Dynabyte 5505 Technical Manual

5505

Computer Unit

Technical Manual

5505 CCJt1PUTER

MAINTENANCE

TABLE OF CONTENTS

1.

GENERAL

Features.

2.

PHYSICAL DESCRIPTION •

Front Panel

Rear Panel

Card Cage -- S-IOO Bus.

S-IOO Bus Cards •

Power Supply fvt:>dule •

Diskette Drive.

Winchester Drive.

3. FUNCTIONAL DESCRIPTION •

4. SPECIFICATIONS •

5.

OPERATION AND INSTALLATION •

Unpacking

Ac Line •

Options •

Set

Up and Turn On.

6. MAINTENANCE.

Customer Support Service.

Repacking and Returning Material.

Diagnostics •

Fault Location.

Power Supply fvt:>dule Voltages and Adjustment

Removing Assemblies •

7. REFERENCES •

S-100 Bus •

.,

Schematics and Replaceable Parts.

OEM

EquiJ;ment •

DYNABYTE - Page 1

3

3

6

7

7

.10

.11

.14

.14

.14

.15

.21

.27

.27

.28

.28

.28

.35

.35

.35

.37

.37

.38

.39

.44

.44

.44

.44

5505 Technical Manual

404512

ILLUSTRATIONS

Table 1-1 -- 5505 Computer, Models • • •

Figure 2-1 -- 5505 Computer, Front Panel

.

. . .

• 5

. . . . . . . .

• 5

Table 2-1 -- 5505 Computer, Front Panel Controls and Indicators. • • • • 6

Figure 2-2 -- 5505 Computer, Rear Panel. • • • • • • • • • • • • 8

Table 2-2 -- 5505 Computer, Rear Panel Controls and Connectors.

Table 2-3 -- 5505 Computer, Interior Major Assemblies • • •

Figure 3-1 -- 5505 Computer Functional Block Diagram •

Table 4-1 -- 5505 Computer Functional Specifications •

. .

Figure 5-1 -- Central Processing Unit, Option Switch Settings.

• .31

Figure 5-2 -- 641< Random Access Memory, Option Switch Settings •

• • • 32

Figure 5-3 -- Disk Controller, Option Switch Settings • • • • • •

. .

.33

Figure 5-4 -- Auxiliary Disk Controller, Option Switch Settings ••

.34

Figure 6-1 -- Dynabyte Identification Plate. • • • • • • • • • .37

Figure 6-2 -- Power Supply Module Voltage Test Points, BS1 • • • •

Table 6-1 -- Troubleshooting Chart • • • • • • •

. .

. .

• •• 38

Table 7-1 -- Dynabyte 8-100 Bus Pin Assignments. • •

. .

. .

• .45

Figure 7-1 -- 5505 Computer Chassis Wiring Diagram • •

Table 7-2 --. 5505 Computer Replaceable Parts List.

• .51

.52

• 8

.13

.17

.22

DYNABYTE - Page 2


404512

1.

GENERAL

1.01 This manual provides a physical and functional description and the operating theory necessary for effective installation and field service of the 5505 Computer.

Features

1.02 The 5505 Computer, illustrated on the title page, is supplied individually or as a system component to a larger Dynabyte computer system. Its features include the following:

• Z-80 microprocessor operating at 4 MHz.

• Two serial, software-programmable 110 to 76,800 baud ports. Each of the ports' data lines may be configured to an RS-232C level or 20 current loop data communication line interface. rnA

• One parallel port wi th full handshaking logic.

• Double Density Diskette Controller.

•

Mini~inchester

Controller.

• Built-in Diskette Drive in single-sided or double-sided configuration (see Table 1-1).

• Built-in

Mini~inchester

Drive (see Table 1-1).

• Ten internal timers.

• Sixteen priortized vectored interrupts.

• A real-time clock.

• 64K of Random Access Memory. Optional memory to 400K bytes can also be provided with multiple memory cards.

• The power supply module features pre regulation to minimize operational problems from brown outs and line voltage surges.

• Efficient cooling of the 5505 S-IOO cards and power supply is assured by a 4-5/8 inch axial fan furnishing air through the chassis and exhausted out through the rear panel.

• The backplane is shielded and fully socketed for 12 S-IOO card positions.

• Heavy' duty metal construction.

• The front panel switches POWER and RESET-HALT are illuminated.

• A line fuse is provided for ac line protection.

DYNABYTE - Page 3

5505 Technical Manual 404512

• Each internal subassembly is modular and is unit-replaceable for ease in servicing.

• Each 5505 carries a lBO-day warranty on parts and labor from the date of shipment from Dynabyte.

• Each 5505 is burned in for a minimum of 72 hours.

DYNABYTE -Page 4


404512

Table 1-1 -- 5505 ~omputer, Models

5505 - Al

5505 - Bl 5505 - Cl

Floppy Disk Drive

Surfaces

Unfonnatted Capacity

Fonnatted Capacity

Winchester Hard Disk Drive

Surfaces

Unfonnatted Capacity

Formatted Capacity

1

500K

315K

2

1000K

655K

2

1000K

655K

4

6. 4MB

5. 32MB

4

10. 67MB a.9MB

6

16MB

13.4MB

1.03 Dynabyte maintains hardware and software compatibility with Dynabyte

S-100 .cards used in the Dynabyte S-IOO Bus only. S-IOO

I/O cards, e.g., modems, clocks, and parallel ports from other manufacturers will be compatible with the Dynabyte S-100 Bus in most cases. Contact Dynabyte for specific applications.

4

Figure 2-1 -- 5505' Computer, Front Panel 807129

DYNABYTE - Page 5


Table 2-1 -- 5505 Computer, Front Panel Controls and Indicators

404512

Key

1

2

3

Element

POWER ON OFF

SWitch and Indicator

RESET Switch and

HALT Indicator

Diskette Drive

Function

Applies the ac line to the 5505 Computer and the ac power receptacle on the rear panel.

Refer to Figure 2-2, Key 3. The indicator lights When +8 Vdc is available from the power supply.

Momentarily grounds the S-IOO Reset line generating a Power On Clear (POC) sequence:

(1) CPU Program Counter is reset,

(2) Disk Contoller is reset.

When the indicator is lit, the CPU has stopped at a Z-80 HLT (76H) instruction in the program.

Provides for reading and writing onto 5.25" double and single sided floppy Diskettes for permanent storage of programs and data files.

Lit when Disk Controller selects drive for a read or write operation.

4

Diskette Drive

Select Indicator

2. PHYSICAL DESCRIPTION

2.01 The 5505 Computer is an integrated piece incorporating all necessary component assemblies. are: of electronic equipment

The principle assemblies

(1) Power Supply Module

(2) Central Processing Unit (CPU)

(3) S-lOO Bus Card Cage and Motherboard

(4) Random Access Memory (RAM)

(5) Floppy Disk Controller

(6 ) Diskette Drive

(7) Hard Disk Controller

(8) Winchester Hard Disk Drive

Some of the optional assemblies are:

(9) Octaport (an eight-port seria~ I/O).

(10) Additional Random Access Memory (RAM).

DYNABYTE - Page 6

5505

Technical Manual

404512

Details on these individual assemblies, as well as their schematic diagrams and ,replaceable parts lists, are funished under separate cover as individual technical manuals. These assemblies have been enclosed in an exceptionally compact package measuring 52 em x 47 em x 18 em (20.5 in. x 18.5 in. x 7 in.) weighing 25 kg (about 55 lbs.).

2.02

The 5505 draws nominally 400 VA of 115 Vac, 60 Hz commercial power. It may be factory optioned for operation from a 230 Vac, 50 Hz line.

2.03

The 5505 is designed to operate efficiently in an environment with an ambient temperature range from 10 to 35 degrees Centrigrade (50 to 95 degrees Farenheit) and with a relative humidity from 20 to 80 percent.

2.04 Figures 2-1 and 2-2 provide number key callouts of all components located on the front, rear and interior of the 5505. Associated Tables 2-1 through 2-3 provide a cross reference for each callout, identifying the respective part as to function, description and/or designation.

Front Panel

2.05 Refer to Figure 2-1 for the description Which follows. The 5505

Computer Front Panel has only two operating controls with which the user should be concerned.

(1)

The

POWER

ON OFF Switch turns the computer on and off. The switch also connects the ac line power to a convenience receptacle on the rear panel.

The switch also contains an indicator which lights when there is an output from the internal

+8

Vdc power supply.

(2)

The RESET Switch is used to restart the computer if it should become locked up due to a software or hardware malfunction. Operating the RESET

Switch causes the S-IOO Reset Line, Pin 75, to be active low. The Reset

Line is an input to the Power

On

Clear (POC) circuits and resets the CPU

Program Counter, Disk Controller, etc. Then the CPU initiates a reboot by jumping to a starting address appropriate for the user's system. The switch also contains an indicator, which, when lit, indicates the CPU has read a

Halt (HLT) instruction and has stopped.

The right half of the front panel contains the 5.25 inch diskette storage unit.

Rear Panel

2.06 Figure 2-2 illustrates the Rear Panel of the 5505 Computer. Table 2-2 tabulates and describes each of the rear panel elements.

