

LOOP TILL TIMEOUT

OEC

"NZ

OR

STC

"MP

CIIDSKETTE_STATUS, TIME_OUT

SHORT POPRES

READ IN THE STATUS

DECREMENT HIGH ORDER COUNTER

REPEAT TILL OELA Y DONE

SET ERROR RETURN

POP REGI STERS ANO RETURN

J42:

INC

IN

MOV

INC

OX

AL,DX

[01] ,AL

01

MOV

CALL

OEC

IN

TEST

"Z

CX,2

WAITF

OX

AL,DX

AL,OOOl00008

POPRES

DEC

"NZ

OR

STC

BL

RIO

CtOSKETTE_ST ATUS, 8Ao_NEC

1----- RESULT OPERATION I S DONE

POINT AT DATA PORT

GET THE DATA

STORE THE 8YTE

I I NCREMENT THE PO INTER

MINIMUM 12 MICROSECONDS FOR NEC

WAIT 15 TO 30 1041 CROSECONOS

POINT AT STATUS PORT

GET STATUS

TEST FOR NEC ST I LL 8USY

RESULTS OONE

7

DECREMENT THE STATUS COUNTER

GO 8ACK FOR MORE

TOO MANY STATUS BYTES

SET ERROR FLAG

DISKETTE 5-113

19M Persona! Computer MACRO Assembler

DSKETTE -06/10/85 DISKETTE BIOS

VersIon 2.00

190808E1

1909 08E1 5F

1910 08E2 C3

1911 08E3

1912

1913

1914

1915

1916

1911

1918

1919

1920

1921

1922 08E3

1923 08E3 E8 06E 1 R

1924 08E6 BA 03F1

1925 08E9 EC

1926 08EA A8 80

1921 08EC C3

1928 08ED

1929

1930

1931

1932

1933

193-4

1935 05EO

1936 08EO E8 06E 1 R

1931 08FO E8 083E R

1938 08F3 12 3C

1939 08F5 85 30

1940 08F1 E8 010E R

19-41 08FA 12 35

1942 08FC B5 08

1943 oaFE

194-4 08FE FE CD

19-450900 51

19-46 0901 E8 01DE R

1941 0904 12 2C

1948 0906 B8 0931 R

1949 0909 50

1950 090A B4 04

1951 090C E8 07BO R

1952 090F 8B CI

1953 0911 8A EO

19540913 E8 01BD R

1955 0916 E8 08A4 R

1956 0919 58

\957 091A 59

1958 0918 F6 06 0042 R 10

1959 0920 74 DC

1960 0922 OA ED

1961 09241406

1962

1963

1964

1965

1966 0926 80 80 0090 R 94

1961 0928 C3

1968

1969 092C

1910 092C 80 80 0090 R 01

1911 0931

1912 0931 C3

1913

1914 0932

1915 0932 59

1916 0933 C3

1917

1918 0934

1-18

06-10 85

POPRES:

POP

RET

01

; RETURN WITH CARRY SET

RESUL TS ENOP

;

------- ------ -- -- - -

-------

------- - ---- - ---- -- - - - ----- ------------ - ----------­

; READ_DSKCHNG: READS THE STATE OF THE DISK CHANGE LINE.

;

; ON ENTRY:

;

; ON EXIT:

;

;

;

~~~~ ~~;;~~~ -

01

=

DRIVE II

0]

=

DRIVE II

ZERO FLAG

ZERO FLAG

AX.

= 0 : 0 I SK CHANGE LINE I NACT I VE

= 1 : 0 I ex

,OX DESTROYED

51<: CHANGE LINE ACT I VE

---

;~~; -

--

~~~~ - - -

----

- - - - -­

CALL

MOV

IN

TEST

MOTOR ON

OX. 03F1H

AL,DX

AL,DSK_CHG

TURN ON THE MOTOR [F OFF

ADDRESS DIGITAL [NPUT REGISTER

[NPUT DIGITAL INPUT REGISTER

CHECK FOR DISK CHANGE LINE ACT I VE

;

RET RETURN TO CALLER WITH ZERO FLAG SET

READ_DSKCHNG ENDP

;

~~ ~ ~~~~~;; - -

-~~~~~~~ ~~ ~ ;~~~~~~ -~~ ~ ~~ ~; ~ ~- ~~ ~~ ~~~~;; ~~~ ~;~~~~; -;~~~~ -­

INFORMATION ACCORDINGLY, i

ON ENTRY; 01

=

DRIVE.

~~~~~-~~;-------;~~;

-

-- ~~~~ -- - - - - - -­

CALL

CALL

,JC

MOV

CALL

,JC

MOV

SK_GIN:

DEC

PUSH

CALL

JC

"OV

PUSH

"OV

CALL

"OV

"OV

CALL

CALL

POP

POP

TEST

JZ

OR

JZ

DRIVE [5 A 360; SET DRIVE TO DETERMINED;

SET MEDIA TO DETERMINED AT RATE 250.

OR

RET

OR

RET

POP BAC:

POP

RET

OR I VE _ DET

MOTOR ON

RECAL-

DO BAC

CH-;-TRK SLAP

SEEK­

DO BAC

CH-;-QUIET_SEEK+l eH ex

SEEK

POP BAC

AX.OFFSET DO BAC

AX

AH. SENSE DRV ST

NEC OUTPUT -

AX.DI

AH.AL

NEC OUTPUT

RESDL TS

AX ex

"'NEC STATUS ,HOME

SK GIN

CH-;-CH

15_80

CX

ENDP

TURN ON MOTOR I F NOT ALREAOY ON

RECALIBRATE DRIVE

ASSUME NO DR 1 VE PRESENT

SEEK TO TRACK 48

ERROR NO DR I VE

SEEK TO TRACK 1 0

DECREMENT TO NEXT TRACK

SAVE TRACK

POP ANa RETURN

LOAD NEC OUTPUT ERROR ADDRESS

SENSE OR I VE STATUS COMMAND BYTE

OUTPUT TO NEC

AL

=

DRIVE

AH '" DR I VE

OUTPUT TO NEe

GO GET STATUS

THROW AWAY ERROR ADDRESS

RESTORE TRACK.

TRACK 0 '(

GO TI LL TRACK 0

]S HOME AT TRACK 0 '(

MUST BE 80 TRACK OR] VE

.OSK_STATE[D[],TRK_CAPA; SETUP 80 TRACK. CAPABILITY

THROW AWAY

5-114 DISKETTE

IBM Personal COlllput.,. MACRO Ass.",ble,.

DSKETTE -06/10/85 DISKETTE BIOS

Vers ion 2.00 1-19

06-10-65

1919

1980

1981

1982

1983

1984

1985

1986

1981

1988 0934

1989 0934 FB

1990 0935 50

1991 0936 IE

1992 0931 E8 0000 E

1993 093A 80 DE 003E R 80

1994 093F IF

1995 0940 80 20

1996 0942 E6 20

1991 0944 B8 9101

19980941 CD 15

1999 0949 58

2000 094 .... CF

2001

2002 0948

2003

2004

2005

2006

2001

2008

2009

2010 0948

2011 0948 50

2012 094C 53

20130940 51

2014 094E 52

2015 094F 51

2016 0950 IE

2011 0951 E8 0000 E

2018 0954 80 OE OOAO R 01

2019 0959 33 FF

2020 0958 C1 06 0090 R 0000

2021 0961 80 26 008B R 33

2022 0966 80 OE 006B R CO

2023 0968 C6 06 003E R 00

2024 0910 C6 06 0040 R 00

2025 0915 C6 06 003F R 00

2026 091A C6 06 0041 R 00

2021

2026 091F

2029 091F E5 08ED R

2030 0962 E8 02EE R

2031 0985 41

2032 0986 53 FF 02

2033 0969 15 F4

2034 0968 C6 06 003E R 00

2035 0990 80 26 OOAQ R FE

2036 0995 E5 0620 R

2031 0996 1 F

2035 0999 5F

2039 099A 5 ....

2040 0998 59

2041 099C 58

2042 0990 58

2043 099E C3

2044

2045 099F

2046

2041 099F

2048

PAGE

; - - - HARDW....RE INT 08 H -( IRQ LEVEL 6 ) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ­

: DISK INT

I ­

THIS ROUTINE H....NDLES THE DISKETTE INTERRUPT.

; ON EXIT:

;

;

------ -

--

THE INTERRUPT FL.. ....G IS SET IN O>SEEK_STATUS.

- - - - -- -------- - - -­

DISK INT I

STI

PUSH

PUSH

CALL

OR

POP

"OV

OUT

"OV

INT

POP

IRET

PROC F ....R

AX as

005

;~EEK-STATUS.INT-FL .... G

AL.EOI

INT .... OO .....L

AX.09101H

15H

AX

ENTRY POINT FOR ORG OEF51H

RE-EN .... 8L..E INTERRUPTS

S.... VE WORK REGISTER

SAVE REG I STERS

SETUP DATA ADDRESSING

TURN ON INTERRUPT OCCURRED

RESTORE USER IDS I

END OF I NTERRUPT MARKER

I NTERRUPT CONTROL.. PORT

I NTERRUPT POST CODE AND TYPE

GO PERFORM OTHER TASK

RECOVER REG I STER

RETURN FROM INTERRUPT

01 SK INT_' ENDP

; -~~~~~~~-~~~~;;-~~ ~~- ;~~~~~~-~~~~ ~ ;~~~ ~ ~ ~ ~~~~-~~~C~ ~~ ;E~ -;~~~-~;;~-~;-----

;

;

DISKETTE DRIVES ARE ATTAcH TO THE SYSTEM. --------------

-- -- - - - - ---

------

-

--------------------------

- -------------- - - - -­

OSKETTE SETUP PROC

-PUSH AX

PUSH 8X

PUSH

PUSH

PUSH

PUSH

CALL

CX

OX

OR

XOR

NOV

.... ND

NEAR

; SAVE REGISTERS

0 I

OS

ODS

!(tRTC WAIT FLAG,OI

D[ .0T -

; POINT DATA SEGMENT TO 8105 DATA AREA

; NO RTC WAIT, FORCE USE OF LOOP

1 INITIALIZE DRIVE POINTER

WORD PTR o>DSK STATE,O 1 INITIALIZE STATES

('ILASTRATE,NOT-STRT MSK+SENO MSK ; CLEAR START & SEND

OR

MOV

MOV

MOV

MOV

O>LASTRATE,SEND MSK-

('ISEEK STATUS,O-

PMOTOR COUNT, 0

PMOTOR-STATUS,O

POSKETTE_STATUS,O

INITIALIZE SENT TO IMPOSSIBLE

INDICATE RECALIBRATE NEEDED

I NIT I AL I ZE MOTOR COUNT

INITIALIZE DRIVES TO OFF STATE

NO ERRORS

SUPO:

CALL

CALL

INC

CMP

JNZ

MOV

AND

CALL

POP

POP

POP

POP

POP

POP

RET

DSKETTE_SETUP ENDP

DRIVE DET

XL .... T 'OLD

01 -

OI,MAX DRV

SUPO -

PSEEK STATUS.O

PRTC WAIT FLAG,OFEH

SETUP ENOas -

01

OX

CX ex

AX

CODE ENDS

ENO

DE TERM [NE DR [VE

TRANSLATE STATE TO COMPATIBLE MODE

POINT TO NEXT DRIVE

SEE IF DONE

REPEAT FOR EACH DR [VE

FORCE RECAL ISRATE

ALLOW FOR RTC WA [T

VAR [OUS CLEANUPS

RESTORE CALLERS RES I STERS

DISKETTE S-llS

21

22

23

2.

25

26

21

28

2.

30

31

32

33

3.

35

36

31

38

3 •

• 0

"

16

11 ,.

20

"

'3

4.

.5

.,

.8

••

50

14

15

16

11

18

19

80

61

6S

6'

10

11

12

13

81

82

8.

85

86

81

88

8.

'0

51

58

5.

60

61

62

6.

6.

65

66

51

52

53

54

55

56

,.

93

95 .,

.8

1

8

,

10

11

12

13

1

2

6

3

5

•

0000

IBM Personal Comput.r MACRO A• • • ",bl*r

DISK - - - - 06/10/85 FIXED DISK 810S

V.r~,on 2.00 1-1

06-10-85

PAGE 118.121

TITLE DISK - - - - 06/10/85 FIXED DISK BIOS

.286C

.LlST

CODE SEGMENT BYTE PUBL I C

PUBLIC 01 SK 10

PUBLI C OJ SK-SETUP

PUBLI C HD_INT

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTftN

EXTRN

CMOS READ: NEAR

CMOS-WR,ITE:NEAR

DDS:NEAR

E MSG:NEAR

FT180:NEAR

FI18t:NEAR

FI782:NEAR

FI790:NEAR

FI 791 :NE/oR

FD_TBL:NEAR

INT 13H - - - - - - - - - - - - - - - - - - - - - - - - - - ­

FIXED DISK I/O INTERFACE

THIS INTERFACE PROVIDES ACCESS TO 51/4" FIXED DISKS THROUGH

THE IBM FIXED DISK CONTROLLER.

THE 810S ROUTI NES ARE MEANT TO BE ACCESSED THROUGH

SOFTWARE INTERRUPTS ONLY.

THESE LISTINGS ARE INCLUDED

NOT FOR REFERENCE.

ANY ADDRESSES

ONLY

PRESENT IN

FOR' COMPLETENESS.

APPLICATIONS WHICH REFEREf'lCE ANY

ABSOLUTE ADDRESSES WITHIN THE CODE SEGMENTS OF BIOS

VIOLATE THE STRUCTURE AND DESIGN OF BIOS.

INPUT {AHI:: HEX COMMAND VALUE

(AH):: OOH RESET DISK (OL : 80H,81H) / DISKETTE

(AH): 01H READ THE STATUS OF THE LAST DISK OPERATION INTO IAU

NOTE: DL

DL

< 80H 0 I SKETTE

> 80H 0 I SK

(AHI: 02H READ THE DESIRED SECTORS INTO MEMORY

IAHI= 03H WRITE THE bESIRED SECTORS FROM MEMORY

I AH 1= 04H VER I FY THE DES I RED SECTORS

(AH) = 05H FORMAT THE DES I RED TRACK

{AH 1= 06H UNUSED

(AHI = 07H UNUSED

{AH)::: 08H RETURN THE CURRENT DRIVE PARAMETERS

{AHI::: 09H INITlAL.IZE DRIVE PAIR CHARACTERISTICS

INTERRUPT 41 PO I NTS TO DATA BLOCK FOR DR I VE

INTERRUPT 46 POINTS TO DATA BLOCK FOR DRIVE

(AH I::: OAH READ LONG

(AHI::: OBH WRITE LONG

(AHI: OCH SEEK

(READ & WRITE LONG ENCOMPASS 512 + 4 BYTES ECCI

IAHI:: ODH ALTERNATE DISK RESET (SEE Dli

IAH)::: OEH UNUSED

I AH) = OFH UNUSED

IAH)= IOH TEST DRIVE READY

IAHI", IIH RECALIBRATE

{AHI:: 12H UNUSED

IAHI::: 13H UNUSED

I AH I '" 14H CONTROLLER INTERNAL 0 I AGNOST [C

(AHI:: ISH READ DASD TYPE

REGISTERS USED FOR FIXED DISK OPERATIONS

(DU

(QH)

ICHI

(CL I

DRIVE NUMBER

HEAD NUMBER

CYLINDER NUMBER

SECTOR NUMBER

(80H-8IH FOR DISK. VALUE CHECKED I

(0-15 ALLOWED. NOT VALUE CHECKED)

(0-1023, NOT VALUE CHECKED I {SEE CU

( I-I 7. NOT VALUE CHECKED)

NOTE: HIGH 2 81TS OF CYLINDER NUMBER ARE PLACED

IN THE HIGH 2 81TS OF THE CL REGISTER

110 BITS TOTALl

(All

(ES:BX)

NUMBER OF SECTORS (MAXIMUM POSSIBLE RANGE, 1-80H,

FOR READ/WRITE LONG 1-19H)

ADDRESS OF BUFFER FOR READS AND WRITES.

(NOT REQU I RED FOR VER I FY)

FORMAT IAH=51 ES:BX POINTS TO A 512 BYTE BUFFER. THE FIRST zeISECTORS/TRACKI BYTES CONTAIN F,N FOR EACH SECTOR.

F = OOH FOR A GOOD SECTOR

N

SOH FOR A BAD SECTOR

=

SECTOR NUMBER

FOR AN INTERLEAVE OF 2 AND 11 SECTORS/TRACK

THE TABLE SHOULD BE:

DB

DB

DB

OOH, 0 1 H, OOH, OAH, OOH, 02H, OOH, OBH, OOH, 03H,OOH, OCH

OOH, 04H, OOH, OOH, OOH, 05H. OOH, OEH, OOH, 06H. OOH. OFH

OOH,01H,OOH,IOH,OOH,08H,OOH,IIH,OOH,09H

5-116 DISK

168

169

170

171

172

173

17.

175

176

, 77

178

179

160

161

162

163

16.

165

166

167

'"0

181

182

183

18.

185

186

187

1 "

" 2

,.3

''­

,.5

,.6

,.7

" 8

,.9

150

151

152

153

>5.

>55

156

157

>58

, 59

99

,00

",

" 2

".

1 05

106

107

108

1 09

110

111

112

113 II.

115

126

127

128

129

130

131

132

133

13.

135

136

137

138

139

140

116

117

" 8

,,9

120

121

122

123

12.

125

IBM Person.l Computer MACRO Ass.,.bler

DISK - - - - 06/10/85 FIXED DISK BIOS

Version 2.00 1-2

06-10-85

PAGE

OUTPUT

AH = STATUS OF CURRENT OPERAT I ON

STATUS BITS ARE DEFINED IN THE EQUATES BELOW

CY = 0 SUCCESSFUL OPERATION IAH=O ON RETURN)

CY = I FAILED OPERATION (AH HAS ERROR REASON)

NOTE: ERROR llH INDICATES THAT THE DATA READ HAD A RECOVERABLE

ERROR WHICH WAS CORRECTED BY THE ECC ALGORITHM. THE DATA

IS PROBABLY GOOD, HOWEVER THE BIOS ROUTINE INDICATES AN

ERROR TO ALLOW THE CONTROLL I NG PROGRAM A CHANCE TO DEC I DE

FOR ITSELF. THE ERROR MAY NOT RECUR IF THE DATA IS

REWRITTEN.

IF DRIVE PARAMETERS WERE REQUESTED 10L

INPUT:

(DL)

=

DR I VE NUMBER

>= SOH),

OUTPUT I

IDL) • NUMBER OF CONSECUTIVE ACKNOWLEDGING DRIVES ATTACHED (1-21

(DHI

(CHI

(CONTROLLER CARD ZERO TALLY ONLY)

=

MAXIMUM USEABLE VALUE FOR HEAD NUMBER

=

MAXllrolUM USEABLE VALUE FOR CYLINDER NUMBER

(CLl = MAX IIrolUM USEABLE VALUE FOR SECTOR NUMBER

AND CYLINDER NUMBER HIGH BITS

IF READ DASD TYPE WAS REQUESTED,

AH .. 0 NOT PRESENT

1 DISKETTE NO CHANGE LINE AVAILABLE

2 DISKETTE CHANGE LINE AVAILABLE

3 FIXED DISK

CX,DX = NUMBER OF 512 BYTE BLOCKS WHEN AH = 3

REGISTERS WILL BE PRESERVED EXCEPT WHEN THEY ARE USED TO RETURN

INFORMATION.

NOTE: IF AN ERROR IS REPORTED BY THE DISK CODE, THE APPROPRIATE

ACTION IS TO RESET THE DISK, THEN RETRY THE OPERATION.

OOFF

OOEO

DOCe

OOBB

OOAA

OOSO

0040

0020

0011

00 I a

OOOB

OOOA

0009

0007

0005

0004

0002

0001

SENSE FAIL

NO ERR

WRITE FAULT

UNOEF-ERR

NOT ROY

TIME OUT

EQU

EQU

EQU

EQU

EQU

EQU

8AD SEEK

BAD-CNTLR

EQU

EQU

DATA CORRECTED EQU

BAD ECC EQU

BAD-TRACK EQU

BAD-SECTOR

DMA -BOUNDARY

INIT FAIL

EQU

EQU

EQU

BAD RESET EQU

RECORD NOT FND EQU

BAD ADDR MARK

BAD::::CMD -

EQU

EQU

OFFH

OEOH

OCCH

OBBH

OAAH

80H

'OH

20H

"H

1OH

OBH

OAH

09H

07H

05H

O.H

02H

01H

NOT IMPLEMENTED

STATUS ERROR/ERROR REGI STER=O

WRITE FAULT ON SELECTED DRIVE

UNDEF I NED ERROR OCCURRED

DR I VE NOT READY

ATTACHMENT FAILED TO RESPOND

SEEK OPERA T I ON F A I LEO

CONTROLLER HA S FA I LED

ECC CORRECTED DATA ERROR

BAD ECC ON 0 I SK R:EAD

NOT IMPLEMENTED

BAD SECTOR FLAG DETECTED

DATA EXTENDS TOO FAR

DR I VE PARAMETER ACT J V I TY FA I LED

RESET FAILED

REQUESTED SECTOR NOT FOUND

ADDRESS MARK NOT FOUND

BAD COMMAND PASSED TO DISK I/O

F I XED 0 I SK PARAMETER TABLE

THE TABLE IS COMPOSED OF A BLOCK DEFINED AS:

+

+0

+2

+3

+5

+1

+9

12

.. 14

.. 15

(' WORDI

(I BYTEI -

(1 WORD)

~! BYTE)

MAXIMUM NUMBER OF CYLINDERS

MAXIMUM NUMBER OF HEADS

(1 WORD I NOT USED/SEE PC-XT

STARTING WRITE PRECOIrolPENSATION CYL

MAXIMUM ECC DATA BURST LENGTH

(I BYTE) CONTROL BYTE

BIT

BIT

BIT

7 DISABLE RETRIES -OR­

6 DISABLE RETRIES

3 MORE THAN e HEADS

13 BYTESI- NOT USED/SEE PC-XT

II WORol LANDING ZONE

(I BYTE) NUMBER OF SECTORS/TRACK

(I BYTE) RESERVED FOR FUTURE USE

TO DYNAM I CAl..L Y DEF I NE A SET OF PARAMETERS

BUILD A TABLE FOR UP TO 15 TYPES AND PLACE

THE CORRESPONDING VECTOR INTO INTERRUPT 41

FOR DR I VE 0 AND INTERRUPT 46 FOR OR I VE I.

DISK 5-117

ISN p.,.sonal Comput.,. NACRO A5sembl.,.

DISK ----Ob/10/85 FIXED DISK SIOS

V.ra,on 2.00

188

18.

,.,

" 2

,.3

19.

I . ,

,.,

2"

2.2

2.3 00 1 a

2"

2.5

0020

0030

2'6

2"

2'8

0040

0050

Dab a

24' 0010

250 :: 0090

251

252

254

255

:: 009 t

=

0001

253 :: 0002

;. 0008

256 :: 0002

251 " 0002

258

0025 25'

260

261

ObOO o t 00

262

263

264

265

266

261

268

26.

0008

22'

225

226

221

228

22.

230

231

232

233

201

208

20.

210

211

212

213

21.

215

" 8

I ••

200

201

202

203

20.

20.

20.

21.

211

=

OIFO

218 • 03F6

219

220

221

222

223

000 I

0002

0004

0008

DOlO

0020

0040

0080

=

000 I

=

0002

=

0004

23'

235

236

231

238

23.

2.0

=

00 10

=

0040

=

0080

PAGE

1- - - - - - -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ­

;

HARDWARE SPECIFIC VALUES

CONTROLLER I 10 PORT

> WHEN READ FROM:

HF PORHO READ DATA (FROM CONTROLLER TO CPUI

HF-PORT+I GET ERROR REGISTER

HF-PORT+2 GET SECTOR COUNT

HF-PORT+3 GET SECTOR NUMBER

HF-PORT+4 GET CYLINDER LOW

HF-PORT+5 GET CYLINOER HIGH (2 BITSI

HF-PORT+b GET SIZE/DRIVE/HEAD

HF:PORT+l GET STATUS REGISTER

> WHEN WR I TTEN TO I

HF PORT+O WRITE DATA (FROM CPU TO CONTROLLER)

HF-PORT+ I SET PRECOMPENSATION CYLINDER

HF-PORT +2 SET SECTOR COUNT

HF-PORT +3 SET SECTOR NUMSER

HF-PORT+4 SET CYLINDER LOW

HF-PORT+5 SET CYLINDER HIGH (2 BITS)

HF-PORT+b SET SIZE/DRIVE/HEAD

HF:PORT+1 SET COMMAND REGISTER

HF PORT

HF:REG_PORT

;

-----

ST ERROR

ST-INDEX

ST-CORRCTD

ST-DRQ

ST-SEEK COMPL

ST-WRT FL T

ST-READY

ST:BUSY

ERR DAM

ERR-TRK a

ERR:ABORT

ERR

-

ID iRR DATA ECC

ERR:BAD_BLOCK

RECAL CMD

READ eMD

IR ITE CMD

VER IF)' CMD

FMTTRI'::-CMD

INIT diD

SEEK-CND

01 AG-CMD

SET fSARN CMD

NO RETRIES

ECC MODE

SUFFER_NODE

MAX FILE

S_MAX_FILE

DELAY I

DELAY-2

DELAY:3

HF _FAIL

EOU

EOU

EOU

EOU

EOU

EOU

EOU

EOU

EOU

EOU a

IFOH

03FbH

STATUS REG) STER

EOU

EOU

EOU

EOU

EOU

EOU

EOU

EOU

0000000IS

000000 1 as

00000 1OOB

0000 I ODDS

000 1 OOOOB

00100000S

OIOOOOOOB

10000000B

ERROR REGISTER

OOOOOOOIS

0000001 DB

00000 t OOB

0000 I OOOS

000 I 00009

OOIOOOOOB

010000009

100000009

1-3

Ob-IO-85

; 0151':: PORT

;

: ECC CORRECT I ON SUCCESSFUL

I

I SEEK COMPLETE

IRITE FAULT

DATA ADDRESS MARK NOT FOUND

TRACK a

NOT FOUND ON RECAL

ASORTED COMMAND

NOT USED

10 NOT FOUND

NOT USED

EOU

EOU

EOU

EOU

EOU

EOU

EOU

EOU

EOU

EOU

EOU

EOU

EOU

EOU

EOU

EOU

EOU

000 t OOOOS

00 I OOOOOS

00 11 OOOOS a

I OOOOOOS

OIOIOOOOS

011000008 all t 00008

100 f 00008 tOOl 000 1 B

0000000 IS

OOOOOOIOS

0000 I 0008

25"

ObOOH

01 DOH

EOU 08"

COMMAND SLOCK REFERENCE

EOU 8YTE PTR [SP]-8

DRIVE RECAL

READ

WRITE

VERIFY

FORMAT TRACK

110HI

120H)

130HI

(40HI

(SOH)

INITIALIZE IbOH)

SEEI'::

01 AGNOST I C

DRIVE PARMS t10H)

(90H)

(9IH)

CMD MODIFIER (OIH)

CND MODIFIER (02H)

CND NODIFIER 108H)

DELAY FOR OPERAT I ON COMPLETE

DELAY FOR READY

DELAY FOR DATA REQUEST

CMOS FLAG IN 8YTE OEH

ClCMD SLOCK REFERENCES SLOCI':: HEAD ! N SS

(SpT POINTS TO COMMAND SLOCK TA IL

AS DEF J NED BY THE -ENTERPARMS

5-118 DISK

IBM Personal Computer MACRO Allilembler

DISK - - - - 06/10/85 nXEO DISK BIOS

VersIon 2.00 1-'

06-10-aS

270

271

272

273

274

275

27'

277

278

279

280

281 0000

282 0000 FA

283 000 I 88 ~--R

28. 0004 8E 08

285 0006 A I 004C R

28. 0009 A3 0100 R

287 OOOC A I 004E R

288 OOOF A3 0102 R

28' 0012 C7 06 004C R 0lA9 R

2'0 0018 8C OE 004E R

2"

2'2

OOIC C7 06 0108 R 06CD R

0022 ac OE 01DA R

2.3 0026 C7 06 0104 R 0000 E

2 •• 002C 8C OE 0106 R

2 •• 0030 C7 06 0118 R 0000 E

2" 0036 8C OE 011A R

2.7 003A E4 AI

2.8 003C 24 8F

299 003E E8 00

300 0040 EEl AI

30 I 0042 E4 21

302 0044 24 FB

303 0046 EB 00

30' 0048 E6 21

305

30. 004A FB

307

308 0048 IE

309 004C 01

310 0040 E8 0000 E

311 0050 C6 06 0074 R 00

312 0055 C6 06 0075 R 00

313 005A CEI 06 0076

31' 005F BO 8E

315 0061 E8 0000 E

31' 0064 8A EO

317 0066 24 CO

318 0066 74 03

319 006A E9 00F8 R

320 0060

321 0060 80 E4 F7

R 00

322 0070 80 8E

323 0012 E8 0000 E

32. 0075 80 92

325 0077 E8 0000 E

32' 007A C6 06 0077 R 00

327 007F 8A Da

328 0061 25 OOFO

32. 0064

330

74 72

331 00a6 3C FO

332 0088 75 10

333

33' ooaA 80 99

335 ooac E8 0000 E

33. OOaF 3C 00

337 0091 74 65

338 0093 3C 2F

339 0095 77 61

3., 0097 CI EO 04

009A

3'2 009A 05 FFFO E

3'3 0090 26: A3 0104 R

3 •• OOAI C6 06 0075 R 01

3.5 00A6 8A C3

3 • • 00A8 CO EO 04

3.7 OOAB 14 2A

3'8 OOAD B4 00

3.9

350 OOAF 3C FO

351 OOBI 75 10

352

353 00B3 BO 9A

35' 00B5 E8 0000 E

355 00B8 3C 00

35. OOBA 74 IB

357 OOBC 3C 2F

358 OOBE 77 17

359 OOCO Cl EO 04

3.,

00C3

00C3 05 FFFO E

3.2 00C6 8B 08

3.3 ooce

2E: 83 3F 00

3 •• OOCC 14 09

3.5 OOCE 26: A3 0118 R

3 •• 0002 C6 06 0075 R 02

3.7 0007

3.8 0007 82 80

3 •• 0009 84 14

370 OODB CD 13

371 0000 72 lA

372 OODF A I a06C

373 00E2 88 08

374 00E4 05 0444

R

375 00E7 88 C8

37. 00E9 E8 0 I 04 R

377 OOEC 80 3E 0075 R 01

378 OOFI 76 05

37. 00F3 B2 81

380 OOFS Ea 0104 R

381 OOFe

382 00F8 C3

383

PAGE

1------------- - - ------- -------------------------------------- --­

; FIXED DISK 110 SETUP

! -

ESTABl I SH TRANSFER VECTORS FOR THE FI XED 01 SK

1 PERFORM POWER ON DIAGNOSTICS

•

; SHOULD AN ERROR OCCUR A ~1701~ MESSAGE IS DISPLAYED

I - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -­

ASSUME CS:CODE,DSIABSO I WORK OFF OS REGISTER

DISK SETUP

ClI

MOV

MOV

MOV

MOV

MOV

MOV

MOV

MOV

MOV

MOV

MOV

MOV

MOV

MOV

IN

ANa

JMP

OUT

IN

ANa

JMP

OUT

1I:

L2.

ANa

MOV

CALL

~OV

CALL

OOV

OOv

ANa

JZ

COP

JNE

OOv

CALL

COP

JE eMP

JA

SHL

AOO

OOV

OOV

MOV

SHL

JZ

MOV eMP

JNE

MOV

CAll eMP

JE eMP

JA

SHL l3:

ADD

MOV eMP

JE

"OV

MOV

L',

MOV

OOV

INT

.JC

OOV

OOV

AOO

MOV

CAll

COP

JBE

MOV

CALL

POD DONEz

RET

PROC

AL.OFOH

L2

Al,OFOH

L3

NEAR

AX,ABSO

DS,AX

AX, WORD PTR OORG VECTOR

WORD PTR 4!ODISK VECTOR,AX

:~R~O~~RP!~

I

;~ReE~~g~~~: ~X

WORD PTR IIORG VECTOR, OFFSET 0 I SK 10

WORD PTR OORG-VECTOR+2,CS

GET ABSOLUTE SEGMENT

SET SEGMENT REG) STER

GET 0 I SKETTE VECTOR

INTO INT 40H

F (XED 0 I SK HANDLER

WORD PTR OHDISK INT ,OFFSET HD INT

WORD PTR OHDISK-INT+2,CS

WORD PTR OHF TBe VEC, OFFSET FD TBl

FIXED DISK INTERRUPT

PARM TABLE DR I VE eo

WORD PTR OHF-TBl-VEC+2,CS

WORD PTR OHFT TBC VEC,OFFSET FD TBl

WORD PTR OHFI-TBL-VEC+2,CS

Al.INTBOl -

PARM TABLE DRIVE 8]

; TURN ON SECOND INTERRUPT CHIP

AL,OBFH

"2

INTBOI,Al

Al,INTAOI

Al.OFBH

"2

INTA01,Al

STI

ASSUME DS:DATA,ES:ABSO

PUSH as

POP

CALL

MOV

ES

005

ODISK STATUS I

,a

MOV

MOV

MOV

OHF NOM,O

OCONTROL BYTE, a

Al.CMOS DIAG+NMI

CAll

MOV

ANa

JZ

JMP

CMOS READ

AH,AC

AL.BAD BAT+BAD CKSUM

LI -

POD_DONE

AH,NOT HF FAIL

AL.CMOS DTAG+NMI

CMOS WRITE

Al.CMOS DISK+NMI

CMOS READ

IIPORT OFF.O

Bl,AL-

AX,OOOFOH

POD_DONE

AL.CMOS DISK I+NMI

CMOS READ -

Al,O-

POD DONE

Al.47

POD_DONE

AX.4

AX. OFFSET FD TBl ]00

WORD PTR OHF-TBl VEC. AX

OHF NUM,] -

Al.Bl

Al,4

SHORT l4

AH,O

Al,CMOS DISK 2+NMI

CMOS REAO

Al,O-

L'

Al,47

L'

AX,4

AX, OFFSET FD TBl - [60

BX ,AX

WORD PTR CS: [BX) ,0

L'

WORD PTR OHFI TBl VEC,AX

OHF_NUM.2 -

Dl.80H

AH,14H

13H

CTl ERR X

AX, 'iTi MER lOW

BX, AX

AX.o-182

CX,AX

HD RESET ]

4!OHF NUM. T

POD-DONE

DL.8IH

HD_RESET_I

LET I NTERRUPTS PASS THRU TO

SECOND CHIP

MOVE ABSO PO I NTER TO

EXTRA SEGMENT PO INTER

ESTABLISH DATA SEGMENT

RESET THE STATUS INDICATOR

ZERO NUMBER OF F I XED 0 [ SK S

CHECK CMOS VALIDITY

SAVE CMOS FLAG

CHECK FOR VAL 10 CMOS

I CMOS NOT VALID -- NO FIXED DISKS

ALLOW Fl XED 01 SK IPL

WRITE IT BACK

ZERO CARD OFFSET

SAVE F I XED DISK BYTE

GET FIRST DRIVE TYPE AS OFFSET

NO FIXED DISKS

CHECK FOR EXTENDED DR I VE TYPE BYTE USE

USE DRIVE TYPE I --> 14 IF NOT IN USE

GET EXTENDED TYPE FOR DR I VE C:

FROM CMOS

I S TYPE SET TO ZERO

EXIT IF NOT VALID AND NO FIXED DISKS

IS TYPE WITHIN VALID RANGE

EXIT WITH NO FIXED DISKS IF NOT VALID

ADJUST TYPE TO HIGH NIBBLE

COMPUTE OFFSET OF FIRST DRIVE TABLE

SAVE IN VECTOR POINTER

AT LEAST ONE DR I VE

; GET SECOND DR I VE TYPE

, ONLY ONE DRIVE

CHECK FOR EXTENDED

USE DRIVE TYPE I

DR I VE TYPE BYTE USE

--> 14 IF NOT IN USE

GET EXTENDED TYPE FOR DR I VE 0:

FROM CMOS

I S TYPE SET TO ZERO

SKIP IF SECOND FIXED DISK NOT VALID

IS TYPE WITHIN VALID RANGE

SKIP IF NOT VALID

AD..JUST TYPE TO HIGH NIBBLE

COMPUTE OFFSET FOR SECOND F I XED

CHECK FOR ZERO CYLINDERS IN TABLE

SKIP DRIVE IF NOT A VALID TABLE ENTRY

TWO DR I YES

CHECK THE 'CONTROllER

USE CONTROllER 0 I AGNOST I C COMMAND

CAll BIOS WITH DIAGNOSTIC COMMAND

DI SPLAY ERROR MESSAGE IF BAD RETURN

GET START TIMER COUNTS

60 SECONDS· 18.2

SET UP DR I VE 0

WERE THERE TWO DRIVES?

NO-ALL DONE

SET UP DR I VE I

0 I SK

DISK 5-119

IBM Personal Computer MACRO Assembler

DISK - - - - - 06/10/85 FIXED DISK 810S

Veraton 2.00

384

385

386 00F9

381 00F9 BE 0000 E

388 OOFC E8 a I 7C R

389 OOFF E8 0000 E

390 0102 E8 F4

391

392

393 0104

394 010-4 53

395 0105 51

396 0106 B4 09

391 0108 CD 13

398 OIOA 72 06

399 OIOC 84 II

ADO OIOE CD 13

401 0110 73 19

402 0112 E8 alBA R

403 0115 73 EF

404 0117 BE 0000 E

405 011A F6 C2 01

406 01107551

401 011F BE 0000 E

408 0122 E8 011e R

409 0125 EB 4F

410 0121 B4 00

411 0129 CD 13

412 012B B4 08

413 0120 8A OA

414 012F CD 13

415 0131 12 36

416 0133 89 OE 0042 R

411

0137 8A 03

418 0139 B8 0401

419 013C CO 13

420 013E 13 39

421 0140 80 FC OA

422 0143 14 34

423 014580 FC 11

424 0148 14 2F

425 014A 80 FC 10

426 0140 74 2A

421 014F E8 OISA R

428 0152 12 17

R 429 0154 8B OE 0042

430 0158 8A CI

431 o

15A 24 3F

432 015C FE C8

433 015E 14 C1

434 0160 80 EI CO

435 0163 OA CIS

436 0165 89 OE 0042 R

431 0169 EB CE

438 016B 8E 0000 E

439 016E F6 C2 01

440 0171 15 03

441 0173 8E 0000 E

442 0116

443 0116 E8 0000 E

444 0179

445 0179 59

446 011A 58

441 011B C3

448 011C

449

450 011C

451 o

I1C B8 8ESE

452 017F E8 0000 E

453 0182 OC 08

454 0184 86 EO

455 0186 E8 0000 E

456 0189 C3

451 o

18A

45B

459 o

18A

460 01 BA 58

461

462

0188 59 o

18C 58

463 0180 53

464 o

18E 51

465 018F 50

466 0190 A I 006C R

401

468

469 0193 38 09

410 0195 12 06

411 0191 38 08

412 0199 72 OC

413 0198 EB 04

414 0190 38 C3

415 019F 72 04

A16 OIAI 38 Ct

411 0lA3 72 02

41B

419

4BO

4BI o lAS F9 o

IA6 C3 o tA1 FB

482 01 A8 C3

4B3 0lA9

4BA

4B5 0lA9

1-----

POD ERROR

CTL ERRXs

MOV

CALL

CALL

JMP

St ,OFFSET F171S2

SET FAIL

E MSG

Poa_DONE

CNP

Je

CMP

Je

JMP

TCHK I: CMP

JB

TCHK2: CMP

Je

TCHKNG: STC

RET

TCHKG: CLC

POO_ TCHK

RET a I SK_SETUP

HO RESET I

PUSH

PUSH

RES_I: MOV

INT

Je

MOV

INT

JNe

RES_2: CALL

JNe

RES_FL: MOV

TEST

IN'

MOV

CALL

JMP

RES_RS: MOV

INT

RES_CK: MOV

MOV

INT

Je

MOV

MOV

RES_3: MOV

INT

JNC

CMP

JE

CMP

JE

CMP

JE

CALL

JC

MOV

MOV

ANa

OEC

JZ

AND

OR

NOV

JNP

RES_ER: MOV

TEST

IN'

MOV

RES_EI:

CALL

RES_OK:

POP

POP

RET

HO_RESET_l

SET FAIL

MOV

CALL

OR

XCHG

SET_FAIL

CALL

RET

POD TCHK

POP

POP

POP

PUSH

PUSH

PUSH

MOV

1-5

06-10-85

CONTROLLER ERROR

DO NOT IPL FROM DISK

DISPLAY ERROR AND SET [8P) ERROR FLAG

PROC ex

CX

NEAR

AH,09H

I3H

RES 2

AH,IIH

I3H

RES CK

POD-TCHK

RES-t

SI,OFFSET FI781

DL,I

RES EI

51 ,OFFSET FI780

SET FAIL

SHORT RES EI

AH,OOH -

I3H

AH,08H

8L,oL

I3H

RES ER

WORD PTR tlNEC STATUS,CX

DL,BL

AX,0401H

I3H

RES OK

AH, BAD SECTOR

RES OK­

AH, OAT A CORRECTED

RES OK ­

AH ,BAD ECC

RES OK­

POo-TCHK

RES-ER

CX,WoRO PTR tlNEC STATUS

AL,CL

AL,3FH

AL

RES RS

CL,aCOH

CL,AL

WORD PTR tlNEC STATUS,CX

RES 3 -

51 ,OFFSET FI791

DL, I

RES EI

51 ,OFFSET F1190

E_MSG cx ex

ENDP

PROC NEAR

AX,X·(CMOS DIAG+NMI)

CMOS READ ­

AL,HF FAIL

AH,AL -

CMOS_WRITE

ENDP

PROC NEAR

AX

CX

BX ex ex

AX

AX ,<PT I MER_LOW

BX,CX

TCHK I

BX ,AX

TCHKG

SHORT TCHK2

AX,BX

TCHKNG

AX,ex

TCHKG

SAVE TIMER LIMITS

SET OR! VE PARAMETERS

RECALIBRATE DRIVE

DRIVE OK

CHECK T I ME OUT

INDICATE DISK 1 FAILURE

INDICATE DISK 0 FAILURE

DO NOT TRY TO J PL DISK a

RESET THE DR! VE

GET MAX CYL1NDER.HEAD,SECTOR

SAVE DR I VE CODE

SAVE MAX CYLINDER, SECTOR

RESTORE OR I VE CODE

VER I FY THE LAST SECTOR

VERIFY OK

OK ALSO IF ,JUST 10 READ

CHECK FOR T I ME OUT

FAILED

GET SECTOR ADDRESS. AND CYLI NDER

SEPARATE OUT SECTOR NUMBER

TRY PREY IOUS ONE

WE"VE TRIED ALL SECTORS ON TRACK

KEEP CYLINDER BITS

MERGE SECTOR WITH CYL INDER BITS

SAVE CYLINDER, NEW SECTOR NUMBER

TRY AGAIN

INDICATE DISK I ERROR

INDICATE DISK 0 ERROR

D [ SPlA Y ERROR AND SET I BP ) ERROR FLAG

RESTORE TIMER LIMITS

GET CMOS ERROR BYTE

SET DO NOT I PL FROM 0 I SK FLAG

SAVE IT

PUT IT OUT

CHECK FOR 30 SECOND T I ME OUT

SAVE RETURN

GET TIME OUT LIMITS

I AND SAVE THEM AGA I N

RESTORE RETURN

AX

8X

CX

CURRENT TI ME

=

START TIME

ENO TIME

START < END

END < START < CURRENT

END, CURRENT <: START

CURRENT <: START < END

START < CURRENT < END

OR CURRENT < END START

CARRY SET INDICATES TIME OUT

INDICATE STILL TIME

ENOP

ENDP

5-120 DISK

IBM Personal Computer Iro4ACRO Ass.mbler

DISK - - - - 06/10/85 FIXED DISK BIOS

48.

481

488

489

490

491 01A9

492

493

494

OlA9 80 FA 80

01 AC 73 05

495 alAE CD 40

496 alBa

497

4 ••

0 I BO CA 0002

499 0lB3

500 0lB3 F8

501 0lB4 OA E4

502 a I 86 15 09

503 0188 CO 40

504 alBA 2A E4

505

506

OIBC 80 FA 61

01BF 11 EF

501 0 IC 1

508 01Cl 80 FC 06

509 01C4 15 03

510 01 C6 E9 0393 R

511 01C9 80 FC 15

512 OICC 15 03

513 OICE E9 0353 R

5'4

SIS OIDI

516 OIDI C6 0006 00

511 01D553

518 0106 51

519 0107 52

520 0108 IE

521 0109 06

522

523 aiDA 56

0108 57

524 0 IDC OA E4

525 aIDE 15 02

526 OlEO B2 80

521 01 E2 E8 0225 R

528 0 I E5 E8 0000 E

529 0lE8 8A 26 0014 R

530 alEC 80 FC 01

531 OlEF F5

532

533

OIFO SF

OIFI 5E

534 0lF2 07

535 QIF3 IF

536 a

IF4 5A

537 0lF5 59

538 0lF6 58

539 0lF7 C9

540 OIF! CA 0002

541 OIFB

542

543 01 FB

544 0 I FB 02C 1 R

545 01FD 0315 R

546 OIFF 031E R

541 0201 0325 R

548 0203 032C R

549 0205 033E R

550 0201 0289 R

551 0209 0289 R

552 0208 0289

553 0200 03F 1

R

R

554 020F 0423 R

555 021 I 042A R

556 0213 0431 R

557 0215 02CI R

558 0217 0289 R

559 0219 0289 R

560 021B 044F R

561 02100466 R

562 021F 0289 R

563 0221 02B9 R

564 0223 048E R

565 002A

5bb

561 0225

568 0225 E8 0000 E

569 0228 80 FC 0 I

510 022B 75 03

571 0220 E9 0315 R

572 0230

573 0230 C6 06 0014 R 00

574 0235 53

575 0236 8A IE 0015 R

576 023A 50

517 023B 80 E2 1F

578 023E 3A DA

519 0240 16 15

580

581

0242 06

0243 E8 0681 R

582 0246 26 I 88 41

583 024A C 1 E8 02 as

584 O?4D 88 46 F8

585 0250 26: 8A 41 06

586 0254 52

581 0255 8A 03F6

566 0258 EE

569 0259 5A

590 025A 07

591 0258 6A 26 001& R

592 025F 80 E4 CO

593 0262 OA EO

594

595

0264 86 2& 001& R

0268 56

596 0269 88 46 F9

597 026C 50

598 02&0 8A C I

599 026F 24 3F

VersIon 2.00 '-b

06-10-65

PAGE

;------­

FIXED DISK BIOS ENTRY POINT

DISK 10 PROC

ASSUME e"p

JAE

INT

RET

AI.

STI

DR

JNZ

INT

SUB e"p

JA

A2:

A31 e"p

JNZ

J"P

CMP

JNZ

J"P

A4;

AS:

ENTER

PUSH

PUSH

PUSH

PUSH

PUSH

PUSH

PUSH

OR

JNZ

NOV

CALL

CALL

NOV

CMP e"e

POP

POP

POP

POP

POP

POP

POP

LEAVE

RET

DISK 10 ENDP

M I

Iro4IL

LA8EL

OW ow ow ow ow ow ow ow ow ow ow ow ow

OW ow ow ow ow ow ow ow

EQU

01 SK 10 CaNT

-CALL eMP

JNZ

JMP

SUOI

NOV

PUSH

MDV

PUSH

AND eMP

J8E

PUSH

CALL

MOV

SHR

NOV

NOV

PUSH

MOV

OUT

POP

PDP

NOV

AND

OR

MaV

PDP

MOV

PUSH

NOV

AND

FAR

DS;DATA.ES:NOTHI NG

OL.60H

AI

40H

; TEST FOR FIXED DISK DRIVE

; YES. HANDLE HERE

; 0 I SKETTE HANDLER

; BACK TO CALLER

I ENABLE INTERRUPT S

AH.AH

A2

40H

AH.AH

DL. (60H + S_Iro4AX_FILE -

RET_2

I)

RESET NEC WHEN AH=O

A.... 06H

A3

GET PARM N

AH.T5H -

A4

READ_DASD_TYPE

GET PARAMETERS IS A SPECIAL CASE

READ DASo TYPE I S ALSO

SAVE

SAVE REGISTERS 04RING OPERATION

(BP) AND ·MAKE ROOM FOR CtCIro4D BLOCK

IN THE STACK. THE COhiMAND BLOCK-IS:

.CMD_8LOCK == BYTE PTR [8P]-~

.,0

BX ex ox

OS

S.

01

AH.AH

A5

DL.80H

DISK 10 CONT

DDS -

AH.OOlSK STATUS!

AH.I -

01

S.

ES

Os

OX ex

8X

WORD o

[SK RESET

RETURN STATUS

DISK READ

DISK-WRITE

01 SK-VERF

FMT TRK

BAD-COMMAND

8AD­

COM~AND

8AD-COMIro4AND

INIT DRY

RD LONG

WR-LONG

DISK SEEK

DISK-RESET

8AD COMMAND

BAD-COMMAND

TST-RDY

HDISK RECAL

8AD COMMAND

BAO-COIro4I.1AND

CTLR DIAGNOSTIC

1-1011­ .

PROC

DDS

~EAR

AH.OIH

Suo

RETURN_STATUS

IIICMD 8LOCK + ! • AL

AX -

AL,CL

AL.3FH

CHECK FOR RESET

FORCE DR I VE 80 FOR RESET

PERFORM THE OPERAT I ON

ESTABLISH SEGMENT

GET STATUS FROt04 OPERATION

SET THE CARRY FLAG TO'INDICATE

SUCCESS OR FAILURE

RESTORE REG I STERS

AD..JUST (SP) AND RESTORE (BP)

THROW AWAY SAVED FLAGS

FUNCT I ON TRANSFER TABLE

OOOH

00 IH

002H

003H

004H

005H

006H FORMAT 8AD SECTORS

001H FORMAT DRIVE

006H RETURN PARAMETERS

009H

OOAH

OOBH

OOCH

OODH

OOEH READ 8UFFER

OOFH WR I TE BUFFER a

I OH

OIIH

Ol2H MEMORY DIAGNOSTIC

Ol3H DRIVE DIAGNOSTIC

014H CONTROLLER DIAGNOSTIC

ESTABLISH SEGMENT

RETURN STATUS

ClDISK STATUSI.O

8X -

BL.«IHF NUM

AX -

DL.1FH

BL,DL

BAD COMMAND pop

ES -

GET VEC

AX.WORD PTR ES: [ax] (5]

AX.2

""CNO BLOCK. AL

AL.8YTE PTR E5:(8XJI81

OX

DX.HF REG PORT

DX.A.L­ -

OX

ES

AH.OCONTROL ~YTE

AH.OCOH -

AH.AL

RESET THE STATUS INDICATOR

SAVE DATA ADDRESS

GET NUM8ER OF DR I VES

GET DRIVE AS 0 OR 1

INVALID DRIVE

GET DISK PARAMETERS

GET WRITE PRE-COMPENSATION CYLINDER

GET CONTROL BYTE MOD I F I ER

; SET EXTRA HEAD OPTION

SET EXTRA HEAD OPT I ON IN

CONTROL 8YTE

I SECTOR COUNT

GET SECTOR NUMBER

DISK 5-121

1-7

06-10-85

18104 Personal COlllputer MACRO Assembler

DISK - - - - 06110/55 FIXED DISK 8105

Version 2.00

600 0271 88 46 FA

601 0274 88 6E F8

602 0277 8A Cl

603 0279 CO E8 06

604 027C 88 46 FC

605 027F 8A C2

606 0281 CO EO 04

607 0284 80 E6 OF

608 0287 OA C6

609 0289 OC ...

0

6 I 0 02e8 88 46 FD

6 j 1 02SE 58

612 02SF 50

6 I 3 0290 5 ... C4

614 0292 32 E4

615 029401 EO

616 0296 88 F'O

61 1 0295 3D 002 ...

618 029873 lA

619 0290 58

620 029E 58

621 029F 51

622 OZAO 50

623 02A 1 88 C8

624 02A3 C 1 E9 04

625 02A6 8C CO

&26 02A8 03 C 1

627 02AA 8E CO

628 02AC 81 E3 OOOF

&29 0280 58

630 0281 59

631 0282 2E= FF A4 0lF8 R

632 0287

633 0287 58

634 0288 58

635 0289

.

.,

..

636 02B9 C6 06 0074 R 0 I

637 02BE 80 00

638 02CO C3

&39 02C I

...

,

645 02C 1

646 02Cl FA

647 02C2 E4 AI

648 02C4 EB 00

6.49 02C6 24 BF

6.50 02C8 E6 AI

6.51 02C... FB

652 02C8 80 04

6.53 02CO B ... 03F6

654 0200 EE

6.55 0201 B9 OOOA

6.56 0204 49

657 0205 75 FD

658 0207 AO 0076 R

6.59 02DA 24 OF

&&0 02DC EE

&& 1 0200 E8 05E6 R

662 02EO 75 20

&&3 02E2 BA OIFI

6.64 02E5 EC

6.6.5 02E6 3C 0 I

66.6 02E8 75 25

667 02EA eo 66 FO EF

6.68 02EE 2A 02

669 02F'0 E8 03F 1 R

670 02F3 E8 0466 R

671 02F6 80 3E 0075 R 01

612 02FB 76 OC

6.73 02FO eo 4E FO 10

&74 0301 82 01

675 0303 E8 03F I R

676 0306 E8 0466 R

6.77 0309 C6 06 0014 R 00

&7e 030E C3

679 030F C6 06 0074 R 05

680 0314 C3

0315 6.81

•••

•• 3

•••

•• 5

•••

&87 0315

666 0315 AO 0074 R

689 0318 C6 06 0074 R 00

690 0310 C3

691 031E

MOV

1040V

MOV

SHR

MOV

1040V

SHL

AND

OR

OR

MOV

POP illCIo4D BLOCK+2,AL

(tCIo40-BLOCK+3,eH

AL,Ce

AL.6 illCIo4D BLOCK+4.AL

AL,OL

AL,4

DH,OFH

AL,DH

ALIBOH OR 201-1

ClCMO 8LOCK+5,AL

A X ­

GET CYL 1 NDER NUMBER

CYL INDER HIGH ORDER 2 BI TS

DR I VE NUt.48ER

HEAD NUt.4BER

ECC AND 512 BYTE SECTORS

ECCI S I ZE/DR I VE IHEAD

PUSH

MOV

XOR

SAL

MOV

CWP

JNB

POP

POP

PUSH

PUSH

1040V

SHR

MOV

ADO

"'X

ALI"'H

AH.AH

AX.I

SI .... X

"'X.MIL

BAD COMMAND POP

AX -

BX

CX

AX

CX, ax

GET I NTO LOW BYTE

ZERO HIGH BYTE

-2 FOR T"'BLE LOOKUP

PUT 1 NTO 5 I FOR BRANCH

TEST WITHIN RANGE

RESTORE AX

AND DATA ADDRESS

AD..JUST ES:8X

GET 3 HIGH ORDER NIBBLES OF BX

CX,4

AX ,ES

AX,CX

MOV

AND

ES.AX

8X,OOOFH ; ES:BX CHANGED TO ES:OOOX

POP

POP

... X ex

JMP WORD PTR CS:[SI + OFFSET MI ]

BAD COMMAND POP:

POP... X

POP

BAD COMMAND:

MOV

BX

ClDISK STATUSI,8AD eMD

AL,a "OV

RET

DISK_IO_CONT ENDP

,------

- -

-

- - - - - - -

-

---------- -- -----­

; RESET THE DISK SYSTEM IAH=OOHI

:----------­

I COMM...NO ERROR

DISK RESET

CLI

IN

ORO:

"MP

ANa

OUT

STI

MOV

MOV

OUT

MOV

DEC oNZ

MOV

ANa

OUT

CALL oNZ

"OV

IN eMP

"NZ

AND

SUB

CALL

C...LL eMP oBE

OR

"OV

CALL

CALL

MOV ORE:

RET

DRERR: t.40V

RET

DISK_RESET

PRoe

0-.

AL.OBFH

NEAR

INTBO 1 ,AL

"'L

1

04H

DXIHF REG PORT

DX,AL-

CX.I ex a

ORO

AL, ~CONTROL BYTE

AL,OFH -

DX.AL

NOT BUSY

DRERR

DX,HF PORT+I

AL,DX-

"'L.t

DRERR

CleMO BLOCK+5,OEFH

OLIDL

INIT DRV

HOISK REC ...L

ClHF NUt.4, I

DRE­

ClCMO BLOCK+5.0IaH

DL,I­

INIT DRV

HOI siC: RECAL

~DJSK:::::STATUSIIO oPD I SK_ST ATUS I • BAD_RESET

ENDP

:

;

--------------------

- - --

-

- - ---- - --

-----­

DISK STATUS ROUTINE (AH '" OIH) :

GET THE t.lASK REGI STER

I EN...BLE F I XED 0 I SK 1NTERRUPT

I START INTERRUPTS

RESET

DELAY COUNT

WAIT 4.8 MICRO-SEC

SET HEAD OPT I ON

TURN RESET OFF

T J t.4E OUT ON RESET

GET RESET STATUS

B...O RESET STATUS

SET TO DRIVE a

I SET M... X HEADS

; RECAL TO RESET SEEK SPEED

CHECK FOR DR I VE I

SET TO DRIVE 1

SET t.4AX HEADS

RECAL TO RESET SEEK SPEED

J GNDRE ANY SET UP ERRORS

CARD FAILED

RETURN ST...TUS

MOV

MOV

RET

RETURN_STATUS

PROC NEAR

AL._DISK STATUS I

ClDI SK_STATUS 1 ,0

ENDP

OBT... IN PREVIOUS STATUS

RESET ST",TUS

5-122

DISK

IBM Personal Computer MACRO Assembler

DISK - - - - - 06/10/85 FIXED DISK 8105

VersIon 2.00

692

693

694

695

696

691 031 E

698 031E C6 46 FE .20

699 0322 E9 04C6 R

100 0325

701

102

703

104

105

106 0325

101 0325 C6 46 FE 30

108 0329 E9 0505 R

109 032C

710

711

712

713

714

115 032C

116 032C C6 46 FE 40

111 0330 E8 054F R

118 0333 15 08

119 0335 E8 0585 R

120 0338 15 03

121 033A E8 0623 R

122 0330

123 0330 C3

124 033E

725

726

727

726

729

130 033E

131 033E C6 46 FE 50

132 0342 06

133 0343 53

134 0344 E8 0681 R

135 0341 26: 8A 41 OE

136 0348 66 46 F9

131 034E 58

138 034F 01

139 0350 E9 05QA R

140 0353

741

742

743

744

745

746

141 0353

148 0353

149 0353 1 E

150 0354 06

151 0355 53

752

153 0356 E8 0000 E

154 0359 C6 06 0014 R 00

155 035E 8A IE 0015 R

156 0362 80 E2 1F

151 0365 3A DA

158 0361 16 22

159 0369 E8 0681 R

160 036C 261 8A 41 02

161 0310 261 8A 4F OE

162 0314 F6 E9

163 0316 26: 138 OF

164 0319 49

165 031A F1 E9

166 031C 88 CA

161 031E 88 DO

166 0380 28 CO

169 0382 84 03

110 0384 58

111 0385 01

112 0386 IF

113 0381 F8

114 0388 CA 0002

115 0388

116 038B 28 CO

171 0380 88 C8

118 Q38F 88 DO

119 0391 E8 Fl

180 0393

:

;

;

-------------­

READ OASO TYPE IAH

READ DASo TYPE LABEL

REAO-D T PRoe

PUSH 05

PUSH

PUSH

ES

BX

NEAR

FAR

ASSUME OS:OATA

CALL DDS

MOY

"OY

AND

"'DISK STATUSI,O

8L

,~HF

NUM

DL,7FHeMP

J8E

CALL

BL.DL

ROT NOT PRESENT

GET-VEC-

"OV

"OY

IMUL

"OY

DEC

IMUL

AL,ES: [BX] (2]

CL.ES:[BX][I-4] eL

CX,ES:[BX1 ex ex

CX,OX "OY

"OY

SUB

DX,AX

AX, AX

AH,03H

RDT2:

"OY

POP

POP

POP eLe

RET

BX

E5

05

2

ROT NOT PRESENT:

-SUB AX,AX

READ_D_T

MOV

MOV

.JMP

CX,AX oX,AX

RDT2

ENDP

1-6

06-10-85

PAGE

;

--- ----- - -

---------

- ----- - - ------------­

DISK READ ROUTINE (AH

=

02H) :

DISK READ

MOV

J"P

DISK_READ

PROC NEAR

'l'CMD BLOCK+6, READ CMO

COMMAND I

ENDP

­

;

;

;

--

- - - - - - -

----------

-

- - -

--

-

-

------

- - -­

DISK WRITE ROUTINE jAH:: 03H) --

-

-

- - - - - - - -

----

- - - - - - - - - - - --- - - - - -

-

- - -­

DISK WRITE

MOV

J"P

01 SK_WR [TE

PROC NEAR

O>CMO BLOCK+6, WR I TE CMo

COMMANDO ­

E~DP

;

----- ----------

~

-

--- ------

--------­

;

;

01 SK VERIFY lAH :: 04HI

-------- ---- - ------------- ----------­

01 SK VERF

MOV

CALL

JNZ

CALL

JNZ

CALL

VERF EXIT:

RET

DISK_VERF

PROC NEAR

ClCMO BLOCK+6,VERIFY CMD

COMMAND ­

VERF EXIT

WAJ T­

VERF EXIT

CHECK_STATUS

ENDP

;

--

------ -

---------­

I

;-----

FORMATTING

-- ---

--------(AH

=

05H) :

-- - - - - -------- ------­

CONTROLLER STILL BUSY

I TIME OUT

FORMAT TRACK IAH

=

005HI FMT TRK PROC

MOV

PUSH

PUSH

CALL

"Oy

"Oy

POP

POP

J"P

FMT _ TRK ENDP

NEAR

I/>CMD BLOCK+6, FMTTRK CMD

ES ­

8X

GET VEe

AL,ES:(BX][14]

ClCMO BLOCK + I ,AL

BX ­

ES

CMD_oF

GET DISK PARAMETERS ADDRESS

GET SECTORS/TRACK

SET SECTOR COUNT I N COMMAND

GO EXECUTE THE COMMAND

ISH):

GET DRIVE PARAMETERS

SAVE REGISTERS

ESTABL I SH ADDRESS I NG

GET NUMBER OF DR I YES

GET OR I VE NUMBER

RETURN DR I VE NOT PRESENT

GET DISK PARAMETER ADDRESS

HEADS

• NUMBER OF SECTORS

MAX NUMBER OF CYL I NoERS

LEAVE ONE FOR DIAGNOSTICS

NUMBER OF SECTORS

HIGH ORDER HALF

LOW ORDER HALF

INDICATE FIXED DISK

RESTORE REGI STERS

CLEAR CARRY

DR I VE NOT PRESENT RETURN

ZERO BLOCK COUNT

DISK

5-123

1-'

06-10-85

IBM Persona! Computer MACRO Assembler

DISK - - - - 06/10/85 FIXED DISK 8105

Version 2.00

781

782

783

78'

78.

78. 0393

7S7 0393

7SS 0393 IE

7S. 0394 06

7.,

0395 53

7"

7.2 0396 Be ---- R

7'3 0]99 8E 08

7.'

039B F6 C2 01

7'5 7'.

039E 14 06

03AO C4 IE 0118 R

7.7

03A4 E8 04

7,S

03A6 C4 IE 0104 R

7 • •

S'O 03AA

S., 03AA E8 0000 E

S02 03AO 80 EA 80

S"

03BO 80 FA 02

SO. 03B3 73 2C

SO, 03B5 C6 06 0074 R 00

SO. 03BA 261 8B 07

S" 03BD 20 0002

S'S 03CO 8A E8

8,. ."

812

03C2 25 0300

03e5 DI E8

03C7 0 I ES

03C9 26: OA 41 OE

81. 03CD 8A C8

81. 03CF 26: 8A 77 02

815 0303 FE CE

SI. 0305 8A 16 0075 R

S" 0309 28 CO

81S 0308

81. 03DB 58

820 03DC 07

821 03DD IF

822 030E CA 0002

82. 03EI

S" 03EI C6 06 0074 R 01

S2. 03E6 B4 01

S2. 03E8 2A CO ...

03EA 2B 02

03EC 2B C9

03EE F9

03EF E8 EA

S3I 03FI

S"

,.4

•• 5

63b 03F 1

631 03F! C6 46 FE 91

636 03F5 E8 06B7 R

639 03F8 26: 8A 47 02

840 03FC FE C8

841 03FE eA 66 FO e42 040 1 eo E4 Fa e43 0404 OA EO e44 0406 ee 66 FO e45 0409 26: 8A 41 OE

846 0400 66 46 F9

847 0410 28 co

848 0412 88 46 FB

849 0415 E6 054F R

850 04181508

651 041A E8 05E6 R

852 0410 75 03

853 041 F E8 0623 R

854 0422

855 0422 C3

856 0423

857

858

85.

8 ••

8.'

862 0423

863 0423 C6 46 FE

864 0427 E9 04C6 R

22

865 042A

•••

8.7

8 ••

S"

8"

871 042A

812 042A C6 46 FE 32

813 042£ E9 0505 R

814 0431

87.

S7.

8"

878

87. eeo 0431

881 0431 C6 46 FE 70

882 0435 E8 054F R

663 0438 75 14

864 043A EIS 05B5 R

885 0430 75 OF

886 043F E8 0623 R

881 0442 80 3E 0074 R 40

888 0441 75 05

889 0449 C6 06 0074 R 00

890 044E

891 044E C3

8.2

893 044F

PAGE

;

----

;

;

--

-------------------------- -- ---­

GET PARAMETERS (AH

=

06H) :

---------------------------------------­

GET PARM N

GET):lARM-

PUSH

PUSH

PUSH

LABEL

PROC os

ES ex

ASSUME os: ABSO

NOV AX, ABSO

NOV

TEST

OS, AX

OL,I

GO:

NEAR

FAR

JZ

LES

G.

BX,3HFI TBL VEC

SHORT GT JNP

LES BX. iltHF _ TBL_VEC

ASSUME OS:DATA

GI:

DDS

OL,80H

OL,MAX_FILE

GS,

POP

POP

PDP

RET

G.,

MOV

MDV sue sue sue

STC

GET_PARM

JMP

SHR

SHR

OR

MOV

MOV

DEC

MOV

SUB

CALL

SUB

CNP

JAE

NOV

NOV

SUB

MOV

AND

G'

ODISK STATUS I ,0

AX,ES'i(BX]

AX,2

CH,AL

AX,0300H

AX, I

AX,I

AL,ESI(BX](14]

CL,AL

DH,ES:(8XlI2]

DH

DL.OHF_NUM

AX.AX ex

ES

OS

2 oDISK STATUSI,INIT FAIL

AH,INTT_FAIL

AL,AL

OX,OX

CX,CX

G'

ENOP

,

GET DR 1 VE PARAMETER S

SAVE REGISTERS

ESTABLISH ADDRESSING

CHECK FOR OR I VE I

EST ABL J SH SEGMENT

1 TEST WITHIN RANGE

1 MAX NUMBER OF CYL I NDERS

; AD,JUST FOR O-N

; HIGH TWO BITS OF CYLINDER

SECTORS

HEADS

O-N RANGE

DR I VE COUNT

RESTORE REGISTERS

OPERATION FAILED

SET ERROR FLAG

;

---- -

;

--

INIT ORV

- - - - -

-------

PROC

- - - -- - - - - - -

INITIALIZE DRIVE

NEAR

------tAH

--­

=

09HI :

1---------------------------------------­

MOV OCMD BLOCK-+6.SET PARM CMD

CALL

MOV

DEC

GET YEC

AL,ES: (BX] [2]

AL

1 ES:8x -> PARAMETER BLOCK

I GET NUMBER OF HEADS

; CONVERT TO a-INDEX

104011

AND

OR

104011

MOV

MOV

SUB

MOV

CALL

..INZ

CALL

,JNZ

CALL lNIT EXIT:

RET

INIT_ORV

AH,3CMO 8LOCK-+5

AH, OFOH-

AH, AL

CleMO BLOCK+5,AH

AL,ES:18X)[14]

3CMO BLOCK+I,AL

AX,AX

3CMO BLOCK+3, AL

COMMAND

INIT EX IT

NOT 'EiUSY

INIT EXIT

CI£CK STATUS

ENDP

;

;

;

-------

- - - - - ------------------- --- - -- - -­

READ LONG

-------- ------

---(AH

=

OAH) :

- -------- ------------­

; GET SOH REGISTER

I CHANGE HEAD NUMBER

; TO MAX HEAD

MAX SECTOR NUMBER

ZERO FLAGS

TELL CONTROLLER

CONTROLLER BUSY ERROR

WAIT FOR IT TO BE DONE

TIME OUT

PROC NEAR

OCMO 8LOCK-+6,READ CMD OR ECC MODE

COMMAND I -

ENDP

;

--

-- -

---

-

-

- - - - - - - - - - - - - - - - - - - - - -

---

- - -­

;

;

WRITE LONG (AH

=

OBH) -------------------------------- -------­

PROC NEAR

ClCMD BLOCK-+6.WRITE CMD OR ECC MODE

COMMANDO -

ENOP

;

;

--------- - - ---

SEEK

- -

-----------------­

(AH

=

OCH) :

1----- - - - - - - ---------- - ----- - - ----------­

DISK SEEK

MOV

CALL

JNZ

CALL

JNZ

CALL

CMP

JNE

NOV

OS EXIT:

RET

PRoe NEAR

~g~~A~60CK-+6.

SEEK_CMD

OS EXIT

WATT

OS EXIT

CHECK STATUS

~~I~~~iTATUSI,BAD-SEEK

OOTSK_STATUSI to

I CONTROLLER BUSY ERROR

TIME OUT ON SEEK

DISK_SEEK ENOP

5-124 DISK

89.

895

896

891

898

899 044F

900 044F E8 05E6

901 0452 15 II

902 0-454 8A 46 FD

R

903 0-451 8A 0lF6

90-4 0-45A EE

905 0-458 E8 0635 R

906 045E 15 05

901 0460 C6 06 0014 R 00

906 0465 C3

909 0466

910

9"

9>'

9>,

91.

915 0466

916 0466 C6 46 FE 10

911 046A E8 054F R

916 0460 15 19

919 046F E6 0595 R

920 0412 14 05

92 I 0-414 E8 05B5 R

922 0411 15 OF

923 0419

924 0479 E8 0623 R

925 041C 80 3E 0014 R 40

926 0481 15 05

921 0463 C6 06 0014 R 00

928 0488

929 0488 80 3E 0074 R 00

930 0480 C3

931 048E

93'

933

934

935

936

931 048E

938 048E FA

939 048F E4 AI

940 0-491 24 8F

941 0493 E8 00

942 0495 E6 A I

943 0491 E4 21

944 0499 24 F8

945 0-498 E8 00

946 0490 E6 21

947 049F F8

948 04AO E8 05E6 R

949 04A3 15 I A

950 04A5 8A 0 I Fl

951 0-4A8 80 90

952 04AA EE

953 04A8 E8 05E6 R

954 04AE 84 80

955 0480 15 OF

956 04B2 8A OIFI

957 0485 EC

958 04B6 A2 0080 R

959 0489 84 00

960 0-4B8 3C 0 I

961 04BO 14 02

962 048F 84 20

963 04C I

964 04CI 88 26 0074 R

965 04C5 C3

966 0-4C6

961

968

969

910

971

912

913 04C6

914 04C6 E8 0694 R

915 04C9 12 39

976 04C8 88 Fa

977 04CO E8 054F R

918 0400 15 32

979 0402

980 0402 E8 05B5 R

981 0405 75 20

9820401890100

983 040A 8A 0 I FO

984 0400 FA

985 04DE FC

986 040F F3/ 60

981 04E 1 FB

988 04E2 FlO. 46 FE 02

989 04E6 74 12

990 04E8 E8 0600 R

991 04EB 72 17

992 04ED 8A 01 Fa

993 04FO 89 0004

994 04F3 EC

995 04F4 26: 88 05

996 04F7 41

991 04F8 E2 F9

998 04FA E8 0623 R

999 04FD 15 05

1000 04FF FE 4E F9

100 I 0502 75 CE

1002 0504

1003 0504

1004 0504 C3

Ve,-sion 2.00 IBM F'e,-sonal Compute,MACRO Assemble,-

DISK - - - - 06/10/65 FIXED DISK 8105

1-10

06-10-85

PAGE

;--------------- ----------­

1

;

----- - -

TEST 0 J SK READY (AH

=

10H) :

-----

-

-------------

-------

------­

TST ROY F'ROC

CALL

JNZ

MOV

MOV

OUT

CALL

JNZ

MOV

TR EX: RET

TST_ROY ENOP

NEAR

NOT BUSY

TR EX

AL -;-_CMO 8LOCK+5

DX,HF PORT+6 ox ,AL­

CHECK ST

TR EX­

"'DTsK STATUS I ,0

WA I T FOR CONTROLLER

SELECT OR I VE

CHECK STATUS ONLY

WIPE OUT DATA CORRECTED ERROR

IAH

= llHl : 1

;

RECAL IBRA TE

--------------

---

-------­

HDISK RECAL

MOV

CALL

JNZ

CALL

JZ

CALL

RECAL x:

JNZ

CALL

CMP

JNE

MOV

RECAL EXIT:

CMF'

RET

HDISK_RECAL

PROC NEAR

OCMO BLOCK-+-6,RECAL CMD

COMMAND -

RECAL EX I T

WA [T -

RECAL X

WAIT -

RECAL EX I T

CHECK STATUS

001 SK-STATUS 1 ,BAD SEEK

RECAL-EX I T -

OOISK=STATUSI,O

@OISK_STATUSt,O

ENDP

;

;

----------------- - ----- ---------- - -----­

,CONTROLLER D[AGNOSTIC (AH

- - - - - - -

-

- -

-------

- -

-

-

-

- -

--

-

-

=

14H) ~

- - - - - - - - --­

START THE OPERATION

ERROR

WA I T FOR COMPLET I ON

TIME OUT ONE OK ?

WA I T FOR COMPLET I ON LONGER

T[ME OUT TWO TIMES [5 ERROR

SEEK NOT COMPLETE

IS OK

CTLR DIAGNOSTIC PROC

CLI

MOV

OUT

CALL

MOV

JNZ

MOV

IN

MOV

MOV

CMP

JE

CO ERR: MOV

CD-EX IT:

MOV

IN

ANa

JMP

OUT

IN

ANO

JMP

OUT

STI

CALL

JNZ

MOV

AL,INT801 ,.,

NEAR

INT80 I ,AL

AL, INTAO I

AL,OF8H

$·2 lNTAOl,AL

NOT BUSY

CD ERR

OX-;-HF PORT-+-7

AL,OIAG CMD

DX,AL ­

NOT BUSY

AH, TIME OUT

CD EXIT­

OX-;-HF PORT+ I

AL,DX­

~HF ERROR, AL

AH,D

AL,I

SHORT CD EX I T

AH, BAD_CNTLR

RET

CTLR_DIAGNOSTIC ENDP

;

-~~~~~N; ~

------------- -------- ---- -----­

01 SA8LE INTERRUPTS WH I LE CHANG I NG MASK

TURN ON SECOND INTERRUPT CH I P

LET I NTERRUPTS PASS THRU TO

SECOND CHIP

WA I T FOR CARD

BAD CARD

ST ART DIAGNOSE

WA I T FOR I T TO COMPLETE

TIME OUT ON DIAGNOSTIC

GET ERROR REG [ S TER

SAVE IT

CHECK FOR ALL OK

REPEATEDLY JNPUTS DATA TILL

NSECTOR RETURNS ZERO

~~~~~~~ I~----

----- ---- -- ---­

CALL

JC

MOV

CALL

-.lNZ

CHECK DMA

CMD ABORT

DI,BX

COMMAND

CMD_ABORT

CHECK b4K BOUNOARY ERROR

OUTF'UT COMMAND

CALL

JNZ

MOV

MOV eLi

CLO

REP

5TI

TEST

JZ

CALL

JC

MOV

MOV

CMD_12: IN

MOV

INC

LOOP

040_13: CALL

JNZ

DEC

JNZ

CMD ABORT;

TM_OUT:

RET

WAIT

TM OUT

CX-;-25bD

OX ,HF_PORT

INS'll

'l'CMD BLOCK -+- 6 ,ECC MODE

CMO T3 ­

WAIT DRQ

TM OOT

DX-;-HF PORT

CX,4 -

AL,OX

ES:8YTE PTR [DI],AL

01

CMD [2

CHECK STATUS

CMD ABORT

@CMD BLOCK + 1

SHORT CMO _I I

WAIT FOR DATA REQUEST INTERRUPT

T[ME OUT

SECTOR 5 I ZE I N WORDS

GET THE SECTOR

CHECK FOR NORMAL INPUT

WAIT FOR DATA REQUEST

GET ECC BYTES

, CD SLOW FOR BOARD

ERROR RETURNED

CHECK FOR MORE

DISK 5-125

IBM Personal Compute,. MACRO AS$emble,.

DISK - - - - 016/10/85 FIXED DISK 9105

Version 2".00

1005

1006

1001

1008

1009

10 I 0

1011 0505

10120505 E8 0694 R

1013 0508 12 FA

1014 0500A 88 F3

1015 0500C E8 054F R

1016 0500F 15 F3

1017 0511 E8 01600 R

1018051472

10190516 IE

EE

1020 0517 06

1021 0518 IF

10220519890100

1023 05lC 8A OIFO

1024 051F FA

1025 0520 FC

1026 0521 F31 6F

1027 0523 F8

1028 0524 IF

1029 0525 F6 46 FE 02

1030 0529 74 12

1031 0528 E8 0600 R

1032 052E 72 04

1033 0530 8A OIFO

1034 0533 89 0004

1035 0536 261 8A 04

1036 0539 EE

1037 053A 46

1038 0538 E2 F9

1039 OS30

1040 0530 E8 0595 R

1041 0540 75 C2

1042 0542 E8 0623 R

1043 0545 75 80

1044 0547 F6 06 008C R 08

1045 054C 75 C8

1046 054E C3

1047

1048

1049

1050

1051

1052

1053

1054

1055

1056 054F

1051 054F 53

1058 0550 89 0600

1059 0553

1060 0553 51

1061 0554 E8 044F R

1062 0551 59

1063 0558 14 08

1064 055A 80 3E 0074 R eo

1065 055F 14 48

101616 0561 E2 FO

1061 00563 E8 49 t 068 0565

1069 0565 58

1010 0566 51

1071 0567 C6 06 008E R 00

1012 056C FA

1073 0560 E4 A I

1074 056F 24 8F

1075 051. E8 00

1016 0513 E6 AI

1017 0515 E4 21

1018 0517 24 F8

1019 0519 E8 00

1080 0578 E6 21

1081 0510 F8

1082 057E 33 FF

1083 0580 8A OIFI l084 0583 F6 06 0076 R CO

1085 0588 14 11

1086 058A 8A 46 FE

1087 0580 24 FO

1088 058F 3C 20

1089 0591 72 08

1090 0593 3C 40

1091 0595 77 04

1092059180 4E FE 01

1093 0598

1094 0598 8A 43 F8

1095 059E EE

1096 059F 41

1097 05AO 42

1098 05AI 8' FA 0lF8

1099 05A5 75 F4

1100 05A1 5F

101 05A8 C3

102 05A9

103 05A9 C6 06 0014 R 20 t 04 05AE

105 05AE 5B

10& 05AF 80 3E 0074 R 00

107 0584 C3

108 05B5

1-] I

06I 0-85

PAGE ;

-~~~~;~~~------

- ----

-------------------­

I

;

REPEATEDLY OUTPUTS DATA TILL

NSECTOR RETURNS ZERO

~~~~~~~~ ~

-

---------- -

--- -

-

- -

---------

---­

CALL

.JC

CMO_OFI MOV

CALL

.JNZ

CALL

JC

CMO_O!: PUSH

PUSH

POP

MOV

MOV

CLI

CLo

REP

STi

PDP

TEST

JZ

CALL

JC

"OV

"OV

CMD_02: MOV

OUT

INC

LOOP

CHECK DMA

CMD A'EiORT

SI,BX

COMMAND

CMO ABORT

WAIT DRQ

TM OUT

OS­

ES

DS

CX.2560

OX, HF _PORT

OUTSW

OS

~~~D5~LOCK

+6

I

ECC _MODE

WA IT ORO

TM OOT

DX-;HF PORT

CX.4 -

AL.ES;SYTE PTR (SIJ

DX.AL

51

CMO_02

CHECK 64K BOUNDARY ERROR

; OUTPUT COMIoiAND

WAIT FOR DATA REQUEST

TOO LONG

1oi0VE ES TO OS

PUT THE DATA OUT TO THE CARD

I RESTORE OS

, CHECK FOR NORMAL OUTPUT

WA IT FOR DATA REQUEST

OUTPUT THE ECC BYTES

CALL

"NZ

CALL

JNZ

TEST

JNZ

RET

WAIT

TM OUT

CHECK STATUS

CMD ABORT

.HF-STATUS.ST DRQ

SHORT CMO_O! ­

WA I T FOR SECTOR COMPLETE INTERRUPT

ERROR RETURNED

CHECK FOR MORE

;

;

-

-----------

; COMMAND

- - - - - - -

------

-

--

- - - -

-

- - - -

---

- -

---

- - - - - - - -

--­

TH I S ROUT I NE OUTPUTS THE COIoiMANO BLOCK

I OUTPUT

I

I

;--

8L

- - - ---- -

=

STATUS

8H :: ERROR REG I STER ------------

-

------------------------- --- -­

COMMAND PROC

PUSH

"OV

COMMAND I :

PUSH

CALL

POP

"Z

CMP

JZ

LOOP

COMMAND2 :

""P

POP

JB

CMP

JA

OR

COMIoiAND3 :

MOV

OUT

INC

INC

CMP

JNZ

POP

RET

CMD TIMEOUTI

MOV

PUSH

NOV

CLI

IN

AND

"NP

OUT

IN

AND

J"P

OUT

5TI

XOR

MOV

TEST

"Z

MOV

AND

CMP

COMMAND4:

POP

CNP

RET

COMMAND ENOP

NEAR

BX

CX.DELAY_2

CX

TST ROY

CX ­

COMMAND2

.DISK STATUS I ,TIME OUT

CMD TIMEOUT

COMMAND I

SHORT COMMAN04

BX

01

.HF _I NT_FLAG , 0

AL,INTBOI

AL,OBFH

'>2

INTB01,AL

AL.INTAO I

AL.OF8H

'>2

INTAoOl.AL

01,01

DX,HF PORT+l

.CONTROL 8YTE, OCOH

COMMAND3­

AL.oCMD 8LOCK+6

AL,OFOH-

AL.20H

COMMAND3

AL.40H

COMMAND3

.CMD_8LOCK+6.NO_RETR I ES

AL. [OCMD_BLOCK+D I)

DX,AL

01

OX ox

.HF PORT+8

COMMAN03

01

(IIDISK_STATUS I.BAO_CNTLR

BX

(IIDISK_STATUSI,O

WA.I T FOR SEEK COMPLETE AND READY

SET I N I TI AL DELAY 8EFORE TEST

SAVE LOOP COUNT

CHECK DR I VE READY

DRIVE IS READY

TST_RDY TIMED OUT--GIVE UP

KEEP TRYING FOR A WHILE

[TS NOT GOING TO GET READY

RESET I NTERRUPT FLAG

INHI81T INTERRUPTS WH[LE CHANGING MASK

TURN ON SECOND INTERRUPT CHIP

LET INTERRUPTS PASS THRU TO

SECOND CHIP

I NDEX THE COMMAN) TA8LE

DISK ADDRESS

CHECK FOR RETRY SUPPRESS I ON

YES-GET OPERATION CODE

GET RID OF MODIFIERS

20H-40H I S READ. WR I TE, VER I FY

VALID OPERATION FOR RETRY SUPPRESS

GET THE COMMAND STR I NG 8YTE

GIVE IT TO CONTROLLER

NEXT BYTE I N COMMAND 8LOCK

NEXT 0 I SK ADAPTER REG I STER

A.LL DONE?

