G486VPC
Rev. BA0+
System Board
User’s Manual
- 30061018 -
FCC Statement on Class B
This equipment has been tested and found to comply with the limits for
a Class B digital device, pursuant to Part 15 of the FCC rules. These
limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a residential installation.
This equipment generates, uses and can radiate radio frequency energy
and, if not installed and used in accordance with the instruction manual,
may cause harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment
off and on, the user is encouraged to try to correct the interference by
one or more of the following measures:
•
•
•
•
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and the receiver.
Connect the equipment into an outlet on a circuit different from that
to which the receiver is connected.
Consult the dealer or an experienced radio TV technician for help.
Notice:
1. The changes or modifications not expressly approved by the party
responsible for compliance could void the user's authority to operate the equipment.
2. Shielded interface cables must be used in order to comply with the
emission limits.
The manufacturer makes no warranties with respect to this documentation and disclaims any implied warranties of merchantability, quality, or
fitness for any particular purpose. The information in this document is
subject to change without notice. The manufacturer reserves the right to
make revisions to this publication and to make changes to any and/or
all parts of its content, at any time, without obligation to notify any person or entity of such changes. Further, the manufacturer assumes no
responsibility for any errors that may appear in this document.
Table of Contents
Chapter 1: Introduction ........................................................................... 5
Features and Specifications ............................................................... 6
Package Checklist .............................................................................. 8
Chapter 2: Hardware Installation ............................................................ 9
Preparing the Area ............................................................................. 9
Handling the System Board ................................................................ 9
Static Electricity Precautions ..................................................... 10
Installing the System Board .............................................................. 10
Board Layout .................................................................................... 12
System Memory ............................................................................... 13
Installing a SIM Module ............................................................. 13
Memory Configuration ...................................................................... 14
Cache Memory ................................................................................. 16
Jumper Settings for Cache Memory .......................................... 16
CPU Installation ................................................................................ 16
Jumper Settings for CPU ........................................................... 17
Installing Upgrade CPUs ............................................................ 21
Jumper Settings for PCI Slots ........................................................... 24
Jumper Settings for CMOS Clean .................................................... 25
Jumper Settings for EPROM Type .................................................... 25
Factory Testing Jumpers ................................................................... 26
Built-in Ports ..................................................................................... 27
Serial Ports ................................................................................ 27
PS/2 Mouse Port ........................................................................ 27
Parallel Port ............................................................................... 28
Floppy Disk Drive Controller ...................................................... 28
IDE Hard Disk Interface ............................................................. 28
Installing Expansion Cards. ....................................................... 31
Chapter 3: Software Installation ........................................................... 32
Award BIOS CMOS Setup Utility ...................................................... 32
Standard CMOS Setup .............................................................. 33
BIOS Features Setup ................................................................. 35
Chipset Features Setup ............................................................. 36
Power Management Setup ......................................................... 37
PCI Configuration Setup ............................................................ 38
Load BIOS Defaults ................................................................... 38
Load Setup Defaults .................................................................. 38
Supervisor Password ................................................................. 39
User Password ........................................................................... 40
IDE HDD Auto Detection ............................................................ 40
Save & Exit Setup ...................................................................... 43
Exit Without Saving .................................................................... 43
System Error Report ......................................................................... 44
Chapter 4: Troubleshooting Checklist ................................................. 47
Appendix A: Types of Modules ............................................................ 48
Appendix B: Memory and I/O Maps ..................................................... 49
Appendix C: PCI I/O Pin Assignments ................................................ 51
Appendix D: ISA I/O Pin Assignments ................................................ 52
Appendix E: System Overview ............................................................ 53
Appendix F: Connector Pin Assignments .......................................... 55
Appendix G: Award BIOS Hard Disk Table .......................................... 60
4
Chapter 1
Introduction
The G486VPC system board is an Energy Star compliant system board
that reduces energy consumption by automatically turning off peripherals when not in use.
The G486VPC system board is equipped with a 237-pin Zero Insertion
Force (ZIF) CPU socket that allows users to easily upgrade their processor with Intel, AMD, Cyrix or SGS-Thomson CPUs.
The G486VPC system board uses Award BIOS (Windows 95 Plug and
Play compatible) that supports Enhanced IDE HDDs larger than 528MB.
The G486VPC can support 1MB to 64MB of system memory using x32
or x36 DRAM. It also supports 128KB or 256KB Level 1 and Level 2
write-back/write-through cache.