Ac line and computer

Input Output (I/O) connections are through the rear panel. At the right, the ac line is connected through an IEC connector. This permits the 5505 to be connected domestically to 115 Vac, 60 Hz with a National Electrical

Manufacturers Association (NEMA) cord set or internationally with a cord set appropriate for that country. A line fuse provides protection for the 5505 and equipment powered from the ac convenience receptacle above.

. DYNABYTE - Pag e 7


404512

Figure 2-2 -- 5505 Computer, Rear Panel - 802470

Table 2-2 -- 5505 Computer

Rear Panel Controls and Connectors

Key

1

2

3

Element

Function

Ac Line Receptacle (J6) lEe standard three-wire male receptacle.

Provides for ac line, neutral and a third wire bonded to the chassis frame. Mates with

Belden P-2392 ac cord set for U.S. domestic use or the appropriate cord set for the export country.

Ac Line Fuse (Fl)

Provides ac line overcurrent protection:

(1 ) 115 Vac -- 6 A.

(2) 230 Vac -- 3 A.

Early serial number units are provided with a circuit breaker in this position.

SWITCHED AC OUTLET

Receptacle (J7)

. the ac line, neutral and third wire bonded to the chassis frame. '!his receptacle is switched

DYNABYTE - Page 8


4

5

6

7

8

9

10

11

404Sl2

Axial Fan

Dynabyte Identification

Plate

SERIAL 1 PRINTER

Port Receptacle

SERIAL 2 TERMINAL

Port Receptacle

PARALLEL I/O Port

Receptacle

FLOPPY DISK I/O

Receptacle

Hard Disk I/O Access

Hole and Clamp

I/O Port Connector Area by the POWER ON Switch on the front panel refer to Figure 2-1, Key 1 - and is protected by fuse, Key 2, above.

Provides for drawing heat from the power supply module and internal heat dissipating pc assemblies.

Furnishes the model and serial number necessary for warranty service. Refer to Figure

6-1.

O8-2S-S connector. Optionally EIA RS-232C or

20 rnA current interface. Connection point for the EIA cable to the Serial Printer.

D8-2S-S connector. Optionally EIA RS-232C or

20 rnA current interface. Connection point for the EIA cable to the Video Tenninal.

DB-2S-S connector. Eight-bit parallel I/O connection point to 2S-conductor cable to a parallel printer.

SO-conductor ribbon connector. Provides a connection point for the cable to the

Dynabyte 5010 Dual Diskette Storage.

Furnishes a hole and clamp for the cable to the Dynabyte S012 Cartridge Module Drive or

SOlI or 5013 Winchester Drive.

Provides positions for O8-2S-S connectors.

Figure 2-2 illustrates connectors for:

(1) Three ports from the CPU

(2) Up to 16 ports from;~p to two

Octaport cards.

'<

CAUTION

Power consumption from the ac convenience" receptacle is limited to 200 V A.

2.07 A four-inch fan draws heat dissipated internally out of the rear panel. Air is drawn into the 5S05 cabinet through louvers provided in the bottom of the cabinet.

DYNABYTE - Pag e 9


404512

IMPORTANT

Install the 5505 Computer so as not to obstruct the air flow through the louvers in the bottom of the cabinet and allow a three-inch clearance from the rear of the fan.

Desk-type system cabinets supplied from Dynabyte are designed to assure constant air flow through the computer.

2.08 Several mass storage devices can be used with the 5505. The rear panel furnishes connector access for these devices.

(1)

A fifty-pin ribbon cable connector provides for disk I/O signals, control signals and status signals to a Dynabyte 5010 Dual Diskette Storage

Unit.

(2) disk unit.

A rectangular hole provides access for a multi-wire ribbon cable for

I/O signals, control and status to a Dynabyte 5011 or 5013 storage

2.09 Sixteen positions are provided on the rear panel for.08-25-S connectors and are used for I/O signals to the system peripheral devices such as:

(1)

Serial Printers

(2) Video Terminals

(3) Parallel I/O Printer

(4) Acoustical Coupler or Modems

Each installation will vary depending upon the selection of peripheral devices and the applications programs in use. Three I/O ports are furnished as part of the cpu.

These are shown connected to the rear panel illustrated in Figure

2-2. In applications requiring additional ports, a Quadraport or an Octaport may be installed into the S-lOO Bus and interconected to the rear panel. Both the front and rear panels are secured to their respective bezel by 6-32 Kep nuts. Each bezel is secured to the base plate by 6-32 screws. Both panel and bezel may be easily removed for servicing or installation of additional I/O ports in the field.

Card Cage 5-100 Bus

2.10 The card cage furnishes a rigid support structure for the S-IOO Bus cards when they are inserted into the S-IOO Bus. The Motherboard PC Assembly contains 12 S-IOO Bus receptacles or jacks, Jl through J12. Each jack has. 100 separate pins. The actual bus consists of 100 parallel traces on the pc board connecting the same pin on each jack. Each line has a ground trace between it and the adjacent line to minimize coupling between signal lines.

DYNABYTE - Page 10


2.11 The 8-100 Bus lines are described by function in Part 3 of this manual. Physically they make up five groups:

(1) Power and common lines. These are connected to the power supply module discussed in 2.17. 8ix lines.

(2) Address lines. 16 lines.

(3) Data In and Out lines. 16 lines.

(4) Control 8ignal lines. 40 lines.

(5) Dynabyte Reserved lines. 22 lines.

The Motherboard PC Assembly also contains a few discrete components which make up the Halt Detector. The Halt Detector and Reset line are connected to the front panel by a four-conductor receptacle, J13, connected to plug, P13, mounted at the front edge of the Motherboard

PC

Assembly.

5-100 Bus Cards

2~12

Dynabyte 5-100 Bus cards are pc assemblies normally measuring 5 x 10 inches.

A laO-pin edge connector mates with the 8-100 Bus connector on the motherboard. This connector is offset by 5/8 inch from the card centerline, i.e., an 8-100 Bus card cannot be inserted into a jack backwards.

2.13 Dynabyte 8-100 Bus cards may have one or more on-board regulators for regulating and distributing the dc power supply voltages from the bus to the logical elements on the card.

NOTE

An

5-100 Bus card should never be inserted or removed from the bus when the ac 1 ine power is on.

2.14 A solder mask is applied to the component and non-component sides of the pc boards when it is manufactured and before it is loaded with components.

This mask covers all surfaces except:

(1) The 100 gold-plated fingers of the edge connectors,

(2) Each of the plated-through holes.

The solder mask assures there will be no bridges between traces. The soldering operation can then only take place. at a hole where normally solder joins a component lead and a pad.

2.15 Dynabyte 8-100 Bus cards usually provide sockets for most multi-lead active devices to facilitate fault location and servicing.

2.16 Options for Dynabyte 8-100 cards are provided by three m~thods:

(1) Dual-In-Line packaged (DIP) switches of one to nine poles, 8PST, are normally used in functions which may have to be set to the user's individual

DYNABYTE - Page 11


404512 installation.

(2) Bare wire straps are soldered into the pc board for options Which are installed at the factory. These are not to be changed in the field except by instructions from Dynabyte Customer Support or When specified in the individual Dynabyte S-100 Bus Card Technical Manual.

IMPORTANT

Never change the settings of an Option Switch without referring to the Option Switch Tables in the individual

Dynabyte 8-100 Bus Card Technical Manual.

(3) Instructions are written into a programmable read-only memory (PROM) at the Dynabyte factory, resulting in a read-only memory (ROM). In some applications a ROM can be phantomed" into a desired range of addressed RAM.

Phantoming means a memory segment can replace another under program control.

When the 5505 is set to POWER ON or RESET is operated, the CPU jumps to the

I starting address of the disk controller ROM. The ROM boot instructions are overlaid at the common address location. These instructions are for the CPU to read Track 0, Sector 1 from Drive A. This particular operation is called the ROM Boot. Track 0, Sector 1 contains additional instructions which are loaded into-RAM and executed. These instuctions cause the CPU to read the

Dynabyte Disk Operating System from the diskette or disk. This second operation is called the Disk Boot. The ROM is then switched out.

NOTE

Dynabyte ROMs are individually marked with a Dynabyte part number. The part number represents an individual program for a specific equipment configuration. The ROM part numbers are tabulated for various equipment configurations in the specific 8-100 Bus Card Technical Manual.

Changes in options of this type are made by exchanging the particular ROM.

ROMs are only available from Dynabyte.

2.17 Dynabyte S-lOO Bus cards carry a distinctive White silkscreened marking on the component side of the pc assembly.

(1) The card name and part number. This facilitates board identification and referencing for reordering, servicing and referencing the appropriate

Dynabyte S-lOO Card Technical Manual, schematic or replaceable parts list.

(2) Component reference designators are marked When practical. They facilitate locating the individual part on a schematic or parts list.

Most Dynabyte PC assemblies derive the major component reference designators from a row-column matrix silkscreened onto the pc board. For example, rows are A to

0 and columns are 1 to

18 on the 64K RAM card.

An integrated

DYNABYTE - Page 12

5505

Technical Manual

404512 circuit located in the upper left corner is Al and the one located in the lower right corner is 018.