NO--GO DO NEXT ONE

ZERO FLAG I S SET

I SET COND I T I ON CODE FOR CALLER

5-126 DISK

IBM Personal Computer MACRO A •••mbler

D]SK - - - - - 06/10/85 FIXED DISK BIOS

V.rloion 2.00

1109

1110

1111

1112

1113 0585

11140585FB

1115 0586 2B C9

1116 0588 FB

1111 0599 B8 9000

1118058CCDI5

1 I 19 058E 72 OF

1120

1121 05eo 83 25

1122

1123

1124

1125 05C2 F6 06 006E R

1126 05Cl El F9

1121 05C9 15 08

1 128 05CB FE CB

1129 05CD 75 F3

1130 eo

1131 05CF C6 06 0014 R 80

I 132 0504 EB OA

1133 0506 C6 06 0074 R 00

1134 05DB Cb Ob 008E R 00

1135 05EO 80 3E 0014 R 00

I 136 05E5 C3

1131 05Eb

1138

1139

1140

1141

1142 05E6

1143 05E6 FB

1144 05E7 53

1145 05E8 93 25

1146 05EA 2B C9

1147 05EC SA 0lF7

1148 05EF EC

1149 05FO A8 80

1150 05F2 EO FB

115t 05F4 14 OB

I 152 05F6 FE CB

1153 05F8 75 F5

1154

'155 Q5FA C6 06 0014

I 156 05FF EB 05

11570601 C6 06 0074

1156 0606 58

1159 0601 80 3E 0014

1160 060C C3

1161 0600

1162

11b3

1164

1165

1166 0600

1161 060089 0100

1168 0610 BA OIFT

1169 0613 EC

11700614 A8 08

111106161509

11120618 E2 F9

R

R

R

80

00

00

1173 061A C6 06 0014

1174 061F F9

11750620 C3

11760621F8 t 177 0622 C3

11780623

1179

1180

1161

1182 0623

I 183 0623 E8 0635 R

1184 0626 75 07

11850628 A8 01

R 60

118b 062A 74 03

1181 Ob2C E8 0669 R

1188 062F

1189 062F 80 3E 0074 R 00

1190 0634 C3

119

T

0635

1192

1193

1194

1195 0635

11960635 BA 0lF7

1197 0638 EC

1 198 0639 A2 008C

I 199 063C B4 00

1200 063E A8 80

1201 Ob40 75 IA

1202 0642 B4 CC

R

1203 0644 AS 20

1204 0646 15 14

1205 0648 B4 AA

1206 064A A8 40

1207 064C 14 OE

1208 064E B4 40

1209 0650 AS 10

1210 0652 14 08

1211 ObS4 B4 II

1212 0656 A8 04

1213 0658 75 02

1214 065A B4 00

1215 Ob5C

1216 06SC 88 26 0074

1217066080 FC II

1218 0663 14 03

1219 0665 80 FC 00

1220 0668

1221 0668 C3

1222 Q6E;.9

R

1-12

06-10-65

PAGE r - - - - - - - - -- - ---- -- - - - - - - - - - - - - -- ------ - -­

; WAIT FOR INTERRUPT

~~~;----;~~~-

- --

~~~~

--------- -- - - --- -

---­

:

ST I

SUB

CLC

MOV

INT

JC

CX,CX

AX,9000H

ISH

WT2

MAKE SURE I NTERRUPTS ARE ON

SET INITIAL DELAY BEFORE TEST

DEVICE WAIT INTERRUPT

DEVICE TIMED OUT

SET DELA Y COUNT "OV BL,OELAY_'

WAIT LOOP

WTI : TEST

LOOPZ

JNZ

DEC

JNZ

4IIHF_I NT_FLAG, 80H

WTI

WT3

8L wn

I TEST FOR INTERRUPT

INTERRUPT--LETS GO

; KEEP TRYING FOR A WHILE

WT2:

WT3:

WT4:

WA]T

NBll

"OV

J"P

"OV

"OV

C"P

RET

ENDP

001 SK_STATUS 1, TIME_OUT

SHORT WT4

ODISK_STATUS 1 ,0

'HF _INT_FLAG,O oDISK_STATUS 1.0

;

- -

1

-----

- - - - - - -

--

-

- -

---------

- - -

-

- - - - --

WA I T FOR CONTROLLER NOT BUSY

1-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- -- - - - - - ­

NOT BUSY

STI

PROC NEAR

-­

PUSH

"OV

SU8

8X

BL,DELAY I

CX,CX -

"OV

IN

TEST AL,ST BUSY

LOOPNZ NBI

JZ

DEC

JNZ

DX,HF PORT+l

AL,DX-

NB2

8L

N81

REPORT T I ME OUT ERROR

I SET CONDITION CODE FOR CALLER

MAKE SURE I NTERRUPTS ARE ON

SET INITIAL DELAY BEFORE TEST

I CHECK STATUS

NOT BUSY--LETS GO

KEEP TRYING FOR A WH]LE

NB2:

NB3,

"OV

J"P

MOV

POP

NOT_BUSY

C"P

RET

;~b~~_~~~TUS

I ,TI ME_OUT

4IIDISK STATUSI,O

8X

OOISK_STATUSI,O

REPORT T I ME OUT ERROR

SET COND I T I ON CODE FOR CALLER

ENDP

1-- - - - - - - - - --- - - - - - - - - - - - - - - - --- - - - - - - - - ­

;

~~;;

WAIT FOR DATA REQUEST

-

~;~

-

- - ----;;~~-

-

~~~~

-

--

-------

- -­

:

-

WQ_I t

MOV

MOV

IN

CX,DELAY :3

OX,HF PORT+1

AL,DX-

~~iT ~~' ~~_DRQ

LOOP

MOV

WQ-I

ODTsK_STATUS I, T I ME_OUT wa_DK: CLC

RET

W"IT ORa

I---~----

STC

RET

ENDP

- ---- -------------- ------------­

;

;-

-

CHECK FIXED 01 SK STATUS --------- -

CHECK STATUS

- - -

---

-

PROC

---------

NEAR

--­

CALL

,JNZ

CHECK ST

CHECK-S I

TEST

JZ

CALL

CHECK_S 1:

AL, ST-ERROR

CHECK-S 1

CHECK-ER

CMP ,0

RET

CI£CK STATUS

;--

;

~~~~~

ENDP

-

-~------

-

- -

---------------­

CHECK FIXED DISK STATUS BYTE

-5;--------

;~~~

----

~E~~

------------­

:

GET STATUS

WAIT FOR DRQ

KEEP TRYING FOR A SHORT WHILE

ERROR

CI-ECK THE STATUS 8YTE

AN ERROR WAS FOUND

WERE THERE ANY OTHER ERRORS

NO ERROR REPORTED

ERROR REPORTED

SET STATUS FOR CALLER

-

MOV

TEST

JNZ

MOV

CKST EXIT:

MOV

C"P

JZ

C"P

CKST EXI:

RET

CHECK_ST

MOV

IN

MOV

MOv

DX,HF PORT+1

AL,DX­

.HF STATUS,AL

AH,O

~~~T ~~s~\:~~iY

MOV AH,WRITE FAULT

TEST

,JNZ

MOV

TEST

,JZ

AL,ST WRT FLT

CKST EXIT­

AH,NOT ROY

AL,ST READY

CKST EXIT

MOV AH, BAD SEEK

~~ST ~~S~TE;~~K-COMPL

AH,DATA CORRECTED

AL, ST CORRCTO

CKST EX I T

AH,O­

ODISK STATUSI,AH

AH,DATA CORRECTED

CKST ExT

AH,O­

ENDP

GET THE STATUS

IF STILL BUSY

REPORT OK

CHECK FOR WR I TE F AUL T

I CHECK FOR NOT READY

CHECK FOR SEEK NOT COMPLETE

CHECK FOR CORRECTED ECC

SET ERROR FLAG

KEEP GOING WITH DATA CORRECTED

DISK 5-127

IBM Pe .... ~onal Comput"r MACRO Assembl"r-

DISK ----06/10/85 FIXEO DISK 810S

Ver-alon 2.00 1-13

06-' 0-85

1223

1224

1225

1226

1221 0669

12280669 8A OIFI

1229 066C EC

1230 0660 A2 0080 R

1231 061053

1232 0611 89 0008

1233 0614 DO EO

1234 0616 12 02

1235 0618 E2 FA

1236 061A BB 068B R

1231 0610 03 09

1238 061F 2E: 8A 21

1239 0682 88 26 0014 R

1240 0686 58

124 I 0681 80 FC 00

1242 068A C3

1243 0688 EO

1244 06BC 02 40 01 B8

1245 0690 04 BB 10 OA

1246 0694

1241

1248

1249

1250

1251

1252

1253

1254

1255

1256

12510694

1258 0694 50

1259 0695 88 BOOO

1260 0698 F6 46 FE 02

126 I 069C 74 03

1262 069E B8 1F04

1263 06AI 3A 66 F9

1264 06A4 11 06

1265 06A6 12 01

1266 06A8 3A C3

1261 06AA 12 03

1268 06AC F8

1269 06AD 58

1210 06AE C3

1211 06AF F9

1212 06BO C6 06 0014 R 09

1213 06B5 58

1214 06B6 C3

1215 0681

1216

1211

1218

1219

1280 0681

1281 06B1 2B CO

1282 06B9 8E CO

1283

1284 068B F6 C2 01

1285 06BE 14 01

1286 06CO 26: C4 lEO I 18 R

1281 06C5 EB 05

1288 D6C7

1289 06C7 26: C4 IE 0104 R

1290 06CC

1291 06ce C3

1292 06CD

1293

1294

1295

1296

1291

1298

1299

1300 06CD

1301 06CD 50

1302 06CE IE

1303 06CF E8 0000 E

1304 0602 C6 06 DOSE R FF

1305 0601 BO 20

1306 0609 E6 AD

1301 0608 EB 00

1308 0600 E6 20

1309 06DF IF

1310 06EO FB

13 I I 06E 1 B8 9 I 00

1312 06E4 CD 15

1313 06E6 58

1314 06E1 CF

1315

1316 06E8

1311

1318 06E8 30 36 2F 31 30 2F

1319 3835

1320 06FO

1321

PAGE

-------------------- --- ---­

I CHECK FIXED DISK ERROR REG I STER .

---- - -- - -------------- - - - - - - ------- - --­

CHECK ER PROC NEAR

MOV

IN

OX,HF PORT+l

AL,DX­

MOV

PUSH

CK I:

CK2:

MOV

SHL

JC

LOOP

MOV

ADD

CKEX:

MOV

MOV

POP

CMP

RET

ERR TBL DB

DB

CHECK_ER

DB

IPHF ERROR, AL ax ­

CX ,B

AL,I

CK2

CK I

BX, OFFSET ERR T8l ax,cx -

AH.BYTE PTR CS: [BX]

IPOISK STATUSI,AH ax

AH,O

GET THE ERROR REG I STER

TEST ALL 8 SITS

MOVE NEXT ERROR 8 I T TO CARRY

FOUND THE ERROR

KEEP TRY I NG

COMPUTE ADDRESS OF

ERROR CODE

GET ERROR CODE

SAVE ERROR CODE

NO ERR

BAD ADOR MARK, BAD SEEK, BAD CMD, UNDEF ERR

RECORD NOT FND, UNDEF ERR, BAD ECC, BAD-SECTOR

E N D P - ­

;

---- - - ---- - - -

-

---------------- - - - - -------- ------­

; CHECK DMA

-CHECK ES: BX AND # SECTORS TO MAKE SURE THAT I T 'III I LL

FIT WITHOUT SEGMENT OVERFLOW.

-ES:BX HAS SEEN REVISED TO THE FORMAT SSSS:OQOX

-OK IF # SECTORS

-OK IF # SECTORS

< BOH 11FH IF lONG READ OR WRITE)

=

BOH 11FHI AND BX <= OOH i04H)

; -ERROR OTHERWI SE .

-----

-

-

------

- - -

-

- -- ------------- --- - - ----

-

-­

CHECK OMA PROC NEAR

PUSH AX SAVE REG I STERS

MOV

TEST

..IZ

AX ,BOOOH

.CMD BlOCK+6,ECC MODE

CKDI­

AH = MAX # SECTORS AL = MAX OFFSET

CKDI:

MOV

CMP

.JA

J8

CMP

J8

CKDOK: CLC

POP

RET

CKDERR: STC

MOV

POP

RET

CHECK_DMA

AX. 1F04H

AH,.CMD 8LOCK+ 1

CKDOK -

CKDERR

AL,Bl

CKDERR

ECC IS 4 MORE BYTES

NUMBER OF SECTORS

IT WILL FIT

TOO MANY

CHECK OFFSET ON MAX SECTORS

ERROR

CLEAR CARRY

AX

NORMAL RETURN

, I NO I CATE ERROR

IPOISK STATUS I ,DMA_BOUNDARY

AX

ENDP

;

---- ---- - - -- - - - - ------------

~~~-~~~- ;;~;----~~~~----

- -

- -

-

- - -----

---­

SET UP ES: BX-> DISK PARMS

-------

-­

SUB AX,AX

MOV ES,AX

ASSUME ES:ABSD

TEST DL,I

JZ GV D

3~~ ~~6=~F~v~~~T;EC

GET DISK PARAMETER ADDREsS

ES;SX -> DRIVE PARAMETERS

LES

GV EXIT:

RET

GET _ VEC ENOP

SX, ilIHF _ TBL_ VEC ES: BX -> DR I VE PARAMETERS

;--- HAROWARE INT 16H -I IRQ LEVEL 14 I

F I XED DISK I NTERRUPT ROUT I NE

HD INT PRoe

PUSH

PUSH

CALL

MDV

MDV

OUT oMP

OUT

PDP

STI

MDV

INT

PDP

IRET

-

ENDP

CODE ENDS

END

NEAR

AX

DS

DDS

PHF_I NT_FLAG, OFFH

AL,EOI

INT800 ,AL

1·2

INTAOO,AL

OS

AX,9100H

15H

AX

'06/10/85'

ALL DONE

NON-SPECIFIC END OF INTERRUPT

FOR CONTROLLER

.2

WAIT

FOR CONTROLLER "

RE-ENABlE INTERRUPTS

DEVICE POST

INTERRUPT

RETURN FROM INTERRUPT

RELEASE MARKER

5-128 DISK

I-I

06-10-65

IB'" Pe,..sonsl Computer "'ACRO A••• mbler

KYBo - - - - 06/10/65 KEYBOARD BIOS

VerSion 2.00

1

2

6

•

3 •

1

8

9

10

11

12

13

"

16

11

26

21

28

29

30

31

32

33

18

19

20

21

22

23

2.

25

3'

35

36

31

38

0000

..

.2

.3

.8

.9

50

51

52

53

5.

55

56

.

51 .,.........,

58

59

0000

0000 F8

000 I IE

0002 53

0003 E8 0000 E

0006 OA E4

0006 74 06

OOOA FE CC

OOOC 74 -45

OOOE FE CC

0010 1-467

00 12 58

00 13 IF

00 14 CF 60

61

62

63

6'

65

66

61

.8

69

10

11

12

13

"

16

00 15 88 IE OOIA R

00 19 36 IE OOIC R

0010 75 07

11

18

19

80

81

82

83

8.

85

8.

81

88

89

OOIF 86 9002

0022 CD 15

0024

002-4 FB

0025 90

0026 FA

0021 8e IE OOIA R

0026 38 IE OOIC R

002F 53

0030 9C

0031 £8 0587 R

003-4 SA IE 0097 R

0038 32 08

003A 80 E3 07

0030 1-4 04

003F E8 0549 R

0042 FA

0043 90

0044 5B

0045 74 DO

90

91

92

93

9.

00-47 88 07

00-49 E8 007F R

00-4C 89 IE OOIA R

95

96

91

98

99

0050 58

0051 IF

0052 CF

100 0053

101 0053 FA

102

103

0054 88 IE 001A R

0058 38 IE OOIC R

10. OOSC 88 07

105 005E 9C

106 005F 50

101 0060 E8 0587 R

108 0063 8A IE 0097 R

109 0067 32 08

110 0069 80 E3 07

006C 74 03 111

112

113

II.

006E E8 0549 R

0071 .8

PAGE 116,121

TITLE KYBD - - - - -

.LI ST

CODE

06/10/85

SEGMENT BYTE PU8L, C

KEYBOARD BIOS

PUBLIC KI6

PUBL I C KEYBOARD 10 I

PUBLIC K8 INT ,­ -

PUBLIC SNri_DATA

KEYBOARD 10 I

511­

PUSH

PUSH

CALL

OR

JZ

DEC

JZ

DEC

JZ

POP

POP

IRET

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

BEEP: NEAR

DD5;NEAR

5T ART I: NEAR

KIO:8YTE

KII :BYTE

KI2:BYTE

KI3:BYTE

KI4:BYTE

KI5:BYTE

K6:BYTE

K6L:ABS

K7zBYTE

K8 :BYTE

K9JBYTE

I NT 16 H -­ - - - - ----------------­ ------------­ - - - - --------­ - - ----­ --------­

KEYBOARD I /0

THESE ROUT I NES PROV I DE READ KEYBOARD SUPPORT

INPUT

(AH)= OOH READ THE NEXT ASCI I CHARACTER ENTERED FRO'" THE KEYBOARD,

RETURN THE RESULT IN (ALI, SCAN CODE IN (AH).

IAH)_ OIH SET THE ZERO FLAG TO INDICATE

A VA I LABLE

IF AN ASCII CHARACTER IS

TO BE READ FRO'" THE KEYBOARD 8UFFER.

{AH)

=

02H

(ZF)= I - ­ NO CODE AVAILABLE

(ZF)= 0 - ­ CODE 15 AVAILABLE IAX)= CHARACTER

IF (ZF)= A. THE NEXT CHARACTER IN THE BUFFER TO BE READ IS

IN (AX), AND THE ENTRY REMAINS IN THE BUFFER.

RETURN THE CURRENT SHIFT STATUS IN tAL) REGI STER

THE BIT SETTINGS FOR THIS CODE ARE INDICATED IN THE

THE EQUATES FOR 4tKB_FLAG

OUTPUT

AS NOTED ABOVE, ONLY lAX) AND FLAGS CHANGED

J ALL REGISTERS RETAINED

1 - ­ - - - - - - - ­ - - - - - - ­ - - - - -­ - - - ­ - -­ - - - - ­ - - - - - - - ­ - - - - -­ - ­ - - - --­ - - ­ - - ­ -:-----­ - - - - - - ­ - -­

ASSUME CSICODE,DS:DATA

PROC

OS ex

DDS

AH,AH

• Ie

AH

'2

AH

.3 ex

OS

FAR ; »> ENTRY PO I NT FOR ORG OE82EH

I NTERRUPTS BACK ON

, SAVE CURRENT OS

; SAVE 8X TEMPORARILY

I ESTABLISH POINTER TO DATA REGION

; CHECK FOR IAH)= QOH

; ASC I I READ

; CHECK-FOR (AHI = a

IH

;

;

ASC I I STATUS

CHECK-FOR (AH)

=

02H

; SHIFT STATUS

; RECOVER REGISTER

INVALID COMMAND EXIT

K 19:

KI;

KIe:

KIA;

READ THE KEY TO FIGURE OUT WHAT TO DO

MOV

CMP

JNE

MOV

INT

ST I

NOP

CLI

MDV

CMP

PUSH

PUSHF

CALL

MOV

XOR

AND

JZ

BX ,oBUFFER HEAO

6X.PBUFFER:TAIL

" C

AX,09002H

"H

BX.oBUFFER HEAD

BX ,OBUFFER:TA I L ex

MAKE LED

BL,.RB_FLAG_2

BL,AL

BL,KB_LEDS

.IA

SND_LEDI

GET PO I NTER TO HEAD OF BUFFER

TEST END OF BUFFER

IF ANYTHING IN BUFFER SKIP INTERRUPT

"'DVE IN WAIT CODE & TYPE

PERFORM OTHER FUNCT I ON

ASCI I READ

INTERRUPTS BACK ON DURING LOOP

ALLOW AN INTERRUPT TO OCCUR

INTERRUPTS BACK OFF

GET PO I NTER TO HEAD OF SUFFER

TEST END OF BUFFER

SAVE ADDRESS

SAVE FLAG

GO GET MODE INDICATOR DATA BYTE

GET PREVIOUS BITS

SEE IF ANY- DIFFERENT

I SOLATE INDICATOR BITS

I F NO CHANGE BYPASS UPDATE

CALL

CLI

POPF

POP

JZ ex

XI

GO TURN ON MODE INDICATORS

DI SABLE INTERRUPTS

RESTORE FLAGS

RESTORE ADDRESS

LOOP UNT I L SONETH I NG I N SUFFER

MOV

CALL

MOV

AX,IBX1

••

IIIBUFFER_HEAD,BX

POP

PDP

IRET ex

OS

ASCI I STATUS

• GET SCAN CODE AND A SC I I CODE

"'OVE POINTER TO NEXT POSITION

STORE VALUE IN VARIABLE

RECOVER REG I S TER

RECOVER SEGMEt-lT

RETURN TO CALLER

K2:

CLI

MOv

CMP

MDV

PUSHF

PUSH

CALL

MOV

XOR

AND

JZ

CALL

POP

INTERRUPT S OFF

GET HEAD POINTER

I F EQUAL (Z= I) THEN NDTH I NG THERE

SAVE FLAGS

SAVE CODE

GO GET "'ODE INDICATOR DATA BYTE

GET PREV 10US BITS

SEE I F ANY 0 I FFERENT

ISOLATE INDICATOR BITS

IF NO CHANGE BYPASS UPDATE

GO TURN ON MODE

RE S TORE COD~

INDICATORS

SK2:

BX,OBUFFER_HEAD

BX."BUFFER TAIL

AX. (SX1 -

AX

MAKE LEO

BL.4tKB_FLAG_2

8L,AL

SL ,KB_LEOS

5.2

SNO_LEOI

AX

KYBO

5-129

IBM Persona I Computer MACRO Asselllb ler

KY80 - - - - - 06/10(65 KEY80ARD 8105

Vera i on 2.00

146

141

148

149

150

151

! 52

153

! 54

155

156

151

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

198 I.'

200

201

202

203

204

205

20.

201

208

209

210

211

212

213

214

215

21.

217

218

219

220

221

222

22.

224

225

226

227

228

18'

185

186

181

188

18.

190

191

192

193

"4

"6

197

'.3

164

165

166

167

168

169

170

111

112

113

114

175

116

111

118

119

180

181

182

183

115001290

116 0013 F8

117007458

118

I 19

120

121

122

0015

0076

IF

CA 0002

123

124

125

126

127

128

0079

0079

001C

0070

007E

007F

AO

58

IF

CF

0017 R

12'

130

158

159

,.,

001F

001F

0080

0081

0085

0087

0088

0088

008C

008C

008C

0080

OOBE

008F

0090

0091

0092

0093

0094

0095

0096

0097

OOAF

0081

OOCF

43

43

38

75

88

C3

56

57

IE

06

FC

E8

Fe

55

50

53

51

52

IE 0082 R

04

IE 0080 R

0000 E

0091.

009C

009F

80

E8

FA

28 OOAO

00A2

00A2

001.4

00A6

E4

A8

EO

AD

0595 R

C9

64

02

FA

00A8 E4 60

OOAA

OOAC

001.0

84

F9

CD

4F

15

12 03

E9 02EE R

0084

0084

00B5

0081

FB

3C

74

FE

00

0089

00B8

3C

75

FA

12

OOBO

OOBE

00C3

FA

80

E9

DE 0097 RIO

02EE R

00C6

00C6

OOCl

OOCC

FA

80

E9

OE 0097 R 20

02EE R

OOCF

0000

0003

0007

0009

DOOe

50

E8

81.

32

80

14

0587 R

IE 0097 R

08

E3 07

03

OOOE

00E1

00E2

E8

58

8A

0536 R

EO

; - - - - ­

POPF

ST 1

POP

POP

RET

8X

OS

2

SHIFT STATUS

1-2

06-10-85

RESTORE FLAGS

I NTERRUPTS BACK ON

RECOVER REG I STER

RECOVER SEGMENT

THROW AWAY FLAGS

"OV

POP

POP

IRET

KEYBOARD_10_I

AL.OKB FLAG

8X -

05

ENDP

I NCREMENT A BUFFER PO [NTER

GET THE SHIFT STATUS FLAGS

RECOVER REG I STER

RECOVER REG I STERS

RETURN TO CALLER

K,

K5:

PROC

INC

INC

C"P

~NE

"OV

RET

ENDP

NEAR

8X

8X

BX, ClBUFFER_END

K5

BX,I!IIBUFFER_START

I MOVE TO NEXT WORD IN LIST

A T END OF BUFFER?

NO, CONT I NUE

YES, RESET TO BUFFER BEG I NN I NG

K.

; - - - HARDWARE INT 09 H -I IRQ LEVEL I I - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ­

KEYBOARD I NTERRUPT ROUT I NE

KB tNT I PROC

STI

PUSH

PUSH

PUSH

PUSH

PUSH

PUSH

PUSH

PUSH

PUSH

CLO

CALL

FAR

BP

A.X

BX

CX

OX

S I

0 I

OS

ES

DDS

; ENABLE INTERRUPTS

; FORWARD 0 I RECTION

; SET UP ADDRESSING

; - - - - WAIT FOR KEYBOARD DISABLE COMMAND TO BE ACCEPTED

"OV

CALL eLi

SU8

KB_INT_O:~

AL,DIS KBD

SHIP_IT

CX,CX

AL,STATUS PORT

TEST AL, I NPT BUF FULL

LOOPNZ KB_INT_OI o

I SABLE THE KEYBOARD COMMAND

EXECUTE 0 I SABLE o

I SABLE INTERRUPTS

SET MAXIMUM TIMEOUT

READ ADAPTER STATUS

CHECK INPUT 8UFFER FULL STATUS 81T

WA I T FOR COMMAND TO BE ACCEPTED

; - READ CHARACTER FROM KEYBOARD INTERFACE

IN AL,PORT_A

SYSTEM HOOK INT 15H -

; READ IN THE CHARACTER

FUNCTION 4FH ION HARDWARE INTERRUPT LEVEL 9Hf

AH,04FH "OV

STe

INT

~C

~"P

15H

"8

INT 02

K2.

SYSTEM iNTERCEPT KEY CODE FUNCTION

SET CY" I (IN CASE OF I RET I

CASSETTE CALL I AL)" KEY SCAN CODE

RETURNS CY" I FOR INVALID FUNCTJON

CONTINUE IF CARRY FLAG SET I (All =CODE)

EX I T IF SYSTEM HANOLED SCAN CODE

EXIT HANDLES HARDWARE EOI AND ENABLE

; - - - - CHECK FOR A RESENO COMMAND TO KEYBOARD

KB~INT 02:

ST I

C"P

~E

AL, KB RESEND

KB_INT_ 4

I ~ AL I

=

SCAN COOE

; ENABLE INTERRUPTS AGAIN

I I S THE INPUT A RESEND

I GO IF RESEND

1- - - - CHECK FOR RESPONSE TO A COMMAND TO KEYBOARD

; - - - - -

C"P AL,KB ACK

"NZ

KB_'NT_2

I I S THE I NPUT AN ACKNOWLEDGE

;GOIFNOT

A COMMAND TO THE KEYBOARD WAS ISSUED eLI

OR

""P

RESEND THE LAST BYTE o

I SABLE INTERRUPTS

, INDICATE ACK RECEIVED

; RETURN IF NOT lACK RETURNED FOR DATA)

KB INT 4:

CLI

OR

""P

KB_INT_2:

; - - - - -

UPOI

....KB FLAG 2, KB FE

K26-

D I SABLE INTERRUPTS

I NO I CA TE RESEND RECE I VEO

RETURN IF NOT (ACK RETURNED FOR DATA)

UPDATE MODE INDICATORS IF CHANGE IN STATE

PUSH

CALL

"OV

XOR

AND

"Z

CALL

POP

"OV

AX

MAKE LED

BL,PKB FLAG 2

BL,AL -

BL,KB LEOS

UPO -

SND LED

AX -

AH,AL

SAVE DATA IN

GO GET MODE I NO I CA TOR OA T

GET PREV 10US BITS

A BYTE

SEE I F ANY 0 I FFERENT

I SOL ATE I NO I CATOR 81 TS

IF NO CHANGE BYPASS UPDATE

GO TURN ON MODE

RESTORE DATA IN

I NO I CATOR S

SAVE SCAN CODE IN AH ALSO

TEST FOR OVERRUN SCAN CODE FRON KEYBOARD

5-130 KYBD

IBM Personal Computer MACRO Assembler

KYBD 06/10/85 KEYBOARD BIOS

Veroslon 2.00 1-3

06-10 85

229

230 00E4 3C FF

231 00E6 15 00

232 00E8 E9 04EB R

233

234

235

236

237

238

239

240

241

242

0009

0001

OODA

0008

0056

0006

243

244

245

246

241

248

249

250

251

0052

0053

004B

0040

0048

0050

0049

0051

0041

004F

252

253

254

255

256

0085

OOEO

257

258

259

260 OOEB 48 50 52 53 48 40

261 OOFI 49 51 41 4F

262 :: OOOA

263

264 00F5

265 00F5 24 1F

266 00F1 OE

267 00F8 01

268

269 OOF9 F6 06 0096 R CO

210 OOFE 14 33

271 010019 II

272 0102 80 FC A8

213 0105 15 05

274 0107 80 OE 0096 R 40

275 01 OC

276 0 I OC 80 26 0096 R 7F

271 0 I I I E8 48

278

279 0113

280 0113 80 26 0096 R BF

281 0 118 80 FC 41

282 0 118 75 41

283

284

285

286 0110 80 aE 0096 R 01

287 0122 F6 06 0096 R 20

288 0121 74 35

289 0129 80 OE 00 I 7 R 20

290 012E E8 0536 R

291 0131 EB 70

292 0133

293 0133 F6 06 0096 R 02

294 0138 14 5F

295

296

297

298 013A 80 26 0096 R FO

299 013F 3C 52

300 0141 14 05

301 0143 F6 C4 80

302 0146 75 5B

303 0148

304 0148 8F 00E8 R

305 0148 89 OOOA

306 014E F2/ AE

307 0150 15 54

308 0152 F6 06 00 I 8 R 08

309 0157 74 07

310 015980 26 0018 R F7

311 015E

312 015E E8 43

313 0160

314 0160 F6 06 0017 R 08

315 0165 74 OE

316 0167 F6 06 0017 R 04

317 016C 74 35

318 0 I 6E 3C 53

319 0170 15 31

320 0172 E9 0300 R

32 I

322 0175

323 0175 F6 06 0017 R 04

324 017A 75 15

325 017C 3C 52

326 0' 7E 15 OE

327

328

329

330 0180 8A C4

33 I 0182 84 80

332 0184 A8 80

333 0186 75 03

334 0188 E9 028F R

335 0188

336 0188 E9 0202 R

337 o 18E

338 o 18E E9 0453 R

339 0191

340 0191 80 F9 05

341 0194 77 00

342 0196 E9 040 I R

CMP oN' oMP

AL, KB OVER RUN

K 16

K62

-

: IS TH IS AN OVERRUN CHAR

; NO, TEST FOR SHIFT KEY

: BUFFER_FULL_BEEP

THIS CODE CONTAINS THE K8X SUPPORT FOR INT 09H

; EQUATES

F " -

-

M

FI2 M

EOU

EOU

EOU

FI2-B EOU

K I 02 M EOU

K I 02::::B EOU

2 "

2 "

" 8

" 6

86

" 4

INS M

DEL -M

EOU

EOU

LEFT M EOU

UP M

DN-M

EOU

EOU

PGUP M EOU

HOME

EOU

M EOU

END

-

EOU "

FUNCI! EOU

HC EOU

82

83

75

77

72

80

73

81

71

79

133

224

FUNC

FUNC "

MAKE

BREAK

FUNC 12 BREAK

KEY 102 MAKE

KEY 102 BREAK

INSERT KEY MAKE

DELETE KEY MAKE

CURSOR LEFT MAKE

CUR SOR RIGHT MAKE

CURSOR UP MAKE

CURSOR DOWN MAKE

PG UP MAKE

PG ON MAKE

HOME MAKE

END MAKE

FUNCT I ON KEY

TA8LE OF KEYPAD CURSOR &. CONTROL KEYS

DB

08

EQU

UP M,DN M,INS M,DEL M,LEFT M,RIGHT M

PGOP M,PGDN M-;-HOME M.ENO M-

S-K_TABI ­

­

K16:

AND

PUSH

PDP

Al,07FH

CS

ES

TEST

0' oN5

CMP oNE

DR

RST_RD_IO:

AND oMP tltKB FLAG 3, RD ID+LC AB

NOT-ID -

TST-ID 2

AH, To I

RST RD 10 ilK8-FLAG 3,LC A8

DR

TEST or

OR

CAll

JMP ilK8 FLAG 3, NOT RD

SHORT DO::::EXT ­

TST JD 2:

AND

CMP oNE

~K8 FLAG 3, NOT LC AB

AH,ID 2 -

DO_EXT

A READ [0 SAID THAT IT WAS KBX ilK8 FLAG 3, KBX

(lKB-FLAG-3, SET NUM LK

00 EXT

\ilKS FLAG,NUM STATE

-

SNO-LED

SHORT EX I T

REMOVE BREAK BI T

ESTABLISH ADDRESS OF TA8LES

ARE WE DOING A READ ID?

CONT I NUE I F NOT

I S THE RD 10 FLAG ON?

IS THIS THE 1ST 10 CHARACTER7

INDICATE 1ST 10 WAS OK

RESET THE READ 10 FLAG

RESET FLAG

IS THIS THE 2ND JD CHARACTER7

LEAVE IF NOT

INDICATE K8X WAS FOUND

SHOULD WE SET NUM LOCK?

EXIT IF NOT

FORCE NUM LOCK ON

GO SET THE NUM LOCK INDICATOR

TEST

J'

PKS FLAG 3, LC HC

NOT-LC He -

WAS THE LAST CHARACTER A HIDDEN CODE

.JUMP IF NOT

THE LAST CHARACTER WAS A HIDDEN CODE

AND

CMP

JE

TEST

IN'

MOV

MOV

REPNE

JNE

TEST

JZ

AND

IlIKB FLAG 3,NOT lC HC

AL, INS M

NOT I

AH,80H

EXIT

RESET LAST CHAR HIDDEN CODE FLAG

WAS IT THE INSERT KEY?

IS TH I S A BREAK CODE

IGNORE BREAK ON REST OF THESE KEYS

01 ,OFFSET K

CX,L TA81

SCASB

NOT CUR

~KB-FLAG I ,HOLD STATE

N HLD

\IIK8~FLAG_1 ,NOT HOLD_STATE

TEST FOR ONE OF THE KEYPAD CURSOR FUNC

SCAN FOR THE KEY

GO ON I F NOT FOUND

ARE WE IN HOLD STATE?

; EXIT HOLD STATE

SHORT EX IT IGNORE THIS KEY

TEST

JZ

TEST

JZ

CMP

JNE

JMP

NOT ALT:

TEST oN'

CMP oNE

(lKB FLAG,ALT SHIFT

NOT-AL T

ClK8-FLAG,CTL SHIFT

EXIT

AL,DEL M

EX IT -

K29

~KB FLAG,CTL SHIFT

CTL -ON

AL,INS M

N_INS

SPECIAL HANDL I NG FOR INSERT KEY

MDV

MDV

TEST oN' oMP

AL,AH

AH,INS_SHIFT

Al,80H

8 C

K22

B_C:

IS ALT DOWN?

HOW ABOUT CTRl7

I GNORE ALL IF ONLY AL T DOWN

WAS I T THE DELETE KEn

IGNORE J F NOT

GO DO THE CTl, AL T, DEL RESET

J S CTl DOWN7

SPECIAL CASE IF SO

IS THIS THE INSERT KEY?

RECOVER SCAN CODE

AH :: MASK FOR INSERT

WAS THIS A BREAK CODE?

GO HANDLE INSERT SH I FT

CTl_ON:

CMP oA oMP

CL,5

EXIT

K42

HANDLE BREAK

HANDLE &. IGNORE NUMLOCK

WA SIT INS, DEL, UP OR DOWN 7

IGNORE IF SO

GO HANDLE CTRL CASE

KYBD 5-131

IBM Peraonel Computer MACRO Assembler

KY8D - - - - 06110165 KEY80ARD 810S

Version 2.00

343

344 0199

345 0 I 99 80 FC EO

346 019C 75 06

347 019E 80 OE 0096 R 03

348 0lA3

349 0 I A3 E9 02EE R

350

351 0lA6

352 0lA6 80 FC 09

353 0lA9 75 04

354 OIAB BI 85

355 OIAD 1;:8 07

356 OlAF

357 OlAF 60 FC DA

358 0182 75 43

359 0184 81 66

360 0lB6

361 blB6 80 FC 07

362 0189 74 E8

363 018B 80 FC 08

364 OIBE 74 E3

365 0 I CO F6 06 00 18 R 08

366 0lC5 74 07

367 0lC7 80 26 0018 R F7

368 OICC E8 05

369 OICE

310 OICE 8A EI

371

372 0100 F6 06 0017 R 08

373 0105 74 05

374 0 I 07 80 C4 06

375 aiDA EB 16

376 OIDC

377 OIDC F6 06 0017 R 04

378 aiEl 74 05

379 0lE3 80 C4 04

380 0lE6 EB OA

381 0lE8

382 0lE8 F6 06 0017 R 03

383 OlEO 74 03

384 01 EF 80 C4 02

385 0lF2

386 0lF2 2A CO

387 0lF4 E9 04BA R

3 ••

3 ••

3.0

391 0lF7

392 0lF7 3C 54

393 0lF9 75 3D

3 ••

395 01 F8 F6 C4 80

396 OIFE 75 21

3.7

398 0200 F6 06 00 18 R 04

399 0205 75 17

.00

401 0207 80 OE 0018 R 04

402 020C 80 20 .0.

020E E6 20

405 0210 80 AE

406 0212 E8 0595 R

407 0215 B8 8500

408 OZ 18 FB

409 0219 CD 15

410 021B E9 02F8 R

411 021E

412 021E E9 02EE R

413 0221

414 0221 80 26 0018 R FB

4 I 5 0226 80 20

416 0228 E6 20

.17

4 I 8 022A 80 AE

419 022C E8 0595 R

420 022F 88 850 I

421 0232 FB

422 0233 CO 15

423 0235 E9 02F8 R

424 0238

425 0238 BF 0000 E

426 023B 89 0000 E

427 023E F21 AE

428 0240 8A Ci

429 0242 74 03

430 0244 E9 02DA R

431

.32

433 0247

434 0247 81 EF 0001 E

435 024B 2E; 8A A5 0000 E

436 0250 A8 80

437 0252 74 02 .3.

0254 EB 50

440

441 0256

442 0256 80 FC 10

443 0259 73 07

• •4

•• 5

•••

447 0258 08 26 0017 R

448 025F E9 02EE R

4 • •

.450

451

452 0262

453 0262 F6 06 00 I 7 R 04

454 0267 75 71

455

456 0269 3C 52

1-'

06-10-85

NOT LC HC:

CMP

JNE

OR

EXIT;

J"P

NOT CUR:

CMP

JNE

NOV

J"P e"p

JNE

NOV eMP

JE eMP

JE

TEST

JZ

AND

JMP

AH,HC

NOT CUR

OK8=FLAG_3,LC_HC+KBX

K2.

LAST CHARACTER WAS NOT A HIDDEN CODE

IS TH I S CHARACTER A HIDDEN CODE?

SET LAST CHAR WAS A HIDDEN CODE & KBX

THROW AWAY THIS CODE

AH,FII_M

T FI2

CL,FUNCII

SHORT DO_FN

AH,FI2 M

T SYS KEY

CL,FUNCII + 1

WASITFII?

HANDLE IF SO

SET BASE FUNCT I ON I I

WAS IT F12?

GO TEST FOR SYSTEM KEY

SET BASE FUNCT I ON 12

AH,FII B

EXIT -

AH,FI2 8

ExiT -

~K~[67AG_I,HOLD_STATE

OKB FLAG I ,NOT HOLD STATE

SHORT EXIT

I S TH I S A 8REAK CODE

IGNORE 8REAK CODES

I S TH I S A BREAK CODE

I GNORE BREAK CODES

ARE WE IN HOLD STATE?

; EXIT HOLD STATE

MOV

TEST

JZ

ADO

JMP

AH,CL

OKB FLAG,ALT SHIFT

T CTL

AH,6

SHORT SET_FN

ARE WE IN ALT

CNVT TO ALT FN 11-12

TEST

JZ

ADO

JMP

SET_FN:

TEST

,JZ

ADD

SUB

JMP

; - - - - TEST FOR SYSTEM KEY

T SYS KEY:

CMP

JNZ

AL, SYS KEY

K 16A -

TEST

JNZ

TEST

JNZ

OR

MOV

OUT

MOV

CALL

NOV

STI

INT

JMP

OKB FLAG, CTL SH I FT

T SHF

AH,4

SHORT SET_FN

ARE WE IN CTRL

CNVT TO CTRL FN 11-12

OKB FLAG,LEFT SHIFT+RIGHT SHIFT; IS EITHER SHIFT ON?

SET-FN

AH,2

AH,080H

K 16C

OKB FLAG I,SYS_SHIFT

K 168 -

-

:~~E6~AG_I,SYS_SHIFT

INTAOO,AL

AL,ENA KBD

SHIP IT

AX, 08500H

15H

K27A

I CNVT TO SHIFT FN 11-12

FORCE PSEUDO SCAN CODE

PUT I T I NTO BUFFER

IS IT THE SYSTEM KEY?

CONTINUE IF NOT

CHECK IF TH I S A BREAK CODE

00 NOT TOUCH SYSTEM INDICATOR IF TRUE

SEE IF IN SYSTEM KEY HELD DOWN

IF YES, DON'T PROCESS SYSTEM INDICATOR

INDICATE SYSTEM KEY DEPRESSED

END OF I NTERRUPT COMMAND

SEND COMMAND TO I NTERRUPT CONTROL PORT

I NTERRUPT-RETURN-NO-EO I

I NSURE KEYBOARD IS ENA8LED

EXECUTE ENABLE

FUNCTION VALUE FOR MAKE OF SYSTEM KEY

MAKE SURE I NTERRUPTS ENABLED

USER INTERRUPT

END PROCESS I NG

K 16B:

KI6C:

JMP

KI6A:

AND

MOV

OUT

MOV

CALL

MOV

STI

INT

J"P

MOV

MOV

REPNE

MOV

JE

JMP

K2. I GNORE SYSTEM KEY toK8 FLAG I ,NOT SYS_SHIFT· TURN OFF SH I FT KEY HELD DOWN

AL,EOI END OF I NTERRUPT COMMAND

INTAOO,AL SEND COMMAND TO I NTERRUPT CONTROL PORT

I NTERRUPT-RETURN-NO-EO I

AL,ENA K8D

SHIP IT

AX,08501H

INSURE KEY80ARD I S ENABLED

EXECUTE ENABLE

15H

K27A

FUNCTION VALUE FOR BREAK OF SYSTEM KEY

MAKE SURE INTERRUPTS ENA8LED

USER INTERRUPT

IGNORE SYSTEM KEY

01 ,OFFSET K6

CX, OFFSET K6L

SCASB

AL,AH

KI7

K25

SHIFT KEY TABLE

LENGTH

LOOK THROUGH THE TABLE FOR A MATCH

RECOVER SCAN CODE

,JUMP IF MATCH FOUND

IF NO MATCH, THEN SHIFT NOT FOUND

SH I FT KEY FOUND

SUB

MOV

TEST

JZ

JMP

01 ,OFFSET K6+1

AH,CS:K7[DI]

AL,80H

KI7C

SHORT K23

AD,JUST PTR TO SCAN CODE MATCH

GET MASK INTO AH

TEST FOR BREAK KEY

BREAK SH I FT FOUND

CONT INUE

; - - - - -

; - - - - -

K 18:

DE TERM I NE SET OR TOGGLE eMp

JAE

AH, SCROLL SH I FT

KI8 I F SCROLL SH I FT OR AB~VE, TOGGLE KEY

PLAIN SHIFT KEY, SET SHIFT ON

OR

JMP

OKS FLAG, AH

K26-

TURN ON SHIFT BIT

I NTERRUPT _RETURN

TOGGLED SHIFT KEY, TEST FOR 1ST MAKE OR NOT

TEST

JNZ eMP

CIIKB FLAG, CTL SH I FT

K25-

SHIFT-TOGGLE

CHECK CTL SHIFT STATE

,JUMP IF CTL STATE

I CHECK FOR I NSERT KEY

5-132

KYBD

ISM Personal Computer MACRO Assembler

KY8D - - - - 06/10/85 KEY80ARO 810S

VerSion 2.00

451 0268 15 22

458 0260 F6 06 00 I 7 R 08

459 0272 75 66

460

46 1 0274 F6 06 0017 R 20

462 0279 15 00

463 0278 F6 06 0017 R 03

464 0280 74 00

465

466 0282

461 0282 B8 5230

468 0285 E9 048A R

469 0288

470 0288 F6 06 00 I 7 R 03

47 1

472

0280 14 F3

473 028F

474 028F 84 26 0018 R

475 0293 14 02

476 0295 E8 51

477 0291

478 0291 08 26 0018 R

479 029B 30 26 0011 R

480

481

482

483 029F F6 C4 10

484 02A2 14 05

485

486 02A4 50

487 02A5 E8 0536 R

488 02A8 58

489 02A9

490 02A9 3C 52

491 02AB 15 41

492 02AD 88 5200

493 0280 E9 048A R

494

495

496

497 0283

498 0283 80 FC

499 0286 13 I A

500 0288 F6 04

50 1 028A 20 26 0011 R

502 028E 3C 88

503 02CO 15 2C

504

505

506

507 02C2 AO 0019 R

508 02C5 84 00

509 02C7 88 26 0019 R

5"

02C8 3C 00

02CO 14 IF 5"

5"

" 3

"4

" 5

"6

5 "

02CF E9 0493 R

0202

0202 F6 04

0204 20 26 0018 R

0208 E8 14

"8

520

521 020A

522 02DA 3C 80

523 020C 73 10

524 020E F6 06 0018 R 08

525 02E3 74 IE

526 02E5 3C 45

527 02E7 14 05

528 02E9 80 26 0018 R F1

529

530 02EE

531 02EE FA

532 02EF 80 20

533 02FI E6 20

534 02F3

535 02F3 BO AE

530 02F5 E8 0595 R

537 02F8

538 02F8 FA

539 02F9 01

540 02FA IF

541 02FB 5F

542 02FC 5E

543 02FO 5A

544 02FE 59

545 02FF 5B

546 0300 58

547 030 I 50

548 0302 CF

549

550

55 1

552

553

554

555

556

557

F6

75

0017 R 08

558

559 0300

560 0300 F6 06 0017 R 04

561 0312 14 39

562 0314 3C 45

563 0316 74 06

564 0318 3C 46

565 031 A 74 02

566 031C 3C 53

567 031E 15 20

568

569

570

1-5

06-10-85

JNZ

TEST

JNZ

K22 iIIKB FLAG, ALT SHIFT

K25

JUt.4P I F NOT I NSERT KEY

CHECK FOR AL TERNA TE SH I FT

JUt.4P IF ALTERNATE SHIFT

K20:

K21:

K22:

K22AO:

TEST

JNZ

TEST

JZ

MOV

JMP

TEST

JZ iIIKS FLAG, NUM STATE CHECK FOR BASE STATE

K21 ; JUt.4P IF NUM LOCK I S ON iIIKB FLAG, LEFT SH I FT + R r

GHT SH I FT

K22JUt.4P IF BASE STATE

AX, 5230H

K51

; NUt.4ER I C ZERO, NOT 1NSERT KEY

; PUT OUT AN ASC II ZERO

; BUFFER F[LL

; t.4IGHT BE NUMERIC iIIKS FLAG, LEFT SHJFT+ RIGHT SHIFT

K20JUt.4P NUMERIC, NOT INSERT

TEST

JZ

JMP

TEST

JZ

AH, iIIKS FLAG I

K22AO -

SHORT K26

SHIFT TOGGLE KEY HIT; PROCESS IT

I S KEY ALREADY DEPRESSED

GO IF NOT

JUMP I F KEY ALREADY DEPRESSED

OR

XOR ij)KB FLAG I, AH

\!IIKB-FLAG~

AH

INDICATE THAT THE KEY [S DEPRESSED

TOGGLE THE SHIFT STATE

TOGGLE LEO I F CAPS OR NUM KEY DEPRESSED

AH,CAPS SHIFT+NUt.4 SHIFT+SCROLL SHIFT; SHIFT TOGGLE?

K22B ; GO I

F

NOT

PUSH

CALL

POP

AX

SND LED

AX -

SAVE SCAN CODE AND SHIFT t.4ASK

GO TURN MODE INDICATORS ON

RESTORE SCAN CODE

K22B:

K23:

K24: eMP

JNE

MOV

JMP

AL,INS KEY

K26 -

AX, INS KEY·H

K51 -

BREAK SHIFT FOUND

TEST FOR 1 ST t.4AKE OF I NSERT KEY

JUMP IF NOT INSERT KEY

SET SCAN CODE INTO AH, 0 INTO AL

PUT I NTO OUTPUT BUFFER eMP

JAE

NOT

AND eMP

JNE

AH, SCROLL SH I FT

K24

AH

OK8 _FLAG,AH

AL, AL T KEY+80H

-

K26

BREAK -SH 1FT-FOUND

IS TH I S A TOGGLE KEY

YES, HANDLE BREAK TOGGLE

I NVERT MASK

TURN OFF SHIFT BIT

IS THIS ALTERNATE SHIFT RELEASE

1NTERRUPT _RETURN

AL TERNA TE SH I FT KEY RELEASED, GET THE V ALUE I NTO BUFFER

MOV

MOV

MOV eMP

JE

JMP

AL,'l>ALT_INPUT

AH,O iIIAL T INPUT, AH

AL,O

K26

K58

SCAN CODE OF 0

ZERO OUT THE FIELD

WAS THE I NPUT=O

I NTERRUPT RETURN

IT WASN' T-;SO PUT I N BUFFER

NOT

AND

JMP

AH

OK8 FLAG_I,AH

SHORT K26

TEST FOR HOLD STATE

BREAK-TOGGLE

I NVERT MASK

INDICATE NO LONGER DEPRESSED

INTERRUPT_RETURN

K25:

K26:

K21:

K21A:

K28;

K29: eLi

MDV

OUT

MOV

CALL eLi

POP

POP pop

POP

PDP

PDP

PDP

PDP

POP

IRET eMP

JAE

TEST

JZ eMP

JE

AND

E5 as

01

51

OX ex

8X

AX

8P

AL,80H

K26

-

K28

AL, NUM_KEY

K26

OKB_FLAG_I ,NOT HOLD_STATJ

NO-SHIFT-FOUND

TEST FOR BREAK KEY

NOTHING FOR BREAK CHARS FROM HERE ON

ARE WE IN HOLD STATE

BRANCH AROUND TEST I F NOT

CAN'T END HOLD ON NUM LOCK

: TURN OFF THE HOLD STATE BIT

AL,EDI

INTAOO ,AL

AL ,ENA K8D

SHIP IT

INTERRUPT-RETURN

TURN OFF INTERRUPTS

END OF INTERRUPT COt.4t.4AND

SEND COt.4MAND TO I NTERRUPT CONTROL PORT

I NTERRUPT-RETURN-NO-EO I

I NSURE KEYBOARD I S ENABLED

EXECUTE ENABLE

D I SABLE INTERRUPTS

RESTORE REGl STERS

RETURN, INTERRUPTS ON WITH FLAG CHANGE

NOT IN HOLD STATE

TEST

JNZ

JMP

OK8 FLAG, AL T SHIFT

K29

K38

TEST FOR CONTROL KEY AND RESET KEY SEQUENCE I CTL AL T DEL I

TEST

JZ eMP

JE eMP

JE eMP

JNE

OKB FLAG,CTL SHIFT

K31-

AL,NUM KEY

K26 -

AL, SCROLL KEY

K26 -

AL, DEL KEY

K31 -

-

TEST-RESET

ARE WE I N CONTROL SH I FT ALSO

NO RESET

CHECK FOR INVALID NUt.4 LOCK KEY

THROW AWAY IF IALT-CTLI +NUt.4 LOCK

CHECK FOR INVALID SCROLL LOCK KEY

THROW AWAY IF (ALT-CTLI+SCROLL LOCK

CTL-ALT STATE, TEST FOR DELETE-KEY

NO_RESET

CTL-AL T-DEL HAS BEEN FOUND

NO-HOLD-STATE

ARE WE IN ALTERNATE SHIFT

JUt.4P IF AL TERNA TE SH I FT

JUMP I F NOT AL TERNA TE

KYBD 5-133

IBM Pe,-sonal COlllpute,- MACRO Asselllble,-

KY8D - - - - 06/10/85 KEY80ARD 8IOS

Ve'-sion 2.00 1-6

06-10-85

571 0320 C7 06 0072 R 1234

572 0326 E9 0000 E

573

574

575 0329

576 0329 52 4F 50 51 484C

577 032F 40 47 48 49

578

579 033310 II 1213 14 15

580 0339 16 17 18 19 l E I F

581 033F 20 21 22 23 24 25

582 0345 26 2C 20 2E 2F 30

583 0348 31 32

58.

585

586

587 0340

588 0340 3C 39

589 034F 75 05

590 0351 80 20

591

592

0353 E9 048A R

593

59.

595 0356

596 0356 8F 0329 R

597 0359 89 OOOA

598 035C F2/ AE

599 035E 75 13

600 0360 81 EF 032A R

60 I 0364 AO 0019 R

602 0367 84 OA

603 0369 F6 E4

604 0368 03 C7

605 0360 A2 0019 R

606 0370 E9 02EE R

6.7

6.8

6.9

610 0373

611 0373 C6 06 0019 R 00

612 0378 89 OOIA

613 0378 F2/ AE

614 0370 75 05

615 037F 80 00

616 0381 E9 048A R

6"

618

619

620 0384

621 0384 3C 02

622 0386 72 OC

623 0388 3C OE

624 038A 73 08

625 038C 80 C4 76

626 038F 80 00

627 0391 E9 048A R

628

629

63.

631 0394

632 0394 3C 38

633 0396 73 03

634 0398

635 0398 E9 02EE R

636 0398

637 0398 3C 47

638 0390 73 F9

639 039F 88 0000 E

640 03A2 E9 04El R

6"

6.2

6'3

644 03A5

645 03A5 F6 06 0017 R 04

646 03AA 74 62

6.7

6.8

6.9

65.

651 03AC 3C 46

652 03AE 75 10

653 0380 88 1 E 0080 R

654 0384 89 IE 001A R

655 0388 89 IE 001 C R

656 038C C6 06 0071 R 80

657

658

659

660 03C I 80 AE

661 03C3 E8 0595 R

662 03C6 CD 18

663 03C8 28 CO

664 03CA E9 048A R

665

666 03CD

667 03CD 3C 45

668 03CF 75 26

669 0301 80 OE 0018 R 08

67.

6"

672

673 0306 80 AE

674 0308 E8 0595 R

675 0308 80 20

676 0300 E6 20

677

678

679

680 03DF 80 3E 0049 R 07

681 03E4 74 07

682 03E6 8A 0308

683 03E9 AO 0065 R

684 03EC EE

;----­

.3.

;----­

;----­

K31 :

;----­

K321

K33:

;----­

K34:

K35:

K36:

K37 :

K38:

;----­

;----­

K39:

PRESET FLAG, 1234H

START_T

AL T-INPUT-TA8LE

LA8EL BYTE

DB 82,79,80,81,75,76

DB 77,71,72,73

SUPER-SHI FT-TABLE

08 16,17,18,19,20,21

DB

08

08

DB

22,23,24,25,30,31

32,33,34,35,36,37

38,44,45,46,47,48

49,50

; SET FLAG FOR RESET FUNCT I ON

; ..JUMP TO POWER ON DIAGNOSTICS

10 NUMBERS ON KEYPAD

A-Z TYPEWR I TER CHARS

IN ALTERNATE SHIFT, RESET NOT FOUND

AL,57

.32

AL,' ,

.57

LOOK FOR KEY PAD ENTRY

; NO-RESET

; TEST FOR SPACE KEY

; NOT THERE

; SET SPACE CHAR

; 8UFFER _F I LL

OJ ,OFFSET K30

CX,IO

SCASB

.33

DJ,OFFSET K30+ I

AL,OAL T INPUT

AH,10 -

AH

AX,DI

OAL T INPUT ,AL

K26 -

AL T-KEY-PAD

AL T-JNPUT-TA8LE

LOOK FOR ENTRY US J NG KEYPAD

LOOK FOR MATCH

NO AL T KEYPAD

DJ-NOW-HAS ENTRY VALUE

GET THE CURRENT BYTE

MULTIPLY 8Y 10

ADD IN THE LATEST ENTRY

STORE J T AWAY

THROW AWAY THAT KEYSTROKE

LOOK FOR SUPERSH I FT ENTRY

~~:~6INPUT,O

.3.

AL,O

.57

NO-ALT-KEYPAD

ZERO ANY PREV I OUS ENTRY I NTO INPUT

{DI], {ES] ALREADY POINTING

LOOK FOR MATCH IN ALPHA8ET

NOT FOUND, FUNCT I ON KEY OR OTHER

; ASC I I CODE OF ZERO

; PUT I TIN THE BUFFER

LOOK FOR TOP ROW OF ALTERNATE SHIFT

AL,2

.35

AL,14

.35

AH,118

AL,O

.57

AL T-TOP-ROW

KEY WITH ' I ' ON IT

NOT ONE OF INTERESTING KEYS

IS IT IN THE REGION

AL T-FUNCT I ON

CONVERT PSEUDO SCAN CODE TO RANGE

INDICATE AS SUCH

BUFFER_F I LL

TRANSLATE ALTERNATE SH 1FT PSEUDO SCAN CODES

C"P

JAE

J"P

C"P

JAE

"OV

J"P

AL,59

.37

'26

AL,71

.36

BX,OFFSET KI3

'63

NOT I N AL TERNA TE SH I FT

AL T-FUNCT I ON

TEST FOR IN TABLE

AL T-CONT I NUE

CLOSE-RETURN

I GNORE THE KEY

AL T-CONT I NUE

IN KEYPAD REGION

IF SO, IGNORE

ALT SHIFT PSEUDO SCAN TABLE

TRANSLATE THAT

TEST

JZ

PKB_FLAG, CTL_SH I FT

•••

NOT-ALT-SHIFT

ARE WE I N CONTROL SH I FT

NOT-CTL-SHIFT

CONTROL SH I FT, TEST SPEC I AL CHARACTERS

TEST FOR 8REAK AND PAUSE KEYS

AL, SCROLL KEY

K39

BX,08UFFER START

Cl8UFFER HEAD, BX

08UFFER-TAIL,BX

OB I OS_BREAK ,80H

ENA8LE KEYBOARD

"OV

CALL

INT

SUB

J"P

AL,ENA K8D

SHIP IT

IBH -

AX,AX

'57

TEST FOR BREAK

NO-8REAK

RESET 8UFFER TO EMPTY

TURN ON PB lOS_BREAK BIT

ENA8LE KEY80ARD

EXECUTE ENABLE

BREAK I NTERRUPT VECTOR

PUT OUT DUMMY CHARACTER

BUFFER _F I LL

NO-8REAK

LOOK FOR PAUSE KEY

NO-PAUSE

TURN ON THE HOLD FLAG

AL,NUM KEY

K41 -

OKB_FLAG_I,HOLD_STATE

ENABLE KEYBOARD

AL,ENA KBD

SHIP IT

AL,EOI

INTAOO,AL

ENABLE KEYBOARD

EXECUTE ENABLE

END OF I NTERRUPT TO CONTROL PORT

ALLOW FURTHER KEYSTROKE INTERRUPTS

DURING PAUSE INTERVAL, TURN COLOR CRT BACK ON

PCRT MODE,7

K40 -

DX,03D8H

AL,e-CRT MODE SET

DX,AL -

IS TH I S THE MONOCHROME CARD

YES, NOTH I NG TO DO

PORT FOR COLOR CARD

GET THE VALUE OF THE CURRENT MODE

SET THE CRT MODE, SO THAT CRT IS ON

5-134 KYBD

19M Personal Computer MACRO Assembler

KYBO - - - - - 06/10/85 KEYBOARD BIOS

Vers,on 2.00

665

666

667

666 03EO

669 03EO F6 06 0016 R 08

690 03F2 15 F9

691

692 03F4 E9 02F8 R

693

694

695

696 03F1

691 03F1 3C 31

698 03F9 15 06

699 03FB 86 1200

100 03FE E9 048A R

701

702

703

104 040 I

105 040 I BB 0000 E

106 0404 3C 38

101 0406 12 lE

706

109 0408 88 0000 E

710 0408 E9 04E I R

711

712

713

714 040E

115 040E 3C 47

116 0410 73 33

717 0412 F6 06 0017 R 03

718 0417 7462

719

720

721

722 0419 3C OF

723 041 B 75 05

124 0410 B8 OFOO

725 0420 EB 68

726

727 0422

726 0422 3C 37

729 0424 75 10

730

73'

732

733 0426 BO AE

734 0428 E8 0595 R

735 0428 80 20

736 0420 E6 20

737 042F 55

738 0430 CD 05

739 0432 50

740 0433 E9 02F3 R

741

742 0436

743 0436 3C 38

744 0438 72 06

745 043A 88 0000 E

746 0430 E9 04E 1 R

747

748 0440

749 0440 BB 0000 E

750 0443 EB 41

751

752

753

754 0445

755 0445 F6 06 0017

756 044A 75 21

R 20

757 044C F6 06 0017 R 03

756 0451 75 21

759

760

761

762 0453

763

764 0453 3C 4A

765 0455 T4 OC

766 0451 3C 4E

767 0459 74 00

768 0458 2C 41

169 0450 BB 0000 E

77 0 0460 E9 04E3 R

771 0463

77 2 0463 B8 4A2D

773 0466 EB 22

774 0468

775 0468 88 4E2B

776 0468 EB 10

777

776

779

180 0460

181 0460 F6 06 0017 R 03

782 0412 15 OF

763

784 0474

785 0474 2C 46

786 0476 BB 0000 E

787 0419 EB 09

766

769

790

791 0478

792 0478 3C 38

793 0470 72 04

794 047F BO 00

795 0461 EB 01

796

797 0483

798 0483 BB 0000 E

1-7

06-10-85

K40;

SUSPEND SYSTEM OPERATION ILOOP) TILL NEXT KEY CLEARS HOLD STATE FLAG

TEST

.JNZ

ICtKB FLAG 1 ,HOLD STATE

K40-

PAUSE-LOOP

CHECK HOLD STATE FLAG

LOOP UNTIL FLAG TURNED OFF

...IMP K27A

;-----

TEST SPEC I AL CASE KEY 55

K41 : eMp

JNE

MOV

JMP

AL,SS

.42

AX,1I4·H

.57

; I NTERRUPT_RETURN_NO_EO I

SET UP TO TRANSLATE CONTROL SHIFT

NO-PAUSE

NOT-KEY-55

START/STOP PRINTING SWITCH

8UFFER_F I LL

K42 :

MOV eMP

JB

MOV

JMe

BX ,OFF SET K8

AL,59

.56

BX ,OFFSET K9

.63

NOT-KEY-55

SET UP TO TRANSLATE CTL

IS IT IN TABLE

YES, GO TRANSLATE CHAR

CTL -T ABLE-TRANSLATE

CTL TABLE SCAN

TRANSLATE_SCAN

NOT I N CONTROL SH I FT

K44: eMP

JAE

TEST

NOT-CTL-SHIFT

AL.71

K48

TEST FOR KEYPAD REGION

; HANDLE KEYPAD REG I ON

~~~JLAG'LEFT_SH1FT+R1GH~_~~~~TFOR

SHIFT STATE

JZ

;

-----

UPPER CASE. HANDLE SPEC I AL CASES eMP

JNE

MOV

JMP

AL,I5

.45

AX,15·H

SHORT K51

BACK TAB KEY

NOT-SACK-TAB

SET PSEUDO SCAN CODE

BUFFERflLL

K45t eMP

JNE

AL,55

.46

NOT-BACK-TAB

PR I NT SCREEN KEY

NOT-PR INT-SCREEN

;-----

ISSUE INTERRUPT TO INOICATE PRINT SCREEN FUNCTION

MOV

CALL

MOV

OUT

PUSH

1NT

POP

JMP

AL.ENA KBO

SHIP IT

AL,EOI

INTAOO,AL

BP

05H

BP

.27

I NSURE KEYBOARD I S ENA8LED

EXECUTE ENABLE

END OF CURRENT INTERRUPT

SO FURTHER TH I NGS CAN HAPPEN

SAVE PO INTER

ISSUE PRINT SCREEN INTERRUPT

RESTORE POINTER

GO BACK WITHOUT EO I OCCURR I NG

K46:

K47 : eMP

JB

MOV

JMP

MOV

JMe

AL,59

.47 eX,OFFSET K12

'63 ex ,OFFSET K I I

SHORT K56

NOT-PR I NT- SCREEN

FUNCT I ON KEY S

NOT-UPPER-FUNCT J ON

UPPER CASE PSEUDO SCAN CODES

TRANSLATE_SCAN

NOT-UPPER-FUNCT I ON

POINT TO UPPER CASE TABLE

OK. TRANSLA TE THE CHAR

KEYPAD KEYS, MUST TEST NUM LOCK FOR DETERMINATION

K48:

TEST

JNZ

TEST

JNZ

;

-----

BASE CASE FOR KEYPAD

K49:

K50,

K51: eMP

JE eMP

JE

SUB

MOV

JMP

MOV

JMP

AL,74

.50

AL,78

.51

AL.71

BX,OFFSET K15

'64

AX,14·H+'-'

SHORT K57

I BASE-CASE

SPECIAL CASE FOR A COUPLE OF KEYS

MINUS

CONVERT ORIGIN

BASE CASE TABLE

CONVERT TO PSEUDO SCAN

MOV

JMP

AX,78·H+'+'

SHORT K51

MINUS

BUFFER_F I LL

PLUS

BUFFER_FILL

MIGHT BE NUM LOCK, TEST SHIFT STATUS

K52:

TEST

JNZ

; ALMOST-NUM-STATE

~~~]·LAG,LEFT_SHIFT+RIGH~_~~:~~ED

TEMP OUT OF NUM STATE

K53:

SUB

MOV

JOP

AL,70 eX,OFFSET KI4

SHORT K56

PLA I N OLD LOWER CASE

REALLY NUM STATE

CONVERT ORTG I N

NUM STATE TABLE

TRANSLATE_CHAR

K54:

K55: eMP

JB

MOV

JMP

MOV

AL,S9

.55

AL.O

SHORT K57

BX,OFFSET KIO

NOT-SH I FT

TEST FOR FUNCTION KEYS

NOT-LOWER-FUNCT I ON

SCAN CODE IN AH ALREADY

BUFFER_FILL

NOT-LOWER-FUNCT ION

LC TABLE

KYBD 5-135

IBM Personal Computer MACRO Assembler

KYBO - - - - 06/10185 KEYBOARD BIOS

Ver5,on 2.00

'"

8 "

802 0486

803 0486 FE CB

804 0488 2E

=

01

80S

806

801

808 048A

809 048A 3C FF

810 048C 14 IF

81 I 04BE 80 FC FF

812 0491 14 IA

813

81'

815

8 I 6 0493

8110493F6060017R40

818 0498 14 20

8"

820

821

822 049A F6 06 0011 R 03

823 049F 14 OF

82.

825

826

827 04AI 3C 41

828 04A3 12 15

829 04A5 3C 5A

830 04A1 1711

B31 04A9 04 20

832 04AB EB 00

833

834 04AD

835 04AD E9 02EE R

836

831

838

B39 04BO

B40 04BO 61

841 04B2 12 06

842 04B4 3C 1 A

B43 04B6 11 02

B44 04BB 2C 20

8.5

846 04BA

847 04BA BB IE OOIC R

848 04BE BB F3

B49 04CO E8 001F R

B50 04C33B IE OOIA R

B51 04C1 14 22

852 04C9 89 04

B53 04CB 69 IE OOIC R

854 04CF FA

855 0400 BO 20

856 0402 E6 20

851 0404 BO AE

858 0406 EB 0595 R

859 0409 86 9102

860 04DC CD 15

861 04DE E9 02F8 R

862

863

86.

865

666 04EI

861 04EI 2C 3B

666 04E3

869 04E3 2E: 01

870 04E5 8A EO

871 04E1 BO 00

872 04E9 EB 9F

813

814 04EB

815

816 04EB

811 04EB BO 20

818 04EO E6 20

819 04EF B9 02A6

880 04F2 B3 04

881 04F4 E8 0000 E

882 04F1 E9 02F3 R

883

88.

885

886

881

888

88'

890

891

892

893 04FA

894 04FA 50

895 04FB 53

896 04FC 51

891 04FD 8A F8

898 04FF B3 03

899 0501

900 050 I FA

90 I 0502 80 26 0091 R CF

902

903

90.

')05 0501 28 C9

906 0509

901 0509 E4 64

908 0508 A8 02

909 0500 EO FA

910

911 050F 8A C1

912 0511 E6 60

;

-----

TRANSLATE THE CHARACTER

K5b:

DEC

XLAT

AL

CS:K I I

;-----

PUT CHARACTER I NTO BUFFER

K571 eMP eE

CMP eE

AL,-1

K59

AH,-I

K59

HANDLE THE CAPS LOCK PROBLEM

K58 :

TRANSLATE-CHAR

CONVERT ORIGIN

CONVERT THE SCAN CODE TO ASC I I

BUFFER-F I LL

Is THIS AN IGNORE CHAR

YES. DO NOTH I NG WITH IT

LOOK FOR -I PSEUDO SCAN

NEAR_l NTERRUPT _RETURN

TEST ez a.KB FLAG,CAPS STATE

K6'-

IN CAPS LOCK STATE

TEST

.JZ

BUFFER-F I LL -NOTES T

ARE WE IN CAPS LOCK STATE

SK I P IF NOT

.KB FLAG,LEFT SHIFT+RIGHT SHIFT; TEST FOR SHIFT STATE

K60;-IF NOT SHIFT, CONVERT LOWER TO UPPER

K59:

; - - - - -

K60:

Kbl,

CONVERT ANY UPPER CASE TO LOWER CASE

CMP eB

CMP

JA

ADD

JMP

AL, 'A'

K61

AL, 'Z'

K61

AL,' 01''A'

SHORT K61

FIND OUT IF ALPHABET 1 C

-

NOT CAPS STATE

CONVERT TO LOwER CASE

NOT_CAPS STATE

NEAR-I NTERRUPT-RETURN eMP K26

CONVERT ANY LOWER CASE TO UPPER CASE

CMP

JB

CMP

JA

SUB

AL,' a'

K61

AL,'

2 '

K61

AL,' a' 'A'

LOWER-TO-UPPER

FIND OUT IF ALPHABETIC

NOT_CAPS_STATE

NOT CAPS STATE

CONVERT TO UPPER CASE

~OV

MOV

CALL

CMP eE

MOV

MOV

CL I

MOV

OUT

MOV

CALL

MOV

I NT eMP

BX ••BUFFER_ TAl L

SI,BX

K'

BX, .BUFFER_HEAD

K62

(si) ,AX

.BUFFER _TAIL,8X

AL,EOI

INTAOO,AL

AL,ENA_KBD

SHIP IT

AX,09102H

ISH

K27A

NOT-CAPS-STATE

GET THE END PO I NTER TO THE 8UFFER

SAVE THE VALUE

ADVANCE THE TAl L

HAS THE BUFFER WRAPPED AROUND

BUFFER FULL BEEP

STORE THE VALUE

MOVE THE PO I NTER UP

TURN OFF INTERRUPTS

END OF I NTERRUPT COMMAND

SEND COMMAND TO INTERRUPT CONTROL PORT

I NSURE KEYBOARD I S ENABLED

EXECUTE ENABLE

MOVE I N POST CODE & TYPE

PERFORM OTHER FUNCT! ON

I NTERRUPT ~RETURN

Kb4:

TRANSLATE SCAN FOR PSEUDO SCAN CODES

SUB

XLAT

MOV

MOV

JMP

CS:K9

AH,AL

AL,O

K51

TRANSLATE-SCAN

CONVERT OR I GIN TO FUNCT I ON KEYS

TRANSLATE- SCAN-ORGD

CTL TABLE SCAN

PUT VALUE INTO AH

ZERO ASC J I CODE

PUT I T I NTO THE BUFFER

KB_INT_I ENDP

K62:

MOV

OUT

~OV

MOV

CALL

JMP

AL,EOI

INTAOO ,AL

CX,678

BL,4

BEEP

K21

ENABLE I NTERRUPT CONTROLLER CH I P

DIVISOR FOR 1760 HZ

SHORT BEEP COUNT 11/16 + 1/64 DELAY)

GO TO COMMON BEEP HANDLER

EXIT

1- - - - - - - - - - - - - ­

SND_DATA

THIS ROUTINES HANDLES TRANSMISSION OF COMMAND AND DATA BYTES

TO THE KEYBOARD AND RECE I PT OF ACKNOWLEDGEMENTS.

HANDLES ANY RETR I ES IF REQU I RED

I T ALSO

SND DATA PROC

~

SDO:

PUSH

PUSH

PUSH

NEAR

AX

BX

CX

BH,AL

BL,3

SAVE REGISTERS

SAVE TRANSMITTED BYTE FOR RETRIES

LOAD RETRY COUNT

CLI

AND

; DISABLE INTERRUPTS

<PKB_FLAG_2,NOT lKB_FE+KB_FAI : CLEAR ACK AND RESEND FLAGS

WA I T FOR ANY PEND I NG COMMAND TO BE ACCEPTED

501 :

SUB cX,ex

IN AL,STATUS PORT

TEST AL, I NPT BUF FULL

LOOPNZ SO I -

MAXIMUM WAIT COUNT

READ KEYBOARD PROCESSOR STATUS PORT

CHECK FOR ANY PEND I NG COMMAND

WA I T FOR COMMAND TO BE ACCEPTED

MOV

OUT

AL,BH

PORT_A,AL

REESTABLISH BYTE TO TRANSMIT

SEND BYTE

5-136

KYBD

IBM P.rsonsl Computer MACRO As ••",bl.r

KYBO - - - - 06/10/65 KEYBOARD BIOS

VerSlQn 2.00

913 0513 FB

914 051489 IAOO

915 0511

916 0511 F6 06 0091R 30

911 051C 15 00

918

919 051E E2 F7

920 0520

921 0520 FE C8

922 0522 75 DO

923

924 0524 80 OE 0091 R 80

925 0529 E8 07

926 0528

927 052B F6 06 0091 RIO

928 0530 74 EE

929 0532

930 0532 59

931 0533 58

932 0534 505

933 0535 C3

934 0536

935

93b

931

938

939

94.

941

942

943 0536

944 0536 FA

945 0537 F6 06 0091 R 40

946 053C 75 47

941

948 053E 80 OE 0097 R 40

949 0543 80 20

950 0545 E6 20

951

952

0547 EB 00

953 0549

954 0549 FA

955 054A F6 06 0097 R 40

956 054F 75 34

951

956 0551 80 OE 0097 R 40

959 0556

960 0556 BO ED

961 0558 E8 04FA R

962 0558 FA

963 055C E8 0505 7 R

964 055F 80 26 0097 R FB

965 0564 08 06 0097 R

966 0568 F6 06 0097 R 050

967 0560 75 OB

9b8

969 056F EB 04FA R

970 0572 FA

971 0573 F6 06 0097 R 60

972 0576 74 06

973 057A

974 057A BO F4

975 057C EB 04FA R

976 057F FA

977 0580

978 0580 80 26 0097 R 3F

979 0585

960 0585 F.B

981 0586 C3

982 0587

983

984

985

'Bb

981

988

989

" 0

991 0587

992 0567

993 050505 AO 0017 R

994 05eB 24 70

995 0~8D BI 04

996 058F 02 CO

997 0591 24 07

996 0593 59

999 0594 C3

1000 0595

1001

1002

,003

1004

1005

1006

1007

10005 0595

1009 0595 50 to I 0

101 1

10120596 FA

10130597 28 C9

1014 0599

1015 0599 E4 64

1016 059B A8 02

10170590 EO FA

1018

1019 059F 58

1020 05AO E6 64

1021 05A2 FB

1022 05A3 C3

1023 05A4

1024 05A4 t 025

STI

NOV

SD3:

TEST

JNZ

LOOP

SD5:

DEC

"NZ

OR

""P

507:

TEST

"Z

5091

POP

POP

PDP

RET

SND_OATA ENDP

1-'

06-10-85

CX,OIAOOH

OKB_FLAG_2, KB_FE+KB_F A

501

503

BL

SO.