Equipped with one built-in VL-bus IDE connector and one ISA IDE connector, the G486VPC system board can control four drives and supports fast Mode 3 and Mode 4 HDDs. This system board is also
equipped with two NS16C550A-compatible serial ports, an ECP/EPP
parallel port, a floppy disk drive controller, one PS/2 mouse port and
one AT or optional PS/2 keyboard connector.
The G486VPC design is based on the Peripheral Component Interconnect (PCI) local bus and Industry Standard Architecture (ISA) standards. It is equipped with 6 dedicated ISA slots, and 1 shared PCI/8-bit
ISA slot.
5
Features and Specifications
Processor
• 5V CPUs - Intel, Cyrix and SGS-Thomson
• 3.3V CPUs - Intel, AMD, Cyrix and SGS-Thomson
Chipset
• VIA VT82C496 - system and cache controller
• VIA VT82C505 - PCI bridge
• VIA VT82C416 - peripheral chip
Cache Memory
• 128KB or 256KB
• Supports Level 1 and Level 2 write-back/write-through cache
System Memory
• 1MB to 128MB
• Three 72-pin SIMM sockets
• Supports memory parity-check function
• 256KBx36/x32, 1MBx36/x32, 4MBx36/x32, and 16MBx36/x32 (SM1SM3)
• 512KBx36/x32, 2MBx36/x32, and 8MBx36/x32 (SM1 or SM3)
BIOS
• Award BIOS, Windows 95 Plug and Play compatible (Flash EPROM
or EPROM)
• Supports Enhanced IDE HDDs larger than 528MB
• System and EGA/VGA BIOS shadow
Energy Efficient Design
• Supports SMM mode and CPU stopped clock
• Hardware supports flexible event-driven power management
scheme and easy CPU state transition: Ready, Doze and Suspend
• Microsoft APM 1.1 compliant
• EPA Energy Star compliant design
6
Integrated I/O
• Uses UMC super I/O controller
• Two NS16C550A-compatible enhanced serial ports
• One ECP/EPP parallel port
• Supports 360KB, 720KB, 1.2MB, 1.44MB, and 2.88MB floppy
drives
• Two fast IDE connectors:
- Primary IDE is a VL-Bus IDE to support Mode 3 and Mode 4
HDDs
- Secondary IDE is an ISA IDE to support one tape drive and one
ATAPI CD-ROM drive
ZIF Socket
• 237-pin ZIF socket (Intel Socket 3)
Connectors
• 2 serial ports
• 1 parallel port
• 2 IDE connectors
• 1 floppy connector
• 1 PS/2 mouse port
• 1 AT keyboard connector or optional mini-DIN-6 PS/2 keyboard
port
Expansion Slots
• 6 dedicated 16-bit ISA slots
• 1 shared PCI/8-bit ISA slot
PCB
• Four layers, Baby AT form factor
• 25cm (9.84") x 22cm (8.66")
7
Package Checklist
The G486VPC package contains the following items:
•
•
•
•
•
•
The G486VPC system board
The G486VPC user’s manual
One 40-pin IDE hard disk cable
One 34-pin floppy disk drive cable
Serial, mouse and printer port cables
Option 1:
- One card-edge bracket with a 9-pin and 25-pin serial port cables
- One card-edge bracket with a 25-pin printer port cable and a PS/
2 mouse port cable
Option 2:
- One card-edge bracket with two 9-pin serial port cables and a
PS/2 mouse port cable
- One 25-pin printer port cable for chassis mounting
Option 3:
- One 25-pin printer port cable for chassis mounting
- Two 9-pin serial port cables for chassis mountign
- One PS/2 mouse port cable for chassis mounting
Five jumper caps
If any of these items are missing or damaged, please contact your
dealer or sales representative for assistance.
8
Chapter 2
Hardware Installation
This chapter summarizes the steps to install the G486VPC system
board into your system unit. It also includes a description of the area in
which you must work and directions for memory installation. Before installing the system board, obtain the memory you plan to install. Please
refer to the memory chart on pages 14 and 15 for the number and type
of SIM modules needed for the amount of memory you require.
Preparing the Area
Before unpacking the system board, make sure the location you have
selected is relatively free of dust and static electricity. Excessive exposure to dust, static electricity, direct sunlight, excessive humidity, extreme cold, and water can damage the operational capabilities of your
system board. Avoid placing the unit on surfaces such as carpeted
floors. These areas also attract static electricity which can damage
some circuits on your system board.