Table

2-3 -- 5505

Computer, Interior Major Assemblies

Element

Axial Fan

Power Supply M:>dule

807392

Card Cage and S-IOO Bus

PC

Assembly

800038

Front Panel Indicator

Connector

Rear Cable

CPU PC Assembly

803439

J13

Front Panel Power

Connector

CPU I/O Cable

Floppy

Ma in

800285

Aux

807658

Random Access Memory

PC Assembly 800589

FUnction

Provides forced air cooling to the power supply module and internal heat dissipating pc assemblies.

Accepts 115 or 230 Vac, 50-60 Hz and supplies the following preregulated voltages to the

S-IOO Bus and other assemblies:

(1) +16

(2) +12

Vdc

Vdc

(3)

+

8

Vdc

(4)

+

5

Vdc

(5)

Power Supply cornmon

(6) -16 Vdc.

Provides

12 pc assembly positions. Power and signal busses are tabulated by function in

Table

7-1.

A four-position connector Which provides a connection point for the cable to the

POWER

ON, HALT indi~ators and the RESET switch on the front panel.

A two-position connector Which provides a connection point for the cable to the POWER

ON switch on the front panel.

Provides for the interconnection of data, status and control between the CPU PC

Assembly and the rear panel I/O ports. Refer to Table

2-2,

Key

6, 7 and

8.

Provides for the interconnection of data, status and control between the Floppy Controller

PC

Assembly and the Rear Panel Disk

I/O receptacle. Refer to Table

2-2,

Key

9.

Provides storage for the Operating System,

Application Program and variables during program execution.

Provides a central processor, interrupt logic, two serial I/O ports and one parallel I/O port.

DYNABYTE - Page 13


Disk Controller PC

Assembly 807525

Winchester Controller

PC Assembly 807677

Cabinet Louvers

Auxiliary Controller

807506

5.25 Floppy Drive to

Aux Cable 807639

Data Separator Card

807243

Provides the logic, status registers and ROM bootstrap to support the Dynabyte diskette drive.

Provides the logic, status registers and data buffer to support the hard disk drive.

Provides air inlets for drawing air into the cabinet for ventilation.

Provides the specialized electrical functions for:

(1) 5.25 inch diskette drives

(2) 8.00 inch diskette drives option strapping allows the Disk Controller,

Key 10 above, to work with both types of media.

Provides for supplying I/O signals to the drive module.

Converts data in a disk format to data readable by the Winchester Controller.

404512

2.18 Input/Output (I/O) Signals not affecting the S-lOO Bus are transferred over special multi-pin connectors normally located at the top of the pc assembly. Cable harnesses which mate with these connectors are normally made up of flat multi-pair or flat twisted multi-pair cable.

Power Supply Module

2.19 The power supply module is located at the rear of the 5505 cabinet between the card cage and the rear panel. The power supply operates on 115 or

230 Vac, 50 or 60 Hz line, optioned internally by straps. It utilizes a phasecontrolled regulator to provide ac line and load regulation. The supply operates at relatively high efficiency and utilizes a minimum of components resulting in high reliability. The ac chassis wiring to the power supply module includes an EMI filter to minimize radiation of power supply switching transients over the ac line.

Diskette Drive

2.20 The Diskette Drive is mounted at the right front of the chassis. Power for this module is furnished from the 5505 power supply module.

Winchester Drive

2.21 The Winchester Hard Disk is mounted at the right front of the chassis.

Power for this module is furnished from the 5505 power supply module.

DYNABYTE - Page 14


404512

3. FUNCTIONAL DESCRIPTION

3.01 Part 3 will furnish the user with an overview of the 5505 Computer and the 5-100 Bus. Detailed information on individual Dynabyte 5-100 cards is provided in its technical manual.

NOTE

An

* suffix to a signal name indicates logical NOT and active low.

3.02 Figure.3-1 illustrates the 5505 computer in block diagram. It should be used in conjunction with the schematic diagrams in Part 7 to familiarize the user with the circuits. The 5505 Computer chassis can be divided into four logical sections:

(1) Ope~ational Controls

(2) Power Supply M:>dule

(3) 5-100 Bus

(4) 5.25 inch Diskette Drive

(5) 5.25 inch Winchester Hard Disk Drive

3.03 Two operation controls are provided on the 5505 Computer.

(1) The POWER switch applies ac line voltage to the fan, ac convenience receptacle and power supply module. The POWER ON indicator is lit \IA1en the power supply module outputs nominally +8 Vdc.

(2) The RE5ET switch pulls the Reset line, Pin 75, of the 5-100 Bus low to initiate a restart of the CPU, etc. The reset switch housing contains a lamp and indicates a halt when lit. A Halt Detector is part of the 5-100

Motherboard PC Assembly. This detector monitors the HLTA line, Pin 48. When this status line goes high, a HLT instruction has been executed. The HALT indicator is lit.

3.04 The Power SUpply Module converts ac line voltage to low dc voltages for the 5-100 Bus and monitoring circuits. It provides regulation against ac line fluctuations and load variations of the 5-100 Bus. The output voltages are nominally:

(1) +16 Vdc

(2) +12 Vdc

(3) + 8 Vdc

(4) + 5 Vdc

(5) -16 Vdc.

DYNABYTE - Pag e 15


404512

One adjustment, R2 on the M:>dulator PC Assembly and part of the power supply module, is used to set the +8 Vdc supply output voltage. The other voltages are nominal and track the +8 Vdc. Refer to Figure 6-2 for the tolerance range.

3.05 Regulation is provided by a triac modulating the ac line applied to the low voltage power transformer. The +8 Vdc output line is monitored and a feedback loop is used to control the conduction of the triac resulting in phase-controlled regulation.

3.06 The +16, +8 and -16 output voltages are passively filtered. Ripple on the +8 Vdc line is 0.3 to 1 Volt. The +5 and +12 voltages are set and controlled by three-terminal regulators. These two voltages power the diskette and hard disk drives.

3.07 The S-IOO Bus system consists of a set of signal lines used to carry all information, interface messages and device-dependent messages among interconnected devices.

3.08 The bus structure is organized into seven sets of signal lines: Refer to Table 7-1 for descriptions of the following.

(1 )

Data Lines

(2) Address Lines

(3)

Status Bus

(4) Control Output

(5) Control Input Bus

(6 ) Vectored Interrupt Bus

(7 ) Utility Bus.

DYNABYTE - Page 16

I/O Ports

-----

Central

Processing

Unit

Random

Access

Memory

/

--""

r

/11

Interconnect

/

~al

....

/

1 /

~allell@h

U'1

U'1 o

U'1 t-3

CD o

~

::s

...... o

OJ

~

Ul

..,

CD w

I

~

-------~+-~~~~----~~------------~------~J_--~--

/ Dynabyte S-100 Bus

I

'"0

OJ

I.Q

CD

~

6;

~

[%]

~

-...J

U1

U1

0

U1

()

~ r1'

..,

g

0

...,.

0

::J

OJ

~ to

~

0

0

~

...,.

..,

~

~~LThlIl

/ I

Line -600 VA

'I

1

/1

'\.1

Neutral

1

LI

"I

J6

60 Hz Reference

1--------

+16 Vdc

1--------

+12 Vdc

1 - - - - - I I t - - -

+8 Vdc

Line Filter and

Power Supply

1-----+----

+5 Vdc

1 - - - - - - ; - - - - -16 Vdc

{[wTICHEoAcOUTLITI l~i~=;O;VA

~I

_

, - _ _ _ _ _

, , _

-vO

:J w

I

I®rnE~

I

FANS

L _-_

_-=-=-

~

i

Neutral ION OFFI

S2

1

I

1

~

/

~

~,

Halt

Detector

Data

Separator

/

~O

~

V3lt

Slt

II

Winchester

Drive

~,

Aux

Controller

AI'

V

/ 34

1,

5%

Diskette

Drive


404512

NOTE

In and Out References are in respect to the CPU.

3.09 The data bus consists of 16 lines grouped as two unidirectional 8-bit busses for byte operations.

(I) Data output appears on the data output bus DOO - D07. D07 is the most significant bit.

(2) Data input appears on the data input bus DIO - DI7. DI7 is the most significant bit.

3.10 The address bus consists of 16 signal lines used to select a specific location in memory or a specific input/output device for communications during the current bus cycle. The memory address bus consists of 16 lines specifying

1 of 64K memory locations. These 16 lines are named AO through A15, Where A15 is the most significant bit. The I/O device address bus consists of lines, AO through A7, specifying 1 of 256 I/O devices, with A7 used as the most significant bit. Address lines A15 - A8 are used as an I/O address modifier in specific cases, i.e., the Octaport.

3.11 The status bus consists of nine lines that identify the nature of the bus cycle in progress and qualify the nature of the address on the address bus. The mnemonics for status lines always begin with a lo~r case sand consist of:

(I) Memory Read -- sMEMR

(2) Op-Code Fetch -- sMl

(3)

Input -- sINP

(4) Output - sOUT

(5) Write Cycle -- sWO*

(6)

Interrupt Acknowledge -- sINTA

(7) Halt Acknowledge -- sHLTA

(8) Memory Request -- sMREQ*

(9 )

Memory Refresh -- sRFSH*

3.12 The lines of the control output bus dete~ine the timing and movement of data during any bus cycle. The mnemonics for the control output lines always begin with a lo~r case p. The four lines are:

(I) pSYNC*, which indicates the start of a new bus cycle.