OKS FLAG 20KB ERR

SHORT SD9 -

OKB_FLAG_2 oKB_FA

505 ex

BX

AX

ENABLE INTERRUPTS

LOAD COUNT FOR 10 ms+

SEE IF EITHER BIT SET

IF SET 0 SOMETHING RECEIVED GO PROCESS

OTHERWISE WAIT

DECREMENT RETRY COUNT

RETRY TRANSMISSION

TURN ON TRANSMIT ERROR FLAG

RETRIES EXHAUSTED FORGET TRANSMISSION

SEE IF THI S I S AN ACKNOWLEDGE

I F NOT 0 GO RESEND

RESTORE REG I STERS

,

RETURN, GOOD TRANSMISSION

,

;

SNO LED

SNO=:LEOI

THIS ROUTINES TURNS ON THE MODE INDICATORS.

~~~

-

~~~-;;~

-

-- -

~~;~

- - - - - - -

----------------

-

-

- - - - - -

-

- -- - - -

-------------­

CLI

TEST

.JNZ

OKB FLAG 2,KB PR LED

SL9-

TURN OFF INTERRUPTS

CHECK FOR t.lOOE INDICATOR ,UPDATE

DON'T UPDATE AGAIN IF UPDATE UNDERWAY

OR

NOV

OUT

JNP

SND LEDI:

CLl

TEST

JNZ

OKB FLAG 2, KB PR LED

AL,EOI - -

INTAOO,AL

SHORT SL3

OKB FLAG 2,KB PR LED

SL9- ­

TURN ON UPDATE I N PROCESS

END OF INTERRUPT COt.lMAND

SEND COMMAND TO I NTERRUPT CONTROL PORT

GO SEND MODE INDICATOR COt.lt.lAND

TURN OFF INTERRUPTS

CHECK FOR MODE INDICATOR UPDATE

DON'T UPDATE AGAIN IF UPDATE UNDERWAY

TURN ON UPDATE I N PROCESS

SL3:

OR

MOV

CALL eLI

CALL

AND

OR

TEST

JNZ

~KB_FLAG_2 ,KB_PR_LED

AL,LED Ct.lD

SND_DATA t.lAKE LED

(IIKB FLAG 2

I

NOT KB LEOS

OKB-FLAG-2, AL -

;~~=:FLAG=2,KB_ERR

LED CMD BYTE

SEND DATA TO KEYBOARD

GO FORt.I INDICATOR DATA B)'TE

CLEAR MODE INQICATOR BITS

SAVE INDICATORS STATES FOR NEXT TIt.lE

TRANSt.l1 T ERROR DETECTED

IF SO. BYPASS SECOND BYTE TRANSMISSION

CALL eLI

TEST

JZ

SL5:

NOV

CALL eLI

SL71

AND

SL9:

511

RET

SND_LED ENDP

SND_DATA

(IIKB FLAG 2,KB ERR

SL7-

AL. KB ENABLE

SND_DATA

SEND DATA TO KEYBOARD

TURN OFF INTERRUPTS

TRANSMIT ERROR DETECTED

I F NOT, DON 0 T SEND AN ENA8LE COMMAND

GET KEYBOARD CSA ENABLE COt.lt.lAND

SEND DATA TO KEYBOARD

TURN OFr INTERRUPTS

OKB FLAG 2 oNOT(KB PR LEO+KB ERR) ; TURN OFF MODE INDICATOR

; UPDATE AND TRANSMIT ERROR FLAG

; ENABLE INTERRUPTS

I RETURN TO CALLER

;

-------

-----

; MAKE_LED

- - - - - - - - - - - - - -

-------------------

- -

---

- - - - - -

-

-

-------------­

THIS ROUTINES FORMS THE DATA BYTE NECESSARY TO TURN ON/OFF

THE MODE INDICATORS

~~;~-~~D-;~~~---~~;~-----------------------------------------------------

PUSH t.lDV

~~~ ex ;

SAVE CX

AL.(tKB FLAG ; GET CAPS & NUM LOCK INDICATORS

~t:~APS_STATE+NUt.I-STATE+iC~~~~'fS~~~~T;

ISOLATE INDICATORS

ROL

AND

ALoCL

AL,07H

; SHIFT BITS OVER TO TURN ON INDICATORS

; MAKE SURE ONLY t.lOOE BITS ON

;

POP CX

RET ; RETURN TO CALLER

;

MAKE_LEO ENOP

;

-

---- -

------

- -

--

- - - - -

--

-- -

---------

-

-----

- - - - - -

-

- - - - - - - -

-------------

,

SHIP_IT

-­

THIS ROUTINES HANDLES TRANSMISSION OF COMMAND AND DATA BYTES

TO THE KEYBOARD CONTROLLER.

;~ ~;

-

~ ~

-

;~~~

----

~~;;--

---

- - - -

- -

- -

-

- -

-

- - -

-

----- -- - - - - - - -- - - - - - - - - - - - - - -­

PUSH AX

WAIT FOR COt.lt.lAND TO ACCEPTED

SAVE DATA TO SENO

DISABLE INTERRUPTS TILL DATA SENT

CLEAR TIMEOUT COUNTER eLI

SUB CX,CX

SIO:

IN ALoSTATUS PQR:r

TEST AL, I NPT_BUF _FULL.

LOOPNZ 510

POP

OUT

5TI

RET

SHIP [T ENDP

CODE ENDS

END

AX

STATUS_PORT .AL

READ KYBOARD CONTROLLER STATUS

CHECK FOR ITS INPUT 8UFrER BUSY

WA I T FOR COMMAND TO BE ACCEPTED

GET DATA TO SEND

SEND TO KEYBOARD CONTROLLER

ENABLE INTERRUPTS AGAIN

RETURN TO CALLER

KYBD

5-137

2'

30

"

33

34

35

15

I.

11

I.

"

21

22

23

2.

25

2.

21

28

3.

31

38

39

48

.

,

.. 40

41

.2

'3

.5

4 •

63

64

65

66

67

68

69

70

7 I

72

51

58

59

60

61

62

49

50

51

52

53

54

55

56

0000

0000 F8

000 l i E

0002 56

0003 52

0004 51

0005 53

0006 E8 0000 E

0009 88 F2

0008 8A 9C 0078 R

OOOF 01 E6

0011 88 94 0008 R

0015 0802

0017HOC

0019 OA E4

0018 74 OE

0010 FE CC

001F 14 58

0021 FE CC

0023

0025

14 3F

0025 5B

0026 59

0021 SA

0028 5E

0029 IF

002A CF

73

74 ,.

11

78

79

80

81

82

83

8.

85

0028

0028 50

002C EE

0020 42

86

81

88

89

90

91

92

93

94

002E 53

002F EC

0030 A8 80

0032 75 05

0034 88 90FE

0037 CD 15

'5

9.

97

98

99

0039

0039 2A FF

0038 CI 0302

100 003E

10! 003E 2B C9

102 0040

103 0040 EC

104 0041 5A EO

105 0043 A8 80

106 0045 15 OE

101 0047 E2 F1

108 0049 4B

109 004A 15 F2

110

111 004C 58

112 004080 CC 01

113 0050 80 E4 F9

1 14 0053 E8 I C

IBM Personal COlllputer MACRO Assembler

PRT - - - - - - 06/10/55 PRINTER ADAPTER 810S

Version 2.00

I

2

3

4

5 •

1

•

10

II

12

0000

I-I

06-10-85

PAGE 118,121

TITLE PRT - - - - -

.286C

.LlST

CODE

06/10/85 PRINTER ADAPTER BIOS

SEGMENT 8YTE PUBL I C

PUBLIC PRINTER 10 1

EXTRN ODS: NEAR

INT 17 H - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ­

PRINTER 10

THIS ROUTINE PROVIDES COMMUNICATION WITH THE PRINTER

INPUT

(AH): OOH PRINT THE CHARACTER IN (ALI

ON RETURN, (AH) = I I F CHARACTER NOT BE PR I NTED (TIME OUT)

OTHER BITS SET AS ON NORMAL STATUS CALL

(AH)=OIH I N I TI ALI ZE THE PR I NTER PORT

RETURNS WITH IAHI SET WITH PRINTER STATUS

{AH): OZH READ THE PRINTER STATUS INTO IAH)

7

I

6

I

5

I

4

I i i i i

3

I i

2-1 o

I

I

I

UNUSED

TIME OUT

II

I

I I

I

I I

I

I r

I

I

L

I_

I = SELECTED

I

1-

I = OUT OF PAPER

I/O ERROR

I 1 : ACKNOWLEDGE

I

I

I

=

NOT BUSY lOX) = PRINTER TO BE USED (0.1,2) CORRESPONDING TO ACTUAL VALUES

IN ""PRINTER 8ASE AREA

OAT A AREA ¢lPR I NTER BASE CaNT A I NS THE BASE ADDRESS OF THE PR I NTER CARD I S I

AVAILABLE (LOCATED-AT BEGINNING OF DATA SEGMENT, 408H ABSOLUTE, 3 WORDS)

OAT A AREA ¢lPR I NT TIM OUT (BYTE) MAYBE CHANGE TO CAUSE 0 I FFERENT

TIME OUT WAITS. DEFAULT=20 • 4

REG I STERS (AHI IS MODIFIED WITH STATUS INFORMATION

ALL OTHERS UNCHANGED

:-----------­

ASSUME CS:CODE,DS:OATA

PRINTER 10 I

-sTT

PUSH

PUSH

PUSH

PUSH

PUSH

CALL

"OV

"OV

SHL

MOV

OR

JZ

OR

JZ

DEC

JZ

DEC

JZ

810:

PDP

POP

PDP

PDP

POP

IRET

PRDC

OS

51 ox ex

BX

ODS

SI,OX

BL .¢lPR INT_T I M_OUT[S 11

S I, I

DX.@PRINTER BASE[SI ox .DX -

B"

AH,AH

J

B20

AH

B80

AH

B50

BX ex ox

51

OS

FAR ENTRY PO I NT FOR DRG OEFD2H

INTERRUPTS BACK ON

SAVE SEGMENT

ADDRESS DATA SEGMENT

GET PR I NTER PARAMETER

LOAD TIMEOUT VALUE

WORD OFFSET INTO TABLE INTO (51)

GET BASE ADDRESS FOR PR I NTER CARD

TEST OX = ZERO. INDICATING NO PRINTER

EXIT, NO PRINTER ADAPTER AT OFFSET

TEST FOR (AH) = OOH

PRINT CHARACTER IN [ALI

TEST FOR {AHI: OIH

INITIALIZE PRINTER

TEST FOR (AH): 02H

GET PR INTER STATUS

RETURN

J RECOVER REGISTERS

RETURN TO CALLING PROGRAM

: - - - - -

820:

PRINT THE CHARACTER IN IALl

; - - - - -

PUSH

OUT

INC

DX,AL ox

CHECK FOR PR INTER BU S Y

PUSH

IN

TEST

JNZ

BX

AL,DX

AL,60H

B25

INT 15 H -DEVICE 8USY

SAVE VALUE TO PRINT

OUTPUT CHARACTER TO DATA PORT

POINT TO STATUS PORT

SAVE TIMEOUT BASE COUNT

GET STATUS PORT VALUE

IS THE PRINTER CURRENTLY BUSY

SKIP SYSTEM DEVICE BUSY CALL IF NOT

"OV

IN1

AX.90FEH

ISH

;

-----

WAIT BUSY

825:

SUB

RCL

BH,BH

BX ,2

B30:

SUB CX,CX

B35:

IN

NOV

TEST

JNZ

LOOP

DEC

JNZ

AL,DX

AH.AL

AL.80H

B.O

B35

BX

B30

POP

OR

AND

J"P

BX

AH,l

AH.OF9H

SHORT B10

FUNCT I ON 90 PR I NTER 10

SYSTEM CALL

ADJUST OUTER LOOP COUNT

CLEAR I BH)

MULTIPLY 8Y 4

INNER LOOP 164K)

GET STATUS

STATUS TO I AHJ ALSO

IS THE PRINTER CURRENTLY BUSY

GO TO OUTPUT STROBE

LOOP IF NOT

DECREMENT OUTER LOOP COUNT

MAKE ANOTHER PASS I F NOT ZERO

CLEAR IBX) FROM STACK

SET ERROR FLAG

TURN OFF THE UNUSED BITS

RETURN WITH ERROR FLAG SET

5-138 PRT

IBM Personal Computer MACRO Assembler

PRT - - - - - 06/10/85 PRINTER ADAPTER 8[OS

Verston 2.00

115 0055

116005558

1 11 0056 80 00

118 0058-42

119 0059 FA

120 005A EE

121 0058 E8 00

122 0050 E8 00

123 005F 80 OC

12-4 0061 EE

125 0062 F8

126 0063 58

121

126

129

130 006-4

131 006-4

132 0065

133 0065 88 94 0008 R

134 0069 42

135 006A EC

136 0068 EC

137 006C 81. EO

138 006E 80 E4

139 0011

140 0011 5A

141 0012 8A C2

1-42 001-4 80 F4 48

143 0077 E8 AC

144

145

146

147 0019

148 0019 50

149 001A-42

150 0018 42

151 001C BO 08

152 001E EE

153 001F 88 OFAO

154 0082

155 0082 48

! 56 0083 15 FD

151 0085 80 OC

158 0081 EE

159 0088 E8 08

160

161

162

008A

163 0081.

164

8-40:

POP

"OV

INC

CL!

OUT e"p e"p

"OV

OUT

S1l

POP

8X

AL,OOH

OX

OX,AL '.2

AL,OCH

OX,AL

AX

PRINTER STATUS

850 :

PUSH AX

860 :

MOV

I NC

IN

IN

MOV

AND

OX,IPPRINTER 8ASE[SI

OX -

J

AL,DX

AL,DX

AH,AL

AH,OF8H

B70:

POP

MOV

XOR

....IMP

OX

AL,DL

AH,48H

810

;

-----

INITIALIZE THE PRINTER PORT

860:

PUSH

INC

INC

"OV

OUT

"OV

AX

OX

OX

AL,8

DX,AL

AX,1000-4

B90:

DEC eNZ

"OV

OUT e"p

AX

890

AL,OCH

OX,AL

860

ENDP

-

CODE

END

ENDS

1-2

06-10-85

SEND STR08E PULSE

RESTORE (BX) WITH TIMEOUT COUNT

SET THE STROBE LOW 181 T ON I

OUTPUT STR08E TO CONTROL PORT

PREVENT I NTERRUPT PULSE STRETCH [NG

OUTpUT STROBE BIT > Ius < 5\,/s

110 DELAY TO ALLOW FOR LINE LOADING

AND FOR CORRECT PULSE WIDTH

SET THE -STR08E HIGH

INTERRUPTS 8ACK ON

RECOVER THE OUTPUT CHAR

SAVE (All REGISTER

GET PRINTER ATTACHMENT 8ASE ADDRESS

PO I NT TO CONTROL PORT

PRE-CHARGE +8USY LINE IF FLOATING

GET PR INTER STATUS HARDWARE 81 TS

SAVE

TURN OFF UNUSED BITS

RECOVER (AL) REG I S TER

MOVE CHARACTER r NTO (AL I

FLIP A COUPLE OF 81TS

RETURN FROM ROUTINE WITH STATUS IN AH

SAVE I ALI

PO I NT TO OUTPUT PORT

SET INIT LINE LOW

ADJUST FOR INITIALIZATION DELAY LOOP

INIT LOOP

LOOP-FOR RESET TO TAKE

INIT LOOP

NO INTERRUPTS, NON AUTO LF. [NIT HIGH

, EXIT THROUGH STATUS ROUTINE

PRT 5-139

I

I. 7

6

9

II

2

3

4

5

.

I. 13

14

15

17

16

12

27

26

29

3.

31

32

19

2.

21

22

23

2.

25

2.

33

3.

35

3.

37

36

39

••

"

'4

'5 ••

47

0000

55

5.

.,

••

57

.2

56

59

.3 ••

.5

••

66

••

71

72

73

.9

5.

51

52

53

54

7.

75

7.

77

18 0000

79

6.

61

82

91

92

93

94

95

96

91

63

84

85

86

81

88

69

90

0000 F8

0001 IE

0002 52

0003 56

0004 51

0005 51

0006 53

0001 88 F2

0009 88 FA

0008 01 E6

0000 E8 0000 E

0010 68 94 0000 R

0014 OB 02

0016 14 13

00180,1. E4

001,1. 14 16

96

99

001C FE CC

OOlE 14 48

100 0020 FE CC

101 0022 14 10

102 0024

103 0024 FE CC

104 0026 15 03

105 0028 E9 0086 R

106 0028

101 0028 58

108 002C 59

109 0020 5F

110 002E 5E

111 002F 5,1.

112 0030 IF

113 0031 CF

IBM Personal Computer MACRO Assembler Ver&ion 2.00

RS232 - - - 06/10/85 COMMUNICATIONS 8105 IRS2321

I - I

06-10-85

PAGE 116,121

1ITLE RS232 - - - 06/10/85 COMMUNICATIONS 8105 (RS2321

.LIST

CODE SEGMENT 8YTE PU8L I C

:

;

PU8LIC RS232 10 1

EXTRN AI ;NEAR ­

EXTRN DDS :NEAR

:

:

, INT 14 H - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ­

:RS232 10

TH[S ROUTINE PROVIDES BYTE STREAM

PORT ACCORDING TO THE PARAMETERS:

110 TO THE COMMUNICATIONS

(AHI= OOH INITIALIZE THE COMMUNICATIONS PORT

(AU HAS PARAMETERS FOR [NIT[ALIZATION

7 • 5

- - - - - 8AUD RATE --

4

-PAR 1TY-

2

STOP81 T

I •

--WORD LENGTH-­

000 1 10

001 150

010 300 o

I I 600

100 1200

101 2400

XO NONE o

I ODD

I I EVEN

I

2

10 1 BI TS

11 8 BITS

1 10 4600

1 1 1 9600

ON RETURN. CONDITIONS SET AS IN CALL TO COMMO STATUS (AH=03HI

IAHI= 01H SEND THE CHARACTER IN (ALlOVER THE COMMO LINE

(AL) REGISTER IS PRESERVED

ON EX[T, BIT 1 OF AH IS SET IF THE ROUTINE WAS UNABLE TO

TO TRANSMIT THE BYTE OF DATA OVER THE LINE.

IF B[T 1 OF AH IS NOT SET, THE

REMAINDER OF (AH) IS SET AS IN A STATUS REQUEST.

REFLECTING THE CURRENT STATUS OF THE LINE.

IAH) = 02H RECEIVE A CHARACTER IN (ALI FROM COMMO LINE 8EFORE

RETURN I NG TO CALLER

ON EXIT, (AHI HAS THE CURRENT LINE STATUS. AS SET 8Y THE

THE STATUS ROUTINE, EXCEPT THAT THE ONLY 81TS

LEFT ON ARE THE ERROR BITS 11,4,3,2,1)

IF (AHI HAS 81T 7 ON (T,IME DUn THE REMAINING

81TS ARE NOT PREDICTABLE.

THUS, (AH) IS NON ZERO ONLY WHEN AN ERROR OCCURRED.

IAHI= 03H RETURN THE COMMO PORT STATUS IN (AX)

(AH) CONTAINS THE LINE CONTROL STATUS

81T 7

=

TIME OUT

81T 6

BIT 5

BIT 4

81T 3

=

TRANSMIT SHIFT REGISTER EMPTY

=

TRANSMIT HOLDING REGISTER EMPTY

=

BREAK DET~CT

=

FRAMING ERROR

=

PARITY ERROR 81T 2

81 T 1

BIT 0

=

OVERRUN ERROR

=

DATA READY

(ALI CONTAINS THE MODEM STATUS

8IT 7

=

RECEIVE LINE SIGNAL DETECT

BIT 6

BIT 5

81T 4

81T 3

81T 2

81T 1

8IT 0

=

RING INDICATOR

=

DATA SET READY

=

CLEAR TO SEND

=

DELTA RECEIVE LINE SIGNAL DETECT

=

TRAILING EDGE RING DETECTOR

=

DELTA DATA SET READY

=

DELTA CLEAR TO SEND

!OX)

=

PARAMETER INDICATING WHICH RS232 CARD (0,1 ALLOWED)

:

J

J

DATA AREA _RS232 BASE CONTAINS THE BASE ADDRESS OF THE 6250 ON THE CARD

LOCATION 40QH CONTAINS UP TO 4 R5232 ADDRESSES POSSIBLE

DATA AREA LABEL ttRS232 TIM OUT 1BYTE) CONTAINS OUTER LOOP COUNT

VALUE FOR TIMEOUT 1DEFAULT; 1 )

; OUTPUT

I AX MOD I F I ED ACCORD I NG TO PARAMETERS OF CALL

ALL OTHERS UNCHANGED

; - - - - -

,1.2:

,1.3:

ASSUME CS:CODE,DS:DATA

PROC FAR

OEC

JNZ

JMP

POP

POP

POP

POP

POP

POP

IRET

VECTOR TO APPROPRIATE ROUTiNE

STI

PUSH

PUSH

PUSH

PUSH

PUSH

PUSH

MOV

MOV

SHL

CALL

MOV

OR

JZ

OR

JZ

OEC

JZ

OEC

JZ

OS

OX

S!

01

CX

BX

SI,DX

DI,DX

51.1

005

A3

AH.AH

A4

AH

A5

AH

AI2

AH

A3

Al6

BX

CX

01

5 I

OX

OS

I NTERRUPTS BACK ON

SAVE SEGMENT

RS232 VALUE TO (5 I)

AND TO (011 IFOR TIMEOUTSI

WORD OFFSET

GET 8ASE ADDRESS

TEST FOR 0 BASE ADDRESS

RETURN

TES T FOR (AH)

=

OOH

COMMO INITIALIZATiON

TEST FOR {AHI= OIH

SEND (ALI

TEST FOR (AH) = 02H

RECEIVE INTO {ALI

TEST FOR (AH) '" 03H

COMMUNICATION STATUS

RETURN FROM RS232

1 RETURN TO CALLER. NO ACT I ON

5-140 RS232

IBM Personal Computer MACRO AS.!Iembler Version 2.00

RS232 - - - 06/10/e5 COMMUNICATIONS BIOS (RS23Z)

114

115 l i b

1 17 0032

1 18 0032 8,0, EO

119 003483 C2 03

120 0037 BO 80

121 0039 EE

122

123

124

125 003,0. 8A 04

126 003C Bl 04

127 003E 02 C2

128 0040 81 E2 OOOE

129 0044 SF 0000 E

130 0047 03 FA

131 0049 88 94 0000 R

132 004D 42

133 004E 2E: 8A 45 01

134 0052 EE

135 0053 4A

136 0054 EB 00

137 0056 2E: SA 05

138 0059 EE

139 005A 83 C2 03

140 0050 8,0, C4

141 005F 24 IF

142 0061 EE

143 0062 4,0,

144 0063 4,0,

145 0064 EB 00

146 0066 80 00

147 0068 EE

148 0069 E8 48

149

150

151

152 0068

153 006B 50

154 006C 83 C2

155 006F BO 03

156 0071 EE

157 0072 42

158 0073 42

159 0074 87 30

160 0076 E8 00C5 R

161 0079 74 as

162 0078

163 0078 59

164 001e 8,0. CI

165 007E

166 007E 80 CC 80

167 0081 EB ,0,8 lb.

169 0083

170 0083 4,0,

171 0084

172 0084 81 20

173 0086 E8 00C5 R

174 0089 75 FO

175 00S8

176 008B 83 EA 05

177 008E 59

178 008F 8,0, CI

179 0091

180 0092

EE

E8 97

,.2

'.3

184 0094

185 0094 83 C2 04

186 009780 01

187 0099 EE

188 009,0, 42

189 0098 42

190 009C

191 009C 87 20

192 009E ES DOCS R

193 00,0.1 1508

194 00,0.3

195 00,0.3 4,0,

196 00,0,4

197 00,0.4 B7 01

198 00A6 E8 00C5 R

199 00,0,9 75 03

200 00,0,8

201 00A8 80 E4 IE

202

203 OOAE 88 94 0000 R

204 0082 EC

205 00B3 E9 0028 R

20b

207

20.

209 00B6

210 0086 8B 94 0000 R

211 008,0. 83 C2 05

212 OOBD EC

213 OOBE 8,0, EO

214 OOCO 4Z

215 OOCI EC

216 00C2 E9 0028 R

1-2

06-10-85

PAGE

;-----

INITIALIZE THE COMMUNICATIONS FORT

,0.4:

MOV

AOO

MOV

OUT

AH,AL

DX,3

AL,80H

DX,AL

DETERM I NE 8AUD RATE D I V I SOR

SAVE INITIALIZATION PARAMETERS IN (AHI

POINT TO 8250 CONTROL REGI STER

SET DLA8='

MOV

MOV

ROL

ANa

MOV

AOO

MOV

INC

MOV

OUT

OEC

JMP

MOV

OUT

AOO

MOV

ANa

OUT

OEC

OEC

JMP

MOV

OUT

JMP

DL,AH

CL,4

DL,CL

OX,OEH

DI ,OFFSET

DI,DX

AI

DX,II!IRS232 8ASE(S]] ox

AL.CS: {DI]+ 1

DX,AL ox

'-2

AL,eS: [01 J aX,AL

OX,3

AL,AH

AL,OIFH

DX,AL ox

,-2

AL,O

DX,AL

SHORT ,0.18

GET PARAMETERS TO lOLl

I SOLA TE THEM

BASE OF TABLE

; PUT INTO INDEX REGISTER

; POINT TO HIGH ORDER OF DIVISOR

GET HIGH ORDER OF OIVISOR

SET ms OF DIVISOR TO 0

I/O DELAY

GET LOW ORDER OF D I V I SOR

SET LOW OF DIVISOR

GET PARAMETERS BACK

STRIP OFF THE BAUD BITS

LINE CONTROL TO 8 BITS

I/O DELAY

I NTERRUPT ENABLES ALL OFF

COM_STATUS

SEND CHARACTER IN (AL) OVER COMMO LINE

AS:

,0,7:

A9:

AIO:

AI I :

( - - - - ­

PUSH

AOO

MOV

OUT

INC

INC

MOV

CALL

JE

DX,4

AL,3

DX,AL ox ox

8H,30H

WAIT FOR STATUS '9 ex

AL,CL

SAVE CHAR TO SEND

MODEM CONTROL REG I STER

DTR AND RTS

DATA TERMINAL READY, REQUEST TO SEND

MODEM STATUS REGISTER

OAT A SET READY & CLEAR TO SEND

ARE BOTH TRUE

YES, READY TO TRANSMI T CHAR

POP

MOV

OR

JMP

AH,80H

A3

I RELOAD DATA BYTE

INDICATE TIME OUT

RETURN

DEC

MOV

CALL

..JNZ

OX

BH,20H

WA I T FOR STATUS

,0.7-

SUB

POP

MDV

OUT

..JMP

OX,S

CX

AL,CL

DX,AL

A3

RECE 1VE CHARAC1ER FROM COMNO LINE

CLEAR TO SEND

LINE STATUS REGISTER

WAIT SEND

IS TRANSM I TTER READY

TEST FOR TRANSMITTER READY

RETURN 'It 1 TH TIME OUT SET

OUT CHAR

DATA PORT

RECOVER IN CX TEMPORAR I L Y

MOVE CHAR TO AL FOR OUT, S T A TUS IN AH

OUTPUT CHARACTER

RETURN

,0.121

A13;

A151

A16:

A I 7:

ADD

MOV

OUT

INC

INC

MOV

CALL

..JNZ

MOV

CALL

..JNZ

AND

MOV

IN

JMP

DX,4

AL,I

DX,AL ox ox

8H,20H

WA IT

,0,8 -

FOR STATUS ox

BH,I

WA I T FOR STATUS

,0,8 -

AH,OOOII t lOB

DX,IPRS232 BASE[S!]

A L , D X -

,0.3

MODEM CONTROL REG I STER

DATA TERM 1 NAL READY

MODEM STATUS REGISTER

WAIT DSR

DATA-SET READY

TEST FOR DSR

RETURN WITH ERROR

WAIT DSR END

LINE-STATUS REGISTER

WA I T RECV

RECEIVE BUFFER FULL

TES T FOR RECE 1 VE BUFFER FULL

SET T I ME OUT ERROR

GET CHAR

TEST FOR ERROR CONDITIONS ON RECEIVE

DATA PORT

GET CHARACTER FROM LINE

RETURN

;-----

A 18:

COMMa PORT STATUS ROUT INE

MOV

ADD

IN

MOV

INC

IN

..JMP

DX,<l'IRS232 BASE[SI]

OX,5 -

AL,OX

AH,AL ox

AL,DX

,0,3

CONTROL PORT

GET LINE CONTROL STATUS

PUT IN (AH) FOR RETURN

POINT TO MODEM STATUS REGI STER

GET MODEM CONTROL STATUS

RETURN

RS232 5-141

IBM Person. I Computer MACRO Assembler

RS232 - - - 06/10/85

Ver$igr'l2.00

COMMUNICATIONS BIOS (RS232)

21T

21e

21.

220

221

222

223

224

225

226

227 00C5

22"

22.

OOC5 6A 90 007C R

230

231

232 OOC9 55

233 OOCA 53

23' OOCS 50

235 OOCC 61 E5 OOFF

2'6 OODO D I 05

237 00D2 D1 o!l

238 0004

2"

24'

0004 2S C9

OODI!>

241 0006 EC

2.2 0007 8A EO

2'3 0009 22 Cl

2"

OODS 3A C1

245 0000 14 01

2 ••

247 OODF E2 F5

2"

24'

2.0

251

OOE! 40

00E2 75 Fa

252 OOE" OA FF

25' 00E6

25. 00E6 50

255 00E7 C3

25.

257 OOE8

258

25. OOEe

260

261 00E8

262

1-3

06-10-8S

;

PAGE

;

--

-

---------

-

-

------

--

-----------------­

WAIT FOR STATUS ROUTINE

:ENTRY: (SHI& STATUS SIT (51 TO LOOK FOR

; 10X)= ADDRESS OF STATUS REG

;EXIT: ZERO FLAG ON

=

STATUS FOUND

;

I

ZERO FLAG OFF

=

TIMEOUT.

IAHI::: 'LAST STATUS READ

;

--------

- - -

-

- -

----------------

-

--------­ :

WAIT FOR STATUS PROC

MOV

NEAR

BL.ORS232_TIM_OUT[D1J I LOAD OUTER LOOP COUNT

; - - - - -

WFSO:

WFSI;

ADJUST OUTER LOOP COUNT

PUSH

PUSH

POP

AND

ReL

ReL

SUB

BP

BX

BP

BF,OOFFH

8F,I

8F,I

IN

MOV

AND eMP

JE

LOOP

CX,CX

AL,DX

AH,AL

AL,BH

AL,6H

WFS_ENO

DEC

JNZ

WFSI

SF'

WFSO

BH,SH DR

WFS END:

POP

RET

BP

WA I T_FOR_STATUS ENDP

RS232_IO_'

CODE ENOS

END

ENOP

SAVE IBP)

SAVE (BX)

USE SP FOR OUTER LOOP COUNT

5TR IP HIGH BITS

MULTI PLY OUTER COUNT 8Y 4

GET STATUS

MOVE TO IAH)

ISOLATE BITS TO TEST

EXACTLY::: TO MASK

RETURN WITH ZERO FLAG ON

; TRY AGAIN

; SET ZERO FLAG OFF

RESTORE (SP I

5-142 RS232

71

72

73

74

75

76

77

78

7.

80

81

82

83

8'

85

86

87

88

89

90

91

92

93

94

.. 95

96

97

98

100

101

102

103

10.

105

106

107

108

109

110

,,.

113

114

'8

49

50

51

52

53

5.

55

56

57

58

59

60

61

62

63

6.

65

66

67

68

69

70

16

17

18

19

20

21

22

23

2.

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

'4

45

'6

47

IBM Personal Compute,. MACRO Assembler

VIDEOI - - - Olb/lO/as YIDEO DISPLAY BIOS

Ver5ion 2.00

4

5

6

7

8

9

10

11

12

13

0000

1-1

O&-IO-aS

PAGE IIa,I21

TITLE YIDEOI --Olb/l0/a5 VIDEO DISPLAY BIOS

.28&C

.LIST

CODE SEGMENT BYTE PUBL I C

PUBLIC ACT DISP PAGE

PUBL I C READ AC CURRENT

PUBL I C READ-CURSOR

PUBL I C READ-DOT

PUBL I C READ-LPEN

PUBL I C SCROLL DOWN

PUBL I C SCROLL-UP

PUBL I C SET COLOR

PUBL I C SET-CPOS

PUBL I C SET-CTYPE

PUBL I C SET-MODE

PUBL I C WR I1'E AC CURRENT

PUBL I C WR I TE-C CURRENT

PUBL I C WR I TE-DOT

PUBL I C WR I TE-TTY

PUBLIC YIDEO-IO 1

PUBL I C Y I DEO:STATE

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

BEEP:NEAR

CRT CHAR GEN I NEAR

DDS:NEAR-

1045 :WORD

MIb:BYTE

M1 :BYTE

SPEEKER BEEP ROUT I NE

CHARACTER GENERATOR GRAPHICS TABLE

LOAD (OS! WITH OATA SEGMENT SELECTOR

REGEN BUFFER LENGTH TABLE

COLUMNS PER MODE TABLE

MODE SET VALUE PER MODE T ABL.E

I NT 10 H ------------------------------------------------ - - --------------­

VIDEO 10

-THESE ROUTINES PROVIDE THE CRT DISPLAY INTERFACE

THE FOLLOWING FUNCTIONS ARE PROVIDED:

(AH)= OOH SET MODE (ALl CONTAINS MODE VALUE

(AL) OOH 40X25 BW MODE (POIER ON DEFAULT I

(AL)

(AL)

(AL)

0 I H

02H

03H

40X25 COLOR aoX25 BW

80X25 COLOR

(ALI

(AL)

(ALI

GRAPH I CS MODES

04H 320X200 COLOR

05H 320X200 BI MODE

OlbH 640X200 BI MODE

(AL) = 01H 80X25 MONOCHROME IUSED INTERNAL TO VIDEO ONLY)

••• NOTES -BW MODES OPERATE SAME AS COLOR MODES, BUT COLOR

BURST I S NOT ENABLED

-CURSOR IS NOT DISPLAYED IN GRAPHICS MODE

(AHI::: OIH SET CURSOR TYPE

(CH) BITS 4-0 '" START LINE FOR CURSOR

•• HARDWARE WILL ALWAYS CAUSE BLINK

•• SETTING BIT 5 OR Ib WILL CAUSE ERRATIC BLINKING

OR NO CURSOR AT AL.L

(CL.I • BITS 4-0 ::: END LINE FOR CURSOR

I AHI::: 02H SET CURSOR POSITION

(DH,DLI = ROW,COLUMN (OOH,OOH) IS UPPER LEFT

(BHI = PAGE NUMBER (MUST BE OOH FOR GRAPHICS MODES)

(AHI= 03H READ CURSOR POSITION

IBH) '" PAGE NUMBER (MUST BE OOH FOR GRAPHICS MODES)

ON EXIT (DH,DLI • ROW,COLUMN OF CURRENT CURSOR

(CH,CL) ::: CURSOR MODE CURRENTLY SET

IAHI= 04H READ LIGHT PEN POSITION

ON EXIT:

(AHI = OOH -- LIGHT PEN SWITCH NOT DOWNINOT TRIGGERED

(AHI ::: 01H -VALID LIGHT PEN VALUE IN REGISTERS

(DH,DLI '" ROW,COLUMN OF CHARACTER LP POSITION

(CHI = RASTER LINE 10-199)

(BX) = PIXEL COLUMN (0-319,639)

(AHI= OSH SELECT ACTIVE DISPLAY PAGE (VALID ONLY FOR ALPHA MODES)

(ALI = NEW PAGE VALUE (0-1 FOR MODES 0&1, 0-3 FOR MODES 2&3)

(AH) '" 06H SCROLL ACT I VE PAGE UP

(ALI'" NUMBER OF LIlES, ( LINES BLANKED AT BOTTOM OF WINDOW I

( AL I '" 0 OH MEANS BLANK ENT I RE I I NDOI

(CH,CLI '" ROW,COLUMN OF UPPER LEFT CORNER OF SCROLL

(DH,DLI = ROW,COLUMN OF LOWER RIGHT CORNER OF SCROLL

(BH) = ATTR I BUTE TO BE USED ON BLANK L lIE

(AHI= 01H SCROLL ACTIVE PAGE DOWN

(ALI = NUMBER OF LINES, INPUT LINES BLANKED AT TOP OF WINDOW

(AL) = OOH MEANS BLANK ENTIRE IINDOW

I CH, CLI '" ROW, COLUMN OF UPPER LEFT CORNER OF SCROLL

(DH,DLI = ROW,COLUMN OF LOIER RIGHT CORNER OF SCROLL

1BH) = ATTR I BUTE TO BE USED ON BLANK LINE

CHARACTER HANDL I NG ROUT I NES

(AHI= 08H READ ATTRIBUTE/CHARACTER AT CURRENT CURSOR POSITION

IBH) ::: DISPLAY PAGE (YALID FOR ALPHA MODES ONLY)

ON EXIT;

(AL) = CHAR READ

(AHI = ATTRIBUTE OF CHARACTER READ (ALPHA MODES ONLY)

(AHI: 09H WRITE ATTRIBUTE/CHARACTER AT CURRENT CURSOR POSITION

(BH) : DISPLAY PAGE (VALID FOR ALPHA MODES ONLY)

(CX) '" COUNT OF CHARACTERS TO WR ITE

(AL) '" CHAR TO WR ITE

(BLl = ATTRIBUTE OF CHARACTER (ALPHA) ICOLOR OF CHAR (GRAPHICS)

SEE NOTE ON WRITE DOT FOR BIT 7 OF BL • I.

(AH) = OAH WR I TE CHARACTER ONLY AT CURRENT CURSOR POS I T I ON

IBHI =: DISPLAY PAGE (VALID FOR ALPHA MODES ONLY)

(CXI = COUNT OF CHARACTERS TO WRITE

{ALI", CHAR TO WRITE

NOTE; USE FUNCTION (AH)" 09H IN GRAPHICS MODES

FOR READ/WRITE CHARACTER INTERFACE WHILE IN GRAPHICS MODE, THE

CHARACTERS ARE FORMED FROM A CHARACTER GENERATOR IMAGE

MAINTAINED IN THE SYSTEM ROM. ONLY THE 1ST 128 CHARS

ARE CONTAINED THERE. TO READIWRITE THE SECOND 128 CHARS.

THE USER MUST INITIALIZE THE POINTER AT INTERRUPT IFH

(LOCATION 000lCH) TO POINT TO THE lK BYTE TABLE CONTAINING

THE CODE POINTS FOR THE SECOND 128 CHARS (128-255).

FOR WRITE CHARACTER INTERFACE IN GRAPHICS MODE, THE REPLICATION FACTOR

CONTAINED IN (CX) ON ENTRY WILL PRODUCE VALID RESULTS ONLY

FOR CHARACTERS CONTAINED ON THE SAME ROI. CONTINUATION TO

SUCCEEDING LINES WILL NOT PRODUCE CORRECTLY.

VIDEO1 5-143

115

"'

118

119

120

121

122

123

141

142

143

144

145

140

147

148

149

150

124

125

126

127

128

129

130

131

132

133

134

135

130

137

138

139

140

151

152

153

154

155

150

157

158

159 toO tol

162

163 to4 to5 to6 to7

168 to9

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186 0000 0067 R

187 0002 0137 R

188 0004 015C R

189 0006 0184 R

190 0008 0771 R

191 OOOA 0 19B R

192 OOOC 0208 R

193 OOOE 02A7 R

194 0010 02F9 R

195 0012 0353 R

196 0014 0385 R

197 0016 OIBF R

198 0016 0446 R

199 OOIA 0435 R

200 OOIC 06EA R

201 OOIE 01E5 R

202 0020 012E R

203 0022 012E R

204 0024 012E R

205 0026 0382 R

206 = 0026

207

208 0028

209 0028 F8

210 0029 FC

21 I 002A 06

212 0028 IE

213 002C 52

214 002051

215 002E 53

216 002F 56

217 0030 57

21 e

0031 55

219 0032 E8 0000 E

220 0035 BE 8800

221 0038 8B 3E 0010 R

222 003C 81 E7 0030

223 0040 83 FF 30

224 0043 75 03

225 0045 BE 8000

226 0048

227 0046 60 FC t 3

228 004B 74 02

IBM Personal Computer MACRO Assembler

VIDEOI ~~06/10/65 VIDEO DISPLAY BIOS

VerSion 2.00 1-2

06-10-85

GRAPHICS INTERFACE

I AH) = SET COLOR PALETTE

IBHI PALETTE COLOR 10 BEING SET 10-1271

IBLI :: COLOR VALUE TO BE USED WITH THAT COLOR 10

NOTE: FOR THE CURRENT COLOR CARD, THIS ENTRY POINT HAS

MEANING ONLY FOR 320X200 GRAPHICS.

COLOR 10:: 0 SELECTS THE BACKGROUND COLOR (0-15)

COLOR 10 1 SELECTS THE PALETTE TO BE USED:

0:: GREEN(IJ/REDI2)fYELLOWI3) t :: CYANlllfMAGENTA(2JfWHITE(3)

IN 40X25 OR 80X25 ALPHA MODES, THE VALUE SET FOR

PALETTE COLOR 0 INDICATES THE BORDER COLOR

TO BE USED (VALUES 0-31, WHERE 16-31 SELECT

THE HIGH 1NTENS I TY BAC';GROUNO SET.

IAH)= OCH WRITE DOT lOX I = ROW NUMBER

I CX I = COLUMN NUMBER

( AL I :: COLOR VALUE

IF SIT 7 OF AL = I, THEN THE COLOR VALUE IS EXCLUSIVE

ORed Wt TH THE CURRENT CONTENTS OF THE DOT

I AH) = ODH READ DOT lOX I

I

CX I

=

ROW NUMBER

=

COLUMN NUMBER

'AL J RETURNS THE DOT READ

TELETYPE ROUT I NE FOR OUTPUT

I AHI = WR I TE TELETYPE TO ACT I VE PAGE

, AL I =

CHAR TO WR I TE

" BL J = FOREGROUND COLOR I N GRAPH I CS MODE

NOTE - SCREEN WIDTH I S CONTROLLED BY PREV 10US MODE SET

1AH) = OFH CURRENT V IDEO STATE

RETURNS THE CURRENT V IDEO STATE

I AL J

=

MODE CURRENTLY SET I SEE 1 AH I

=

OOH FOR EXPLANA T I ON I

, AH J

, BH J

= NUMBER OF CHARACTER COLUMNS ON SCREEN

= CURRENT ACT I VE 0 I SPLA Y PAGE

I AH) = RESERVED

I AH) = 11H RESERVED

I AHI

IAHJ

=

12H RESERVED

= 13H WRITE STRING

ES:BP -

CX -

POINTER TO STRING TO BE WRITTEN

LENGTH OF CHARACTER STR I NG TO WR I TTEN

OX CURSOR POSITION FOR STRING TO BE WRITTEN

BH PAGE NUMBER

(ALI::: OOH WRITE CHARACTER STRING

BL ATTRIBUTE

(AU=

STRING IS <CHAR,CHAR, . . . . CHAR>

CURSOR NOT MOVED

WRITE CHARACTER STRING AND MOVE CURSOR

BL ATTR IBUTE

STR I NG I S <CHAR, CHAR, ,CHAR>

CURSOR I S MOVED

(ALI= 02H WRITE CHARACTER AND ATTRIBUTE STRING

(VALID FOR ALPHA MODES ONLYI

STRING IS <CHAR,ATTR,CHAR,ATTR ,CHAR,ATTR>

CURSOR I S NOT MOVED

IAlI = 03H WRITE CHARACTER AND ATTRIBUTE STRING AND MOVE CURSOR

(VALID FOR ALPHA MODES ONLYI

STRING IS <CHAR,ATTR,CHAR,ATTR..

CURSOR I S MOVED

,CHAR,ATTR>

CARRIAGE RETURN, LINE FEED, BACKSPACE, AND BELL ARE

TREATED AS COMMANDS RATHER THAN PRINTABLE CHARACTERS.

BX,CX,DX,SI,DI ,BP,SP,OS,ES,SS PRESERVED DURING CALLS EXCEPT FOR

BX,CX,OX RETURN VALUES ON FUNCTIONS 03H,04H,OOH AND ODH. ON ALL CALLS

AX IS MODIFIED.

M2:

-

10 I

ST I

CLD

PUSH

PUSH

PUSH

PUSH

PUSH

PUSH

PUSH

PUSH

CALL

MOV

MDV

AND

CMP oNE

MOV

ASSUME CS:CODE,DS:DATA,ES:NOTHING

OW

DW

OW

OW

DW

OW

OW

OW

OW

EOU

DW

DW

DW

DW

DW

DW

OW

OW

OW

DW

OW

OFFSET SET MODE

OFFSET SET-CTYPE

OFFSET SET-CPOS

OFFSET REA5 CURSOR

OFFSET REAO-LPEN

OFFSET ACT 51 SP PAGE

OFFSET SCROLL UP

OFFSET SCROLL-DOWN

OFFSET READ AC CURRENT

OFFSET WR I TE AC CURRENT

OFFSET WR I TE-C CURRENT

OFFSET SET COLOR

OFFSET WRITE DOT

OFFSET READ DOT

OFFSET WRITE TT,(

OFFSET VIDEO-STATE

OFFSET V IDEO-RETURN

OFFSET VlDEO-RETURN

OFFSET V IDEO-RETURN

OFFSET WR I TE=STR I NG

S-MI

; TABLE OF ROUTINES WITHIN VIDEO I/O

RESERVED

RESERVED

RESERVED

CASE 19H, WRITE STRING

PROC

ES

OS

OX ex

BX

51

NEAR

DI

BP

ODS

SI,OB600H

OI,@EQUIP FLAG

0l,30H -

0l,30H

M2

SI,OBOOOH

ENTRY PO I NT FOR ORG OF065H

I NTERRUPTS BACK ON

SET OlRECTION FORWARD

SAVE WORK AND PARAMETER REGI STERS

PO I NT OS: TO DA T A SEGMENT

GET SEGMENT FOR COLOR CARD

GET EQU I PMENT FLAGS SETT! NG

I SOLATE CRT SWITCHES

IS SETT J NG FOR BW CARD?

SK I P I F NOT BW CARD

ELSE GET SEGMENT FOR BW CARD

CMP oE

AH,I3H

M'

TEST FOR WRITE STRING OPERATION

SKIP IF ES:BP VALID AS PASSED

5-144 VIDE01

IBM Pel"sonal Computel" MACRO Assemblel"

VIDEOI --06/10/85 VIDEO DISPLAY BIOS

Vel"SiOM 2.00

229 0040 8E C6

230 004F

231 004F SB FO

232 0051 CI EE OS

233 0054 01 E6

234 005& 83 FE 28

235 0059 73 09

23.

237 005B SA 26 0049 R

238 005F 2EI FF 1.4 0000 R

23.

240 0064

241 0064 E9 012E R

242 00&7

243

24.

24S

24.

247

246

24.

250

251

252 0067

253 0067 BA 0304

254 0061. 83 FF 30

255 0060 75 04

256 006F' BO 07

257 0071 B2 B4

258 0073

259 0073 A2 0049 R

260 007& 89 16 0063 R

2&1 0071. C6 06 0084 R 18

2&2 007F IE

2&3 0080 50

2&4 0081 98

2&5 0082 8B FO

2&& 0084 2EI 8A S4 0000 E

2&7 0089 A2 0065 R

2&8 008C 24 37

2&9 008E 52

270 008F 83 C2 04

271 0092 EE

272 0093 5A

273

274 0094 2B DB

275 009& 8E DB

27& 0098 C5 IE 0074 R

277

278 009C 58

279 0090 B9 00 I 0

280 OOAO 3C 02

281 00A2 72 OE

282 00A4 03 09

283 OOA& 3C 04

284 00A8 72 OB

285 OOAA 03 09

286 OOAC 3C 07

287 OOAE 72 02

288 0080 03 09

26'

2.0

291

292 00B2

293 00B2 50

294 00B3 8B 47 OA

295 00B6 86 EO

29& 00B8 IE

297

298 00B9 E8 0000 E

299 OOBC A3 0060 R

300

30 I OOBF IF

302 OOCO 32 E4

303

304

305

30& 00C2

307 00C2 8A C4

308 00C4 EE

309 00C5 42

310 OOC& FE C4

31 I OOCS 8A 07

312 OOCA EE

313 OOCB 43

314 OOCC 4A

315 OOCO E2 F3

316 OOCF 58

317 0000 IF

316

319

320

321

322 0001 33 FF

323 0003 89 3E 004E R

324 0007 C& 0& 00&2 R 00

325 OODC B9 2000

32& OOoF 3C 04

327 OOE 1 72 01.

328 00E3 3C 07

329 00E5 74 04

330 00E7 33 CO

331 00E9 E8 as

332 OOEB

333 OOEB B5 08

334 OOEo

335 OOEO B8 0720

336 OOFO

337 OOFO F31 AB

336

33'

340

34 I 00F2 88 16 0063 R

342 00F6 S3 C2 04

1-3

06-10-85

M3t

MOV

MOV

SHR

SAL eMP

ON8

MOV

..IMP

ES,SI I SET UP TO POINT AT VIDEO MEMORY AREAS

SI,AX

S 1,8

S 1,1

SI,Mll

M4

MOVE COMMAND TO LOOK UP REG I STER

SHIFT COMMAND TO f;ORM BYTE OFFSET

TIlES 2. FOR WORD TABLE LOOKUP

TEST FOR WITHIN TABLE RANGE

BRANCH TO EX I T I F NOT A VAL I 0 COMMAND

AH,OCRT MODE I MOVE CURRENT MODE II-no AH

WORD PTJ!( CS:[SI+OFFSET Mt] I GO TO SELECTED FUNCTION

;

1.44: ; COMMAND NOT VALID

VIDEO

..IMP

[0 I

I - - - -::- --

; SET MODE

VIDEO RETURN

ENDP ­

; 00 NOTHING IF NOT IN VALID RANCE

=-

~---

------------------------------------------­

I

THIS ROUTINE INITIALIZES THE ATTACHMENT TO

; I NPUT THE SELECTED MODE. THE SCREEN I S BLANKED.

; OUTPUT

I AL 1

=

MODE SELECTED I RANGE 0 - 7 )

;

;~~

-

~;~~

NONE

-

-

------

;~;~

-

---

~~~~

--- -

--

- - - - - - - - - - - - - - - -

--

- - - -­

MOV

CMP

JNE

MOV

MOV

DX.03D4H

DI.30H

M8

AL,7

DL, OB4H

ADDRESS OF COLOR CARD

IS BW CARD INSTALLED

OK WITH COLOR

INDICATE INTERNAL BW CARD MODE

ADDRESS OF BW I MONOCHROME I CARD

MB:

MOV

MOV

MOV

PUSH

PUSH

C8W

MOV

PCRT MODE, AL

OADDR 6845, OX

OROWS-;25-1 as

AX

MOV

MOV

ANa

PUSH

AOO

OUT

POP

SI,AX

AL,CS; [SI + OFFSET 1.47]

PCRT MODE SET .Al

AL,037H

OX

DX,4

DX,Al

OX

-

ASSUME DS:ABSO

SU8 BX,BX

MOV

LOS

DS,ex

8X.OPARM PTR

ASSUME DS:CODE ­

POP

MOV

CMP

AX

CX.I6

AL,2

JC

AOO

M'

BX.CX

CMP

JC

AOO

CMP

JC

AOO

AL.4

M' ex.cx

AL.7

M'

8X,CX

SAVE MODE I N GLOBAL VAR I A8LE

SAVE ADDRESS OF BASE

INITIALIZE DEFAULT ROW COUNT OF 25

SAVE POINTER TO DATA SEGMENT

SAVE MODE NUMBER (AL)

CLEAR HIGH BYTE OF ~ODE

; SET TABLE_ POINTER. INDEXED BY MODE

I GET THE MODE SET VALUE FROM TABLE

I SAVE THE MODE SET VALUE

I VIDEO OFF. SAVE HIGH RESOLUTION BIT

I SAVE OUTPUT PORT VALUE

I PO I NT TO CONTROL REG I S TER

I RESET VIDEO TO OFF TO SUPPRESS ROLLING

I BACK TO BASE REG I STER

; SET UP FOR ABSO SEGMENT

I ESTA8L:ISH VECTOR TAeLE ADDRESSING

I GET POINTER TO VIDEO PARMS

RECOVER MODE NUMBER IN (AL) lENGTH OF EACH ROW OF TABLE

DETERM I NE WH I CH ONE TO USE

MODEISOORI

NEXT ROW OF INITIALIZATION TABLE

MODEIS20R3

MOVE TO GRAPHICS ROW OF INIT_TABLE

MODE IS 4,5, OR &

MOVE TO BW CARD ROW OF INIT_TA8LE

8X POINTS TO CORRECT ROW OF INITIALIZATION TABLE

1049:

PUSH

MOV

AX

AX,[8X+IO]

XCHG

PUSH

AH,AL as

ASSUME DS:DATA

CALL 005

MOV eIICURSOR MODE,AX

ASSUME DS:CODE­

POP as

XOR AH,AH

OUT INIT

SAVE MODE IN (AU

GET THE CURSOR MODE FROM THE TABLE

PUT CURSOR MODE IN CORRECT POSITION

SAVE TABLE SEGMENT PO INTER

POINT OS TO DATA SECiMENT

PLACE INTO BIOS DATA SAVE AREA

I RESTORE THE TABLE SEGMENT POINTER

I AH I S REG I STER NUMBER OUR I NG LOOP

1-----

LOOP THROUGH TABLE, OUTPUTTING REGISTER ADDRESS, THEN VALUE FROM TABLE

I INITIALIZATION LOOP

1 GET 6S45 REG I STER NUMBER MOV

OUT

INC

INC

MOV

OUT

INC

OEC

AL,AH

DX,Al

OX

AH

AL, [BX] aX,Al

8X

OX

LOOP

POP

POP

MIa

AX as

ASSUME OS:OATA

; POINT TO DATA PORT

I NEXT REG I STER VALUE

I GET TABLE VALUE lOUT TO CHIP

; NEXT IN TABLE

I BACK TO PO I NTER REG I S TER

I 00 THE WHOl,.E TABLE

1 GET MODE BACK I NTO' I Al I

I RECOVER SEGMENT VALUE

FILL REGEN AREA WITH BLANK

1041 I:

10412:

M13:

; - - - - -

XOR

MOV

MOV

MOV

CMP

OC

CMP

JE

XOR

OMP

MOV

MOV

01,01 eIICRT START .01

(tACTTvE PAGE.O

CX.8192-

AL,4

MI2

Al,.,7

M"

AX,AX

SHORT MI3

CH,08H

SET UP PO I NTER FOR REGEN

START ADDRESS SAVED IN GLOBAL

SET PAGE VALUE

NUMBER OF WORDS I N COLOR CARD

TEST FOR GRAPH I CS

NO GRAPHICS INIT

TEST FOR BW-CARD

BW CARD INIT

FILL FOR GRAPHICS MODE

CLEAR BUFFER

BW CARD I NIT

BUFFER 51 ZE ON BW CARD (20481

NO GRAPHICS INIT

FILL CHAR FOR ALPHA + ATTRIBUTE

CLEAR BUFFER

FILL THE REGEN BUFFER WITH BLANKS REP STOS.

ENABLE V IDEO AND CORRECT PORT SETT I NG

MOV

ADD

DX,OADDR &845

DX.4 -

I PREPARE TO OUTPUT TO V IDEO ENABLE PORT

; POINT TO THE MODE CONTROL REGISTER

VIDEO1

5-145

343 00F9 AO 0065 R

344 OOFC EE

345

346

,..

349 OOFD 2E: SA 84 0000 E

350 0 I 02 98

351 0103 A3 004A R

352

353

354

355 0 I 06 8 \ E6 OOOE

356 01 OA 2E~ 88 84 0000 E

357010FA3004CR

358 0112 B9 0008

359 0 I 15 BF 0050 R

360 0118 IE

361 0119 07

362 0 I I A 33 CO

363 0 I I C F3/ AB

364

365

366

367011E42

368 OIIF BO 30

369 0121 80 3E 0049 R 06

370 0126 75 02

371 0128 BO 3F

372 OIZA

373 OIZA EE

374 0128 A2 0066 R

315

316

311

378 012E

319 012E 50

380 012F 5F

381 0130 5E

382 0131 5B

383 0132

384 0132 59

385 0133 5A

386 0134 IF

381 0135 07

388 0136 CF

389 0137

390

391

392

393

39'

3'5

3'6

3"

398 0131

399 0131 B4 OA

400 0139 89 OE 0060 R

401 0130 E8 0142 R

402 0140 EB EC

403

.0 •

• 05

.06

407 0142

408 0142 88 16 0063 R

409 0146 8A C4

410 0148 EE

411 014942

412 014A E8 00

413 014C 8A C5

414 014E EE

415 014F 4A

416 0150 8A C4

411 0152 FE CO

418 0154 EE

419 015542

420 0156 EB 00

421 0158 8A CI

422 015A EE

423 0158 C3

424 DISC

'25

.26

.21

.28

42.

43D ."

432

433

434

435

436 0 I 5C

431 015C 8A C7

438 0 I 5E 98

439 :J I 5F 0 I EO

440 0161 96

441 0162 89 94 0050 R

442 0 I 66 38 3E 00&2 R

443 016A 15 05

444 016e 8B C2

445 016E E8 0173 R

446 DIll

441 0111 EB BB

448 0113

449

450

451

452 0 I 73

453 0173 E8 OIFl R

454 0 I 76 8B C8

455 0118 03 OE 004E R

456 0 I 7C 0 I F9

IBM Personal Computer MACRO Assembler

VIDEOI --06/10/85 VIDEO DISPLAY BIOS

Version 2.00 1-'

06-10-85

1-----

; - - -

1-----

MOV

OUT

AL ,IIICRT MODE SET

DX,AL -

; GET THE MODE SET VALUE

; SET V IDEO ENABLE PORT

DETERMINE NUMBER OF COLUMNS, BOTH FOR ENTIRE DISPLAY

AND THE NUMBER TO BE USED FOR TTY INTERFACE

MOV

C8W

MOV

AL,CS:[SI + OFFSET M6j

PCRT COLS,AX

GET NUMBER OF COLUMNS ON TH I S SCREEN

CLEAR HIGH BYTE

I NIT I AL I ZE NUMBER OF COLUMNS COUNT

SET CURSOR POSITIONS

ANO

MOV

MOV

MOV

MOV

PUSH

POP

XOR

REP

SI,OOOEH

AX,CS: [SI + OFFSET

PCRT LEN,AX

CX,8-

10151

01 ,OFFSET IltCURSOR POSN

OS -

ES

AX, AX

STOSW

SET UP OVERSCAN REGISTER

WORD OFFSET INTO CLEAR LENGTH TABLE

LENGTH TO CLEAR

SAVE LENGTH OF CRT -NOT USED FOR BW

CLEAR ALL CURSOR POSITIONS

EST ABL I SH SEGMENT

ADDRESS ING

FILL WITH ZEROES

MI41

INC

"OV

CMP

JNZ

"OV

OX

AL.30H

"'4

AL,3FH

SET OVERSCAN PORT TO A DEFAULT

30H VALUE FOR ALL MODES EXCEPT 640X200

SEE I F THE MODE IS 640X200 BW

I F NOT 640X200, THEN GO TO REGULAR

IF IT IS 640X200, THEN PUT IN 3FH

OUT

MOV aX,AL

OoCRT_PALETTE,AL

OUTPUT THE CORRECT VALUE TO 309 PORT

SAVE THE VALUE FOR FUTURE USE

NORMAL RETURN FROM ALL V [OED RETURNS

V IDEO RETURN:

POP

POP

POP

POP

BP

01

SI

BX

POP

POP

POP

POP

I RET

CX

OX

OS

ES RECOVER SEGMENTS

ALL DONE

SET_MODE

;

ENDP ----------------------

-------------------- -- - -----­

; SET CTYPE

;

INP~T

THIS ROUTINE SETS THE CURSOR VALUE

; (CX) HAS CURSOR VALUE CH-START LINE, CL-STOP LINE

I OUTPUT

;

;-

NONE

- - - - - - - - - ------ -----------------

- - - -

- -----------­

SET CTYPE

MOV

PROC

AH, 10

NEAR

; 6845 REGISTER FOR CURSOR SET

"OV

CALL

~CURSOR

M16 -

MODE,CX ; SAVE IN DATA AREA

; OUTPUT CX REG I STER

J"P V I OED _RETURN

TH IS ROUTI NE OUTPUTS THE CX REG I STER TO THE 6845 REG I STERS NAMED IN (AH)

MI Eo:

MOV

MOV

OUT

INC

JMP

"OV

OUT

OEC

MOV

INC

OUT

INC

JMP

MOV

OUT

RET

SET_CTYPE

DX,IIIADDR 6845

AL,AH -

OX,AL

OX

'.2

AL,CH

DX,AL

OX

AL,AH

AL

OX,AL

OX

'.2

AL,CL

DX.AL

ENDP

ADDRESS REG I STER

GET VALUE

REG [STER SET

DATA REGISTER

'10 DELAY

DATA

POINT TO OTHER DATA REGISTER

SET FOR SECOND REG I STER

I/O DELAY

SECOND DATA VALUE

ALL DONE

;

--------------------- -----------­

; SET CPOS

;

;

-

; INPUT

;

TH I S ROUT I NE SETS THE CURRENT CURSOR POS I T I ON TO THE

NEW X-Y VALUES PASSED

OX ROW, COLUMN OF NEW CURSOR

; BH 0 [SPLA Y PAGE OF CURSOR

; OUTPUT

; CURSOR IS SET AT 6845 IF DISPLAY PAGE IS CURRENT DISPLAY

1 - - - - - - - - - - - - - - - - - - --- - - - - - - - - - - - - - - - - - - - - - ­

SET CPOS

~ MOV

C8W

SAL

XCHG

MOV

PROC

AL,BH

AX,l

AX,SI

NEAR

; MOVE PAGE NUMBER TO WORK REGl STER

; CONVERT PAGE TO WORD VALUE

; WORD OFFSET

; USE INDEX REGISTER

CMP

JNZ

MOV

CALL

[S I +OFFSET ClCURSOR POSN]. OX

PACT I VE PAGE. BH

MI7

AX,OX

-

; SAVE THE PO INTER

SET CPOS RETURN

GET-ROW/COLUMN TO AX

"' B

CURSOR SET

SET_CPOS_RETURN

SET _CPOS

JMP V IDEO RETURN

ENDP ­

MI.

SET CURSOR POS[TION, AX HAS ROW/COLUMN FOR CURSOR

PROC

CALL

MOV

ADD

SAR

NEAR

POSITION

CX,AX

CX,ClCRT START

CX,I -

DETER~INE LOCATION IN REGEN BUFFER

ADD IN THE START ADDRESS FOR THIS PAGE o

I V I DE BY 2 FOR CHAR ONL Y COUNT

5-146 VIDEOl

18N Per'$onal COrllputer' MACRO Asserllbler'

VIDEOI - - 06/10/65 VIDEO DISPLAY 8105

Ver'""on 2.00

457 0 I 7E 84 OE

456 0180 E8 0142 R

459 0183 C3

460 0184

461

462

463

464

465

466

467

46B

469

470

471 0184

472 0184 8A OF

473 0186 32 FF

474 018801 E3

475 018A 88 97 0050 R

476 018E 88 OE 0060 R

477 0192 50

476 0193 5F

479 0194 5E

480 0 I 95 58

481 0196 58

482 0197 58

463 0198 IF

484 0199 07

485 019A CF

486 0198

487

48B

4B9

490

491

492

493

494

495

496 019B

497 019B A2 0062 R

496 019E 88 OE 004C

499 0lA2 98

500 0lA3 50

501 0lA4 F7 EI

502 0lA6 A3 004E R

503 0lA9 88 C8

R

504 OIAB 01 F9

505 0 I AD 84 OC

506 OlAF E8 0142 R

507 0182 5B

508 0 I B3 0 I E3

509 0lB5 8B 87 0050 R

510 0lB9 E8 0173 R

511 OIBC E9 012E R

512 018F

513

514

515

516

517

5'8

519

520

521

522

523

524

525

526

527

528

529 018F

530 018F 6B 16 0063 R

531 0 I C3 83 C2 05

532 0lC6 AO 0066 R

533 0 I C9 OA FF

534 0 I CB 75 OE

535

536

537

536 OICD 24 EO

539 OICF 80 E3 IF

540 0 I 02 OA C:3

541 0104

542 0104 EE

543 0105 A2 0066 R

544 0 I 06 E9 012E R

545

546

547

546 OIDB

549 0108 24 OF

550 0100 DO E8

551 OIDF 73 F3

552 0 I E I OC 20

553 0 I E3 E8 EF

554 0 I E5

555

556

557

558

559

560

561

562 0 I E5

563 0lE5 8A 26 004A R

564 0lE9 AO 0049 R

565 0' EC 8A 3E 0062 R

566 OIFO 50

567 OIFI 5F

566 0lF25E

569 0lF3 59

570 0lF4 E9 0132 R

1-5

06-10-6S

"OV

CALL

AH,I4

"Ib i REG I STER NUMBER FOR CURSOR

; OUTPUT THE VALUE TO THE 6845

"'8

RET

ENDP

- - - - - - - - - - - - - - - - - - ­

; READ CURSOR

THIS ROUTINE READS THE CURRENT CURSOR VALUE FROM THE

6845, FORMATS IT, AND SENDS IT 8ACK TO THE CALLER

;

INPUT

OUTPUT

BH PAGE OF CURSOR

~~~~

-

OX ROW, COLUMN OF THE CURRENT CURSOR POSITION

CX CURRENT CURSOR MODE

~~;;~;-----~;~~ -- - ~~~;------ -­

MOV

XOR

SAL

MOV

NOV

POP

POP

POP

POP

POP

POP

POP

POP

8L.BH

BH.BH

BX, I ; WORD OFFSET

OX, [BX+OFFSET CtCURSOR_POSN]

CX,OCURSOR MODE

BP ­

01

SI

BX

AX

AX

OS

ES

DISCARD SAVED CX AND OX

;

IRET

READ_CURSOR

;

ENDP --------

- ----- - -

-

- - - - ------------- ------------­

; ACT DISP PAGE

THIS ROUTINE SETS THE ACTIVE DISPLAY PAGE. ALLOWING

THE FULL USE OF THE MEMORY SET ASIDE FOR THE VIDEO ATTACHMENT

INPUT

OUTPUT

AL HAS THE NEW ACTIVE DISPLAY PAGE

I l~~

THE 6645 IS RESET TO DISPLAY THAT PAGE

-

~ ~ ~~

-

~~~~

---

~;~~

----

~~~;

---------------------­

MOV

MOV

CBW

PUSH

NUL

MOV

MOV

SAR

MOV

.ACTIVE PAGE,AL

CX ,IICRT=LEN

AX

CX

PCRT START,AX

CX,AX

CX,I

AH, 12

SAVE ACTIVE PAGE VALUE

GET SAVED LENGTH OF REGEN BUFFER

CONVERT AL TO WORD

SAVE PAGE VALUE

DISPLAY PAGE TIMES REGEN LENGTH

SAVE START ADDRESS FOR LATER

START ADDRESS TO CX

DIVIDE BY 2 FOR 6845 HANDLING

6845 REG I STER FOR START ADDRESS

CALL

POP

SAL

MOV

CALL

M16

BX

BX,I

RECOVER PAGE VALUE

, -2 FOR WORD OFFSET

AX,IBX + OFFSET PCURSOR_POSN]

10118

; GET CURSOR FOR THIS PAGE

; SET THE CURSOR POSITION

AC~

JMP

= ~ ~ :~=~~~~

V I DEO RETURN ___

~~~~

_

~

_________________ _

SET COLOR

TH I S ROUT I NE WILL ESTABLI SH THE BACKGROUNO COLOR, THE OVERSCAN COLOR.

AND THE FOREGROUND COLOR SET FOR MED I UM RESOLUT ION GRAPH I CS

INPUT

(BH) HAS COLOR 10

IF BH=O, THE BACKGROUND COLOR VALUE IS SET

FROM THE LOW BITS OF BL (0-31)

IF BH=I, THE PALETTE SELECTION IS MADE

OUTPUT

BASED ON THE LOW BIT OF 8L: o

= GREEN, RED, YELLOW FOR COLORS 1,2,:3

1 = BLUE, CY AN, MAGENTA FOR COLORS 1,2.3

(BU HAS THE COLOR VALUE TO 8E USED

;~;

THE COLOR SELECTION IS UPDATED

-

~~~~; - - - - - - ~;~~ - -

--

~~~~ - - - - - - - - -

--------

-­

MOV

ADD

MOV

OR

JNZ

DX,PADDR 6845

OX, 5 -

AL ,PCRT PALETTE

BH,BH -

M20

1/0 PORT FOR PALETTE

OVERSCAN PORT

GET THE CURRENT PALETTE VALUE

IS THIS COLOR 01

OUTPUT COLOR I

HANDLE COLOR 0 BY SETT I NG THE BACKGROUND COLOR

M19;

; - - - - -

AND

AN~

OR

OUT

"OV

""P

AL,OEOH

BL,OIFH

AL,8L

DX,AL

OCRT PALETTE, AL

V IDEO_RETURN

TURN OFF LOW 5 8 I TS OF CURRENT

TURN OFF HIGH 3 BITS OF INPUT VALUE

PUT VALUE INTO REGISTER

OUTPUT THE PALETTE

OUTPUT COLOR SELECT] ON TO 309 PORT

SAVE THE COLOR VALUE

HANDLE COLOR I BY SELECTING THE PALETTE TO BE USED

10120:

ANO

'HR

"NC

OR

""P

SET_COLOR

AL,ODFH

8L, I

"'9

AL,20H

MI'

ENDP

TURN OFF PALETTE SELECT BIT

TEST THE LOW ORDER BIT OF BL

ALREADY DONE

TURN ON PALETTE SELECT BIT

GO DO IT

, VIDEO STATE

; RETURNS THE CURRENT VIDEO STATE IN AX

; AH '" NUMBER OF COLUMNS ON THE SCREEN

; AL = CURRENT V IDEO MOOE

; BH = CURRENT ACT I VE PAGE

~ ~~~~- ~~~~~-----~;~~----~~~;------- - -- - - - - - - - - --­

MOV

MOV

MOV

POP

POP

POP

POP

JMP

AH,BYTE PTR tlCRT COLS

AL ,PCRT MODE -

BH, OACTIVE PAGE

BP -

01

SI

CX

M I 5

GET NUMBER OF COLUMNS

CURRENT MODE

GET CURRENT ACT I VE PAGE

RECOVER REGISTERS

DISCARD SAVED BX

RETURN TO CALLER

VIDEO1 5-147

IBM Person. I COlllpl,lter MACRO Assembler

VIDEOI --06/10/85 VIDEO DISPLAY 810S

Version 2.00

571 01 F7

572

573

57.

575

570

577

57.

57.

5.0

581 0lF7

582 0lF7 53

583 0 I F8 88 08

584 OIFA 8A C4

565 0 I FC F6 26 004A R

566 0200 32 FF

5B 7 0202 03 C3

5BB 0204 0 I EO

589 0206 58

590 0207 C3

591 0206

5.2

5.3

5 ••

5.5

5.0

5.7

5 ••

599

000

00 I

002

003

00.

005

000

007

608 0208

009

610 0206 E8 02E4 R

611 0208 80 FC 04

612 020E 72 08

613 0210 80 Fe 07

614 0213 74 03

615 0215 E9 04A3 R

616 0218

617 0218 53

618 0219 8B CI

619 021B EB 0255 R

620 021E 14 31

621 0220 03 FO

622 0222 8A E6

623 0224 2A E3

624 0226 ,

625 0226 E8 0291 R

626 0229 03 F5

627 0228 03 FD

&28 0220 FE ee

&29 022F 75 F5

630 0231

631 0231 5B

632 0232 80 20

633 0234

634 0234 EB 02AO R

635 0237 03 FD

63& 0239 FE CB

&37 0238 15 F1

636 0230

639 0230 E8 0000 E

&40 0240 80 3E 0049 R 07

641 0245 74 01

&42 0241 AO 0065 R

&43 024A BA 0308

644 0240 EE

645 024E

646 024E E9 01 2E R

647 0251

648 0251 8A DE

&49 0253 EB DC

650 0255

051

052

053

654 0255

&55 0255 E8 0 I F1 R

&56 0258 03 06 004E R

657 025C 8B F8

058 025E 8B FO

&59 0260 2B 01

&&0 0262 FE C6

661 0264 FE C2

662 0266 32 ED

663 026B 86 2E 004A R

664 026C 03 ED

065 02&E 8A C3

666 0270 F6 26 004A R

667 0274 03 CO

668 0276 50

669 0277 AO 0049 R

670 027A 06

671 0278 IF

672 027C 3C 02

&73 027E 12 13

674 0280 3C 03

&75 0282 11 OF

070

&77 0284 52

678 0285 BA 03DA

079 0288

680 0288 EC

6BI 0289 A8 08

682 0288 74 FB

683 028D 80 25

664 02BF 82 D8

1-0

Ob-10-85

VIDEO_STATE ENDP .

---- -- --------- -- -

---

-------------- - --­

; POSITION

;

;

; INPUT

THI S SERVICE ROUTINE CALCULATES THE REGEN BUFFER ADDRESS

OF A CHARACTER IN THE ALPHA MODE

;

I OUTPUT

AX = ROW, COLUMN POSITION

; AX .. OFFSET OF CHAR POSITION IN RECiEN BUFFER

~~~~;~~~--------;~~~-

-

-~~~~-

----------­

PUSH

MOV

MOV

MUL

XOR

ADD

SAL

POP

RET

POSITION

;

---­

SCROLL UP

BX

BX,AX

AL. AH

BYTE PTR .CRT COLS

BH.BH

AX,BX

AX,l

BX

ENDP

; SAVE REG I STER

ROWS TO AL

DETERMINE BYTES TO ROW

ADD IN COLUMN VALUE

• 2 FOR ATTRIBUTE BYTES

;

;

THIS ROUTINE MOVES A BLOCK OF CHARACTERS UP

ON THE SCREEN

; INPUT

; (AHI = CURRENT CRT MODE

;

;

IAL) .. NUMBER OF ROWS TO SCROLL

ICX) .. ROW/COLUMN OF UP!;'ER LEFT CORNER lOX) " ROW/COLUMN OF LOWER RIGHT CORNER ;

;

;

IBH) :: ATTRIBUTE TO BE USED ON BLANKED LINE

!OS) :: OAT A SEGMENT

;

; OUTPUT

(ESI :: REGEN BUFFER SEGMENT

; NONE - THE REGEN BUFFER I S MOD I F I ED

ASSUME OS: DATA. ES: DATA

SCROLL~UP PROC NEAR

CALL

CMP

OC

CMP oE oMP

Nl :

PUSH

MOV

CALL

JZ

ADD

MOV

SUB

N2:

CALL

ADD

ADD

DEC

JNZ

N3:

POP

MDV til4:

CALL

ADD

DEC

JNZ

N5:

CALL eMP

JE

MOV

MOV

OU7

N6:

JMP

N7:

MOV

JMP

SCROLL_UP

TEST_LINE_COUNT

AH,4

NI

AH,l

NI

GRAPHICS_UP

BX

AX,CX

SCROLL_pas IT ION

N7

SI,AX

AH,DH

AH,BL

NIO

SI,BP

DI,BP

AH

N2

AX

AL, •

Nil

DI.BP

BL

N.

ODS

.CRT _MODE. 7

NO

AL.IlICRT_MOOE SE7

DX.03D6H

DX,AL v IDEO_RETURN

BL,OH

N3

ENDP

HANDLE COMMON SCROLL SET UP HERE

TEST FOR GRAPHICS MODE

HANDLE SEPARATELY

TES T FOR BW CARD

UP CONT I NUE

SAVE F,ILL ATTRIBUTE IN BH

UPPER LEFT pas

I T I ON

DO SETUP FOR SCROLL

BLANK FIELD

FROM ADDRESS

, ROWS I N BLOCK

, ROWS TO BE MOVED

ROW LOOP

MOVE ONE ROW

POINT TO NEXT LINE IN BLOCK

COUNT OF LI NES TO MOVE

ROW LOOP

CLEAR ENTRY

RECOVER ATTR I BUTE IN AH

FILL WITH BLANKS

CLEAR LOOP

CLEAR-THE ROW

POINT TO NEXT LINE

COUNTER OF LI NES TO SCROLL

CLEAR LOOP

SCROLL_END

IS THIS THE BLACK AND WHITE CARD

IF SO. S-KIP THE MODE RESET

GET THE VALUE OF THE MODE SET

ALWAYS SET COLOR CARD PORT

V IDEO_RET _HERE

BLANK FI ELD

GET ROW COUNT

GO CLEAR THAT AREA

SCROLL POSITION PRDC

CALL

ADD

MOV OI,AX-

NEAR

POSITION

AX,tlCRT START

NOV

SUB

INC

INC

XDR

MOV

ADD

MOV

MUL

ADD

51 ,AX

DX,CX

OH

DL

CH,CH

BP,0CRT COLS

BP,BP-

AL,BL

BYTE PTR tlCRT COLS

AX ,AX -

PUSH

MOV

PUSH

POP

CNP

.JB

CNP

JA

AX

AL,tlCRT MODE

ES -

OS

AL.2

N9

AL.3

N9

PUSH

MOV ox

DX.3DAH

NB:

IN

TEST

OZ

MOV

MOV

AL.DX

AL, RVRT

NO

AL .25H

DL.ODBH

CONVERT TO REGEN PO INTER

OFFSET OF ACT I VE PAGE

TO ADDRESS FOR SCROLL

FROM ADDRESS FOR SCROLL

OX

=

'ROWS. 'COLS I N BLOCK

INCREMENT FOR 0 ORIGIN

SET HIGH BYTE OF COUNT TO ZERO

GET NUMBER OF COLUMNS IN D I SPLA Y

TIMES 2 FOR ATTRIBUTE BYTE

GET LINE COUNT

DETERMINE OFFSET TO FROM ADDRESS

-2 FOR ATTRIBUTE BYTE

SAVE LINE COUNT

GET CURRENT MODE

ESTABLISH ADDRESSING TO REGEN BUFFER

FOR 80TH PO INTERS

TEST FOR COLOR CARD SPEC I AL CASES HERE

HAVE TO HANDLE eoX25 SEPARATELY

I 80X25 COLOR CARD SCROLL

GUARANTEED TO BE COLOR CARD HERE

WAIT DISP ENABLE

GET PORT ­

WAIT FOR VERTICAL RETRACE

WA 1 T _0 I SP_ENABLE

ADDRESS CONTROL PORT

5-148

VIDEO1

• -1

Ob-10-85

IBM PeraQ,...1 Computer MACRO Assembler

VIDEOI - - 06/10/85 VIDEO DISPLAY BIOS

Veraion 2.00

685 0291 EE

686 0292 5A

687 0293

688 0293 58

689 0294 OA DB

690 0296 C3

691 0297

.92

.93

694 0297

695 0297 8A CA

696 0299 56

697 029A 57

698 029B F3/

699 0290 5F

700 029E 5E

701 029F C3

702 02AO

103

10.

705 02AO

706 02AO 8A CA

707 02A2 57

708 02A3 F3/ AB

709 02A5 5F

710 02A6 C3

711 02A7

112

113

11.

115

11.

111

118

119

120

121

122

123

12'

125

12.

121

728 02A 7

729 02A 7 Fo

730 02A8 E8 02E4 R

731 02AB 80 Fe 04

732 02AE 72 08

733 02BO 80 FC 07

734 02B3 74 03

735 0285 E9 04FA R

736 0288

737 02B8 53

138 0289 8B C2

739 02BB E8 0255 R

140 028E 74 20

141 02CO 2B FO

742 02C2 8A E6

743 02C4 2A E3

744 02C6

745 02C6 E8 0297 R

746 02C9 28 F5

747 02C8 2B FD

748 02CO FE CC

749 02CF 75 F5

750 0201

751 0201 58

752 0202 80 20

753 0204

R 754 0204 E8 02AO

155 0207 28 FD

756 0209 FE C8

757 0208 75 Fl

758 0200 E9 0230 R

759 02EO

,

..

760 02EO 8A DE

761 02E2 E8 EO

,.3

02E4

,

,.5

..

,.8 02E4

769 02E4 8A 08

770 02Eb OA CO

771 02E8 74 OE

772 02EA 50

773 02E8 8A C6

114 02EO 2.60 C5

115 02EF FE CO

116 02F I 3A C3

777 02F3 58

778 02F4 75 02

779 02F6 2A DB

780 02F8

781 02F8 C3

782 02F9

OU1

POP

OX,AL

OX

N9:

POP

OR

RE1

AX

BL,BL

SCROLL_POS I T I ON ENDP

1-----

MOVE ROW

N I 0 PROCNEAR

NIO

MOV

PUSH

PUSH

REP

POP

POP

RE1

ENOP

CL,DL

S I

0 I

MOVS.

01

SI

; - - - - - CLEAR ROW

Nil PROC NEAR

Nil

MOV

PUSH

REP

POP

RET

ENoP

CL.oL

01

STOSW

01

TURN OFF Y IDEO OUR I NG VERT I CAL RETRACE

RESTORE LINE COUNT o

SCROLL MEANS BLANK FIELD

RETURN II I TH FLAGS SET

GET /I OF COLS TO MOVE

SAVE START ADDRESS

MOVE THAT LINE ON SCREEN

RECOVER ADDRESSES

I GET /I COLUMNS TO CLEAR

STORE THE FILL CHARACTER

SCROLL DOWN

THIS ROUTINE MOVES THE CHARACTERS WITHIN A DEFINED

BLOCK OOWN ON THE SCREEN , FILLING THE TOP LINES

¥II I TH A DEF I NED CHARACTER

INPUT

(AH)

(All

(CX)

(OX)

(8H)

OUTPUT

(OS)

(ES)

=

CURRENT CRT MODE

=

NUM8ER OF LINES TO SCROLL

=

UPPER LEFT CORNER OF REGION

= LOWER RIGHT CORNER OF REG I ON

=

FILL CHARACTER

=

DATA SEGMENT

= REGEN SEGMENT

~~~~~~

NONE - - SCREEN I S SCROLLED

-

~~;~ - - - - ~~;; - - - ~~~~ - - - - - -

-

- -

---­

STo

CALL

CMP

JC eMP

JE

JMP

TEST LINE COUNT

AH,4-

N( 2

AH,7

N!2

GRAPH I CS_DOWN

I DIRECTION FOR SCROLL DOWN

I

I TEST FOR GRAPHICS

TEST FOR BW CARD

N12:

PUSH

NOV

CALL

"Z

SUB

NOV

SUB

BX

AX,OX

SCROLL_POS I TlON

NI.

SI,AX

AH,oH

AH,BL

CONT I NUE DOWN

SAVE ATTR I BUTE IN BH

LOWER RIGHT CORNER

GET REGEN LOCA T [ON

S I I S FROM ADDRESS

GET TOTAL , ROWS

COUNT TO MOVE 1 N SCROLL

N 13:

NIO

SI,8P

OI,8P

AH

NI3

MOVE ONE ROW CALL

SUB

SUB

OEe

"NZ

N14:

POP

NOV

AX

AL, '

I RECOVER A TTR 18UTE IN AH

N15:

CALL

SUB

OEe

"NZ

""P

Nil

DI,BP

BL

NI5

N5

CLEAR ONE ROW

GO TO NEXT ROW

Nib:

NOV

-

""P

SCROLL DOWN

; - - - - -

; - - - - -

8L , OH

NI'

ENDP

IF AMOUNT OF LINES TO BE SCROLLED", AMOUNT OF LINES IN WINDOW

THEN ADJUST AL; ELSE RETURN,

TEST_LINE_COUNT PROC

NOV

OR

"Z

PUSH

NOV

SUB

.Ne e"p

POP

"NE

SUB

BL,AL

AL,AL

BL SET

AX­

AL,DH

AL,CH

AL

AL , 8L

AX

BL SET

8L-;-BL

RET

TEST_LiNE_COUNT ENDP

NEAR

SAVE LINE COUNT IN BL

TEST IF AL I S ALREADY ZERO

IF IT IS THEN RETURN •••

SAVE AX

SUBTRACT LOWER ROW FROM UPPER ROW

ADJUST DIFFERENCE BY I

LINE COUNT", AMOUNT OF ROWS IN WINDOW?

RESTORE AX

I F NOT THEN WE' RE ALL SET

OTHERWISE SET 8L TO ZERO

RETURN

VIDEO 1 5-149

7.3

7••

7.S

7 ••

787

788

789

790

791

79.

793

79.

79S

79.

797

79.

799 02F9

800 02F9 80 FC 04 eo

1 02FC 72 08

80'

803 02FE 80 FC 07

804 0301 14 03

80S

806 0303 E9 062A R

801 0306

13013 0306 E8 0322 R

1309 0309 8B F7

810 0308 06

81 I 030C 1F

812

8 "

814

815 0300 OA DB

816 030F 75 00

811 031!

818 0311

Fa

819 031290

820 0313 FA

821 0314 EC

822 0315 A8 01

623 0311 75 F8

824 0319

825 0319 EC

826 031A A6 09

821 031C 74 F8

828 031E

829 031E AD

630 031 F E9 012E R

831

632 0322

833

834

835 0322

636 0322 86 E3

831 0324 88 E8

838 0326 80 E8 02

839 0329 DO E8

840 0328 68 F3

841 0320 8A OF

842 032F 32 FF

843 0331 68 FB

844 0333 01 E7

845

.,

.

0335 8B 85 0050 R

0339 14 09

848 0338 33 FF

849 0330

850 0330 03 3E 004C R

851 034! 4B

852 0342 75 F9

853 0344

854 0344 E8 0lF7 R

855 0347 03 F8

856 0349 88 16 0063 R

8.0

..

851 0340 83 C2 06

858 0350 8B DE

859 0352 C3

,

862 0353

IBM Pe ... sonal Comput.er MACRO Assemble...

VIDEOI _.06/10/85 VIDEO DISPLAY BIOS

VerSion 2.00 1-8

06-10·85

PAGE

1--- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - . - - - ••• - - - - - - - - - - - - - - - - - - - - ­

READ AC CURRENT

THIS ROUTINE READS THE ATTRIBUTE AND CHARACTER AT THE CURRENT

CURSOR POS I T I ON AND RETURNS THEM TO THE CALLER

INPUT

: -

{AH)

IBHl

=

CURRENT CRT MODE

=

01 SPLAY PAGE ( ALPHA MODES ONLY )

1051 : DATA SEGMENT

I ES)

=

REGEN SEGMENT

OUTPUT

{AL I =

CHARACTER READ

IAHI = ATTRIBUTE READ ----

-

------

-

--

-

------

- - - - ---- - - -

ASSUME OS;oATA,ES:DATA

--

-

-

---- - -

-------_.--­

READ AC CURRENT PROC

-CMP AH,4

JC PIO

PIO;

NEAR

, IS THIS GRAPHICS

C"P

JE

AH.7

PIO

I [S THIS BW CARD

J"P

CALL

"OV

PUSH

POP

GRAPHICS_READ

FIND POSITION

51

,aT

ES as

READ AC CaNT I NUE

GET REGEN LOCATION AND PORT ADDRESS

ESTABLISH ADDRESSING IN 51

GET REGEN SEGMENT FOR QU I CK ACCESS

IAIT FOR HOR[ZONTAL RETRACE DR VERTICAL RETRACE IF COLOR 80

OR

JNZ

Bl,BL

PI3

PII:

STI

Nap eLI

IN

TEST

JNZ

AL,DX

AL ,RHRZ

PI1

P12;

IN

TEST

JZ

AL,DX

AL, RVRT+RHRZ

PI2

P13:

LODSW

.JMP V IDEO_RETURN

REAO_AC_CURRENT ENOP

CHECK MODE FLAG FOR COLOR CARD IN 80

ELSE SKIP RETRACE WAIT 00 FAST READ

WAI T FOR HORZ RETRACE lOW OR VERTI CAL

ENABLE INTERRUPTS FIRST

ALLOW FOR SMAll INTERRUPT WINDOW

BLOCK I NTERRUPTS FOR SINGLE LOOP

GET STATUS FROM THE ADAPTER

IS HOR I ZONT AL RETRACE LOW

WAIT UNTIL IT IS

NOW WAIT FOR EITHER RETRACE HIGH

GET STATUS

IS HOR (ZONTAL OR VERTICAL RETRACE HIGH

WAIT UNTIL EITHER IS ACTIVE

GET THE CHARACTER AND ATTR I BUTE

EXIT WITH (AXI

FINO POS I TlON

XCHG

MOV

SUB

SHR

"OV

"OV

XOR

"OV

SAL

MOV

JZ

P20:

P21:

XOR

AOO

OEC

JNZ

CALL

ADO

MOV

ADD

MOV

RET

PROC

AH.8L

BP,AX

BL.2

BL, I

SI.BX

BL.BH

BH.BH

01 • ax

NEAR SETUP FOR BUFFER READ OR WR I TE

SWAP MODE TYPE WITH ATTRIBUTE

SAVE CHARACTER/ATTR IN 18P) REGISTER

CONVERT 0 I SPLA Y MODE TYPE TO A

ZERO VALUE FOR COLOR IN eo

COLUMN

AND SAVE 12 OR 3 --> ZERO)

MOVE DISPLAY PAGE TO LOW BYTE

CLEAR HIGH BYTE OF COUNT/BYTE OFFSET

MOVE 0 I SPLA Y PAGE I COUNT) TO WORK REG

01,1 ; TIMES 2 FOR WORD OFFSET

~~;[DI+OFFSET PCURSOR_PO~N~KIP a~F~~~ ~~~~~~~~~~ ~~ ~~~~ ~~~~

01,01

DI,PCRT LEN

8X -

P20

POSITION

OI.AX

OX, 'ltADDR 6845

DX,6 -

BX,SI

ELSE SET BUFFER START ADDRESS TO ZERO

ADD lENGTH OF BUFFER FOR ONE PAGE

DECREMENT PAGE COUNT

LOOP TILL PAGE COUNT EXHAUSTED

DETERMINE LOCATION IN REGEN IN PAGE

ADO LOCATION TO START OF REGEN PAGE

GET 8A.SE ADDRESS OF ACTIVE DISPLAY

POINT AT STATUS PORT

RECOVER CONVERTED MODE TYPE IN (BLl

BP= ATTR IBUTE/CHARACTER (FROM BLI AU

01= POSITION (OFFSET IN REGEN BUFFER)

OX= STATUS PORT ADDRESS OF ADAPTER

8L= MODE FLAG {ZERO FOR 80X25 COLOR)

5-150 VIDEO 1

915 031F AB

916 0380 E2 EA

917 0362 o

12E R 916 0382 E9

919

920 0385

921

922

923

92.

925

926

927

926

929

930

931

932

933

93'

935

936

937 0365

936 0365 80 FC 04

939 0366 72 08

9'0 038A 80 FC 07

941 0380 74 03

942 038F E9 0582 R

9.3 0392

944 0392 E8 0322 R

945

9.6

9.7

946

949 0395

950 0395 FB

951 0396 OA DB

952 0398 75 OF

953 039A FA

954 039B EC

955 039C A8 06

956 039E 75 09

957 03AO A8 01

956 03A2 75 F1

959 03A4

960 03A4 EC

96' 03A5 A8 09

962 03A7 74 FB

963 03A9

964 03A9 88 C5

965 03AB AA

966 03AC 47

66'

66.

665

666

667

666

669

670

671

672

673

67.

675

676

677

676

679

660 0353

661 0353 80 FC 04

662 0356 72 08

66' 0358 80 FC 07

664 035B 74 03

665 0350 E9 0582 R

666 0360

607 0360 E8 0322 R

666

669 0363 OA OB

690 0365 74 06

691

692 0361 95

69' 0368 F3/ AB

69. 036A EB 16

695

696

697

696 036C

699 036C 95

900 0360

901 0360 FB

902 036E 90

903 036F FA

90. 0310 EC

905 0311 A8 08

906 0373 15 09

907 0375 A8 01

906 0377 75 F4

909 0379

910 0379 EC

911 037A A8 09

912 031C 14 F8

913 037E

91. 031E 95

967 03AD E2 E6

966

969 03AF E9 o

12E R

970

971 03B2

IBM Personlll Comp'-Itel" NACRO Aaae",bler

VIDEO! - - 06/10/85 VIDEO DISPLAY BIOS

Veraion 2.00 1-9

06-10-65

I

PAGE 1-----------------------------------------------------------------------------­

I WR I TE AC CURRENT

-THIS ROUTINE WRITES THE ATTRIBUTE AND CHARACTER

I

I INPUT

;

AT THE CURRENT CURSOR POSITION

(AH)

(8HI

=

CURRENT CRT MODE

=

DISPI..AY PAGE

(CX) = COUNT OF CHARACTERS TO WR I TE

(AI..) = CHAR TO WR ITE

(BL) = ATTR 18UTE OF CHAR TO WR I TE

(OS) = OAT A SEGt.4ENT

OUTPUT

(ES) = REGEN SEGMENT

;

-

DISPI..AY REGEN BUFFER UPDATED -

- - -

---

-

-----

-

------

-

-------

-

---

- - - - - - - - - - - - - - - - - - - - - - - - - - -

-

- - - - - -

----

- -

-

- - -­

WR I TE AC CURRENT

CMP

AH,4

JC

Ct.4P

JE

Jt.4P

PROC

P30

AH,7

P30

GRAPHICS_WRITE

P30 :

CALL FIND_POSITION

NEAR

OR

JZ

BL,BL

P32

IS THIS GRAPHICS

IS THIS BW CARD

WR I TE AC CONT I NUE

GET REGEN-1..0CAT I ON AND PORT ADDRESS

ADDRESS IN (D I) REG I STER

CHECK MODE FLAG FOR COLOR CARD AT 80

SKIP TO RETRACE WAIT IF COLOR AT 80

; - - - - -

P3 I I

P321

P331

P34:

P35:

XCHG

STI

NOP

CL'

IN

TEST

JNZ

TEST

JNZ

IN

TEST

JZ

XCHG

STOSW

LOOP

XCHG

REP

JMP

AX,SP

STOSW

SHORT P35

GET THE ATTR/CHAR SAVED FOR FAST WRITE

STRING WRITE TI-£ ATTRI8UTE & CHARACTER

EXIT FAST WRITE ROUTINE

WAIT FOR HORIZONTAl.. RETRACE OR VERTICAl.. RETRACE IF COI..OR 80

BP,AX

AL.OX

AL.RVRT

P3'

AL.RHRZ

P32

AL,OX

AI.., RVRT+RHRZ

P33

AX,BP

P31

1..00P FOR EACH ATTR I CHAR WR I TE

PI..ACE AHR/CHAR BACK IN SAVE REGISTER

WA I T FOR HORZ RETRACE 1..0W OR VERT I CAl..