Make sure the power source has a properly grounded, three-pronged
socket. It is essential that the power connection be properly grounded
for correct functioning of your system board. For further protection, we
recommend that you use a surge suppressor. This will protect the system board from damage that may result from a power surge on the
electrical line.
Move items that generate magnetic fields away from your system board
since magnetic fields can also damage your system board. Once you
have selected the ideal location, unpack the G486VPC system board
carefully.
Handling the System Board
It is quite easy to inadvertently damage your system board even before
installing it in your system unit. Static electrical discharge can damage
computer components without causing any signs of physical damage.
You must take extra care in handling the system board to ensure
against electrostatic build-up.
9
Static Electricity Precautions
1. To prevent electrostatic build-up, leave the board in its anti-static
bag until you are ready to install it.
2. Wear an antistatic wrist strap.
3. Do all preparation work on a static-free surface with system board
components facing up.
4. Hold the system board only by its edges. Be careful not to touch
any of the components, contacts or connections, especially gold
contacts, on the board.
5. Avoid touching the pins or contacts on all modules and connectors.
Hold modules and connectors by their ends.
Warning:
Electrostatic discharge (ESD) can damage your processor, disk drives,
add-in boards, and other components. Perform the upgrade instruction
procedures described at an ESD workstation only. If such a station is
not available, you can provide some ESD protection by wearing an antistatic wrist strap and attaching it to a metal part of the system chassis.
If a wrist strap is unavailable, establish and maintain contact with the
system chassis throughout any procedures requiring ESD protection.
Installing the System Board
If you are installing the G486VPC system board, the following outlines
the basic installation steps. Before installing the system board into your
system unit, you should prepare the tools you will need.
You will need:
• One medium size, flat-bladed screwdriver
• One medium Phillips screwdriver
• One needle-nosed pliers
1. Unlock your system unit. Turn off the power and disconnect all
power cords and cables.
10
2. Remove the system unit cover. Refer to the manufacturer’s instructions if necessary.
3. Remove expansion cards seated in any of the expansion slots and
detach all connectors from the old system board.
4. Loosen the screws holding the original system board and remove
the board from the system. Save the screws.
5. Remove the G486VPC from its original packing box. Be careful to
avoid touching all connectors and pins on the board. Please refer to
the handling instructions on pages 9-10 for proper handling techniques.
6. Insert the SIMMs into the SIMM sockets on the G486VPC. The
quantity and location of the SIMMs depends on the memory configuration and type of modules you intend to use.
7. Install the CPU. Be sure pin 1 of the CPU is aligned with pin 1 of
the socket.
8. Set the corresponding jumpers.
9. Install the prepared G486VPC system board into the case and replace the screws.
10. Reinstall all cards and connectors and replace the system unit
cover. Reconnect all power cords and cables.
11
Board Layout
JP25
CN2
CN1
J12 J13
Power Connector
COM B
COM A
J11: FDC
J10: Printer
J8: Primary IDE
UMC
UM8669
J9: Secondary IDE
PCI Slot
8-bit ISA Slot
JP23
JP24
SM1 SM2 SM3
JP22
U17
JP21
VIA
VT82C416
VIA
VT82C505
JP19
VIA
VT82C496
JP17
JC1
JC2
JP18
Pin 1
JP13
JP11
JP20
JP16
JRN2
JP15
JP9
JP14
EPROM
JRN1
JP12
JP10
Battery
JP4
JP5
U7
JP6 JP7 JP8
J1 J2 JP1
Pin 1
12
U8
U9
U1
U2
JP3
J7
J3
J4
J5
J6
System Memory
The G486VPC system board can support 1MB to 128MB of memory
using 72-pin SIMMs (Single In-line Memory Module).
The G486VPC system board uses 256KBx36/x32, 1MBx36/x32,
4MBx36/x32, and 16MBx36/x32 HSIM modules installed in SM1-SM3
SIMM sockets or 512KBx36/x32, 2MBx36/x32, and 8MBx36/x32 installed in SM1 or SM3 SIMM sockets. You will need 1 to 3 pieces of
SIM modules, depending on the amount of memory you intend to install.
Refer to page 12 for the locations of the SIMM sockets.
Note:
The G486VPC system board supports fast page mode DRAM only.
Installing a SIM Module
A SIM module simply snaps into a socket on the system board. Pin 1 of
the SIM module must correspond with Pin 1 of the socket.
notch
key
1. Position the SIMM above the socket with the “notch” in the module
aligned with the “key” on the socket.
2. Seat the module at a 45° angle into the bank. Make sure it is completely seated. Tilt the module upright until it locks in place in the
socket.