(2) pDBIN, a generalized read strobe that gates data from an addressed slave onto. the data bus.

DYNABYTE - Page 18


404512

(3) pWR*, a generalized write strobe that writes data from the data bus into an addressed slave.

(4) pHLDA, the hold acknowledge signal that indicates to the highest priority temporary master that the pennanent master is relinquishing control of the bus.

3.13 The five lines of the control input bus allow bus slaves to synchronize the operations of bus masters with conditions internal to the bus slave, e.g., data not ready, and to request operations of the permanent master, e.g., interrupt or hold. The five control input lines are:

(1) ROY

(2) XRDY

(3) INT*

(4) NMI*

(5) HOLD*

The ready lines are used by bus slaves to synchronize bus masters to the response speed of the slave. Thus cycles are suspended and wait states inserted until both ready lines are asserted. The ROY line is the general ready line for bus slaves. It is specified as an open collector line. The XRDY line is a special ready line used by test devices to stop and single-step bus masters. It is not specified as an open collector line and should not be used by other bus slaves since a bus conflict may exist.

3.14 . The two interrupt lines INT* and NMI* are. used to request service from the perma~ent b~s master. The INT* line may be masked off by the bus master,

~sually

VIa an Internal software geqeratiQn. If the bus ma~ter accePts the

Interrupt request on the INT* lIne, It may respond WIth an Interrupt acknowledge bus cycle accepting vectoring information from the data bus.

3.15 The NMI* line is a nonmaskable interrupt request line, that is, it may not be masked off by the bus master. Accepting an interrupt on the NMI* line will not generate an interrupt acknowledge bus cycle.

An interrupt request on the INT* line is asserted as a level, that is, the line is asserted until interrupt service is received.

An interrupt request on the NMI* line, on the other hand, is asserted as a negative-going edge, since no interrupt acknowledge cycle will be generated. Both lines are specified as opencollector lines.

3.16 The hold request line, HOLD * , is used by temporary bus masters to request control of the bus from the permanent bus master to prevent temporary masters from gaining bus control. The HOLD* line is specified as an open collector line and may only be asserted at certain times.

3.17 The eight lines of the vectored interrupt bus are used in conjunction with the generalized vectored interrupt request, INT*, to arbitrate among eight levels of interrupt request priorities. The eight lines of the vectored interrupt bus are VIO* through VI7*, where VIO* is considered the highest priority interrupt. The vectored interrupt lines should be implemented as

DYNABYTE - Page 19


404512 levels; that is, they should be held active until service is received.

3.18 Power in the Dynabyte 8-100 Bus systems is distributed to bus devices as unregulated voltages. A total of six bus lines is used:

(1) +8 Volts, 2 lines

(2) +16 Volts, 1 line

(3) -16 Volts, 1 line

(4) Power supply common, 2 lines.

3.19 The system clock, 4 MHZ PHASE 2, is generated by the cpu.

The control timing for all bus cycles must be derived from this clock. This signal is never transferred during a bus exchange operation.

3.20 Another line, called CLOCK, is specified as a 2 MHz, 0.5 percent tolerance, signal with no relationship to any other bus signal. It is used by counters, timers, baud-rate generators, etc.

3.21 8ystem reset functions are divided into two lines:

(1) RE8ET* is an open collector input line that requests a Power On Clear

(POC) •

(2) POC*, power on clear is active on PCMER ON and when requested by

RE8ET*, is specified as having a minimum active period of 10 ms.

3.22 The memory write strobe, MWRT, is generated by the permanent bus master and is defined as:

MWRT

= pWR • sOUT* (logic equation)

3.23 Another line, PHANIDM*, is provided for overlaying bus slaves at a common address location. When this line is activated, phantom bus slaves are enabled and nonnal bus slaves are disabled. This line is specified as an opencollector line.

3.24 The remaining lines are designated as Dynabyte reserved and for use in future 8-100 card and system designs.

3.25 The Diskette Drive provides the 5505 Computer with internal mass storage for application programs and data files. Each diskette will store 655K formatted bytes in the double-sided mode.

An

Auxiliary Controller is part of the drive module. The Auxiliary Controller allows the Disk Controller, installed in the 8-100 Bus, to be used with double density 5.25 inch diskettes. Disk Controller I/O signals are supplied to a 50-pin receptacle on the rear panel for additional mass storage, e.g., 5010.

3.26 The Winchester Hard Disk Drive provides the 5505 Computer with additional mass storage ()f"5.3iMB, 8. 9MB, or 13.4MB formatted capacity, depending on the model of the 5505 (see Table 1-1).

DYNABYTE - Page 20


404512

4. SPECIFICATIONS

4.01,.

Part 4 furnishes the user with information for shipping and installation and should be used to establish acceptance tests if they are performed. Minor deviations from the specifications tabulated in Table

4-1 which do not affect the 5505 Computer are excluded from the Dynabyte Warranty.

4.02

The functional specifications of the 5505 Computer are determined by:

(1) The Dynabyte Disk Operating System and the particular application program running, i.e., the software.

(2) The specific Dynabyte S-lOO cards installed in the bus, i.e., the hardware.

4.03

Table

4-1 summarizes the 5505 Computer Functional Specifications with the following hardware:

(1) Central Processing Unit

(2) 641< Random Access Memory.

For other hardware configurations the user should refer to the individual

Dynabyte 5-100 Card Technical Manual Specifications.

DYNABYTE - Page

21


404512

Table 4-1 5505 Computer Functional Specifications

PARAMETER

CHARACTERISTICS

Front Panel Section

Power Switch

Reset Switch

Alternate action. Lit in POWER

ON condition.

Momentary action. Lit when the CPU is in the HALT condition.

Card Cage Section

System

Capacity

EMI

Processor Section

Type

Dynabyte S-IOO Bus

12 positions

Fully shielded backplane

Clock Rate

Instruction Set

Interval Timer

Z-80A

4 MHz

158

Number

Time Unit

Range

Interrupt

Real-Time Clock

Frequency

Indication

Interrupts

Number

Prfority,

Highest

10

64 microseconds per count

1 to 255 units (64 microseconds - 16.32 ms)

Interrupts on 0 count under program control

Ac line synchronous

Sets status bit or causes interrupt

16

Timer 6

Timer 7

Port Interrupt

Timer 8

Serial 2 Receive Data Available

Serial 2 Transmit Data Available

Timer 9

Timer 10 or Parallel Port Input Bit 7

Timer 1

Timer 2

Real-Time Clock

Timer 3

Serial 1 Receive Data Available

Serial 1 Transmit Buffer Empty

Timer 4

DYNABYTE - Page 22


404512

PARAMETER

CHARACTERISTICS

Priority,

Lowest Timer 5

Levels of Interrupt 2

Masking

Levell

Level 2

Masks all interrupts

Individual masking of interrupts

Off Card Interrupts One maskable

One unmaskable

Input/OUtput Section

Serial Ports

Rates

Rate Selection

Connector

Data In

Data Out

Signal Common

Data In

Data Out

Parallel Port

Input

Input Ready Flag

Input Sense

Output

OUtput Strobe

OUtput Flags

Connector

2

110, 150, 300, 880, 1200, 2400, 4800, 9600, 19,200,

38,400, 76,800 baud

Software control

O8-25-S

EIA RS-232C

EIA RS-232C

EIA RS-232C

20 rna current loop

20 rna current loop

1

8 bits

Edge triggered

1 bit

8 bits

1 bit

2

OB-25-S

Memory Section

Random Access

Mdress

Size

Type

Ojcle Time

Optional

Size

Floppy Diskette Drive

16 bits

65,536 bytes (64K)

Dynamic

400 ns

Bank swi tching

400K bytes maximum

M)DEL 5505-Al M:>DELS 5505-81, -Cl

Surfaces

Tracks Per Surface

1

77

2

80

DYNABYTE - Page 23


PARAMETER

Media

CHARACTERISTICS

5.25 diskette

Soft sectored

Single sided

5.25 diskette

Soft sectored

Double sided

Unformatted Capacity

Track

Surface

Total Capacity

Formatted Capacity

Sectors Per Track

Sector Size

Surface

Total Capacity

Transfer Rate

6250 bytes

480K bytes

480K bytes

32

128 bytes

315K bytes

315K bytes

250K bytes/sec

6250 bytes

500K bytes

1000K bytes

32

128 bytes

328K bytes

655K bytes

250K bytes/sec

Average Latency

Head Load

Access Time

Track to Track

Settling

Average Access

Track Density

100 msec o msec

3 msec

15 msec

85 msec

100 tpi

100 msec o msec

3 msec

15 msec

85 msec

100 tpi

Spindle Speed

Variation

Recording Density

Flux Density

Encoding Method

300 rpn

+

3%

5248 bpi

5248 frpi

MFM

Reliability Estimate

M'IBF

PM

MTrR

Error Rate

Soft Read Errors

Hard Read Errors

Seek Error

8500 hours

None

30 minutes

<1 x 10 .... 9 bits

<1 x 10 .... 12 bits

<1 x 10 .... 6 seeks

300 rpn

+

3%

5248 bpi

5248 frpi

MFM

8500 hours

None

30 minutes

<1 x 10 .... 9 bits

<1 x 10 .... 12 bits

<1 x 10"'6 seeks

404512

DYNABYTE - Page 24


PARAMETER

Media Life

Passes per track

Insertions

Winchester Disk Drive

CHARACTERISTICS

Greater than 3 x 10A6

Greater than 30,000

Surfaces

Tracks per Surface

Unformatted Capacity

Track

Surface

Total

Formatted Capacity

Sectors per Track

Sector Size

Track Capacity

Surface Capacity

Total Capacity

Transfer Rate

Average Latency

Access Time

5505-Al

4

153

10.4K bytes

1.6MB

6. 4MB

17

512 bytes

8704 bytes

1.33MB

5. 32MB

5 mbits/sec

8.3 msec

Track to Track

Settling

Average Access

Track Density

Spindle Speed

Recording Density

3 msec

15 msec

153 msec

254 tpi

3600 rpn

7690 bpi

Flux Density 7690 frpi

Encoding Method

Reliability Estimate

MTBF

PM

MTTR

MFM

8000 POH

None

30 minutes

1

Track to Track includes settling time.