ENABI..E INTERRLPTS FIRST

ALLOW FOR INTERRUPT WINDOW

BLOCK I NTERRUPTS FOR SINGLE LOOP

GET STATUS FROM THE ADAPTER

CHECK FOR VERT I CAL RETRACE FIRST

DO FAST WRITE NOW IF VERTICAL RETRACE

IS HOR I ZONTAL RETRACE LOW THEN

WAIT UNTIL IT IS

WAIT FOR EITI-£R RETRACE HIGH

GET STATUS AGAIN

I S HOR I ZONT AI.. OR VERT I CAL RETRACE HIGH

WAIT UNTIL EITHER IS ACTIVE

GET THE ATTR/CHAR SAVED IN (BPI

WRITE THE ATTRIBUTE AND CHARACTER

AS t.4ANY T I t.4ES AS REQUESTED TILL CX=O

EX IT

I - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ­

; WR I TE C CURRENT

-THIS ROUTINE WRITES THE CHARACTER AT

THE CURRENT CURSOR POS I T I ON, ATTR IBUTE UNCHANGED

INPUT

(AH)

=

CURRENT CRT MODE

(BH) = DISPLAY PAGE

(CX) = COUNT OF CHARACTERS TO WR I TE

(AI..) = CHAR TO WRITE

(OS) = DATA SEGMENT

(ES) = REGEN SEGt.4ENT

OUTPUT

;

;

D I SPI..AY REGEN BUFFER UPDATED ------

- - - - - - - - - - - - - - - -

---

-

-

--- - - -

--

--

------------

-

---

-

-------

- -

--

- - - - - - - - - - - - -­

I

WR I TE C CURRENT PROC

-CMP AH,4

JC

Ct.4P

JE

.Jt.4P

NEAR

P40

AH,7

P40

GRAPHICS_WRITE

P40:

CALL

I IS THIS GRAPHICS

I IS THIS BW CARD

GET REGEN LOCATION AND PORT ADDRESS

ADDRESS OF LOCATION IN lOll

;

-----

WAIT FOR HORIZONTAL RETRACE OR VERTICAL RETRACE IF COLOR 80

P41,

P42:

S71

OR

JNZ

CLI

IN

TEST

JNZ

TEST

JNZ

IN

TEST

JZ

8L.BL

P43

AL,DX

AL,RVRT

P43

AL,RHRZ

P41

AL,DX

AL,RVRT+RHRZ

P42

WA I T FOR HORZ RETRACE LOW OR VERT I CAL

ENABLE INTERRUPTS FIRST

CHECK NODE FLAG FOR COLOR CARD IN 80

ELSE SKIP RETRACE WAIT 00 FAST WRITE

BLOCK INTERRUPTS FOR SINGLE LOOP

GET STATUS FROt.4 THE ADAPTER

CHECK FOR VERT I CAL RETRACE FIRST

00 FAST WRITE NOW IF VERTICAL RETRACE

IS HOR I ZONT AI.. RETRACE LOW THEN

WAIT UNTIl.. IT IS

WAIT FOR EITHER RETRACE HIGH

GET STATUS AGAIN

IS HORIZONTAL OR VERTICAL RETRACE HIGH

WAIT UNTIL EITHER RETRACE ACTIVE

P43:

MOV

STOS8

INC

LOOP

AX,8P

01

P.,

JMP V IDEO_RETURN

WRITE_C_CURRENT ENDP

GET THE CHARACTER SAVE IN (BPI

PUT THE CHARACTER I NTO REGEN BUFFER

BUt.4P PO!NTER PAST ATTRIBUTE

AS MANY T!t.4ES AS REQUESTED

VIDEO1 5-151

[8M Pl!r50na[ Co",pute .... MACRO A •• e",ble....

VIOEOI - - - 06/10/65 VIDEO DISPLAY BIDS

V • ..-",on 2.00

912

913

974

915

91.

911

918

919

980

981

982

983

984

985

98.

967 03B2

966 0382 3C 04

969 0384 73 7C

990 0386 E3 7 A

991

992 0386 68 F3

993 038A CI EE 08

994 0380 01 E6

995 038F FF 84 0050 R

996 03C3 50

997 03C4 86 0200

996 03C7 CO 10

999 03C9 56

1000 03CA

1001 03CA 51

1002 03C8 53

1003 03CC 50

1004 03CO 86 EO

1005 03CF 26: 8A 46 00

1006 0303 45

1007

[ 006

1009

10 I 0 0304 3C 06

101 I 0306 74 OC

1012 0308 3C 00

1013 030A 74 06

1014 030C 3C OA

1015 030E 74 04

1016 03EO 3C 07

1017 03E2 75 00

1016 03E4

1019 03E4 B4 OE

1020 03E6 CO 10

1021 03E6 68 94 0050 t 022 03EC 56

R

1023 03EO 5B

1024 03EE 59

1025 03EF E8 2E

102603FI

1027 03FI 89 0001

1026 03F4 60 FC 02

1029 03F7 72 05

1030 03F9 26: 8A 5E

[03! 03FO 45

1032 03FE

1033 03FE 84 09

1034 0400 CO 10

1035 0402 58

1036 0403 5B

1037, 0404 59

1038 0405 FE C2

10390407 3A 16 004A R

1040 040B 72 12

1041 0400 FE C6

1042 040F 2A 02

10430411 60 FE 19

1044 0414 72 09

1045

10460416 50 r 047 0417 B8 OEOA

1048 04 r

A CO 10

1049 041C FE CE

1050 041E 58

1051 041F

1052 041F 50

1053 0420 88 0200

1054 0423 CD to

1055 0425 58

[056 0426 E2 A2

1057 t 058 0428 SA t 059 0429 A8 0 I r 060 0428 75 05

[061 0420 88 0200

1062 0430 CD [0

1063 0432

1064 0432 E9 0' 2E R

[065

1066 0435

[-10

06-10-65

PUSH

MOV

INT

OEe

POP

PUSH

MOV

INT

POP

LOOP

POP

TEST

JNZ

MOV

INT

"OV

IN1

POP

POP

POP

INC

C"P

J8

INC

SU8 eMP

J8 eMP

JE eMP

JE eMP

JE eMP

JNE

MOV

IN1

MOV

POP

POP

POP

J"P

"DV

C"P

J8

MOV

INC

PAGE

;

--- ---------

-------- - - - -------------

I WRITE STRING

--

-

------------ ----- -

- - -------

---­

INPUT

-THIS ROUTINE WRITES A STRING OF CHARACTERS TO THE CRT.

~ALI

IBH)

(CX)

IOXI

(BLI

IESI

1 SP 1

=

WRITE STRING COMMAND 0 3

= DISPLAY PAGE

=

COUNT OF CHARACTERS TO WR I TE, J F (CX)

=

0

=

CURSOR POSITION FOR START OF STRING WRITE

THEN RETURN

=

ATTRIBUTE OF CHARACTER TO WRITE IF ~ALI

= SOURCE STRING SEGMENT

=

SOURCE STR I NG OFFSET

=

0 OR (AL)

OUTPUT

NONE

~~ ~ ~~-~~~ ~ ~~ ----;;~~----~~~;

---

--­

CMP

JNB

JCXZ

AL,04

P59

P59

TEST FOR INVALID WRITE STRING OPTION

I F OPT I ON I NV AL [0 THEN RETURN

IF ZERO LENGTH STRING THEN RETURN

P5Q:

"OV

SHR

SAL

PUSH

PUSH

"OV

INT

POP

FUSH

PUSH

PUSH

XCHG

MOV

INC

SI,BX

AX ,OZOOH

IOH

GET CURRENT CURSOR PAGE

SI,8

SI, I

CLEAR H[GH BYTE

• CONVERT TO PAGE OFFSET 1 S I

=

PAGE I

(S I +OFFSET OCURSOR POSN) j SAVE CURRENT CURSOR POS I T I ON IN STACK

AX j SAVE wRITE STRING OPTION

SET NEW CURSOR pas I T I ON

AX RESTORE WRITE STRING OPTION

CX

8X

AX

AH,AL

AL,ES: [BP]

8P

TEST FOR SPEC I AL CHARACTER'S

PUT THE WRITE STRING OPTION INTO IAH)

GET CHARACTER FROM INPUT STRING

BUMP PO I NTER TO CHARACTER

PSI!

P52:

P53:

PS4:

P59:

WR ITE STR I NG

AL,08H

PSI

AL,CR

PSI

AL,LF

PSI

AL,07H

P52

[S IT A BACKSPACE

BACK SPACE

IS ['f CARR I AGE RETURN

CAR RET

IS TT A LINE FEED

LINE FEED

IS IT A BELL

I F NOT THEN DO WR I TE CHARACTER

AH,OEH

10H

TTY CHARACTER WR I TE

; -WR I TE TTY CHARACTER TO THE CRT

~~,[SI+OFFSET

PCURSOR_POSN) ; g~~Tg~~R~~61;~~~~R

POSITION

8X ex

SHORT P54 GO SET CURSOR POS I T

1

ON AND CONT I NUE

CX,'

AH.2

P53

BL,ES; [BP]

8P

AH , 09H

10H

AX

8X ex

DC

DL,BYTE PTR IIICRT COLS

P54 -

DH

DL,DL

DH,25

P54

SET CHARACTER WR I TE AMOUNT TO ONE

IS THE ATTRIBUTE IN THE STRING

IF NOT THEN SKIP

ELSE GET NEW ATTR IBUTE

BUMP S TR I NG PO INTER

GOT CHARACTER

WR I TE CHARACTER TO THE CRT

RESTORE REG ISTERS

I NCREMENT COLUMN COUNTER

IF COLS ARE "I TH I N RANGE FOR TH I S MODE

THEN GO TO COLUMNS SET

8UMP ROW COUNTER BY ONE

SET COLUMN COUNTER TO ZERO

I F ROWS ARE LESS THAN 25 THEN

GO TO ROWS_COLUMNS_SET

AX

AX

I

IOH

DH

AX

OEOAH

AX

AX

I

0200H

IOH

AX

PSO

OX

AL,OIH

P'i9

AX,0200H

10H

ELSE SCROLL SCREEN

DO SCROLL ONE LINE

RESET ROW COUNTER TO 24

RESTORE REG J STERS

ROW COLUMNS SET

SAVE-WR I TE S'fR I NG OPT I ON

SET NEW CURSOR POS I T I ON COMMAND

ESTABLISH NEW CURSOR POSITION

DO IT ONCE MORE UNTIL (CX)

=

ZERO

RESTORE OL.D CURSOR COORD I NATES

J F CURSOR WAS NOT TO 8E MOVED THEN

THEN EXIT WITHOUT RESETTING OLD VALUE

ELSE RESTORE OLD CURSOR POSITION

DONE EXIT WRITE STRING

RETURN TO CALLER V IDEO_RETURN

ENDP

5-152

VIDEO1

IBM Personal Computer MACRO AaaeMbl.r

VIDEOI - - Ob/l0/85 VIDEO DISPLAY BIOS

V.rslon 2.00

1067

1068

1069

1070

1071

1072

1073

1074

1075

101b

1077

1018

1019

1080

1081

1082

1083

1084

1085 0435

1086 0435 E8 0469 R

1087 0438 26: 81. 04

1088 0438 22 C4

1089 0430 02 EO

1090 043F BA CE

1091 0441 02 CO

10920443 E9 012E R

1093 0446

1094

1095 0446

1096 0446 50

1091 0441 50

1098 0448 E8 0469 R

1099 044B 02 E8

1100 0440 22 C4

1101 044F 26: 81. OC

1102 0452 58

103 0453 F6 C3 80

104 0456 75 00

105 0458 F6 04

106 0451. 22 CC

107 045C 01. CI

108 045E

109 045E 26: 88 04

110046158

1110462 E9 012E R

112 0465

113 0465 32 CI

114 0461 E8 F5

115 0469

116 .

'17

118

II.

120

121

1122

1123

1124

125

126

127

128

129 0469

130

131

132

133

134 0469 93

135 0461. BO 28

136 046C F6 E2

131 046E 1.8 08

138 0410 14 03

139 0412 05 IFD8

140 0475

1141 0475 96

1142047693

'45

146

147

148

'0'

150

151

152

153 0419 BB 02CO

154 041C B9 0302

155 041F 80 3E 0049 r 56 0484 12 06

151 0486 BB alBa

158 0489 B9 0703

I 159

I 160

1161 048C

1162 048C 22 EA

1163

1164

I 165

I 166 048E 03 EA

1167 0490 03 F2

168 0492 81. F1 lb'

170

171

112 0494 21. C9

113 0496

114 0496 DO C8

115 0498 02 CD

116 0491. FE CF

177 049C 15 F8

178 049E 8A E3

179 04AO 02 EC

180 04A2 C3

R 06

I-II

Ob-IO-85

PAGE

READ DDT -- WR ITE DOT

THESE ROUT I NES WILL WR I TE A DOT, OR READ THE

DOT AT THE INDICATED LOCATION

ENTRY -­

DX = ROW (0-199) (THE ACTUAL VALUE DEPENDS ON THE MODE)

CX

AL

= COLUMN ( 0-639) ( THE VALUES ARE NOT RANGE CHECKED I

=

DOT VALUE TO WRITE (1,2 OR 4 BITS DEPENDING ON MODE,

REQUIRED FOR WRITE DOT ONl:.Y, RIGHT JUSTIFIED)

BIT 1 OF AL = I

OS = DATA SEGMENT

INDICATES XOR THE VALUE INTO THE LOCATION

ES = REGEN SEGMENT

EXIT

AL = DOT VALUE READ, RIGHT JUSTIFIED. READ ONLY

I - - - - - - - - - -- - - - - - - - - - - - - - - - - - - - - - - - - ---- --- - - -­

ASSUME DSIDATA.ESIDHA

READ ~OT PROC NEAR

CALL R3

MOV AL.ES:[SI)

AND

SHL

MOV

READ_DOT

ROL

JMP

AL.AH

AL.CL

CL.DH

AL,CL

V IDEO RETURN

ENOP -

DETERMINE BYTE POSITION OF DOT

GET THE BYTE

MASK OFF THE OTHER BITS IN THE BYTE

LEFT JUSTIFY THE VALUE

GET NUMBER OF BITS IN RESULT

RIGHT JUSTIFY THE RESULT

RETURN FROM V IDEO I / a

WRITE DOT

PUSH

PUSH

CALL

SHR

AND

MOV

POP

TEST

JNZ

NOT

AND

OR

PROC

AX

AX

R3

NEAR

AL,CL

AL,AH

CL,ES: (51

BX

J

BL,80H

R2

AH

CL,AH

AL,CL

SAVE DOT VALUE

TWICE

DETERMINE BYTE POSITION OF THE ~OT

SHIFT TO SET UP THE BITS FOR OUTPUT

STR I P OFF THE OTHER BI TS

GET THE CURRENT BYTE

RECOVER XOR FLAG

IS IT ON

YES, XOR THE DOT

SET MASK TO REMOVE THE INDICATED BITS

RI;

OR IN THE NEW VALUE OF THOSE BITS

FINISH DOT

RESTORE THE BYTE I N MEMORY

R2:

"OV

POP

J"P

XOR

JMP

ES:(SI),AL

AX

VIDEO_RETURN

AL,CL

RI

; RETURN FROM VIDEO I/O

; XDR DOT

; EXc[US I VE OR THE DOTS

; FINISH UP THE WRITING

WR I TE_OOT

;

-

-------ENDP

-- - - - - - - - - - - - - - - - - -

-------------

-

-­

; THIS SUBROUTINE DETERMINES THE REGEN BYTE LOCATION OF THE

INDICATED ROW COLUMN VALUE IN GRAPHICS MODE.

ENTRY - ­

OX "' ROW VALUE (0-199)

CX = COLUMN VALUE (0-b39)

EX I T -­

SI

=

OFFSET INTO REGEN BUFFER FOR BYTE OF INTEREST

AH = MASK TO STRIP OFF THE BITS OF INTEREST

CL = BITS TO SHIFT TO RIGHT JUSTIFY THE MASK IN AH

~;

DH = # BITS IN RESULT

BX

=

MODIFIED

- - --

--~~~~ ----~~~~----

- ------ - - - ---- - - - - ---- -­

; - - - - -

R4:

DETERMINE 1ST BYTE IN INDICATED ROW BY MULTIPLYING ROW VALUE BY 40

( LOW BIT OF ROW DETERMINES EVEN/ODD, 80 BYTES/ROW)

XCHG

MOV

MUL

TEST

JZ

ADD

XCHG

XCHG

"OV

AX,BX

AL,40

DL

AL,008H

RO

AX,2000H-40

SI,AX

AX,BX

OX,CX

I WILL SAVE AL AND AH DURING OPERATION

AX= ADDRESS OF START OF INDICATED ROW

TEST FOR EVEN/ODD ROW CALCULATED

JUMP I F EVEN ROW

OFFSET TO LOCATION OF 000 ROWS ADJUST

EVEN ROW

MOVE-PO I NTER TO 5 I

RECOVER AL AND AH VALUES

COLUMN VALUE TO

OETERM I NE GRAPH 1 CS MODE CURRENTL YIN EFFECT ox

SET UP THE REGISTERS ACCORDING TO THE MODE

CH = MASK FOR LOW OF COLUMN ADDRESS ( 1/3 FOR HIGH/MED RES)

CL = ,. OF ADDRESS BITS IN COLUMN VALUE ( 3/2 FOR HIM t

BL = MASK TO SELECT BITS FROM POINTED BYTE ( 80H/COH FOR HIM)

BH = NUMBER OF VALID BITS IN POINTED BYTE ( 1/2 FOR HIM I

~~~---

MOV

MOV

CMP

JC

MOV

MOV

BX,2COH

CX,302H

«ICRT MOOE,6

R5 -

BX,I8QH

CX,703H

SET PARMS FOR MED RES

HANDLE IF MEO RES

I SET PARMS FOR HIGH RES

DETERMINE BIT OFFSET IN BYTE FROM COLUMN MASK

AND CH,DL ; ADDRESS OF PEL WITH I N BYTE TO CH

DETERMINE BYTE OFFSET FOR THIS LOCATION IN COLUMN

SHR

ADO

MOV

OX,CL

SI,DX

DH,BH

; SH I FT BY CORRECT AMOUNT i INCREMENT THE POINTER

; GET THE # OF BITS IN RESULT TO OH

;-----

MULTIPLY BH (VALID BITS IN BYTE) BY CH (BIT OFFSETI

R6:

SUB

ROR

ADO

DEC

JNZ

"OV

SHR

RET

CL,CL

AL, I

CL.CH

BH

Rb

AH,BL

AH,CL

ZERO I NTO STORAGE LOCATION

LEFT JUSTIFY VALUE IN AL (FOR WRITE)

~OD IN THE BIT OFFSET VALUE

LOOP CONTROL

ON· EXIT, CL HAS COUNT TO RESTORE BITS

GET _ MASK TO AH

MOVE THE MASK TO CORRECT LOCATI ON

RETURN WITH EVERYTHING SET UP

VIDEO1

5-153

181 04A3

182

183

,.5

,.7

I • •

I ••

19'

191

192

1201

1206

1209

1210

1211

1212

1213

1214

1215

1216

1211

1218

1219

1220

1193

1194

1195

1196

1191

I 198

1199

1200

1201

1202

1203

1204

1205

1206

04A3

04A3

04A5

04Al

04AA

04AC

04AE

0482

0485

04BA

04BC

04BE

8A

88

E6

88

28

81

CO

80

13

00

DI

08

C I

0608 R

FB

01

C2

E6

3E

04

E2

E1

0101

02

0049

1215

1216

1211

1218

1219

1280

1281

1282

1283

1284

1285

1286

1281

1259

1260

1261

1262

1263

1264

1265

1266

1261

1268

1269

1270

1211

1212

1213

1214

1288

1289

1290

1291

1292

1293

1294

1221

1222

1223

1224

1225

1226

1221

1228

1229

1230

1231

1232

1233

1234

1235

1236

1231

04CO

04CQ

04CI

04C2

04C4

04C1

04C9

04CB

04CD

04CF

0401

0403

0405

1236

1239

1240

1241

1242

1243

1244

1245

1246

1241

1248

1249

1250

0401

0401

04DA

040E

04E2

04E4

04E6

04E6

04E8

04E8

04EB

04EF

04FI

04F3

1251

1252

1253

1254

1255

1256

1251

1258

04F6

04F6

04F8

04FA

IF

2A

CO

14

6A

B4

ED

E3

20

C3

50

F6

6B

03

E4

F1

FO

6A

2A

E6

E3

E6

61

61

FE CC

15 FI

8A

E8

81

FE

15

E9

8A

E8

EF IF80

C1

DE

EC

02

0556 R

EE lF80

0511 R

EF lFBO

CB

F5

012E R

04FA

04FA

04F8

04FD

04FF

0502

0504

0506

050A

0500

0512

FO

8A

88

E8

8B

2B

81

CO

80

13

08

C2

0608

F8

0 I

C2 0 I 0 I

E6 02

3E 0049

05

R

R 06

R 06

IBM Pe ... sonal Comput .... MACRO Ass.mbl....

VIDEO! --06/10/85 VIDEO DISPLAY 8105

V.... slon 2.00 1-12

06-10-85

R3 ENOP

SCROLL UP

THIS ROUTINE SCROLLS UP THE INFORMATION ON THE CRT

ENTRY -­

CH, CL = UPPER LEFT CORNER OF REG I ON TO SCROLL

DH, DL " LOWER RIGHT CORNER OF REG 1 ON TO SCROLL

BOTH OF THE ABOVE ARE I N CHARACTER pas I TI ONS

8H = FILL VALUE FOR BLANKED LINES

AL " # LINES TO SCROLL (AL=O MEANS BLANK THE ENTIRE FIELD)

OS = DATA SEGMENT

ES " REGEN SEGMENT

EX I T -­

NOTH I NG, THE SCREEN J S SCROLLED b;~;~~ ~~ -~;

-----

;;~~

----

~~~;-------

--------- -----------­ hiov

MOV

BL,AL

AX,CX

; SAVE LINE COUNT IN BL

~ GET UPPER LEFT POSITION INTO AX REG

1-----

, - - - - -

; - - - - -

USE CHARACTER SUBROUTINE FOR POSITIONING

ADDRESS RETURNED IS MULTIPLIED 8Y 2 FROM CORRECT VALUE

CALL GRAPH~POSN

OI,AX

DETERMINE SIZE OF WINDOW

1 SAVE RESULT AS DESTINATION ADDRESS

SUB

ADD

SAL

DX,CX ox,

10 IH

DH,2

DETERMINE CRT MODE

AD..JUST VALUES

MULTIPLY ROWS BY 4 AT 6 VERT DOTS/CHAR

AND EVEN/ODD ROWS

1-----

C"P

JNC

(lCRT MOOE,6

R7 -

MEDIUM RES UP

SAL DL,I

SAL 01,1

TEST FOR MEDIUM RES

FIND_SOURCE

# COLUMNS· 2, SINCE 2 BYTES/CHAR

OFFSET ·2 SINCE 2 BYTES/CHAR

DETERMINE THE SOURCE ADDRESS IN THE BUFFER

PUSH

PDP

ES

OS

FIND SOURCE

GET SEGMENTS BOTH PO I NT I NG TO REGEN

SUB

SAL

JZ

MDV

MDV

"Ul

CH,CH

BL,2

RII

AL,BL

AH,60

AH

ZERO TO HIGH OF COUNT REGISTER

MULTIPLY NUMBER OF LINES BY 4

I F ZERO, THEN BLANK ENT [RE F! ELO

GET NUMBER OF LINES IN AL

60 BYTES/ROW oETERM I NE OFFSET TO SOURCE

"DV

ADD

"DV

SUB

S 1.0 I

S I. AX

AH,DH

AH,8L

SET UP SOURCE

ADD I N OFFSET TO IT

NUMBER OF ROWS IN FIELD

DETERMINE NUMBER TO MOVE

1----- LOOP THROUGH, MOV I NG ONE ROW AT A T I ME, BOTH EVEN AND ODD FIELDS

R8: ROW LOOP

CALL RI7 MOVE ONE ROW

SUB

SUB

S I ,2000H-60

DI,2000H-eo

MOVE TO NEXT ROW

DEC

JNZ

AH

R6

NUMBER OF ROWS TO MOVE

CONT I NUE TILL ALL MOVED

FILL IN THE VACATED LINE(SI

CLEAR ENTRY

ATTRIBUTE TO FILL WITH

Rl01

CALL

SUB

DEC

JNZ

J"P

AL,BH

RIO

01,2000H-60

Bl

RIO

VIDEO_RETURN

CLEAR THAT ROW

PO I NT TO NEXT LI NE

NUMBER OF' LINES TO FILL

CLEAR LOOP

EVERYTH I NCi DONE

Rl I:

MOV

..JMP

BL.OH

R9

BLANK F IELO

SET 8LANK COUNT TO EVERYTHING IN FiELD

CLE AR THE FIELD

GRAPHICS_UP

;

ENDP

--- -------------------

-

- ------

--- --- -- ----

- - - - - - ----­

; SCROLL DOWN

; THIS ROUTINE SCROLLS DOWN THE INFORMATION ON THE CRT

; ENTRY - ­

; CH. CL = UPPER LEFT CORNER OF REG I ON TO SCROLL

; DH,DL = LOWER RIGHT CDRNER OF REGION TO SCROLL

BOTH OF THE ABOVE ARE I N CHARACTER POS I T IONS

BH " FILL VALUE FOR BLANKED LINES

AL

= ,

LINES TO SCROLL (AL=O MEANS 8LANK THE ENTIRE FIELD)

OS = DATA SEGMENT

ES = REGEN SEGMENT

EXIT -­

NOTH I NG, THE SCREEN I S SCROLLED

GRAPH I CS DOWN

; - - - - -

~TD

MOV

MOV

PROC

BL,AL

AX,DX

NEAR

; SET 0 I RECT I ON

; SAVE LINE COUNT IN BL

I GET LOWER RIGHT POS I T I ON [NTO AX REG

USE CHARACTER SUBROUTINE FOR POSITIONING

ADDRESS RETURNED IS MULTIPLIED BY 2 FROM CORRECT VALUE

; - - - - -

CALL

"DV

GRAPH POSN

DI,AX~

DETERM I NE SIZE OF WI NOOW

SUB

ADD

SAL

OX

,ex

OX,! 0 IH

OH,2

OETERMINE CRT MODE e"p

JNC

OCRT MODE, eo

R12 -

; SAVE RESULT AS DESTINATION ADDRESS

AD..JUST VALUES

MULTIPLY ROWS BY 4 AT 8 VERT DOTS/CHAR

AND EVEN/ODD ROWS

TEST FOR MED I UM RES

F I ND~SOURCE~DOWN

5-154 VIDEO1

IBM Person_I Computer MACRO Assembler

VIDEOI - - - 0&/10/85 VIDEO DISPLAY BIOS

VersIon 2.00

1295

1296 0514 DO

1291051601

1298 0518 47

1299

1300

130 I 0519

1302 0519 06

1303 051A IF

1304 0518 2A

1305 0510 81

130& 0521 CO

1307 0524 74

1308 052& 8A

1309 0528 B4

1310 052A F&

1311 052C 8B

1312 052E 28

1313 0530 8A

13140532 2A

1315

1316

13170534

13180534 E8

13190537 81

1320 053B 81

1321 053F FE

1322 0541 75

1323

1324

1325 0543

1326 0543 8A

1327 0545

1328 0545 E8

E2

E7

ED

C7 OOFO

E3 02

2E

C3

50

E4

F7

FO

E&

E3

0558 R

EE 2050

EF 2050

CC

F 1

C7

0571 R

1329 0548 81

1330 054C FE

1331 054E 75

1332 0550 FC

1333 0551 E9

1334

1335 0554

1336 0554 8A

1337 0556 E8

EF 2050

CB

F5

012E R

DE

EB

1338 0558

1339

1340

1341

1342 0558

1343 0558 8A

1344 OSSA 5&

1345 0558 57

134& 055C F3/

CA

A4

1341 055E SF

1348 055F 5E

1349 0560 81 C6 2000

C1 2000 1350 0564 81

1351 0568 56

1352 0569 57

1353 056A 8A

1354 056C F3 f

1355 056E 5F

CA

A4

1376

1371

1378

1319

1380

1381

1382

1383

1384

1385

1386

1387

1356 056F 5E

1357 0570 C3

13580511

1359

1360

13&1

13620571

1363 0571 8A

1364 0513 57

1365 0574 F3{

CA

AA

1366 0516 5F

1361 0577 81

1368 057B 51

C7 2000

1369 057C 8A

1370 057E F3!

CA

AA

137 I 0580 5F

13720581 C3

1373 0582

1374

1375

1388

1389

1390

1391

1392

1393

1394

1395

1396

1397

1398

1399

1400

1401

1402

1403

1404

1405 0562

1406 0582 B4

1407 0584 50

1408

00

1-13

06-10-85

MED I UM RES DOWN

SAL

SAL

INC

DL,1

01,1

01

; # COLUMNS 2, SINCE 2 BYTES/CHAR

: OFFSET -2 SINCE 2 8YTES/CHAR

; PO I NT TO LAST BYTE

DETERMINE THE SOURCE ADDRESS IN THE BUFFER

F I NO SOURCE DOWN

PUSH

FOF

ES

OS

BOTH-SEGMENTS TO REGEN

SUB

ADD

SAL

"Z

MDV

MDV

MUL

MDV

SUB

MOY

SUB

CH,CH o

I 1240

8L,2

RI b

AL,BL

AH,80

AH

SI,DI

SI,AX

AH,DH

AH,BL

ZERO TO HIGH OF COUNT REGISTER

POINT TO LAST ROW OF PIXELS

MULTIPLY NUMBER OF LINES BY 4

I F ZERO, THEN BLANK ENT I RE FIELD

GET NUMBER OF LINES IN AL

80 BYTES/ROW

DETERMINE OFFSET TO SOURCE

SET UP SOURCE

SUBTRACT THE OFFSET

NUMBER OF ROWS IN FIELD

OETERM I NE NUMBER TO MOVE

R 13:

;-----

R14:

Rt5:

LOOP THROUGH, MOV I NG ONE ROW ATAT 1ME, BOTH EVEN AND ODD FIELDS

ROW LOOP DOWN

CALL RI1 MOVE ONE-ROW

SUB

SUB

SI,2000H+80

DI,2000H+eO

MOVE TO NEXT ROW

DEC

"NZ

AH

RI3

NUMBER OF ROWS TO MOVE

; CONTINUE TILL ALL MOVED

FILL IN THE VACATED LINE!S)

MOV

CALL

SUB

DEC

JNZ

CLD

.JMP

AL,BH

RI8

DI,2000H+80

BL

RI5

VIDEO_RETURN

CLEAR ENTRY DOWN

ATTRIBUTE TO FILL WITH

CLEAR LOOP DOWN

CLEAR-A ROW

POINT TO NEXT LINE

NUMBER OF LINES TO FILL

CLEAR LOOP DOWN

RESET-THE is I RECT ION FLAG

EIIERYTH I NG DONE

R16:

MDV

JMP

GRAPH I CS_DOWN

BL,DH

RI'

ENDP

BLANK FIELD DOWN

SET BLANK COUNT TO EVERYTHING IN FIELD

CLEAR THE FIELD

. - - - ROUTINE TO MOVE ONE ROW OF INFORMATION

R17 PROC

MOV

PUSH

PUSH

REP

FDF

FOP

ADD

ADD

PUSH

PUSH

MQV

REF

FDF

PDP

RET

ENDP

NEAR

CL,OL

51

01

MOVSB

01

51

SI,ZOOOH

OI,ZOOOH

51

01

CL,DL

MOVSB

01

51

1-----

CLEAR A SINGLE ROW

NUMBER OF BYTES IN THE ROW

SAVE POINTERS

MOVE THE EVEN FIELD

POINT TO THE ODD FIELD

SAVE THE PO INTERS

COUNT BACK

MOVE THE ODD FIELD

PO I NTERS BACK

RETURN TO CALLER

,

;

RI6 PROC

MDV

PUSH

REF

PDF

ADD

NEAR

CL,DL

01

STOSB

01

DI,2000H

PUSH

MDV

REF

FOP

01

CL,DL

STOSB

01

RET

RI8

;-

ENDP

-------------------------­

; GRAPH[CS WRITE

; NUMBER OF BYTES IN FIELD

SAVE PO INTER

STORE THE NEW VALUE

PO I NTER BACK

POINT TO ODD FIELD

FILL THE ODD FIELD

RETURN TO CALLER

THIS ROUTINE WRITES THE ASCII CHARACTER TO THE CURRENT

POS I T ION ON THE SCREEN.

ENTRY -­

AL

=

CHARACTER TO WR I TE

BL

=

COLOR ATTR I BUTE TO BE USED FOR FOREGROUND COLOR

IF BIT 7 IS SET, THE CHAR IS XOR'D INTO THE REGEN BUFFER

CX

OS

ES

(0 I S USED FOR THE BACKGROUND COLOR)

=

NUMBER OF CHARS TO WRITE

=

DATA SEGMENT

=

REGEN SEGMENT

EXIT - ­

NOTH I NG IS RETURNED

GRAPH I CS READ

TH I 5 ROUT I NE READS THE ASC I I CHARACTER AT THE CURRENT CURSOR

POS I T I ON ON THE SCREEN BY MATCH I NG THE DOTS ON THE SCREEN TO THE

CHARACTER GENERATOR CODE PO 1NTS

ENTRY -­

NONE 10 IS ASSUMED AS THE BACKGROUND COLOR)

EX [T

AL

=

CHARACTER READ AT THAT POSITION (0 RETURNED IF NONE FOUND)

FOR BOTH ROUTINES, THE IMAGES USED TO FORM CHARS ARE CONTAINED IN ROM

FOR THE 1ST 128 CHARS. TO ACCESS CHARS IN THE SECOND HALF, THE USER

MUST INITIALIZE THE VECTOR AT INTERRUPT 1FH (LOCATION 000lCHI TO

POINT TO THE USER SUPPLIED TABLE OF GRAPHIC [MAGES 18Xe BOXES).

;

- -

FAILURE TO DO SO WILL CAUSE IN STRANGE RESULTS -----

--- - - - - - - - - - - - - - - - - - --- - - - ------ - - - - - - - - - - - - -­

ASSUME DS:DATA,ES:DATA

GRAPHICS WRITE PROC NEAR

MOV

PUSH

AH,O

AX

ZERO TO HIGH OF CODE PO I NT

SAVE CODE POINT VALUE

VIDEOl S-lSS

IBM Pe!"lIIonal Comput.e!" MACRO A$$embler

VIDEOI --06/10/85 VIDEO DISPLAY BIOS

Ve!".!on 2.00

1-409

1-410

1-41 I 0585 E8 0605

1-412 0588 8B Fe

1413

1-414

1-415

1416 O,SA 58

1417 OS8B 3C 80

1-418 0580 73 06

1-419 '

R

1420

1421

1-422 058F BE 0000 E

1423 0592 OE

1424 0593 EB OF

1-425

1-426

1-427

1-428 059,

1-429 0595 2C 80

1-430 0597 IE

1-431 0598 2B F6

1-432 059A 8E DE

1-433

1-434 059C C5 36 007C R

1435 05AO 8C DA

1436

1437 05A2 IF

1438 05A3 52

1439

1440

1441

1442 05A-4

1443 05A-4 CI EO 03

1444 05A7 03 FO

1-445 05"9 80 3E 0049 R 06

1-4-46 05AE IF

1447 05AF 72 2C

1448

1449

1450 05BI

1451 0581 57

1452 0582 56

1453 0583 B6 04

1454 05B5

1455 05B5 Ac eo

1456 0586 FE:. C3

1457 05B9 75

1458 05SB AA

1459 058C AC

16

1460 0580

1461 05BO 261 88 85 IFFF

1462 05C2 83 CT 4F

1463 05C' FE CE

1464 05C7 75 EC

1465 OSC9 5E

1466 05CA SF

1467 05CB 47

1468 05CC E2 E3

1469 OSCE E9 012E R

1470

1471 0501

1472 0501 261 32 05

1473 0504 AA

1474 0505 AC

1475 0506 26: 32 85 lFFF

1476 050B EB EO

1477

1478

1479 0500

1480 0500 8A 03

1481 050F 01 E7

1482

1483 05EI 80 E3 03

1-484 05E4 BO 55

1485 05Eb F6 E3

1486 05E8 8A 08

1487 05EA 8A F8

1488 05EC

1489 05EC 57

1490 05ED 56

1491 OSEE B6 04

1492 05FO

1493 05FO AC

1494 05F 1 E8 06AD R

1495 05F4 23 C3

1496 05F6 86 EO

1491 05F8 F6 C2 80

1498 05FB 74 03

1499 O,FD 261 33 05

1500 0600

1501 0600 26: 89 05

1502 0603 AC

1503 Q604 E8 06AO R

1504 0607 23 C3

1505 0609 86 EO

\ 506 060B F6 C2 80

1507 060E 74 05

1508 0610 26: 33 85 2000

1509 0615

1510 0615 26: 89 85 2000

1511 061A 83 C7 50

1512 0610 FE CE

1513 061F 75 CF

1514 0621 5£

1515 0622 5F

1516 0623 47

\517062447

1518 0625 E2 C5

1519 0627 E9 012E R

1520 062A

1521

1522

1-14

06-10-85

DETERt.4INE POSITION IN REGEN BUFFER TO PUT CODE POINTS

CALL

"OV

52.

DI,AX

I FIND LOCAT ION IN REGEN

; REGEN POINTER IN 01

BUFFER

;----~ DETERt.4INE REGION TO GET COOE POINTS FROt.4

; - - - - -

AX

AL.80H

51

; RECOVER CODE PO I NT

I [S iT IN SECOND HALF

I YES

IMAGE IS IN FIRST HALF, CONTAINED IN ROM

S! :

S2:

54,

S5; t.40V

PUSH

Jt.4P

51 ,OFFSET CRT CHAR GEN

CS

SHORT 52

-

; OFFSET OF IMAGES

; SAVE SEGMENT ON STACK

: DETERt.41 NE_t.40DE

It.4AGE IS IN SECOND HALF, IN USER MEMORY

SUB

PUSH

SUB

AL.80H

OS

SI,SI

"OV OS.SI

ASSUt.4E OS:AB50

LOS

"OV

SI,~EXT ox.Os -

ASSUt.4E DS:DATA

POP

PUSH

OS

OX

PTR

EXTEND CHAR

ZERO ORIGIN FOR SECOND HALF

SAVE DATA POINTER

EST ABL I SH VECTOR ADDRESS I NG

GET THE OFFSET OF THE TABLE

GET THE SEGt.4ENT OF THE TABLE

RECOVER DATA SEGMENT

SAVE TABLE SEGt.4ENT ON STACK

DETERMINE GRAPHICS MODE IN OPERATION

AX,3

S I, AX

"CRT t-tODE.6

OS ­

57

DETERt.41 NE t.40DE

~ULTIPLY

CODE POINT VALUE BY 8

SI HAS OFFSET OF DESIRED CODES

RECOVER TABLE POINTER SEGMENT

TEST FOR MEDIUM RESOlUTION MODE

HIGH RESOLUTION t.40DE

PUSH

PUSH

MOV

01

SI

DH,4

HIGH CHAR

SAVE-REGEN PO INTER

SA VE CODE PO INTER

NUt.4BER OF T I t.4ES THROUGH LOOP

LOOSB

TEST

,JNZ

STOSB

LOOSB

BL,80H

S6

GET BYTE FROM CODE POINTS

SHOULD WE USE THE FUNCT I ON

TO PUT CHAR IN

STORE I N REGEN BUFFER

NOV

ADD

DEC

JNZ

POP

POP

INC

LOOP

J"P

ES: [OI+2000H-l J ,AL

01.19

DH

54

51

01

01

53

VIDEO_RETURN

STORE IN SECOND HALF

MOVE TO NEXT ROW I N REGEN

DONE WITH LOOP

RECOVER REGEN PO INTER

POINT TO NEXT CHAR POSITION t.40RE CHARS TO WRITE

56,

XOR

STOSB

LODSS

XOR

.Jt.4P

AL.ES: 101

J

AL.ES: [01 +2000H-I]

S5

EXCLUS I VE DR WITH CURRENT

STORE THE CODE PO I NT

AGAIN FOR DOD FIELD

BACK TO MA 1 NSTREAM

MEDIUM RESOLUTION WRITE

56,

NOV

SAL

ANO

"OV

"UL

"OV

"OV

PUSH

PUSH

DL,BL

01.1

BL,3

AL,OS5H

BL

BL,AL

BH.AL

01

51

DH,4 t.4ED RES WRITE

SAVE-HIGH COLOR BIT

OFFSEP2 SINCE 2 BYTES/CHAR

EXPAND BL TO FULL WORD OF COLOR

ISOLATE THE COLOR B[TS 1 LOW 2 BITS)

GET BIT CONVERSION t.4ULTlPLIER

EXPAND 2 COLOR BITS TO 4 REPLICATIONS

PLACE BACK I N WORK REG I STER

EXPAND TO 8 REPLICATIONS OF COLOR BITS t.4EO CHAR

SAVE-REGEN POINTER

SAVE THE CODE POINTER

NUMBER OF LOOPS "OV

S9:

LOOSB

CALL

AND

XCHG

TEST

JZ

XOR

5Z1

AX,ax

AH,AL

OL,80H

510

~X,ES: [01]

GET CODE POINT

DOUBLE UP ALL THE BITS

CONVERT TO FOREGROUND COLOR ( a

BACK )

SWAP HIGH/LOW BYTES' FOR WORD t.40VE

IS THIS XOR FUNCTION

NO, STORE IT IN AS IT IS

DO FUNCTION WITH LOW/HIGH

SIO:

MOV

LODSB

CALL

AND

XCHG

TEST

JZ

XDR

ES: [01] ,AX

521

AX,ax

AH,AL

DL,80H

511

AX,ES, [OI+2000H)

STORE FIRST BYTE HIGH. SECOND LOW

GET CODE POINT

CONVERT TO COLOR

SWAP HI GH/LOW BYTES FOR WORD ~OVE

AGAIN, (S THIS XOR FUNCTION

NO. JUST STORE THE VALUES

FUNCTION WITH FIRST. HALF LOW

SI t:

MOV

ADD

ES: [0 1+20001"1] • AX

01.80

STORE SECOND PORTION HIGH

POINT TO NEXT LOCATION

DEC

JNZ

DH

S9 KEEP GOING

POP 51

PDP

INC

01

01

RECOVER CODE PO INTER

RECOVER REGEN PO INTER

POINT TO NEXT CHAR POSITION

INC 01

LOOP

JMP

58 v

IDEO RETURN

GRAPHICS WRITE ENDP­ ; -------=------------------------ ---- ---­

I GRAPH I CS READ r t.40RE TO WRITE

5-156

VIDEO1

1523

1524 062A

1525 062A E8 0605 R

1526 0620 88 FO

1527 062F 83 EC 08

1528 0632 88 EC

1529

1530

1531

1532 0634 80 3E 0049 R 06

1533 0639 06

1534 063A IF

1535 0638 72 19

1536

1537

1538

1539

1540 0630 86

1541 063F

1542 063F 8A 04

1543 0641 8846 00

1544 0644 45

1545 0645 8A 84 2000

1546 0649 88 46 00

1547 064C 45

1548 0640 83 C6 50

1549 0650 FE CE

1550 0652 75 EB

1551 0654 E8 16

1552

1553

1554 0656

1555 0656 01 E6

1556 0658 86 04

1557 065A

1558 065A E8 06BC R

1559 0650 81 C6 IFFE

1560 0661 E8 06BC R

1561 066481 EE IF82

1562 0668 FE CE

1563 066A 75 EE

1564

1565

1566 066C

1567 066C 8F 0000 E

1568 066F DE

1569 0670 07

1570 0671 83 ED 08

1571 0674 88 F5

1572 0676 FC

1573 0677 80 00

1574 0679

1575 0679 16

1576 067A IF

1577 0678 8A 0080

1578 067E

1579 067E 56

1580 067F 51

158 I 0680 89 0004

1582 0683 F3/ A7

1583 0685 5F

1584 0686 5E

1585 0687 74 IE

1586 0689 FE CO

1587 0688 83 C7 08

1588 068E 4A

1589 068F 75 ED

1590

1591

1592

1593 0691 3C 00

15940693 74 12

1595 0695 28 CO

1596 0697 8E 08

1597

1598 0699 C4 3E 007C R

1599 0690 8C CO

1600 069F OS C7

1601 06AI 7404

1602 06A3 BO 80

1603 06A5 EB 02

1604

1605

1606

1607 06A7

1608 06A7 83 C4 08

1609 06AA E9 0 I 2E R

1610 06AO

1611

1612

1613

1614

1615

1616

161706AD

1618 06AD 51

1619 06AE 89 0008

1620 0681

1621 0681 DO C8

1622068301 DO

1623 0685 01 FD

1624 0661 E2 F8

1625

1626 0689 95

1627 06BA 59

1628 0688 C3

1629 068C

1630

1631

1632

1633

1634

1635

1636

IBM Personal Computer MACRO Assembler

VIOEOI --06/10/85 VIDEO OISPL.AY 8105

Version 2.00 1- I 5

06-10-65

;

- ------- - - ----- - ------- ---- --­

GRAPH 1 CS READ PRDC NEAR

CAL.L

MOV

SUB

MOV

S26

SI,AX sP,a

8P,SP

, - - - - -

DETERMINE GRAPHICS MODES eMP

PUSH

POP

Je

C-CRT MODE,6

E5 ­

OS

513

HIGH RESOLUT ION READ

CONVERTED TO OFFSET IN REGEN

SAVE IN SI

ALLOCATE SPACE FOR THE READ CODE POINT

POINTER TO SAVE AREA

PO J NT TO REGEN SEGMENT

MED I UM RESOLUT I ON

; - - - - GET VALUES FROM REGEN BUFFER AND CONVERT TO CODE POINT

MOV DH,4 ; NUM8ER OF PASSES

S 12:

May

MOY

INC

May

HOY

INC

ADO

DEC

JNZ

JMP

[~p~:~~

BP

AL, [S J +2000H]

[BP] ,AL

BP sl,ao

OH

512

SHORT 515

1----MEo I UM RESOLUT I ON READ

S13:

SAL

MOY

S I, \

OH,4

5141

CALL

ADO

CALL

SUB aEC

JNZ

523

S I ,2000H-2

523

SI,2000H-80+2

DH

51.

GET FIRST 8YTE

SAVE I N STORAGE AREA

NEXT LOCAT I ON

GET LOWER REGION BYTE

ADJUST AND STORE

PO I NTER I NTO REGEN

LOOP CONTROL

DO IT SOME MORE

GO MATCH THE SAVED CODE POINTS

MED RES READ

OFFSEP2 SINCE 2 BYTES/CHAR

NUM8ER OF PASSES

GET BYTES FROM REGEN INTO SINGLE SAVE

GO TO LOWER REG I ON

GET THIS PAIR INTO SAVE

ADJUST POINTER BACK INTO UPPER

KEEP GOING UNTIL ALL 8 DONE

~ ~; ~ -­

S 16 =

SIT:

SAVE AREA HAS CHARACTER IN IT. MATCH IT

HOY

PUSH

01 e5

,OFFSET CRT_CHAR GEN

FIND CHAR

EST ABL I SH ADDRESS 1 NG

POP

SUB

MOY

E5

BP,8

SI,BP

CODE POINTS IN CS

ADJUST POINTER TO START OF SAVE AREA eLO

MOY AL,O

ENSURE 0 I RECT I ON

CURRENT CODE POINT 8EING MATCHED

PUSH

POP

MOY

55

OS

DX,128

ESTABLISH ADDRESSING TO STACK

FOR THE STR I NG COMPARE

NUMBER TO TEST AGA I NST

PUSH

PUSH

HOY

REPE

POP

POP

J,

INC

ADO

DEC

JNZ

51

01

CX,4

CMPSW

01

51

SIB

AL

DI,a ox

517

SAVE SAVE AREA POINTER

SAVE CODE PO INTER

NUMBER OF WORDS TO MATCH

COMPARE THE 8 BYTES AS WORDS

RECOVER THE PO INTERS

I F ZERO FLAG SET. THEN MATCH OCCURRED

NO MATCH, MOVE ON TO NEXT

NEXT CODE POINT

LOOP CONTROL

DO ALL OF THEM

CHAR NOT MATCHED, MIGHT 8E IN USER SUPPLIED SECOND HALF eMP

JE

AL,O

51 B

SUB

MaY

AX .AX

DS,AX

ASSUME OS: A8S0

LE5 o

[,.EXT PTR

HOY AX ,ES -

OR

HOY

JHP

AX.DJ

SIB

AL,I28

SI.

ASSUME DS:DATA

AL<> 0 IF ONLY 1ST HALF SCANNED

1 F = 0, THEN ALL HAS 8EEN SCANNED

ESTABLISH ADDRESSING TO VECTOR

GET POINTER

SEE I F THE PO INTER REALLY EX I S TS

IF ALL 0, THEN DOESN'T EXIST

NO SENSE LOOK I NG

OR I GIN FOR SECOND HALF

GO BACK AND TRY FOR IT

1-----

518:

CHARACTER IS FOUND ( AL.=O IF NOT FOUND)

ADO

JMP sP,a

V IDEO RETURN

, READJUST THE STACK. THROW AWAY SAVE

; ALL DONE

GRAPHICS_READ ENOP ­ ;

-~;;~~~-~;~~

- - - -- - - - - - - - -- ---------------- -­

; THIS ROUTINE TAKES THE BYTE IN AL AND DOUBLES ALL

; OF THE 81TS, TURNING THE

: THE RESUL TIS LEFT I N AX

8 81TS INTO 16 BITS,

PROC

PUSH

NEAR cx

CX,S

SAVE REGISTER

SHIFT COUNT REGI STER FOR ONE BYTE

S22 :

ROR

RCR

SAR

LOOP

AL,I

BP,I

BP.l

522

SHIFT BITS, LOW BIT INTO CARRY FLAG

MOVE CARRY FLAG I LOW 81 T) I NTO RESULTS

SIGN EXTEND HIGH BIT WOUBLE ITI

REPEAT FOR ALL 8 81TS

XCHG

POP

RET

521 ENDP

;-----------­

; MEo READ 8YTE

AX,BP cx

I MOVE RESULTS TO PARAMETER REGISTER

; RECOVER REG I STER

I ALL DONE

; THIS ROUTINE WILL TAKE 2 BYTES FROM THE REGEN BUFFER,

, COMPARE AGA I NST THE CURRENT FOREGROUND COLOR, AND PLACE

; THE CORRESPONDING ON/OFF BIT PATTERN INTO THE CURRENT

POSITION IN THE SAVE AREA

ENTRY -­

VIDEO1

5-157

IBM Pereonet COMpute,.. MACRO Assembler

VIDEOI - - 06/10/85 VIDEO DISPLAY BIOS

Ver.ion 02.00

1637

1636

1639

1640

1641

1642

1643 06BC

1644 06BC AD

1645 0680 86 C4

1646 06BF B9 COOO

1647 06C2 B2 00

1648 ObC4

1649 06C4 85 CI

1650 06C6 74

1651 06C8 F9

01

1652 06C9

1653 06C9 DO 02

'654 06C8 CI E9 02

1655 06CE 13 F4

1656 0600 88 56 00

1657 0603 45

1658 0604 C3

1659 0605

1660

1661

166,2

1663

1664

1665

1666

1661

1668

1669

1610

1611 0605

1612 0605 AI 0050 R

1673 0608

1674 0608 53

1675 0609 88 08

1676 060B 8A C4

1677 0600 F6 26 004A R

1678 06EI CI EO 02

1619 06E4 2A FF

1680 06E6 03 C3

1681 06E8 58

1682 06E9 C3

1683 06EA

1684

1685

1686

1687

1688

1689

1690

1691

1692

1693

1694

1695

1696

1697

1698

1699

1100

1101

110,2

1103

1104

1105

1106

1101 06EA

1108 06EA 50

1109 06EB 50

1110 06EC 84 03

1711 O&EE 8A 3E 0062 R

1112 06F2 CO 10

1113 06F4 58

1114

11 IS

1116

1111 0&F5 3C 00

1118 06Fl 164&

1119

1120

1121 06F.

1122 06F. B4 OA

1123 06FB B9 0001

1124 06FE CO I 0

1125

1126

1121

1128 0100 FE C2

112' 0102 3A 16 004A R

1130 0106 15 33

1131 01088200

1132 010A 80 FE 18

1133 0100 15 2A

1134

1135

1136 010F

1131 OlaF 84 02

11380111 CD 10

1139

1140

1141

1142 0113 AD 004' R

11430116 3C 04

1144 0718 102 06

1145 aliA 3C 07

1146 011C B7 00

IT41 011E 15 06

1148 01.20

1149 01.20 84 08

1150 012,2 CD 10

1-16

06-10-85

;

;

,

SI,OS

BX

BP

= POINTER TO REGEN AREA OF INTEREST

=

EXPANDED FOREGROUND COLOR

=

POINTER TO SAVE AREA

I EXIT -­

;

~~;-

SIANO BP ARE INCREMENTED

--

- -

;~~;