13
Memory Configuration
The table below summarizes the bank locations and modules needed
for the corresponding memory sizes.
14
Memory Size
SM1
SM2
SM3
1MB
1M
—
—
2MB
1M
1M
—
3MB
1M
1M
1M
4MB
4M
—
—
5MB
4M
1M
—
6MB
4M
1M
1M
8MB
4M
4M
—
9MB
4M
4M
1M
12MB
4M
4M
4M
16MB
16M
—
—
17MB
16M
1M
—
18MB
16M
1M
1M
20MB
16M
4M
—
21MB
16M
4M
1M
24MB
16M
4M
4M
32MB
16M
16M
—
33MB
16M
16M
1M
36MB
16M
16M
4M
48MB
16M
16M
16M
64MB
64M
—
—
2MB
2M(D)
—
—
3MB
2M(D)
—
1M
4MB
2M(D)
—
2M(D)
6MB
2M(D)
—
4M
18MB
2M(D)
—
16M
8MB
8M(D)
—
—
9MB
8M(D)
—
1M
Memory Size
SM1
SM2
SM3
12MB
8M(D)
—
4M
16MB
8M(D)
—
8M(D)
24MB
8M(D)
—
16M
32MB
16M(D)
—
16M(D)
32MB
32M(D)
—
—
33MB
32M(D)
—
1M
34MB
32M(D)
—
2M(D)
36MB
32M(D)
—
4M
40MB
32M(D)
—
8M(D)
48MB
32M(D)
—
16M
64MB
32M(D)
—
32M(D)
65MB
64M
1M
—
68MB
64M
4M
—
69MB
64M
4M
1M
72MB
64M
4M
4M
80MB
64M
16M
—
81MB
64M
16M
1M
84MB
64M
16M
4M
128MB
64M
64M
—
128MB
64M
—
64M
72MB
8M(D)
—
64M
96MB
32M(D)
—
64M
(D) - Double Density
15
Cache Memory
The G486VPC system board can be configured to two different cache
sizes: 128KB and 256KB. Regardless of the amount of cache memory
installed, one 32Kx8 is needed for tag RAM (U7) to store the cacheable
addresses. Refer to page 12 for the locations of the SRAM sockets.
Jumper Settings for Cache Memory
Jumpers JP6-JP8
Cache Memory Selection
Cache Size
Data SRAM
Tag SRAM
(U1, U2, U8, & U9)
(U7)
256KB
128KB
64Kx8x4
32Kx8x4
3
2
1-2 On
1
JP6
JP8
2-3 On 1-2 On 2-3 On
1-2 On 2-3 On 1-2 On
32Kx8
32Kx8
3
JP7
2
1
2-3 On
CPU Installation
The G486VPC allows for easy installation of CPUs. Make sure all jumpers are set correctly before applying power or you may damage the
CPU or system board. Please see the jumper settings on the following
pages.
16
Jumper Settings for CPU
Jumpers JRN1, JRN2, JP16, JP18, JP20, JP22, and JP23
CPU Type
Jumpers JRN1 and JRN2
CPUs
Pin-out
JRN1
JRN2
Intel DX2, DX4, DX4 OverDrive,
Pentium OverDrive
AMD Standard, Enhanced, 5x86
Cyrix 5x86
SGS Thomson 5x86
1-2, 3-4, 5-6, 1-2, 3-4, 5-6,
7-8, 9-10 On 7-8, 9-10 Off
Cyrix DX2
SGS Thomson DX2
1-2, 3-4, 5-6, 1-2, 3-4, 5-6,
7-8, 9-10 Off 7-8, 9-10 On
Cyrix DX4
SGS Thomson DX4
Intel pin-out
1-2, 3-4, 5-6, 1-2, 3-4, 5-6,
7-8, 9-10 On 7-8, 9-10 Off
Cyrix DX4
SGS Thomson DX4
Cyrix pin-out
1-2, 3-4, 5-6, 1-2, 3-4, 5-6,
7-8, 9-10 Off 7-8, 9-10 On
Note:
Please check your CPU dealer or sales representative whether your
Cyrix DX4 or SGS Thomson DX4 CPU is designed in accordance to the
Intel pin-out or Cyrix pin-out.