IDDEL

5505-81

4

256

10.4K bytes

2. 67MB

10. 67MB

17

512 bytes

8704 bytes

2. 23MB

8.

9MB

5 mbits/sec

8.3 msec

20 msec o

1

105 msec

345 tpi

3600 rpn

8650 bpi

8650 frpi

MFM

8000 POH

None

30 minutes

DYNABYTE - Page 25

404512

5505-Cl

6

256

10.4K bytes

2. 67MB

16MB

17

512 bytes

8704 bytes

2.23M8

13.4MB

5 mbits/sec

8.3 msec

20 msec o

1

105 msec

345 tpi

3600 rpn

8650 bpi

8650 frpi

MFM

8000 POH

None

30 minutes


PARAMETER

Error Rate

Soft Read Errors

Hard Read Errors

Seek Errors

Power Supply Section

Type

Voltages

Adjustment

Rear Panel Section

08-25-S Connector

Positions

Diskette Storage

Connector

Convenience

Receptacle

Cooling

Operating temperature

Relative humidity

Line Voltage

Standard

Optional

Power

Dimension

Width

Depth

Height

Weight

<1 in 10

<1 in 10

<1 in 10

A

A

A

10 bits <1 in 10

12 bits <1 in 10

6 bits <1 in 10

A

A

A

10 bits

12 bits

6 bits

Phase-controlled regulator

+16 Vdc at 6 A

+8 Vdc at 20

A

+12 Vdc at 1.0

A,

1.3

A peak

+5 Vdc at

O.

5

A

1

16

50 conductor ribbon

Two-wire and grounded

70 CFM, one 4-5/8 inch axial fan

16 to 44 degrees Centigrade

20% to 80%

115 +10% Vac, 60 Hz

230 +10% Vac, 50 Hz

313

VA

CHARACTERISTICS

52.1 am (20.5 inches)

47.0 am (18.5 inches)

17.8 am (7.0 inches)

25.0 kg (55 1bs.)

NEMA

200

VA

404512

<1 in

<1 in

<1 in

10

10

10

A

A

A

10 bits

12 bits

6 bits rnaxirnun

DYNABYTE '- Page 26


404512

5. OPERATION AND INSTALIATION

Unpacking

5.01 After the 5505 Computer arrives, the shipping cartons should be examined for visible loss or damage.

IMPORTANT

Each unit's shipping carton should be retained for the warranty period and used for the return of equipment to

Dynabyte if it is necessary.

'.

5.02 Check each unit for concealed loss, damage or omissions in shipment.

IMPORTANT

Remove only the three center screws from each side of the cover.

Step

1

2

Procedure

If additional

I/O

Ports were ordered" install them as instructed in the manual supplied with the option.

Check the interior for loss or damage during shipment:

(1) Loose screws, nuts or washers

(2)

Broken wires or loose components

(3)

Major assemblies broken at mountings

IMPORTANT

The equipment is thoroughly tested, inspected and carefully packed before leaving the Dynabyte factory. Claims for loss or damage should be made uIXln the carrier NOT TO

DYNABYTE as follows:

(1) Visible Loss or Damage must be noted on the freight bill or express delivery sheet. The fonn required to file such a claim will be supplied by the carrier.

(2) Concealed Loss or Damage ~means loss or damage wich does not become apparent until-the equipment has been unpacked and placed in service. When the damage is

DYNABYTE - Page 27

5505 Technical Manual discovered upon unpacking, make· a written request for an inspection by the carrier's agent within fifteen days of the delivery date. Then file a claim with the carrier.

Obvious workmanship problems or incomplete shipments should be reported immediately to Dynabyte.

404512

Ac

Line

5.03 The 5505 Computer is wired and shipped from the factory for operation from a 115 V, 60 Hz ac line or 220 V, 50 Hz ac line. The ac line receptacle,

J6, is provided with a third wire bonded to the chassis.

IMPORTANT

Safe operation of Dynabyte equipment depends upon the user providing a two-wire, grounded, 115 Vac, 15

Amp service wall receptacle.

Select a wall receptacle which is not switched except for a circuit breaker.

Ideally no other equipment should be connected to the branch circuit.

The 5505 Computer chassis is wired at the factory for either 115 Vac, 60 Hz or 230 Vac, 50 Hz operation.

Conversion in the field for operation on the alternate voltage is not possible.

Options

5.04 The user should refer to the Dynabyte S-IOO Card Technical Manual for detailed infonmation for options to individual S-IOO cards and system components. Figures 5-2 through 5-4 will furnish the 5505 user with option settings necessary for a 5505 system to run diagnostic programs.

Set

Up and Turn

On

5.05 The following procedure will serve as a useful check list for setting up or resetting up the 5505 Computer. For illustration purposes, the system components are:

(1) Serial 1 Port is connected to the Serial Printer, 300 baud, and is the listing device (LST:).

(2) Serial 2 Port is connected to the Video Terminal, 9600 baud, and is the console device (CON:).

DYNABYTE - Page 28


(3) Dynabyte Disk Operating System Diskette.

404512

Set all ac line power switches to OFF.

5

6

Step

1

2

3

4

7

Procedure

Install the 5505 so as not to obstruct the air flow through the louvers in the bottom of the cabinet. Make certain there is a three-inch clearance from the rear of the fan. Dynabyte desk-type cabinets are designed to assure constant air flow through the equipment cabinets.

Check the option switch settings:

(1)

Each S-lOO Bus card. Refer to 5.04 above.

(2) Video Terminal. Refer to the Technical Manual.

(3) Serial Printer. Refer to the Technical Manual.

Connect to computer system cables:

(1) EIA cable between Port 1 and the Serial Printer.

(2) EIA cable between Port 2 and the Video Terminal.

Connect the ac line cords:

(1) Video Terminal ac line cord to the wall receptacle.

(2) Serial Printer ac line cord to the wall receptacle.

(3) 5505 ac line cord to the wall receptacle.

Open the diskette drive door.

Turn on the ac power switches:

(1) Video Terminal

(2) Serial Printer

(3) 5505 Computer

Verify the following:

(1) Power on indicators on all units are lit.

DYNABYTE - Page 29


8

404512

(2) Fan in the 5505 is running.

(3)

Disk Drive select lamp is flashing.

With Diskette label facing left and the slot horizontal, insert the System Diskette into the Diskette Drive. Close the door to the drive.

9

10

The Video Terminal should present the Dynabyte sign-on message.

Refer to the 5505 Computer Operation Manual.

IMPORTANT

Tighten the retaining screws on the not overtighten.

DB-2S-S connectors. Do

Always check that the drive does not already have a diskette installed before installing a diskette into a drive.

DYNABYTE

~

Page 30

1"0

OJ

\.Q

C1>

~ to

~

~ tz:l

I n

CD

::s rt t"1

Q.I

~ t"1

0

0

(l) en

..,.

~

W

..

§= rt

1-1

.a>

0

::s

..,.

rt

0

::r

~ rt

..,.

~ en

..,.

\Q

C t"1

CD

U1

I

~

NOTE: The dots on the switches indicate the direction in which the switch should be set for correct operation.

Strap Options - -...

"l

..,

CD

U'1

I l\)

I to

OJ lO

CD

~

5;

~ trl

W rv

?5' n

CD

en en

1'1

... f en

~

&'

8,

~

~

....

0

::s rt

::r

(J)

CD rt

....

~

en

NOTE:

The dots on the switches indicate the direction in which the switch should be set for correct operation. lJ1 lJ1 o lJ1

~

CD n

::T

..... n

01

......

~ c

......

Serial Number

Disk Clock

Option Strap

'-'l

,.,

CD

U1

I

W

~

5;

~ tzl

I

."

OJ

'-'l ft)

W

W en

~

9

:l r1' t1

0

.....

,.,

--

~

.....

0

:l i? r1' g. fC r1'

.....

~ en

NOTE: The dots on the switches indicate the direction in which the switch should be set for correct operation.

ROM Option Selection

Dynabyte Part No.