- - - -

~~~~

-------

- - -

----

- - - - - - - - - - - - - - - - -

-­

LODSW

XCHG

MOV

MOV

AL, AH

CX.OCOOOH

DL, 0

GET F[RST BYTE AND SECOND BYTES

SWAP FOR COMPARE

2 BIT MASK TO TEST THE ENTRIES

RESULT REG I S TER

S24 ~

TEST

"Z

5TC

AX,CX

52.

IS THI S SECTI ON BACKGROUND?

IF ZERO. IT IS BACKGROUND (CARRY.,O)

WASN'T. SO SET CARRY

S25:

RCL

5HR

DL,I

CX.2

"NC

MOV

INC

52.

[8Pj.OL

BP

RET

523

;

ENDP

---- ----- - -

-

V4 POSITION

-

---

- - -

----------------

- - - -

-­

MOVE THAT BIT I NTO THE RESULT

MOVE THE MASK TO THE RIGHT BY 2 81TS

DO IT AGAIN IF MASK DIDN'T FALL OUT

STORE RESULT IN SAVE AREA

ADJUST POINTER

ALL DONE

TR [S ROUT I NE TAKES THE CURSOR POS [T I ON CONT A I NED 1 N

THE MEMORY LOCATION, AND CONVERTS IT INTO AN OFFSET

INTO THE REGEN BUFFER, ASSUMING ONE BYTE/CHAR.

FOR MEDIUM RESOLUTION GRAPHICS. THE NUMBER MUST

BE DOUBLED.

ENTRY - -

EXIT--

NO REGISTERS,MEMORY LOCATION .CURSOR POSN IS USED

;~~

AX CONTAINS OFFSET INTO REGEN BUFFER

--

---PR~

--

--~~;R-

--------------------­

MOV

GRAPH POSN

PUSH

MOV

MOV

MUL

SHL

SU8

AX ,.CURSOR POSN

LABEL NEAR

BX

BX,AX

AL.AH

BYTE PTR OCRT COLS

AX.2 -

BH,BH

GET CURRENT CURSOR

SAVE REGI STER

SAVE A COPY OF CURRENT CURSOR

GET ROWS TO AL

MULTIPLY BY BYTES/COLUMN

MULTIPLY· 4 SINCE 4 ROWS/BYTE

I SOLATE COLUMN VALUE

ADD

POP

RET

AX,BX

BX

DETERM I NE OFFSET

RECOVER POINTER

ALL DONE

S26 ENOP

; - - WR I TE_TTY - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- - - - - - - - - - - - - - - - - - - - - - - - ­

I

THIS INTERFACE PROVIDES A TELETYPE LIKE INTERFACE TO THE

V IDEO CARDS. THE I NPUT CHARACTER IS WR I TTEN TO THE CURRENT

CURSOR POSITION, AND THE CURSOR IS MOVED TO THE NEXT POSITION.

IF THE CURSOR LEAVES THE LAST COLUMN OF THE FIELD, THE COLUMN

I S SET TO ZERO, AND THE ROW VALUE I S INCREMENTED. I F THE ROW

I

ROW VALUE LEAVES THE FIELD. THE CURSOR IS PLACED ON THE LAST ROW,

FIRST COLUMN. AND THE ENTIRE SCREEN [S SCROLLED UP ONE LINE.

WHEN THE SCREEN IS SCROLLED UP, THE ATTR[8UTE FOR FILLING THE

NEWL Y 8LANKED LINE IS READ FROM THE CURSOR pas

I T I ON ON THE PREV 10US

LINE BEFORE THE SCROLL. IN CHARACTER MODE.

THE 0 COLOR [S USED.

ENTRY -­

(AH)

(ALl

= CURRENT CRT MODE

= CHARACTER TO BE WR ITTEN

IN GRAPHICS MODE,

NOTE THAT BACK SPACE. CARRIAGE RETURN, BELL AND LINE FEED ARE

HANDLED AS COMMANDS RATHER THAN AS DISPLAY GRAPHICS CHARACTERS fBU • FOREGROUND COLOR FOR CHAR WRITE IF CURRENTLY IN A GRAPHICS MODE

EXIT - ­

ALL REGISTERS SAVED

ASSUME DSIOATA

WRITE TTY PROC

PUSH

PUSH

MOV

AX

AX

AH,03H

NEAR

NOV

INT

POP

BH,.ACTiVE PAGE

IOH -

AX

SAVE REGI STERS

SAVE CHARACTER TO WRITE

GET CURRENT PAGE SETTi NG

READ THE CURRENT CURSOR POS I T I ON

RECOVER CHARACTER

1-----

OX NOW HAS THE CURRENT CURSOR POSITION

COP

"BE

AL.CR

U8

1-----

WRITE THE CHAR TO THE SCREEN

UOI

MOV

MOV

INT

AH,OAH

CX,I

10H

POS I T I ON THE CURSOR FOR NEXT CHAR

1SIT CARR I AGE RETURN OR CONTROL

GO TO CONTROL CHECKS IF [T [S

WR I TE CHARACTER ONLY COr.tMAND

ONLY ONE CHARACTER

WR I TE THE CHARACTER

INC

CMP

JNZ

NOV

COP

"NZ

DL

OL,BYTE PTR OCRT COLS

U1 -

DL,O

OH,25-1

Ub

SCROLL REQU [RED

TEST FOR COLUMN OVERFLOW

SET CURSOR

COLUMN FOR CURSOR

CHECK FOR LAST ROW

SET_CURSOR_'NC

MOV

INT

AH,02H

10H ; SET THE CUR SOR

1----DETERMINE VALUE TO FILL WITH DURING SCROLL

U"

MOV

CMP

"C

CMP

MOV

"NE

MOV

INT

AL ,OCRT_MODE

AL.4

U2

AL,T

BH,O

U3

AH,08H

, OH

; GET THE CURRENT MODE

; READ-CURSOR

FILL WITH BACKGROUND

SCROLL-UP

READ-CURSOR

GET READ CURSOR COMMAND

READ CHARIATTR AT CURRENT CURSOR

5-158 VIDEO1

IB~ Per-son. I Computer ~ACRO Assemb I er

VIDEOI - - - 06/10/85 VIDEO DISPLAY 8105

Vera i on 2.00 1-11

06-10-85

1151 0124 8A FC

1152 0126

1153 0126 B8 060 I

1154 0129 28 C9

1155 0128 86 18

1156 0120 8A 16 004A R

11510131 FE CA

1156 0133

1159 0133 CD 10

1160 0135

1161 013558

1162 0136 E9 012E R

1163

1164 0139

1165 0139 FE C6

1166 0138

1161 013B B4 02

1168 0130 EB F4

1169

1110

1111 013F

1112 013F 14 13

1113 0141 3C OA

1114 0143 14 13

1115 0145 3C 01

11160141 14 16

1111 0149 3C 08

1118 014B 15 AC

1119

1180

1181

1182 0140 OA 02

1183 014F 14 EA

11840151 4A

1185 0152 EB El

1186

1181

1788

1189 01'54

1790 0154 B2 00

1791 0156 EB E3

1192

1193

1194

1195 0158

1196015880 FE 18

1197 015B 15 DC

1198 0150 EB BO

1199

1800

180 1

1802 015F

1803 015F B9 0533

1804 0162 83 IF

1805 0164 E8 0000 E

1806 0161 EB CC

1801 0169

1808

1809

1810

181 I

1812

1813

1814

1815

1816

18 t 1

1818

1819

1820

1821

1822

1823 0769 03 03 05 05 03 03

1824

1825

03 04

1826

1821 0111

1828 0111 B4 00

1829 0113 8B 16 0063 R

1830 0111 83 C2 06

1831 011A EC

1832 011B A8 04

1833 0110 14 03

1834 071F E9 0803 R

1835

1836

1831

1838 0182 A8 02

1839 0184 15 03

1840 0186 E9 0800 R

184!

1842

1843

1844 0189

1845078984 10

1846

1841

1848

1849 018B 8B 16 0063 R

1850 016F 8A C4

1851 0191 EE

1852 0192 EB 00

1853 0794 42

1854 0195 EC

1855 0796 8A E8

1856 0198 4A

1851 0199 FE C4

1858 019B 8A C4

1859 0190 EE

1860 019E 42

1861 019F EB 00

1862 07AI EC

18b3 01A2 8A E5

1864

U3:

MOV

MOV

SUB

MOV

MOV

DEC

BH.AH

AX,060lH

CX,CX

DH.25-1

CL,BYTE PTR .CRT_COlS

DL

U4. us;

'NT

PDP

"MP

'OH

AX

VIDEO_RETURN

U6:

'NC DH

UT.

MOV

"MP

AH,02H

U4 r-----

CHECK FOR CONTROL CHARACTERS

U8.

"E

CMP

"E

CMF

.JE

CMP

"NE

U9

AL,LF

U,O

AL,OlH

UII

AL,08H

UO

BACK SPACE FOUND

STORE IN BH

SCROll-UP

SCROLL ONE LI NE

UPPER LEFT CORNER lOWER RIGHT ROW

LOWER RIGHT COLUMN

V r DEO-CALL -RETURN

SCROLL UP THE SCREEN

TTY-RETURN

RESTORE THE CHARACTER

RETURN TO CALLER

SET-CURSOR- INC

NEXT ROW

SET-CURSOR

I ESTABLISH THE NEW CURSOR

WAS IT A CARRIAGE RETURN

IS IT A LINE FEED

GO TO LINE FEED

'5

IT A BEll

GO TO BELL

'5

I T A BACKSPACE

IF NOT A CONTROL, DISPLAY IT

OR

"E

DEC

"MP

Ol,DL

U1

OX

U1

: -----

CARR I AGE RETURN FOUND

U9.

MOV

"MP

DL,O

UT

1-----

LINE FEED FOUND

IS IT ALREADY AT START

SET CURSOR

NO

=-

,JUST MOVE IT BACK

SET_CURSOR

MOVE TO FIR S T COLU~N

SET_CURSOR

OF LINE

UIOI

CMP

"NE

"MP

OH,25-1

Ub

U,

;-----

BELL FOUND

BOTTOM OF' SCREEN

YES. SCROLL THE SCREEN

NO, ,JUST SET THE CURSOR

;

I

I

Ull :

MOV

MOV

CALL

J~P eX,1331

BL,a I

BEEP us

ENDP o

I V I SOR FOR 89& HZ TONE

SET COUNT FOR 311 &4 SECOND FOR BEEP

SOUND THE POD BELL

TTY_RETURN

WRITE TTY

1-- -:= - - - - - --- ------ - - - - - - - - ----- - --- - -- - - - - - ----- - -- -- - - - - - - - ------- --­

1 LIGHT PEN

THIS ROUTINE TESTS THE LIGHT PEN SWITCH AND THE LIGHT

PEN TR 1 GGER. I F BOTH ARE SET. THE LOCAT I ON OF THE LIGHT

PEN IS DETERMINED. OTHERWISE, A RETURN WITH NO INFOR~ATION

IS MADE.

ON EXITI

~ AH I a

IF NO LIGHT PEN INFORMATION IS AVAILABLE

IAHI I IF LIGHT PEN IS AVAILABLE

(DH.DLI

(CHI

=

ROW.COLUMN OF CURRENT LIGHT PEN POSITION

=

RASTER POSI TlON

IBXI

=

BEST GUESS AT PIXEL HORIZONTAL POSITION i - - - - - - - - - - - - - - - - -- - - - - - - - - - -- - - - - - - - - - - - - - - - - - - -- - - - - - - - - - - - - - - - - - - - - -­

ASSU~E

DB

BX.CX,DX ARE DESTROYED

DSIDATA

3,3,5,5,3,3,3,4 I SUBTRACT_TABLE

WAIT FOR LIGHT PEN TO BE DEPRESSED

READ LPEN

MOV

MOV

ADD

'N

TEST

"Z

""P

PROC

AH.O

NEAR

OX ,(IoADDR 6845

OX.6 -

AL,OX

Al,004H

Vb V.A

; - - - - NOW TEST FOR LIGHT PEN TRIGGER

SET NO LIGHT PEN RETURN CODE

GET BASE ADDRESS OF 6845

POINT TO STATUS REGISTER

GET STATUS REGISTER

TEST LIGHT PEN SWITCH

GO IF' YES

NOT SET, RETURN

V6_A: TEST

JNZ

"MP

AL,2

VTA

V1

TEST LIGHT PEN TRIGGER

RETURN WITHOUT RESETTING TRIGGER

1-----

TRIGGER HAS BEEN SET. READ THE VALUE IN

V1A:

MOV AH,16 1 LIGHT PEN REGISTERS ON 6845

NOV

NOV

OUT

"MP

'NC

'N

MOV

DEC

'NC

MOV

OUT

'NC

"M"

MOV

INPUT REGISTERS POINTED TO BY AH, AND CONVERT TO ROW COLUMN IN IOXI

,

OX. (IoAODR &845

AL,AH

OX,Al

OX

..

-

AL.OX

CH.Al

OX

AH

,-.

AL,AH

DX,Al ox

AL.,OX

AH,CH

ADDRESS REG I STER FOR 6845

REG I STER TO READ

SET IT UP

1/0 DELAY

DATA REGISTER

GET THE VALUE

SAVE IN CX

ADDRESS REG I STER

SECOND DATA REGISTER

POINT TO DATA REGISTER

I/O DELAY

GET SECOND OAT A VALUE

AX HAS INPUT VALUE

VIDEO 1 5-159

IBM Personal Computer MACRO Assembler

VIDEOI - - - 0&/10/85 VIDEO DISPLAY 8105

Ve ... s,on 2.00

18&5

1866

1861 01A4 8A IE 0049

1868 01A8 2A FF

R

1869 01AA 2E: 8A 9F 0169 R

1810 01AF 28 C3

1611 0181 88 IE 004E R

1812 0185 01 E8

1813 0787 28 C3

1814 0189 19 02

1815 0188 28 CO

1816

1811

1818

1819 0180

1880 0180 81 03

1881 018F 80 3E 0049 R 04

1882 01C4 12 29

1683 01C6 80 3E 0049 R 01

1884 01CB 14 22

1885

1886

1667

1886 01CD 82 28

1889 01CF F6 F2

1890

1891

1892

1893 0101 8A E8

1894 0103 02 ED

1895 0105 8A DC

1896 0101 2A FF

1891 0109 80 3E 0049 R 06

1898 010E 15 04

1899 01EO Bl 04

1900 01E2 DO E4

1901 01E4

1902 01E4 03 E3

1903

1904

1905

1906 01E6 8A 04

1901 07E8 8A FO

1908 07EA CO EE 02

1909 01EO E8 12

1910

1911

1912

1913 01EF

1914 01EF F6 36 004A R

1915 01F3 8A FO

1916 01F5 8A 04

1911 01F1 02 EO

1918 01F9 8A E8

1919 01F8 8A DC

1920 07FO 32 FF

1921 01FF 03 E3

1922 0801

19230801 84 01

1924 0803

1925 0803 52

1926 0804 88 16 0063 R

1921 0808 83 C2 01

1928 0808 EE

1929 060C SA

1930 0800

1931 0600 50

1932 060E SF

1933 060F SE

1934 0810 IF

19350811 IF

1936 0612 IF

1931 0613 IF

1938 0614 01

1939 0815 CF

1940 0816

1941 0816

1942

1 -18

06-10-85

'0'2:

1-----

AX HAS THE VALUE READ IN FROM THE 6845

MOV

SUB

MOV

SUB

MOV

5HR

SUB

"NS

SUB

BL, ,,"CRT MODE

BH,BH -

BL,CS:VI [BX]

AX, BX

BX, ,,"CRT START

8X,1

AX,eX

V2

AX,AX

; MODE VALUE TO BX

; DETERMINE AMOUNT

TAKE IT AWAY

TO SUBTRACT

CONVERT TO CORRECT PAGE OR I GIN

IF POSITIVE, DETERMINE MODE

<0 PLAYS AS 0

DETERMINE MODE OF OPERATION

MOV eMP

"B eMP

"E

CL.3

.CRT MODE ,4

V4 -

@CRT MODE.1

V4 -

GRAPHICS MODE

OETERM I NE MODE

SET -8 SHTFT COUNT

DETERMINE IF GRAPHICS OR ALPHA

ALPHA_PEN

ALPHA_PEN

MOV

DIY

OL,40

OL

OETERM I NE GRAPH [C ROW POS I T I ON

DIVISOR FOR GRAPHICS

DETERMINE ROW(AL) AND COLUMNIAH)

AL RANGE 0-99, AH RANGE 0-39

t - - - - -

MOV

ADD

MDV

SUB eMP

"NE

MDV

SAL

CH,AL

CH.CH

8L,AH

SH,eH

_CRT MODE ,6

V3 ­

CL,4

AH, I

BX ,CL

OETERM I NE ALPHA CHAR POS I T I ON

MOV

MOV

5HR

J"P

OL,AH

OH,AL

OH,2

SHORT '0'5

ALPHA MODE ON LI GHT PEN

V4:

DIY

NOV

MOV

SAL

MOV

MOV

XOR

SAL

V5:

NOV

V6:

PUSH

MOV

ADO

OUT

POP

'0'1 ;

POP

POP

POP

POP

POP

POP

POP

POP

IRET

READ_LPEN

CODE ENDS

END

BP

01

51

OS

OS

OS

OS

ES

BYTE PTR @CRT_COLS

DH,AL

DL,AH

AL,CL

CH,AL

8L.AH

BH,BH

8X ,eL

AH,I

OX

DX,@ADDR_6845

OX,1

DX,AL

OX

ENDP

SAVE ROW VALUE IN CH

-2 FOR EVEN/ODD FIELD

COLUMN VALUE TO BX

MULTI PLY BY 8 FOR MED I UM RES

DETERM I NE MED I UM OR H! GH RES

NOT HIGH RES

SHIFT VALUE FOR HIGH RES

COLUMN VALUE TIMES 2 FOR HIGH RES

NOT HIGH RES

MULTIPLY--16 FOR HIGH RES

COLUMN VALUE FOR RETURN

ROlfi' VALUE o I V I DE 8Y 4 FOR VALUE IN 0-24 RANGE

LIGHT _PEN_RETURN_SET

ALPHA PEN

DETERMINE ROW,COLUMN VALUE

ROWS TO OH

CeLS TO OL

MULTIPLY ROWS" 8

GET RASTER VALUE TO RETURN REG I STER

COLUMN VALUE

TO BX

LIGHT PEN RETURN SET

INDICATE EVERY THING SET

LIGHT PEN RETURN

SAVE RETURN VALUE liN CASEI

; GET BASE ADDRESS

PO I NT TO RESET PARM

ADDRESS, NOT DATA, IS IMPORTANT

RECOVER VALUE

RETURN_NO_RESET

I DISCARD SAVED BX,CX,DX

5-160 VIDEO 1

"

16

11

18 I.

ZO

ZI

ZZ

Z3

Z'

Z5

3Z

33

3.

35

36

31

Z6

Z1

Z8

Z.

30

31

38

3. .,

• 0

8

•

10

II

IZ

13

•

3

5

Z

I

6

1

0000

IBt.4 Pllraonat Computer MACRO Aaaelllbler

BIOS - - - - 06/10/85 BIOS ROUTINES

Vllrsion 2.00

80

"

83

8.

85

8.

81

68

6.

10

11

1Z

13

14

15

16

"

6'

6S

66

61

'6

"

49

50

51

52

53

54

55

56

51

58

5.

60

0000

0000 FB

0001 IE

0002 E8 0000 E

0005 AI 0013 R

0008 IF

0009 CF

OOOA

88

8.

.,

.Z

93

94

95

96

97

98

99

OOOA

OOOA FB

OOOB IE

OOOC E8 0000 E

OOOF AI 0010 R

0012 IF

0013 CF

100 0014

EQU I Pt.4ENT 1 PROC FAR

STI

PUSH as

CALL

"OV

POP

IRET

005

~~,IlIEQUIP

_FLAG

EQU I Pt.4ENT_l ENDP

I - I

06-10-85

PAGE 116,121

TITLE BIOS - - - - 06/10/85 BIOS ROUTINES

.286C

.LIST

CODE SEGt.4ENT BYTE PUBL I C

PUBL I C EQU I Pt.4ENT I

PUBLIC t.4Et.40RY SIZE DET ,

PUBLIC Nt.4I_INT_, ­

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

C8042:NEAR

Ct.40S READ:NEAR

01 I NEAR

02 I NEAR

D2A1NEAR

DDSINEAR

OBF 42:NEAR

PRT-HEXINEAR

PRT-SEG:NEAR

P _t.4SGlNEAR

POST SEND 8042 COt.4t.4ANO ROUTINE

READ Ct.40S LOCATION ROUTINE

~PARITY CHECK I ~ t.4ESSAGE

~PARITY CHECK 2~ t.4ESSAGE

" ?????" UNKNOWN ADDRESS t.4ESSAGE

LOAD IDS) WITH DATA SEGMENT SELECTOR

POST WAIT 8042 RESPONSE ROUTINE

DISPLAY CHARACTER ROUTINE

01 SPLA Y FIVE CHARACTER ADDRESS ROUT I NE

01 SPLA Y t.4ESSAGE STR I NG ROUTI ~E

; - - INT 12 H ---------------------------------------------------------------­ t.4Et.40RY SIZE DETERt.4INE

THIS ROUTINE RETURNS THE At.40UNT OF t.4EMORY IN THE SYSTEt.4 AS

DETERMINED BY THE POST ROUTINES. (UP TO 640Kl

NOTE THAT THE SYSTEf,j MAY NOT BE ABLE TO USE I fa MEMORY UNLESS

THERE I S A FULL COMPLEMENT OF 512K BYTES ON THE PLANAR.

INPUT

NO REG I STERS

THE .MEMORY SIZE VARIABLE IS SET QURING POWER ON DIAGNOSTICS

ACCORDING TO THE FOLLOWING ASSUMPTIONS;

I. CONFIGURATION RECORD IN NON-VOLATILE MEMORY EQUALS THE ACTUAL

MEMORY SIZE INSTALLED.

2. ALL INSTALLED MEMORY IS FUNCTIONAL. IF THE MEMORY TEST DURING

POST INDICATES LESS, THEN THIS VALUE BECOMES THE DEFAULT.

IF NON-VOLATILE t.4EMDRY IS NOT VALID (NOT INITLALIZED DR BATTERY

FAILURE) THEN ACTUAL t.4EMORY DETERMtNED BECOMES THE DEFAULT •

3. ALL MEMORY FROt.4 0 TO 640K MUST BE CONT I GUOUS.

OUTPUT

;

I AX) ; NUMBER OF CONT I GUOUS 'K BLOCKS OF MEMORY -----

- - - -

-

-

---

-

-

--------

- -

- -

---------------------------

- -- - -

-

- - - - - - - - - -

-

- - -­

ASSUME CS:CODE,DS:DATA

MEMORY SIZE OET I PROC FAR

ST , -

PUSH

CALL

MOV

POP

OS

DOS

AX, .MEMORY SIZE

OS

IRET t.4Et.40RY_SI ZE_DET_I ENDP

-

I NTERRUPTS BACK ON

SAVE SEGMENT

ESTABLISH ADDRESSING

GET VALUE

RECOVER SEGt.4ENT

RETURN TO CALLER

INT II H - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ­

EQU I PMENT DETERt.41 NAT I ON

THIS ROUTINE ATTEMPTS TO DETERt.4INE WHAT OPTIONAL

DEVICES ARE ATTACHED TO THE SYSTEM.

INPUT

NO REGI STERS

THE .EQUIP FLAG VARIABLE IS SET DURING THE POWER ON

DIAGNOSTICS USING THE FOLLOWING HARDWARE ASSUt.4PTlONS:

PORT 03FA

=

INTERRUPT 10 REGISTER OF 8250 IPRlt.4ARY)

02FA'" INTERRUPT 10 REGISTER OF 8250 ISECONDARY)

81TS 1-3 ARE ALWAYS 0

PORT 0376

=

OUTPUT PORT OF PRINTER IPRIt.4ARYI

0216 ; OUTPUT PORT OF PRINTER (SECONDARY)

03BC

=

OUTPUT PORT OF PRINTER (MONOCHROME-PRINTER)

OUTPUT lAX) IS SET, BIT SIGNIFICANT, TO INDICATE ATTACHED I/O

BIT 15,14

=

NUMBER OF PRINTERS ATTACHED

BIT 13 ; INTERNAL t.400Et.4 INSTALLED

BIT 12 NOT USED

BiT I f , !O,9 ; NUt.4BER OF RS232 CARDS ATTACHED

BIT a

=

NOT USED

BIT 1,6

BIT 5,4

=

NUt.4BER OF DISKETTE DRIVES

00;1,01=2 ONLY !F""BIT 0::: 1

=

INITIAL VIDEO t.4DOE

00 UNUSED

01 40X25 BW US I NG COLOR CARD

10 80X25 8W USING COLOR CARD

II aOX25 BW USIN9 BW CARD

BIT 3 = NOT USED

BIT 2

=

NOT USED

81T 1 ; MATH COPROCESSOR

BIT 0 = 1 (IPL DISKETTE I NSTALLEDI

NO OTHER REG I STERS AFFECTED

ENTRY PO I NT FOR ORG OF84DH

I NTERRUPTS BACK ON

SAVE SEGt.4ENT REG I STER

EST ABL J SH ADDRESS I NG

GET THE CURRENT SETT I NGS

RECOVER SEGt.4ENT

RETURN TO CALLER

BIOS 5-161

IBM Person;;,! COlllputer MACRO Asselllbler

8105 ----06/10/85 8105 ROUTINES

Version 2.00

101

102

103

104

105

106

101

108

109

110

I I I

112

113

114 0014

115

116

001450

117 0015 E4 61

1 18 0017 A8 CO

119 0019 75 07

120

121 001880 00

122 0010 E8 0000 E

123 0020 58

124 0021 CF

125

126

127 0022

128 0022 50

129 0023 80 80

130 0025 E& 70

131 0027 80 AD

132 0029 E6 0000 E

133 002C E8 0000 E

134 002F 84 00

135

136

0031 AD 0049 R

0034 CD 10

131

138

139

140 0036 58

141 0037 8E 0000 E

142 003A A8 80

143 003C 74 05

144

145 003E 50

146 003F E6 0000 E

147 0042 5B

148 0043

149 0043 8E 0000 E

150

151

0046 AS 40

0048 74 03

152 0041. E8 0000 E

153

154

155

156 0040

157 0040 E4 61

158 004F OC DC

159 0051 E6 61

160 0053 24 F3

161 0055 E6 61

162

163 0057 FC

164 005B 28 02

165 005A 28 F6

166 005C E4 61

167 005E A8 CO

168 0060 75 19

169

110

111

172 006288 IE 0013 R

173 0066

174 0066 BE DA

175 0068 89 8000

176 0068 F3/ AD

I T7 0060 E4 61

17B 006F A6 CO

179 0071 75 10

180

181 0073 80 C6 10

182 0076 83 E8 40

183 0079 T7 E8

184 0078

185 0078 8E 0000 E

186 007E E8 0000 E

187 OOBI FA

188 0082 F4

189

190 0083

191 0083 E8 0000 E

192 0086 80 28

193 0088 E8 0000 E

194 0088 BO 53

195 0080 E8 0000 E

196 0090 80 29

,97 0092 E8 0000 E

198 0095 FA

199 0096 F4

200

20 I 0097

202

203 0097

204

PACiE

; - - HARDWARE INT 02 H -­ I NMI LEVEL) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ­

NON-MASKA8L.E INTERRUPT ROUTINE (REAL MODE) nus

ROUTINE WILL PRINT A "PARITY CHECK 1 OR 2" MESSAGE AND ATTEMPT

TO FINO THE STORAGE LOCATION IN 8ASE 640K CONTAINING THE 8AD PARITY.

IF FOUND, THE SEGMENT ADDRESS WILL BE PRINTED.

CAN BE FOUND (INTERMITTENT READ PR08LEM) 11117

WHERE THE ADDRESS WOULD NORMALLY GO.

PAR 1 TY CHECK 1

PAR I TY CHECK 2

=

PLANAR 80ARD MEMORY FA I LURE.

=

OFF PLANAR 80ARD MEMORY FA I LURE.

NM liNT , PROC

-PUSH AX

NEAR

IN

TEST

.JNZ

MOV

CALL

POP

IRET

AL,PORT 8

AL,PARITY ERR

NMI_' -

AL,CMOS REG D

CMOS READ -

A X ­

IF NO PARITY ERROR

WILL 8E DISPLAYED

I SAVE ORIGINAL CONTENTS OF lAX)

READ STATUS PORT

PARITY CHECK OR I fO CHECK?

GO TO ERROR HALTS I F HARDWARE ERROR

ELSE 11 LEAVE NM! ON

TOGGLE NM I US I NG COMMON READ ROUT J NE

RESTORE ORIGINAL CONTENTS OF (AXI

EX I T NMI HANDL.ER 8ACK TO PROGRAM

NMI_' :

PUSH

"OV

OUT

MOV

CALL

CALL

MOV

MOV

INT

AX

AL, CMOS REG D+NM I

CMOS PORT, AL

AL.oTs K8D

C6042 -

DOS

AH,O

AL, PCRT MODE

10H -

HARDWARE ERROR

SAVE INITIAL CHECK MASK IN (Al)

MASK TRAP INMII INTERRUPTS OFF o

I SABLE THE KEYBOARD

SEND COMMAND TO ADAPTER

ADORES S OAT A SEGMENT

INITIALIZE AND SET MODE FOR VIDEO

GET CURRENT MODE

CALL VIDEO_IO TO CLEAR SCREEN

01 SPLA Y "PAR I TY CHECK 1" ERROR MESSAGES

POP

MOV

TEST

JZ

AX

SI,DFFSET 01

AL,PAR!TY CHECK

NMI_2 -

RECOVER I NIT I AL CHECK STATUS

PLANAR ERROR, ADDRESS "PARITY CHECK I"

CHECK FOR PLANAR ERROR

SKIP IF NOT

PUSH

CALL

POP

AX

P MSG

AX

SAVE STATUS

DISPLAY "PARITY CHECK I" MESSAGE

AND RECOVER STATUS

MOV

TEST

JZ

CALL

SI,OFFSET 02

AL,IO CHECK

NMI 3­

P _MSG

ADDRESS OF ~PARITY CHECK 2~ MESSAGE

I/O PAR I TY CHECK ?

SK 1 P J F CORRECT ERROR D I SPLAYED

DISPLAY "PARITY CHECK 2" ERROR

TES T FOR HOT NM I ON PL.ANAR PAR I TY LINE

NMI 3:

; - - - - ­

IN

OR

OUT

AND

OU1

CLO

SUS

SUS

IN

TEST

JNZ

AL,PORT B

AL,RAM PAR OFF

PORT 8~AL ­

AL, RAM PAR ON

PORT_B~AL ­

TOGGLE PAR I TY CHECK ENA8LES

TO CLEAR THE PEND I NG CHECK

OX.DX

51,51

AL,PORT 8

AL,PARITY ERR

NMI_5 -

SET 0 I RECT I ON FLAG TO INCREMENT

PO I NT (OX) AT START OF REAL MEMORY

SET 1511 TO START OF 105:1

READ CURRENT PARITY CHECK LATCH

CHECK FOR HOT NM I SOURCE

SKIP IF ERROR NOT RESET 10ISPL.AY ??11

SEE IF LOCATION THAT CAUSED PARITY CHECK CAN BE FOUND IN BASE MEMORY

"OV 8X,.MEMORY_SIZE ; GET BASE MEMORY SIZE WORD

"OV

MOV

REP

IN

TEST

JNZ

ADO

5U8

JA

MOV

CALL eLi

HLT

DS,DX

CX,4000H02

LODSW

AL,PORT 8

AL,PARITY ERR

NMI_6 -

DH,010H

8X, 1&0°4

NM1_4

SI,OFFSET D2A

P _MSG

PO I NT TO 64K SEGMENT

SET WORD COUNT FOR 64 KB SCAN

READ 64 KB OF MEMORY

READ PARITY CHECK LATCHES

CHECK FOR ANY PAR I TY ERROR PEND I NG

GO PRINT SEGMENT ADDRESS IF ERROR

PO I NT TO NEXT 64K BLOCK

DECREMENT COUNT OF 1024 8YTE SEGMENTS

L.OOP T1 LL ALL 64K SEGMENTS DONE

PRINT ROW OF 11111 IF PARITY

CHECK COULD NOT BE RE-CREATED

HALT SYSTEM

CALL

"OV

CALL

HOV

CALL

HOV

CALL

CLI

HL 1

NMI INT_I ENDP

CODE ENDS

END

PRT SEG

AL,'( ,

PRT HEX

AL,'S'

PRT HEX

AL,') ,

PRT_HEX

PR 1NT SEGMENT VALUE liN OX)

PRINT (51

HAL T SYSTEM

5-162 BIOS

15

I .

17

18

19

20

21

22

23

24

25

Z'

27

28

29

30

31

32

33

34

35

3.

31

38

39

4

5

6

7

I

2

3

8

9

10

II

IZ

13

I .

.. 40

41

42

43

'5

.6

63

6.

65

••

61

.8

69

10

11

1Z

13

14

88

89

90

91

92

93

9.

95

96

91

98

99

100

75

76

77

18

19

80

8 I

82

83

84

85

86

81

41

48

49

50

51

52

53

54

55

5.

57

58

59

60

61

62

0000

IBM P ... so"al Compute .. MACRO Ass.mbl ... V."SIO" 2.00

BIOSI - - - 06/10/85 INTERRUPT ISH BIOS ROUTINES

103

104

105

106

101

108

109

110

I I I

\-1

06-10-85

PAGE 118,121

TITLE BIOSI - - - 06/10/85 INTERRUPT ISH 8[05 ROUTINES

.286C

.L I ST

CODE SEGMENT BYTE PUBL I C

PUBL I C CASSETTE 10 I

PUBL I C GATE A20-

PUBL I C SHUT9

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

CMOS READ: NEAR

CMOS-WR I TE: NEAR

CONF-TBL: NEAR

DDS:NEAR

PROC _SHUTDOWN: NEAR

; READ CMOS LOCA T I ON ROUT I NE

I WRITE CMOS LOCATION ROUTINE

; SYSTEM/BIOS CONFIGURATION TABLE

; LOAD {oS) WITH DATA SEGMENT SELECTOR

; 60286 HARDWARE RESET ROUTINE

INT 15 H - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ­

INPUT CASSETTE I/O FUNCTIONS

(AH) = OOH

(AH)

=

OIH

(AH)

(AH)

=

02H

= 03H

RETURNS FOR THESE FUNCTIONS ALWAYS IAHI = 86H. CY

[F CASSETTE PORT NOT PRESENT

=

1)

INPUT UNUSED FUNCT IONS

(AH)

=

04H THROUGH 1FH

RETURNS FOR THESE FUNCTIONS ALWAYS (AHI

=

86H, CY

=

1)

(UNLESS INTERCEPTED BY SYSTEM HANDLERS)

NOTE: THE KEYBOARD INTERRUPT HANDLER [NTERRUPTS WITH AH=4FH

EXTENS IONS

(AH)

=

80H DEVICE OPEN

IBX) ::: DEVICE ID

(CX) = PROCESS ID

(AHI = 81H DEVICE CLOSE

(BX) '" DEV[CE

ICX) to

= PROCESS 10

{AHI ::: 82H PROGRAM TERMINATION

(aXI = DEVICE 10

{AHI

=

83H EVENT WA IT

(ALl ::: OOH SET INTERVAL

(ES:BX) POINTER TO A BYTE IN CALLERS MEMORY

THAT WILL HAVE THE HIGH ORDER 81T SET

AS SOON AS POSSIBLE AFTER THE INTERVAL

EXPIRES.

(CX,OX) NUMBER OF MICROSECONDS TO ELAPSE BEFORE

POSTING.

{ALI = OIH CANCEL

(AH)

IAH)

(AHI

(AHI

(AHI

(AHI

(AHI

(AH)

RETURNS: CARRY IF AL 'NOT ::: OOH OR 01 H

OR IF FUNCTION AL:::O ALREADY BUSY

84H .JOYSTICK SUPPORT

(OX) OOH READ THE CURRENT SWITCH SETTINGS

RETURNS AL ::: SWITCH SETTINGS (BITS 7-41

(DXI '" OIH READ THE RESISTIVE INPUTS

RETURNS AX

=

A (.) VALUE

BX ex :::

B(.I VALUE

OX

=

A(y) VALUE

=

Bly! VALUE

85H SYSTEM REQUEST KEY PRESSED

(AL) ::: OOH MAKE OF KEY

(ALI ::: 01H BREAK OF KEY

81H

88H

89H

90H

9IH

WA IT

(CX,DX} NUMBER OF MICROSECONDS TO ELAPSE BEFORE

RETURN TO CALLER

MOVE BLOCK

(CX I NUMBER OF WORDS TO MOVE

(ES:sl) POINTER TO DESCRIPTOR TABLE

EXTENDED MEMORY SIZE DETERM] NE

PROCESSOR TO VIRTUAL MODE

DEV I CE BUSY LOOP

(A.L) SEE TYPE CODE

I NTERRUPT COMPLETE FLA.G SET

( AL I

OOH

TYPE CODE

-> 7FH

SEA I ALLY REUSABLE DEV ICES

BOH

COH

OPERATING SYSTEM MUST SERIALIZE ACCESS

->

BFH

REENTRANT DEVICES; ES:8X IS USED TO

DISTINGUISH DIFFERENT CALLS (MULTIPLE 110

CALLS ARE ALLOWED S] MUL TANEOUSLY)

-> FFH

WA I T ONLY CALLS -THERE I S NO

COMPLEMENT ARY • POST' FOR THESE WA I TS.

THESE ARE TIMEOUT ONLY. TIMES ARE

FUNCTION NUMBER DEPENDENT.

TYPE DEseR I PT I ON TIMEOUT

DOH ::: DISK

OIH ::: DISKETTE

02H

=

KEYBOARD

80H ::: NETWORK

ES :8X --> NCB

FDH ::: 0 I SKETTE MOTOR START

FEH ::: PRINTER

YES

YES

NO

NO

YES

YES

BIOS1 5-163

I BM Pit,. son a I CO"'putll" MACRO A •••",b I.,. V.,. s j on

BIOSI ---06/10/65 INTERRUPT 15H BIOS ROUTINES

2.00

112

113

114

115

II.

117

118

11.

120

121

122

123

124

125

12.

127

128

12'

130

131

132

133

134

135

13. 0000

137 0000 FB

138 000 I 60 FC 80

13' 0004 72 4E

140 0006 60 FC CO

141 0009 14 ~I

142 OOOB 60 EC 80

143 OOOE OA E4

144 0010 14 48

145 0012 FE CC

14. 0014 74 44

141 0016 FE CC

148 0016 14 40

14. OOlA FE CC

150 OOIC 74 47

151 ODIE FE CC

152 0020 75 03

153 0022 E9 0000 R

154 0025

155 0025 FE CC

IS. 0021 74 31

151 0029 FE CC

158 002B 14 01

15' 0020 FE CC

,.0 002F 75 06 '.,

,.2

0031 E9 OlCA R

163 0034 E9 016A R

'.4

'.5

I ••

0037 FE CC

,.7 0039 75 03

'.8

003B E9 03EE R

I . '

170 003E FE CC

171 0040 75 03

172 0042 E9 03F A R

173

174 0045 60 EC 01

175 0046 15 03

17. 004A E9 0483 R

177

178 0040 FE CC

17. 004F 75 03

180 0051 E9 0461 R

181

182 0054 B4 86

183 0056 F9

184 0051

185 0057 CA 0002

18.

187

188 005A

18.

190 005A

191

,.2 005A

" 3

194 OOSA

'.5 005A EB FB

I •• 005C

197

198 005C

I •• 005C OE

200 0050 07

201 OOSE BB 0000 E

202 0061 32 E4

203 0063 EB F2

204 0065

205

20. 0065

207

208 0065 IE

20' 0066 E6 0000 E

210 0069 OA CO

211 006B 74 08

212 0060 FE C8

213 006F 14 45

21. 0071 IF

215 0072 F9

21. 0013 EB E2

217

218 0015

21' 0075 FA

220 0016 F6 06 OOAO R 01

221 0018 74 as

222 0010 FB

223 001E IF

224 001F F9

225 OOBO EB os

PAGE

ASSUME CS:COOE

PROC CASSETTE ID I sn-

CNP

"a

CNP

"E sua

DR

"Z

DEC

"Z

DEC

"Z

DEC

"Z

DEC

"NZ

"NP

NOT_JOYSTICKI

DEC

"Z

DEC

"Z

DEC

"NZ

"NP

FAR

AH,080H

CI

AH,OCOH

CONF FARMS

AH,OBOH

AH,AH

DEV

-

OPEN

AH

DEV

CLOSE

AH

PROG_ TERM

AH

EVENT_WAIT

AH

ND7

JOYSTICK

"0' STICK

AH

SYS_REQ

AH

CI

AH

CI

A a

BLOCKMOVE

CI =

CI F,

"NP

DEC

"N'

"NP

DEC

"N'

"NP

SUB

"N'

"NP

DEC

"N'

"NP

NOV

STC

WAIT

AH

CI C

EXT_MEMORY

AH

CI D

SET_VMOoE

AH, B6H

RET

AH,l

CI E

DEVICE_BUSY

AH

CI

INT_CqMPLETE

DEV_OPEN: oEV_CLOSE:

PROG_TERMI

SYS REQ:

.JMP

CASSETTE_IO_I

CONF FARMS

PUSH

PDP

NOV

XOR

""P

CONF _PARMS

CI F

ENDP

PROC

CS

NEAR

ES ex,

OFF SET CONF TBL

AH,AH -

CI F

ENDP

EVENT WA I T

-

PROC

ASSUME oS:oATA

PUSH

CALL

OS

DDS

OR

"'

"'

5TC

NEAR

AL,AL

EVENT WA IT 2

AL -

EVENT WAIT 3

OS -

CI_F "NP

EVENT WAIT 2:

CLI

TEST

"Z

STI

PDP

STC

"NP

(lRTC WAIT FLAG,OI

EVEN'i'_WAIT_'

OS

1-2

06-10-85

(AH}

=

COH RETURN CONFIGURATION PARAMETERS POINTER

RETURNS

(AH) = OOH AND CV: 0 (IF PRESENT ELSE 66 AND CY= 1 )

(ESIBX)'

=

PARAMETER TABLE ADDRESS POINTER

WHERE:

OW

DB

DB

DB

Da

Da

Da

Da

Da

8

MODEL BYTE

TYPE BYTE

BIOS:LEVEL

LENGTH OF FOLLOW I NG TABLE

SYSTEM MODEL BYTE

SYSTEM MODEL TYPE BYTE

BIOS REVISION LEVEL

, 0000000

=

OMA CHANNEL 3 USE BY BIOS

01000000 = CASCADED INTERRUPT LEVEL 2

00100000 = REAL TIME CLOCK AVAILABLE

00010000

=

KEYBOARD SCAN CODE HOOK IAH

RESERVED

RESERVED

RESERVEO

RESERVED

ENABLE INTERRUPTS

CHECK FOR RANGE

RETURN IF 00-lFH

CHECK FOR CONF I GURAT I ON PARAMETERS

BASE ON 0

~ DEVICE OPEN

DEV (CE CLOSE

PROGRAM TERMINATION

EVENT WA IT

.JOYSTICK BIOS

SYSTEM REQUEST KEY

WAIT

MOVE BLOCK

WAIT

; GO GET THE EXTENOEO MEMORY

CHECK FOR FUNCT I ON 89H

SWAP TO V I RTUAL MOOE

CHECK FOR FUNCT I ON 90H

GO IF NOT

CHECK FOR FUNCT I ON 8BH

GO IF NOT

SET BAD COMMAND

SET CARRY FLAG ON

FAR RETURN EXIT FROM ROUTINES

; NULL HANDLERS

RETURN

GET CODE SEGMENT

PLACE I N SELECTOR PO INTER

GET OFFSET OF PARAMETER TABLE

CLEAR AH AND SET CARRY OFF

EX I T THROUGH COMMON RETURN

SAVE

GO I F ZERO

CHECK IF 1

RESTORE DATA SEGMENT

SET CARRY

EXIT

NO I NTERRUPTS ALLOWED

CHECK FOR FUNCT I ON ACT J VE

ENABLE INTERRUPTS

SET ERROR

RETURN

5-164 BIOSt

IB~ Personal Computer ~ACRO Assembler VerSion 2.00

B[OSI ~-~ 06/10/85 INTERRUPT 15H BrOS ROUTINES

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285 0000

286 0000

287 0001 8B C2

288 0003 BA 020 I

289 0 006 OA CO

290 0008 74 OB

291 OODA FE C8

292 OODC 74 OC

293 OODE E9 0054 R

294 OOEI

295 OOE 1 FB

296 00E2 E9 0057 R

297

298 DOES

299 ODES EC

300 00E6 24 FO

30 lODES EB F7

302

303 OOEA

304 OOEA B3 0 I

305 OOEC E8 0108 R

306 OOEF 51

307 OOFO B3 02

308 00F2 ES 0108 R

309 00F5 51

310 00F6 B3 04

311 00F8 E8 0108 R

312 OOFS 51

313 OOFC B3

31400FEE80108R

315 0 I 0 I 8B 01

316 0 I 03 59

317 0 I 04 5B

318 0 I 05 58

319 0 I 06 EB 09

320

321 0 I 08

322 0 I 08 52

323 0 I 09 FA

324 0 I OA BO

325 0 I OC E6 43

326 0 I OE EB 00

327 0 I 10 E4 40

328 0112 EB 00

329 0114 8A EO

330 0 116 E4 40

331 0 118 86 EO

332 01 I A 50

333 0 I I B 89 04FF

334 01 IEEE

335 011 F EB 00

336 0121

337 0121 EC

338 0122 84 C3

339 0124 EO F8

226

227 0082

228 0082 E4 A I

229 0084 E8 00

230 00B6 24 FE

231 OOBB E6 A I

232 OOBA 8C 06 009A R

233 008E 89 IE 009B R

234 0092 89 OE 009E R

235 0096 89 15 009C R

235 009A C5 06 OOAO R 01

237 009F 80 08

238 OOA I E8 0000 E

239 00A4 24 7F

240 00A6 DC 40

241 00A8 50

242 00A9 8A EO

243 OOAB 80 08

244 OOAo E8 0000 E

245 OOBO 58

245 OOBI IF

247 00B2 F8

248 00B3 F8

249 00B4 EB AI

250

251

252

253 00B6

254 00B6 50

255 00B7 FA

255 00B8 88 OBOB

257 OOBB EB 0000 E

258 OOSE 24 8F

259 OOCO 86 EO

260 00C2 E8 0000 E

261 00C5 58

262 00C6 C6 06 OOAO R 00

263 00C8 F8

254 OOCC IF

255 OOCO F8

255 OOCE E8 87

257

268

269

IN

oMP

AND

OUT

MOV

MOV

MOV

MOV

MOV

MOV

CALL

AND

OR

PUSH

MDV

MOV

CALL

POP

POP

STI

CLC oMP

AL,rNTBOI

' . 2

AL,OFEH

[NTBOI,AL

'lIUSER FLAG SEG,ES

Il'IUSER

::::FLAG~BX

Il'IRTC _HJGH,CX

Il'IRTC _LOW,DX

Il'IRTC _WAIT_FLAG,OI

AL, C~OS_REG_B

C~OS READ

AL.01FH

AL,040H

AX

AH,AL

AL .C~OS REG_B

C~OS

-

AX

WRITE

DS

STI

MOV

MDV

OR

JZ

DEC

OZ oMP

OOY -

I,

STI oMP

OOY -

2,

IN

ANO oMP

OOY -

3,

MOV

CALL

PUSH

MOV

CALL

PUSH

MOV

CALL

PUSH

MDV

CALL

MDV

POP

POP

POP oMP

PROC

AX,DX

DX,20 1 H

AL,AL

JOY 2

AL

OOY 3

CI

NEAR

C I F

AL,DX

AL,OFOH

OOY I

BL, I

TEST_CORD ex

BL,2

TEST_CORD ex

BL,4

TEST_CORD ex

BL,B

TEST CORD

DX,CX

CX

8X

AX

OOY I

TEST CORD

PUSH

CLI

MOV

OUT oMP

IN oMP

MOV

IN

XCHG

PUSH

MOV

PROC NEAR

OX

ALtO

TIMER+3,AL

' . 2

AL, T I ~ER

' . 2

AH,AL

AL. TIMER

AH,AL

AX

CX,4FFH

OUT

JMP

TEST CORD I,

-

IN

TEST oX,AL

' . 2

AL,DX

AL,BL

LOOPNZ TEST CORD I

1-3

06~ I 0~85

ENSURE I NTERRUPT UNMASKED

SET UP TRANSFER TABLE

SET ON FUNCT[ON ACTIVE SWITCH

ENABLE PIE

READ CMOS LOCA T I ON

CLEAR SET

ENABLE PIE

SAVE AH

PLACE DATA INTO DATA REGISTER

ADDRESS ALARM REG I STER

PLACE DATA [N AH [NTO ALAR~ REG [S TER

RESTORE AH

ENABLE INTERRUPTS

CLEAR CARRY

CANCEL

EVENT_WAIT 3,

PUSH

CLI

MOV

CALL

AND

XCHG

CALL

PDP

MDV

STI

PDP

CLC oMP

AX, X·CMOS_REG_B

C~OS READ

AL,OBFH

AH,AL

C~OS

AX

-

WR [TE

OS

SAVE

D[SABLE INTERRUPTS

TURN OFF PIE

GET ALARM REGISTER

CLEAR PIE

PLACE INTO WR I TE REG I 5 TER

WR I TE BACK TO ALARM REG I STER

RESTORE AH

SET FUNCT ION ACT I VE FLAG OFF

ENABLE INTERRUPTS

RESTORE DATA SEGMENT

SET CARRY OFF

RETURN

EVENT WAIT

JOY STICK

ENOP

---~----------- - - - - - - - - - - - - - - ­

THIS ROUTINE WILL READ THE ,JOYSTICK PORT

INPUT

10XI =0 READ THE CURRENT SWITCHES

RETURNS IALI= SWITCH SETTINGS IN BITS

IDX)=I READ THE RESISTIVE INPUTS

RETURNS IAXI=AI~I VALUE

IBXI::;;Alyl VALUE

ICXI=81~1 VALUE

IDXI=Bly) VALUE

CY FLAG ON I F NO ADAPTER CARD OR I NV AL I 0 CALL

I NTERRUPTS BACK ON

GET SUB FUNCT I ON CODE

ADDRESS OF PORT

READ SW ITCHES

READ RESISTIVE [NPUTS

GO TO ERROR RETURN

GO TO COMMON RETURN

STR I P UNWANTED BITS OFF

FINISHED

SAVE A(X) VALUE

SAVE SIX) VALUE

SAVE 81Y) VALUE

GET 81XI VALUE

GET AIY) VALUE

GET AIXI VALUE

FIN I SHED RETURN

SAVE

BLOCK INTERRUPTS WHILE READING

SET UP TO LATCH T I MER a

READ LOW BYTE OF T I MER 0

READ HIGH BYTE OF TI~ER 0

REARRANGE TO HIGH. LOW

SAVE

SET COUNT

FIRE TI~ER

READ VALUES

HAS PULSE ENDED 7

BIOS1 5-165

IBM P.,.'sonal Comput.r MACRO A• • •mel.r Version 2.00

810S1 - - - 06/10/85 INTERRUPT ISH 810S ROUTINES

1-'

06-10-85

340 0126 83 F9 00

341 0129 59

342 012A 75 04

343 012C 28 C9

344 012E E8 28

345 0130

346 0130 80 00

341 0132 E6 43

346 0134 E8 00

34. 0136 E4 40

350 0138 8A EO

351 013A EB 00

352 013C E4 40

353 013E 86 EO

354

355 0140 3B C8

356 0142 13 OB

351 0144 52

356 0145 8A FFFF

35.

360 0148 2B DO

361 014A 03 CA

362 014C SA

363 0140 E8 02

364

36S 014F

366 014F 2B C8

361 0151

366 0151 81 EI IFFO

30' 0155 CI E9 04

310

311 0158

312 0158 F8

313 0159 8A 0201

314 015C 51

315 015D 50

316 o

15E 89 04FF

311 0161

316 0161 EC

31' 0162 A8 OF

360 0164 EO FB

361

362 0166 58

363 0167 59

364 0168 SA

385

386 0169 C3

361

366 o

16A

016A 36'

3.,

016A

3'2 016A IE

3'3 0168 E8 0000 E

3'4 016E F6 06 OOAO R 01

3'S 01731405

3'0 0175 IF

3"

0176 F9

3.6 0171 E9 0057 R

3" 017A

400 017A FA

401 0178 E4 AI

402 0170 E8 00

403 o

17F 24 FE

404 0181 E6 Al

405 01838C IE 009A R

400 0187 C7 06 0098 R OOAO R

401 0180 89 OE 009E R

406 0191 89 16 009C R

40. 0195 C6 06 OOAO R 01

410 o

19A 50

411 019888 0808

412 o

19E E8 0000 E

413 01AI 24 7F

"4

01A3 OC 40

415 01 AS 86 EO

416 01 A 7 E8 0000 E

411 OIAA 58

416

41'

420

421

...

01A8 F8

01AC 51

423 01 AD 52

424 01AE 87 Dl

425 OIBO

420 0180 F6 06 OOAO R 80

421

...

0lB5 EI F9

0187 75 05

0189 83 EA 01

430 018C 13 F2

431 018E

432 01BE C6 06 OOAO R 00

433 0lC3 SA o

IC4 59 '34

'35 0lC5 IF

'30 o

IC6 F8

431 0lC7 E9 0057 R

436

'3'

OICA

JNZ

SUB

J"P

TEST CORD 2;

-

M~V

OUT

JMP

IN

MOV

JMP

IN

XCHG

SUB

ADD

POP

JMP

TEST CORD 4:

508

TEST CORD

-

5:

AND

S"R

POP

POP

POP

PROC

PUSH

CALL

TEST

JZ

POP

STe

JMP eLI

IN

J"P

AND

OUT

MOV

MOV

MOV

MOV

NOV

PUSH

NOV

CALL

AND

OR

XCHG

CALL

POP

WAIT_2:

511

PUSH

PUSH

XCHG

TEST

LOOPZ

JNZ

SUB

JNC

MOV

POP

POP

POP

CLC

JMP

CX,O ex

SHORT TEST CORD 2

CX,CX -

SHORT TEST_CORD_3

AL,O

TIMER+3,AL

"2

AL,TIMER

AH,AL

"2

AL,TIMER

AH.AL

CX,AX

TEST CORD

DX -

DX,-I

4

TEST CORD

-

3:

Si'l

MOV

PUSH

PUSH

MOV

DX,20lH cx

AX

CX,4FFH

TEST CORD 6:

IR

AL.OX

TEST AL,OFH

LOOPNZ TEST_CORD_6

TEST CORD

JOY_STICK

WAIT

I·-~--

CMP

JAE

PUSH

MOV

RET

NO I NTERRUPTS ALLOWED

ENSURE INTERRUPT UNMASKED AL,INTBO'

'.2

AL,OFEH

INTBOI,AL

:~~~~-~~:~7~~~s~~

:~+g-~b~~DiX

ORTC-WAIT FLAG,OI

AX -

(lRTC wll ~E~L~6

TRANSFER TABLE

- ­

I SET ON FUNCTION ACTIVE SWITCH

; SAVE (AHI

AX,X·CMOS REG B

CMOS REAO-

AL,OTFH

AL.040H

AH,AL

CMOS WR

AX -

I TE

; ENA8LE PIE

; READ ALARM 8YTE

I CLEAR SIT BIT

; ENABLE PIE BIT

; DATA TO WORK REGISTER

; WR I TE NEW ALARM BYTE

; RESTORE {AHI

WAIT TILL RTC TIMEOUT POSTED

ENDP

OX,AX

CX,DX ox

SHORT TEST_CORD_5

CX,AX

CX,IFFOH

CX,4

AX

CX

OX

ENOP

ENDP

NEAR

OS

DDS

ORTC WAIT FLAG,OI

WAIT-'

OS

CX ox

OX,CX

WA IT-9

DX,I-

WAIT_2

ORTC WAIT FLAG,O ox cx

OS

; ORIGINAL COUNT

; SET 0 COUNT FOR RETURN

; EXIT WITH COUNT

=

0

~

SET UP TO LATCH TIMER 0

READ LOW BYTE OF T r MER 0

READ HIGH 8YTE OF TIMER 0

REARRANGE TO HIGH.LOW

CHECK FOR COUNTER WRAP

GO IF NO

; ADJUST FOR WRAP

ADJUST

I NTERRUPTS BACK ON

FLUSH OTHER IIIF'UTS

; COUNT

I SET COUNT

; RETURN

SAVE

TEST FOR FUNCTION ACTIVE

SET ERROR

RETURN

(WITH ERROR TIMEOUT)

; ENABLE INTERRUPTS

SAVE CALLERS PARAMETERS

SWAP COUNT WORK REG I STERS

CHECK FOR ENO OF WA I T CLEAR CARRY

DECREMENT TIMEOUT DELAY TILL WAIT END

EXIT IF RTC TIMER WAIT ENDED FLAG SET

DECREMENT ERROR TIMEOUT COUNTER

LOOP TILL COUNTERS TIMEOUT

SET FUNCT 1ON I NACT I VE

RESTORE CALLERS PARAMETERS

CLEAR CARRY FLAG

5-166 BIOS1

IBM Personal Computer MACRO Assembler Vers,oro 2.00

BIOSI - - - 06/10/85 INTERRUPT 15H BIOS ROUTINES

506

509

510

511

512

513

514

515

477

476

479

460

461

462

483

464

465

466

467

466

469

490

491

492

493

494

495

496

497

496

499

500

501

502

503

504

505

506

507

459

460

461

462

463

464

465

466

467

466

469

440

441

442

443

444

445

446

447

446

449

450

451

452

453

454

455

456

457

456

470

471

472

473

414

475

476

516

517

516

519

520

521

522

523

524

525

526

527

526

529

530

531

532

533

534

535

536 0000

537 0008

538 0010

539 0018

540 0020

541 0028

542 0030

543

544 OICA

545

546 OICA FC

541 OICB 60

548 OICC 06

549 OICO IE

550

551

552

553 01CE E8 0000 E

'-5

06-10-85

PAGE

; - - INT 15 H -( FUNCTION 81 H BLOCK MOVE I - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ­

THIS BIOS FUNCTION PROVIDES A MEANS FOR A REAL MODE PROGRAM OR SYSTEM

TO TRANSFER A BLOCK OF STORAGE TO AND FROM STORAGE ABOVE THE 1 MEG

AOORESS RANGE IN PROTECTED MODE SPACE BY SWITCHING TO PROTECTED MODE.

ENTRY:

(AHI "

(CX) "

81H (FUNCTION CALLI BLOCK MOVE.

WORD COUNT OF STORAGE BLOCK TO BE MOVED.

NOTE I MAX COUNT" MOOH FOR 32K WORDS (65K 8YTES)

ES:SI " LOCATION OF A GOT TABLE BUILT BY ROUTINE USING THIS FUNCTION.

(ES:SI) POINTS TO A OESCRIPTOR TABLE (GOT) BUILT BEFORE INTERRUPTING

TO THIS FUNCTION. THE DESCRIPTORS ARE USE TO PERFORM THE BLOCK

MOVE I N THE PROTECTED MODE. THE SOURCE ANO TARGET DESCR I PTORS

BUILT BY THE USER MUST HAVE A SEGMENT LENGTH" 2 • CX-I OR GREATER.

THE DATA ACCESS RIGHTS BYTE MUST BE SET TO CPLO-R/W 193H). THE

24 BIT ADDRESS (BYTE HI. WORD LOWI MUST BE SET TO THE TARGET/SOURCE.

NO I NTERRUPTS ARE ALLOWED OUR I NG TRANSFER. LARGE BLOCK MOVES

MAY CAUSE LOST INTERAUPTS.

EXIT:

(AH) "DOH I F SUCCESSFUL

(AH) = OIH IF MEMORY PARITY (PARITY ERROR REGISTERS ARE CLEARED)

(AHI ,. 02H IF ANY OTHER EXCEPTION INTERRUPT ERROR OCCURRED

IAHI

=

03H IF GATE ADDRESS LINE 20 FAILED

ALL REGISTERS ARE RESTORED EXCEPT IAHI.

I F SUCCESSFUL CARRY FLAG

= a

IF ERROR - - - - - - CARRY FLAG = I

DESCRIPTION:

1. SAVE ENTRY REGISTERS AND SETUP FOR SHUTDOWN EXIT.

2. THE REQUIRED ENTRIES ARE BUILT IN THE GOT AT (ES:SI I.

3. GATE ADDRESS LINE 20 ACTIVE. CLI AND SET SHUTDOWN CODES.

4. THE IDTR 15 LOADED AND POINTS TO A ROM RESIDENT TABLE.

5. THE GDTR IS LOADED FROM THE OFFSET POINTER IES:SI I.

6. THE PROCESSOR IS PUT I NTO PROTECTED MODE.

7. LOAD (OS) AND (ES I WITH SELECTORS FOR THE SOURCE AND TARGET.

8. DS:SI (SOURCEI (ESIDI J (TARGET) REP MOVSW IS EXECUTED.

9. CHECK MADE FOR PAR I TV ERRORS.

10. REAL MODE RESTORED WHEN SHUTDOWN 09H IS EXECUTED.

11. ERRORS ARE CHECKED FOR AND RETURN CODES ARE SET FOR IAHI.

12. ADDRESS LINE 20 GATE IS DISABLED.

I

13. RETURN WITH REGISTERS RESTORED AND STATUS RETURN CODE.

; , -

(FOR PC-AT COMPATIBILITY ZF.. I IF SUCCESSFUL. ZF=O IF ERROR.) ----

- - - - - - - - - - - - -

--

- - - - - - - - -- - -

---.------------------------

- - - - - - -

-

- - - - - - -- -­

THE FOLLOWING DIAGRAM OEPICTS THE ORGANIZATION OF A BLOCK MOVE GOT.

GOT

(ES:SI)

I

'00

'08

" 8

'20

+28

----------­ i

DUMMY

I

::::~~~;~~~::::

I

I

GOT

I

1---------------1

I

I

TARGET

I

I

GOT

1---------------1

I

I

BIOS

I

I

(CS)

1---------------1

I

{55)

I

I

_ _

'--- ---- --------!

2'.' THE FIRST DESCRIPTOR IS THE REQUIRED DUMMY.

{USER INITIALIZED TO 01

THE SECOND OESCR I PTOR PO I NTS TO THE GOT

TABLE AS A DATA SEGMENT.

(USER INITIALIZED TO 0 MODIFIED BY BIOS)

3. THE THIRD DESCRIPTOR POINTS TO THE SOURCE

TO BE MOVED. (FROM)

(USER INITIALIZED)

4. THE FOURTH DESCR IPTOR POINTS TO THE

DESTINATION SEGMENT. (TO)

(USER INITIALIZED)

5. THE FIFTH IS A DESCRIPTOR THAT BIOS USES

TO CREATE THE PROTECTED MODE CODE SEGMENT.

(USER INITIALIZED TO 0 MODIFIED BY BIOSI

6. THE SIXTH DESCRIPTOR IS USED BY BIOS TO

CREATE A PROTECTED MODE STACK SEGMENT.

(USER INITIALIZED TO 0 MODIFIED BY BIOSI

{POINTS TO USERS STACK)

SAMPLE OF SOURCE OR TARGET DESCR IPTOR

SOURCE_ TARGET_DEF

SEG LIMIT

LO WORD

HI-BYTE

OW

DW

DB

DATA ACC RIGHTS DB

RESERVEDOW

SOURCE_TARGET_OEF

STRUC

ENDS

?

?

?

93H o

SEGIlENT LIMIT /1-65536 BYTES)

24 BIT SEGMENT PHYSICAL

ADDRESS 10 TO (I 6M- I I I

ACCESS RIGHTS BYTE (CPLO-R/WI

RESERVED WORD (MUST BE ZERO I

THE GLOBAL DESCRIPTOR TABLE (ACTUAL LOCATION POINTED TO BY ES:SI)

BLOCKMDVE GOT DEF

OQ

CeDT LOC

SOURCE

TARGET

DQ

DQ

DQ

BIOS CS

TEMP-SS

DQ

DQ

BLOCKMOVE_GOT _OEF

BLOCK MOVE PROC

CLD

PUSHA

PUSH

PUSH

CALL

ES

OS

NEAR

STRUC

7

?

?

?

?

?

ENDS

SAVE THE CALLING ROUTlNE"S STACK

DDS

FIRST DESCRIPTOR NOT ACCESSIBLE

LOCATION OF CALLING. ROUTINE GOT

SOURCE OESCR IPTOR

TARGET DESCR I PTOR

BIOS CODE DESCR I PTOR

STACK OESCR I PTOR

SET DIRECT I ON FORWARD

SAVE GENERAL PURPOSE REGISTERS

SAVE USERS EXTRA SEGMENT

SAVE USERS DATA SEGMENT

; SET OS TO OATA AREA.

BIOS1 5-167

1-6

06-10-85

IBM Personal Computer MACRO Asselrlbl.r Vers,on 2.00

BIOSI - - - 06/10/85 INTERRUPT 15H BIOS ROUTINES

554 0101 8C 16 0069 R

555 0105 89 26 0067 R

55.

557

558

559

5.0

5.'

562 0109 8C CO

563 010B 8E 08

564 0100 8A F4

565 OIDF CO EE 04

566 0lE2 CI EO 04

567 0lE5 03 C6

568 0lE7 80 06 00

5.9

570

571

572 0 lEA C7 44 013 FFFF

573 OIEF 89 44 OA

574 0lF2 88 74 DC

575 0lF5 C7 44 DE 0000

57.

577

578

579 OIFA C7 44 20 FFFF

580 0 IFF C7 44 22 0000

581 0204 C6 44 24 OF

582 0208 C6 44 25 9B

583 020C C7 44 26 0000

584

585

58.

58702118CDO

588 0213 8A F4

589 0215 CO EE 04

590 0218 CI EO 04

591

592

593

594 021B C1 44 28 FFFF

595 0220 89 44 2A

596 0223 88 14 2C

597 0226 C6 44 20 93

598

599

.00

601 022A B4 OF

602 022C E8 03CC R

603 022F 3C 00

604 0231 74 06

.05

606 0233 BO 03

601 0235 E6 80

608 0237 EB 51

.09

.'0

61 I 0239

.,.

612 0239 B8 098F

.,,

023C E8 0000 E

.'5

6!1 023F 2A CO

618 0241 E680

619

620

621

622 0243 BO 02C6 R

623

624 0246 2E

.25

626 0241 OF

621 0248

628 0248 8B 5E 00

629 0248

630 0248

631 0248 01

632 0248

633

63'

635 0248 OF

636 024C

631 024C 88 54 08

638 024F

639 024C

640 024C 0 I

641 024F

6'2

•• 3

6"

6'5

646 024F 88 0001

6.7

648 0252 OF 0 I FO

649 0255 EA

650 0256 025A R

651 0258 0020

652 025A

653

65.

655

656 025A B8 0028

651 0250 8E 00

658 025F B8 0010

659 0262 8E 08

660 0264 88 0018

661 0261 8E CO ...

0269 28 F6

0268 28 FF

665 0260 F3/ A5

666

667

"OV

"OV

<!'tID ROM SEG, SS

<!'tIO=:ROM=:INIT,SP

: SAVE USERS STACK SEGMENT

; SAVE USERS STACK POINTER

, =====

SET UP THE PROTECTED MODE DEFINITIONS

=====

MAKE A 24 BIT ADDRESS OUT OF THE ES:SI FOR THE GOT POINTER

ASSUME OS:NOTHING

"OV AX ,ES

"OV

"OV

OS ,AX

OH.AH

SHR OH,4

SHL

ADO

AX,4

AX, S I

AOC OH,O

PO I NT (OS J TO USERS CONTROL. BL.OCK

GET THE GOT DATA SEGMENT

MOVE THE GOT SEGMENT PO I NTER TO (OS)

BU I LD HIGH BYTE OF THE 24 BIT ADDRESS

USE ONLY HIGH NIB8LE SHIFT RIGHT 4

STRIP HIGH NIBBLE FROM (AX)

ADD THE GeT OFFSET TO DEVELOP LOW WORD

ADJUST HIGH BYTE I F CARRY FROM LOW

SET THE GOT L.OC

"OV

"OV

"OV

(;:) :gggi-tgg

:~~~EL~~I~O~~:A~EG~~E~ET

[SI].CGDT-LOC.BASE-HI-8YTE,DH

THE LOW WORO

SET THE HIGH BYTE

[SI j.CGOT=:LOC.DATA:RESERVEO,O j RESERVED

SET UP THE CODE SEGMENT DESCRIPTOR

"OV

"OV

"OV

"OV

"OV

MAKE A 24 BIT ADDRESS OUT OF THE (SS) I (SP) REMAINS USER (SP) )

"OV

"OV

SHR

SHL

AX, SS

OH,AH

OH,4

AX,4

: GET THE CURRENT STACK SEGMENT

: FORM HIGH BYTE OF 24 BIT ADDRESS

; FORM HIGH BYTE SHIFT RIGHT 4

; STRIP HIGH NIBBLE FROM lAX)

;-----

SS IS NOW IN POSITION FOR A 24 81T ADDRESS --> SETUP THE (55) DESCRIPTOR

"OV

"OV

"OV

"OV f~~1:i~~~~~~:~~~EL~~I!O~~~AiEG_LEN

;

;~i i~~ ~~WS:g~~NT

LIMIT

[Slj.TEMP-SS.BASE-HI-8YTE.DH ; SET THE HIGH BYTE

[SI].TEMP=:SS.DATA=ACC_RIGHTS.CPLO_DATA_ACCESS ; SET CPL 0

;

-----

GATE ADDRESS BIT 20 ON (0 I SA8LE INTERRUPTS)

"OV

CALL e"p

JZ

AH,ENA8LE 81T20

GATE_A20 -

"L,O

BLA

ClET ENABLE MASK

ENABLE A20 AND CL.EAR INTERRUPTS

WAS THE COMMAND ACCEPTED?

GO IF YES

MDY

DUT

J"P

AL.,03H

MFG PORT, AL

SHORT SHUT9

I SET THE ERROR FLAG I F NOT

EARLY ERROR EX I T

SET SI-lUToOWN RETURN ADDRESS AND DISABLE NMI

MOV

CALL

AX,9-H+CMOS SHUT DOWN+NMI

CMOS_WRITE -

CLEAR EXCEPT I ON ERROR FLAG

; SET THE SHUTDOWN 8YTE L.OCATION

: TO SHUT DOWN 9 AND 0 I SABLE NM [

SUB

OUT

AL,AL

MFG_PORT .AL

LOAD THE (DT AND GOT

MDY

5EGOV

DB

LIDT

DB

710001 LABEL

"OV

??0002 LABEL.

ORG

DB

ORG

LGOT

DB

??0003 LABEL.

"DV

??0004 LABEL.

ORG

DB

ORG

~~,OFFSET

02EH

[BPj

OOFH

ROM_loT_LOC

BYTE

BX,WORD PTR [BP]

8YTE

OFFSET C5:770001

001H

OFFSET CS: ??0002

[SI).CGDT LOC

OOFH

OFFSET CS: ??0003

00' H

OFFSET CS: ??0004

SET ERROR FLAG LOCATION TO 0

; L.OAD THE lOT

REG I STER FROM TH [5 AREA

; LOAD GL.OBAL DESCRIPTOR TABLE REGISTER

8YTE

OX,WORD PTR [SI

8YTE

J

.CGOT LOC

SWITCH TO VIRTUAL. MODE

"OY

LMSW

DS

DS

DW

OW

AX, V I RTUAL. ENA8LE

AX -

OOFH.001H,OFOH

OEAH

OFFSET V IRT

810S_CS

MACH J NE STATUS WORD NEEDED TO

SWITCH TO VIRTUAL MODE

PURGE PRE-FETCH QUEUE WITH FAR ..JUMP

TO OFFSET

I N SEGMENT -PROTECTED MODE SELECTOR v I RT:

1-----

J N PROTECTED MODE SETUP STACK SELECTOR AND SOURCE IT ARGET SELECTORS

MDY

MDV

"DV

MDY

"DV

"DY

SUS

SUB

AX, TEMP SS

SS, AX -

AX, SOURCE oS,AX

AX, TARGET

ES,AX

S I, S (

OJ ,O!

MOVSW

USER'S SS+SP IS NOT A DESCRIPTOR

LOAD STACK SELECTOR

GET THE SOURCE ENTRY

LOAD SOURCE SELECTOR

GET THE TARGET ENTRY

LOAD TARGET SELECTOR

SET SOURCE INDEX REGlSTER TO ZERO

SET TARGET INDEX REG! STER TO ZERO

MOVE THE BL.OCK COUNT PASSED IN (CX) REP

CHECK FOR MEMORY PAR I TY BEFORE SHUTDOWN

5-168 BIOS1

IBM P.,..son.t COlllput.,.. MACRO Ass ....bl.,..

81051 ---06/10/65 !NTERRUPT

Version 2.00

ISH BIOS ROUTINES

668

669 026F E4 61

610

,.

611

612

0273 12

613

61'

615 0275 68 aS

616 0277 89 05

611 0219 80 O!

676 027B E6 60

679 0270 E4 6!

660 027F OC OC

.61 028! E6 61

662 0283 24 F3

.63 0285 E6 61

. 6 .

665

6 . .

667 0281

668 0267 E9 0000 E

689

690

691

692

693 028A

694

695 028A B8 - - - - R

696 0260 6E 06

.97 028F 6E 16 0069 R

6.6 0293 6a 26 0067 R

.99

700

701

702 0297 B4 DO

703 0299 E8 03CC

704 029C 3C 00

705 029E 14 OA

106

101 02AO E4 60

708 02A2 3C 00

10. 02A4 75 04

110 02A6 80 03

111 02A8 E6 80

R

112

113 ".

715 02AA

716 02AA 88 0000

717 02AD E6 70

116

719 02AF IF

720 0280 01

721 02BI E4 80

722 02B3 88 EC

723 02B5 88 46 OF

724 02B8 3A EO

125 028A 61

126 0288 F8

721 028C

726 02BC CA 0002

729 02BF

730

131

132

733 02BF

73' 02BF BO 02

735 02Ct E6 80

736 02C3 E9 0000 E

737

736

739

7.0 02C6

7., 02C6 0 I 00

742 02C8 02CC R

743 02CA OF

144 02C8 00

145

746

,.7

" 6 02CC

149 02CC 028F R

150 02CE 0020

151 0200 00

752 0201 67

753 0202 0000

75'

755 0204 02aF R

756 0206 0020

757 0208 00

756 0209 67

759 02DA 0000

760

161 02DC 02BF R

762 02DE 0020

763 02EO 00

764 02E I

765 02E2

766

761 02E4 02BF R

168 02E6 0020

76. 02E8 00

770 02E9 87

771

772

02EA 0000

773 02EC 02eF R

77. 02EE 0020

775 02FO 00

77. 02FI 67

777 02F2 0000

776

779 02F4 02eF R

160 02F6 0020

781 02F8 00

1-7

06-10-85

IN

AND

JZ

AL,PORT 8

AL,PARITY ERR

DONE I -

"OV

"DV

MaV

OUT

IN

OR

OUT

ANa

OUT

CLEAR PAR I TY BEFORE SHUTDOWN

~~;[~; '~H

AL,OI

MFG PORT ,AL

AL,PORT 8

AL,RAM PAR OFF

PORT B-;-AL -

AL,RAM PAR ON

PORT_8-;AL ­

CAUSE A SHUTDOWN

DONE I :

J"P PROC _SHUTDOWN

GET THE PARITY LATCHES

STRIP UNWANTED BITS

GO IF NO PARITY ERROR

FETCH CURRENT SOURCE DATA

WR I TE IT BACK

SET PAR I TY CHECK ERROR = 0 I

TOGGLE PARITY CHECK LATCHES

TO CLEAR THE PENDING ERROR

AND ENABLE CHECK I NG

GO RESET PROCESSOR AND SHUTDOWN

; ==============s==== = ==

SHUT9 :

ASSUME DS:DATA

"aV

MOV

AX,DATA

DS,AX

MOV 55,010 ROM SEG

MOV SP,G!lIO:ROM:=INIT

1-----

GATE ADDRESS BIT 20 OFF

MaV

CALL eMP

JZ

IN

C"P

IN'

MaV

OUT

AH,D I SABLE -BIT20

GATE A20 -

AL,O

DONE3

AL ,MFG PORT

AL,O -

DONE3

AL.03H

MFG_PORT ,AL

RESTORE USERS STACK

I SET OS TO DATA AREA

GET USER STACK SEGMENT

GET USER STACK POINTER

DISABLE MASK

GATE ADDRESS 20 LINE OFF

COMMAND ACCEPTED?

GO IF YES

CHECK FOR ANY OTHER ERROR FIRST

WAS THERE AN ERROR?

REPORT FIRST ERROR IF YES

ELSE SET GATE A20 ERROR FLAG

RESTORE THE USERS REGISTERS AND SET RETURN CODES

DONE3s

DONE4

DONE4

; - - - - -

MOV

OUT

POP

POP

IN

MOV

"OV

C"P

POPA

STI

PROC

RET

ENOP

AX,CMOS REG 0

CMOS_PORT ,AL as

ES

AL,MFG PORT

BP,SP -

[BP+IS] ,AL

AH,AL

FAR

2

CLEAR I AH) TO ZERO AND 1AL) TO DEF AUL T

ENABLE NM I INTERRUPTS

RESTORE USER OAT" SEGMENT

RESTORE USER EXTRA SEGMENT

GET THE ENDING STATUS RETURN CODE

POINT TO REGISTERS IN THE STACK

PLACE ERROR CODE INTO STACK AT (AHI

SET THE ZF & CY FLAGS WITH RETuRN CODE

RESTORE THE GENERAL PURPOSE REG I STERS

TURN I NTERRUP,TS ON

RETURN WITH FLAGS SET --

ICY=O,ZF=I)= OK

(AH) = CODE tCY=I,ZF=Ol= ERROR

8LOCK MOVE EXCEPTION INTERRUPT HANDLER

MOV

OUT

J"P

AL,02H

MFC PORT ,AL

PRoe_SHUTDOWN

ROM lOT LOCATION

ROM lOT:

ow ow

DB

OB

OW ow

OW

OB

OB ow ow

Ow aB

DB

OW

OW

OW

DB oe dw

Ow ow

De

De

OW

Ow

Ow aB

EX INT

BIOS CS o -

EX INT

8105 CS o -

TRAP GATE o -

EX INT

BIOS CS o -

TRAP GATE o -

EX INT

BIOS CS o -

TRAP GATE o -

EX INT

BIOS CS o

TRAP GATE o -

EX INT

BIOS CS o -

GET EXCEPT I ON ERROR: CODE

SET EXCEPT I ON I NTERRUPT OCCURRED FLAG

CAUSE A EARLY SHUTDOWN

ROM lOT LOC:

-ow

OW aB aB

ROM lOT END-ROM lOT

ROM-IOT-

CSEC;. HI o -

LENGTH OF ROM lOT TABLE

LOW WORD OF BASE AOORESS

HIGH BYTE OF BASE ADDRESS

RESERVED

THE ROM EXCEPTION INTERRUPT VECTOR GATES FOR 8LOCK MOVE

EXCEPTION .00

DESTINATION OFFSET

DESTINATION SECMENT SELECTOR

WORD COPY COUNT

GATE TYPE ACCESS RIGHTS BYTE

RESERVED

EXCEPTION 01

DESTINATION OFFSET

DESTINATION SEGMENT SELECTOR

WORD COpy COUNT

GATE TYPE ACCESS RIGHTS BYTE

RESERVED

EXCEPT! ON 02

DESTINATION OFFSET

DESTINATION SEGMENT SELECTOR

WORD COPY COUNT

GATE TYPE ACCESS RIGHTS BYTE

RESERVED

EXCEPTION 03

DESTINATION OFFSET

DESTINATION SEGMENT SELECTOR

WORD COPY COUNT

GATE TYPE ACCESS RIGHTS BYTE

RESERVED

EXCEPT I ON 04

DESTINATION OFFSET

DESTINATION SEGMENT SELECTOR

WORD COPY COUNT

GATE TYPE ACCESS RIGHTS BYTE

RESERVED

EXCEPTION 05

DESTINATION OFFSET

DESTINATION SEGMENT SELECTOR

WORD COPY COUNT

BIOSl

5-169

I BM Per son a I Co",puter MACRO Assemb ter Version 2.00

BIOSl

~--06/10/65 INTERRUPT t5H BIOS ROUT I NES

782 02F9 87

783 02FA 0000

784

785 02FC 028F R

786 02FE 0020

787 0300 00

788 0301

789

"

790

791 0304 02BF R

792 0306 0020

793 0306 00

794 0309 87

795 030.1. 0000

796

797 030C 02BF R

798 030E 0020

799 0310 00

800 0311 87

801 0312 0000

802

803 0314 02BF R

80' 0316 0020

805 0318 00

806 0319 87

807 031.1. 0000

808

809 031C 02BF R

810 031E 0020

811 0320 00

812 0321 87

813 0322 0000

814

815 0324 02BF R

816 0326 0020

817 0328 00

818 0329 87

819 032A 0000

820

821 032C 02BF R

822 032E 0020

823 0330 00

824 0331 87

825 0332 0000

826

827 0334 02BF R

828 0336 0020

829 0338 00

830 0339 87

831 033.1. 0000

832

833 033C 02BF R

834 033E 0020

835 0340 00

836 0341 87

837 0342 0000

838

839 0344 02BF R

840 0346 0020

841 0348 00

842 0349 81

84' 034.1. 0000

844

845 034C 02BF R

846 03"E 0020

847 0350 00

848 0351 87

849 0352 0000

850

851 035-4 02BF

852 0356 0020

853 0358 00

.54 0359 87

R

855 035.1. 0000

856

857 035C 02BF R

858 035E 0020

859 0360 00

860 0361 87 .61

0362 0000

862

863 036-4 02BF R

864 0366 0020

865 0368 00

866 0369 87

867 036.1. 0000

. 6 .

869 036C 02BF R

870 036E 0020

871 0370 00

.72 031 I .7

873 0312 0000

.74

875 0314 02BF R

. 7 . 0316 0020

877 0316 00

878 0319 87

879 031.1. 0000

880

881 031C 02BF R

882 031E 0020

883 0380 00

884 0361 87

885 0382 0000

886

887 0384 02BF R

888 0386 0020

889 0388 00

890 0389 87

891 036A 0000

892

893 038C 02BF R

894 038E 0020

895 0390 00

OW

OW

DB

DB

OW

OW

OW

DB

DB

OW

OW

OW

DB

DB

OW

OW

OW

DB

08

OW

OW

OW

08

08

OW

OW

OW

08

08

OW

OW

OW

08

08

OW

OW

OW

DB

DB

OW

OW

OW

08

08

OW

OW

OW

08

DB

OW

OW

OW

DB

OW

OW

DB

DB

OW

OW

OW

DB

DB

OW

OW

OW

DB

DB

OW

OW

OW

08

DB

OW

OW

OW

DB

DB

OW

DB

OW

OW

OW

DB

DB

OW

OW

OW

DB

DB

OW

OW

OW

DB

08

OW

EX INT

BIOS_CS

0

TRAP _GATE

0

EX INT

BIOS CS

0

TRAP _GATE

0

EX INT

BIOS C5

0

TRAP _GATE

0

EX INT

0

BIOS CS

0

EX INT

BIOS_CS

0

0

EX INT

BIOS_CS

0

TRAP_GATE

0

EX INT

BIOS

-

C5

0

TRAP_GATE

0

0

EX INT

BIOS CS

TRAP_GATE

0

EX INT

BIOS_CS

0

TRAP _GATE

0

EX INT

BIOS_CS

0

TRAP _GATE

0

EX INT

BIOS_CS

0

TRAP_GATE

0

EX INT

BIOS_CS

0

0

EX INT

0

BIOS CS

TRAP _GATE

0

EX INT

B 10S_CS

0

TRAP _GATE

0

EX IN7

BIOS_CS

0

TRAP _GATE

0

EX INT

BIOS_CS

0

TRAP _GATE

0

EX INT

BIOS_CS

0

TRAP_GATE

0

EX INT

BIOS_CS

0

TRAP_GATE

0

EX INT

BIOS -

CS

0

TRAP_GATE

0

1-8

06-10-85

GATE TYPE

RESERVED

-

ACCESS RIGHTS BYTE

EXCEPT I ON 06

DESTINATION OFFSET

DESTINATION SEGMENT SELECTOR

WORD COPY COUNT

GATE TYPE

-

ACCESS RIGHTS BYTE

RESERVED

EXCEPT I ON 01

DESTINATION OFFSET

DESTINATION SEGMENT SELECTOR

WORD COPY COUNT

GATE TYPE ACCESS RIGHTS BYTE

RESERVED

EXCEPT I ON 08

DESTINATION OFFSET

DESTINATION SEGMENT SELECTOR

WORD COPY COUNT

GATE TYPE ACCESS RIGHTS BYTE

RESERVED

EXCEPT I ON 09

DESTINATION OFFSET

DESTINATION SEGMENT SELECTOR

WORD COPY COUNT

GATE TYPE ACCESS RIGHTS BYTE

RESERVED

EXCEPT I ON 10

DESTINATION OFFSET

DESTINATION SEGMENT SELECTOR

WORD COPY COUNT

GATE TYPE ACCESS RIGHTS BYTE

RESERVED

EXCEPT ION II

DESTINATION OFFSET

DESTINATION SEGMENT SELECTOR

WORD COPY COUNT

GATE TYPE

-

ACCESS RIGHTS BYTE

RESERVED

EXCEPTION 12

DEST I NA TI ON OFFSET

DEST I NAT I ON SEGMENT SELECTOR

WORD COPY COUNT

GATE TYPE

RESERVED

ACCESS RIGHTS BYTE

EXCEPTION 13

DESTINATION OFFSET

DESTINATION SEGMENT SELECTOR

WORD COPY COUNT

GATE TYPE

-

ACCESS RIGHTS BYTE

RESERVED

EXCEPT I ON 14

DESTINATION OFFSET

DESTINATION SEGMENT SELECTOR

WORD COPY COUNT

GATE TYPE ACCESS RIGHTS BYTE

RESERVED

EXCEPT I ON 15

DESTINATION OFFSET

DESTINATION SEGMENT SELECTOR

WORD COPY COUNT

GATE TYPE

RESERVED

ACCESS RIGHTS BYTE

EXCEPT I ON 16

DESTINATION OFFSET

DESTINATION SEGMENT SELECTOR

WORD COpy COUNT

GATE TYPE ACCESS RIGHTS BYTE

RESERVED

EXCEPT I ON 17

DESTINATION OFFSET

DESTINATION SEGMENT SELECTOR

WORD COPY COUNT

GATE TYPE

-

ACCESS RIGHTS BYTE

RESERVED

EXCEPTION 18

DEST I NAT I ON OFFSET

DESTINATION SEGMENT SELECTOR

WORD COPY COUNT

GATE TYPE

-

ACCESS RIGHTS BYTE

RESERVED

EXCEPTION 19

DESTINATION OFFSET

DEST I NAT I ON SEGMENT SELECTOR

WORD COPY COUNT

GATE TYPE

-

ACCESS RIGHTS BYTE

RESERVED

EXCEPT I ON 20

DESTINATION OFFSET

DESTINATION SEGMENT SELECTOR

WORD COPY COUNT

GATE TYPE

-

ACCESS RIGHTS BYTE

RESERVED

EXCEPT I ON 2 I

DESTINATION OFFSET

DESTINATION SEGMENT SELECTOR

WORD COPY COUNT

GATE TYPE ACCESS RIGHTS BYTE

RESERVED

EXCEPT J ON 22

DESTINATION OFFSET

DESTINATION SEGMENT SELECTOR

WORD COPY COUNT

GATE TYPE

RESERVED

ACCESS RIGHTS BYTE

EXCEPTION 23

DESTINATION OFFSET

DESTINATION SEGMENT SELECTOR

WORD COPY COUNT

GATE TYPE ACCESS RIGHTS BYTE

RESERVED

EXCEPT I ON 24

DEST I NAT I ON OFFSET

DESTINATION SEGMENT SELECTOR

WORD COPY COUNT

5-170 BIOSI

/"""""\

IBM Persona I Computer MACRO Assemb I er

BIOS1

Version 2.00

----

06110185 INTERRUPT 15H BIOS ROUTINES

8% 0391 87

897 0392 0000

898

899 0394 028F R

900 0396 0020

90! 0398 00

902 0399 87

903 039A 0000

904

905 039C 028F R

906 039E 0020

907 03AO 00

908 03Al 87

909 03A2 0000

9[0

9[[ 03A4 02BF R

9 [2 03Ab 0020

913 03A8 00

9[4 03A9 87

915 03AA 0000

9.6

917 03AC 028F R

9[8 03AE 0020

9[9 0380 00 no

0381 87 n.

0382 0000

022

923 0384 028F R

924 0386 0020

92S 0388 00

926 0389 87

927 038A 0000

92.

9;:9 03BC 02BF R

930 03BE 0020

931 03CO 00

932 03Cl 87

933 03C2 0000

934

93S 03C4 02BF R

936 03Cb 0020

937 03C8 00

938 03C9 87

939 03CA 0000

940 03CC

941

942 03CC

DB

DW

DW

DW

DB

DB

0

EX [NT

0

TRAP _(';ATE

0

DW

DW

DB

DB

DW

DW

DW

DB

DB

DW

DW

DW

DB

08

DW

EX [NT

BIOS CS

0

0

TRAP (';ATE

EX [NT

0

0

EX [NT

BIOS_CS

0

0

DW

DW

DB

DB

DW

DW

DW

DB

DB

DW

EX [NT

0

0

EX [NT

0

TRAP _GATE

0

OW

DW

DB

DB

DW

RD" [DT -

END:

8LOCKMOVE ENDP

EX [NT

0

0

[ -9

Ob-10-85

GATE TYPE ACCESS RIGHTS 8YTE

RESERVED

EXCEPT I ON 25

DEST[NATION OFFSET

DEST I NAT I ON SEGMENT SELECTOR

WORD COpy COUNT

GATE TYPE ACCESS RIGHTS BYTE

RESERVED

EXCEPT I ON 26

DESTINATION OFFSET

DESTI NATI ON SE(,;MENT SELECTOR

WORD COPY COUNT

GATE TYPE ACCESS RIGHTS BYTE

RESERVED

EXCEPTION 27

DESTI NAT! ON OFFSET

DEST I NAT I ON SEGMENT SELECTOR

WORD COPY COUNT

GATE TYPE ACCESS RIGHTS BYTE

RESERVED

EXCEPT I ON 28

DESTINATION OFFSET

DEST I NAT I ON 5E(';MENT SELECTOR

WORD COPY COUNT

(';ATE TYPE ACCESS RIGHTS BYTE

RESERVED

EXCEPT J ON 29

DESTINATION OFFSET

DEST [NAT I ON SEGMENT SELECTOR

WORD COPY COUNT

(';ATE TYPE ACCESS R I (';HTS BYTE

RESERVED

EXCEPT I ON 30

DESTINATION OFFSET

DEST! NAT I ON SE(';MENT SELECTOR

WORD COPY COUNT

GATE TYPE ACCESS R I G.HTS BYTE

RESERVED

EXCEPT [ON 31

DESTINATION OFFSET

DEST J NAT I ON SE(';MENT SELECTOR

WORD COPY COUNT

GATE TYPE ACCESS RIGHTS BYTE

RESERVED

BIOS1 5-171

1005

1006

1007

1008

1009

1010

10 I J

1012 lOt 3

1014

1015

1016

1017

1018

1019

1020

102 t

1022

1023

1024

1025

1026

1027

992

993

••• ..

"6 ,

•••

999

1pOO

100 I

1002

1003

1004

969

."

973

974

975

916 ."

91.

919

,.,

'.2

9.3

" 3

'54

•••

9"

958

959

960

961

962

963

964

965

966

967

968

9 • •

9 ••

986

987

988

989

990

991

03CC

03CC

03CO

03CE

0301

0303

0305

0307

030A

030C

03DE

03EO

03E3

03E3

03E4

03EE

51

FA

E8 03E5 R

75 10

BO 01

E6 64

E8 03E5 R

75 07

8A C4

E6 60

E8 03E5 R

59

C3

03E5

03E5

03E7

03E7

03E9

03EB

03ED

03EE

2B C9

E4 64

24 02

EO FA

C3

03EE

03F I

03F4

03F6

03F9

B8 3031

E8 0000 E

86 C4

E8 0000 E

CF

03FA

IBM Pe!"sonal Co",pute!" MACRO ASlle",ble!"

BIOSI - - - 06/10/85

Version 2.00

INTERRUPT ISH BIOS ROUTINES

•• 3

•••

9.6

..

,

•••

1-10

06-10-85

;

PAGE

;--

----------

- - -

-----

- - - - -

---------

- -- - -

---------------------------------

- - - - -­

; GATE A21)

THIS ROUTINE CONTROLS A SIGNAL WHICH GATES ADDRESS BIT 20.

; THE GATE A20 SIGNAL I S AN OUTPUT OF THE 8042 SLAVE PROCESSOR •

ADDRESS BIT 20 SHOULD BE GATED ON BEFORE ENTERING PROTECTED MODE •

IT SHOULD BE GATED OFF AFTER ENTERING REAL MODE FROM PROTECTED

MODE. INTERRUPTS ARE LEFT DISABLED ON EXIT.

INPUT

OUTPUT

IAH) .. DOH ADDRESS BIT 20 GATE OFF. IA20 ALWAYS ZERO)

IAH)

=

DFH ADDRESS BIT 20 GATE ON. (A20 CONTROLLED BY 802861

(ALl = OOH OPERATION SUCCESSFUL. 8042 HAS ACCEPTED COMMAND.

(ALl

=

02H FAILURE--8042 UNABLE TO ACCEPT COMMAND. b~~~-~;~--------;~O~-----------------------------------------------------------

PUSH

CLI

CALL

JNZ

MOV

OUT

CALL

JNZ

MOV

CX

EMPTY 8042

GATE A20 RETURN

AL.ODlH -

STATUS PORT .AL

EMPty 8042

GATE A20 RETURN

AL, AH g~~L ~~~iY~8~~2

SAVE USERS (CX)

DISABLE INTERRUPTS WHILE USING 8042

INSURE 8042 INPUT BUFFER EMPTY

EX I T IF 8042 UNABLE TO ACCEPT COMMAND

8042 COMMAND TO WRITE OUTPUT PORT

OUTPUT COMMAND TO 8042

WA I T FOR 8042 TO ACCEPT COMMAND

EX I T IF 8042 UNABLE TO ACCEPT COMMAND

8042 PORT DATA

~~T~U~0~0~64~Ai~ ~gc~gi2

PORT DATA

8042 OUTPUT WILL SWITCH WITHIN 20 MICRO SECONDS OF ACCEPTING PORT OATA

GATE A20 RETURN:

POP CX

RET

; RESTORE USERS (CX)

I - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ­

I EMPTY 8042

INPUT

-THIS ROUTINE WAITS FOR THE 8042 INPUT BUFFER TO EMPTY.

NONE

OUTPUT

I ALl: OOH 8042 I NPUT BUFFER EMPTY (ZERO FLAG SET)

(AL): 02H TIME OUT, 8042 INPUT BUFFER FULL (NON-ZERO FLAG SETI

;

; ~---

(CX) MODIFIED --------

-

--

- - - - - -

---

-

-----

- - - - - - - -

---------------------

- - - - - -- - - - - -

---

-

-

-­

EMPTY 80421

SUB (CX) =0, WILL BE USED AS TIME OUT VALUE CX,CX

EMPTY L:

IN AL.STATUS PORT

AND AL, I NPT BUF FULL

READ 8042 STATUS PORT

TEST I NPUT BUFFER FUl.L FLAG (BI T I)

LOOP UNT I L BUFFER EMPTY OR T I ME OUT

GATE_A20

LOOPNZ EMPTY _L-

RET

ENDP

INT 15 H -( FUNCTION 88 H I/O MEMORY SIZE DETERMINE) - - - - - - - - - - - - - - - ­

EXT MEMORY

THIS ROUTINE RETURNS THE AMOUNT OF MEMORY IN THE SYSTEM THAT IS

LOCATED STARTING AT THE l024K ADDRESSING RANGE, AS DETERMINED BY

THE POST ROUT I NES.

NOTE THAT THE SYSTEM MAY NOT BE ABLE TO USE 110 MEMORY UNLESS THERE

I S A FULL COMPLEMENT OF 512K OR 640 BYTES ON THE PLANAR. TH ISS I ZE

SIZE I S STORED I N CMOS AT ADDRESS LOCA T IONS 30H AND 3 I H.

AH = 88H

THE I/O MEMORY SIZE VARIABLE IS SET DURING POWER ON

OIAGNOSTICS ACCORDING TO THE FOLLOWING ASSUMPTIONS:

I. ALL INSTALLED MEMORY IS FUNCTIONAL.

2. ALL MEMORY FROM 0 TO 640K MUST BE CONT I GUOUS.

OUTPUT

[AX I = NUMBER OF CONT I GUDUS 1 K BLOCKS OF MEMORY A

AVAILABLE STARTING AT ADDRESS 1024K.

;

-------

- - - -

-

- - - - - - - - - - - - -

-

- - - - - - -- - - - - -

---

- - - - - - - -

----------------

- - - - - - - - - - -­

EXT_MEMORY

MOV

CALL

XCHG

CALL

IRET

PRDC

~~O;M~~A~_M-S-LO·H+CMOS-~-~E~-~~E

J H

~~~R~~~EH~~H:7gwM~~6~~

AL,AH

CMOS READ

-

; PUT HIGH BYTE IN POSITION (AHl

; GET THE LOW BYTE OF 1/0 MEMORY

I RETURN TO USER

EXT_MEMORY ENDP

5-172

BIOSl

"0

'"

"3

"4

"5

"6

1117

"8

"9

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

1075

1016

1017

1018

1019

1080

1081

1082

1083

1084

1085

1062

1063

1064

1065

1066

1061

1068

1069

1010

1011

1012

1013

1014

1048

1049

1050

1051

1052

1053

1054

1055

1056

1051

1058

1059

1060

1061

1028

1029

1030

1031

1032

1033

1034

1035

1036

1031

1038

1039

1040

1041

1042

1043

1044

1045

1046

1041

1086

1081

1088

1089

1090

1091

1092

1093

1094

1095

1096

1091

1098

1099

I 100

I 101

1102

1103

1104

1 105

1 106

I 101

1 108

>09

IBM Personal Computer MACRO Assembler Verll;on 2.00

BIOSI ---06/10/85 INTERRUPT 15H BIOS ROUTINES

1-11

06-10-85

PACiE

; - - INT 15 H I FUNCTION 89 H ) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ­

, PURPOSE:

; THIS BIOS FUNCTION PROVIDES A MEANS TO THE USER TO SWITCH INTO

; V I RTUAL (PROTECTEO) MODE. UPON COMPLET I ON OF TH I S FUNCT I ON THE

PROCESSOR WILL BE IN VIRTUAL (PROTECTEO) MODE AND CONTROL WILL

BE TRANSFERRED TO THE CODE SECiMENT THAT WAS SPECIFIED BY THE USER.

ENTRY REQUIREMENTS:

IES:SIJ POINTS TO A OESCRIPTOR TABLE (GOT! BUILT BEFORE INTERRUPTING

TO THIS FUNCTION. THESE DESCRIPTORS ARE USED BY THIS FUNCTION TO

I NIT I AL I ZE THE I OTR. THE GDTR AND THE STACK SEGMENT SELECTOR. THE

DATA SEGMENT IDS) SELECTOR AND THE EXTRA SEGMENT IES) SELECTOR WILL

BE INITIALIZE TO DESCRIPTORS BUILT BY THE ROUTINE USING THIS FUNCTION.

BH OFFSET I NTO THE INTERRUPT OESCR I PTOR TABLE ST ATI NG WHERE THE

FIRST EIGHT HARDWARE INTERRUPTS WILL BEGIN. ( INTERRUPT LEVEL I

8L OFFSET INTO THE INTERRUPT DESCRIPTOR TABLE STATING WHERE THE

SECOND EIGHT HARDWARE I NTERRUPTS BEG J N. ( I NTERRUPT LEVEL 2 )

I

THE DESCRIPTORS ARE DEFINED AS FOLLOWS:

THE FIRST DESCRIPTOR IS THE REQUIRED DUMMY.

(USER INITIALIZED TO 0)

2. THE SECOND DESCRIPTOR POINTS TO THE GOT TABLE AS

A DATA SEGMENT.

(USER INITIALIZED)

THE THIRD DESCRIPTOR POINTS TO THE USER DEFINED

INTERRUPT DESCR I PTOR TABLE (lOT).

IUSER INITIALIZED)

THE FORTH DESCR[PTOR POINTS TO THE USER'S DATA

SEGMENT (OS).

WSER INIT[ALIZED)

THE FIFTH DESCR I PTOR PO (NTS TO THE USER' S EXTRA

SEGMENT (ES).

IUSER [NITIALIZED)

6. THE SIXTH DESCRIPTOR POINTS TO THE USER'S STACK

SEGMENT (SS ) •

(USER INITIALIZED}

THE SEVENTH OESCR I PTOR PO I NTS TO THE CODE SEGMENT

THAT THIS FUNCTION WILL RETURN TO.

I USER IN [T I AL I ZED TO THE USER' S CODE SEGMENT.)

8. THE EIGHTH DESCRIPTOR IS USED BY THIS FUNCTION TO

ESTABL[SH A CODE SEGMENT FOR ITSELF. THIS IS

NEEDED SO THAT TH IS FUNCT I ON CAN COMPLETE IT' S

EXECUT I ON WH I LE I N PROTECTED MODE. WHEN CONTROL

GETS PASSED TO THE USER'S CODE THIS DESCRIPTOR CAN

BE USED BY HIM IN ANY WAY HE CHOOSES.

NOTE EACH DESCRIPTOR MUST CONTAIN ALL THE NECESSARY DATA

I.E. THE LlMIT. 8ASE ADDRESS AND THE ACCESS RlGHTS BYTE.

AH= 89H (FUNCTi ON CALL)

ESISI

=

LOCATION OF THE GOT TABLE BUILD BY ROUTINE

USING THIS FUNCTION.

EXIT PARAMETERS:

AH

=

0 [F SUCCES SFUL

ALL SEGMENT REGISTERS ARE CHANGED. (AXl AND (BP) DESTROYED

CONSIDERATIONS:

I. NO B I OS AVA I LA8LE TO USER. USER MUST HANDLE ALL

I/O COMMANDS.

2. INTERRUPTS I NTERRUPT VECTOR LOCAT IONS MUS T BE

MOVED. DUE TO THE 286 RESERVED AREAS. THE

HARDWARE INTERRUPT CONTROLLERS MUST BE REINITIALIZED

TO DEFINE LOCATIONS THAT 00 NOT RESIDE IN THE 286

RESERVED AREAS.

3. EXCEPTION [NTERRUPT TABLE AND HANDLER MUST BE

INITlAL[ZEO BY THE USER.

THE INTERRUPT DESCRIPTOR TABLE MUST NOT OVERLAP

THE REAL MODE BIOS INTERRUPT DESCRIPTOR TABLE.

THE FOLLOWING GIVES AN IDEA OF WHAT THE USER CODE

SHOULD LOOK LIKE WHEN INVOKING THIS FUNCTION.

REAL MODE -->

VIRTUAL MODE --->

"USER CODE­

MOV

MOV

A X ,CiDT SECiMENT

ES,AX

MOV

MOV

MOV

MOV

S I • CiDT OFFSET

BH, HARDWARE I NT LEVEL 1 OFFSET

BL, HARDWARE I NT LEVEL 2 OFFSET

AH,89H

INT 15H

"USER CODE"

DESCRIPTION:

I. CLI (NO INTERRUPTS ALLOWED) WHILE THIS FUNCTION IS EXECUTING.

2. ADDRESS LINE 20 IS GATED ACTIVE.

3. THE CURRENT USER STACK SEGMENT DESCRIPTOR IS INITIALIZED.

4. THE GDTR IS LOADED WITH THE GOT BASE ADDRESS.

5. THE [DTR IS LOADED WITH THE [DT BASE ADDRESS.

6. THE 8259 IS RE I NIT I AL I ZED WITH THE NEW I NiERRUPT OFFSETS.

7. THE PROCESSOR I S PUT I N VIRTUAL MODE W[TH THE CODE

SEGMENT DESIGNATED FOR THIS FUNCTION.

8. DATA SEGMENT IS LOADED WITH THE USER DEFINED

SELECTOR FOR THE OS REG t STER .

9. EXTRA SEGMENT I S LOADED WITH THE USER DEF I NED

SELECTOR FOR THE ES REG I 5 TER .

10. STACK SEGMENT IS LOADED WITH THE USER DEFINED

SELECTOR FOR THE SS REG I STER.

CODE SEGMENT DESCRIPTOR SELECTOR VALUE IS

SUBSTITUTED ON THE STACK FOR RETURN TO USER.

12. WE TRANSFER CONTROL TO THE USER WITH INTERRUPTS 0 I SABLED.

BIOSI 5-173

IBM Personel Corn.puter MACRO Ass.rn.bler

BIOSI - - - 0&/10/85

Version 2.00

INTERRUPT ISH BIOS ROUTINES

135

13.

137

13.

13'

,.0

'"

"3

I ••

".

"6

I • •

150

151

152

153

15.

155

15.

" 7

15.

15.

,.,

I.'

,.7

I ••

I • •

170

171

172

173

17.

175

17.

177 0000

178 oooe

1790010

180 0018 lei 0020

182 0028

183 0030

184 0038

1185 0040

118&

" 87

1188

118903FA

1190 03FA

1191

1192

1193

119403FAFA

1195 03FB 84 OF

1 19& 03FD E8 03CC R

1197 0400 3C 00

1198 0402 74 04

1199 040484 FF

1200 0406 F9

1201 0407 CF

1202

1203

1204 0408

1205 0408 06

1206 0409 IF

1207

1208

1209

1210

1211

1212 040A 80 II

1213 040C E6 20

1214 040E E8 00

1215 0410 8A Cl

1216 0412 E6 21

1217 0414 E8 00

1218 041& 80 04

1219 0418 E6 21

1220 041A EB 00

1221 041C BO 01

1222 041E E& 21

1223 0420 EB 00

1224 0422 BO FF

1225 0424 E& 21

122&

1227

1228

1229

1230

1231 0426 80 I 1

1232 0428 E6 AO

1233 042A E8 00

1234 042C 8A C3

1235 042E E6 AI

1236 0430 BO 02

1237 0432 EB 00

1238 0434 E6 A I

1239 0436 EB 00

1240 0438 BO 01

1241 043A E6 AI

1242 043C EB 00

1243 043E BO FF

1244 0440 E& AI

1245

1246

1247

1248

1-12

06-10-8S

PAGE

I

;

THE FOLLOWING DIAGRAM DEPICTS THE ORGANIZATION

;

OF GOT.

;-----------------------------------------------------------------------------­

GOT

IES,SII--» .00 i

DUMMY .0.

1------

----------1 j

• I 0

I

GOT

1----------------1

I lOT

I

1----------------1

I

I os I

1

.2.