10
1
1-2, 3-4, 5-6, 7-8, 9-10 On
10
1
1-2, 3-4, 5-6, 7-8, 9-10 Off
17
Jumper JP16
CPUs
JP16
Intel DX2, DX4, DX4 OverDrive,
Pentium OverDrive
AMD Standard, DX4 SV8B, 5x86-150
Cyrix DX2, DX4, 5x86
SGS Thomson DX2, DX4, 5x86
Off
AMD DX2 SV8B, 5x86-133/166
On
On
Off
Jumper JP18
CPUs
Intel DX2, DX4, DX4 OverDrive,
Pentium OverDrive
AMD Enhanced, DX4 NV8T, 5x86
Cyrix DX2, DX4, 5x86
SGS Thomson DX2, DX4, 5x86
Off
AMD DX2 NV8T
On
On
18
JP18
Off
Jumpers JP20 and JP23
CPUs
JP20
JP23
Intel DX2
1-2 On
Off
Intel DX4, DX4 OverDrive,
Pentium OverDrive
AMD Standard, Enhanced, 5x86
1-2 On
2-3 On
Cyrix DX2, DX4, 5x86
SGS Thomson DX2, DX4, 5x86
1-2 On
1-2 On
3
2
1
1-2 On
3
2
3
1
2-3 On
2
1
Off
Jumper JP22
CPUs
JP22
Intel DX2, DX4
AMD Standard, Enhanced, 5x86
Cyrix DX2, DX4, 5x86
SGS Thomson DX2, DX4, 5x86
1-2 On
Intel DX4 OverDrive, Pentium OverDrive
2-3 On
3
2
1-2 On
1
3
2
1
2-3 On
Note:
AMD Standard refers to 486DX2 NV8T and 486DX4 NV8T.
AMD Enhanced refers to 486DX2 SV8B and 486DX4 SV8B.
19
Jumpers JP9, JP10 and JP15
CPU Voltage Selection
CPU Voltage
5V
3.45V
3.6V
4V
3
2
JP9
JP10
JP15
1-2 On
2-3 On
2-3 On
2-3 On
1-2 On
1-2 On
3-4 On
5-6 On
1-2 On
2-3 On
2-3 On
2-3 On
1
3
JP9, JP15
1-2 On
2
1
JP9, JP15
2-3 On
6
5
6
5
6
5
4
3
4
3
4
3
2
1
2
1
2
1
JP10
1-2 On
JP10
3-4 On
JP10
5-6 On
Jumpers JP3-JP5
CPU External Clock Selection
JP3
2-3 On
1-2 On
2-3 On
25MHz
33MHz
40MHz
20
JP5
JP4
1-2 On
2-3 On
1-2 On
1
1
2
2
3
3
1-2 On
2-3 On
2-3 On
2-3 On
1-2 On
Installing Upgrade CPUs
The G486VPC is equipped with a 237-pin Zero Insertion Force (ZIF)
socket at location U17 of the system board. Refer to page 12 for the
location of the ZIF socket. This socket is designed for easy removal of
an old CPU and easy insertion of an upgrade CPU. The socket allows
you to carefully place the new CPU into its position. If you need to
apply excessive force to insert the CPU, you are not installing the CPU
correctly.
Warning:
Open the socket only if you are actually installing a CPU. The warranty
on the original CPU will be voided if the S/N seal is broken.
Before proceeding with the upgrade, take note of the following. The microprocessor and heat sink may be hot if the system has been running.
To avoid the possibility of a burn, power the system off and let the
processor and heat sink cool for 10 minutes.
The 237-pin ZIF socket consists of four rows of pin holes on each side.
To prevent improper installation, the ZIF socket has a Plug/Keying
mechanism. Several holes in the socket are plugged so that the CPU
will go in only one way. If you cannot easily insert the CPU, verify that
pin 1 of the CPU is aligned with pin 1 of the socket.
Warning:
Be extremely careful to match pin 1 of the CPU with pin 1 of the socket.
Usually pin 1 of the CPU is marked by a dot or a cut corner.
Pin 1
Zero Insertion Force (ZIF) Socket
21
To install an upgrade CPU, do the following.
1. Make sure the handle on the side of the ZIF socket is up. To raise
the handle, push it down, slightly pull it out to the side, then raise it
as far as it will go. It may be necessary to initially apply a small
amount of sideways force to free the handle from its retaining “tab.”
Once clear of the “tab,” the handle will open relatively easily. The
top plate will slide back. Do not use screwdrivers or other tools to
open the socket, or you may damage the system or socket.
Lifting the Handle
2. Once the lever is completely up, remove the old CPU carefully by
lifting it straight out of the socket. You are now ready to insert the
new CPU.