Mnemonic

5505 Model 5010 Model

808088

808089

808090

808091

808092

808093

UR10

UR11

UR12

UR13

UR14

UR15

5505-Al

5505-B1 or 5505-Cl

5505-Al

5505-Bl or 5505-Cl

5505-Al

5505-Bl or 5505-Cl

5010-01

5010-01

5010-01

5010-01

5010-02

5010-02

Dr ive Type

Shugart

Shugart

Remex

Remex

Remex or Shugart

Remex or Shugart

U1

U1 o

U1

.-3 ft) o

::T

::s

..... o

OJ

1-1 ffi=

~

OJ

1-1


M

CC

v

CC

C)..!!::

C

(.J

' - ro tea.. c

~

. - 0

~

.-

CI,) III

~

CI,)

cc

~

CI,)

.0

E

:::l

Z

0. o

III

III

CI,)

~

"tJ

"tJ

«

0ro

~ en c o

'.j:j ro

.~

~

Figure 5-4 -- Auxiliary Disk Controller, Option Switch Settings

DYNABYTE -

Page 34

404512


6. MAINTENANCE

6.01 The 5505 Computer is the result of several years of design, development and modern electronic manufacturing. The units are designed around the latest semiconductors and integrated circuits. They operate at relatively low power levels with adequate cooling. Each 5505 Computer is operated under power and functionally tested in the Dynabyte factory for a minimum of

72 hours before shipnent. The 5505 Computer can be expected to operate at peak performance for long intervals. No routine maintenance is required except occasional dusting and cleaning of the painted surfaces with a good all-purpose cleaner which does not attack or scratch painted surfaces or plastic.

Formula 409 All Purpose Cleaner

Distributed by Clorox Company

Oakland, CA 94612 available from most supermarkets is well suited for this application.

Custaner Support Service

6.02 Maintenance and procedures described in this manual should be performed in accordance with local instructions and the individual user's maintenance plan. Maintenance and repair of the 5505 Computer during the warranty period should be limited to:

(I) returning the 5505 Computer

(2) isolation of a fault to a specific pc assembly or unit

(3) replacement of the ac line fuse once.

Repacking and Returning Material

6.03 The Dynabyte Customer Support staff is available by telephone for assistance in troubleshooting and recommendations for repairs. If equipment is to be returned for repair or replacement, the following procedure will expedite repair and return of the equipment. All communications and material should be directed to:

Dynabyte, Inc.

Customer Support

521 Cottonwood Drive

M[lpitas, CA 93035

(408) 263-1221

TELEX 346-359

DYNABYTE - Page 35


Step Procedure

1

2

3

4

5

6

7

404512

Call Dynabyte Customer Support by telephone and provide the following infonnation:

(1) The nearest Dynabyte Authorized Service Center name and numbe r, if known.

(2) The Dynabyte Model Number and Serial Number of the equipnent. Figure 6-1 illustrates the Dynabyte Identification Plate for equipment. Nonnally this is located at the rear of the equipment.

If the fault has been traced to a specific subassembly, e.g., an

S-IOO Bus card, furnish the type, part number and serial number.

'Ibis infonnation is marked on the component side of the pc assembly.

(1) Subassembly replaced into the failed equipnent if one was available.

(2) Subassembly to be returned to Dynabyte.

Furnish a brief statement of the problem.

Customer Support will issue a Return Material Authorization Numbe r

(RMA

Number) •

(1) The RMA pennits the Dynabyte Customer Support staff to provide better coordination of returned material.

(2) The RMA pennits the Dynabyte customer to easily reference material returned to Dynabyte.

Package equipnent in the Dynabyte packing carton in which the equipment was received. If the original packing material is not available, Dynabyte Customer Support will provide infonnation and recommendations of material to be used.

Fill out and enclose a Dynabyte Repair Service Report with the equipment or provide the following infonnation in writing:

(1) The RMA number furnished by Dynabyte.

(2) The nearest Dynabyte Authorized Service Center.

(3) M:>del number and serial number of equipment. Refer to

Step 1 above.

(4) A brief statement of the problem.

Ship the equipnent to Dynabyte, shipment prepaid.

DYNABYTE - Page 36


NOTE

Material returned to Dynabyte without a Return Material

Authorization for repair will be refused by Dynabyte and returned to the sender.

404512

1

2

3

Key Function

1

2

3

4

5

Dynabyte Model Number.

Dynabyte Chassis Serial Number.

Dynabyte date of manufacture.

Ac line voltage which the chassis is wired for operation.

Ac line frequency which the chassis will operate.

Power dissipation of chassis. 6

Figure 6-1 -- Dynabyte Identification Plate

Diagnostics

6.04 A diagnostic program supplied on a diskette is available for the 5505

Computer from a Dynabyte Authorized Service Center. This program will verify that the 5505 works in general and the diskette and hard disk drives are functioning properly. The program diskette is supplied with a Dynabyte

Technical Manual describing the program operation in detail.

Fault Location

6.05

A troubleshooting chart has been included in this manual to assist the user in isolating a fault location to one of three areas. Refer to Table 6-1.

(1) The fault symptom resulted from incorrect user operation of the 5505

Computer.

(2)

The fault symptom resulted from some other piece of equipnent, e.g., cable, diskette storage, diskette or terminal.

DYNABYTE -

Page 37


404512

(3) The fault symptom resulted from a 5505 S-IOO card or power supply module.

Table 6-1 does not tabulate all the possible symptoms, only those Dynabyte

Customer Support has found most likely to occur. The diagnostic program, refer to 6.04 above, will also provide pointers for troubleshooting hardware malfunctions.

Power Supply Module Voltages and Adjustment

6.06 The procedure which follows will assist the user in checking and adjusting the power supply should it be necessary. The user will need a digital multimeter (DMM),e.g., Fluke 8020A or equal. Refer to Figure 6-2.

I 2 3 4 5 6 7

GND GND -16V +8V +5V +16V +12V

Terminal

Voltage Tolerance

Ac Line

6

7

4

5

1

3

115 Vac

+16 Vdc

+12 Vdc

+ 8 Vdc

+

5 Vdc o

Vdc

-16 Vdc

±10%

17 +3/-2 Vdc

12 +3/-2 Vdc

9 ±O.5 Vdc

5 ±O.25 Vdc

PS Common

Reference

-17 -3/+2 Vdc

Step

1

2

3

Figure 6-2 Power Supply Module Voltage Test Points, BSI

Procedure

Remove the top cover. Refer to 6.08 below.

Remove the power supply cover. Refer to 6.09, Steps 1 through

3.

The power supply voltages are distributed from barrier strip,

BSI.

DYNABYTE - Page 38


4

5

6

404512

Connect the DDM (-) lead to Terminal 1 and the

(+) lead to

Terminal 4. The voltage should be:

9

+

0.5 Vdc

If it is necessary to adjust the +8 Vdc supply to bring this into tolerance, adjust R2 on the Modulator PC Assembly.

Check that each of the other voltages tabulated in Figure 6-2 are in tolerance.

Removing Assemblies

6.07 The user will need the following hand tools to remove the major assemblies from the 5505 Computer chassis:

(1) 3/32 hex Allen wrench

(2) 11/32 socket wrench

(3) 1/4 socket wrench

(4) No. 2 Phillips head screwdriver

(5) No. 3 Phillips head screwdriver

6.08 Top Cover - The descriptions which follow view the 5505 Computer from the front. Perform the following:

Step Procedure

1

2

Remove the center three 3/32 hex head screws from each side of the top cover.

Remove the cover and place it in position so the woodgrain surface will not be marred during servicing.

WARNING

Hazardous

Disconnect assemblies. voltages are present inside the cabinet. ac power before removing the cabinet cover or

6.09 Power Supply Module - is located between the card cage and the rear panel. Perform the following:

DYNABYTE - Page 39


Step

1

2

3

4

5

6

7

8

Procedure

Disconnect the following cables:

(1) Port I/O Cable from the CPU.

(2) Disk Interface I/O Cable from the Controller.

Dress cables back over the rear panel.

404512

Remove the two 6-32 Kep nuts and flat washers from the left side of the black anodized power supply cover.

Remove the two 4-40 Kep nuts and flat washers from the right side of the power supply cover.

Remove the power supply cover.

Disconnect the Motherboard Power Cable.

(1) BSI - 1 BLK (2)

- 2 BLK (2)

- 3 VIO/WHT (1)

- 4 ORG/WHT (2)

- 5 ORG (3)

- 6 RED/WHT (1)

- 7 RED (2)

(2) 882 - 5 YEL (1)

Remove the four Phillips head 10-32 screws, star washers and flat washer Which secure the Power Supply Module to the cabinet base.

Shift the Power Supply Module slightly to gain access to the rear interior. Disconnect the ac line. This is two push-on connectors on the EMI line filter.

Remove the Power Supply Module from the 5505.

NOTE

Handle I/O cables with care as they can be easily damaged.

6.10 Cage -- S-IOO Motherboard - is located directly behind the front panel. The Motherboard Power Cable must be disconnected first. Repeat

6.09, Steps 1 through 5. Then perform the following:

DYNABYTE - Page 40


404512

Step

1

2

3

4

5

Procedure

Remove all the 8-100 cards installed in the card cage.