.30

I

ES

I

~~~~~~~~~~~~~~~i

.3. I---~~~;~~;~~----I

1 C5 1

1----------------1

1

;

I - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ---- -- -- - - - - - - - - ----- -­

;

------

-------- - - -

----------------

------ -

-

- - - -

-------------------

- ---­

; THE GL08AL DESCRIPTOR TABLE (ACTUAL LOCATION POINTED TO BY ES:S])

1----- - - - - -------------------------- - ------- - - - - - ------------------ - - - - - - - - - --­

VIRTUAL ENABLE GOT DEF STRUC

DQ?

GDTPTR

IDTPTR

USER os

USER-ES

USER-55

DO

DQ

DO

DO

DQ

USER-CS DO

BID CS DQ

7

V I RTUAL_ENABLE_GOT_DEF ENDS

; FIRST DESCRIPTOR NOT ACCESSIBLE

; GOT DESCRIPTOR

; lOT DESCR I PTOR

, USER DATA SEGMENT DESCRIPTOR

USER EXTRA SEGMENT OEseR I PTOR

USER STACK SEGMENT DESCRIPTOR

I USER CODE SEGMENT DESCR I PTOR

I TEMPORARY 8105 DESCRIPTOR

ASSUME OSIDATA

X VIRTUAL

SET_VMOOE:

PROC FAR

; - - - - ENA8LE ADDRESS LATCH BIT 20

CLI

"OV

CALL

COP

JZ

MOV

5TC

IRET

AH,ENABLE B1T20

GATE A20 ­

AL,O-

81T20 ON

AH,OFFH

NO I NTERRUPTS ALLOWED

ENA8LE 81T 20 FOR ADDRESS GATE

WAS THE COMMAND ACCEPTED?

GO IF YES

SET THE ERROR FLAG

SET CARRY

EARLY EXIT

8IT20 ON:

-

.0.

E5

05

; MOVE SEGMENT PO INTER i TO THE OAT A SEGMENT

I ~---~~~~-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - --­

; REINITIALIZE THE 8259 INTERRUPT CONTROLLER #1 TO THE USER SPECIFIED OFFSET

;

-- - - - - - - - -

--

- - - - - -

-

-------- - - - - -

--

- - - - - - - - - - - - - - -

--

- - -- - -

----

-

---

- - - - - - - - - - - -­

"OV

OUT

J"P

"OV

OUT

AL, I IH

INTAOO,AL

'.2

AL,8H

INTAOI,AL

JMP '.2

AL.04H MOV

.....

INTAOI,AL

1·2

NOV AL,OIH

OUT

JMf'

MOV iNTAOI,AL

1·2

AL.OFFH

INTAOI.AL OUT

START INITIALIZATION SEQUENCE-ICWI

EDGE, INTERVAL-8.MASTER,ICW4 NEEDED

HARDWARE INT'S START AT INT # (8H]

SEND ICW2

SEND ICW3 MASTER LEVEL 2

SEND ICW4 MASTER, 8086 MODE

I MASK OFF ALL INTERRUPTS

;---------- - - - ------

---------------

- - -- ------- -- --

----------------

--- - -- -

----­

; RE I NIT I AL I ZE THE 8259 I NTERRUPT CONTROLLER #2 TO THE USER SPEC I F I ED OFFSET :

;----------------------------------------------------------------------------­

I N I TI AL I ZE SEQUENCE- I CW 1 FOR SLAVE

EDGE,INTERVAL-8.MASTER,lCW4 NEEDED

"OV

OUT

JMP

AL, I IH

INTBOO.AL

1·2

AL,BL "OV

OUT INT80l,AL

MOV AL.02H

JMP

OUT .-

1·2

MOV

1·2

INTSO I ,AL

AL,OIH

OUT

"M.

MOV

OUT

INTBOI,AL

1·2

AL.OFFH

INTBOI,AL

HARDWARE INT'S START AT INT # {8LI

SEND ICW2

SEND ICW3 SLAVE LEVEL 2

I SEND lCW4 SLAVE,8086 MODE

I MASK OFF ALL INTERRUPTS

1---- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -­

; SETUP 810S CODE SEGMENT OESCR I PlOR

5-174 BIOS1

IBM P.rsonal Comput.r MACRO Aa ••mbler

BIOSI - - - 06/10/85 INTERRUPT

V.rsion 2.00

15H BIOS ROUTINES

1287

1288

1289

1290

1291

1292

1293

1294

1295

1296

1249

1250

1251

1252

1253

1254

1255

1256

1257

1258

1259

1260

1261

1262

0442

0447

044B

0450

0454

0459

045A

045A

1263

1264

1265

1266

0450

045A

045A

0450

1267

1268 0450

1269

1270

1271

1272

1273

045E

045E

0461

045E

045E

12740461

1275

1276 0461

1217

12780464

12790467

1280

1281

1282

0466

046A

046C 1283

1284

1285

1286

Of6C

046F

0471

0474

0476

0479

1297

1298

1299

1300

1301

1302

1303

1304

1305

1306

1307

1308

1309

1310

1311

1312

1313

1314

1315

1316

047B

047C

047F

0481

0482

0483

0483

0483

0484

0487

1317

1318 0487

13190487

1320 0486

1321

1322 0486

1323

C7 44 38 FFFF

C6 44 3C OF

C7 44 3A 0000

C6 44 3D 9B

C7 44 3E 0000

OF

8B 54 08

0 I

OF

88 5C 10

01

B8 QOOI

OF 01 FO

EA

046C R

0038

B8 0018

6E 08

B8 0020

6E CO

B6 0026

8E DO

5B

63 C4 04

6A 30

53

CB

F8

E9 0057 R

CF

1-13

06-10-85

MOV

MOV

MOV

MOV

MOV

[SIJ.BIO CS.SEG LlMIT,MAX SEG LEN J SET LENGTH

[51! .810:CS.BASE_HI_BYTE,CSEGi"_HI lSI .BIO_CS.BASE_LO_WORD,CSEGO_LO

; SET HIGH BYTE OF CS=OF

I SET LOW WORD OF CS=O

[~:

J

:~:g:g~:g~i~=~~~E~~~~;~,CPLO_CODE_AC~Ei~RO

RESERVED AREA

;---------- -----------

-

- -

----- ---------­

;

;

ENABLE PROTECTED MODE

----------------------- --- - -

--- --------­

LGDT [SI].GDTPTR

DB

170005 LABEL

MaV

770006 LA8EL

OOFH

BYTE

DX,WORO PTR ISI].GDTPTR

8YTE

ORG

DB

DRG

LlDT

DB

710007 LABEL

770008

MOV

LABEL

ORG

DB

ORG

OFFSET CS:??0005

001H

OFFSET CS: 110006

[SI].IOTPTR

OOFH

BYTE

BX,WORO PTR ISI].IDTPTR

BYTE

OFFSET CS: ??0001

OOIH

OFFSET CS: ??0008

, j LOAD GLOBAL DESCRIPTOR TABLE REGISTER

INTERRUPT DESCRIPTOR TABLE REGISTER

MOV

LMSW

DB

DB

OW

OW

~~.

V I RTUAL_ENABLE

OOFH,OOIH,OFOH

OEAH

OFFSET VMOOE

810_CS

MACHINE STATUS WORD NEEDED TO

SW I TCH TO V I RTUAL MODE

PURGE PRE-FETCH QUEUE WITH FAR ,JUMP

TO OFFSET

I N SEGMENT -PROTECTED MODE SELECTOR

VMODE,

I

,------

- - - - - - - - - - - - - - - - - - -

-

-

-------­

SETUP USER SEGMENT REGISTERS

1-------- -------------------------------­

MOV AX,USER OS

- - - - -

MOV DS,AX -

MOV

MOV

AX,USER ES

ES,AX­

:

I SETUP USER'S DATA SEGMENT

; TO PROTECTED MODE SELECTORS

; SETUP USER'S EXTRA SEGMENT

:

MOV AX,USER SS

MOV SS,AX­

-----

-

-

- - - -

---------------

- -

--

- -

-------­

PUT TRANSFER ADDRESS ON STACK

AND RETURN TO THE USER ;-----

- - - - - - - - -

-

-

--------

- - - - - - - -

-------­

POP 8X

ADO SP,4

PUSH

PUSH

RET

USER CS axt

I SETUP USER'S STACK SEGMENT

I GET RETURN IP FROM THE STACK

; NORMALIZE STACK POINTER

; SET STACK FOR A RETURN FAR

RETURN TO USER I N V I RTUAL MODE

X_VI RTUAL ENOP

;DEVICE BUSY AND INTERRUPT COMPLETE

;

;

,

I

;

----

THIS ROUTiNE IS A TEMPORARY HANDLER FOR DEVICE BUSY

AND I NTERRUPT COMPLETE

INPUT SEE PROLOGUE -----------------------------

- - --- ----- ------ ---- --- - - - - --­

DEVICE BUSY

CLC

"MP

DEV ICE_BUSY

PROC

CI F

ENOP

NEAR

TURN CARRY OFF

RETURN W J TH CARRY FLAG

I NT_COMPLETE

IRET

I NT _ COMFLETE

PROC

ENDP

NEAR

I RETURN

CODE ENDS

END

BIOS1

5-175

10

II

12

13

14

15

I .

11

18

19

20

21

22

23

24

25

2.

27

28

29

30

31

32

33

34

35

3.

37

38

39

.,

42

43

44

45

4.

47

48

49

50

51

52

53

.

,

58

55

5.

57

59

.0

.2

.3

.4

.5

••

• 7

54

• 8

.9

70

71

72

73

74

75

7.

77

78

79

80

81

B2

B3

B4

85

B6

B1

0000

0000 FB

0001 BO FC 06

0004 F5

000512 11

BB

89

0001 IE

OOOB E8 0000 E

OOOB 56

OOOC C 1 EB 08

90

91

92

OOOF 03 CO

0011 BBFO

93

94

95

96

91

9B

0013 FA

0014 2E: FF 94 0021 R

0019 FB

00 I A B4 00

OOIC 5E

OOlD IF

99 00 IE lOa OOIE CA 0002

101

102

103 0021 0031 R

104 0023 0042 R

105 0025 0050 R

106 0021 0015 R

101 0029 00A8 R

108 002B OOCB R

'09 00200104 R

110 002F 0145 R

11' : 0031

112

I 13 0031

[Bioi Personal Computer MACRO Asselllb[.,. Version 2.00

BIOS2 - - - 06/10/65 8105 INTERRUPT ROUTINES

0000

I-I

06-10-8S

PAGE 116.121

TITLE BIOS2 - -

.286C

.LlST

CODE

06/10/B5

SEGMENT BYTE PUBL I C

BIOS INTERRUPT ROUTINES

PUBL I C PR I NT SCREEN I

PUBLIC RTC INT

PUBLIC TIME OF DAY 1

PUBLIC TlMER_1NT_'­

EXTRN

EXTRN

EXTRN

Ct.40S READ: NEAR

CMOS-WR I TE: NEAR

DDS:NEAR

READ CMOS LOCATION ROUTINE

WR I TE CMOS LOCA T ION ROUT I NE

LOAD (OS, WITH DATA SEGMENT SELECTOR

[NT IA H -(TIME OF DAy) - - - - - - - - - - - - - - - - - - - - - - - - - ­

TH IS B [OS ROUT I NE ALLOWS THE CLOCKS TO BE SET OR READ

PARAMETERS:

(AH) = DOH READ THE CURRENT CLOCK SETT I NG AND RETURN WITH,

(CX) = HIGH PORTION OF COUNT

(OX) = LOW PORT I ON OF COUNT

(ALl = 0 TIMER HAS NOT PASSED 24 HOURS SINCE LAST READ

I I F ON ANOTHER DA Y. 1RESET TO ZERO AFTER READ)

I AH I 0 I H SET THE CURRENT CLOCK US [NG,

(CX) : HIGH PORTION OF COUNT lOX) = LOW PORT I ON OF COUNT.

(AHI

(AH)

NOTE: COUNTS OCCUR AT THE RATE OF 1193180/65536 COUNTS/SECOND

(OR ABOUT 18.2 PER SECOND -SEE EQUATES)

02H READ THE REAL TIME CLOCK AND RETURN WITH.

(CH) = HOURS IN BCD [00-23)

(CLl = MINUTES IN BCD (00-59)

(OH) = SECONDS IN BCD (00-59)

(OLl = DAYLIGHT SAVINGS ENABLE (OO-O( I.

SET THE REAL T I ME CLOCK US [NG,

ICH) : HOURS IN BCD (00-231

(CLl : MINUTES IN BCD [00-591

(DH) : SECONDS IN BCD (00-59)

(OLl : 01 IF DAYLIGHT SAVINGS ENABLE OPTION. ELSE 00.

NOTE: (DL): 00 IF DAYLIGHT SAVINGS TIME ENABLE IS NOT ENABLED.

(DLI: 01 ENABLES TWO SPECIAL UPDATES THE LAST SUNDAY IN

APRIL (1;59;59 --> 3:00:00 AMI AND THE LAST SUNDAY IN

OCTOBER 11 :59:59

-->

1 :00:00 AMI THE FIRST TIME.

(AH) 04H READ THE DATE FROM THE REAL T I ME CLOCK AND RETURN WITH,

(CH) = CENTURY IN BCD (19 OR 201

(CLI = YEAR IN BCD (00-991

(DH I = MONTH I N BCD 101 I 21

(OLI = DAY IN BCD (01-31).

I AH 1

(AHI

OSH SET THE DATE I NTO THE REAL T I ME CLOCK US I NG.

(CHI = CENTURY IN BCD (19 OR 201

(CLl = YEAR IN BCD 100 99)

(DH) = t.40NTH IN BCD (01

(DLI = DAY IN BCD (01-311 .

121

SET THE ALARM TO INTERRUPT AT SPECIFIED TIME,

(CHI = HOURS IN BCD (00-23 {OR FFHII

(CLl : MINUTES IN BCD (00-59 lOR FFH) I

(OH) : SECONDS IN BCD (00-59 lOR FFHJ I .

IAHI : 01H RESET THE ALARM INTERRUPT FUNCTION •

NOTES: FOR ALL RETURNS CY= 0 FOR SUCCESSFUL OPERAT ION.

FOR IAHI= 2, 4, 6 CARRY FLAG SET IF REAL TiME CLOCK NOT OPERATING.

FOR (AH 1 = 6 CARRY FLAG SET I F ALARM ALREADY ENABLED.

FOR THE ALARM FUNCT I ON (AH : 6 I THE USER t.4UST SUPPLY A ROUT I NE AND

INTERCEPT THE CORRECT ADDRESS IN THE VECTOR TA8LE FOR INTERRUPT 4AH.

USE OFFH FOR ANY "DO NOT CARE~ POSITION FOR INTERVAL INTERRUPTS.

INTERRUPTS ARE DISABLED DURING DATA MODIFICATION.

;

AH & AL ARE RETURNED MOD IF! ED AND NOT DEF I NED EXCEPT WHERE I NO I CATED. -----------------

-

-------- -

-

- -

- - -

- - - - - ----------------------------­

ASSUt.4E CS;CODE,OS:DATA

PROC FAR TiME OF DAY I

-ST 1­

CMP

CMC

JC

AH,IRTC_TBE-RTC_TB) /2

TIME_9

I NTERRUPTS BACK ON

CHECK IF COMMAND IN VALID RANGE

COMPLEt.4ENT CARRY FOR ERROR EX I T

EXIT WITH CARRY: I IF NOT VALlO

PUSH

CALL

PUSH

SHR

ADO

MOV

CLI

CALL

TIME_9:

ST I

MOV

POP

POP

OS

ODS

51

AX,8

AX ,AX

SI,AX

CS:[SIJ+OFFSET RTC_TB

AH,O

51

OS

SAVE USERS (OS) SEGMENT

GET OAT A SEGMENT SELECTOR

SAVE WORK REGI STER

CONVERT FUNCTl ON TO BYTE OFFSET

CONVERT FUNCTION TO WORD OFFSET (CY=OI

PLACE INTO ADDRESSING REGISTER

NO I NTERRUPTS OUR I NG T I ME FUNCT IONS

VECTOR TO FUNCTION REQUESTED WITH CY=O

RETURN WITH CARRY FLAG SET FOR RESULT

INTERRUPTS BACK ON

CLEAR I AHI TO ZERO

RECOVER USERS REG I STER

RECOVER USERS SEGMENT SELECTOR

RETURN WITH CY: 0 IF NO ERROR

RTC_ TB Ow

OW

OW

OW

OW

OW

OW

OW

RTC_TBE EQU

RTC 00

RTC-10

RTC-20

RTC-30

RTC-40

RTC-50

.

ROUT I NE VECTOR TABLE (AH):

READ CURRENT CLOCK COUNT

SET CLOCK COUNT

REAO THE REAL T I ME CLOCK T I ME

SET REAL T I ME CLOCK T I t.4E

READ THE REAL T I ME CLOCK DATE

SET REAL T I ME CLOCK DA, TE

SET THE REAL T (ME CLOCK ALARM

RESET ALARM

5-176 BIOS2

IBM Personal Computer M"CRO "ssembler

8IOS2 - - - 06/10/85 810S

Veralon 2.00

INTERRUPT ROUTINES

114

115

116

0031

0031 "0 0010 R

117 0034 C6 Ob 0070 R 00

118 0039 88

OE

006E R

1 19 0030 88 I b 006C R

120 0041 C3

121

122 0042

123 0042 89 16 006C R

124 004b 89 OE 006E R

125 004" C6 06 0070 R 00

126 004F C3

127

128 0050

129 0050 E8 0168 R

130 0053 72 1 F

131

132 0055 80 00

133 0057 E8 0000 E

134 005" 8A FO

135 005C 80 08

13b 005E E8 0000 E

137 OOb I 24 01

138 00b3 8A DO

139 00b5 80 02

140 00b7 E8 0000 E

141 006" 8A C8

142 006C 80 04

143 006E E8 0000 E

144 0071 8" E8

145 0073 F8

146 0074

147 0074 C3

148

149 0075

150 0075 E8 0168 R

151 0078 13 03

152 001A E8 0154 R

153 0070

154 0010 8" E6

155 00 lF 80 00

15b 0081 E8 0000 E

151 0084 8" EI

158 0086 80 02

159 0088 E8 0000 E

160 0088 8A E5

\61 0080 eo

04

162 008F E8 0000 E

163 0092 88 0808

164 0095 E8 0000 E

165 0098 24 62

166 009" OC 02

167 009C 80 E2 01

168 009F OA C2

Ib9 00"1 86 EO

110 00A3 E8 0000 E

111 OOAb F8

172 00A7 C3

173

174 00A8

175 00A8 E8 a

I 68 R

176 00A8 12 10

177

178 OOAD 80 07

179 OOAF E8 0000 E

180 0082 8A DO

181 0084 80 08

182 0086 E8 0000

183 0089 8A FO

184 0088 80 09

E

185 0080 E8 0000 E

186 OOCO 8A C8

1151 00C2 80 32

188 00C4 E8 0000 E

189 OOCl 8A E8

190 00C9 F8

191 OOCA

192 OOCA C3

193

194 OOC8

195 00C8 E8 0168 R

196 OOCE 73 03

191 0000 E8 0154 R f 98 0003

199 0003 88 0006

200 OOob E8 0000 E

201 0009 8A E2

202 0008 80 OT

203 0000 E8 0000 E

204 OOEO 8A E6

205 00E2 80 08

206 00E4 E8 0000 E

201 00E7 8A El

208 00E9 80 09

209 OOES E8 0000 E

210 OOEE 8A E5

211 OOFO BO 32

212 00F2 E8 0000 E

213 00F5 B8 OBOB

214 00F8 E8 0000 E

215 00F8 24 7F

216 OOFD 86 EO

217 OOFF £8 0000 E

218 0102 F8

219 0103 C3

22.

221 0104

222 0104 80 08

223 0 I 06 E8 0000 E

224 0109 A8 20

225 0 I OB F9

226 01 OC 75 33

227

PAGE

RTC_OO PROC

MOV

MOV

MOV

MOV

RET

CALL

JNC

CALL

MOV

CAL.L

MOV

MOV

CALL.

MOV

MOV

CALL

MOV

MOV

CAL.L.

MOV

MOV

CALL

MOV

CALL

ANa

XCHG

CALL

CLC

RET

CALL

JC

MOV

CALL

MOV

MOV

CALL

MOV

MOV

CALL.

MOV

MOV

CAL.L

MOV

CLC

RET

CALL

JNC

CALL.

MOV

MOV

CAL.L.

MOV

MOV

CALL

MOV

MOV

CAL.L.

MOV

CALL

ANa

OR

ANa

OR

XCHG

CALL.

CLC

RET

MOV

CALL

TEST

STC

JNZ

MOV

MOV

MOV

RET

CALL

JC

MOV

CALL

MOV

MOV

CALL

ANa

MOV

MOV

CAL.L.

MOV

MOV

CAL.L.

MOV

CLC

RET

NEAR

AL.OT I MER OFL

OTIMER orC,o

CX,OTlMER HIGH

OX, or

I MER:LOW

UPO IPR

RTC:29

~~O;M~~A~ECONDS

DH,AC

AL, CMOS REG 8

CMOS READ -

AL. 0000000 I B

DL,AL

AL., CMOS MINUTES

CMOS READ

CL,AC

AL., CMOS HOURS

CMOS READ

CH,AC

UPD IPR

RTC-35

RTC=STA

AH,oH

AL, CMOS SECONDS

CMOS WRTTE

AH,CC

AL., CMOS MINUTES

CMOS WRITE

AH,CH

AL., CMOS HOURS

CMOS WRITE

AX, XTCMOS REG 8

CMOS READ-

AL , oTIOOOI08

AL,OOOOOOIOB

OL

I

0000000 I 8

"L,DL

AH,AL

CMOS_.RITE

UPD IPR

RTC=49

AL.,CMOS DAY MONTH

CMOS READ -

DL , " [

AL

I

CMOS MONTH

CMOS READ oH,A[

AL.,CMOS YEAR

CMOS READ

CL.,A[

~~o;M~~AgENTURY

CH,A[

UPD I PR

RTC-55

RTC=STA

AX

I

CMOS DAY WEEK

CMOS WRITE -

AH,D[

~~O;M~~I~:Y

_MONTH

AH,DH

AL.,CMOS MONTH

CMOS WRTTE

AH,CC

~~O;M~~Ii~AR

AH,CH

AL,CMOS CENTURY

CMOS WRTTE

AX, XTCMOS REG 8

CMOS REAO-

AL.OTFH

AH,AL

CMOS_WRITE

AL,CMOS REG 8

CMOS READ -

AL..20H

'-2

06-10-85

READ T I ME COUNT

GET THE OVERFLOW FLAG

AND THEN RESET THE OVERFLOW FLAG

GET COUNT OF TIME HJGH WORD

GET COUNT OF' TI ME LOW WORD

RETURN WITH NO CARRY

SET T I ME COUNT

SET TiME COUNT LOW WCRo

SET THE T I ME COUNT HIGH WORD

RESET OVERFL.OW FLAG

RETURN WITH NO CARRY

GET RTC TIME

CHECK FOR UPOA TE I N PROCESS

EXIT IF ERROR ICY= II

SET ADDRESS OF SECONDS

GET SECONDS

SAVE

ADDRESS ALARM REG I STER

READ CURRENT VAL.UE OF DSE BIT

MASK FOR VALID DSE BIT

SET (DLI TO ZERO FOR NO DSE BIT

SET ADDRESS OF MINUTES

GET MINUTES

SAVE

SET ADDRESS OF HOURS

GET HOURS

SAVE

SET CY.. 0

I RETURN WITH RESULT IN CARRY FLAG

SET RTC TIME

CHECK FOR UPDATE IN PROCESS

GO AROUND IF CLOCK OPERATING

ELSE TRY INITIALIZING CLOCK

GET TIME BYTE SECONDS

ADDRESS SECONDS

UPDATE SECONDS

GET TJME 8YTE MINUTES

ADDRESS MINUTES

UPDATE. MINUTES

GET TIlE BYTE HOURS

ADDRESS HOURS

UPDATE ADDRESS

ADDRESS AL.ARt.4 REG I STER

READ CURRENT VALUE

MASK FOR VALlO BIT POSITIONS

TURN ON 24 HOUR MODE

USE ONL.Y THE DSE 81T

GET DAY LIGHT SAVINGS TIME BIT (DSE)

PLACE I N WORK REG I STER AND GET ADDRESS

SET NEW ALARM BITS

SET CY= 0

RETURN WITH CY= a

GET RTC DATE

CHECK FOR UPDATE I N PROCESS

EXIT IF ERROR ICY= II

ADDRESS DAY OF MONTH

READ DAY OF MONTH

SAVE

ADDRESS MONTH

READ MONTH

SAVE

ADDRESS YEAR

READ YEAR

SAVE

ADDRESS CENTURY LOCAT I ON

GET CENTURY BYTE

SAVE

SET CYaO

RETURN I I TH RESULTS I N CARRY FLAG

SET RTC DATE

CHECK FOR UPDATE

GO AROUND

IN PROCESS

I F NO ERROR

ELSE INITIALIZE CLOCK

ADDRESS OF DAY OF WEEK BYTE

LOAD ZEROS TO DA Y OF" WEEK

GET DAY OF MONTH BYTE

ADDRESS DAY OF" MONTH BYTE

WRITE OF DAY OF MONTH REGISTER

GET MONTH

ADDRESS MONTH BYTE

WR I TE t.40NTH REG I STER

GET YEAR BYTE

ADDRESS YEAR REGI STER

WR I TE YEAR REG I S TER

GET CENTURY BYTE

ADDRESS CENTURY BYTE

WR I TE CENTURY LOCAT I ON

ADDRESS ALARM REG I STER

READ CURRENT SETT I NGS

CLEAR 'SET BIT'

MOVE TO WORK REGISTER

AND START CLOCK UPDATING

SET CY= 0

RETURN CY"O

SET RTC ALARM

ADDRESS ALARM

READ ALARM REGI STER

CHECK FOR ALARM ALREADY ENABLED

SET CARRY I N CASE OF ERROR

ERROR EX I T I F ALARM SET

BIOS2 5-177

IBM Persona! Computer MACRO Assembler Version 2.00

BIOS2 ---06/10/85 BIOS INTERRUPT ROUTINES

228 alOE E8 o 16B R

229 o I I I 13 03

230 01 13 E8 0154 R

231 0116

2'2 01 16 8A E5

233 a

I 18 BO 01

2'4 a

I IA E8 0000 E

235 0110 8A EI

2'5

01 IF BO 0'

237 0121 E8 0000 E

2'8 0124 8A E5

239 0126 80 05

240 0128 E8 0000 E

241 012B E4 AI

242 0120 24 FE

24' 012F E6 AI

244 0131 B8 OBOB

245 0134 E8 0000 E

245 0137 24 1F

241 0139 DC 20

248 0138 86 EO

249 013D E8 0000 E

250 0140 F8

251 0141

252 0141 B8 0000

25' 0144 C3

254

255 0145

255 0145 88 OB08

251 0148 E8 0000 E

258 014B 24 51

259 0140 86 EO

250 014F E8 0000 E

25 I 0152 F8

252 0153 C3

25'

264 0154

255

255 0154

251 0154 88 260A

258 0157 E8 0000 E

259 a 15A B8 820B

210 0150 E8 0000 E

211 0160 BO OC

212 0162 E8 0000 E

21' 0165 BO 00

214 0167 E8 0000 E

215 a 16A C3

215

211 0168

218

219 o

16B

280 0168 51

281 016C 89 0320

282 016F

28' a 16F 80 OA

284 0111 FA

285 0172 E8 0000 E

285 0115 A8 80

281 Of 77 14 05

288 0119 FB

289 Ol7A E2 F'

290 017C 33 CO

291 ailE F9

292 OllF

293 o 11F 59

294 0180 FA

295 0181 C,

296

291 0182

CALL

JNC

CALL

RTC 65:

MOV

MOV

CALL

MOV

MOV

CALL

MDV

MDV

CALL

IN

AND

OUT

MOV

CALL

AND

OR

XCHG

CALL eLe

MDV

RET

MOV

CALL

AND

XCHG

CALL

CLC

RET

RTC_OO ENDP

MOV

CALL

MOV

CALL

MOV

CALL

MOV

CALL

RET

RTC STA ENDP

PUSH

MDV

MOV

CL I

CALL

TEST

JZ

ST!

LOOP

XOR

STC

POP

CLI

RET

UPD IPR ENDP

UPD IPR

RTC-65

RTC::::STA

AH,DH

AL, CMOS SEC ALARM

CMOS WRITE -

AH,CC

AL, CMOS MIN ALARM

CMOS WRTTE -

AH,cFi

AL, CMOS HR ALARM

CMOS WRTTE­

AL,INTBOI

AL,OFEH

INTBO I ,AL

~~o~*~~~~_REG_B

AL,OlFH

AL,20H

AH,AL

CMOS_WR I TE

AX,O

AX.X*CMOS REG B

CMOS READ-

AL,51H

AH,AL

CMOS_WR I TE

NEAR

CX cX,eoo

AL,CMOS_REG_A

CMOS READ

AL,8QH

UPD_90

UPD 10

AX.Ax

CX

1-'

06-10-85

NEAR

AX,26H*H+CMOS REG A

CMOS WRITE -

AX,82H-H+CMOS REG B

CMOS WR I TE -

AL. CMOS REG C

CMOS READ -

AL. CMOS REG 0

CMOS_READ -

CHECK FOR UPDATE I N PROCESS

SKIP INITIALIZATION IF NO ERROR

ELSE INITIALIZE CLOCK

GET SECONDS BYTE

ADDRESS THE SECONDS ALARM REG [STER

I NSERT SECONDS

GET MINUTES PARAMETER

ADDRESS MINUTES ALARM REGISTER

INSERT MINUTES

GET HOURS PARAMETER

ADDRESS HOUR ALARM REG I STER

I NSERT HOURS

READ SECOND I NTERRUPT MASK REGISTER

ENABLE ALARM T I MER BIT I CY= 0)

WRITE UPDATED MASK

ADDRESS ALARM REG [STER

READ CURRENT ALARM REG [STER

ENSURE SET 81 T TURNED OFF

TURN ON ALARM ENABLE

MOVE MASK TO OUTPUT REG I STER

WR I TE NEW ALARM MASK

SET CY= 0

CLEAR AX REG I STER

RETURN WITH RESULTS [N CARRY FLAG

RESET ALARM

ADDRESS ALARM REGISTER (TO 80TH AH,AL)

READ ALARM REG I STER

TURN OFF ALARM ENABLE

SAVE DATA AND RECOVER ADDRESS

RESTORE NEw VALUE

SET CY= 0

RETURN WITH NO CARRY

INITIALIZE REAL TIME CLOCK

ADDRESS REGISTER A AND LOAD DATA MASK

INITIALIZE STATUS REGISTER A

SET ·SET BIT" FOR CLOCK INITIALIZATION

AND 24 HOUR MODE TO REG I STER B

ADDRESS REGISTER C

READ REGISTER C TO INITIALI ZE

ADDRESS REGISTER D

READ REG I STER D TO I N I TI AL.I ZE

WA ITT I LL UPDATE NOT I N PROGRESS

SAVE CALLERS REGI STER

SET TIMEOUT LOOP COUNT

ADDRESS STATUS REG I STER A

NO TIMER INTERRUPTS DURING UPDATES

READ UPDATE IN PROCESS FLAG

IF UIP BIT IS ON I CANNOT READ TIME)

EXIT WITH CY= 0 IF CAN READ CLOCK NOW

ALLOW [NTERRUPTS WH I LE WA I T [NG

LOOP TILL READY OR TIMEOUT

CLEAR RESULTS I F ERROR

SET CARRY FOR ERROR

RESTORE CALLERS REG I STER

I NTERRUPTS OFF OUR I NG SET

RETURN WITH CY FLAG SET

5-178 BIOS2

IBM Peraonal Computer MACRO Assembler Veralon 2.00

BIOS2 - - - ObllO/65 BIOS INTERRUPT ROUTINES

1-4

Ob-l0-85

298

299

300

301

302

303

304

305

30.

301

308

309

310

311

312

313

314 0162

315 0162 IE

316 0163 50

317 0164 57

318

319 0165

320 0165 B8 8B8C

321 0166 E6 10

322 016A 90

323 0 I 6B E4 11

324 0180 A8 60

325 0 I 8F 14 40

32.

327 0191 86 EO

328 0193 E6 70

329 0195 90

330 0196 E4 71

331 0198 22 C4

332 019A A6 40

333 019C 7430

334

335

33.

331 019E E8 0000 E

338 OIAI 81 2E 009C R 0300

339 01A7 83 IE 009E R 00

340 OIAC 73 20

341

342

343

344 01 AE 50

345 0 I AF 86 6B8B

346 0182 Eb 10

341 0184 90

348 0185 E4 11

349 0181 24 BF

350 0189 86 C4

351 01BB E6 10

352 01BO 86 C4

353 OIBF E6 71

354 OICI C6 06 OOAO R 00

355 0 rC6 C5 3E 0098 R

356 OICA C6 05 80

357 OICD 58

358 0 I CE

359 0 I CE A8 20

3., 0100 74 OA

362 0102 BO 00

363 0104 E6 10

364 0106 FB

365 0107 52

366 0 I 06 CD 4A

367 OIDA 5A

368 OIDB FA

369 0 I DC

370 OIDC EB A7

311

312

373 OIDE

374 OIDE BO 00

375 DIED E6 10

316 0lE2 90 20

317 0lE4 E6 AD

318 0lE6 E6 20

379 0lE8 5F

380 0 I E9 58

381 OlEA IF

382 OIEB CF

383

384 OIEC

PACiE

; - - - HARDWARE INT 10 H -( IRQ LEVEL 8

ALARM I NTERRUPT HANDLER (RTC)

J -------------------------­

THIS ROUTINE HANDLES THE PERIODIC AND ALARM INTERRUPTS FROM THE CMOS

TIMER. INPUT FREQUENCY IS 1.024 KHZ OR APPROXIMATELY 1024 INTERRUPTS

EVERY SECOND FOR THE PER I 00 I C INTERRUPT. FOR THE ALARM FUNCT I ON,

THE INTERRUPT WILL OCCUR AT THE DESIGNATED TIME.

INTERRUPTS ARE ENABLED WHEN THE EVENT OR ALARM FUNCTION IS ACTIVATED.

FOR THE EVENT INTERRUPT, THE HANDLER WILL DECREMENT THE WAIT COUNTER

AND WHEN IT EXPIRES WILL SET THE DESIGNATED LOCATION TO 80H. FOR

THE ALARM INTERRUPT, THE USER MUST PROV I DE A ROUT! NE TO INTERCEPT

THE CORRECT ADDRESS FROM THE VECTOR TABLE INVOKED BY INTERRUPT 4AH

PR I OR TO SETT I NG THE REAL T I ME CLOCK ALARM I I NT I AH, AH= 06HJ.

RTC I NT PROC

PUSH

PUSH

PUSH

RTC I 11

MOV

OUT

Nap

IN

TEST

JZ

FAR

OS

AX

01

ALARM JNTERRUPT

LEAVE INTERRUPTS

SAVE REG 1 STERS

01 SA8LED

; CHECK FOR SECOND INTERRUPT

AX, (CMOS RECi B-+NMI J ·H-+CMOS REG C-+NMI • ALARM AND STATUS

CMOS PORT, AL -

-

; WR [TE ALARM FLAG MASK ADDRESS

; I!ODELAY

AL,CMOS DATA

AL, 0 I 1000009

RTC_I_9

• READ AND RESET INTERRUPT REQUEST FLAGS

; CHECK FOR E [THER J NTERRUPT PEND I NG

; EXIT IF NOT A VALID RTC INTERRUPT

XCHG

OUT

NOP

IN

AND

TEST

JZ

AH,AL

CMOS _PORT, AL

AL ,CMOS DATA

AL,AH -

AL,OIOOOOOOB

RTC I 5

SAVE FLAGS AND GET ENABLE ADDRESS

WR I TE ALARM ENABLE MASK ADDRESS

I/O DELAY

READ CURRENT ALARM ENABLE MASK

ALLOW ONLY SOURCES THAT ARE ENABLED

CHECK FOR PERIODIC INTERRUPT

SKIP IF NOT A PERIODIC INTERRUPT

; - - - - DECREMENT WAIT COUNT BY INTERRUPT INTERVAL

CALL

SUB sBB

JNC

DOS

ORTC LOW, 0976

ORTC-HIGH,O

RTC

T

5

I ESTABLISH DATA SEGMENT ADDRESSABILITY

I DECREMENT COUNT LOW BY , /1024

I ADJUST HI CiH WORD FOR LOW WORD BORROW

; SKIP TILL 32 91T WORD LESS THAN ZERO

1----TURN OFF PERIODIC INTERRUPT ENABLE

PUSH

MOV

OUT

NDP

IN

AND

XCHG

OUT

XCHG

OUT

MOV

LOS

MOV

RTC I 51

PDP

TEST

JZ

.OV

OUT sTi

PUSH

INT

POP

CLI

RTC_I_1:

JMP

AX

AX,X· (CMOS REG B-+NMI

CMOS_PORT

,AL -

AL,CMOS DATA

AL,OBFH-

AL,AH

CMOS PORT, AL

AL,AH

CMOS DATA.AL

ORTC-WAIT FLAG,O

Dl,oiORD PTR ilUSER FLAG

8YTE PTR (01] ,80H -

AX

AL,OOIOOOOOB

RTC_I_7

AL,CMOS REG 0

CMOS_PORT ,AC

OX

4AH

OX

J

SAVE INTERRUPT FLAG MASK

I NTERRUPT ENABLE REG I S TER

WR ITE ADDRESS TO CMOS CLOCK

I/O DELAY

READ CURRENT ENABLES

TURN OFF PIE

GET CMOS ADDRESS AND SAVE VALUE

ADDRESS REG I STER B

GET NEW I NTERRUPT ENABLE MASK

SET MASK IN INTERRUPT ENABLE REGISTER

SET FUNCT [ON ACT I VE FLAG OFF

SET UP (05:011 TO POINT TO USER FLAG

TURN ON USERS FLAG

GET I NTERRUPT SOURCE BACK

TEST FOR ALARM INTERRUPT

SK I P USER I NTERRUPT CALL I F NOT ALARM

POINT TO DEFAULT REAO ONLY REGISTER

ENABLE NMI AND CMOS ADDRESS TO OEFAUL T

I NTERRUPTS BACK ON NOW

TRANSFER TO USER ROUT I NE

8LOCK INTERRUPT FOR RETRY

RESTART ROUTINE TO HANDLE DELAYED

ENTRY ANO SECOND EVENT BEFORE DONE

RTC I 9:

MOV

OUT

MOV

OUT

OUT

POP

POP

POP

IRET

RTC_INT ENOP

AL, CMOS REG 0

CMOS PORT, AL

AL,EQI

INTBoo,AL lNTAOO,AL

01

AX

OS

EX I T NO PEND I NG INTERRUPTS

POINT TO DEFAULT READ ONLY REGISTER

ENABLE NMI AND CMOS ADDRESS TO DEFAULT

END OF I NTERRUPT MASK TO 8259 2

TO 8259 2

TO 8259 1

RESTORE REG J STERS

I ENO OF INTERRUPT

BIOS2

5-179

IBM Personal Comput.,. MACRO A •• embler

BIOS2 ---06/10/85

Version 2.00

BIOS INTERRUPT ROUTINES

305

3B.

3B7

3BB

3B'

3.0 3.,

3'2 3.3

3'4

3.5

3 ••

3.T

3'B

3 ••

400

401

402

403 OIEC

404

405 OIEC IE

40. OlEO 50

40T OIEE 53

40B OIEF 51

40' o !FO 52

410 OIFt E8 0000 E

411 0!F4 80 3E 0100 R 01

412 0!F9 74 74

413 O!FB C6 06 0100 R 01

414 0200 FB

415 020. B4 OF

41. 0203 CD 10

41 T

41B

41' 0205 8A CC

420 0207 8A 2E 0084 R

421 020B FE C5

422

423

424

42S

42.

427

42B

42.

430 0200 33 02

43' 020F B4 02

432 02.. CD 17

433 02.3 80 F04 80

434 0216 Fa C04 AD

435 02.9 75 04E

43.

437 021B E8 0275 R

43B

439 021E 51

440 021F B4 03

44. 0221 CO 10

442 0223 59

443 0224 52

444 0225 33 02

445

44.

44T

44B

449 0227

450 0227 B4 02

451 0229 CD 10

452 022B B4 08

453 0220 CD 10

4504 022F OA CO

455 0231 75 02

456 0233 BO 20

457 0235

458 0235 52

459 0236 33 02

460 0238 32 E4

46' 023A CO 17

462 023C 5A

463 0230 F6 C4 29

464 0240 75 22

465 0242 FE C2

466 0244 3A CA

467 0246 75 OF

466 0246 32 02

469 024A 8A E2

470 024C 52

471 0240 E8 0275 R

472 0250 5A

413 0251 FE C6

414 0253 3A EE

0475 0255 15 DO

4T.

0411 0257 5A

'to78 0258 B4 02

479 025A CO ! 0

480 025C FA

0481 0250 C6 06 0100 R 00

0482 0262 EB OB

4B3

484 0264

0485 02604 5A

486 0265 B4 02

487 0267 CD 10

488 0269 ,

489 0269 FA

490 026A C6 06 0100 R FF

491 026F

492 026F 5A

493 0210 59

494 0271 5B

495 0272 58

496 0273 IF

497 0274 CF

498 0275

1-5

06-10-85

PAGE

; - - INT 05 H - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ­

PR I NT SCREEN

THIS LOGIC WILL BE INVOKED BY INTERRUPT 05H TO PRINT THE SCREEN.

THE CURSOR POSITION AT THE TIME THIS ROUTINE IS INVOKED WILL BE

SAVED AND RESTORED UPON COMPLETION. THE ROUTINE IS INTENDED TO

RUN WITH I NTERRUPTS ENABLED. I F A SUBSEQUENT PR I NT SCREEN KEY

IS DEPRESSED WHILE THIS ROUTINE IS PRINTING IT WILL BE IGNORED.

THE BASE PRINTERS STATUS IS CHECKED FOR NOT BUSY AND NOT OUT OF

PAPER. AN INITIAL STATUS ERROR WILL ABEND THE PRINT REQUEST.

ADDRESS 0050:0000 CONTAINS THE STATUS OF THE PRINT SCREEN:

50: 0 = 0 PR I NT SCREEN HAS NOT BEEN CALLED OR UPON RETURN

FROM A CALL THIS INDICATES A SUCCESSFUL OPERATION.

= I PRINT SCREEN IS IN PROGRESS IGNORE THIS REQUEST.

;

;

= 255 ERROR ENCOUNTERED DURING PRINTING. -

- - - -

------

- - - - - - - -

---

---- - - - - - - - - - - - - -

-

-

--

- - - - - - ---

-------------

- -- - - - - - - - -

--­

PR I NT_SCREEN I PROC FAR

PUSH

PUSH

PUSH

PUSH

PUSH

CALL

CMP

"E

MOY

ST I

MOY

INT

OS

AX ex

CX

OX

DDS

ClSTATUS_BYTE.1

PRI90

"'"STATUS_BYTE. 1

AH,OFH

10H

; DELA Y I NTERRUPT ENABLE TILL FLAG SET

SAVE WORK REGISTERS

USE 0040:0100 FOR STATUS AREA STORAGE

GET STATUS BYTE DATA SEGMENT

SEE IF PRINT ALREADY IN PROGRESS i EX I T [F PR [NT ALREADY [N PROGRESS

I INDICATE PR[NT NOW [N PROGRESS i MUST RUN W[TH [."ITERRUPTS ENABLED

; WILL REQUEST THE CURRENT SCREEN MODE

(ALI = MODE

(AH)= NUMBER COLUMNS/LINE

MOY

IBHI= VISUAL PAGE

W[LL MAKE USE OF I CX) REG I STER TO

MOY

CL.AH

CH.ltROWS CONTROL ROWS ON SCREEN & COLUMNS

ADJUST ROWS ON DISPLAY COUNT INC

;

;

CH

(CLI = NUMBER COLUMNS/LINE

-------- ------ - - - - - - - - - - -- - - - - - - - - -

(CHI = NUMBER OF ROWS ON 01 SPLAY ------

-

----

-

-----

AT THIS POINT WE KNOW THE COLUMNS/LINE COUNT

- -- - - - - - - - -­

15 IN (CLl :

AND THE NUMBER OF ROWS ON THE DISPLAY IS IN (CHI.

THE PAGE IF APPLICABLE [S [N (BHI. THE STACK HAS

(05). (AX), (BX), (CX), (OX) PUSHED.

~~~-----~~~~~--

- - - - - - - - - - - - - - - - - -

-;

~ ~~ ~

-;;

~ ~~~;-

---------

- - - - - -­

MOV

[NT

XOR

TEST

.JNZ

AH,02H

17H

AH,080H

AH,OAOH

PRIBO

SET PRINTER STATUS REQUEST COMMAND

REQUEST CURRENT PR [NTER STATUS

CHECK FOR PRINTER BUSY INOT CONNECTED

OR OUT OF PAPER

ERROR EX[T IF PR[NTER STATUS ERROR

I

CALL I CARR I AGE RETURN LINE FEED TO PR INTER CRLF

PRIIOI

PRIZO:

PRll0:

PR [80:

POP

"OY

INT eLi

PR190;

POP

POP

POP

POP

POP

IRET

PRINT_sCREEN_I

PUSH

XOR

XOR

INT

POP

TEST

JNZ

INC

C"P

JNZ

XOR

"OY

PUSH

CALL

POP

INC

CMP

JNZ

POP

MOY

INT

CLI

MOY

JMP

PUSH

MOV

INT

POP

PUSH

CX

AH,03H

10H

CX

OX

; SAVE SCREEN BOUNDS

, NOW READ THE CURRENT CURSOR POSITION

= AND RESTORE AT END OF ROUTINE i RECALL SCREEN BOUNDS

; PRESERVE THE ORIGINAL POSITION

I

XOR

;

DX.DX ; INITIAL CURSOR (0.0) AND F[RST PRINTER ---

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- - --

--

- - - -

---

- - - - - - -­

TH I SLOOP 15 TO READ EACH CURSOR POsl T I ON FROM THE :

;

;

-

SCREEN AND PRINT IT. (BH)= VISUAL PAGE (CH)= ROWS -

- - - -

-

- - - - - - -

----------

-

---

- - - - - - - - - - - -- - - ------ - - - - - - - - ---

-

- -­

MOY

INT

MOY

INT

OR

JNZ

MOY

AH.OZH

10H

AH.08H

10H

AL,AL

PRIZO

AL, '

INDICATE CURSOR SET REQUEST

NEW CURSOR POS I TI ON ESTABLI SHED

INDICATE READ CHARACTER FROM DISPLAY

CHARACTER NOW IN (All

SEE IF VALID CHAR

JUMP IF VALID CHAR

ELSE MAKE I T A BLANK

OX

DX,DX

AH,AH

I TH

DX

AH,29H

PRI70

DL

CL,DL

PRJ 10

DL,DL

AH,OL

DX

CRLF

OX

DH

CH.DH

PRIIO

OX

AH.OZH

10H

OSTATUS BYTE,O

SHORT PR[90

OX

AH,02H

"H

","STATUS_BYTE.OFFH

OX

CX

BX

AX

05

ENDP

SAVE CURSOR POSITION

INDICATE FIRST PRINTER (DX= 01

INDICATE PRINT CHARACTER IN IALI

PRINT THE CHARACTER

RECALL CURSOR POS I T [ON

TEST FOR PRINTER ERROR

EX I T I F ERROR DETECTED

ADVANCE TO NEXT COLUMN

SEE IF AT END OF LINE

IF NOT LOOP FOR NEXT COLUMN

BACK TO COLUMN 0

(AH) =0

SAVE NEW CURSOR POS I T I ON

LINE FEED CARR I AGE RETURN

RECALL CURSOR POSITION

ADVANCE TO NEXT LINE

F[NISHED?

[F NOT LOOP FOR NEXT LINE

GET CURSOR POSITION

INDICATE REQUEST CURSOR SET

CURSOR POsl T I ON RESTORED

BLOCK INTERRUPTS TILL STACK CLEARED

MOVE OK RESULTS FLAG TO STATUS BYTE

EXIT PRINTER ROUTINE

ERROR EXIT

GET CURSOR POSITION

IND[CATE REQUEST CURSOR SET

CURSOR POS I T I ON RESTORED

BLOCK INTERRUPTS T[LL STACK CLEARED

SET ERROR FLAG

EXIT ROUTINE

RESTORE ALL THE REGISTERS USED

RETURN WITH I NIT I AL I NTERRUPT MASK

5-180 BIOS2

IBM Personal Computer MACRO Assembler Vers,on 2.00

81052 - - - 06/10/85 8105 INTERRUPT ROUTINES

1-6

06- [0-85

499

500

50 I

502 0275

503

504 0275 33 02

505 0277 88 0000

506 027A CO 17

507 027C 88 OOOA

508 027F CD 17

509 0281 C3

510 0282

5"

512

5"

514

5"

516

5"

51.

5 "

520

521

522

523

524

525

526

527

52.

529

530 0282

531 0282 FB

532 0283 IE

533 0284 50

534 0285 52

535 0286 E8 0000 E

536 0289 FF 06 006C R

537 0280 75 04

538 028F FF 06 006E R

539 0293

540 0293 83 3E 006E R 18

541 0298 75 15

542 029A 81 3E 006C R 0080

543 02AO 75 00

544

545

546

547 02A2 2B CO

548 02A4 A3 006E R

549 02A7 A3 006C R

550 02AA C6 06 0070 R 0 I

551

552

553

554 02AF

555 02AF FE OE 0040 R

556 0283 75 08

557 0295 80 26 003F R FO

558 029A 80 OC

559 029C 9A 03F2

560 029F EE

561

562 02CO

563 02CO CD I C

564

565 02C2 5A

566 02C3 80 20

567 02C5 FA

568 02C6 E6 20

569 02C8 58

570 02C9 IF

571 02CA CF

572

573 02CB

574

575 02CB

576

CRLF

CRLF

CARR [AGE RETURN, L [NE FEED SU9ROUT I NE

PROC NEAR

XOR

"OV

INT

"OV

INT

RET

ENDP

OX,OX

AX,CR

17H

AX,LF

17H

SEND CR,LF TO FIRST PRINTER

ASSUME FIRST PRINTER (OX: OJ

GET THE PR I NT CHARACTER COMMAND AND

THE CARR I AGE RETURN CHARACTER

NOW GET THE LINE FEED AND

SEND IT TO THE BIOS PRINTER ROUTINE

: - - HAROWARE INT OB H -( IRQ LEVEL 0 ) - - - - - - - ­

THIS ROUTINE HANDLES THE TIMER INTERRUPT FROM FROM CHANNEL 0 OF

THE 8254 TIMER. [NPUT FREQUENCY IS 1.[9315 MHZ AND THE DIVISOR

IS 65536, RESULTING IN APPROXIMATELY 18.2 INTERRUPTS EYERY SECONO.

THE [NTERRUPT HANDLER MAINTAINS A COUNT (40:6C) OF INTERRUPTS SINCE

POWER ON TIME, WHICH MAY 9E USED TO ESTA8L1SH TIME OF DAY.

THE I NTERRUPT HANDLER ALSO DECREMENTS THE MOTOR CONTROL COUNT (40: 40 I

OF THE 0 I SKETTE, AND WHEN [T EXP I RES, WILL TURN OFF THE

DISKETTE MOTOR (s), AND RESET THE MOTOR RUNN I NG FLAGS.

THE INTERRUPT HANDLER WILL ALSO INYOI(E A USER ROUTINE THROUGH

INTERRUPT ICH AT EVERY T[ME TICK. THE USER MUST CODE A

ROUTINE AND PLACE THE CORRECT ADDRESS IN THE VECTOR TABLE.

TIMER [NT 1

S1'I

PUSH

PUSH

PUSH

CALL

INC

JNl

INC

T4:

C"P

JNZ

C"P

JNZ

PROC

OS

AX

OX

DDS

II)TI MER LOW

T4 ­

(tTl MER_HIGH

4'TIMER HIGH,OIBH

T5

'ltTIMER LOW,OSOH

T5 -

-

FAR

T I MER HAS GONE 24 HOURS

SUS

"DV

"DV

"OV

AX,AX

CO'TIMER _H I GH, AX

'<tTIMER _LOW, AX

TEST FOR 01 SI(ETTE T I ME OUT

T5:

DEC

JNZ

AND

"OV

"OV

OUT

T6

(tMOTOR STATUS,OFOH

AL,OCH

DX,03F2H

DX,AL

T6:

INT

PDP

"DV

CLI

OUT

PDP

PDP

IRET

OX

AL,EO[

INTAOO ,AL

AX

OS

ENDP

CODE ENDS

END

INTERRUPT S BACK ON

SAVE MACHINE STATE

ESTABLISH ADDRESSABILITY

INCREMENT T I ME

GO TO TEST DAY

INCREMENT HIGH WORD OF T [ME

TEST DAY

TEST FOR COUNT EQUALING 24 HOURS

GO TO D I SKETTE_CTL

GO TO 0 [SKETTE_CTL

DECREMENT DISKETTE MOTOR CONTROL

RETURN I F COUNT NOT OUT

TURN OFF MOTOR RUNNING BITS

FDC CTL PORT

TURN OFF THE MOTOR

T [MER T [CK [NTERRUPT

TRANSFER CONTROL TO A USER ROUT I NE

RESTORE (OX)

GET END OF I NTERRUPT MASK

D I SABLE [NTERRUPTS TILL STACK CLEARED

END OF INTERRUPT TO 8259

RESET MACHINE STATE

RETURN FROM [NTERRUPT

BIOS2 5-181

IBM Personal Compvt.er MACRO Asse",bler

ORGS - - - - - 06/10/85 COMPATIBILITY MODULE

Version 2.00

I

2

3

4(.

5

6

7

8

9

10

II

12

13

14

15

16

79

80

81

82

83

84

85

86

81

88

73

74

75

76

77

78

89

90

91

92

93

94

95

96

91

98

99

100

101

102

103

104

105

106

101

108

109

63

64

65

66

67

68

69

70

71

72

51

52

53

54

55

56

57

45

46

47

48

49

50

58

59

60

61

62

37

38

39

40

41

42

43

44

28

29

30

31

32

33

34

35

36

17

18

19

20

21

22

23

24

25

26

27

0000

I - I

06-10-65

PAGE 116,121

TITLE ORGS - - - - ­

.LIST

CODE SEGMENT

06/10/85

BYTE PUBL I C

COMPATIBILITY MODULE

AI

CDNF TBL

CRT CHAR GEN

01 -

EI09

EI61

EI62

E163

EI64

E201

E202

E203

E301

E302

E303

E304

E401

E50 I

E60 I

E602

F 1780

FIHII

FI782

F 1790

FI791

02

02.

DISK BASE

DUMMY RETURN

EIOI ­

EI02

EI03

EI04

EI05

EI06

EI07

EI06

F3'

F3D

F3DI

FD TBL

FLOPPY

HRD

KIO

KII

KI2

K 13

K 14

KI5

K6

K6L

Kl

K8

K9

"4

"5 .,

NMI INT

PR I NT SCREEN

P 0 R­

SEEKS I

SLAVE-VECTOR TABLE

TUTDR-

VECTOR TABLE

V IDEO _PARMS

PUBL I C pueL I C

PUBL I C

PUBLIC

PUBL I C

PUBL I C

PUBLIC

PUBLIC

PUBLIC

PUBLIC

PUBL I C

PUBL I C

PUBLIC

PUBLIC

PUBLIC

PUBLIC

PUBL IC

PUBLIC

PUBLIC

PUBLIC

PUBLIC

PUBL IC

PUBL I C

PUBLIC

PUBLIC

PUBL IC

FUBLI C

PUBL IC

PUBL1 C

PUBLI C

PUBLIC

PUBLIC

PUBLIC

PUBLIC

PUBL I C

PUBL I C

PUBLIC

PUBL I C

PUBL I C

PUBL IC

PUBL IC

PUBL IC

PUBL IC

PUBL IC

PUBLIC

PUBLIC

PUBL IC

PUBLIC

PUBLIC

PUBLIC

PUBLIC

PUBLIC

PUBLIC

PUBL IC

PUBL IC

PUBL IC

PUBL IC

PUBL I C

PUBL IC

PUBL IC

PUBL IC

PUBL IC

PUBL I C

PUBL I C

PUBL I C

PUBL I C

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

BOOT STRAP I I NEAR

CASSETTE 10 'INEAR

OIl ;NEAR-

DISK INT 1 ;NEAR

01 SK-SETUP: NEAR

DISKETTE 10 1 :NEAR

DSKETTE SETUP: NEAR

EQUIPMENT 1 :NEAR

INT 287:NEAR

KI6"jNEAR

KEYBOARD I 0 I: NEAR

K8 I NT 1:NEAR

MEMORY-S I ZE OET I: NEAR

NMI INT 1 :NEAR ­

PR I NT SCREEN I: NEAR

PRINTER 10 I:NEAR

RE DIRECTfNEAR

RS232 10 1 :NEAR

RTC INT:NEAR

SEEK :NEAR

START 1 :NEAR

T I ME OF DAY liNEAR

TIMER INT l;NEAR

V IDEO=IO_TINEAR

ASSUME CS:CODE.DSIDATA

THIS MODULE HAS BEEN ADDED TO FACILITATE THE EXPANSION OF THIS PROGRAM.

IT ALLOWS FOR THE FIXED ORG STATEMENT ENTRY POINTS THAT HAVE TO REMAIN

AT THE SAME ADDRESSES. THE USE OF ENTRY POINTS AND TABLES WITHIN THIS

MODULE SHOULD BE AVOIDED AND ARE INCLUDED ONLY TO SUPPORT EXISTING CODE

THAT VIOLATE THE STRUCTURE AND DESIGN OF BIOS. ALL BIOS ACCESS SHOULD

USE THE DOCUMENTED I NTERRUPT VECTOR I NTERFACE FOR COMPA TI BILl TY.

5-182 ORGS

IBM Person. I Computer MACRO Assembler

ORGS - - - - 06/10/85 COMPATIBILITY MODULE

Ver510n 2.00 1-2

06-10-85

110

111

112

113

114

115 0000

11.

111 0000 36 34 3/3 30 30 39

118

1 19

120

121

122

123

124

30 20 43 4F 50 52

2E 20 49 42 4D 20

31 39 38 31 2C 20

31 39 3/3 35 20 20

20 20

125

12.

127

128 0020 50 41 52 49 54 59

PAGE

;-------------------------------­

; COPYR I GHT NOT I CE

1-------------------------- - - ---­

; 1ORG OEOOOH

;

;---------------------------------------­

PAR I TY ERROR MESSAGES

;---------------------------------------­

D1

ORG

OB

OOOOOH

'6460090 COPR" IBM 1961, 1965

DB 'PARITY CHECK t' ,CR,LF I PLANAR BOARO PARITY CHECK LATCH SET

129

132

20 43 48 45 43 4B

130 20 31 OD 0'

131 0030 50 41 52 49 54 59

20 43 48 45 43 4B

133 20 32 OD 0'

134 0040 3F 3F 3F 3F 3F OD

135

.

0047

0'

13.

137

138 0058

139 0058

140 0058 E9 0000 E

141

142

D2

D2'

1P

;;-

RESET:

DB

DB

DRG

DRG

J"P

'PARITY CHECK 2' ,CR,LF

'?????' ,CR,LF

S

OE05BH

0005BH

START_'

I/O CHANNEL CHECK LATCH SET

RESET START

VECTOR ON TO THE MOVED POST CODE

143

144

145

146 OOSE 20 31 30 31 20 53

141 19 13 14 65 60 20

146

149

42 6F 6' 12

45 72 72 6F

64 20

12 00

150 OA

151 0077 20 31 30 32 20 53

152

153

19 73 74 65 60 20

42 6F 61 12 64 20

154

155

45 12 12 6F 72 00

OA

156 0090 20 31 30 33 20 53

151 19 13 14656020

155 42 6F 61 126420

159

160

45 72 72 6F 72 00

OA

;

;-------------------------------­

EIOI

EI02

EI03

161 OOA9 20 31 30 34 20 53

162 19 13 14656020

163

164

42 6F 61 12 64 20

45 12 12 6F 72 00

EI04

165 OA

166 aae2 20 31 30352053 EI05

161 19 13 14656020

168

169

170

42 6F 61 726420

45 72 72 6F 72 00

OA

171 OOoB 20 31 30 36 20 53

172 79 73 74 65 60 20

173

174

175

42 6F 61 726420

45 72 72 6F 72 00

OA

176 00F4 20 31 30 37 20 53

177 79 73 74656020

176 42 6F 61 726420

179

160

161

162

163

164

45 72 72 6F 72 00

OA

0 I 00 20 31 30 36 20 53

79 73 74 65 60 20

42 6F 61 72 64 20

45 72 72 6F 72 00

EI06

EI07

EI06

POST ERROR MESSAGES i-------------------------------­

DB

DB

DB

DB

DB

DB

DB

DB

101-SYlitem Board Error',CR,LF

102-System Board Error',CR,LF

103-SYlitem Board Error',CR,LF

104-SYlitem Board Error' oCR ,LF l05-System Board Error',CR,LF

106-System Board Error' ,CR,LF

107-System Board Error',CR,LF

106-System Board Error',CR,LF

INTERRUPT FAILURE

TIMER FAILURE

TIMER I NTERRUPT FA I LURE

PROTECTEO MOOE FA I LURE

LAST 6042 COMMANO NOT ACCEPTED

CONVERTI NG LOG I C TEST

HOT NM I TEST

TIMER BUS TEST

165 OA

166 0 I 26 20 31 30 39 20 53

79 73 74 65 60 20 167 lee

169

42 6F 61 72 64 20

45 72 72 6F 72 00

190

191

192

193

194

195

196

OA

013F 20 31 3631 2053

79 73 74 65 60 20

4F 70 74 69 6F 6E

73 20 4E 6F 74 20

53 65 74 20 26 52

75 6E 20 53 45 54

197 55 50 29 00 OA

196 0166 20 31 36 32 20 53

199 79 73 74 65 60 20

200

20 I

202

203

4F 70 74 69 6F 6E

73 20 4E 6F 74 20

53 65 74 20 26 52

75 6E 20 53 45 54

204 55 50 29 00 OA

205 0191 20 31 36 33 20 54

206

207

206

209

69 60 65 20 26 20

44 61 74 65 20 4E

6F 74 20 53 65 74

20 26 52 75 6E 20

210

211

53 45 54 55 50 29

00 OA

212 0lB7 20 31 36 34 20 40

213

214

215

216

217

65 60 6F 72 79 20

53 69 7 A 65 20 45

72 72 6F 72 20 26

52 75 6E 20 53 45

5455502900 OA

216 OIOB 20 32 30 31 20 40

219 65 60 6F 72 79 20

220 45 72 72 6F 72 00

221 OA

222 OIEE 20 32 30 32 20 40

223 65 60 6F 72 79 20

EI09

EI61

EI62

EI63

E164

E201

E202

DB

DB

DB

DB

DB

DB

DB

109-SYlitem Board Error',CR,LF

161-System Opt Ions No'

Set- (Run SETUP)' ,CR,LF OEAO BATTERY

, 162-SYlitem OptIons Not Set-tRun SETUP) ',CR,LF ;CHECKSUM/CONFIG

, 163-T'me & Date Not Set-(Run SETUP) ',CR,LF ;CLOCK NOT UPOATING

, 164-Memory Size Error-tRun SETUP} ",CR,LF

201-Memory Error',CR,LF

, 202-Memory Addrelill Error' ,CR,LF

LOW MEG CHIP SELECT TEST

CMOS DOES NOT MATCH

I LINE ERROR 00->15

ORGS 5-183

IBM Personal Compute .... MACRO Assemble....

DRGS - - - - 06/10/85 COMPATIBILITY MODULE

Ve .... sion 2.00

224

225

41 64 64 12 65 13

73 20 45 12 12 6F

226 72 00 OA

221 0209 20 32 30 33 20 40

228

229

230

231

65 60 6F 12 19 20

-41 64 64 12 65 13

13 20 45 12 12 6F

12 00 OA

232 0224 20 33 30 31 20 4B

233

234

235

65 19 62 6F 6! 12

64 20 45 72 72 6F

236

237

238

239

240

241

0239

72 00 OA

20 33 30 32 20 53

79 73 14 65 60 20

55 6E 69 74 20 4B

65 79 6C 6F 63 6B

20 69 73 20 4C 6F

63 68 65 64 00 OA

242 0250 20 28 52 45 53 55

243 40 45 20 3D 20 22

244

245

246

247

46 31 22 20 48 45

59 29 00 OA

248

249

250

0213

251 02C3

252 = 02C3

253 02C3 E9 0000 E

254

255 02C6 20 33 30 33 20 48

256

257

258

259

65 7962 6F 61 72

64 20 4F 12 20 53

19 13 74 65 60 20

55 6E 69 14 20 45

12 72 6F 72 00 OA 260

261

262 02EA 20 33 30 34 20 48

263 65 79 62 6F 61 12

264 64 20 4F 12 20 53

265

266

267

79 13 14 65 60 20

55 6E 69 74 20 45

72 72 6F 12 00 OA

268 030E 20 34 30 31 20 43

269 52 54 20 45 72 72

210 6F 72 00 OA

271 031E 20 35 30 31 2043

212 52 54 20 45 72 72

213 6F 72 00 OA

274 032E 20 36 30 31 20 44

215

216

277

278

69 73 6B 65 74 74

65 20 -45 72 72 6F

12 00 OA

279 0343 20 36 30 32 20 44

280 69 73 6B 65 74 14

281

282

65 20 -42 6F 6F 74

20 52 65 63 6F 72

283

284

285

6-4 20 45 72 72 6F

72 00 OA

286 0364 31 37 38 30 20 44

287 69 73 68 20 30 20

288 46 61 69 bC 75 72

289 65 00 OA

290 0379 31 37 38 31 20 44

291 69 73 68 20 31 20

292

293

46 61 69 6C 75 72

65 00 OA

294 038E 31 37 38 32 20 44

295 69 73 68 20 43 6F

296

297

6E 74 72 6F 6C 6C

65 12 20 46 61 69

298 6C 75 12 65 00 OA

299 03AC 31 31 39 30 20 44

300 69 73 68 20 30 20

301 45 72 12 6F 72 00

302 OA

303 03BF 31 31 39 31 20 44

304

305

306

69 13 68 20 31 20

45 12 72 6F 72 00

OA

307

308 0302 52 4F 4D 20 20 45

309

310

72 72 6F 72 20 00

311

312

OA

03QF 20 20 20 20 20 55

6E 6C 6F 63 68 20

313

314

315

316

53 19 73 74 65 60

20 55 6E 69 1-4 20

48 65 79 6C 6F 63

68 20 00 OA

E203

E301

E302

F3D

IP

1;ORG

ORO

NMI INT EQU

J"P

E303 DB

E401

E50 I

E60 I

FI781

FITS2

FI190

FI191

F3A

F301

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

• 203-M.mo .... y Add .... ess Error',CR,LF lOI-Keyboa .... d Er .... o .... • ,CR,LF

, 302-System UnIt Keyloek IS Locked·.CR.LF

• (RESUME

NM I ENTRY

S

OE2C3H

002C3H

S

NM!_INT 1 : VECTOR ON TO MOVEO NM I CODE

, 303-Keyboard Or System Unit E ........ o .... ·.CR.LF

601-Dl5kette El"l"or',CR,LF

I LINE ERROR 16->23

I KEY80ARD ERROR

KEYBOARD LOCK ON

KEYBOARD/SYSTEM ERROR

DB • 30-4-Keyboa .... d 0 .... System Unl t E r r o r ' ,CR,LF KEYBOARO CLOCK HIGH

40 I-CRT Er .... o .... • .CR .LF

50l-CRT Error'.CR,LF

DISKETTE 800T RECORD I S NOT VALl D

DB • b02-Diskette Boot Record Error'.CR,LF

HARD FILE ERROR MESSAGE

'1180-0isk

'1781-0j sk 1 Fa,lure·.CR.LF

'1182-01sk Controller Fa,lure'.CR,LF

'1790-0,51. 0 Error',CR.LF

'1191-0i 51. 1 Error' ,CR,LF

'ROM Error

-FlKEY)' ,CR,LF a

Fa,lure'.CR,LF

,CR,LF

-Un loek System Un i

,

Key loek ' ,CR.LF

MONOCHROME

COLOR

DISKETTE ERROR

RD. CHECKSUM

5-184 ORGS

IBM Personal ComputeI'" MACRO Ass ...

bl.1'"

ORGS - - - 06/10/85 COMPATIBILITY MODULE

VersIon 2.00

321

32.

329

330

331

332

333

33.

335

336

331

33.

339

3.0

3.,

3.2

311

31.

319

320

321

322

323

32'

325

326

3'3

3 ••

3.5

3.6 0401

341

3 ' .

3.9

350 0401 0132

351 0403 04

352 0404 0000

353 0406 0080

35' 0408 00

355 0409 00

356 040A 00 00 00

351 0400 0131

35. 040F II

359 0410 00

360

361

362

363 0411 0261

36' 0413 04

365 0414 0000

366 0416 012C

361 0418 00

36. 0419 00

369 041A 00 00 00

310 0410 0267

311 04JF II

312 0420 00

313

31.

315

316 0421 0267

311 0423 06

31. 0424 0000

319 0426 o

12C

3.0 0428 00

3.' 0429 00

3.2 042A 00 00

3.3 0420 0267

3 . ' 042F II

3.5 0430 00

3.6

3 . '

300

3.9 0431 03AC

390 0433 08

391 0434 0000

392 0436 0200

393 0438 00

39. 0439 00

395 043A 00 00 00

396 0430 03AC

391 043F II

39. 0440 00

399

400

'01

402 0441 03AC

403 0443 06

40' 0444 0000

'05 0446 0200

.06 0448 00

401 0449 00

. 0 . 044A 00 00 00

409 0440 03AC

410 044F II

411 0450 00

412

413

41.

415 0451 0267 .,.

0453

O.

0454 0000

0456 FFFF

. , 9 0458 00

'20 0459 00

421 045A 00 00 00

.22 0450 0267

.23 045F II

' 2 ' 0460 00

425

426

'21

' 2 . 04pl DICE

' 2 '

0463 08

'30 0464 0000

FD_TBL:

; - - - - DRIVE TYPE 01

1-----

OW

08

OW

OW

08

08

08

OW

08

08

09400

0.0

0

05120

0

0

0,0,0

09400

110

0

,-----

DRIVE TYPE 05

OW

08

OW

OW

08

08

08

OW

08

08

09400

060

0

05120

0

0

0,0,0

09400

110

0

DRIVE TYPE 06 ow

08

OW

OW

08

08

08

OW

08

08

06150

040

0

OFFFfH

0

0

0,0,0

06150

110

0

DRIVE TYPE 07

OW

08

OW

04620

0.0

0

OW

08 ow ow

08

08

08

OW

08

08

03060

0'0

0

01280

0

0

0,0,0

03050

110

0

OR I VE TYPE 02

OW

08

OW

OW

DB

08

08

OW

08

DB

06150

0'0

0

03000

0

0

0,0,0

06150

110

0

OR 1 VE TYPE 03

OW

08

OW

OW

08

08

08

OW

08

08

06150

060

0

03000

0

0

0,0,0

06150

110

0

DRIVE TYPE 04

1-'

06-10-85

I

;

PAGE

; --;---- - -

-

- - - - - - - - - - - - - - - - - - - - - -

----------

; INITIALIZE DRIVE CHARACTERISTICS

-

-----------­

;

; FIXED DISK PARAMETER TABLE

THE TABLE I S COMPOSED OF A BLOCK DEFINED AS:

+0

+2

+3

+5

+9

+12

+ 14

+ 1 5

II WORD) MAXIMUM NUMBER OF CYLINDERS

11 BYTE) MAXIMUM NUMBER OF HEADS

{I WOROI NOt USED/SEE PC-XT

(I WORD) STARTING WRITE PRECOMPENSATION CYL

II BYTE) NOT USED/SEE PC-XT

(I BYTE) CONTROL BYTE

BIT 1 DISABLE RETRIES -OR­

BIT

BIT

6 DISABLE RETRIES

3 MORE THAN 8 HEADS

13 BYTES)- NOT USED/SEE PC-XT

(I WORD) LANDING ZONE

(1 BYTE) NUMBER OF SECTORS/TRACK

{I BYTE I RESERVED FOR FUTURE USE

TO DYNAMICALLY DEFINE A SET OF PARAMETERS

BU I LD A TABLE FOR UP TO 15 TYPES AND PLACE

THE CORRESPOND I NG VECTOR INTO 1NTERRUPT 4 1

FOR DRIVE 0 AND rNTE~RUPT 46 FOR DRIVE I.

CYLINDERS

HEADS

WRITE PRE-COMPENSATION CYLINDER

; CONTROL BYTE

LAND I NG ZONE

SECTORS/TRACK

; CYLINDERS

; HEADS

WRITE PRE-COMPENSATION CYLINDER

CONTROL BYTE

LAND I NG ZONE

SECTORS/TRACK

CYL I NDERS

HEADS

WRITE PRE-COMPENSATION CYLII'I)ER

CONTROL BYTE

LANDING ZONE

SECTORS I TRACK

I CYLINDERS

I HEADS

, WRITE PRE-COMPENSATION CYLINDER

CONTROL BYTE

LAND I NG ZONE

SECTORS/TRACK

CYLINDERS

HEADS

WRITE PRE-COMPENSATION CYLINDER

CONTROL BYTE

LAND I NG ZONE

SECTORS /TRACK

CYL J NOERS

HEADS

NO WRITE PRE-COMPENSATION

CONTROL BYTE

LAND J NG ZONE

SECTORS /TRACK

CYLINDER~

HEADS

ORGS 5-185

IBM Per ... onal COIllPUt.er MACRO A ...... elllbler

ORGS - 06/10/85 COMPATI81LITY MODULE

Ver ... ,on 2.00

481

482

483

484

485

486

487

488

489

490

491

492

493

494

495

496

497

498

499

500

501

502

503

504

505

506

507

508

509

510

511

512

513

514

515

516

517

518

519

469

470

471

472

473

474

475

476

477

478

479

480

456

457

458

459

460

461

462

463

464

465

466

467

468

448

449

450

451

452

453

454

455

440

441

442

443

444

445

446

447

432

433

434

435

436

437

438

439

520

521

522

523

524

525

526

521

528

529

530

531

532

533

534

535

536

537

538

539

540

541

542

543

544

0466 0100

0468 00

0469 00

046A 00 00 00

0460 o

IFF

046F 11

0410 00

0411 0200

0413 05

0414 0000

0416 FFFF

0418 00

0479 00

047A 00 00 00

0410 0200

047F 11

0480 00

0481 0384

0483 OF

0484 0000

0486 FFFF

0488 00

0489 08

048A 00 00 00

0480 0385

048F 11

0490 00

0491 0334

0493 03

0494 0000

0496 FFFF

0498 00

0499 00

049A 00 00 00

0490 0334

049F 11

04AO 00

04Al 0357

04A3 05

04A4 0000

04A6 FFFF

04A8 00

04A9 00

04AA 00 00 00

04AO 0357

04AF 11

04BO 00

0481 0351

0483 07

0484 0000

0486 FFFF

0488 00

0489 00

048A 00 00 00

0480 0351

048F 11

04CO 00

04CI 0132

04C3 08

04C4 0000

04C6 0080

04C8 00

04C9 00

04CA 00 00

04CD o 13F

04CF 11

0400 DO

00

0401 0200

0403 01

0404 0000

0406 FFFF

0408 00

0409 00

04DA 00 00 00

0400 0200

040F I I

04EO 00

04El 0000

04E3 00

04E4 0000

04E6 0000

04E8 00

04E9 00

04EA 00 00 00

04EO 0000

04EF 00

04FO 00

DRIVE TYPE 11

OW

DB

OW

OW

DB

DB

DB

OW

DB

DB

08550

050

0

OFFFFH

0

0

0,0,0

08550

170

0

OW

DB

OW

OW

DB

DB

DB

OW

DB

DB

DRIVE TYPE 12

08550

070

0

OFFFFH

0

0

0,0,0

08550

170

0

DRIVE TYPE 13

OW

DB

OW

OW

DB

DB

DB

OW

DB

DB

OW

DB

OW

OW

DB

DB

DB

OW

DB

DB

03060

080

0

01280

0

0

0,0,0

03190

170

0

DRIVE TYPE 14

07330

070

0

OFFFFH

0

0

0,0,0

07330

170

0

DR I VE TYPE 15

OW

DB

OW

OW

DB

DB

DB

OW

DB

DB

00000

ODD

0

00000

0

0

0,0,0

00000

ODD

0

DR I VE TYPE 16

OW

DB

DB

DB

OW

DB

DB

02560

0

0

0,0,0

05110

170

0

DR I VE TYPE 08

OW

DB

OW

OW

DB

DB

DB

OW

DB

DB

01330

050

0

OFFFFH

0

0

0,0,0

07330

170

0

OR IVE TYPE 09

OW

DB

OW

OW

DB

DB

DB

OW

DB

DB

09000

150

0

OFFFFH

0

008H

0,0,0

09010

170

0

DR I VE TYPE 10

OW

DB

OW

OW

DB

DB

DB

OW

DB

DB

08200

030

0

OFFFFH

0

0

0,0,0

08200

170

0

RESERVED

'-5

06-10-85

WR I TE PRE-COMPENSAT I ON CYL I NDER

LAND' NG ZONE

SECTORS/TRACK

CYL I NDERS

HEADS

NO WR I TE PRE -COMPENSA T I ON

CONTROL 8YTE

LANDING ZONE

SECTORS / TRACK

CYL I NDERS

HEADS

NO WRITE PRE-COMPENSATION

CONTROL BYTE

LAND I NG ZONE

SECTORS/TRACK

CYLINDERS

HEADS

NO WRITE PRE-COMPENSATION

CONTROL 8YTE

LANDING ZONE

SECTORS / TRACK

CYL INOERS

HEADS

NO WRITE PRE-COMPENSATION

CONTROL BYTE

LAND I NG ZONE

SECTORS / TRACK

CYL I NOERS

HEADS

NO WRITE PRE-COMPENSATION

CONTROL 8YTE

LAND I NG ZONE

SECTORS/TRACK

CYLINDERS

HEADS

WRITE PRE-COMPENSATION CYLINDER

CONTROL BYTE

LAND I NG ZONE

SECTORS/TRACK

CYL I NDERS

HEADS

NO WRITE PRE-COMPENSATION

CONTROL 8YTE

LAND I NG ZONE

SECTORS / TRACK

•••• DO NOT USE····

CYL' NOERS

HEADS

WRITE PRE-COMPENSATION CYLINDER

CONTROL 8YTE

LAND I NG ZONE

SECTOR S / TRACK

5-186 ORGS

545 04FI 0264

546 04F3 04

547 04F4 0000

548 04F6 0000

549 04F8 00

550 04F9 00

551 04FA 00 00 00

552 04FO 0291

553

554

04FF

555

556

557

558 050 I

559 0503 05

560 0504 0000

561 0506 012C

562 0508 00

563 0509 00

564 050A 00 00

565 0500 030 I

566 050F

567 0510

"

568

569

570

571 0511 030 I

572 0513 07

573 0514 0000

574 0516 FFFF

575 0518 00

576 0519 00

577 051A 00 00 00

05100301 578

579

580

051F

0520

"

581

582

583

584 0521 0400

585 0523 01

586 0524 0000

587 0526 0200

588 0528 00

589 0529 00

590 052A. 00 00 00

591

592

593

0520 03FF

052F II

0530 00

594

595

596

597 0531 0200

598 0533 05

599 0534 0000

600 0536 a 12C

601 0538 00

602 0539 00

603 053A 00 00

604 0530 02DC

605

606

053F

0540

"

607

608

609

610 0541

6 " 0543 07

612 0544 0000

613 0546 012C

614 0548 00

615 0549 00

616 054A 00 00 00

617 0540 020C

618 054F

619

620

621

622

623 0551 0200

624 0553 05

625 0554 0000

626 0556 012C

627 0558 00

628 0559 00

629

630

OSSA 00 00 00

0550 0200

6 "

632

633

634

055F

0560

"

635

636 0561 0132

637 0563 04

638 0564 0000

639 0566 0000

640 0568 00

641 0569 00

642

643

644

645

646

647

056A 00 00 00

0560 0150

056F

0570

"

648

649 0511 0000

650 0513 00

65\ 0514 0000

652 0576 0000

653 0578 00

654 0579 00

655

656

657

658

057A 00 00 00

0570 0000

057F 00

0580 00

IBM Personal Computer MACRO Assembler

ORGS - - - - 06/10/85 COMPATIBILITY MODULE

VersIon 2.00 1-6

06-10-85

DRIVE TYPE 21 ow

08 ow ow

08

08

DB ow

DB

08

01330

070

0

03000

0

0

0.0.0

07320

170

0

;

----­

DR] VE TYPE 22 ow

08 ow ow

08

08

08 ow

08

08

01330

050

0

03000

0

0

0 , 0.0

07330

170

0

;

---­

DR I VE TYPE 23

OW

08 ow ow

08

08

08

OW

08

08

03060

040

0

00000

0

0

0.0.0

03360

170

0

DRIVE TYPE 24

OW

08

Ow

OW

08

08

08

OW

08

08

00000

000

0

00000

0

0

0.0.0

00000

000

0

OW

08 ow ow

08

08

08 ow

08

08

06120

040

0

00000

0

0

O. a

I a

06630

170

0

DR! VE TYPE 17 ow

08 ow ow

08

08

08 ow

08

08

09770

050

0

03000

0

0

0,0,0

09770

170

0

OR I VE TYPE 18 ow

08 ow ow

08

08

08 ow

08

DB

09770

070

0

OFFFFH

0

0

0,0.0

09770

170

0

ORlVE TYPE 19 ow

08 ow ow

08

08

08 ow

08

08

10240

070

0

05120

0

0

0.0.0

10230

170

0

DR I VE TYPE 20

Ow

08 ow ow

08

DB

08 ow

08

08

07330

050

0

03000

0

0

0.0.0

07320

170

0

--­ RESERVED--­

CYL I NOERS

HEADS

WRITE PRE-COMPENSATION ALL CYLINDER

CONTROL BYTE

LAND I NG ZONE

SECTORS /TRACK

CYL] NDERS

HEADS

WR I TE PRE-COMPENSAT I ON CYL

CONTROL BYTE

LAND J NG ZONE

SECTORS I TRACK

CYL J NDERS

HEADS

NO WRITE PRE-COMPENSATION

CONTROL BYTE

LAND I NG ZONE

SECTORS/TRACK

CYL I NOERS

HEADS

WR 1TE PRE-COMPENSAT I ON CYLI NOER

I CONTROL BYTE

LAND I NG ZONE

SECTORS/TRACK

CYL [NDERS

HEADS

WRITE PRE-COMPENSATION CYL

CONTROL BYTE

LAND [NG ZONE

SECTORS /TRACK

CYLINDERS

HEADS

WRITE PRE-COMPENSATION CYL

CONTROL BYTE

LAND I NG ZONE

SECTORS / TRACK

CYLINDERS

HEADS

WRITE PRE-COMPENSATION CYL

I CONTROL BYTE

LANDING ZONE

SECTORS/TRACK

CYL! NDERS

HEADS

WRITE PRE-COMPENSATION ALL CYL

CONTROL BYTE

LAND [NG ZONE

SECTORS/TRACK

CYLINDERS

HEADS

WRITE PRE-COMPENSATION CYL

CONTROL BYTE

LANOINCi ZONE

SECTORS / TRACK

ORGS 5-187

ISh4 p.,..on.1 COlllput.r h4ACRO Ass.",bl.,.

ORGS ----- 06/10/85 COh4PATIBILITY h400ULE

V.,..'on 2.00

65'

660

661

662 05S1 0000

663 0563 00

•••

0584 0000

6.5 05B6 0000

666 05SB 00

667 0569 00

666 058A ob

00 00

66. 0580 0000

670 058F 00

671 0590 00

672

673

67.

675 0591 0000

676 OS93 00

677 0594 0000

676 0596 0000

67' OS9S 00

660 OS99 00

66' OS9A 00 00

.62 0590 0000

.63 OS9F 00

664 05AO 00

66S

00

6.6

6.7

6 •• 05AI 0000

6 •• OSA3 00

6.0 05H 0000

6.,

05A6 0000

6'2 05AS 00

6.3 05A9 00

05AA 00 00 00 6 . '

" 5

•••

05AD 0000

OSAF 00

6.7 05BO 00

6 ' .

6"

700

701 0581 0000

702 0583 00

703 0584 0000

70' osa6

0000

705 05SS 00

706 OS89 00

707 OSSA 00 00 00

70. 05S0 0000

70. 05SF 00

710 OSCO 00

711

712

713

" 4

" 5 ".

05CI 0000

OSC3 00

05C4 0000

" 7 ". 05C6 0000

OSCS 00

".

OSC9 00

720 05CA 00 00 00

721 osce

0000

722 05CF 00

723 0500 00

72'

725

726

727 0501 OOO~

72. 0503 00

72. 0504 0000

730 0506 0000

731 0508 00

732 0509 00

733 OSDA 00 00 00

734 0500 0000

73'

050F 00

736 OSEO 00

737

73.

73'

740 OSEI 0000

741 05£3 00

7'2 Q5E4 0000

143 OSE6 0000

H. OSES 00

145 OSE9 00

7'6 05EA 00 00 00

7.7 05EO 0000

7•• 05EF 00

7•• OSFO 00

750

751

752

153 05Fl 0000

154 OSF3 00

155 OSF4 0000

" 6

757

75. OSF9 00

75'

OSF6 0000

OSFS 00

05FA 00 00

160 05FO 0000

00

161 05FF 00

162 0600 00

,..

165

166 0601 0000

161 0603 00

16. 0604 0000

16' 0606 0000

770 060S 00

771 0609 00

172 060A 00 00 00

1-7

06-10-85

;

-----

DR I VE TYPE 25 ••• RESERVEO···

OW

DB

OW

OW

DB

DB

DB

OW

DB

DB

00000

000

0

00000

0

0

0.0.0

00000

000

0

ORIYE TYPE 26 ••• RESERVED···

CYLINDERS

HEADS

WR I TE PRE-COh4PENSAT ION CYL

,

CONTROL BYTE

LANDING ZONE

SECTORS/TRACK

OW

DB

OW

OW

DB

DB

DB

OW

DB

DB

00000

000

0

00000

0

0

0,0,0

00000

000

0

DRIVE TYPE 27

OW

DB

OW

OW

DB

DB

DB

OW

DB

DB

00000

000

0

00000

0

0

0,0,0

00000

000

0

DR I VE TYPE 28

••• RESERVED···

••• RESERVED···

CYLINDERS

HEADS

WRITE PRE-COh4PENS~TION CYL

CONTROL BYTE

LAND I NCi ZONE

SECTORS/TRACK

CYLINDERS

HEADS

WRITE PRE-COh4PENSATION CYL

I CONTROL. BYTE

LAND 1 NG ZONE

SECTORS / TRACK

OW

DB

OW

OW

DB

DB

DB

OW

DB

DB

00000

000

0

00000

0

0

0,0,0

00000

000

0

;-----

DR I VE TYPE 29 ••• RESERVED···

CYL I NDERS

HEAOS

I WRITE PRE-COh4PENSATION CYL.

I CONTROL BYTE

LAND I NG ZONE

SECTORS/TRACK

;-----

OW

DB

OW

OW

DB

DB

DB

OW

DB

DB

00000

000

0

00000

0

0

0, 0, a

00000

000

0

DR I VE TYPE 30 RESERVED···

CYL J NDERS

HEADS

WR I TE PRE-COh4PENSAT I ON CYL

CONTROL. BYTE

LAND J NG ZONE

SECTORS I TRACK

OW

DB

OW

OW

DB

DB

DB

OW

DB

DB

00000 goo

00000

0

0

0,0,0

00000

000

0

;

-----

DRIVE TYPE 31 • •• RESERVED···

CYLINDERS

HEADS

I WR I TE PRE-COh4PENSAT I ON CYL.

CONTROL BYTE

LAND I NG ZONE

SECTORS I TRACK

OW

DB

OW

OW

DB

DB

DB

OW

DB

DB

00000

000

0

00000

0

0

0,0,0

00000

000

0

;

-----

DR I VE TYPE 32 ••• R~SERVEO···

CYL I NDERS

HEAOS

WRITE PRE-COh4PENSATION CYL.

I CONTROL BYTE

LANDING ZONE

SECTORS/TRACK

OW

DB

OW

OW

DB

DB

DB

OW

DB

DB

00000

000

0

00000

0

0

0,0. a

00000

000

0

;

-----

DRIVE TYPE 33 ••• RESERVED···

OW

DB

OW

OW

DB

DB

DB

00000

000

0

00000

0

0

0,0,0

I CYL.I NOERS

; HEADS

,

CYLJ NDERS

HEADS

WR I TE PRE-COh4PENSAT I ON CYL

CONTROL BYTE

L.AND I NG ZONE

SECTORS/TRACK

WRITE PRE-COMPENSATION CYL

CONTROL BYTE

5-188 ORGS

IBM Personal Computer MACRO Assembler

ORGS - - - - ­ 06/10/85 COMPATIBILITY MODULE

V .. rs,on 2.00

773 0600 0000

774 060F 00

775 0610 00

776

777

776

779 061 I 0000

780 0613 DO

781 0614 0000

782 0616 0000

783 0618 00

764 0619 00

~ 061A 00 00

0610 0000

00

761 061 F 00

786 0620 00

189

790

791

792 0621 0000

793 0623 00

794 0624 0000

795 0626 0000

796 0628 00

797 0629 00

796 062A 00 00 00

799 0620 0000

600 062F 00

801 0630

602

803

804

805 0631 0000

606 0633 00

807 0634 0000

808 0636 0000

809 0638 00

810 0639 00

811 063A 00 00 00

812 0630 0000

813 063F 00

814 0640 00

815

816

817

618 0641 0000

819 0643 00

820 0644 0000

621 0646 0000

822 0648 00

823 0649 00

624 064A 00 00 00

625 064D 0000

826 064F 00

627 0650 00

626

629

~

0651 0000

632 0653 00

,.-.....

633 0654 0000

634 0656 0000

835 0658 00

836 0659 00

837 065A 00 00

636 0650 0000

639 065F 00

840 0660 00

841

842

643

844 0661 0000

845 0663 00

846 0664 0000

847 0666 0000

648 0668 00

849 0669 00

850 066A 00 00 00

851 0660 0000

852 066F 00

853 0610 00

854

855

656

857 0611 0000

858 0613 00

859 0614 0000

860 0616 0000

861 0618 00

662 0619 00

863 061A 00 00 00

664 0610 0000

665 061F 00

866 Ob80 00

667

668

669

670 0681 0000

871 0&83 00

872 0&84 0000

673 0686 0000

674 Ob88 00

875 Ob89 00

876 068A 00 00 00

877 Ob8D 0000

678 06aF 00

879 0690 00

680

661

662

883 0691 0000

884 0693 00

885 0694 0000

886 0696 0000

1-6

06-10-85

OW

08

08

00000

000

0

1----­

DRIVE TYPE 34 ••• RESERVED···

OW

08

OW

OW

08

08

08

OW

08

08

00000

000

0

00000

0

0

0.0.0

00000

000

0

LANOING ZONE

SECTORS/TRACK

CYLI NOERS

HEAOS

WRITE PRE-COMPENSATION CYL

CONTROL BYTE

LAND I NG ZONE

SECTORS/TRACK

••• RESERVEO··· DR I VE TYPE 35

OW

08

OW

OW

08

08

08

OW

08

08

00000

000

0

00000

0

0

0.0.0

00000

ODD

0

CYL I NOERS

HEADS

WR I TE PRE-COMPENSA T I ON CYL

CONTROL BYTE

LAND I NG ZONE

SECTORS/TRACK

DR I VE TYPE 36 ••• RESERVED···

CYLINDERS

HEADS

OW

08

OW

OW

08

08

08

OW

08

08

00000

ODD

0

00000

0

0

O. o. a

00000

000

0

DRIVE TYPE 31

OW

08

OW

OW

08

08

08

OW

08

08

00000

000

0

00000

0

0

O. 0.0

00000

ODD

0

DR I VE TYPE 38

OW

08

OW

OW

08

DB

DB

OW

08

DB

00000

ODD

0

00000

0

0

0.0.0

00000

000

0

OR I VE TYPE 39

OW

DB

OW

OW

08

DB

08

OW

DB

DB

00000

000

0

00000

0

0

0.0.0

00000

000

0

DR I VE TYPE 40

OW

08

OW

OW

DB

08

08

OW

DB

DB

00000

000

0

00000

0

0

0.0.0

00000

000

0

DRIVE TYPE 41

OW

DB

OW

OW

DB

08

08

OW

DB

08

00000

000

0

00000

0

0

0.0.0

00000

000

0

DR I VE TYPE 42

OW

08

OW

OW

00000

DOD

0

00000

RESERVED···

••• RESERVED···

RESERVED···

RESERVED···

••• RESERVED···

••• RESERVED···

I WRITE PRE-COMPENSATION CYL

I CONTROL BYTE

LAND I NG ZONE

SECTORS/TRACK

CYLINDERS

HEADS

WR ITE PRE-COMPENSATI ON CYL

CONTROL BYTE

LAND I NG ZONE

SECTORS /TRACK

CYLINDERS

HEAOS

WRITE PRE-COMPENSATION CYL

CONTROL BYTE

LAND I NG ZONE

SECTORS /TRACK

CYL INDERS

HEADS

WRITE PRE-COMPENSATION CYL

CONTROL BYTE

LAND I NG ZONE

SECTORS/TRACK

CYLINDERS

HEADS

WR I TE PRE-COMPENSAT J ON CYL

CONTROL BYTE

LAND j NG ZONE

SECTORS/TRACK

CYL I NOERS

HEADS

WRITE PRE-COMPENSATION CYL

CONTROL BYTE

LAND I NG ZONE

SECTORS/TRACK

CYLINDERS

HEADS

WR I TE PRE-COMPENSAT I ON CYL

ORGS

5-189

IBM PerIanal Computer MACRO Assembler

ORGS - - - - Ob/10/85 COMPATIBILITY MOOULE

Version 2.00

.

."

.,

...

" 0

0698 00

0699 00

069A 00 00

0690 0000

069F 00

00

. 06AO 00

.93

"

06AI 0000

.97 06A3 00 •••

06A4 0000

06A.6 0000

'00 06A8 00

.01 06A9 00

'02 06AA 00 00 00

'03 06AO 0000

. 0 . 06AF 00

.05 0680 00

. 0 .

'07

• 0 •

• 0. 06BI 0000

"

" 0 0683 00

."

0684 0000

" 2 0686 0000

" 3

06B8 00

."

".

06B9 00

06BA 00 00 00

06BO 0000

.17

06BF 00

06CO 00

• 20

'21

.

.22 06CI 0000

.,.

06C3 00

06C4 0000

.25 06C6 0000

' 2 . 06C8 00

'27 06C9 00

. 2 . 06CA 00 00 00

' 2 '

06CO 0000

930 06CF 00

'31 0600 00

'32

933

93.

935 0601 0000

93. 0603 00

'37 0604 0000

' 3 ' 0606 0000

93' 0608 00

•• 0 0609 00

060A 00 00 00 '"

0600 0000

" 3

060F 00

•••

•• 5 •••

•• 7

06EO 00

•••

'50 06E4 0000 ."

06EI 0000

06E3 00

06E6 0000

" 2 06E8 00

" 3 06E9 00

".

".

".

06EA 00 00 00

06ED 0000

06EF 00

06FO 00

DR I VE TYPE 43

D.

DB

D'

D.

DB

DB

DB

D.

DB

DB

D.

DB

D'

D'

DB

DB

DB

D.

DB

DB

D.

DB

D.

D.

DB

DB

DB

D'

DB

DB

D'

DB

D.

D.

DB

DB

DB

D'

DB

DB

D.

DB

D.

D.

DB

DB

DB

D.

DB

DB

DB

DB

DB

D.

DB

DB

0,0,0

00000

000

0

00000

000

0

00000

0

0

0,0,0

00000

000

0

OR I VE TYPE 44

00000

000

0

00000

0

0

0,0,0

00000

000

0

DR I VE TYPE 45

00000

000

0

00000

0

0

0,0,0

00000

000

0

DR I VE TYPE 46

00000

000

0

00000

0

0

0,0,0

00000

000

0

DRIVE TYPE 47

00000

000

0

00000

0

0

0,0,0

00000

000

0

BOOT LOADER INTERRUPT

IP

;; oRG

DRG

BOOT STRAP

J"P

•

OE6F2H

006F2H

EQU S

BOOT _STRAP_I

' . 2 :;: 06FI

" 3 •••

' . 5 •••

•• 7

06F2

06F2

06F2 E9 0000 E

...

•••

06F5

'70 06F5 0008

.71

06F1 FC

972 06F8 00

973 06F9 0 I

97. 06FA 10

.75

97. .,.

06FB 00

06FC 00

••2

..

,

06FO 00

06FE 00

06FF

.

' . 3

'8'

" 5 •••

" 7 •••

" 0 0126 0300

.,

0120 0180

012F OOCO

•• 3 0131 0060 ...

" 7

= 06FF

0129

0129 0411

0133 0030

0'735 0018

0131 OOOC

IP

; ;-

AI

D.