Pin 1
22
3. Position the CPU above the ZIF socket. Make sure pin 1 of the
CPU is aligned with pin 1 of the socket. Lower the chip until the
pins are inserted properly in their corresponding holes. Remember
that very little force is needed to install the CPU. If the CPU is not
easily inserted, verify whether or not pin 1 of the CPU is aligned
with pin 1 of the socket. Applying too much pressure can damage
the CPU or the socket.
Pin 1
Positioning the CPU Above the ZIF Socket
4. Push the handle down until the handle locks into place. The top
plate will slide forward. You will feel some resistance as the pressure starts to secure the CPU in the socket. This is normal and will
not damage the CPU. However, if the handle is not completely
closed, damage to the CPU and/or system board may result.
Clearance Requirements
Your CPU comes with a heat sink mounted on top. To maintain proper
airflow once the CPU is installed on the system board, the CPU and
heatsink require certain space clearances.
The clearance above the CPU’s fan/heat sink must be at least 0.4
inches. The clearance on at least 3 of 4 sides of the CPU must be at
least 0.2 inches. The cables (for floppy drive, hard drive, CD-ROM, etc.)
must be routed clear of the CPU and its airspace.
23
Fan Exhaust
The CPU must be kept cool by using a fan with heatsink. The temperature of the air entering the fan/heatsink cannot exceed 45°C (113°F).
The ambient or room temperature must be below 37°C (99°F).
In order to provide proper airflow to the CPU, all movable obstructions
(power supply cables, cards, floppy disk cables) must be clear of the
CPU fan/heatsink component in accordance with the space clearance
discussed in the Clearance Requirements section of this manual.
Jumper Settings for the PCI Slot
Jumpers JP13 and JP21
CPU External Clock Speed for the PCI Slot
Set Jumpers JP13 and JP21 according to the type of CPU installed on
the system board.
1
2
1
2
3
3
JP13: 1-2 On
JP21: 1-2 On
CPU external clock speed <= 33MHz
(Default)
1
2
1
2
3
3
JP13: 2-3 On
JP21: 2-3 On
CPU external clock speed = 40MHz
24
Jumper Settings for CMOS Clean
Jumper JC2
CMOS Clean Select
If, for some reason, the CMOS becomes corrupted, the system can be
reconfigured with the default values stored in the ROM BIOS. To load
the default values, switch off your computer and remove the cover.
Touch the power supply box to discharge any static electric buildup in
your body. Set JC2 pins 2 and 3 to On for approximately 5 seconds,
then return to the default position (pins 1 and 2 to On). Put the cover
back and power up your system.
3
3
2
2
1
1
1-2 On: Normal
(Default)
2-3 On: CMOS Clean
Jumper Settings for EPROM Type
Jumper JP19
EPROM Type Select
Jumper JP19 should be set to match the type of EPROM installed on
the system board. Refer to page 12 for the location of the EPROM
installed on your system board.
3
2
1
1-2 On: 12V Flash
EPROM 28F010
3
2
1
2-3 On: 5V Flash EPROM
29F010, Flash EPROM 29EE010
or EPROM 27C010
25
Jumper Settings for Lithium Battery
Jumper JC1
Lithium Battery
The G486VPC system board comes with a lithium battery. The default
setting of JC1 is 1-2 On for battery conservation during shipment of the
board. Before installing the system board onto your system unit, set JC1
to 2-3 On to use the lithium battery.
3
3
2
2
1
1
1-2 On: Default
2-3 On: Lithium battery
Factory Testing Jumpers
The following jumpers are for factory testing only and should always be
set to their default configurations. Reconfiguring these jumpers will
cause problems with your system board.
JP1: Off
JP11: 1-2 On
JP12: 1-2 On
JP14: 1-2 On
26
JP17: 1-2 On
JP24: Off
JP25: 1-2 On
Built-in Ports
The G486VPC system board is equipped with two serial ports, one parallel printer port, one FDD connector, two IDE hard disk shrouded headers and one PS/2 mouse connector. Refer to page 12 for the locations
of the built-in connectors and pin 1 of those connectors.
Serial Ports
The built-in serial ports are RS-232C asynchronous communication
ports with 16C550A-compatible UARTs that can be used with modems,
serial printers, remote display terminals, and other serial devices. They
use the following system I/O addresses:
Port Configuration
COM A
COM B
I/O Address
3F8h
2F8h
Connecting the Serial Ports
Two DB-9P serial port cables are provided with the system board. Attach one serial port cable to connector J12 for the COM A primary serial port and the other serial port cable to connector J13 for the COM B
secondary serial port. Make sure the colored stripes on the ribbon
cables are aligned with pin 1 of connectors J12 and J13. Use a small
nutdriver to mount the cable into a DB-9 cutout in the system chassis.