Disconnect the front panel cable connector from J14, the fourconductor pc-mounted receptacle.

Remove the fourteen 6-32 x 3/8 Phillips head screws and star washers which secure the 8-100 Motherboard PC Assembly to the cabinet base.

Remove the card cage from the 5505 Computer.

Remove the eight 6-32 x 3/8 Phillips head screws and star washers which secure the 8-100 Bus Motherboard PC Assembly to the card cage.

6.11 Front or Rear Panel - Both panels are secured to the cabinet bezel bY frve-6-32 Kep nuts. It is more convenient to entire bezel. Perform the following: respective remove the

Step

1

2

4

3

Procedure

Remove the two 3/32 hex head screws from each side.

Remove the five 8-32 x 3/4 Phillips head screws and star washers which secure the bezel to the cabinet base. Two of these screws also secure rubber bumpers.

Disconnect the electrical connections from the respective panel.

(1) Front Panel - Disconnect the ac line cable from the rear panel and the front panel cable connector from J14, the four-conductor pc mounted receptacle.

(2) Rear Panel - Disconnect the ac line cable to the front panel and the ac line cable to the power supply. This consists of two push-on connectors on the EMI line filter.

Remove the panel.

DYNABYTE - Page 41


No.

1

2

3

4

404512

Symptom

Table

6-1 -- Troubleshooting Chart

Probable Cause Remedy

POWER ON indicator does not light and fan is not running.

1. Power cord is not connected to the ac line.

2. The ac line fuse is blown.

1. Connect to the ac line.

2. Replace the fuse one time only. Then check the ac chassis wiring •

POWER ON indicator flickers.

POWER ON indicator is lit. RESET is pressed. The sign on message is not presented on the console. Drive

Select indicator does not light.

POWER ON indicator is lit. RESET is pressed. The sign on message is not presented on the console. Drive

Select indicator lights and heads load several times.

3. The power supply module is defective.

1. The powe r supply module is defective.

2. One of the S-lOO

Bus cards is defective.

1. System cables or or options are incorrect for the installation.

2. Power Supply module is defective.

3. Replace or repair~

Refer to Trouble 2 below.

1. Check all output voltages. Refer to

Figure 6-2. Replace or repair.

2. Remove one card at a time from the bus.

Moni tor the power supply output until the trouble clears. Replace or repair the card.

1. Check cables and and options.

2. Refer to Trouble 2 above.

1. System diskette is inserted incorrectly or is missing.

2. System diskette is· defective or has incorrect operating system for the installation.

1. Insert System diskette. Press RESET.

2. Insert a new System diskette.

3. Chassis connectors or wiring is defective.

3. Check. Refer to

Part 7 for diagram.

4. Power Supply module is defective.

4. Replace or repair.

Refer to Trouble 2 above.

DYNABYTE - Page 42


No.

5

6

7

8

9

404512

Symptom Probable Cause

5. Controller is defective.

Remedy


RESET button pressed. No sign on message is presented on the console. Drive Select indicator lights and the head loads once.

1.

Console is not configured to the system.

2.

System diskette has a defective operating system.

1.

Check console cabling to port, data communication controls, e.g., baud rate, parity, etc.

2. Insert a new systern diskette.

RESET is pressed.

HALT indicator remains lit.

6. Aux Controller is defective.

7. Diskette Drive is defective.

3.

CPU is defective.

1. CPU is defective.


7.

Refer to Trouble

7 below.



2. The phantom bootstrapping option jumper is not installed in the lowest addressed

RAM.

+his is appropriate to:

2. Install jumper.

Refer to the Technical

Manual.

16K Dynamic

16K Static

32K Static

Diskette drive is defective. Drive motor is not running.

3. RAM is defective.

Diskette drive is defective. The spindle is turning.

1. Internal drive troubles.

Diskette drive is defective. The spindle is not turning.

The drive motor is running.

1. Drive belt motor is off or broken.

2. Drive motor belt pulley is loose.

1. No power to the drive motor. Power

Supply module is defective.

2. Drive motor is defective.


1. Refer to the Technical Manual for the drive.

1. Reinstall or replace the belt.

2. Tighten.

1. Refer to Trouble 2 above.


DYNABYTE - Page 43


404512

7. REFERENCES

S-IOO Bus

7.01

Shortly after the introduction of the 8080, 8080A and Z-80

Microprocessor integrated circuits, several high-technology companies developed the 8-100 Bus structure for use in personal and business computer systems. The 8-100 Bus has been adapted by over 50 other manufacturers Who also offer products that connect to the bus. Table 7-1 tabulates the Dynabyte

S-IOO Bus pins by assignment and function in the 5505 Computer.

Schematics and Replaceable Parts

7.02 Figure 7-1 furnishes the chassis wiring for the 5505 chassis. Table 7-

2 tabulates replaceable parts for the 5505 Computer chassis covering.

(1) Front panel assembly

(2) Rea r panel assembly

(3) Frame assembly.

Schematics and replaceable parts lists for all other assemblies, modules and

PC' assemblies or S-100 cards are covered in the individual Dynabyte Technical

Manual. '

OD!

Equipnent

7.03 Physical and functional descriptions, maintenance information and replaceable parts list for the OEM equipment part of the 5505 Computer are provided under separate cover or may be ordered from:

MODEL

5505 - Al

5505 - Bl

5505 - Cl

Tandon Corporation

20320 Prairie Street

Chatsworth, CA 91311

(213) 993-6644

Computer Memories, Inc.

9233 Eton Avenue

Chats\\Orth, CA 91311

(213) 709-6445

DISKETTE

Tandon 'IMIOO - 3M

Tandon 'IM100 - 4M

Tandon 'IMIDO - 4M

WINCHESTER

Tandon TM602

CMI 5410

CMI 5616

DYNABYTE - Page 44


404512

Table 7-1 -- Dynabyte S-IOO Bus Pin Assignments

Pin

No.

1

Signal-Type

+8 Volts (B)

2

+16 Volts

(B)

3

XRDY (S)

4

5

6

7

8

9

VIO*

(S)

VIl* (S)

VI2*

(S)

VI3*

(S)

VI4*

(S)

VI5*

(S)

10

11

12

VI6* (S)

VI7*

(S)

NMI*

(S)

13 Dynabyte Reserved




1

7

Dynabyte Reserved

18

SDSB* (M)

19

CooB* (M)

Active

Level

H

Loe

Loe

Loe

Loe

Loe

Loe

Loe

Loe .

Loe

Description

Instantaneous minimum greater than 7

Volts, instantaneous maximum less than 25 Volts, average maximum less than 11 Volts.

Instantaneous minimum greater than

14.5 Volts, instantaneous maximum less than 35 Volts, average maximum less than 21.5 Volts.

One of tYA:> ready inp..1ts to the current bus master. The bus is ready when both these ready inputs are true. See pin 72.

Vectored interrupt line o.

Vectored interrupt line 1.







Nonmaskable interrupt.

Loe

Loe

The control signal to disable the 8 status signals.

The control signal to disable the 5 control output signals.

DYNABYTE - Page 45


Pin

No.

20

21

22

Table 7-1 -- Dynabyte S-IOO Bus Pin Assignments (Continued)

Active

Level Description Signal-Type

Dynabyte Reserved

Dynabyte Reserved

ADSB*

(M)

LOC

23 DODSB*

(M)

24

25

26

4 MHz Phase 2 (B)

Dynabyte Reserved pHLDA

(M)

LOC

H

The control signal to disable the

16 address signals.

The control signal to disable the

16 address signals.

The master timing signal for the bus

A control signal used in conjunction with HOLD* to coordinate bus master transfer operations.

27

34

35

36

28

29

30

31

32

33

37

38

39

40

41

Dynabyte Reserved

Dynabyte Reserved

A5 (M)

A4 (M)

A3 (M)

A15 (M)

A12 (M)

A9 (M)

DOl

(M)

DOO

(M)

AlO

(M)

D04 (M)

D05 (M)

D06 (M)

DI2 (S)

H

H

H

H

H

H

H

H

H

H

H

H

H

Address bit 5.

Address bit

Address bit

4.

3.

Address bit

15

(most significant).

Address bit 12.

Address bit 9.

Data out bit 1.

Data out bit O.

Address bit

10.

Data out bit 4.

Data out bit

Data out bit

5.

6.

Data in bit 2.

DYNABYTE - Page 46


Table 7-1 -- Dynabyte S-100 Bus Pin Assignments (Continued)

404512

Pin

No.

42

43

44

Signal-Type

Dr3 (8)

017 (8) sMl (M)

45 sOUT

(M)

46 sINP (M)

47 sMElt1R (M)

48 sHLTA (M)

49 CLOCK (8)

50

51

52

GND (B)

+8

Volts (8)

-16 Volts (8)

Active

Level

H

H

H

H

H

H

H

Description

Data in bit 3.

Data in bit 7.

The status signal Which indicates that the current cycle is an op-code fetch.

The status signal identifying the data transfer bus cycle to an output device.

The status signal identifying the data transfer bus cycle from an input device.

The status signal identifying bus cycles Which transfer data from memory to a bus master, which are not interrupt acknowledge instruction fetch cycle(s).

The status signal Which acknowledges that a HLT instruction has been executed.