DB

DB

DB

DB

DB

DB

DB

DB

CONF _E EQU

CONF E-CONF TBL-2

MODEL BYTE -

SUB MODEL BYTE

BIOS LEVEL

01110000B

1-'

06-10-85

RESERVED·· •

RESERVED·· •

••• RESERVED···

RESERVED·· •

• •• RESERVED···

DRG

DRG

D.

D.

D•

D.

D.

BAUD RATE INITIALIZATION TABLE

•

OE729H

00129H

2'

12

.. .. 1041

3"

192

RS232

CONTROL BYTE

LAND 1NG ZONE

SECTORS / TRACK

I CYLINDERS

HEADS

WRITE PRE-COMPENSATION CYL

CONTROL BYTE

LAND I NG ZONE

SECTORS / TRACK

CYLINDERS

HEADS

; WRITE PRE-COMPENSATION CYL

CONTROL BYTE

LANDING ZONE

SECTORS / TRACK

CYLINDERS

HEADS

I WR I TE PRE-COMPENSA T I ON CYL

CONTROL BYTE

LAND I NG ZONE

SECTORS/TRACK

CYL I NOERS

HEADS

WRITE PRE-COMPENSATION CYL

CONTROL BYTE

LAND I NG ZONE

SECTORS/TRACK

CYL ENDERS

HEADS

WRITE PRE-COMPENSATION CYL

CONTROL BYTE

LANDING ZONE

SECTORS/TRACK

VECTOR ON TO MOVED BOOT CODE

USE INT 15 H AH= OCOH

CONFIGURATION TABLE FOR THIS SYSTEM

LENGTH OF FOLLOWING TABLE

SYSTEM MODEL BYTE

SYSTEM SUB MODEL TYPE BYTE

BIOS REVISION LEVEL

10000000 :: DMA CHANNEL 3 USE BY BIOS

01000000 :: CASCADED INTERRUPT LEVEL

00100000 :: REAL T I ME CLOCK AVA I LABLE

000 I 0000

RESERVED

2

= KEYBOARD SCAN CODE HOOK 1AH

RESERVED

RESERVED

RESERVED

RESERVED FOR EXPANS I ON

300

.00

1200

2400

4800

9600

TABLE OF VALUES fOR INITIALIZATION

1000 DRG OE139H

5-190 ORGS

IBM Per-sonal Computer MACRO Assemble,..

ORCiS - - - - 06110185 COMPATIBILITY MODULE

Version 2.00 \-10

06-10-85

1001 0139

1002

=

0139

1003 0139 E9 0000 E

1004

1005

1006

1001

1008 082E

1009

=

OeZE

1010 08ZE E9 0000 E

1011

1012

1013

1014

1015 081E

1016 087E 52

1011 081F 3A 45 46 38

1018 0884 2A 36

1019

=

0008

1020

1021

1022

10

1023 0866 80

10240881 40 20 10 08 04

1025 088C 02 01

1026

1021

1028

1029 088E IB FF 00 FF FF FF

1030 IE FF FF FF FF IF

1031 089A FF IF FF I 1 11 05

1032 12 14 19 1509 OF

1033 08.1.6 10 lB 10 0.1. FF 01

1034 13 04 06 01 08 0.1.

1035 08B2 OB OC FF FF FF FF

1036 IC II. 1803 1602

1031 OeBE OE 00 FF FF FF FF

1038 FF FF ZO FF

1039

1040

1041 oece 5E 5F 60 61 62 63

1042 64 65 66 61 FF FF

1043 0804 17 FF 84 FF 13 FF

1044 14 FF 15 FF 16 FF

1045 OeEO FI""

1046

1047

1048

1049 08EI IB 31 32 33 34 35

1050 36 31 38 39 30 20

1051 3D 08 09

1052 08FO 71 11 65 12 14 19

1053

1054

1055

15 69 6F 10 5B 50

00 FF 61 13 64 66

67 68 6.1. 6B 6C 38

1056 21

1051 0909 60 FF 5C 7.1. 18 63

1058

1059

16 62 6E 60 2C 2E

2F FF 2.1. FF 20

1060 091.1. FF

1061

1062

1063

1064 091B 18 21 40 23 24 25

1065

1066

5E 26 2.1. 28 29

28 08 00

SF

1061 092.1. 51 51 45 52 54 59

1068 55 49 4F 50 lB 10

1069

1010

00 FF 41 53 44 46

47 48 4.1. 48 4C 3.1.

1011 22

1072 0943 lE FF 1C 51. 58 43

1013 56 42 4E 40 3C 3E

1074

1015

1016

3F FF 00 FF 20 FF

1017 0955 54 55 56 51 58 59

1018 095B SA 5B 5C 50

1019

10eO

1081 095F 66 69 6.1. 68 6C

1082096460 6E 6F 10 11

1083

1084

1085

1086 0969 31 38 39 20 34 35

1081 36 2B 31 32 33 30

1088

1089

2E

1090

109\ 0916 47 48 49 FF 4B FF

1092 091C 40 FF 4F 50 5\ 52

53 1093

1094

1095

1096

1091

1098 0981

1099

=

0987

1100 0981 E9 0000 E

RS232 10

-

DRG

.JMP

; - - - - - KEYBOARD

00139H

EQU I

RS232_10_'

; ; ORCi

DRG

KEYBOARD 10

JIM'

Oil

KI2

; - - - - -

013

DB

DB

DB

DB

OE8ZEH

0082EH

EQU

I

KEYBOARD_I 0_1

104.105,106,101,108

109. 1 10, I I I , 1 12, I 13

1-----

NUM STATE TABLE

"4

DB '189-456+ 1230.'

KEYBOARD INTERRUPT

; ; ORG

ORO

KB_INT EQU

JMP

OE981H

00981H •

KB_INT_I

I VECTOR ON TO MOVED KEYBOARD CODE

: - - - - - TA8LE OF SHIFT KEYS AND MASK VALUES (EARLY PC) n­

ORO

ORO o.

DB

DB

DB

EQU

OE81EH

0081EH

I NS KEY ; I NSERT KEY

CAPS KEY,NUM KEY, SCROLL KEY, AL T KEY, CTL KEY

LEFT-KEY, RIGHT KEY -

I-K6-

01

08

DB

DB

DB

INS SHIFT

SCAN CODE TA8LES

; INSERT MODE SHIFT

~~~~:~~:~~:~Y~H~:~~TF~CROLL_SHIFT

,ALT_SHIFT ,CTL_SHI FT

21,-1,0,-1,-1,-1,30,-1,-1,-1,-1,31 DB

DB

DB

-I,121,-I,11.Z3,5,18,20,25,21,9,15

16,21,29,10,-1.1.19.4,6,1,8,10

DB

De

11,12,-1,-1,-1.-1,28,26.24,3,22,2

14,13,-1.-1,-1,-1,-1,-1,'

',-I

; - - - - - CTL TABLE SCAN

09 DB 94,95,96,91,98,99.100,101,102,103,-1,-1

DB

DB

1----­

LC TABLE

-1

010 DB o lBH,' 1234567890-.' ,08H,09H

DB

1 19. -1 • 132, - I , 1 15. -1 , I 16. -1 • liT, - 1 • I 18,-1 uc TABLE

DB 27,' !

.'1'

,31, 05EH,' &. () _ +', 08H.0

DB

De

'qwertyu i op[]' ,OOH.-I " asdfgnJk I ; ' , 021H

60H,-1.5CH.·Zllcvbn", •• / · . - I , · · · . - I . ·

'QWERTYU I opi J'

.OOH,-I, 'ASOFGH.JKLI·'

01EH.-l,'IZXCVBNM<>?',-1.0.-I.' '.-1

UC T ABLE SCAN

DB

DB

84,85,86,81,88.89

90.91,92,93

ALT TABL.E SCAN

; - - - - - eASE CASE TABLE

01. DB

DB

11,12,13,-1,15,-1

11,-1,79,80,81.82,83

VECTOR ON TO MOVED RS232 CODE

VECTOR ON TO MOVED KEYBOARD HANDLER

ORGS 5-191

IBM Per~onal Computer MACRO Assembler

ORGS - - - - 06/101B5 COMPATIBILITY MODULE

Version 2.00 1-1 I

06-10-85

1101

1102

, 103

1104

1 105 OC59

1106 '" OC59

1107 OC59 E9 0000 E

11 DB

1109

I I 10

1111

1112 OF57

11 13

=

0F"57

1114 0F"57 E9 0000 E

I I 15

I I 16

1111

11 15

1119 OFCl

1120

1121

1122

1 123

1124

1125

1126

1127

112B

1129 OFC7

1130

1131 OFCl OF

1132 OFC8 02

1133 OFC9 25

1134 OFCA 02

1135 OF"CB OF

1136 OF"CC IB

1137 OFCD FF

1138 OFCE 54

1139 OFCF F6

1140 OFOO OF

1141 OFD I 05

1142

1143

1144

1145

1146 OFD2

147 '" OFD2

148 OF02 E9 0000 E

14'

150

151

152

153 1045

154

155

15.

151

158

159

'.0

1161

1162

1163

1164

1165

1166

I 161

I 166

1169

1110

1171

1172

,,73 1045 0000 E

1114 1041 0000 E

I 175 1049 0000 E

1116 1048 0000 E

I 177 1040 0000 E

1176 104F 0000 E

I

I

1179 1051 0000 E

1 180 1053 0000 E

181 1055 0000 E

182 1057 0000 E

I 183 1059 0000 E

1164 1058 0000 E

1165 1050 0000 E

1186 105F 0000 E

1167 1061 0000 E

116B 1063 0000 E

1169 '" 0020

I 190

1191

1192 1065

1 193

=

1065

1194 1065 E9 0000 E

1195

1196

1197

1198

1199

1200

120 I IOA4

1202 IOA4 38 28 20 OA IF 06

1203 19

1204 10A8 IC 02 a7 06

1205 lOBO aD 00 00 00

1206 '" 0010

1201

120B 1084 71 50 SA OA

1209 19

1210 1088 Ie 02 07 06

121 I IDeo 00 00 00 00 o.

1212

1213 10C4 3B 28 20 OA 1F 06

1214 64

PAGE

; - - - - DISKETTE! fO

; ; ORG

ORG

DISKETTE 10

JMP

; - - - - -

OEC59H

00C59H

EQU S

DISKETTE_lO_1

01 SKETTE INTERRUPT

;; ORG

ORG

DISK INT

.JMF'

OEF51H

OOF57H

EQU S

Dl SK_lNT_'

DISKETTE PARAMETERS

DRG

ORG

OEFC7H

00FC7H

VECTOR ON TO MOVED 0 1 SKETTE CODE

VECTOR ON TO MOVED 0 I SKETTE HANDLER

01 SK BASE

THI SIS THE SET OF PARAMETERS REQUIRED FOR

DISKETTE OPERATION. THEY ARE POINTED AT 8Y THE

DATA VAR1A8LE ~OISK POINTER. TO MODIFY THE PARAMETERS, au

I LD ANOTHER PARAMETER BLOCK AND PO I NT AT IT

DISK_BASE

; ; ORG

ORG

PRINTER 10

- .JMP

LABEL BYTE

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB i----PRINTER

110

11011111B

2

MOTOR WAIT

2 -

15 o

IBH

OFFH

054H

OFbH

15

8

OEFD2H

OOFD2H

EQU S

PRINTER 10 I

; SRT",O, HD UNLOAD=OF 1ST SPECIFY BYTE

; HD LOAD= 1, MODE=DMA 2ND SPEC I FY BYTE

WA ITT I ME AFTER OPERAT I ON TILL MOTOR OFF

5 I 2 BYTES / SECTOR

EDT I LAST SECTOR ON TRACK)

GAP LENGTH

DTL

GAP LENGTH FOR FORMAT

FILL BYTE FOR FORMAT

HEAD SETTLE T I ME (M I LL 1 SECONDS I

MOTOR ST ART T I ME (I /8 SECONDS)

; VECTOR ON TO MOVED PR 1NTER CODE

FOR POSSIBLE COMPATIBILITY ENTRY POINTS

DRG OF045H

DRG 01045H

ASSUME eS:COOE,DS:DATA

"' OW

OW

OW

OW

OW

OW

OW

OW

OW

OW

OW

OW

OW

OW

OW ow

EQU

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

EXTRN

MIL

SET MODE: NEAR

SET-CTYPE:NEAR

SET-CPOS:NEAR

READ CURSOR =NEAR

READ-LPEN:NEAR

ACT

01

SP PAGE, NEAR

SCROLL UP: NEAR

SCROLL -OOWN:NEAR

READ AC CURRENT: NEAR

WR I TE AC CURRENT: NEAR

WR I TE-C CURRENT: NEAR

SET COU5R :NEAR

WRITE DOTINEAR

READ DOT :NEAR

WRITE TTY;NEAR

VIDEO::::STATE;NEAR

OFFSET SET MODE

OFFSET SET-CTYPE

OF"FSET SET-CPOS

OFFSET READ CURSOR

OFFSET READ-LPEN

OFFSET ACT DISP PAGE

OFFSET SCROLL UP

OFFSET SCROLL -DOWN

OFFSET READ AC CURRENT

OFFSET WRITE AC CURRENT

OFFSET WR I TE-C CURRENT

OFFSET SET COLOR

OFFSET WR I TE DOT

OFFSET READ DOT

OFFSET WR I TE TTY

OFFSET V I DEO::::STATE

1-1.41

; ; ORG

ORG

VIDEO 10

JMP

;

-

OFOb5H

01065H

EQU

S

VIDEO_10_I

V IDEO PARAMETERS

11ORG

ORG

OFOA4H

OlOA4H

TABLE OF ROUTINES WITHIN VIDEO I

EXIT STACK VALUES MAY BE fO

DIFFERENT DEPEND I NG ON THE

SYSTEM AND MODEL

I VECTOR ON TO MOVED V IDED CODE

VIDEO PARMS

DB

M'

DB

DB

EQU

DB

DB

DB

DB

LABEL BYTE

3BH,28H,2DH,OAH, !FH,6, !9H

ICH.2,l,b,7

0,0,0,0

I-VIDEO_PARMS

7lH,50H, 5AH, OAH, I FH, b, 19H lCH,2,7,b,7

0,0,0,0

3BH, 2BH. 20H, OAH, 7FH, 6, 64H

SET UP FOR 40X25

I SET UP FOR BOX25

SET UP FOR GRAPH I CS

5-192

ORGS

IBM Personal Computer MACRO Assembler

ORGS - - - - - 06/10/85 COMPATIBILITY MODULE

Ve,..sion 2.00 1-12

06-10-S5

1215 10CB 70 02 01 0607

1216 1000 00 00 00 00

1217

1218 100461 5052 OF 19 06

1219

.9

1220 10DB 19 02 00 DB DC

1221 10EO 00 00 00 00

122Z

1223 10E4 0800

1ZZ4 IOE6 1000

1225 10E8 4000

1226 IDEA 4000

1227

1228

12Z9

1Z30 1 DEC 28 28 50 50 28 Z8

1231 50 50

1232

1233

1234 IOF4 2C 28 20 29 2A 2E

1235

1236

IE 29

1237

1238

1239 1841

1Z40 =1841 lZ41 1641 E9 0000 E

1242

1243

1244

1245

1246 1840

1247 =: 1840

1Z48 1840 E9 0000 E

1249

1250

1251

1252

1253 1859

1254 = 1859

1255 1659 E9 0000 E

1256

1257

1258

1259

1260

1261 1 AlOE

1262 IA6E

1263 lA6E 00 00 00 00 00 00

1264 00 00

1265 IAT6 7E 81 A5 81 BD 99

1266 81 7E

1267 IA7E 7E FF DB FF C3 El

1266 FF 7E

1269 I A86 6C FE FE FE 7C 38

1270 10 00

1211 IA8E 10 38 7C FE 7C 38

1212 10 00

1213 IA96 38 TC 38 FE FE 7C

1214 38 7C

1215 IA9E 10 10 38 7C FE lC

1216 38 lC

1217 IAA6 00 00 18 3C 3C 18

1278 00 00

1279 lAAE FF FF E7 C3 C3 E7

1280 FF FF

1Z81 1AB6 00 3C 66 4:2 42 66

1282 3C 00

1283 I ABE FF C3 99 80 BO 99

1284 C3 FF

1Z85 IAC6 OF OT OF 10 CC CC

1Z66 CC 18

1287 lACE 3C 66 66 66 3C 18

1286 lE 18

1289 lAD6 3F 33 3F 30 30 10

1290 FO EO

1291 lADE IF 63 IF 63 63 67

1292 E6 CO

1293 1AE6 99 SA 3C E1 E1 3C

1294 5A 99

1295

1296 lAEE 80 EO F8 FE Fe EO

1291 80 00

1291' IAFb 02 dE 3E FE 3E DE

1299 02 00

1300 IAFE 16 3C 7E 18 18 7E

1301 3C 18

1302 1806 66 66 66 66 66 00

1303 66 00

1304 1BOE 1F OB DB 78 18 IB

1305 IB 00

1306 lB16 3E 63 38 6C 6C 38

1307 CC 78

1308 IBIE 00 00 00 00 lE 7E

1309 7E 00

1310 1826 18 3C 7E 18 7E 3C

1311

131Z 182E

18 FF

18 3C lE 18 18 18

1313 18 00

1314 1B36 18 18 18 18 7E 3C

1315 18 00

1316 183E 00 18 DC FE OC 18

1311 00 00

1318 IB46 00 30 60 FE 60 30

13 t 9 00 00

1320 IB4E 00 00 co

CO CO FE

1321 00 00

1322 IB56 00 24 66 FF 66 :24

1323 00 00

1324 185E 00 18 3C 7£ FF FF

1325 00 00

1326 1B66 00 FF FF 7£ 3C 18

1321 00 00

1326

ORG

ORG

CRT CHAR GEN

DB

DB

08

08

08

08

08

08

08

DB

08

08

08

08

08

08

DB

08

08

08

08

08

08

08

08

08

08

08

08

08

DB

08

M5

DB

DB

08

70H,2,l,6.1

0,0,0,0

6 IH.50H,52H,OFH, 19H.6, 19H

DB

DB ow ow ow

01

COLUMNS

19H,2,OOH.OBH.OCH

0,0,0,0

2048

4096

16384

16384

; SET UP FOR 60)(25 8&W CARD

TABLE OF REGEN LENCTHS

40)(25

80)(25

GRAPHICS

; - - - - .,

08 40.40,80,80,40,40,80,80

.,

; - - - - -

08 2CH,28H,20H,29H,2AH,2EH,1EH,29H

MEMORY SIZE

; ; ORG OF841H

ORG Ol841H

MEMORY SIZE OET EQU I

JMPMEMORY SIZE_OET_I

; - - - - EQUIPMENT DETERMINE

TABLE OF MODE SETS

VECTOR ON TO MOVED B I OS CODE

; ; ORG

ORG

EQUI PMENT

"MP

1-----

OF840H o

1840H

EQU S

EQU I PMENT_I

CASSETTE (NO B I OS SUPPORT)

; ; ORC

ORG

CASSETTE 10

::iMP

OF859H o

1859H

EQU I

CASSETTE_IO_I

VECTOR ON TO MOVED B I OS CODE

; VECTOR ON TO MOVED 810S CODE

OFA6EH

01 A6EH

LABEL 8YTE

OOOH. OOOH, OOOH. OOOH, OOOH, OOOH,OOOH, OOOH 0_o0 BLANK o

7EH, 06 I H, OA5H, 081 H, OaoH .099H, 06 1H, 07EH 0_01 SMILING FACE

°

7EH, OFFH, OoBH, OFFH, OC3H. OEIH. OFFH, 07EH ; 0_02 SMILING FACE N

06CH. OFEH, OFEH. OFEH, 01CH ,036H.

°

I OH, OOOH 0_o3 HEART

01 OH. 038H, 07CH, OFEH I 07CH, 038H, 0 I OH, OOOH ; 0_o4 DIAMOND

038H! 07CH, 038H. OFEH. OFEH, 01CH, 036H. 01CH 0_05 CLUB

01 OH.

°

I OH. 036H. 07CH, OFEH, 0 7CH, 036H, 01CH O_Ob SPADE

OOOH. OOOH, 0 18H. 03CH, 03CH, 0 18H, OOOH, OOOH 0_01 BULLET

OFFH, OFFH, OE7H,OC3H,OC3H, OE7H,OFFH,OFFH ; o_o8 eULLET NEG

OOOH. 03CH. 066H, 042H, 042H, 066H. 03CH. OOOH 0_09 CIRCLE

OFFH. OC3H, 099H, OBOH, OBDH, 099H, OC3H, OFFH I O_OA

OOFH. 007H, OOFH, 07DH,OCC!"i, OCCH. OCCH, 07SH I D_OB

03CH. Ol;l6H, 066H, 066H, 03CH. O! 8H. 01EH. 0 ISH D_OC

CIRCLE NEG

MALE

FEMALE

03FH. 033H, 03FH, 030H, q30H, 070H, OFOH. OEOH ; 0_00

07FH1 063H, 07FH, 063H, 063H, 061H, OE6H. OCOH ; O_OE

099H, 05AH, 03CH, OEIH, OE1H. 03CH, 05AH, 099H ; O_OF

EIGHTH NOTE

TIO 1/16 NOTE

SUN

OSOH. OEOH. OF8H, OFEH, OF8H, OEOH, 080H, OOOH R ARROWHEAD , 0 10

002H. OOEH, 03EH. OFEH, 03EH, OOEH. 002H, OOOH , 0 II L ARROWHEAD o

18H. 03CH. OTEH, 0 I 8H, 0 ISH ,01EH, 03CH. O! 8H ; 0_12 ARROW 2 VERT

066H. 066H. 066H, ObbH, 066H, OOOH .066H. OOOH ; 0_13

..

07FH, ODBH, ODSH, 0 7BH. 0 I BH. 0 I BH, 0 18H, OOOH I 0

03EH, 063H, 038H, 06CH, 06CH. 036H, OCCH, 076H I 0 -

-

2 EXCLAMAT IONS

PARAGRAPH

.5

SECTION

.,

RECTANGLE OOOH .OOOH, OOOH, OOOH, 07EH. 07EH. 07EH. OOOH • o

18H. 03CH, 0IEH , 0 I 6H, 01EH. 03CH, 0 I 8H, OFFH 0

0 ­

17 ARROW 2 VRT

.8

ARROW VRT UP

UP o

18H,03CH.07EH,OIISH, 0 18H,O 18H, 018H, OOOH 0 o

18H. 0 18H, 0 18H, 0 1 ISH, 01EH, 03CH, 0 18H, OOOH I 0 -

-

••

••

ARROW VRT DOWN

OOOH,O I 6H, OOCH, OFEH, OOCH, 0 I ISH. OOOH, OOOH I 0

-

ARROW RIGHT

OOOH. 030H, ObOH. OFEH, 060H, 030H. OOOH, OOOH

OOOH, OOOH, OCOH. OCOH. OCOH. OFEH. OOOH, OOOH

0

0 -

'8

ARROW LEFT

.e

NOT INVERTED

OOOH, 024H, 066H, OFFH. 066H, Q24H, OOOH, OOOH I 0_10 ARROW 2 HORZ

OOOH. 0 18H, 03CH, 07EH, OFFH. OFFH. OOOH, OOOH

OOOH, OFFH. OFFH, 07EH, 03CH. 0 1 8H, OOOH. OOOH I 0 IF

ARROWHEAD UP

ARROWHEAD OOWN

ORGS .5-193

IBM Personal Computer MACRO Assemb I lOr

ORGS

-----

06/10/85 COMPATIBILITY MODULE

Version 2.00

1329 la6E

1330

1331 IB76 30

00

00 00

,.

00 00 00 00 00 ,.

30 00

30 30 00

1332

1333 187E be be 6C 00 00 00

1334 00 00

1335 1886 be 6C FE 6C FE be

1330 be 00

1331 IB8E 30 1e eo

1338 30 00

1339 IB96

18 oe F.

00 G6 CC 18 30 bb

1340 eb 00 ,.

1342 00

1343 IBA6 bO bO eo 00 00 00

1344 00 00

1345 IBAE I . 30 60 60 60 30

1346 [8 00

1348 bO 00

00 00

..

3C 1349 lBBE 00

1350

FF 3e 66

1351 18C6 00 30 30 FC 30 30

1352 00 00

1353 IBCE 00 00 00 00 00 30

1354 30 .0

1355 IBD6 00 00 00 Fe 00 00

1356 00 00

1357 IBDE 00 00 00 00 00 30

1358 30 00

1359 IBEc 06 OC 18 30 .0 co

13E>0

1361

80 00

1362 lBEE 1e e. CE DE F6 E.

1363 1e 00

1364 IBF6 30 10 30 30 30 30

1365 Fe 00

1366 18FE 18 ee oe 38 60 ee

1367 Fe 00

1368 IC06 18 ee oe 3. oe ee

1369 18 00

1370 ICOE Ie 3e 6C CC FE oe

1311 IE 00

1372 IC16 Fe eo F8 oe oe ee

1373 18 00

1374 IC IE 38 .0 eo F8 CC ee t 375 18 00

1316 I C26 FC ee oe 18 30 30

1311 30 00 ,.

! 319 00

1380 IC36 18 CC ee 1e oe I .

1381 10 00

1382 lC3E 00 30 30 00 00 30

1383 30 00

1384 tC46 00 30 30 00 00 30

1385 30 bO

1386 IC4E 18 30 bO eo .0 30

1387 18 00

1388 IC56 00 00 Fe 00 00 Fe

1389 00 00

1390 IC5E bO 30 I . oe I . 30

1391 .0 00

1392 IG66 78 CC oe I . 30 00

1393 30 00

1394

1395 lC6E lC C6 DE DE DE CO

1396

! 391 IC16 30

1398

1399 IC1E FC 6t:. b6 7e b •

1400

140 I

1402

,.

,. ee 00

FC 00

3e 00 t 403 IC8E F8 .e

1404 F. 00

CC

••

..

CC Fe ee

••

6e

..

••

1405 1C96 FE 62 b. 18 b • • 2

1406 FE 00

1401 1C9E FE b2 b8 18 68 .0

1408 FO 00

1409 ICA6 3e bb co CO eE 66

1410

,.

3E 00

1411 I CAE CC ec CC FC CC ce

1412 ee 00

1413 ICB6

1414

,.

30 30 30 30 30

00

1415 ICBE IE oe oe OC CC ee

1416 18 00

1411 I CC6 E6

••

• e 18 .e 66

1418 E. 00

1419 1 CCE FO .0 60 bO b2 .b

1420 FE 00

1421 IC06 C6 EE FE FE DE> C.

1422 eb 00

1423 lCDE C6 E. F6 DE CE C6

1424 e. 00

1425 ICE6 38 be C6 C6 C6 .e

1426

1427

1429

,.

38 00

1428 ICEE Fe bb b. 1C 60 bO

FO 00

1430 JeF6

1431 ee ee CC DC 18

Ie 00

•• lC 6C 1432 1CFE FC 6b

1433 E6 00

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

DB

1-13

06- I 0-85

OOOH, OOOH, OOOH

I

GOOH. OOOH. OOOH, OOOH, OOOH

030H, 018H, 078H. 030H, 030H, OOOH. 030H. OOOH

06CH. 06CH, 06CH, OOOH, OOOH. OOOH, OOOH, OOOH

06GH, 06CH, OFEH, 06GH. OFEH. 06GH, 06GH, OOOH

030H, 01CH. OCOH. 078H, OOCH. OF8H, 030H. OOOH

OOOH. OC6H. OCCH. 0 18H. 030H. 066H. OC6H. OOOH

038H. 06CH. 038H. 076H. OOCH, OCCH, 016H. OOOH

060H. 060H. OCOH, eOOH, OOOH, OOOH. OOOH, OOOH o 18H. 030H, 060H, 060H

I

060H, 030H, 0 I 8H

I

OOOH

060H. 030H, 0 18H, Ol8H, 018H, 030H,060H, OOOH

OOOH, 066H, 03CH, OFFH

I

03CH. 066H

I

OOOH, OOOH

OOOH, 030H, 030H

I

OFCH. 030H

I

030H, OOOH, OOOH

OOOH, OOOH, OOOH, 00 OH. OOOH. 030H. 030H, 06GH

OOOH. OOOH, OOOH, OFCH

I

OOOH, OOOH, OOOH, OOOH

00 OH. OOOH. OOOH

I

OOOH. OOOH, 030H. 030H. OOOH

006H, OOCH, 0 I 8H, Q30H. 060H. OCOH. 080H. GOOH

07CH, OC6H. OCEH. QOEH. OF6H, OE6H, 07CH, OOOH

030H, 07 OH, 030H. 030H, 030H, 030H

I

OFCH, OOOH

07 8H

I

OGGH, OOCH, 038H, 060H, OGGH. OFCH, 00 OH

078H

I

OCCH. OOCH, 038H, OOCH, OCCH. 07 8H, OOOH

OFCH

I

OCOH. OF 8H, OOCH, OOCH, OCCH. 018H, OOOH

038H, 060H. OCOH. OF8H, OCCH, OCCH. 078H, 0 0 OH

OFCH. OCCH, OOCH, 0 1 8H, 030H, 030H, 030H

I

OOOH o 18H. OCCH. OCCH, 078H, OCCH. OCCH

I

0 78H, OOOH

018H. OCCH, OCCH, 07CH, OOCH, 0 18H, 010H, OOOH

00 OH. 030H. 030H, OOOH, OOOH. 030H

I

030H, OOOH

OOOH, 030H. 030H. OOOH, OOOH. 030H, 030H. 060H o 18H, 030H, 060H, OCOH, 060H. 030H, 0 I 8H. OOOH

OOOH, OOOH. OFCH. eOOH, OOOH, OFCH, OOOH. OOOH

060H, 030H, 0 I 8H, OOCH. 0 I 8H, 030H, 0 bOH, OOOH

018H, OGCH, OOGH, 0 I 8H. 030H, OOOH. 030H. eOOH

07CH. OC6H. OOEH. ODEH, ODEH, OCOH, 078H. OOOH

030H, 07 8H. OCCH. OCCH, OFCH. eCCH. OCCH. OOOH

OFCH

I

066H. 066H. 07CH , 066H, 066H, OFCH, OOOH

03CH, 066H. OCOH. OCOH, OCOH. 066H, 03CH, OOOH

OF8H, 06CH, 066H, 066H. 066H, 06CH, OF8H. OOOH

OFEH, 062H. 068H, 018H, 068H, 062H

I

OFEH

I

OOOH

OFEH, 062H. 068H, 0 18H. 068H, 060H, OFOH, eOOH

03CH. 066H, OCOH, OCOH. OCEH. 066H, 03EH, OOOH

OCCH, OCCH. OCCH, OFCH. OCCH, OCCH

I

OCCH. eOOH

018H. 030H, 030H. 030H, 030H. 030H, 018H. 0 0 OH

01 EH, OOCH, OOCH, OOCH, OCCH, OCCH , 078H, OOOH

OEbH, 066H, 06CH, 018H, 06CH, 066H. OE6H. OOOH

OFOH, 060H, 060H, 060H, 062H. 066H, OFEH, OOOH

OC6H, OEEH. OFEH. OFEH, 006H, OC6H, OC6H. OOOH

OC6H, OEbH. OFbH, ODEH, OCEH. OC6H, OC6H, OOOH

038H, 06CH. OC6H. OC6H, OC6H, 06CH. 038H, OOOH

OFCH

I

066H

I

066H, 01CH, 060H, 060H. OFOH

I

OOOH

018H, OCCH, OCCH. OCCH, OOCH, 018H. 0 I CH, OOOH

OFCH. 066H. 066H, 0 7CH. 06CH. 066H

I

OE6H , eeOH

,

,

,

,

,

0 20

0_21

0

-

22

0 23

0 24

0

-

25 ,

D 2.

D 21

0 30 0

0 31 I

0 440

·

LB.

QUOTATION

S DOLLAR SIGN

D 2B PLUS

COMMA

0 2E o I CH, 03CH, 06CH,OCCH, OFEH.OOCH, 0 I EH,OOOH I 0 -

>4 4

0 38 8

0 48 H

0 4F 0

0 -

50 p

0 51

0 52

PERCENT ·

AMPERSAND

APOSTROPHE

0 ­ 28 [ L. PARENTHES I S

D_2F

0 33 3

0 35 5

0

-

31 1

D 3A

,

0 3B

,

0 3e

0

-

3D

I SLASH

0

-

3E > GREATER THAN

3F > QUESTION MARK 0 -

0 40

0_41 A

·

0_42 B

0

­

43 e

0_45 E

0

-

4. F

0_4 1 G

0

­

49 I

0

-

4A J

0 -

4B K

D_4C L

0_40 104

0 4E N

Q

R

SPACE

EXCLAMATION

R. PARENTHES I S

ASTER I SK

DASH

PERIOD

COLON

SEMI COLON

LESS THAN

EQUAL

DB 0

53 5

1435 00

1436 IDOE FC B4 30 30 30 30

1431

1438 1016 CC CC CC CC CC CC

1439

18 00

Fe 00

,.

1440 IDlE CC CC CC CC CC

1441 30 00

1442 1026 e. eb G6 06 FE EE

DB

DB

DB

018H

I

OCCH, OEOH. 0 70H. 0 I CH. OCCH. 018H. OOOH

OFCH, OB4H, 030H, 030H, 030H, 030H. 0 18H, OOOH

OCCH. OCCH, OCCH. OCCH, OCCH. OCCH, OFCH, 0 0 OH

OCCH

I

OCCH. OCCH. OCCH, OCCH, 07 8H , 030H, OOOH

OC6H

I

OC6H, OC6H, G06H, OFEH, OEEH. OC6H, OOOH

0 -

54 T

0

5. V

0

-

51

•

~

~

5-194

ORGS

[BM Person. I Computer MACRO Assembler

ORGS

-----

06/10/85 COMPATIBIL[TY MODULE

Vers

, "0

2.00

1443

1444 ID2E C6 C6 6C 38

1445

1446 1036 CC CC CC

1441

C6 00 ,.

00

" "

1448 ID3E FE C6 .C 18 32 66

1449

1450 1046

1451

,.

C6 00

,. ,.

6C

,.

FE 00

60 60 60 60 60

DO

1452 ID4E CO 60

1453 02 00

I . OC 06 "

1454 1056 78 IB 18 18 18 , 8

~ 1455

1456 105E

1451

78 00

" 38 6C C6 00

00

1458 1066 00 00 00

1459 00 FF

1460

1461 106E 30 30 I .

1462 00 00

,.

1463 1076 00 00

1464 76 00

1466

OC 7C CC

1C 66 66 1465 107E EO 60

,.

DC 00

1467 1086 00 00 78 CC CO CC

1468

1469 ID8E

00

'c

OC OC 7C CC CC

76 00 1470

1471 1096 00 00 7. ee Fe CO

1412 7. 00

1413 lD9E 38 bC bO FO 60 60

1474 FO 00

1415 1014.6 00 00 16 CC CC 1C

1416 OC F8

1411 lDAE EO 60 6C 76 66 66

1478

1479 lDB6 30

1480

E6 00 ,.

00

00

10 " " "

1481 108E OC 00 OC OC OC CC

1482 CC 18

1483 lDC6 EO 60 66 6e 78 6C

1484 E6 00 ,.

1488

1490

,. C6 00

1489 lODE 00 00 F8 ee CC CC

CC 00

1491 IDE6 00 00 18 CC CC CC

00 1492

1493

1494 IDEE 00 00

1495 60 FO

1496 IOF6 00 00

1491 OC IE

1498 10FE 00 00 DC 76 66 60

1499 FO 00

~

1500 lE06 00 00 7C eo 7.

1501

1502 IEOE

1503

F. 00

" 30 7e 30 30 3.

00

1504 IEI6 00 00 CC CC CC CC

1505 76 00

,.

1506 lEIE 00 00 CC CC CC

1507 30 00

1508 IE26 00 00 C6 06 FE FE

1509 5C 00 t 51 a lE2E 00 00 C6 bC 38 6e

151 I C5 00

1512 IE36 00 00 CC CC CC 7C

1513 OC Fe

1514 IE3E 00 00 FC 98 30 6.

1515 FC 00

1516 IE46 IC 30 30 EO 30 30

1511 IC 00

15 I 8 lE4E I . I . I . 00 I . I .

1519 I . 00

1520 I E56 EO 30 30 IC 30 30

1521 EO 00

1522 IE5E 76 DC 00 00 00 00

1523 00 00

1524 IE66 00 10 3. 6C C6 C6

1525 FE 00

1526

1527

, 528

1529

1530 IE6E

1531 IE6E

'532 IE6E E9 0000 E

1533

1534

1535

1536

1531 lEA5

1538 I EA5

1539 IEA5 E9 0000 E

08

08

08

08

08

08

08

08

08

08

08

DB

08

DB

08

DB

08

DB

DB

08

08

08

08

08

[-[4

06- I 0-85

OC6H, OC6H, 06CH, 038H, 038H, 06CH. OC6H, OOOH

OCCH, OCCH. OCCH, 018H, 030H, 030H, 078H, OOOH

0 5. X

0_514.

,

OFEH. OC6H. 08CH, 0 18H, 032H, 066H, OFEH, OOOH

018H. 060H, 060H, 060H. 060H, 060H, 078H, OOOH 0_5B LEFT BRACKET

OCOH, 060H, 030H, 0 18H, OOCH, 006H, 002H, OOOH I 0_5C \ BACKSLASH

018H,O I 8H, 0 18H, 0 18H, 0 18H, 0 I 8H, 018H, OOOH a I OH, 038H, 06CH, OC6H. OOOH. OOOH, OOOH, OOOH

OOOH. OOOH, OOOH, OOOH, 00 OH. 0 OOH, OOOH, OFFH

0 -

5E "

I R [GHT BRACKET

CIRCUMFLEX

UNDERSCORE

030H. 030H. 0 I 8H. OOOH, 00 OH, OOOH. OOOH. OOOH

OOOH. OOOH. 0 78H. OOCH. 01CH, OCCH. 0 16H. 00 OH

OEOH. 060H. 060H. 01CH, 066H. 066H. ODCH. 00 OH

OOOH. OOOH, 07 8H. OCCH. OCOH. OCCH. 0 7 8H. OOOH

01 CH. OOCH. OOCH. 0 7CH. OCCH. OCeH. 0 76H, OOOH

D -

D 60 b2

0_63

0

·

•

APOSTROPHE REV

0_64 d

OOOH, OOOH, 0 7 8H. OCCH. OFCH. oeOH. 0 18H. OOOH 0_65

038H, 06CH. 060H, OFOH, 060H, 060H. OFOH

0

OOOH I D_66

OOOH, OOOH. a 16H. OCCH, OCCH, 01CH, OOCH

0

OF8H 0_61

, r

OEOH. 060H. 06CH. 0 76H, 066H. 066H, OE6H. OOOH 0_68 h

030H. OOOH. 07 OH. 030H. 030H, 030H. a 78H, OOOH

OOCH, OOOH, OOCH. OOCH

0

OOCH, OCCH, OCCH, 018H

OEOH, 060H, 066H, 06CH, 018H. 06CH, OE6H

0

OOOH

07 OH, 030H, 0 30H. 030H, 030H

0

030H, 078H, OOOH

OOOH, OOOH. OCCH, OFEH, OFEH, OD6H, oe6H, OOOH

OOOH, OOOH, OF8H, OCCH, OCCH, OCCH, oceH, OOOH

0_69

D_6A

0_68

J ,

D_6C I

0_60 m

0 6E

0

OOOH, OOOH, 018H, OCCH, OCCH, OCCH, 078H, OOOH O_oF

08

DB

08

08

DB

DB

08

DRG

DRG

INT

J"P

OOOH, 00 OH. OOCH, 066H. 066H. 0 7CH. 060H, OFOH

OOOH, 0 OOH. 076H, OCCH. OCCH, 0 7CH, OOCH. 0 I EH

OOOH, 0 OOH, ODCH, 076H, 066H. 060H. OFOH

I

OOOH

OOOH, OOOH, 07CH, OCOH, 0 7 8H. OOCH. OF8H, 00 OH

01 OH,030H, 07CH, 030H, 030H

I

034H, 0 18H. OOOH

OOOH, OOOH, OCCH, OCCH. OCCH. OCCH, 0 16H. 00 OH

OOOH, OOOH, OCCH, OCCH. OCCH. 0 18H, 0 30H. OOOH

0

"

72 0 q

D -

,. t

0 75

P

08

08

OOOH, OOOH. OC6H. 006H. OFEH. OFEH, 06CH. OOOH

OOOH, a OOH. OC6H. 06CH. 038H. 06CH, OC6H. OOOH

0

-

11 w

D 7.

DB

08

DB

DB

08

08

08

QOOH, OOOH. OCCH, OCCH. OCCH, 0 1CH. OOCH. OF8H Y

OOOH, OOOH. OFCH, 098H, 030H, 064H, OFCH, OOOH 0 1 A a I CH. 030H. 030H. OEOH, 030H, 030H, a I eH, OOOH I 0 18 o 18H, a 18H, 0 18H, OOOH,O! 8H, a 18H,O 18H, OOOH

OEOH. 030H, 030H, 0 I CH. 030H o 030H, OEOH, OOOH

LEFT BRACE

0 1C BROKEN STROKE

0_70 RIGHT BRACE o 76H. ODCH. OOOH. OOOH, OOOH, OOOH, OOOH, OOOH

OOOH.O I OH. 038H. 06CH, OC6H, OC6H, OFEH, OOOH

0

,

1E TILDE

•

DELTA

;

-----

TIME OF DAY n-

ORG

DRG

OFE6EH

01 E6EH

EOU S

VECTOR ON TO MOVED 810S CODE J"P

TIMER INTERRUPT

OFEA5H o lEASH

EOU S

TIMER INT I VECTOR ON TO MOVED 810S CODE

ORGS 5-195

IBM Per~ol"lal Computer t.4ACRO A~.embler

ORGS - - - - - 06/10/85 COt.4PATIBILITY MODULE

Ver.ion 2.00 1-15

06-10-85

1540

1541

1542

1543

1544 IEF3

1545 IEF3

1546 IEF3 IEA5 R

1541 IEF5 0987 R

1548 I EFT 0000 E

1549 1EF9 0000 E

1550 I EFB

1551 IEFO

0000 E

0000 E

1552 I EFF OF57 R

1553 IFOI 0000 E

1554

1555

1556

1557 lF03 1065 R

1558 IF05 11540 R

1559 IF07 1841 R

1560 IF09 OC59 R

1561 IFOB 0739 R

1562 IFOD 1859 R

1563 I FOF 082E R

1564 IFII OFD2 R

1565 1FI3 0000

1566 IFIS 06F2 R

1567 IFI7 IE6E R

1568 IFI9 IF53 R

1569 IFIB IF53 R

1570 IFID IOA4 R

1571 IF IF OFC7 R

1512 IF21 0000

1513

1514 IF23

1575

1576 IF23 0000 E

1511 IF25 0000

I::

1518 1F21 0000 E

1579 IF29 0000 E

1580 I F2B 0000 E

1581 IF2D 0000 E

1582 I F2F 0000 E

1583 lF31 0000 E

1584

1585

1586

1587

1588 IF53

1589

1590

1591

=

IF53

1592 IF53 CF

1593

1594

1595

1596

1597 IF54

1598 '" IF54

1599 IF54 E9 0000 E

1600

1601

1602

1603

1604

1605

1606

1607 IFFO

1608

1609

1610

1611 1FFO

1612

1613 IFFO EA

1614 IFFI 0015B R

1615 IFF3 FOOO

1616

1617 IFF5 30 36 2F 31 30 2F

1618 38 35

1619

1620 IFFE

1621 IFFE FC

1622

1623 IFFF

1624

COOE

PAGE

; - - - - VECTOR TABLE

; ; ORG aRC

VECTOR TABLE

- ow ow ow ow ow ow ow ow

; - - - - -

OFEF3H o IEF3H

LABEL WORD

OFFSET TIMER INT

OFFSET KB I NT

OFFSET OTI

OFFSET OIl

OFFSET OIl

OFFSET OIl

OFFSET DISK INT

OFFSET 01 , -

AT LOCATION OFEF3H

VECTOR TABLE VALUES FOR POST TESTS

I NT 08H HARDWARE T 1 t.4ER 0

I NT 09H KEYBOARD

INT OAH SLAVE INTERRUPT INPUT

IRQ

IRQ

INT OBH -

INT OCH -

INT ODH -

INT OEH DISKETTE

INT OFH -

IRQ

IRQ

IRQ

IRQ

IRQ

SOFTWARE INTERRUPT~ (BIOS CALLS AND POINTERS) ow ow ow ow ow ow ow ow ow ow ow ow ow

DW

DW

DW

OFFSET VIDEO 10

OFFSET EQU I PMENT

OFFSET MEMORY SIZE DET

OFFSET DISKETTE 10-

OFFSET RS232 10-

OFFSET CASSETTE 10

OFFSET KEYBOARD-IO

OFFSET PR I NTER To

OOOOOH -

OFFSET BOOT STRAP

OFFSET TIt.4E-OF DAY

OFFSET DUMMY RETURN

OFFSET DUMMY-RETURN

OFFSET V I DEO-PARMS

OFFSET

OOOOOH

0 I SK BASE

-

INT IOH -VIDEO DISPLAY

INT IIH -- GET EQUIPMENT FLAG WORD

INT 12H -- GET REAL t.40DE t.4Et.40RY SIZE

INT 13H -- DISKETTE

INT 14H -- COt.4t.4UNICATION ADAPTER

I NT 15H -- EXPANDED e

I OS FUNCTI ON CALL

INT 16H -- KEYBOARD INPUT

I NT I 7H - PR

I

NTER OUTPUT

INT 18H -OF600H INSERTED FOR BASIC

INT 19H -- BOOT FROt.4 SYSTEt.4 t.4EDIA

INT IAH -- Tlt.4E OF DAY

INT IBH -- KEYBOARD BREAK ADDRESS

INT ICH -- Tlt.4ER BREAK ADDRESS

INT IDH -- VIDEO PARAt.4ETERS

INT IEH -- DISKETTE PARAt.4ETERS tNT IFH -- POINTER TO VID~O EXTENSION

SLAVE_ VECTOR_TABLE LABEL WORD ( INTERRUPT 70H THRU lFH )

DW

DW

DW

DW ow

DW

DW ow

OFFSET RTC INT

OFFSET RE DIRECT

OFFSET' oTI

OFFSET 01'

OFFSET 01 I

OFFSET tNT 287

OFFSET olT

OFFSET 011

DUt.4t.4Y J NTERRUPT HANDLER ; - - - - -

; ;aRC aRC

OFF53H o

IF53H

EOU DUMMY_RETURN

IRET

; - - - - PRINT SCREEN

; ; ORG aRC

PR I NT SCREEN

Jt.4P

.LIST

;-----------­

OFF54H o

IF54H

EQU S

PR I NT _SCREEN_I

POWER ON RESET VECTOR

;

; ; -

-------------­

ORG OFFFOH

ORG OIFFOH

:-----

POWER ON RESET

P _O_R LABEL FAR

DB ow ow

OEAH

OFFSET RESET

OFOOOH

DB '06/tO/85'

INT 70H REAL Ttt.4E CLOCK

INT 71H

INT 72H -

REDIRECT TO INT OAH

INT 13H -

INT 74H -

INT 75H

INT T6H -

INT 11H -

-t.4ATH COPROCESSOR

-FIXED DISK

IRQ

IRQ

8

9

IRQ 10

IRQ II

IRQ

'2

IRQ 13

IRQ '4

IRQ 15

B I OS DUt.4t.4Y (NULL I I NTERRUPT RETURN

J VECTOR ON TO MOVED B I OS CODE

; TUTOR

POWER ON RESTART EXECUTION LOCATION

HARD CODE FAR JUt.4P TO SET

OFFSET

SEGMENT

RELEASE t.4ARKER aRC os

ENDS

END o IFFEH

MODEL_BYTE THIS PC'S 10 ( MOOEL BYTE )

CHECKSUM AT LAST LOCATiON

5-196 ORGS

SECTION 6. INSTRUCTION SET

Contents

80286 Instruction Set .............................. 6-3

Data Transfer ................................. 6-3

Arithmetic .................................... 6-6

Logic ........................................ 6-9

String Manipulation ............................ 6-11

Control Transfer .............................. 6-13

Processor Control ............................. 6-17

Protection Control ............................ 6-18

80287 Coprocessor Instruction Set ................... 6-22

Data Transfer ................................ 6-22

Comparison .................................. 6-23

Constants ................................... 6-24

Arithmetic ................................... 6-25

Transcendental ............................... 6-26

Instruction Set 6-1

Notes:

6-2 Instruction Set

80286 Instruction Set

r--..

Data Transfer

MOV = move

Register to Register/Memory

1000100w mod reg r/w

Register/Memory to Register

1000101w mod reg r/w

Immediate to Register/Memory

1100011w mod 000 r/w data

Immediate to Register

1011wreg data data if w data if w

= 1

= 1

Memory to Accumulator

1010000w addr-low addr-high

Accumulator to Memory

1010001w addr-low addr-high

Register/Memory to Segment Register

10001110 modOreg r/w reg ¢ 01

Segment Register to Register/Memory

10001100 modOreg r/w

PUSH = Push

Memory

11111111 mod 110 r/w

Instruction Set 6-3

Register

01010reg

Segment Register

OOOreg 110

Immediate

011010s0 data

PUSHA = Push AIl

01100000

POP = POp

Memory

\

10001111 modOOO rim

Register

I

01011reg

Segment Register

OOOreg111 reg ". 01

POPA = Pop AIl

01100001 data if s 0

XCHG = Exchange

Register/Memory with Register

1000011w mod reg rim

Register with Accumulator

10010reg

6-4 Instruction Set

IN = Input From

Fixed Port

1110010w port

Variable Port

1110110w

OUT = Output To

Fixed Port

1110011w port

Variable Port

1110111w

XLAT = Translate Byte to AL

11010111

~ LEA = Load EA to Register

10001101

I mod reg rIm

LDS = Load Pointer to DS

11000101

I mod reg rIm mod

~

11

LES = Load Pointer to ES

11000100

I mod reg rIm mod

~

11

LAHF = Load AH with Flags

I

10011111

~ SAHF = Store AH with Flags

10011110

Instniction Set 6-5

PUSHF = Push Flags

I

10011100

POPF = POp Flags

I

10011101

Arithmetic

ADD = Add

Register/Memory with Register to Either

OOOOOOOw mod reg rim

Immediate to Register Memory

100000sw modOOO rim data

Immediate to Accumulator

0000010w data data if w data if sw 01

ADC = Add with Carry

Register/Memory with Register to Either

000100dw mod reg rim

Immediate to Register/Memory

100000sw modOOO rim data

Immediate to Accumulator

0001010w data data if w data if sw 01

INC = Increment

Register/Memory l111111w modOOO rim

6-6 Instruction Set

Register

OlOOOreg

SUB = Subtract

Register/Memory with Register to Either

OOlOlOdw mod reg rim

Immediate from Register/Memory

100000sw modlOl rim data

Immediate from Accumulator

OOlOllOw data data if w data if sw 01

SBB = Subtract with Borrow

Register/Memory with Register to Either

OOOllOdw mod reg rim

Immediate to Register/Memory

100000sw modOll rim data

Immediate to Accumulator

OOOlllOw data data if w data if sw 01

DEC = Decrement

Register/Memory lllllllw modOOl rim

Register

OlOOlreg

CMP = Compare

Register/Memory with Register

OOlllOlw mod reg rim

Instruction Set 6-7

Register with RegisterlMemory

OOlllOOw

I mod reg rim

Immediate with RegisterlMemory lOOOOOsw

I modlll rim data

Immediate with Accumulator

0001 I law data data if w

=

I data if sw = 01

NEG = Change Sign

I lll101lw

I modOll rim

AAA

=

ASCII Adjust for Add

I

00 110111

DEC = Decimal Adjust for Add

I

00100111

AAS = ASCII Adjust for Subtract

00111111

DAS = Decimal Adjust for Subtract

00110111

MUL = Multiply (Unsigned)

I

11l101lw

I modlOO rim

IMUL = Integer Mtiltiply (Signed)

I

1111011w

I modl0l rim

6-8 Instruction Set

IIMUL = Integer Immediate Multiply (Signed)

I

01101051

I mod reg rim Data

I

Data if 5 = 0

DIV = Divide (Unsigned)

~

1111011w

I mod110 rim

IDIV = Integer Divide (Signed)

1111011w

I mod111 rim

AAM = ASCII Adjust for Multiply

I

11010100

I

00001010

AAD = ASCII Adjust for Divide

11010101

I

00001010

CBW = Convert Byte to Word

~ 10011000

CWD = Convert Word to Double Word

10011001

Logic

Shift/Rotate Instructions

RegisterlMemory by 1

1101000w

I mod TTT rim

RegisterlMemory by CL

1101001w mod TTT rim

Instruction Set 6-9

Register/Memory by Count

1I00000w mod TTT rIm count

T T T

000

001

010

OIl

100

101

III

Instruction

ROL

ROR

RCL

RCR

SHL/SAL

SHR

SAR

AND = And

Register/Memory and Register to Either

OOIOOOdw mod reg rIm

Immmediate to Register/Memory

1000000w modOOO rIm data

Immediate to Accumulator

OOIOOIOw data data if w data if w

TEST = AND Function to Flags; No Result

Register/Memory and Register

10000lOw mod reg rIm

Immediate Data and Register/Memory

1III011w modOOO rIm data

Immediate to Accumulator

00001 lOw data data if w data if w

Or= Or

Register/Memory and Register to Either

0000 Odw mod reg rIm

6-10 Instruction Set

Immediate to Register/Memory

1000000w modOOl rim data data if w

=

1

Immediate to Accumulator

0000l10w data data if w = 1

XOR = Exclusive OR

Register/Memory and Register to Either

00l100dw mod reg rim

Immediate to Register/Memory

1000000w modll0 rim data

Immediate to Accumulator

0010010w data data if w data if w = 1

NOT = Invert Register/Memory

1111011w modOl0 rim

String Manipulation

MOVS

=

Move Byte Word

1010010w

CMPS = Compare Byte Word

1010011w

SCAS

=

Scan Byte Word

1010111w

LODS

=

Load Byte Word to AL/AX

101Oll0w

Instruction Set 6-11

STOS = Store Byte Word from AL/AX

1010101w

INS = Input Byte from DX Port

0110110w

OUTS = Output Byte Word to DX Port

0110111w

REP/REPNE, REPZ/REPNZ = Repeat String

Repeat Move String

11110011 1010010w

Repeat Compare String (z/Not z)

1111001z 1010011w

Repeat Scan String (z/Not z)

1111001z 1010111w

Repeat Load String

11110011 1010110w

Repeat Store String

11110011 1010101w

Repeat Input String

11110011 011011 Ow

Repeat Output String

11110011 1010011w

6-12 Instruction Set

Control Transfer

CALL = Call

Direct Within Segment

11101000 disp-low disp-high

Register/Memory Indirect Within Segment

11111111 modOl0 rim

Direct Intersegment

10011010 Segment Offset Segment Selector

Indirect Intersegment

11111111 modOll rim (mod ~ 11)

JMP = Unconditional Jump

Short/Long

11101011 disp-low

Direct within Segment

11101001 disp-low

Direct Intersegment

11101010 Segment Offset disp-high

Register/Memory Indirect Within Segment

11111111 mod100 rim

Segment Selector

Indirect Intersegment

11111111 mod101 rim (mod ~ 11)

RET

=

Return from Call

Within Segment

11000011

Instruction Set 6-13

Within Segment Adding Immediate to SP

11000010

I data-low data-high

Intersegment

11001011

Intersegment Adding Immediate to SP

11001010 data-low data-high

JE/JZ = Jump on Equal/Zero

01110100 disp

JL/JNGE = Jump on Less/Not Greater, or Equal

01111100 disp

JLE/JNG

=

Jump on Less, or Equal/Not Greater

01111110 disp

JB/JNAE = Jump on Below/Not Above, or Equal

01110010 disp

JBE/JNA = Jump on Below, or Equal/Not Above

01110110 disp

JP/ JPE

=

Jump on Parity/Parity Even

I

01111010

I disp

JO = Jump on Overflow

01110000 disp

JS = Jump on Sign

01111000 disp

6-14 Instruction Set

JNE/JNZ

I

01110101

=

Jump on Not Equal/Not Zero

I disp

JNL/JGE =

~

I

01111101

Jump on Not Less/Greater, or Equal

I disp

JNLE/JG

=

Jump on Not Less, or Equal/ Greater

I

01111111

I d i sp

JNB/JAE =

I

01110011

Jump on Not Below/Above, or Equal

I disp

JNBE/JA =

I

01110111

Jump on Not Below, or Equal/Above

I disp

JNP/ JPO =

~

I

01111011

Jump on Not Parity/Parity Odd

I disp

JNO

=

Jump on Not Overflow

I

01110001

I disp

JNS = Jump on Not Sign

I

01111011 disp

LOOP = Loop

11100010 ex Times

I disp

LOOPZ/LOOPE = Loop while Zero/Equal

11100001 disp

Instruction Set 6-15

LOOPNZ/LOOPNE = Loop while Not Zero/Not Equal

I

11100000

I disp

JCXZ = Jump on CX Zero

11100011

I disp

ENTER = Enter Procedure

11001000

I data-low data-high

LEAVE = Leave Procedure

11001001

INT = Interrupt

Type Specified

11001101 Type

Type 3

11001100

INTO = Interrupt on Overflow

11001110

IRET = Interrupt Return

11001111

BOUND = Detect Value Out of Range

01100010 mod reg rim

6-16 Instruction Set

Processor Control

CLC = Clear Carry

11111000

= Complement Carry

11110101

STC = Set Carry

11111001

CLD = Clear Direction

11111100

STD = Set Direction

11111101

11111010

STI = Set Interrupt

11111011

HLT = Halt

11110100

WAIT = Wait

10011011

= Bus Lock Prefix

11110000

Instruction Set 6-17

CTS = Clear Task Switched Flag

I

00001111

I

00000110

ESC = Processor Extension Escape

11011TTT modLLL rim

Protection Control

LGDT = Load Global Descriptor Table Register

I

00001111

I

00000001

I modOl0 rim

SGDT = Store Global Descriptor Table Register

I

00001111

I

00000001

I modOOO rim

LIDT

=

Load Interrupt Descriptor Table Register

I

00001111

I

00000001

I modOll rim

SIDT = Store Interrupt Descriptor Table Register

I

00001111

I

00000001

I modOOl rim

LLDT = Load Local Descriptor Table Register from

Register/Memory

I

00001111

I

00000000

I modOl0 rim

SLDT = Store Local Descriptor Table Register from

Register/Memory

I

00001111

I

00000000

I modOOO rim

LTR = Load Task Register from Register/Memory

00001111 00000000 modOll rim

6-18 Instruction Set

STR = Store Task Register to Register/Memory

I

00001111

I

00000000

I modOOl rim

LMSW = Load Machine Status Word from Register/Memory

I

00001111

I

00000001

I modll0 rim

SMSW = Store Machine Status Word

I

00001111

I

00000001

I modl00 rim

LAR = Load Access Rights from Register/Memory

I

00001111

I

00000010

I mod reg rim

LSL = Load Segment Limit from Register/Memory

I

00001111

I

00000011

I mod reg rim

ARPL = Adjust Requested Privilege Level from Register/Memory

I

01100011

I mod reg rim

VERR = Verify Read Access; Register/Memory

I

00001111

I

00000000 modl00 rim

VERR = Verify Write Access

00001111 00000000 modl0l rim

Instruction Set 6-19

The effective address (EA) of the memory operand is computed according to the mod and rim fields:

If mod

If mod

=

11, then rim is treated as a reg field.

=

00, then disp

=

0, disp-low and disp-high are absent.

If mod = 01, then disp

= disp-low sign-extended to 16 bits, disp-high is absent.

If mod

=

10, then disp = disp-high:disp-low.

If rim

If rim

= 000, then EA = (BX) + (SI) + DISP

= 001, then EA = (BX) + (SI) + DISP

If rim

If rim = 011, then EA

If rim = 100, then EA = (SI)

If rim

=

010, then EA

=

=

(BP)

(BP)

+

+

(SI)

(DI)

+

DISP

+

= 101, then EA = (DI) + DISP

+

If rim = 110, then EA = (BP)

If rim

+ DISP

= 111, then EA = (BX) + DISP

DISP

DISP

DISP follows the second byte of the instruction (before data if required).

Note: An exception to the above statements occurs when mod=OO and r/m= 110, in which case EA = disp-high; disp-low.

Segment Override Prefix

00lregOOl r-..,

6-20 Instruction Set

The 2-bit and 3-bit reg fields are defined as follows:

2-Bit reg Field reg Segment Register reg Segment Register

00

01

ES

CS

10

11

SS

DS

3-Bit reg Field

16-bit (w

= 1)

000 AX

001 CX

010 DX

011 BX

100 SP

101 BP

110 SI

111 D I a-bit (w

= 0)

000 AL

001 CL

010 DL

011 BL

100 AH

101 CH

110 DH

111 BH

The physical addresses of all operands addressed by the BP register are computed using the SS segment register. The physical addresses of the destination operands of the string primitive operations (those addressed by the DI register) are computed using the ES segment, which may not be overridden.

Instruction Set 6-21

80287 Coprocessor Instruction Set

The following is an instruction set summary for the 80287 coprocessor. In the following, the bit pattern for escape is 11011.

Data Transfer

FLD = Load

Integer/Real Memory to ST(O) escape MF 1

I mod 000 rim

Long Integer Memory to ST(O) escape 111

I mod 101 rim

Temporary Real Memory to ST(O) escape 011

I mod 101 rim

BCD Memory to ST(O) escape 111

I mod 100 rim

ST(i) to ST(O) escape 001 11000ST(i)

FST = Store

ST(O) to Integer/Real Memory escape MF 1

I mod 010 rim

ST(O) to ST(i) escape 101 11010 ST( i)

FSTP = Store and Pop

ST(O) to Integer/Real Memory escape MF 1 modOllr/m

6-22 Instruction Set

ST(O) to Long Integer Memory escape 111 mod 111 rim

ST(O) to Temporary Real Memory

~ escape 011 mod 111 rim

ST(O) to BCD Memory escape 111 mod 110 rim sT( 0) to ST(i) escape 101 11011 ST( i )

FXCH = Exchange ST(i) and ST(O)

I escape 001

I

11001 ST(i)

,,,-....

Comparison

FCOM

=

Compare

IntegerlReal Memory to ST(O) escape MF 0 mod 010 rim

ST(i) to ST(O) escape 000 11010 ST( i )

".-..."

FCOMP = Compare and Pop

IntegerlReal Memory to ST(O) escape MF 0 mod 011 rim

ST( i) to ST(O) escape 000 11010 ST( i )

Instruction Set 6-23

FCOMPP = Compare ST(i) to ST(O) and Pop Twice

I escape 110

I

11011001

FTST = Test ST(O)

I escape 001

I

11100100

FXAM = Examine ST(O) escape 001 11100101

Constants

FLDZ

=

Load + 0.0 into ST(O)

I escape 000

I

11101110

FLDI = Load + 1.0 into ST(O)

I escape 001

I

11101000

FLDPI

=

Load

'IT into ST(O)

I escape 001

I

11101011

FLDL2T = Load IOg2 10 into ST(O)

I escape 001

I

11101001

FLDLG2 = Load IOglO 2 into ST(O)

I escape 001

I

11101100

FLDLN2 = Load lo~ 2 into ST(O)

I escape 001

I

11101101

6-24 Instruction Set

Arithmetic

,.-..

FADD = Addition

Integer/Real Memory with ST(O) escape MF 0 mod 000 rim

STeil and ST(O) escape dPO 11000 STeil

FSUB = Subtraction

Integer/Real Memory wi th ST(O) escape MF 0 mod lOR rim

ST( i ) and ST(O) escape dPO 1110R rim

~

FMUL = Multiplication

Integer/Real Memory with ST(O) escape MF 0 mod 001 rim

ST( i ) and ST(O) escape dPO 11001 rim

FDIV = Division

Integer/Real Memory with ST(O) escape MF 0 mod llR rim

STeil and ST(O) escape dPO 1111R rim

~

FSQRT = Square Root of ST(O)

I escape 001

I

11111010

Instruction Set 6-25

FSCALE = Scale ST(O) by ST(1)

I escape 001

I

11111101

FPREM = Partial Remainder of ST(O) + ST(1)

I escape 001 11111000

FRNDINT = Round ST(O) to Integer

I escape 001

I

11111100

FXTRACT = Extract Components of ST(O)

I escape 001 11110100

FADS = Absolute Value of ST(O)

I escape 001

I

11100001

Fcns = Change Sign of ST(O)

I escape 001

I

11100000

Transcendental

FPTAN = Partial Tangent of ST(O)

I escape 001

I

11110010

FPATAN = Partial Arctangent of ST(O) -7ST(1)

I escape 001

I

11110011

F2XM1

=

2S

T (O) -1

I escape 001

I

11110000

FYL2X = ST(l) X Log

2

[ST(O)]

I escape 001

I

11110001

6-26 Instruction Set

FYL2XP1 = ST(l) x Log

2

[ST(O) + 1]

I escape 001

I

11111001

FINIT = Initialize NPX

I escape 011

I

11100011

FSETPM = Enter Protected Mode

I escape 011

I

11100100

FSTSWAX = Store Control Word

I escape 111

I

11100000

FLDCW = Load Control Word

I escape 001

I mod 101 rim

FSTCW = Store Control Word

I escape 001

I mod 111 rim

FSTSW = Store Status Word

I escape 101

I mod 101 rim

FCLEX = Clear Exceptions

I escape 011

I

11100010

FSTENV = Store Environment

I escape 001

I mod 110 rim

FLDENV = Load Environment escape 001 mod 100 rim

Instruction Set 6-27

FSAVE = Save State escape 101

I mod 110 rim

FRSTOR = Restore State

I escape 101

I mod 100 rim

FINCSTP = Increment Stack Pointer escape 001

I

11110111

FDECSTP = Decrement Stack Pointer escape 001

I

111100110

FFREE = Free ST(i) escape 101

I

11000sT(i)

FNOP = No Operation escape 101 11010000

6-28 Instruction Set

MF is assigned as follows:

MF Memory Format

00

~

10

11

32-bit Real

32-bit Integer

64-bit Real

16-bit Integer

The other abbreviations are as follows:

Term

ST d

P

R

Definition Bit = 0 Bit

'" 0

Stack top

Reverse*

Stack top

Destination Dest. is ST(O)

Pop No pop

(i )= ith register from the top

Dest. is ST( i )

Pop

Dest. (op) source Source (op) dest.

*

When d=l, reverse the sense of R.

Instruction Set 6-29

Notes:

6-30 Instruction Set

SECTION 7. CHARACTERS,

KEYSTROKES, AND COLORS

Contents

Character Codes .................................. 7-3

Quick Reference ................................. 7-14

Characters, Keystrokes, and Colors 7-1

Notes:

7-2 Characters, Keystrokes, and Colors

Character Codes

As Text Attributes

Value As Characters

Color/Graphics

Monitor Adapter

IBM

Monochrome

Display

Adapter Hex Dec Symbol Keystrokes Modes Background Foreground

00 0 Blank etrl2

(Null)

Black Black Non-Display

01

02 2

03

04 4

05

06 6

07 7

08 8

(;J elrl

•

etrl B

Black

Black

BI,

Green

Unu", """

Normal

•

•

GtrlG

GtrlD

+

• Gtrl E etrl F etrl G

Black

Black

Gyan

Red

Magenta

Brown

Light Grey

Normal

Normal

Normal

Gtrl H, Black Dark Grey Non-Display

Backspace,

Shift

Backspace

09 9

OA 10

OB 11

00 13

OE 14

OF 15

10 16

13 19

20

15 21

17 23 etrll Black Light Blue High Intensity

Underline

0

Black Light Green High Intensity Gtrl J, elrl...-J

Irl K

Black

Light Gyan High Intensity

Light High ltensity d'

9

}1

Black Light

Magenta

High Intensity Gtrl M,-.-J'

Shift....-J etrl N ~

GtrlO ~

~

1 etrl P

.. etll Q

I

!! etrl S

Black

Blue

Blue

Yellow

White

Black

Blu, eyan

High Intensity

High Intensity

Normal

Underline

Normal

1­ etrl T TI

§

etrl U Blue Magenta Normal

-

Gtrl V Blue Browl Normal

GtrlW Blue

)rmal

Light Grey Normal

Characters, Keystrokes, and Colors 7-3

As Text Attributes

21 33

22 34

23 35

24 36

25 37

26 38

27 39

28 40

29 41

Value

18 24

As Characters

Hex Dec Symbol Keystrokes Modes Background Foreground

Blue

Color/Graphics

Monitor Adapter

IBM

Monochrome

Display

Adapter

Dark Grey High Intensity

19 25

T Gtrl X

1 Gtrl Y Blue Light Blue High Intensity

Underline

1A 26

1B 27

--+ Gtrl Z Blue

Blue

Light Green High Intensity

Light Gyan Hig h Intensity

1G 28

10 29

Gtrl [,

Esc, Shift

Esc, Grtl

Esc

L Gtrl\

~

Gtrl J

Blue

Blue

Light Red High Intensity

Light

Magenta

High Intensity

1E 30

1F 31

A Gtrl6

T Gtrl-

20 32 Blank

Space

Space Bar,

Shift,

Space,

Gtrl Space,

Alt Space

Blue

Blue

Green

Yellow

White

Black

High Intensity

High Intensity

Normal

2A 42

2B 43

2G 44

2D 45

2E 46

!

"

#

$

%

&

,

(

)

*

+

,

-

!

"

#

$

%

&

,

(

)

*

-

+

,

Shift Green

Shift Green

Shift Green

Shift Green

Shift Green

Shift Green

Green

Shift Green

Shift Green

Note 1 Green

Shift Green

Green

Green

Note 2 Green

Blue

Green

Underline

Normal

Normal Gyan

Red

Magenta

Brown

Normal

Normal

Normal

Light Grey Normal

Dark Grey High Intensity

Light Blue High Intensity

Underline

Light Green High Intensity

Light Gyan High Intensity

Light Red High Intensity

Light

Magenta

High Intensity

Yellow High Intensity

7-4 Characters, Keystrokes, and Colors

As Text Attributes

Value As Characters

Color/Graphics

Monitor Adapter

IBM

Monochrome

Display

Adapter Hex Dec Symbol Keystrokes Modes Background Foreground

2F 47 / / Green White High Intensity

30 48 0 0 Note 3 Cyan Black Normal

31 49 1 1 Note 3 Cyan Blue Underline

32 50 2 2 Note 3 Cyan Green Normal

33 51

34 52

3

4

3

4

Note 3 Cyan

Note 3 Cyan

Cyan

Red

Normal

Normal

35 53

36 54

37 55

38 56

39 57

7

8

5

6

9

5

6

7

8

9

Note 3 Cyan

Note 3 Cyan

Note 3 Cyan

Note 3 Cyan

Note 3 Cyan

Magenta

Brown

Normal

Normal

Light Grey Normal

Dark Grey High Intensity

Light Blue High Intensity

Underline

3A 58

3B 59

3C 60

3D 61

3E 62

3F 63

40 64

41 65

42 66

43 67

44 68

45 69

46 70

47 71

48 72

49 73

4A 74

<

=

>

?

@

A

B

C

D

E

F

G

H

I

J

<

=

>

?

@

A

B

C

D

E

F

G

H

I

J

Shift Cyan

Cyan

Shift Cyan

Cyan

Shift Cyan

Shift Cyan

Shift Red

Note 4 Red

Note 4 Red

Note 4 Red

Note 4 Red

Note4 Red

Note 4 Red

Note 4 Red

Note 4 Red

Note 4 Red

Note 4 Red

Light Green High Intensity

Light Cyan H ig h Intensity

Light Red High Intensity

Light

Magenta

High Intensity

Yellow

White

Black

H ig h Intensity

High Intensity

Normal

Underline Blue

Green

Cyan

Red

Magenta

Normal

Normal

Normal

Normal

Brown Normal

Light Grey Normal

Dark Grey High Intensity

Light Blue High Intensity

Underline

Light Green High Intensity

Characters, Keystrokes, and Colors 7-5

As Text Attributes

Value As Characters

Color/Graphics

Monitor Adapter

IBM

Monochrome

Display

Adapter Hex Dec Symbol Keystrokes Modes Background Foreground

4B 75 K K Note 4 Red Light Cyan High Intensity

4C 76

40 77

L

M

L

M

Note 4 Red

Note 4 Red

Light Red

Light

Magenta

High Intensity

High Intensity

4E 78

4F 79

50 80

51 81

52 82

53

54 84

55

83

85

56 86

57 87

58 88

59 89

N

0

P

Q

R

S

T

U

V

W

X

Y

N

0

P

Q

R

S

T

U

V

W

X

Y

Note 4 Red

Note 4 Red

Note 4 Magenta

Note 4 Magenta

Note 4 Magenta

Note 4 Magenta

Note 4 Magenta

Note 4 Magenta

Note4 Magenta

Note4 Magenta

Note 4 Magenta

Note 4 Magenta

Yellow

White

Black

Blue

Green

Cyan

Red

Magenta

Brown

Hi.gh Intensity

High Intensity

Normal

Underline

Normal

Normal

Normal

Normal

Normal

Light Grey Normal

Dark Grey High Intensity

Light Blue High Intensity

Underline

Z 5A 90

5B 91

5C 92

50 93

5E 94

5F 95

60 96

61 97

62 98

63 99

64 100

65 101

66 102

[

\

[

A

-

, c d e f a b

Z

[

\

A

J

-

, a b c d e f

Note 4 Magenta

Magenta

Magenta

Magenta

Shift Magenta

Shift Magenta

Brown

Note 5 Brown

Note 5 Brown

Note 5 Brown

Note 5 Brown

Note 5 Brown

Note 5 Brown

Light Green High Intensity

Light Cyan High Intensity

Light Red High Intensity

Light

Magenta

High Intensity

Yellow High Intensity

High Intensity White

Black

Blue

Green

Normal

Underline

Normal

Normal Cyan

Red

Magenta

Brown

Normal

Normal

Normal

,~

7-6 Characters, Keystrokes, and Colors

As Text Attributes

6E 110

6F 111

70 112

71 113

72 114

73 115

74 116

75 117

76 118

Value As Characters

Color/Graphics

Monitor Adapter

IBM

Monochrome

Display

Adapter Hex Dec Symbol Keystrokes Modes Background Foreground

67 103 g g Note 5 Brown Light Grey Normal

68 104

69 105 h i h i

Note 5 Brown

Note 5 Brown

Oark Grey High Intensity

Light Blue High Intensity

Underline

6A 106

6B 107 j k j k

Note 5 Brown

Note 5 Brown

Light Green High Intensity

Light Cyan High Intensity

6C 108

60 109

I m

I m

Note 5 Brown

Note 5 Brown

Light Red High Intensity

Light

Magenta

High Intensity n n

0

P q r s t u v

0

P q r s t u v

Note 5 Brown

Note 5 Brown

Yellow

White

Note 5 Light Grey Black

Note 5 Light Grey Blue

Note 5 Light Grey Green

Note 5 Light Grey Cyan

Note 5 Light Grey Red

Note 5 Light Grey Magenta

Note 5 Light Grey Brown

High Intensity

High Intensity

Reverse Video

Underline

Normal

Normal

Normal

Normal

Normal

77 119

78 120

79

7A

7B

7C

121

122

123

124

70 125

7E

7F

126

127 w x y z

{

I

I

I

~

L. w x y z

{

I

I

I

~

Ctrl -

Note 5 Light Grey Light Grey Normal

Note 5 Light Grey OarkGrey Reverse Video

Note 5 Light Grey Light Blue High Intensity

Underline

Note 5 Light Grey Light Green High Intensity

Shift Light Grey Light Cyan High Intensity

Shift Light Grey Light Red High Intensity

Shift Light Grey Light

Magenta

High Intensity

Shift Light Grey Yellow

Light Grey White

High Intensity

High Intensity

Characters, Keystrokes, and Colors 7-7

As Text Attributes

Value As Characters

Color/Graphics

Monitor Adapter

Hex Dec Symbol Keystrokes Modes Background Foreground

IBM

Monochrome

Display

Adapter

* * *

* 80 to FF Hex are Flashing In both Color & IBM Monochrome * •• *

80 128

81 129

82 130

83 131

84 132

85 133

86 134

87 135

88 136

89 137

8A 138

8B 139

8C 140

80 141

8E 142

8F 143

90 144

91 145

C Alt 128 Note 6 Black Black Non-Display

U Alt 129 Note 6 Black Blue Underline

e

Alt 130 Note 6 Black Green a

Alt 131 Note 6 Black Cyan

Normal

Normal a

Alt 132 Note 6 Black Red Normal a

Alt 133 Note 6 Black Magenta Normal c; a

Alt 134 Note 6 Black Brown Normal

Alt 135 Note 6 Black Light Grey Normal

€I Alt 136 Note 6 Black e

Alt 137 Note 6 Black

Dark Grey Non-Display

Light Blue High Intensity

Underline

I'

I

., e

Alt 138 Note 6 Black

Alt 139 Note 6 Black

Alt 140 Note 6 Black

Alt 141 Note 6 Black

Light Green High Intensity

Light Cyan High Intensity

Light Red High Intensity

Light

Magenta

High Intensity

A Alt 142 Note 6 Black

A Alt 143 Note 6 Black

E

Alt 144 Note 6 Blue

Ie Alt 145 Note 6 Blue

Yellow

White

Black

Blue

High Intensity

High Intensity

Normal

Underline

92 146 Normal

93 147

Green

Cyan Normal

94 148

95 149

96 150

97 151

A:: Alt 146 Note 6 Blue

Alt 147 Note 6 Blue 0

6 Alt 148 Note 6 Blue

U

Alt 149 Note 6 Blue a

"

Alt 150 Note 6 Blue

Alt 151 Note 6 Blue

Red

Mage.nta

Brown

Normal

Normal

Normal

Light Grey Normal

98 152 Y

6

Alt 152 Note 6 Blue Dark Grey High Intensity

99 153 Alt 153 Note 6 Blue Light Blue High Intensity

Underline

Light Green High Intensity 9A 154

U

Alt 154 Note 6 Blue

7-8 Characters, Keystrokes, and Colors

As Text Attributes

Value As Characters

Color/Graphics

Monitor Adapter

Hex Dec Symbol Keystrokes Modes Background Foreground

9B 155 ¢ Alt 155 Note 6 Blue

IBM

Monochrome

Display

Adapter

Light Cyan High Intensity

£ Light Red High Intensity 9C· 156

9D 157 ¥

Alt 156 Note 6 Blue

Alt 157 Note 6 Blue Light

Magenta

High Intensity

9E 158

9F 159

Pt Alt 158 Note 6 Blue Yellow High Intensity

AO 160

A1 161

A2 162

A3 163

A4 164

A5 165

A6 166

A7 167

A8 168

A9 169

AA 170

AB 171

AC 172

AD 173

AE 174

AF 175

BO 176

B1 177

B2 178

I

Vi f Alt 159 Note 6 Blue White a

Alt 160 Note 6 Green Black

B3 179

B4 180 -

B5 181

~

B6 182

~

«

»

...

I

I f

6

U ii

N

~

2...

<-

-, y,

Alt 161 Note 6 Green

Alt 162 Note 6 Green

Alt 163 Note 6 Green

Alt 164 Note 6 Green

Alt 165 Note 6 Green

Alt 166 Note 6 Green

Alt 167 Note 6 Green

Alt 168 Note 6 Green

Alt 169 Note 6 Green

Alt 170 Note 6 Green

Alt 171 Note 6 Green

Alt 172 Note 6 Green

Alt 173 Note 6 Green

Alt 174 Note 6 Green

Alt 175 Note 6 Green

Alt 176 Note 6 Cyan

Alt 177 Note 6 Cyan

Alt 178 Note 6 Cyan

Alt 179 Note 6 Cyan

Alt 180 Note 6 Cyan

Alt 181 Note 6 Cyan

Alt 182 Note 6 Cyan

Blue

Green

Cyan

Red

Magenta

High Intensity

Normal

Underline

Normal

Normal

Normal

Normal

Brown Normal

Light Grey Normal

Dark Grey High Intensity

Light Blue High Intensity

Underline

Light Green High Intensity

Light Cyan High Intensity

Light Red High Intensity

Light

Magenta

High Intensity

High Intensity Yellow

White High Intensity

Black

Blue

Green

Cyan

Red

Magenta

Brown

Normal

Underline

Normal

Normal

Normal

Normal

Normal

Characters, Keystrokes, and Colors 7-9

As Text Attributes

Value As Characters

Color/Graphics

Monitor Adapter

IBM

Monochrome

Display

Adapter Hex Dec Symbol Keystrokes Modes Background Foreground

B7 183 r-n

Alt 183 Note 6 Cyan Light Grey Normal

B8 184 ~

B9 185

U h

Alt 184 Note 6 Cyan

Alt 185 Note 6 Cyan

Dark Grey High Intensity

Light Blue High Intensity

Underline

BA 186 Alt 186 Note 6 Cyan Light Green High Intensity

BB 187 b

BC 188

Alt 187 Note 6 Cyan

I=:JI

Alt 188 Note 6 Cyan

Light Cyan High Intensity

Light Red High Intensity

BO 189 l-J]

Alt 189 Note 6 Cyan Light High Intensity

Magenta

BE 190

~

Alt 190 Note 6 Cyan Yellow High Intensity

BF 191

CO 192 r---, Alt 191 Note 6 Cyan White High Intensity

--c:=

Alt 192 Note 6 Red Black Normal

C1 193 Alt 193 Note 6 Red Blue Underline

C2 194

C3 195

C4 196

C5 197

Alt 194 Note 6 Red

~

Note 6 Red

Alt 196 Note 6 Red

Alt 197 Note 6 Red

Green

Cyan

Red

Normal

Normal

Normal

Magenta Normal

Normal Brown

Light Grey Normal

C6 198

C7 199

C8 200 f

~

Alt 198 Note 6 Red

Alt 199 Note 6 Red

J;;

Alt 200 Note 6 Red

C9 201

CA 202

I I

~L-

Alt 201 Note 6 Red

Alt 202 Note 6 Red

Dark Grey High Intensity

Light Blue High Intensity

Underline

CB 203 h

CC 204 r -

I!:=

CD 205

Alt 203 Note 6 Red

Alt 204 Note 6 Red

Light Green High Intensity

Light Cyan High Intensity

Light Red High Intensity

Alt 205 Note 6 Red Light

Magenta

High Intensity

CE 206

~S

Alt 206 Note 6 Red

CF 207 Alt 207 Note 6 Red

DO 208 Alt 208 Note 6 Magenta

Yellow

White

Black

High Intensity

High Intensity

Normal

7-10 Characters, Keystrokes, and Colors

As Text Attributes

Color/Graphics

Monitor Adapter

IBM

Characters, Keystrokes, and Colors 7-11

As Text Attributes

Value As Characters

Color/Graphics

Monitor Adapter

Hex Dec Symbol Keystrokes Modes Background Foreground

EC 236

~

Alt 236 Note 6 Brown Light Red

IBM

Monochrome

Display

Adapter

High Intensity

ED 237 cp Alt 237 Note 6 Brown Light

Magenta

High Intensity

EE 238

EF 239

FO 240

F1 241

F2 242

F3 243

F4 244

F5 245

F6 246

€ n

-

±

~

~

J r

Alt 238 Note 6 Brown

Alt 239 Note 6 Brown

Yellow

White

Alt 240 Note 6 Light Grey Black

Alt 241 Note 6 Light Grey Blue

Alt 242 Note 6 Light Grey Green

Alt 243 Note 6 Light Grey Cyan

Alt 244 Note 6 Light Grey Red

Alt 245 Note 6 Light Grey Magenta

Alt 246 Note 6 Light Grey Brown

H ig h Intensity

High Intensity

Reverse Video

Underline

Normal

Normal

Normal

Normal

Normal

F7 247 Alt 247 Note 6 Light Grey Light Grey Normal :::::::

F8 248

F9 249

FA 250

FB 251

Alt 248 Note 6 Light Grey Dark Grey Reverse Video 0

•

Alt 249 Note 6 Light Grey Light Blue High Intensity

Underline

•

Alt 250 Note 6 Light Grey Light Green High Intensity

..r-

Alt 251 Note 6 Light Grey Light Cyan High Intensity n

Alt 252 Note 6 Light Grey Light Red High Intensity FC 252

FD 253

2

Alt 253 Note 6 Light Grey Light

Magenta

FE 254

•

Alt 254 Note 6 Light Grey Yellow

FF 255 BLANK AU 255 Note 6 Light Grey White

High Intensity

High Intensity

High Intensity

."-......,,

7 -12 Characters, Keystrokes, and Colors

Notes

1. Asterisk (*) can be typed using two methods: press the (*) key or, in the shift mode, press the 8 key.

2. Period (.) can be typed using two methods: press the. key or, in the shift or Num Lock mode, press the Del key.

3. Numeric characters 0-9 can be typed using two methods: press the numeric keys on the top row of the keyboard or, in the shift or Num Lock mode, press the numeric keys in the keypad portion of the keyboard.

4. Uppercase alphabetic characters (A-Z) can be typed in two modes: the shift mode or the Caps Lock mode.

5. Lowercase alphabetic characters (a-z) can be typed in two modes: in the normal mode or in Caps Lock and shift mode combined.

.~

6. The three digits after the Alt key must be typed from the numeric keypad. Character codes 1-255 may be entered in this fashion (with Caps Lock activated, character codes

97-122 will display uppercase).

Characters, Keystrokes, and Colors 7-13

Quick Reference

DECIMAL

VALUE

•

HEXA·

DECIMAL

VALUE

0 0

1 1

2 2

3 3

4 4

..

0 16 32 48 64 80 96 112

0 1 2 3 4 5 6 7

BLANK

[NULl)

~ g

......

@)

•

••

BLANK

(SPACE)

#

•

, 0 @ p

1 A

,

P

Q a q t , , II 2 B R b r

3 C S c s

+ ~ $ 4 D T d t

5 5

6 6

7 7

8 8

•

4t

•

§ % 5

,

E U e u

& 6 F V f v

1.7 G W g

W

i

( 8 H X h x

9 9

10 A

0

•

! ) 9 I Y

1

Y

•

--+ *

•

•

J Z J z

11

B

(j

+-

12 C

13 D

Q L

)

+--+-

+

,

-

• , K [ k {

< L

"

1

M ] m

I

I

}

14 E

15

F

~ ...

•

~

..

/ ?

> N /\ n rv

•

0

0 ~

7-14 Characters, Keystrokes, and Colors

DECIMAL

VALUE

•

128 144 160 176 192 208 224 240

•

HElIA­

DECIMAL

VALUE

8 9 A B C D E F

0 0

1 1

2 2

3 3

4

5

6

7

8

9

10

4

5

6

7

8

9

A

11 B

12

13 c

D

14 E

15 F

C u

/ e lE

A

..

, a

A e

••

,

E re

,

H

A

••

1

¢ ~

-

,­

1 a

~ e e

1

A

A

0

..

0

,

0

,

..

..

0

••

U

¥

I

0

(

•

/ a

...

/

1

/

0

/ u

-­ n a

---,

A It «

-

In

;r

£ 14 :::::L

• ---.lJ

g

:::::

:=:=:

III

N

~

~

A J » n f-­

~

-

I

_L r-­

R

I r ­

OC

-

-

II lL

f3 + r

1T -

-

>

<

~ E

J r

F u

J1

T cI> e n

8 ...r n

00 cp

2

E

•

•

~

~ n

BLANK

'FF'

0

I

•

•

Characters, Keystrokes, and Colors 7-1S

Notes:

7-16 Characters, Keystrokes, and Colors

SECTION 8. COMMUNICATIONS

Contents

Hardware ........................................ 8-3

Establishing a Communications Link. .................... 8-5

Communications 8-1

Notes:

8-2 Communications

,~

Hardware

Information-processing equipment used for communication is called data terminal equipment (DTE.) Equipment used to connect the DTE to the communication line is called data communication equipment (DCE.)

An adapter connects the data terminal equipment to the data communication line as shown in the following figure:

Data

Terminal

Equipment

~~---

Data

Communications

Equipment

Communications

Line

~

Voice Line

EIA/CCITT

Adapter

Cable Conforming to EIA or CCITT Standards

The EIA/CCITT adapter allows the data terminal equipment to be connected to the data communications equipment using EIA or

CCITT standardized connections. An external modem is shown in the figure; however, other types of data communications equipment also can be connected to the data terminal equipment using EIA or CCITT standardized connections.

EIA standards are labeled RS-x (recommended standards-x), and

CCITT standards are labeled V.x or X.x, where x is the number of the standard.

The EIA RS-232 interface standard defines the connector type, pin numbers, line names, and signal levels used to connect data terminal equipment to data communications equipment for the purpose of transmitting and receiving data. Since the RS-232 standard was developed, it has been revised three times. The three revised standards are RS-232A, RS-232B, and the presently used RS-232C.

Communications 8-3

The CCITT V.24 interface standard is equivalent to the RS-232C standard; therefore, the descriptions of the EIA standards also apply to the CCITT standards.

The following is an illustration of data terminal equipment connected to an external modem using connections defined by the

RS-232C interface standard:

Data

Terminal

Equipment

Communications

Line

~"",'-----

~~~

Adapter ",,,," Cable Conforming

To RS·232C Standards

"

"

"

'

'" til

EIA/CCITT f - - - - ( ' Line Number

Data

Terminal

Equip­ ment

Protective Ground

Signal Ground

Transmitted Data

Received Data

Request to Send

Clear to Send

Data Set Ready

Data Terminal Ready

Connect Data Set to Line

Telephone Co.