PS/2 Mouse Port
The PS/2 mouse port is a 6-pin connector on the system board. Attach
the 6-pin mouse port cable, which came with the G486VPC, to connector CN1. Make sure the red wire on the PS/2 mouse connector is
aligned with pin 1 of connector CN1.
27
Parallel Port
The G486VPC system board has a standard connector for interfacing
your PC to a parallel printer. The parallel port on your system board can
be set to any of the following system I/O addresses:
I/O Address: 3BC-3BE Hex
378-37A Hex (default)
278-27A Hex
Connecting the Parallel Printer Port
Attach the DB-25S printer port cable, which came with the system
board, to connector J10 on the G486VPC system board. Make sure the
colored stripe on the ribbon cable aligns with pin 1 of connector J10.
Use a small nutdriver to mount the cable into a DB-25 cutout in the
system chassis.
Floppy Disk Drive Controller
The G486VPC system board has a built-in floppy disk controller that
supports two standard floppy disk drives. You can install any 360KB,
720KB, 1.2MB, 1.44MB, or 2.88MB floppy disk drives.
Connecting the Floppy Disk Cable
1. Install the 34-pin header connector into the floppy disk connector
(J11) on the system board. The colored edge of the ribbon should
be aligned with pin 1 of connector J11.
2. Install the other 34-pin header connector(s) into the disk drive(s).
Align the colored edge of the daisy chained ribbon cable with pin 1
of the drive edge connector(s). The end-most connector should be
attached to the drive you want to designate as Drive A.
IDE Hard Disk Interface
The G486VPC system board is equipped with two VLB IDE shrouded
28
headers that will interface four Enhanced IDE (Integrated Drive Electronics) hard disk drives.
Note:
Only IDE hard drives or ATAPI CD-ROMs can be connected to the IDE
interface.
Connecting the IDE Hard Disk Interface
To prevent improper IDE cable installation, each PCI IDE shrouded
header has a keying mechanism. The 40-pin connector on the IDE
cable can be placed into the header only if pin 1 of the connector is
aligned with pin 1 of the header.
Header
Keying mechanism
Note:
The IDE cable with a standard 40-pin connector (without the keying
mechanism) can be installed in the PCI IDE shrouded header. Be extremely careful to match the colored edge of the ribbon with pin 1 of the
header.
Connecting the Hard Disk Cable
1. If you are connecting two hard drives, install the 40-pin connector of
the IDE cable into the primary IDE shrouded header (connector J8).
If you are adding a third or fourth IDE device, install the 40-pin
connector of the other IDE cable into the secondary IDE shrouded
header (connector J9).
29
2. Install the other 40-pin header connector(s) into the device with the
colored edge of the ribbon cable aligned with pin 1 of the drive
edge connector(s).
Note:
Refer to your disk drive user’s manual for information about selecting
proper drive switch settings.
Adding a Second IDE Hard Drive
When using two IDE drives, one must be set as the master and the
other as the slave. Follow the instructions provided by the drive manufacturer for setting the jumpers and/or switches on the drives. No
changes are needed on the G486VPC system board when adding a
second hard drive.
We recommend that the IDE hard drives be from the same manufacturer. In a few cases, drives from two different manufacturers will not
function properly when used together. The problem lies in the hard
drives, not the G486VPC system board.
Preparing an IDE Drive for Use
IDE disk drives are already low-level formatted, with any bad-track errors entered, when shipped by the drive manufacturer. Do not attempt
to do a low-level format or you may cause serious damage to the drive.
To use an IDE drive, you need to enter the drive type (this information
is provided by the drive manufacturer) into the system’s CMOS setup
table. Then run FDISK and FORMAT provided with DOS.
Warning:
Do not run FDISK and FORMAT programs on a drive that has already
been formatted or you will lose all programs and data stored on the
drive.
30
Installing Expansion Cards
The G486VPC system board is equipped with 6 dedicated 16-bit ISA
slots and 1 shared PCI/8-bit ISA slot. You can only install one card in
one or the other of the shared slots at a time; you cannot install devices
in both slots at the same time. Refer to page 12 for the locations of the
expansion slots.
Note:
The BIOS needs to be configured for the PCI add-in card installed in
the PCI slot. Refer to the “PCI Configuration Setup” presented in the
“Software Installation” section of the manual.