2 MHz (0.5%) 40-60% duty cycle. Not required to be synchronous with any other bus signal.

Common with pin 100.

Common with pin 1.

Instantaneous maximum less than

-114.5 Volts, instantaneous minimum greater than -35 Volts, average minimum greater than -21.5 Volts.






DYNABYTE - Page 47


Table 7-1 -- Dynabyte S-lOO Bus Pin Assignments (Continued)

404512

Pin

No. Signal-Type








65 sMREQ* (M)

Active

Level

L

Description

66

67 sRFSH* (M)

PHANTOM*

68 MWRT (8)

L

LOC

H

The status signal identifying bus cycles which reference memory read, write or refresh.

The status signal identifying the current address on AO - A6 is a dynamic memory refresh address.

A bus signal which disables memory during disk controller ROM access.

A bus memory write signal. pWResOOT*

(logic equation). 'Ibis signal must follow pWR* by not more than 30 ns.




72

ROY (5)

73

INT* (5)

HOC

LOC

74

HOLD* (M)

75

RESET* (B)

LOC

LOC

See comments for pin 3.

The primary interrupt request bus signal.

The control signal used in conjunction with p~ master transfer operations.

Requests the reset of

all

bus master devices. Connects to the Front Panel

Reset Switch and activates

POe*.

DYNABYTE - Page 48

91

92

93

94

95

88

89

90

83

84

85

86

87

79

80

81

82

AO

(M)

Al

(M)

A2 (M)

A6

(M)

A7 (M)

A8

(M)

A13 (M)

A14 (M)

All (M)

002 (M)

003 (M)

007 (M)

DI4

(5)

DI5 (S)

DI6 (8)

DII (8)

DIO (8)

96 sINTA (M)


Table 7-1 -- Dynabyte S-IOO Bus Pin Assignments (Continued)

404512

Pin

No.

76 pSYNC (M)

77

78

Signal-Type pWR*

(M) pOOIN

(M)

Active

Level

Description

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

H

L

H

H

The control signal identifying the beginning of a processor cycle.

The control signal signifying the presence of valid data on

DO bus.

The control signal that requests data on the DI bus.

Address bit

0

(least significant).

Address bit 1.

Address bit 2.

Address bit

6.

Address bit 7.

Address bit 8.

Address bit

13.

Address bit 14.

Address bit 11.

Data out bit 2.

Data out bit 3.

Data out bit 7.

Data in bit 4.

Data in bit 5.

Data in bit 6.

Data in bit 1.

Data in bit 0 (least significant for

8-bit data).

The status signal identifying the bus input cycle(s) that may follow an accepted interrupt request presented on INT*.

DY.NABYTE - Page 49


404512

Table 7-1 -Dynabyte S-lOO Bus Pin Assignments (Continued)

Pin

No.

Signal-Type

Active

Level

Description

I

~------------------------~~-----+--------------------------------~

97 sWO* (M) L

The status signal identifying a bus cycle which transfers data from a bus master to a slave.


99

POC* (B) L

The Master Reset signal. '!he Power-

On-Clear signal for all devices.

When this signal goes low, it must stay low for at least 10 ms.

100 GND (B)

System ground and common to Pin 50.

NOTES:

(1.) Signal Type

(2. )

(B)

(M)

(S)

*

Bus

Bus Master

Bus Slave

Logical NOT

Active Level H

L

DC

High

Low

Open Collector

DYNABYTE - Page 50

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Reference

Table 7-2 -- 5505 Computer Replaceable Parts List

Description

Manufacturers Dynabyte

Manufacturer Part Number Part Number

COVER: TOP

PANEL: BOTTOM

DRIVE MOUNTING PLATE

BEZEL: CABINET

FOOT: RUBBER

ASM: 5505 FRONT PANEL

HARNESS: FRONT PANEL

SWITCH: ALTERNATE ACTION

SWI'JX!H: ALTERNATE ACTION

LAMP: 10V

DYNABYTE

DYNABYTE

DYNABYTE

DYNABYTE

DYNABYTE

700144

700036

720637

700054

700216

700144

700036

720637

700054

700216

DYNABYTE

DYNABYTE

CK

807129

800133

807129

800133

5101/W/BEZEL 711206

CK

5108/W/BEZEL

702700

PRECISION PL389 702717

ASM: REAR PANEL

FUSEHOLDER: JAG

FUSE: JAG 6A

FUSE: JAG 6A

FAN: 115 VAC

FAN: 230 VAC

GUARD: FAN

DYNABYTE 802470

LITTLEFUSE 348-8-7-1

LITTLEFUSE

312003

LITTLEFUSE 312006

IMC

ROTRON

IMC

HARNESS: REAR PANEL REV B DYNABYTE

CONNECTOR: IEC M 250V 6A

BELDEN

CONNECTOR: NEMA F 11SV 15A

HUBBELL

FASTENER: DB25 CONNECTOR

AMPHENOL

WS2107F-2

WRA31

005-009

804380

17252

5256

17893

MODULE: 5505 PCMER SUPPLY DYNABYTE

MODULE: DISKETTE DRIVE A

HARNESS: DISK DRIVE PCMER DYNABYTE

DISKETTE: 5.25" SOFT SECTOR

SINGLE-SIDED

DYSAN

DISKETTE: 5.25" SOFT SECTOR

OOUBLE-8IDED

807392

807354

800380

802470

700594

700198

700180

700504

714866

700522

804380

702880

702862

700630

807392

807354

800380

ASM: CARD CAGE 12 SLOT

ASM: S-100 CARD RETAINER

PCA: MOTHERBOARD

HARNESS: MOTHERBOARD

5505 CABLE ASSEMBLIES

CABLE: CPU I/O

CABLE: QUADRAPORT I/O

CABLE: OCTAPORT I/P

CABLE: WINI CGJT/SEP CARD

50 COO

CABLE: WINI DRlVE/SEP CARD

20 CON

DYNABYTE

DYNABYTE

DYNABYTE

DYNABYTE

DYNABYTE

DYNABYTE

DYNABYTE

DYNABYTE

DYNABYTE

800038

800152

800171

800209

800285

803705

803515

807335

807316

800038

800152

800171

800209

800285

803705

803515

807335

807316

DYNABYTE - Page 52


Table 7-2 -- 5505 Computer Replaceable Parts List (Continued)

404512

Reference Description

Manufacturers Dynabyte

Manufacturer Part Number Part Number

CABLE: WINI DRIVE/SEP CARD

34 CON

CABLE: FLOPPY MAIN/AUX/

REAR PANEL, 50 CON

CABLE: FLOPPY DRIVE/AUX

CARD 34 CON

HARNESS: Pa\'ER SUPPLY TO

AUX/WINI DRIVE

CORD: 115 VAC POWER

CORD: 230 VAC POWER

DYNABYTE

DYNABYTE

DYNABYTE

DYNABYTE

BELDEN

STORM

5505 S-100 CARDS

PCA: CPU

PCA: DYNAMIC RAM 64K

PCA: PCB, DATA SEP CARD

PCA: PCB, FLOPPY COOT AUX

DYNABYTE

DYNABYTE

DYNABYTE

CARD, 5505

PCA: FLOPPY CONT MAIN/PCA

wIO

ROM

PCA: FLOPPY CONT MAIN/pCA

DYNABYTE

DYNABYTE

W/ SS ROM, RBIO

PCA: FLOPPY CONT MAIN/PCA

DYNABYTE

W/ OS ROM, RB11 DYNABYTE

PCA: WINCHESTER CONT 5.25" DYNABYTE

PCA: INTERCONNECT

DYNABYTE

PCA: OCTAPORT DYNABYTE

PCA: OCTAPORT WITH TIMERS

DYNABYTE

PCA: QUAmAPORT DYNABYTE

PCA: QUADRAPORT WITH TIMERS DYNABYTE

5505 DISK DRIVES

DRIVE: 5.25" WINI, 5MB

DRIVE: 5.25" WIN I ,10MB

DRIVE: 5.25" WIN I , 16MB

DRIVE: 5.25" FLOPPY, OS

DRIVE: 5.25" FLOPPY, SS

5505 ROMS

TANDON

CMI

CMI

TANDON

TANDON

PROM, RB10, MODEL 5505-A

DYNABYTE

PROM, RBl1, MODEL 5505-B,-C DYNABYTE

PROM, RB12-RB15

(SEE FIG. 5-3)

807167

807658

807639

807167

807658

807639

'807354

17250

807354

700414

G2123-02M-GY 708100

803439

800589

807243

807506

807525

807544

807601

807677

803420

801995

801957

802014

801976

'IM602

CM5410

CM5615

'IM-100-4M

'IM-100-3M

807563

807582

720547

720565

719611

720583

720601

807563

807582

803439

800589

807243

807506

807525

807544

807601

807677

803420

801995

801957

802014

801976

DYNABYTE - Page 53


NOTES

404512

DYNABYTE - Page 54

Dilil

B., I E

Business Computers

Dynabyte 5505 Technical Manual

Computer Unit

Technical Manual

-----

·

Dilil

Business Computers

Related manuals

Harting

20 76 107 4200

Dynabyte

5100

Zenith

Z-100 Series

Alpha Micro

am-100