Lead Number

' " r-----'..,

0-

AA/101

0-

AB/1 02

0­

BAl103

0-

BB/104

0-

CAl105

0-

CB/106

®-

CC/107

@-

CD/10S.2

Modem

------@--

**/10S.1

Received Line Signal Detector 8 CF/109

Speed Select - - - - - - - { CH/111

Transmit Signal Element

Timlng~

Receive Signal Element Timing

&

00/115

Select Standby

Ring Indicator

Test

@-**/116

@--

DE/125

~

**/***

I

External Modem Cable Connector

1312111098 7 6 5 4 3 2 1

\ 0 0 0 0 0 0 0 0 0 0 0 0

OJ

\ 0 0 0 0 0 0 0 0 0 0 0 0

252423222120191817161514

L ___ oat~

Terminal . _ _ _

I

Equlpmeht

+

(MOdemIOCE

Data Communications--1

E q U i P m e n t - I

Pin Number

*Not used when business machine clocking is used.

**Not standardized by EIA (Electronics Industry Association).

***Not standardized by CCITT

8-4 Communications

Establishing a Communications Link

The following bar graphs represent normal timing sequences of operation during the establishment of communication for both

Switched Timing Sequence

Data Terminal Ready

Data Set Ready

Request to Send

Clear to Send

Transmitted Data

Nonswitched Timing Sequence

Data Terminal Ready

Data Set Ready

Request to Send

C I ear to Send

Transmitted Data

The following examples show how a link is established on a nonswitched point-to-point line, a nonswitched multipoint line, and a switched point-to-point line.

Communications 8-5

II II

I I

Notes:

8-12 Communications

SECTION 9. IBM PERSONAL

COMPUTER COMPATIBILITY

Contents

Hardware Considerations •...•......•......•.....•... 9-3

System Board ................................. 9-3

Fixed Disk Drive ............................... 9-5

Diskette Drive Compatibility . . . . . . . . . . . . . . . . . . . . .. 9-5

Copy Protection ............................... 9-5

Bypassing BIOS ............................. 9-6

Diskette Drive Controls ....................... 9-6

Write Current Control ........................ 9-6

Application Guidelines .............•................ 9-7

High-Level Language Considerations ............... 9-7

Assembler Language Programming Considerations .. . .. 9-8

Multitasking Provisions ......................... 9-16

Interfaces ................................. 9-16

Classes ................................... 9-17

Time-Outs ................................ 9-19

Machine-Sensitive Code ........................ 9-19

Compatibility 9-1

Notes:

9-2 Compatibility

This section describes the differences among the members of the

IBM Personal Computer family. It also contains information necessary to design hardware and programs that will be compatible with all members of the IBM Personal Computer family.

Hardware Considerations

To design compatible hardware or programs, you must consider hardware differences among the IBM Personal Computers. The following are hardware features of the IBM Personal Computer

AT that are not supported by all of the IBM Personal Computer family.

System Board

.~

The IBM Personal Computer AT system board uses an Intel

80286 Microprocessor. This microprocessor is compatible with the 80287 Math Coprocessor used in the Personal Computer AT, and is generally compatible with the Intel 8088 Microprocessor used in other IBM Personal Computers.

Compatibility 9-3

The following table identifies the microprocessor and describes the I/O channel used with each type of IBM Personal Computer.

System Name

Personal Computer

PCjr

Personal Computer XT

Portable Personal

Computer

Personal Computer AT

System Unit

Microprocessor

8088

8088

8088

8088

I/O Channel Description

5 62-Pin

Not Compatible

8 62-Pin

8 62-Pin

80286 2 62-pin

6 98-Pin (62 Pin + 36 Pin)

System Hardware Identification Chart

The faster processing capability of the 80286, compared to the

8088, creates special programming considerations, which are discussed later in this section under "Application Guidelines."

Some adapters use a 36-pin connector in addition to the 62-pin connector. Adapters designed to use the 36-pin connectors are not compatible with all members of the IBM Personal Computer family. Refer to the "System to Adapter Compatibility Chart" in the Technical Reference Options and Adapters manual, Volume 1, to identify the adapters supported by each system. The IBM

Personal Computer AT does not support an expansion unit.

On the IIO channel:

• The system clock signal should be used only for synchronization and not for applications requiring a fixed frequency.

• The 14.31818-MHz oscillator is not synchronous with the system clock.

• The ALE signal is activated during DMA cycles.

• The -lOW signal is not active during refresh cycles.

• Pin B04 supports IRQ 9. r"'­

9-4 Compatibility

Fixed Disk Drive

Reading from and writing to this drive is initiated in the same way as with other IBM Personal Computers; however, the Fixed Disk and Diskette Drive Adapter may be addressed from different

Diskette Drive Compatibility

The following chart shows the read, write, and format capabilities for each of the diskette drives used by IBM Personal Computers.

Diskette

Drive Name

160/18oK 320/360K

Mode Mode 1.2M Mode

5-1/4 In. Diskette Drive:

Type 1

Type 2

Type 3

Slim1ine Diskette Drive

Double Sided Diskette

Drive

High Capacity Diskette

Drive

R W F

R W F

R W F

R W F

R W F

R W*

---

R W F

R W F

R W F

R W F

R W*

--­

--­

--­

--­

--­

R W F

R-Read W-Wr i te F-Format W*-I fad i skette is formatted in either 160/18oK mode or 320/360K mode and written on by a

High Capacity Drive, that diskette may be read by only a

High Capacity Drive.

Diskette Drive Compatibility Chart

Note: Diskettes designed for the 1.2M mode may not be used in either a 160/180K or a 320/360K diskette drive.

Copy Protection

The following methods of copy protection may not work on systems using the High Capacity Diskette Drive:

• Bypassing BIOS

Compatibility 9-5

• Diskette drive controls

• Write current control

Bypassing BIOS

Copy protection that tries to bypass the following BIOS routines will not work on the High Capacity Diskette Drive:

Track Density:

The High Capacity Diskette Drive records tracks at a density of 96 TPI (tracks per inch). This drive has to double-step in the 48 TPI mode, which is performed by BIOS.

Data Transfer Rate:

BIOS selects the proper data transfer rate for the media being used.

Disk Base:

Copy protection, which creates its own disk base will not work on the High Capacity Diskette Drive. ­

Diskette Drive Controls

Copy protection that uses the following will not work on the High

Capacity Diskette Drive:

Rotational Speed:

The time between two events on a diskette is controlled by the Fixed Disk and Diskette Drive Adapter.

Access Time:

Diskette BIOS routines must set the track-to-track access time for the different types of media used on the ffiM

Personal Computer AT.

Head Geometry:

See "Diskette Drive Compatibility" on page

9-5

Diskette Change Signal:

Copy protection may not be able to reset this signal.

9-6 Compatibility

Write Current Control

Copy protection that uses write current control will not work because the Fixed Disk and Diskette Drive Adapter selects the proper write current for the media being used.

Applica tion Guidelines

The following information should be used to develop application programs for the IBM Personal Computer family.

High-Level Language Considerations

The IBM-supported languages of BASIC, FORTRAN, COBOL,

Pascal, and APL are the best choices for writing compatible programs.

If a program uses specific features of the hardware, that program may not be compatible with all IBM Personal Computers.

Specifically, the use of assembler language subroutines or hardware-specific commands (In, Out, Peek, Poke, ... ) must follow the assembler language rules (see "Assembler Language

Programming Considerations" on page 9-8 ).

Any program that requires precise timing information should obtain it through a DOS or language interface; for example,

TIME$ in BASIC. If greater precision is required, the assembler techniques in "Assembler Language Programming

Considerations" are available. The use of programming loops may prevent a program from being compatible with other IBM

Personal Computers.

Compatibility 9-7

Assembler Language Programming

Considerations

The following OP codes work differently on systems using the

80286 microprocessor than they do on systems using the 8088 microprocessor.

• If the system microprocessor executes a POPF instruction in either the real or the virtual address mode with CPL:5IOPL, then a pending maskable interrupt (the INTR pin active) may be improperly recognized after executing the POPF instruction even if maskable interrupts were disabled before the POPF instruction and the value popped had IF=O. If the interrupt is improperly recognized, the interrupt is still correctly executed. This errata has no effect when interrupts are enabled in either real or virtual address mode. This errata has no effect in the virtual address mode when CPL>IOPL.

The POPF instruction may be simulated with the following code macro:

POPFF Macro

EB 01

CF

JMP $+3

IRET

OE PUSH CS

E8 FB FF CALL $-2 use POPFF instead of POPF simulate popping flags using IRET jump around IRET

POP CS, IP, flags

CALL within segment program will continue here

• PUSHSP

80286 microprocessor pushes the current stack pointer.

8088 microprocessor pushes the new stack pointer.

• Single step interrupt (when TF= 1) on the interrupt instruction (OP code hex CC,CD):

80286 microprocessor does not interrupt on the INT instruction.

9-8 Compatibility

8088 microprocessor does interrupt on the INT instruction.

• The divide error exception (interrupt 0):

80286 microprocessor pushes the eS:IP of the instruction, causing the exception.

8088 microprocessor pushes the eS:IP following the instruction, causing the exception.

• Shift counts are masked to five bits. Shift counts greater than 31 are treated mod 32. For example, a shift count of

36, shifts the operand four places.

The following describes anomalies which may occur in systems which contain 80286 processors with 1983 and 1984 date codes

(S40172, S54036, S40093, S54012).

In protected mode, the contents of the ex register may be unexpectedly altered under the following conditions:

Note: The value in parenthesis indicates the type of error code pushed onto the exception handler's stack.

Exception #NPO = Exception #11 = Not-present Fault

Exception #SSO

=

Exception #12

=

Stack Fault

Exception #GPO = Exception #13 = General Protection Fault

• Exception #GP(O) from attempted access to data segment or extra segment when the corresponding segment register holds a null selector.

• Exception #GP(O) from attempted data read from code segment when code segment has the "execute only" attribute. r""\

• Exception #GP(O) from attempted write to code segment

(code segments are not writable in protected mode), or to data segment of extra segment if the data or extra segment has the read only attribute.

Compatibility 9-9

• Exception #GP(O) from attempted load of a selector referencing the local descriptor table into CS, DS, ES or SS, when the LDT is not present.

• Exception #GP(O) from attempted input or output instruction when CPL

>

IOPL.

• Exception #GP(selector) from attempted access to a descriptor is GDT, LDT, or IDT, beyond the defined limit of the descriptor table.

• Exception #GP(O) from attempted read or write (except for

"PUSH" onto stack) beyond the defined limit of segment.

• Exception #SS(O) from attempted "PUSH" below the defined limit of the stack segment.

Restarting applications which generate the above exceptions may result in errors.

In the protected mode, when any of the null selector values

(OOOOH, 0001H, 0002H, 0003H) are loaded into the DS or ES registers via a MOV or POP instruction or a task switch, the

80286 always loads the null selector OOOOH into the corresponding register.

If a coprocessor (80287) operand is read from an "executable and readable" and conforming (ERC) code segment, and the coprocessor operand is sufficiently near the segment's limit that the second or subsequent byte lies outside the limit, no protection exception #9 will be generated.

The following correctly describes the operation of all 80286 parts:

• Instructions longer than 10 bytes (instructions using mUltiple redundant prefixes) generate exception #13 (General

Purpose Exception) in both the real and protected modes.

• If the second operand of an ARPL instruction is a null selector, the instruction generates an exception #13.

Assembler language programs should perform all 110 operations through ROM BIOS or DOS function calls. r " ,

9-10 Compatibility

•

Program interrupts are used for access to these functions.

This practice removes the absolute addressing from the program. Only the interrupt number is required. r-.\

•

The coprocessor detects six different exception conditions that can occur during instruction execution. If the appropriate exception mask within the coprocessor is not set, the coprocessor sets its error signal. This error signal generates a hardware interrupt (interrupt 13) and causes the

, busy' signal to the coprocessor to be held in the busy state.

The 'busy' signal may be cleared by an 8-bit I/O Write command to address hex FO with DO through D7 equal to O.

.~

The power-on-self-test code in the system ROM enables hardware IRQ 13 and sets up its vector to point to a routine in ROM. The ROM routine clears the 'busy' signal latch and then transfers control to the address pointed to by the

NMI interrupt vector. This allows code written for any IBM

Personal Computer to work on an IBM Personal Computer

AT. The NMI interrupt handler should read the coprocessor's status to determine if the NMI was caused by the coprocessor. If the interrupt was not generated by the coprocessor, control should be passed to the original NMI interrupt handler.

• Back to back I/O commands to the same I/O ports will not permit enough recovery time for I/O chips. To ensure enough time, a JMP SHORT $+2 must be inserted between

IN/OUT instructions to the same I/O chip.

Note: MOV AL,AH type instruction does not allow enough recovery time. An example of the correct procedure follows:

OUT IO_ADD,AL

JMP SHORT $+2

MOV AL,AH

OUT IO_ADD,AL

~

•

In systems using the 80286 microprocessor, IRQ 9 is redirected to INT hex OA (hardware IRQ 2). This insures

Compatibility 9-11

that hardware designed to use IRQ 2 will operate in the IBM

Personal Computer AT.

• The system can mask hardware sensitivity. New devices can change the ROM BIOS to accept the same programming interface on the new device.

• In cases where BIOS provides parameter tables, such as for video or diskette, a program may substitute new parameter values by building a new copy of the table and changing the vector to point to that table. However, the program should copy the current table, using the current vector, and then modify those locations in the table that need to be changed.

In this way, the program will not inadvertently change any values that should be left the same.

• Disk Base consists of 11 parameters required for diskette operation. They are pointed at by the data variable,

Disk Pointer, at absolute address 0:78. It is strongly recommended that the values supplied in ROM be used. If it becomes necessary to modify any of the parameters, build another parameter block and modify the address in

Disk_Pointer to point to the new block.

The parameters were established to operate both the High

Capacity Diskette Drive and the Double Sided Diskette

Drive. Three of the parameters in this table are under control of BIOS in the following situations.

The Gap Length Parameter is no longer retrieved from the parameter block.

The gap length used during diskette read, write, and verify operations is derived from within diskette BIOS.

The gap length for format operations is still obtained from the parameter block.

Special considerations are required for fomlatting operations.

See the prolog of Diskette BIOS for the required details. If a parameter block contains a head settle time parameter value of 0 milliseconds, and a write operation is being performed, at least 15 milliseconds of head settle time will be enforced r--...

9-12 Compatibility

for a High Capacity Diskette Drive and 20 milliseconds will be enforced for a Double Sided Diskette Drive. If a parameter block contains a motor start wait parameter of less than 1 second for a write or format operation of 625 milliseconds for a read or verify operation, Diskette BIOS will enforce those times listed above.

• The following procedure is used to determine the type of media inserted in the High Capacity Diskette Drive:

1. Read Track 0, Head 0, Sector 1 to allow diskette BIOS to establish the media/drive combination. If this is successful, continue with the next step.

2. Read Track 0, Sector 15. If an error occurs, a double sided diskette is in the drive.

Note: Refer to the DOS Technical Reference manual for the File Allocation Table (FAT) parameters for single- and double-sided diskettes.

If a successful read occurs, a high capacity diskette is in the drive.

3.

If Step 1 fails, issue the reset function (AH=O) to diskette BIOS and retry. If a successful read cannot be done, the media needs to be formatted or is defective.

ROM BIOS and DOS do not provide for all functions. The following are the allowable I/O operations with which IBM will maintain compatibility in future systems.

• Control of the sound, using port hex 61, and the sound channel of the timer/counter. A program can control timer/counter channels 0 and 2, ports hex 40,42, and 43. A program must not change the value in port hex 41, because this port controls the dynamic-memory refresh. Channel 0 provides the time-of-day interrupt, and can also be used for timing short intervals. Channel 2 of the timer/counter is the output for the speaker and cassette ports. This channel may also be used for timing short intervals, although it cannot interrupt at the end of the period.

Compatibility 9-13

• Control of the Game Control Adapter, port hex 201

Note: Programs should use the timer for delay on the paddle input rather than a program loop.

• Interrupt Mask Register (IMR), port hex 21, can be used to selectively mask and unmask the hardware features.

The following information pertains to absolute memory locations.

• Interrupt Vectors Segment (hex O)--A program may change these to point at different processing routines. When an interrupt vector is modified, the original value should be retained. If the interrupt, either hardware or program, is not directed toward this device handler, the request should be passed to the next item in the list.

• Video Display Buffers (hex BOOOO and B8000)-- For each mode of operation defined in the video display BIOS, the memory map will remain the same. For example, the bit map for the 320 x 200 medium-resolution graphics mode of the

Color/Graphics Monitor adapter will be retained on any future adapter that supports that mode. If the bit map is modified, a different mode number will be used.

/""",,

~.

• ROM BIOS Data Area (hex 40:0)--Any variables in this area will retain their current definition, whenever it is reasonable to do so. IBM may use these data areas for other purposes when the variable no longer has meaning in the system. In general, ROM BIOS data variables should be read or modified through BIOS calls whenever possible, and not with direct access to the variable.

A program that requires timing information should use either the time-of-day clock or the timing channels of the timer/counter.

The input frequency to the timer will be maintained at 1.19 MHz, providing a constant time reference. Program loops should be avoided.

Programs that use copy protection schemes should use the ROM

BIOS diskette calls to read and verify the diskette and should not be timer dependent. Any method can be used to create the diskette, although manufacturing capability should be considered. r--..

9-14 Compatibility

The verifying program can look at the diskette controller's status bytes in the ROM BIOS data area for additional information about embedded errors. More information about copy protection may be found on page 9-5 under "Copy Protection".

Any DOS program must be relocatable and insensitive to the size

~. of DOS or its own load addresses. A program's memory requirement should be identified and contiguous with the load module. A program should not assume that all of memory is available to it.

There are several 80286 instructions that, when executed, lock out external bus signals. DMA requests are not honored during the execution of these instructions. Consecutive instructions of this type prevent DMA activity from the start of the first instruction to the end of the last instruction. To allow for necessary DMA cycles, as required by the diskette controller in a multitasking system, multiple lock-out instructions must be seperated by JMP SHORT $+2.

Compatibility 9-15

Multitasking Provisions

The mM Personal Computer AT BIOS contains a feature to assist multitasking implementation. "Hooks" are provided for a multitasking dispatcher. Whenever a busy (wait) loop occurs in the BIOS, a hook is provided for the program to break out of the loop. Also, whenever BIOS services an interrupt, a corresponding wait loop is exited, and another hook is provided. Thus a program may be written that employs the bulk of the device driver code.

The following is valid only in the microprocessor's real address mode and must be taken by the code to allow this support.

,~

The program is responsible for the serialization of access to the device driver. The BIOS code is not reentrant.

The program is responsible for matching corresponding wait and post calls.

Interfaces

There are four interfaces to be used by the multitasking dispatcher:

Startup

First, the startup code hooks interrupt hex 15. The dispatcher is responsible to check for function codes of AH= hex 90 or 91.

The "Wait" and "Post" sections describe these codes. The dispatcher must pass all other functions to the previous user of interrupt hex 15. This can be done by a IMP or a CALL. If the function code is hex 90 or 91, the dispatcher should do the appropriate processing and return by the IRET instruction.

Serialization

It is up to the multitasking system to ensure that the device driver code is used serially. Multiple entries into the code can result in serious errors. r".,

9-16 Compatibility

Wait (Busy)

Whenever the BIOS is about to enter a busy loop, it first issues an interrupt hex 15 with a function code of hex 90 in AH. This signals a wait condition. At this point, the dispatcher should save the task status and dispatch another task. This allows overlapped execution of tasks when the hardware is busy. The following is an outline of the code that has been added to the BIOS to perform this function.

MOV AX, 90XXH

INT ISH

JC TIMEOUT wait code in AH and type code in AL issue call optional: for time-out or if carry is set, time-out occurred

NORMAL TIMEOUT LOGIC normal time-out

Post (Interrupt)

Whenever the BIOS has set an interrupt flag for a corresponding busy loop, an interrupt 15 occurs with a function code of hex 91 in AH. This signals a post condition. At this point, the dispatcher should set the task status to "ready to run" and return to the interrupt routine. The following is an outline of the code added to BIOS that performs this function.

MOV AX, 9IXXH

INT ISH post code AH and type code AL issue call

Classes

• The class for hex 0 to 7F is serially reusable. This means that for the devices that use these codes, access to the BIOS must be restricted to only one task at a time.

Compatibility 9-17

• The class for hex 80 to BF is reentrant. There is no restriction on the number of tasks that may access the device.

• The class for hex CO to FF is non-interrupt. There is no corresponding interrupt for the wait loop. Therefore, it is the responsibility of the dispatcher to determine what satisfies this condition to exit the loop. r ' \

Function Code Classes

Type Code (AL)

00H->7FH

80H->OBFH

OCOH->OFH

Description

Serially reusable devices; operating system must serialize access

Reentrant devices; ES:BX is used to distinguish different calls (multiple 1/0 calls are allowed simultaneously)

Wait only calls; there is no complementary

POST for these waits--these are time-out only. Times are function-number dependent.

Function Code Assignments

The following are specific assignments for the IBM Personal

Computer AT BIOS. Times are approximate. They are grouped according to the classes described under "Function Code

Classes".

Type Code (AL)

OOH

Time-out yes (6 second)

Description fixed disk

OlH

02H

OFDH yes (2 second) no diskette keyboard yes (1 second-write) diskette motor start

~,

9-18 Compatibility

(625 ms-read) yes (18 second) OFEH printer

The asynchronous support has been omitted. The Serial/Parallel

Adapter will generate interrupts, but BIOS does not support it in the interrupt mode. Therefore, the support should be included in the multitasking system code if that device is to be supported.

Time-Outs

To support time-outs properly, the multitasking dispatcher must be aware of time. If a device enters a busy loop, it generally should remain there for a specific amount of time before indicating an error. The dispatcher should return to the BIOS wait loop with the carry bit set if a time-out occurrs.

Machine-Sensitive Code

for specific machine type. Location of the specific machine identification codes can be found through interrupt 15 function code AH (See

I

Configuration Parameters

I in BIOS Listing). The code is two bytes. The first byte shows the machine type and the second byte shows the series type. They are as follows:

First Second

Byte Byte

FF

FE

FE

FD

FC

00

00

00

00

00

Machine Identification

IBM Personal Computer

IBM Personal Computer XT

IBM Portable Personal Computer

IBM PCJr

IBM Personal Computer AT

Machine Identification Code

~

IBM will define methods for uniquely determining the specific machine type or I/O feature for any new device.

Compatibility 9-19

Notes:

9-20 Compatability

Glossary

This glossary includes definitions developed by the American

National Standards Institute (ANSI) and the International

Organization for Standardization (ISO). This material is reproduced from the American National Dictionary for Information

Processing, copyright 1977 by the Computer and Business

Equipment Manufacturers Association, copies of which may be purchased from the American National Standards Institute, 1430

Broadway, New York, New York 10018.

JL. Prefix micro; 0.000001.

JLS. Microsecond; 0.000001 second.

A. Ampere. ac. Alternating current. accumulator. A register in which the result of an operation is formed. active high. Designates a signal that has to go high to produce an effect. Synonymous with positive true. active low. Designates a signal that has to go low to produce an effect. Synonymous with negative true. of another system.

Glossary-l

address bus. One or more conductors used to carry the binary-coded address from the processor throughout the rest of the system. algorithm. A finite set of well-defined rules for the solution of a problem in a finite number of steps. ail points addressable (APA). A mode in which all points of a displayable image can be controlled by the user. alphameric. Synonym for alphanumeric. alphanumeric (A/N). Pertaining to a character set that contains letters, digits, and usually other characters, such as punctuation marks. Synonymous with alphameric. alternating current (ac). direction of flow.

A current that periodically reverses its r"­

American National Standard Code for Information Interchange

(ASCII). The standard code, using a coded character set consisting of 7-bit coded characters (8 bits including parity check), used for information exchange between data processing systems, data communication systems, and associated equipment.

The ASCII set consists of control characters and graphic characters. r"­ ampere (A). The basic unit of electric current.

A/N. Alphanumeric analog. (1) Pertaining to data in the form of continuously variable physical quantities. (2) Contrast with digital.

AND. A logic operator having the property that if P is a statement, Q is a statement, R is a statement, ... , then the AND of

P, Q, R, .. .is true if all statements are true, false if any statement is false.

Glossary-2

AND gate. A logic gate in which the output is 1 only if all inputs are 1.

AND operation. The boolean operation whose result has the boolean value 1, if and only if, each operand has the boolean

APA. All points addressable.

ASCII. American National Standard Code for Information

Interchange. assemble. To translate a program expressed in an assembler language into a computer language. assembler. A computer program used to assemble. assembler language. A computer-oriented language whose instructions are usually in one-to-one correspondence with computer instructions .

.

~ (1) Transmission in which the time of occurrence of the start of each character, or block of characters, is arbitrary; once started, the time of occurrence of each signal representing a bit within a character, or block, has the same relationship to significant instants of a fixed time frame.

(2) Transmission in which each information character is individually transmitted (usually timed by the use of start elements and stop elements). audio frequencies. Frequencies that can be heard by the human ear (approximately 15 hertz to 20,000 hertz). auxiliary storage. (1) A storage device that is not main storage.

(2) Data storage other than main storage; for example, storage on magnetic disk. (3) Contrast with main storage.

~

Beginner's all-purpose symbolic instruction code.

Glossary-3

basic input/output system (BIOS). The feature of the IBM

Personal Computer that provides the level control of the major

II

0 devices, and relieves the programmer from concern about hardware device characteristics. baud. (1) A unit of signaling speed equal to the number of discrete conditions or signal events per second. For example, one baud equals one bit per second in a train of binary signals, one-half dot cycle per second in Morse code, and one 3-bit value per second in a train of signals each of which can assume one of eight different states. (2) In asynchronous transmission, the unit of modulation rate corresponding to one unit of interval per second; that is, if the duration of the unit interval is 20 milliseconds, the modulation rate is 50 baud.

~

BCC. Block-check character. beginner's aU-purpose symbolic instruction code

(BASIC). A programming language with a small repertoire of commands and a simple syntax, primarily designed for numeric applications. binary. (1) Pertaining to a selection, choice, or condition that has two possible values or states. (2) Pertaining to a fixed radix numeration system having a radix of 2. binary digit. (1) In binary notation, either of the characters 0 or 1. (2) Synonymous with bit. binary notation. Any notation that uses two different characters, usually the binary digits 0 and 1. binary synchronous communications (BSC). A uniform procedure, using a standardized set of control characters and control character sequences for synchronous transmission of binary-coded data between stations.

~,

BIOS. Basic input/output system.

Glossary-4

bit. Synonym for binary digit bits per second (bps). A unit of measurement representing the number of discrete binary digits transmitted by a device in one second.

"..-...., block. ( 1) A string of records, a string of words, or a character string formed for technical or logic reasons to be treated as an entity. (2) A set of things, such as words, characters, or digits, treated as a unit. block-check character (BCC). In cyclic redundancy checking, a character that is transmitted by the sender after each message block and is compared with a block-check character computed by the receiver to determine if the transmission was successful. boolean operation. (1) Any operation in w1tich each of the operands and the result take one of two valu~. (2) An operation that follows the rules of boolean algebra. bootstrap. A technique or device designed to bring itself into a desired state by means of its own action; for example, a machine routine whose first few instructions are sufficient to bring the rest of itself into the computer from an input device. bps. Bits per second.

BSC. Binary synchronous communications. buffer. (1) An area of storage that is temporarily reserved for use in performing an input I output operation, into which data is read or from which data is written. Synonymous with 110 area.

(2) A portion of storage for temporarily holding input or output data. bus. One or more conductors used for transmitting signals or power. byte. (1) A sequence of eight adjacent binary digits that are operated upon as a unit. (2) A binary character operated upon as a unit. (3) The representation of a character ..

Glossary-S

C. Celsius. capacitor. An electronic circuit component that stores an electric charge.

CAS. Column address strobe. cathode ray tube (CRT). A vacuum tube in which a stream of electrons is projected onto a fluorescent screen producing a luminous spot. The location of the spot can be controlled. cathode ray tube display (CRT display). (1) A CRT used for displaying data. For example, the electron beam can be controlled to form alphanumeric data by use of a dot matrix.

(2) Synonymous with monitor.

CCIIT. International Telegraph and Telephone Consultative

Committee.

Celsius (C). A temperature scale. Contrast with Fahrenheit (F). central processing unit (CPU). Term for processing unit. channel. A path along which signals can be sent; for example, data channel, output channel. character generator. (1) In computer graphics, a functional unit that converts the coded representation of a graphic character into the shape of the character for display. (2) In word processing, the means within equipment for generating visual characters or symbols from coded data. character set. (1) A finite set of different characters upon which agreement has been reached and that is considered complete for some purpose. (2) A set of unique representations called characters. (3) A defined collection of characters.

~

Glossary-6

characters per second (cps). A standard unit of measurement for the speed at which a printer prints. check key. A group of characters, derived from and appended to a data item, that can be used to detect errors in the data item during processing. clipping. In computer graphics, removing parts of a display image that lie outside a window. closed circuit. A continuous unbroken circuit; that is, one in which current can flow. Contrast with open circuit.

CMOS. Complementary metal oxide semiconductor. code. (1) A set of unambiguous rules specifying the manner in which data may be represented in a discrete form. Synonymous with coding scheme. (2) A set of items, such as abbreviations, representing the members of another set. (3) To represent data or a computer program in a symbolic form that can be accepted

"..-....., by a data processor. (4) Loosely, one or more computer programs, or part of a computer program. coding scheme. Synonym for code. collector. An element in a transistor toward which current flows. color cone. An arrangement of the visible colors on the surface of a double-ended cone where lightness varies along the axis of the cone, and hue varies around the circumference. Lightness includes both the intensity and saturation of color. column address strobe (CAS). A signal that latches the column addresses in a memory chip. compile. (1) To translate a computer program expressed in a

r--..

problem-oriented language into a computer-oriented language.

(2) To prepare a machine-language program from a computer program written in another programming language by making use of the overall logic structure of the program, or generating more

Glossary-7

than one computer instruction for each symbolic statement, or both, as well as performing the function of an assembler. complement. A number that can be derived from a specified number by subtracting it from a second specified number. complementary metal oxide semiconductor (CMOS). A logic circuit family that uses very little power. It works with a wide range of power supply voltages. computer. A functional unit that can perform substantial computation, including numerous arithmetic operations or logic operations, without human intervention during a run. computer instruction code. A code used to represent the instructions in an instruction set. Synonymous with machine code. computer program. A sequence of instructions suitable for processing by a computer. computer word. A word stored in one computer location and capable of being treated as a unit. configuration. ( 1) The arrangement of a computer system or network as defined by the nature, number, and the chief characteristics of its functional units. More specifically, the term configuration may refer to a hardware configuration or a software configuration. (2) The devices and programs that make up a system, subsystem, or network. r ' \ conjunction. Synonym for AND operation. contiguous. Touching or joining at the edge or boundary; adjacent. control character. A character whose occurrence in a particular context initiates, modifies, or stops a control operation. control operation. An action that affects the recording, processing, transmission, or interpretation of data; for example, starting or stopping a process, carriage return, font change, rewind, and end of transmission. r ' \

Glossary-8

control storage. A portion of storage that contains microcode. coordinate space. In computer graphics, a system of Cartesian coordinates in which an object is defined. cps. Characters per second. cpu. Central processing unit.

CRC. Cyclic redundancy check.

CRT. Cathode ray tube.

CRT display. Cathode ray tube display.

CTS. Clear to send. Associated with modem control. cursor. (1) In computer graphics, a movable marker that is used to indicate position on a display. (2) A displayed symbol that acts as a marker to help the user locate a point in text, in a system command, or in storage. (3) A movable spot of light on the screen of a display device, usually indicating where the next character is to be entered, replaced, or deleted. cyclic redundancy check (CRC). (1) A redundancy check in which the check key is generated by a cyclic algorithm. (2) A system of error checking performed at both the sending and receiving station after a block-check character has been accumulated. cylinder. (1) The set of all tracks with the same nominal distance from the axis about which the disk rotates. (2) The tracks of a disk storage device that can be accessed without repositioning the access mechanism. daisy-chained cable. A type of cable that has two or more

/""", connectors attached in series. data. (1) A representation of facts, concepts, or instructions in a formalized manner suitable for communication, interpretation, or

Glossary-9

processing by human or automatic means. (2) Any representations, such as characters or analog quantities, to which meaning is, or might be assigned. data base. A collection of data that can be immediately accessed and operated upon by a data processing system for a specific purpose. data processing system. A system that performs input, processing, storage, output, and control functions to accomplish a sequence of operations on data. data transmission. Synonym for transmission. dB. Decibel. dBa. Adjusted decibels. dc. Direct current. debounce. (1) An electronic means of overcoming the make/break bounce of switches to obtain one smooth change of signal level. (2) The elimination of undesired signal variations caused by mechanically generated signals from contacts. r--.. decibel. (1) A unit that expresses the ratio of two power levels on a logarithmic scale. (2) A unit for measuring relative power. decoupling capacitor. A capacitor that provides a low impedance path to ground to prevent common coupling between circuits.

Deutsche Industrie Norm (DIN). (1) German Industrial Norm.

(2) The committee that sets German dimension standards. digit. (1) A graphic character that represents an integer; for example, one of the characters 0 to 9. (2) A symbol that represents one of the non-negative integers smaller than the radix.

For example, in decimal notation, a digit is one of the characters 0 to

9.

Glossary-to

digital. (1) Pertaining to data in the form of digits. (2) Contrast with analog.

DIN. Deutsche Industrie Noml. r"'\ DIN connector. One of the connectors specified by the DIN committee.

DIP. Dual in-line package.

DIP switch. One of a set of small switches mounted in a dual in-line package. direct current (de). A current that always flows in one direction. direct memory access (DMA). A method of transferring data between main storage and I/O devices that does not require processor intervention. disable. To stop the operation of a circuit or device. disabled. Pertaining to a state of a processing unit that prevents the occurrence of certain types of interruptions. Synonymous with masked. disk. Loosely, a magnetic disk. diskette. A thin, flexible magnetic disk and a semirigid protective jacket, in which the disk is permanently enclosed.

Synonymous with flexible disk. diskette drive. A device for storing data on and retrieving data from a diskette. display. (1) A visual presentation of data. (2) A device for visual presentation of information on any temporary character imaging device. (3) To present data visually. (4) See cathode ray

1"", tube display.

Glossary-tt

display attribute. In computer graphics, a particular property that is assigned to all or part of a display; for example, low intensity, green color, blinking status. display element. In computer graphics, a basic graphic element that can be used to construct a display image; for example, a dot, a line segment, a character. display group. In computer graphics, a collection of display elements that can be manipulated as a unit and that can be further combined to form larger groups. display image. In computer graphics, a collection of display elements or display groups that are represented together at any one time in a display space. display space. In computer graphics, that portion of a display surface available for a display image. The display space may be all or part of a display surface. display surface. In computer graphics, that medium on which display images may appear; for example, the entire screen of a cathode ray tube.

DMA. Direct memory access. dot matrix. (1) In computer graphics, a two-dimensional pattern of dots used for constructing a display image. This type of matrix can be used to represent characters by dots. (2) In word processing, a pattern of dots used to form characters. This term normally refers to a small section of a set of addressable points; for example, a representation of characters by dots. dot printer. Synonym for matrix printer. dot-matrix character generator. In computer graphics, a character generator that generates character images composed of dots. drawing primitive. A group of commands that draw defined geometric shapes.

~

Glossary-12

DSR. Data set ready. Associated with modem control.

DTR. In the IBM Personal Computer, data terminal ready.

Associated with modem controL dual in-line package (DIP). A widely used container for an integrated circuit. DIPs have pins in two parallel rows. The pins are spaced 1/ 10 inch apart. See also DIP switch. duplex. (1) In data communication, pertaining to a simultaneous two-way independent transmission in both directions. (2)

Contrast with half-duplex. duty cycle. In the operation of a device, the ratio of on time to idle time. Duty cycle is expressed as a decimal or percentage. dynamic memory. RAM using transistors and capacitors as the memory elements. This memory requires a refresh (recharge) cycle every few milliseconds. Contrast with static memory.

",........., EBCDIC. Extended binary-coded decimal interchange code.

ECC. Error checking and correction. edge connector. A terminal block with a number of contacts attached to the edge of a printed-circuit board to facilitate plugging into a foundation circuit.

EIA. Electronic Industries Association. electromagnet. Any device that exhibits magnetism only while an electric current flows through it. enable. To initiate the operation of a circuit or device. end of block (EOB). A code that marks the end of a block of data.

Glossary-13

end of file (EOF). An intemallabel, immediately following the last record of a file, signaling the end of that file. It may include control totals for comparison with counts accumulated during processing. end-of-text (ETX). A transmission control character used to terminate text. end-of-transmission (EOT). A transmission control character used to indicate the conclusion of a transmission, which may have included one or more texts and any associated message headings. end-of-transmission-block (ETB). A transmission control character used to indicate the end of a transmission block of data when data is divided into such blocks for transmission purposes.

EOB. End of block.

EOF. End of file.

EOT. End-of -transmission.

EPROM. Erasable programmable read-only memory. erasable programmable read-only memory (EPROM). A PROM in which the user can erase old information and enter new information. error checking and correction (ECC). The detection and correction of all single-bit errors, plus the detection of double-bit and some multiple-bit errors.

ESC. The escape character. escape character (ESC). A code extension character used, in some cases, with one or more succeeding characters to indicate by

~ some convention or agreement that the coded representations following the character or the group of characters are to be

Glossary-14

interpreted according to a different code or according to a different coded character set.

ETB. End-of -transmission-block. r-", ETX. End-of-text. extended binary-coded decimal interchange code

(EBCDIC). A set of 256 characters, each represented by eight bits.

F. Fahrenheit.

Fahrenheit (F). A temperature scale. Contrast with Celsius (C). falling edge. Synonym for negative-going edge.

~. FCC. Federal Communications Commission. fetch. To locate and load a quantity of data from storage.

FF. The form feed character. field. (1) In a record, a specified area used for a particular category of data. (2) In a data base, the smallest unit of data that can be referred to. field-programmable logic sequencer (FPLS). An integrated circuit containing a programmable, read-only memory that responds to external inputs and feedback of its own outputs.

FIFO (first-in-first out). A queuing technique in which the next item to be retrieved is the item that has been in the queue for the longest time.

Glossary-l S

fixed disk drive. In the IBM Personal Computer, a unit consisting of nonremovable magnetic disks, and a device for storing data on and retrieving data from the disks. flag. (1) Any of various types of indicators used for identification. (2) A character that signals the occurrence of some condition, such as the end of a word. (3) Deprecated term for mark. flexible disk. Synonym for diskette. flip-flop. A circuit or device containing active elements, capable of assuming either one of two stable states at a given time. font. A family or assortment of characters of a given size and style; for example, 10 point Press Roman medium. foreground. (1) In mUltiprogramming, the environment in which high-priority programs are executed. (2) On a color display screen, the characters as opposed to the background. form feed. (1) Paper movement used to bring an assigned part of a form to the printing position. (2) In word processing, a function that advances the typing position to the same character position on a predetermined line of the next form or page. form feed character. A control character that causes the print or display position to move to the next predetermined first line on the next form, the next page, or the equivalent. format. The arrangement or layout of data on a data medium.

FPLS. Field-programmable logic sequencer. frame. (1) In SDLC, the vehicle for every command, every response, and all information that is transmitted using SDLC procedures. Each frame begins and ends with a flag. (2) In data transmission, the sequence of contiguous bits bracketed by and including beginning and ending flag sequences.

~

Glossary-16

g. Gram.

G. (1) Prefix giga; 1,000,000,000. (2) When referring to computer storage capacity, 1,073,741,824. (1,073,741,824

=

2 to the 30th power.) gate. (1) A combinational logic circuit having one output channel and one or more input channels, such that the output channel state is completely determined by the input channel states. (2) A signal that enables the passage of other signals through a circuit.

Gb. 1,073,741,824 bytes. general-purpose register. A register, usually explicitly addressable within a set of registers, that can be used for different purposes; for example, as an accumulator, as an index register, or as a special handler of data. giga (G). Prefix 1,000,000,000. gram (g). A unit of weight (equivalent to 0.035 ounces). graphic. A symbol produced by a process such as handwriting, drawing, or printing. graphic character. A character, other than a control character, that is normally represented by a graphic. half-duplex. (1) In data communication, pertaining to an alternate, one way at a time, independent transmission. (2)

Contrast with duplex. hardware. (1) Physical equipment used in data processing, as documentation. (2) Contrast with software.

Glossary-17

head. A device that reads, writes, or erases data on a storage medium; for example, a small electromagnet used to read, write, or erase data on a magnetic disk. hertz (Hz). A unit of frequency equal to one cycle per second. hex. Common abbreviation for hexadecimal. hexadecimal. (1) Pertaining to a selection, choice, or condition that has 16 possible different values or states. These values or states are usually symbolized by the ten digits 0 through 9 and the six letters A through F. (2) Pertaining to a fixed radix numeration system having a radix of 16. high impedance state. A state in which the output of a device is effectively isolated from the circuit. highlighting. In computer graphics, emphasizing a given display group by changing its attributes relative to other display groups in the same display field. high-order position. The leftmost position in a string of characters. See also most-significant digit. hither plane. In computer graphics, a plane that is perpendicular to the line joining the viewing reference point and the view point and that lies between these two points. Any part of an object between the hither plane and the view point is not seen. See also yon plane. housekeeping. Operations or routines that do not contribute directly to the solution of the problem but do contribute directly to the operation of the computer.

Hz. Hertz image. A fully processed unit of operational data that is ready to be transmitted to a remote unit; when loaded into control storage ~ in the remote unit, the image determines the operations of the unit.

Glossary-18

immediate instruction. An instruction that contains within itself an operand for the operation specified, rather than an address of the operand. index register. A register whose contents may be used to modify an operand address during the execution of computer instructions. indicator. (1) A device that may be set into a prescribed state, usually according to the result of a previous process or on the occurrence of a specified condition in the equipment, and that usually gives a visual or other indication of the existence of the prescribed state, and that may in some cases be used to determine the selection among alternative processes; for example, an overflow indicator. (2) An item of data that may be interrogated to determine whether a particular condition has been satisfied in the execution of a computer program; for example, a switch indicator, an overflow indicator. inhibited. (1) Pertaining to a state of a processing unit in which certain types of interruptions are not allowed to occur. (2)

Pertaining to the state in which a transmission control unit or an audio response unit cannot accept incoming calls on a line. initialize. To set counters, switches, addresses, or contents of storage to 0 or other starting values at the beginning of, or at prescribed points in, the operation of a computer routine. input/output (I/O). (1) Pertaining to a device or to a channel that may be involved in an input process, and, at a different time, in an output process. In the English language, "input/output" may be used in place of such terms as "input/output data,"

"input/output signal," and "input/output terminals," when such usage is clear in a given context. (2) Pertaining to a device whose parts can be performing an input process and an output process at the same time. (3) Pertaining to either input or output, or both. instruction. In a programming language, a meaningful expression that specifies one operation and identifies its operands, if any. r--, instruction set. The set of instructions of a computer, of a programming language, or of the programming languages in a programming system.

Glossary-19

intensity. In computer graphics, the amount of light emitted at a display point interface. A device that alters or converts actual electrical signals between distinct devices, programs, or systems. interleave. To arrange parts of one sequence of things or events/'""".., so that they alternate with parts of one or more other sequences of the same nature and so that each sequence retains its identity. interrupt. (1) A suspension of a process, such as the execution of a computer program, caused by an event external to that process, and performed in such a way that the process can be resumed. (2) In a data transmission, to take an action at a receiving station that causes the transmitting station to terminate a transmission. (3) Synonymous with interruption.

I/O. Input/output.

I/O area. Synonym for buffer. irrecoverable error. An error that makes recovery impossible without the use of recovery techniques external to the computer program or run. joystick. In computer graphics, a lever that can pivot in all directions and that is used as a locator device. k. Prefix kilo; 1000.

K. When referring to storage capacity, 1024. (1024 = 2 to the

10th power.)

Kb. 1024 bytes. key lock. A device that deactivates the keyboard and locks the cover on for security.

Glossary-20

kg. Kilogram; 1000 grams. kHz. Kilohertz; 1000 hertz. kilo (k). Prefix 1000 kilogram (kg). 1000 grams. kilohertz (kHz). 1000 hertz latch. (1) A simple logic-circuit storage element. (2) A feedback loop in sequential digital circuits used to maintain a state. least-significant digit. The rightmost digit. See also low-order position.

LED. Light-emitting diode.

~ light-emitting diode (LED). A semiconductor device that gives off visible or infrared light when activated. load. In programming, to enter data into storage or working registers. look-up table (LUT). (1) A technique for mapping one set of values into a larger set of values. (2) In computer graphics, a table that assigns a color value (red, green, blue intensities) to a color index. low power Schottky TIL. A version (LS series) of TTL giving a good compromise between low power and high speed. See also transistor-transistor logic and Schottky TTL. low-order position. The rightmost position in a string of characters. See also least-significant digit. luminance. The luminous intensity per unit projected area of a given surface viewed from a given direction.

Glossary-21

LUT. Look-up table. m. (1) Prefix milli; 0.001. (2) Meter.

M. (1) Prefix mega; 1,000,000. (2) When referring to computer storage capacity, 1,048,576. (1,048,576 = 2 to the

20th power.) rnA. Milliampere; 0.001 ampere. machine code. The machine language used for entering text and program instructions onto the recording medium or into storage and which is subsequently used for processing and printout. machine language. (1) A language that is used directly by a machine. (2) Deprecated term for computer instruction code. magnetic disk. (1) A flat circular plate with a magnetizable surface layer on which data can be stored by magnetic recording.

(2) See also diskette. main storage. (1) Program-addressable storage from which instructions and other data can be loaded directly into registers for subsequent execution or processing. (2) Contrast with auxiliary storage. mark. A symbol or symbols that indicate the beginning or the end of a field, of a word, of an item of data, or of a set of data such as a file, a record, or a block. mask. (1) A pattern of characters that is used to control the retention or elimination of portions of another pattern of characters. (2) To use a pattern of characters to control the retention or elimination of portions of another pattern of characters. masked. Synonym for disabled. matrix. (1) A rectangular array of elements, arranged in rows and columns, that may be manipulated according to the rules of

~,

Glossary-22

matrix algebra. (2) In computers, a logic network in the form of an array of input leads and output leads with logic elements connected at some of their intersections. matrix printer. A printer in which each character is represented by a pattern of dots; for example, a stylus printer, a wire printer.

Synonymous with dot printer.

Mh. 1,048,576 bytes. mega (M). Prefix 1,000,000. megahertz (MHz). 1,000,000 hertz. memory. Ternl for main storage. meter (m). A unit of length (equivalent to 39.37 inches).

MFM. Modified frequency modulation.

MHz. Megahertz; 1,000,000 hertz. micro (JL). Prefix 0.000,001. microcode. (1) One or more microinstructions. (2) A code, representing the instructions of an instruction set, implemented in a part of storage that is not program-addressable. microinstruction. (1) An instruction of microcode. (2) A basic or elementary machine instruction. microprocessor. An integrated circuit that accepts coded instructions for execution; the instructions may be entered, integrated, or stored internally. microsecond (JLs). 0.000,001 second. milli (m). Prefix 0.001.

Glossary-23

milliampere (rnA). 0.001 ampere. millisecond (ms). 0.001 second. mnemonic. A symbol chosen to assist the human memory; for example, an abbreviation such as "mpy" for "multiply." mode. (1) A method of operation; for example, the binary mode, the interpretive mode, the alphanumeric mode. (2) The most frequent value in the statistical sense. modeling transformation. Operations on the coordinates of an object (usually matrix multiplications) that cause the object to be rotated about any axis, translated (moved without rotating), and/or scaled (changed in size along any or all dimensions). See also viewing transformation. modem (modulator-demodulator). A device that converts serial

(bit by bit) digital signals from a business machine (or data communication equipment) to analog signals that are suitable for transmission in a telephone network. The inverse function is also performed by the modem on reception of analog signals. modified frequency modulation (MFM). The process of varying the amplitude and frequency of the 'write' signal. MFM pertains to the number of bytes of storage that can be stored on the recording media. The number of bytes is twice the number contained in the same unit area of recording media at single density. modulation. The process by which some characteristic of one wave (usually high frequency) is varied in accordance with another wave or signal (usually low frequency). This technique is used in modems to make business-machine signals compatible with communication facilities. modulation rate. The reciprocal of the measure of the shortest nominal time interval between successive significant instants of the modulated signal. If this measure is expressed in seconds, the modulation rate is expressed in baud. module. (1) A program unit that is discrete and identifiable with respect to compiling, combining with other units, and loading.

Glossary-24

(2) A packaged functional hardware unit designed for use with other components. modulo check. A calculation performed on values entered into a system. This calculation is designed to detect errors. modulo-N check. A check in which an operand is divided by a number N (the modulus) to generate a remainder (check digit) that is retained with the operand. For example, in a modulo-7 check, the remainder will be 0, 1,2,3,4,5, or 6. The operand is later checked by again dividing it by the modulus; if the remainder is not equal to the check digit, an error is indicated. modulus. In a moduloN check, the number by which the operand is divided. monitor. Synonym for cathode ray tube display (CRT display). most-significant digit. The leftmost (non-zero) digit. See also high-order position. ms. Millisecond; 0.001 second. multiplexer. A device capable of interleaving the events of two or more activities, or capable of distributing the events of an interleaved sequence to the respective activities. multiprogramming. (1) Pertaining to the concurrent execution of two or more computer programs by a computer. (2) A mode of operation that provides for the interleaved execution of two or more computer programs by a single processor. n. Prefix nano; 0.000,000,001.

NAND. A logic operator having the property that if P is a statement, Q is a statement, R is a statement, ... , then the NAND of P, Q ,R, ... is true if at least one statement is false, false if all statements are true.

NAND gate. A gate in which the output is 0 only if all inputs are 1.

Glossary-2S

nano (n). Prefix 0.000,000,001. nanosecond (ns). 0.000,000,001 second. negative true. Synonym for active low. negative-going edge. The edge of a pulse or signal changing in a negative direction. Synonymous with falling edge. non-retum-to-zero change-on-ones recording (NRZI). A transmission encoding method in which the data terminal equipment changes the signal to the opposite state to send a binary 1 and leaves it in the same state to send a binary O. non-return-to-zero (inverted) recording (NRZI). Deprecated term for non-retum-to-zero change-on-ones recording.

NOR. A logic operator having the property that if P is a statement, Q is a statement, R is a statement, ... , then the NOR of

P, Q, R, ... is true if all statements are false, false if at least one statement is true.

NOR gate. A gate in which the output is 0 only if at least one input is 1.

NOT. A logical operator having the property that if P is a statement, then the NOT of P is true if P is false, false if P is true.

NRZI. Non-retum-to-zero change-on-ones recording. ns. Nanosecond; 0.000,000,001 second.

NUL. The null character.

null character (NUL). A control character that is used to accomplish media-fill or time-fill, and that may be inserted into or

~ removed from, a sequence of characters without affecting the meaning of the sequence; however, the control of the equipment or the format may be affected by this character.

Glossary-26

odd-even check. Synonym for parity check. offline. Pertaining to the operation of a functional unit without the continual control of a computer. one-shot. A circuit that delivers one output pulse of desired duration for each input (trigger) pulse. open circuit. (1) A discontinuous circuit; that is, one that is broken at one or more points and, consequently, cannot conduct current. Contrast with closed circuit. (2) Pertaining to a no-load condition; for example, the open-circuit voltage of a power supply. open collector. A switching transistor without an internal connection between its collector and the voltage supply. A connection from the collector to the voltage supply is made through an external (pull-up) resistor. operand. (1) An entity to which an operation is applied.

(2) That which is operated upon. An operand is usually identified by an address part of an instruction. operating system. Software that controls the execution of programs; an operating system may provide services such as resource allocation, scheduling, input/output control, and data management.

OR. A logic operator having the property that if P is a statement, Q is a statement, R is a statement, ... , then the OR of P,

Q, R,...is true if at least one statement is true, false if all statements are false.

OR gate. A gate in which the output is 1 only if at least one input is 1. output. Pertaining to a device, process, or channel involved in an output process, or to the data or states involved in an output process.

Glossary-27

output process. (1) The process that consists of the delivery of data from a data processing system, or from any part of it.

(2) The return of information from a data processing system to an end user, including the translation of data from a machine language to a language that the end user can understand. overcurrent. A current of higher than specified strength. overflow indicator. (1) An indicator that signifies when the last line on a page has been printed or passed. (2) An indicator that is set on if the result of an arithmetic operation exceeds the capacity of the accumulator. overrun. Loss of data because a receiving device is unable to accept data at the rate it is transmitted. overvoltage. A voltage of higher than specified value. parallel. (1) Pertaining to the concurrent or simultaneous operation of two or more devices, or to the concurrent performance of two or more activities. (2) Pertaining to the concurrent or simultaneous occurrence of two or more related activities in multiple devices or channels. (3) Pertaining to the simultaneity of two or more processes. (4) Pertaining to the simultaneous processing of the individual parts of a whole, such as the bits of a character and the characters of a word, using separate facilities for the various parts. (5) Contrast with serial. r---.. parameter. (1) A variable that is given a constant value for a specified application and that may denote the application. (2) A name in a procedure that is used to refer to an argument passed to that procedure. parity bit. A binary digit appended to a group of binary digits to make the sum of all the digits either always odd (odd parity) or always even (even parity). parity check. (1) A redundancy check that uses a parity bit.

(2) Synonymous with odd-even check.

PEL. Picture element.

Glossary-28

personal computer. A small home or business computer that has a processor and keyboard and that can be connected to a television or some other monitor. An optional printer is usually available. phototransistor. A transistor whose switching action is controlled by light shining on it. picture element (PEL). The smallest displayable unit on a display. polling. (1) Interrogation of devices for purposes such as to avoid contention, to determine operational status, or to deternline readiness to send or receive data. (2) The process whereby stations are invited, one at a time, to transmit. port. An access point for data entry or exit. positive true. Synonym for active high. positive-going edge. The edge of a pulse or signal changing in a positive direction. Synonymous with rising edge. potentiometer. A variable resistor with three terminals, one at each end and one on a slider (wiper). power supply. A device that produces the power needed to operate electronic equipment. printed circuit. A pattern of conductors (corresponding to the wiring of an electronic circuit) formed on a board of insulating material. printed-circuit board. A usually copper-clad plastic board used to make a printed circuit. priority. A rank assigned to a task that determines its precedence in receiving system resources. processing program. A program that performs such functions as compiling, assembling, or translating for a particular programming language.

Glossary-29

processing unit. A functional unit that consists of one or more processors and all or part of internal storage. processor. (1) In a computer, a functional unit that interprets and executes instructions. (2) A functional unit, a part of another unit such as a terminal or a processing unit, that interprets and executes instructions. (3) Deprecated term for processing program. (4) See microprocessor. program. (1) A series of actions designed to achieve a certain result. (2) A series of instructions telling the computer how to handle a problem or task. (3) To design, write, and test computer programs. programmable read-only memory (PROM). A read-only memory that can be programmed by the user. programming language. (1) An artificial language established for expressing computer programs. (2) A set of characters and rules with meanings assigned prior to their use, for writing computer programs. programming system. One or more programming languages and the necessary software for using these languages with particular automatic data-processing equipment. r-..

PROM. Programmable read-only memory. propagation delay. (1) The time necessary for a signal to travel from one point on a circuit to another. (2) The time delay between a signal change at an input and the corresponding change at an output. protocol. (1) A specification for the format and relative timing of information exchanged between communicating parties.

(2) The set of rules governing the operation of functional units of a communication system that must be followed if communication is to be achieved.

~

Glossary-30

pulse. A variation in the value of a quantity, short in relation to the time schedule of interest, the final value being the same as the initial value. radio frequency (RF). An ac frequency that is higher than the highest audio frequency. So called because of the application to radio communication. radix. ( 1) In a radix numeration system, the positive integer by which the weight of the digit place is multiplied to obtain the weight of the digit place with the next higher weight; for example, in the decimal numeration system the radix of each digit place is

10. (2) Another term for base. radix numeration system. A positional representation system in which the ratio of the weight of anyone digit place to the weight of the digit place with the next lower weight is a positive integer

(the radix). The permissible values of the character in any digit place range from 0 to one less than the radix.

1'--""""

RAM. Random access memory. Read/write memory. random access memory (RAM). Read/write memory.

RAS. In the mM Personal Computer, row address strobe. raster. In computer graphics, a predetermined pattern of lines that provides uniform coverage of a display space. read. To acquire or interpret data from a storage device, from a data medium, or from another source. read-only memory (ROM). A storage device whose contents cannot be modified. The memory is retained when power is r---.. removed. read/write memory. A storage device whose contents can be modified. Also called RAM.

Glossary-31

recoverable error. An error condition that allows continued execution of a program. red-green-blue-intensity (RGBI). The description of a direct-drive color monitor that accepts input signals of red, green, blue, and intensity. redundancy check. A check that depends on extra characters attached to data for the detection of errors. See cyclic redundancy check. register. (1) A storage device, having a specified storage capacity such as a bit, a byte, or a computer word, and usually intended for a special purpose. (2) A storage device in which specific data is stored. retry. To resend the current block of data (from the last EOB or

ETB) a prescribed number of times, or until it is entered correctly or accepted. reverse video. A form of highlighting a character, field, or cursor by reversing the color of the character, field, or cursor with its background; for example, changing a red character on a black background to a black character on a red background.

~,

RF. Radio frequency.

RF modulator. The device used to convert the composite video signal to the antenna level input of a home TV.

RGBI. Red-green-blue-intensity. rising edge. Synonym for positive-going edge.

ROM. Read-only memory.

ROM/BIOS. The ROM resident basic input/output system, which provides the level control of the major I/O devices in the computer system.

Glossary-32

row address strobe (RAS). A signal that latches the row address in a memory chip.

RS-232C. A standard by the EIA for communication between computers and external equipment.

RTS. Request to send. Associated with modem control. rIDl.

A single continuous perfornlance of a computer program or routine. saturation. In computer graphics, the purity of a particular hue.

A color is said to be saturated when at least one primary color

(red, blue, or green) is completely absent. scaling. In computer graphics, enlarging or reducing all or part of a display image by multiplying the coordinates of the image by a constant value .

.

~ schematic. The representation, usually in a drawing or diagram form, of a logical or physical structure.

Schottky TTL. A version (S series) of TTL with faster switching speed, but requiring more power. See also transistor-transistor logic and low power Schottky TTL.

SDLC. Synchronous Data Link Control. sector. That part of a track or band on a magnetic drum, a magnetic disk, or a disk pack that can be accessed by the magnetic heads in the course of a predetermined rotational displacement of the particular device.

~. SERDES. Serializer / deserializer.

Glossary-33

serial. (1) Pertaining to the sequential performance of two or more activities in a single device. In English, the modifiers serial and parallel usually refer to devices, as opposed to sequential and consecutive; which refer to processes. (2) Pertaining to the sequential or consecutive occurrence of two or more related activities in a single device or channel. (3) Pertaining to the sequential processing of the individual parts of a whole, such as the bits of a character or the characters of a word, using the same facilities for successive parts. (4) Contrast with parallel. serializer/deserializer (SERDES). A device that serializes output from, and de serializes input to, a business machine. setup. (1) In a computer that consists of an assembly of individual computing units, the arrangement of interconnections between the units, and the adjustments needed for the computer to operate. (2) The preparation of a computing system to perform a job or job step. Setup is usually performed by an operator and often involves performing routine functions, such as mounting tape reels. (3) The preparation of the system for normal operation. short circuit. A low-resistance path through which current flows, ~ rather than through a component or circuit. signal. A variation of a physical quantity, used to convey data. sink. A device or circuit into which current drains. software. (1) Computer programs, procedures, and rules concerned with the operation of a data processing system.

(2) Contrast with hardware. source. The origin of a signal or electrical energy. square wave. An alternating or pulsating current or voltage whose wave shape is square. square wave generator. A signal generator delivering an output signal having a square waveform. ,~

SS. Start-stop.

Glossary-34

start bit. (1) A signal to a receiving mechanism to get ready to receive data or perform a function. (2) In a start-stop system, a signal preceding a character or block that prepares the receiving device for the reception of the code elements. start-of-text (8TX). A transmission control character that precedes a text and may be used to terminate the message heading. start-stop system. A data transmission system in which each character is preceded by a start bit and is followed by a stop bit. start-stop (88) transmission. (1) Asynchronous transmission such that a group of signals representing a character is preceded by a start bit and followed by a stop bit. (2) Asynchronous transmission in which a group of bits is preceded by a start bit that prepares the receiving mechanism for the reception and registration of a character and is followed by at least one stop bit that enables the receiving mechanism to come to an idle condition pending the reception of the next character. static memory. RAM using flip-flops as the memory elements.

~ Data is retained as long as power is applied to the flip-flops.

Contrast with dynamic memory. stop bit. (1) A signal to a receiving mechanism to wait for the next signal. (2) In a start-stop system, a signal following a character or block that prepares the receiving device for the reception of a subsequent character or block. storage. (1) A storage device. (2) A device, or part of a device, that can retain data. (3) The retention of data in a storage device.

(4) The placement of data into a storage device. strobe. An instrument that emits adjustable-rate flashes of light.

Used to measure the speed of rotating or vibrating objects.

8TX. Start-of-text.

Glossary-35

symbol. (1) A conventional representation of a concept.

(2) A representation of something by reason of relationship, association, or convention. synchronization. The process of adjusting the corresponding significant instants of two signals to obtain the desired phase relationship between these instants.

Synchronous Data Link Control (SDLC). A protocol for management of data transfer over a data link. synchronous transmission. (1) Data transmission in which the time of occurrence of each signal representing a bit is related to a fixed time frame. (2) Data transmission in which the sending and receiving devices are operating continuously at substantially the same frequency and are maintained, by means of correction, in a desired phase relationship. syntax. (1) The relationship among characters or groups of characters, independent of their meanings or the manner of their interpretation and use. (2) The structure of expressions in a language. (3) The rules governing the structure of a language.

(4) The relationships among symbols.

~ text. In ASCII and data communication, a sequence of characters treated as an entity if preceded and terminated by one

STX and one ETX transmission control character, respectively. time-out. (1) A parameter related to an enforced event designed to occur at the conclusion of a predetermined elapsed time.

A time-out condition can be cancelled by the receipt of an appropriate time-out cancellation signal. (2) A time interval allotted for certain operations to occur; for example, response to polling or addressing before system operation is interrupted and must be restarted. track. (1) The path or one of the set of paths, parallel to the reference edge on a data medium, associated with a single reading or writing component as the data medium moves past the

Glossary-36

component. (2) The portion of a moving data medium such as a drum, or disk, that is accessible to a given reading head position. transistor-transistor logic (TTL). A popular logic circuit family that uses multiple-emitter transistors. transmission. (1) The sending of data from one place for reception elsewhere. (2) In ASCII and data communication, a series of characters including headings and text. (3) The dispatching of a signal, message, or other form of intelligence by wire, radio, telephone, or other means. (4) One or more blocks or messages. For BSC and start-stop devices, a transmission is terminated by an EOT character. (5) Synonymous with data transmission.

TTL. Transistor-transistor logic.

I~ typematic key. A keyboard key that repeats its function when held pressed. v.

Volt. vector. In computer graphics, a directed line segment. video. Computer data or graphics displayed on a cathode ray tube, monitor, or display. view point. In computer graphics, the origin from which angles and scales are used to map virtual space into display space. viewing reference point. In computer graphics, a point in the modeling coordinate space that is a defined distance from the view point. viewing transformation. Operations on the coordinates of an object (usually matrix multiplications) that cause the view of the object to be rotated about any axis, translated (moved without

Glossary-37

rotating), and/or scaled (changed in size along any or all dimensions). Viewing transformation differs from modeling transformation in that perspective is considered. See also modeling transformation. viewplane. The visible plane of a CRT display screen that completely contains a defined window. viewport. In computer graphics, a predefined part of the CRT display space. volt. The basic practical unit of electric pressure. The potential that causes electrons to flow through a circuit. w.

Watt. watt. The practical unit of electric power. window. (1) A predefined part of the virtual space. (2) The visible area of a viewplane. word. (1) A character string or a bit string considered as an entity. (2) See computer word. write. To make a permanent or transient recording of data in a storage device or on a data medium. write precompensation. The varying of the timing of the head current from the outer tracks to the inner tracks of the diskette to keep a constant 'write' signal. yon plane. In computer graphics, a plane that is perpendicular to the line joining the viewing reference point and the view point, and that lies beyond the viewing reference point. Any part of an object beyond the yon plane is not seen. See also hither plane.

Glossary-38

Bibliography

~

•

Microprocessor and Peripheral Handbook

INTEL Corporation.21 0844. 001

•

Introduction to the iAPX 286

INTEL Corporation.21

0308.001

•

iAPX 286 Operating Systems Writer's Guide

INTEL Corporation.121960.001

• iAPX 286 Programmer's Reference Manual

INTEL Corporation.21 0498. 001

~

•

iAPX 286 Hardware Reference Manual

INTEL Corporation.21 0760.001

•

Numeric Processor Extension Data Sheet

INTEL Corporation.210920

• 80287 Support Library Reference Manual

INTEL Corporation. 12 212 9

•

National Semiconductor Corporation. NS16450

~

• Motorola Microprocessor's Data Manual

Motorola Inc. Series B

Bihliograpby-l

Notes:

Bibllography-2

Index

A B

AAA 6-8

AAD 6-9

AAM 6-9

AAS 6-8 access time, track-to-track 9-6

ADC 6-6

ADD 6-6 additional ROM modules 5-13 address generation, DMA 1-9 address latch enable 1-35 address latch enable, buffered 1-32 address mode real 1-4 address space, I/O 1-24 address, segment 1-4 addresses, CMOS RAM 1-56 addresses, page register 1-10

AEN 1-35

ALE 9-4 alternate key 5-20

AND 6-10

APL 9-7 application guidelines 9-7 arithmetic instructions 6-6,

6-25

ARPL 6-19

ASCII characters 7-3

ASCII, extended 5-14

BALE 1-32 bandwidth 1-7

BASIC 9-7 basic assurance test 4-5

BASIC interrupts 5-6

BAT 4-5 battery connector 1-72

BHE 1-9

BIOS quick reference 5-24

BIOS fixed disk parameters 1-63

BIOS memory map 5-10

BIOS programming hints 5-10 block diagram keyboard interface 1-49 system xiv system board 1-6 system timer 1-22 board, system 1-3

BOUND 6-16 break code 4-4,4-11 break key 5-21 buffer, keyboard 4-3 buffered address latch enable 1-32 buffers, video display 9-14 bus controller 1-32 bus cycle 1-7 busy loop 9-17 bypassing BIOS 9-6 byte high enable 1-9

Index-l

c

CALL 6-13 capacitor, variable 1-41 caps lock key 5-20

CBW 6-9 channel, I/O 1-24 connectors 1-25 pin assignments 1-28 signals 1-31 channels, PMA 1-7, 1-9 character codes 5-14 characters 7-3 classes, wait loop 9-17

CLC 6-17

CLD 6-17

CLEX 6-27

CLI 6-17

CLK 1-31 clock real-time 1-56, 1-57 clock and data signals clock cycle 1-7 clock line, keyboard 1-54,

4-5,4-12,4-13 clock, system 1-7

CMC 6-17

CMOS RAM 1-56

CMOS RAM addresses 1-56

CMOSRAM configuration 1-59

CMOS RAM I/O operations 1-68

CMP 6-7

CMPS 6-11

COBOL 9-7 code device driver 9-16 machine identification 9-19 machine-sensitive 9-19 codes character 5-14 extended 5-18 multitasking function 9-18 color burst signal 1-41 command codes, DMA controller 1-11 commands

I/O 9-11 keyboard 4-9 keyboard controller 1-51 keyboard system 4-5 commands from the system commands to the system comparison instructions 6-23 compatibility, hardware 9-3 condition, wait 9-17 configuration record 1-56 configuration, CMOS

RAM 1-59 connectors battery 1-72

I/O channel 1-25

J-1 through J-16 1-26 keyboard 1-73, 4-3 power LED and key lock 1-72 power supply 1-71 power supply output 3-7 speaker 1-72 system board 1-71 constants instructions 6-24 control game 9-14 sound 9-13 control key 5-20 control transfer instructions 6-13 controller, keyboard 1-42 controllers bus 1-32

DMA 1-7,1-9, 1-10

Index-2

coprocessor controls 1-39 coprocessor programming 2-3 coprocessor, math 2-3 copy protection 9-5,9-14

Ctrl state 5-18

CTS 6-18

CWD 6-9 cycle

D interrupt 1-12 refresh 1-7 bus 1-7 clock 1-7 microprocessor 1-7

DACK 0-3 and 5-7 1-35

DAS 6-8 data area, ROM BIOS 9-14 data communication equipment 8-3 data input, keyboard 4-13 data line, keyboard 1-54, 4-5,

4-12,4-13 data output, keyboard 4-13 data stream 4-12 data terminal equipment 8-3 data transfer instructions 6-3,

6-22 data transfer rate, diskette 9-6

DEC 6-7,6-8 decodes, memory 1-11, 1-31

DECSTP 6-28 default segment workspace 5-9

~ description descriptors 1-5 device driver code 9-16 diagnostic checkpoint port 1-39 direct memory access 1-9 disk pointer 9-12 disk base 9-6, 9-12 diskette change signal 9-6 diskette data transfer rate 9-6 diskette rotational speed 9-6 diskette track density 9-6 diskette write current 9-7

DIV 6-9 divide error exception 9-9

DMA address generation 1-9

DMA channels 1-7, 1-9

DMA controller 1-7

DMA controller command codes 1-11

DMA controller 1 1-9

DMA controller 2 1-10

DMA controllers

DOS 9-7

E

1-9

DOS function calls 9-10

DOS interrupts 5-6

DRQO-DRQ3 1-34

DRQ5-DRQ7 1-34

EIA/CCITT 8-3 enable NMI 1-38 encoding, keyboard 5-13

ENTER 6-16

ESC 6-18 exception, divide error 9-9 extended ASCII 5-14 extended codes 5-18

Index-3

F

FABS 6-26

FADD 6-25

FCHS 6-26

FCOM 6-23

FCOMP 6-23

FCOMPP 6-24

FDIV 6-25

FIFO 4-3

FLD 6-22

FLDLG2 6-24

FLDLN2 6-24

FLDL2T 6-24

FLDPI 6-24

FLDZ 6-24

FLDI 6-24

FMUL 6-25

FORTRAN 9-7

FPREM 6-26

FREE 6-28

French keyboard 4-16

FRNDINT 6-26

FSCALE 6-26

FSQRT 6-25

FST 6-22

FSTP 6-22

FSUB 6-25

FTST 6-24 function calls, DOS 9-10 function codes, multitasking 9-18

FXAM 6-24

FXCH 6-23

FXTRACT 6-26

G game control 9-14 gap length parameter 9-12 generator,refresh request 1-22

German keyboard 4-17 graphics modes 5-8 guidelines, application 9-7

H

hard code 5-10 hardware compatibility 9-3 hardware interrupts 5-6

HLT 6-17 hooks 9-16

I

I/O address map 1-37

I/O address space 1-24

I/O CH CK 1-32,1-40

I/O CH RDY 1-33

1/ 0 channel 1-24 connectors 1-25 pin assignments 1-28 signals 1-31

I/O channel check 1-32

I/O channel connectors 1-28

I/O channel ready 1-33

I/O chip select 1-36

1/ 0 commands 9-11

I/O CS16 1-36

I/O ports, keyboard controller 1-54

Index-4

I/O read 1-33

I/O write 1-33

IDIV 6-9

IIMUL 6-9

IMR 9-14

IMUL 6-8

IN 6-5

INC 6-6

INCSTP 6-28 inhibit keyboard 1-48 input buffer, keyboard controller 1-51 input port, keyboard controller 1-54 input requirements 3-3 inputs, power supply

INS 6-12

3-3 instructions arithmetic comparison constants

6-6, 6-25

6-23

6-24 control transfer data transfer

6-13

6-3, 6-22 logic 6-9 processor control protection control rotate 6-9

6-17

6-18 shift 6-9 string manipulation 6-11

INT 6-16,6-27 interface, keyboard 4-3 interfaces, multitasking interrupt controller

9-16

1-12 interrupt mask register interrupt service routine interrupt sharing 1-14

9-14

1-33 interrupt vectors 9-14 interrupt, single step 9-8 interrupts

BASIC 5-6

DOS 5-6 hardware program

5-6

5-3 program interrupt listing

(real mode) sharing 1-14

5-5 system 1-12 interrupts, program (real mode) 5-5

INTO 6-16 lOR 1-33 lOW 1-33 lRET 6-16

IRQ 2 9-11

IRQ 9 9-4,9-11

IRQ3-IRQI5 1-33

Italian keyboard 4-18

J

JB/JNAE 6-14

JBE/JNA 6-14

JCXZ 6-16

JE/JZ 6-14

JL/JNGE 6-14

JLE/JNG 6-14

JMP 6-13

JNB/JAE 6-15

JNBE/JA 6-15

JNE/JNZ 6-15

JNL/JGE 6-15

JNLE/JG 6-15

JNO 6-15

JNP/JPO 6-15

JNS 6-15

JO 6-14 joystick support

JP/JPE 6-14

JS 6-14 jumper, RAM

5-6

1-40

Index-5

K key lock 4-3 key scan codes 4-11 keyboard buffer 4-3 clock line 1-54,4-5,4-12,

4-13 commands 4-9 connector 1-73,4-3 controller 1-42 controller commands 1-51 controller I/O ports 1-54 controller input buffer 1-51 controller input port 1-54 controller output buffer 1-51 controller output port 1-54 controller status register 1-49 controller test inputs 1-54 data input 4-13 data line 1-54,4-5,4-12,

4-13 data output 4-13 encoding 5-13 inhibit switch 1-48 interface 4-3 interface block diagram 1-49 layout 1-44,5-15 outputs 4-11 routine 5-23 specifications 4-22 system commands 4-5 keyboard layouts keyboard scan-code outputs keyboard, French 4-16 keyboard, German 4-17 keyboard, Italian 4-18 keyboard, Spanish 4-19 keyboard, UK. English 4-20 keyboard, U.S. English 4-21 keys 4-4 alternate 5-20 break 5-21 caps lock 5-20 combinations 5-21 control 5-20 number lock 5-21 pause 5-22 print screen 5-22 scroll lock 5-20 shift 5-19 system request 5-6,5-22 keys, typematic 4-4

L

LAHF 6-5

LAR 6-19 layout system board 1-74 layout, keyboard 1-44,5-15

LAI7-LA23 1-31

LDCW 6-27

LDENV 6-27

LDS 6-5

LEA 6-5

LEAVE 6-16

LED 4-5

LES 6-5

LGDT 6-18

LIDT 6-18 light emitting diodes 4-5 line contention 4-13 line, multipoint 8-5 line, point-to-point 8-5

LLDT 6-18

LMSW 6-19

Index-6

load current 3-4

LOCK 6-17

LODS 6-11 logic diagrams logic instructions 6-9

,,-....., LOOP 6-15 loop, busy 9-17

LOOPNZ/LOOPNE 6-16 loops, program 9-14

LOOPZ/LOOPE 6-15

LSL 6-19

LTR 6-18

MOVS 6-11

MUL 6-8 multi-tasking function codes 9-18 interfaces 9-16 provisions 9-16 serialization 9-16 startup 9-16 multipoint line 8-5

N

M

machine identification code 9-19 machine-sensitive code 9-19 make code 4-4,4-11

~ mask on and off 1-39 master 1-35 math coprocessor 2-3, 9-11 math coprocessor controls 1-39

MEM chip select 1-36

MEM CS16 1-36 memory 1-4 memory decodes 1-11, 1-31 memory locations, reserved 5-9 memory map, BIOS 5-10

MEMR 1-34

MEMW 1-34 microprocessor 1-4, 1-7 microprocessor cycle 1-7 modes, graphic 5-8

~ modules, RAM 1-24 modules,

ROM/EPROM 1-23

MOV 6-3

NEG 6-8 network, nonswitched 8-5 network, switched 8-5

NMI 1-12, 1-38 no load protection 3-5 non-maskable interrupt 1-38 nonswitched network 8-5

NOP 6-26, 6-28

NOT 6-11

Num Lock state 5-18 number lock key 5-21 o operations, CMOS RAM

I/O 1-68

OR 6-10

OSC 1-36, 1-41 oscillator 1-36

OUT 6-5 output buffer, keyboard controller 1-51 output port, keyboard controller 1-54 output protection 3-4

Index-7

output voltage sense levels 3-6 output voltage sequencing 3-4 outputs, keyboard 4-11 outputs, power supply 3-4

OUTS 6-12 p page register addresses 1-10 parameter gap length 9-12 passing 5-4 tables 9-12 parameters, BIOS fixed disk 1-63

Pascal 9-7

PATAN 6-26 pause key 5-22 performance, system 1-7 point-to-point line 8-5

POP 6-4

POPA 6-4

POPF 6-6, 9-8

POR 4-4 port, diagnostic checkpoint 1-39 post 9-17 power good signal 3-5 power LED and key lock connector 172 power on reset 4-4 power supply connectors 1-71 inputs 3-3 output connectors 3-7 outputs 3-4 power-on routine print screen key 5-22 priorities, shift key 5-21 processor control instructions 6-17 program interrupts 5-3 program loops 9-14 programming hints,

BIOS 5-10 programming, coprocessor 2-3 protected mode 1-5,5-6 protection control instructions 6-18 protection, no load 3-5 provisions, multitasking 9-16

PTAN 6-26

PUSH 6-3

PUSH SP 9-8

PUSHA 6-4

PUSHF 6-6

Q quick reference charts

R

RAM jumper

RAM modules

RAM, CMOS rate, typematic

1-40

RAM subsystem real mode 5-3

1-24

1-24

1-56

4-4, 4-7 real address mode 1-4, 2-5 real-time clock 1-56, 1-57 record, configuration 1-56 refid=admod.virtual 1-4

REFRESH 1-35 refresh controller 1-7

7-14

Index-8

refresh request generator 1-22 regulation tolerance 3-4

REP/REPNE,

REPZ/REPNZ 6-12 requirements, input 3-3 reserved memory locations 5-9 reserved scan codes 1-47

RESET DRV' 1-32 reset, system 5 -21

RET 6-13

ROM BIOS 9-10

ROM BIOS data area 9-14

ROM modules, additional 5-13

ROM scan codes 5-13

ROM subsystem 1-23

ROM/EPROM modules 1-23 rotate instructions 6-9 rotational, speed 9-6 routine, interrupt service 1-33 routine, keyboard 5-23

RS-232 8-3

RSTOR 6-28 s

SAHF 6-5

SAVE 6-28

SAO-SA19 1-31

SBB 6-7

SBHE 1-35 scan code translation 1-43 scan codes 4-11 scan codes, key 4-11 scan codes, ROM 5-13

SCAS 6-11 scroll lock key 5-20

SDO-SD15 1-32 segment address 1-4 segments 1-5 sense levels, output voltage 3-6 sequencing, output voltage 3-4 serialization, multitasking 9-16

SETPM 6-27

SGDT 6-18 shift counts 9-9 shift instructions 6-9 shift key 5-19 shift key priorities 5-21

Shift state 5-18 shift states 5-19

SIDT 6-18 signals diskette change 9-6

I/O channels 1-31 power good 3-5 system clock 9-4 single step interrupt 9-8

SLDT 6-18

SMEMR 1-34

SMEMW 1-34

SMSW 6-19 sound control 9-13

Spanish keyboard 4-19 speaker 1-40 speaker connector 1-72 speaker tone generation 1-22 special vectors 5-6 specifications specifications, keyboard 4-22 startup, multitasking 9-16 states

Ctrl 5-18

Num Lock 5-18

Shift 5-18,5-19

Index-9

status register, keyboard controller 1-49

STC 6-17

STCW 6-27

STD 6-17

STENV 6-27

STI 6-17

STOS 6-12

STR 6-19 string manipulation instructions 6-11

STSW 6-27

STSWAX 6-27

SUB 6-7 subsystem, RAM 1-24 subsystem, ROM 1-23 support joystick 5-6 switched network 8-5 switches keyboard inhibit 1-48 type of display 1-41 system BIOS usage 5-3 system block diagram xiv system board 1-3 system board block diagram ­ type 1 1-6 system board block diagram ­ type 2 1,..

6 system board connectors 1-71 system board layout 1-7 4 system bus high enable 1-35 system clock 1-7 system clock signal 9-4 system interrupts 1-12 system performance 1-7 system request key 5-6, 5-22 system reset 5-21 system timer block diagram 1-22 system timers 1-22

T

T/C 1-35 table, translation 1-45 tables, parameter 9-12 terminal count 1-35

TEST 6-10 test inputs, keyboard controller 1-54 time-outs 9-19 timer/counter 1-22 timer/counters 1-22 timers, system 1-22 tone generation, speaker 1-22 track density, diskette 9-6 track-to-track access time 9-6 translation table 1-45 translation, scan code 1-43 tri-state 1-36 type of display adapter switch 1-41 typematic keys 4-4 typematic rate 4-4,4-7 u u.K. v

English keyboard 4-20

U.S. English keyboard 4-21 variable capacitor 1-41 vectors, special 5-6

VERR 6-19 video display buffers 9-14

Index-tO

virtual address mode

1-4, 2-5

Y

W

~

WAIT 6-17

wait condition

9-17

wait loop classes workspace, default

9-17

segment

5-9

write current, diskette

9-7

YL2XPI 6-27

Z zero wait state

1-36

Numerals

X

XCHG 6-4

XLAT 6-5

XOR 6-11

~

OWS 1-36

2XMl 6-26

80286 1-4

8042 1-42

82288 1-32

8237A-5 1-9

8254-2 1-22

8259A

Interrupt

1-12

Index-II

Notes:

Index-12

-

----

-

-

---

-

--_.­

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