31
Chapter 3
Software Installation
After you power up your system, the BIOS message appears on your
screen and the memory count begins.
After the memory test, the following message will appear on the screen:
Press DEL to enter setup
If the message disappears before you respond, restart your system or
press the “Reset” button on the front of your computer. You may also
restart the system by pressing the <Ctrl> <Alt> and <Del> keys simultaneously. If you do not press these keys at the correct time and the
system does not boot, the following error message will appear:
Press Del to enter Setup
If you have set a password and selected “System” in the Security Option of the BIOS Features Setup menu, you will be prompted for the
password every time the system is rebooted or any time you try to enter
Setup. Type in the correct password and press <Enter>.
If you selected “Setup” in the Security Option, you will be prompted for
the password only when you try to enter Setup. Refer to the “BIOS
Features Setup” section for more information.
Award BIOS CMOS Setup Utility
Press <Ctrl> <Alt> <Esc> simultaneously or <Del> to enter the Setup
utility. A screen similar to the one on the next page will appear.
32
Use the arrow keys to highlight the option you want and press <Enter>.
The following describes each of these options.
Standard CMOS Setup
Use the arrow keys to highlight “Standard CMOS Setup” and press
<Enter>. A screen similar to the one below will appear.
Date and Time
This selection sets the time and date for the system. Press <F3> for the
calendar.
Hard Drive Type
This allows you to enter the appropriate specifications for the type of
hard disk drive(s) installed in your system. Under the “Type” category,
33
you can select Auto, User, one of 46 predefined drive specifications or
None.
Auto: This option indicates that the parameters for your hard disk
drive(s) will be automatically detected and displayed when you boot
your system. By default, the LBA mode is selected for a hard disk drive
larger than 528 megabytes. If you decide not to accept the LBA mode,
you can either specify your selection in the “IDE HDD Auto Detection”
menu, or use the User option described below.
User: This type is user definable and allows you to enter the specifications yourself directly from the keyboard. Six categories of information
are required: Size, Cylinders, Heads, Precomp, LandZone, Sectors and
Mode. This information should be provided by your hard disk vendor or
system manufacturer. However, we recommend you use the “IDE HDD
Auto Detection” which provides a more efficient way to setup your hard
drive.
46 Predefined Drive Specifications: The tables on pages 60 to 62 give
complete listings of the available drive types. Any given hard drive must
be set to one specific drive type number. Please refer to your hard disk
documentation for the appropriate type number.
None: If a hard drive is not installed, select <None> and press <Enter>.
Drive A and Drive B
These options are used to select the type of floppy disk drives installed
in your system. If neither drive is present, select “None”. Make sure you
choose the correct drive type; otherwise, your system might format the
device improperly.
Video
This is used to select the type of video adapter installed in your system.
Halt on
This category controls whether the system will halt in case an error is
detected during power up.
34
No Errors: The system boot will not stop for any detected errors.
All Errors: The system will stop whenever the BIOS detects a non-fatal
error.
All, But Keyboard: The system will stop for any error except a keyboard
error.
All, But Diskette: The system will stop for any error except a disk error.
All, But Disk/Key: The system will stop for any error except a keyboard
or disk error.
Memory
The lower right hand corner shows the base memory size, extended
memory size, and the other memory size of your system. You cannot
alter these items; your computer automatically detects and displays
them.
The Other Memory size refers to the memory located in the 640K to
1024K address space. This is the memory used for different applications. DOS uses this area to load device drivers to free base memory
for application programs.
When you are through making changes in the Standard CMOS Setup,
press <Esc> to return to the main menu.
BIOS Features Setup
Use the arrow keys to highlight “BIOS Features Setup” and press
<Enter>, a screen similar to the one on the next page will appear.
35
The Virus Warning option may be set to “Enabled” or “Disabled”. If enabled, the BIOS issues a warning when any program or virus sends a
Disk Format command or attempts to write to the boot sector of the
hard disk drive.
Note:
If you are installing or running certain operating systems such as Windows 95, please disable the Virus Warning or the operating system may
not install nor work.
If you choose “System” in the Security Option, you will be prompted for
a password every time you cold boot your system or access setup. If
you choose “Setup”, you will be prompted for a password only when
trying to access setup.
Use the arrow keys to move the highlight bar to the option you wish to
change or modify. Use the <Page Up>, <Page Down>, <+> or <-> keys
to make the corresponding changes. Press <Esc> after making the
changes to return to the main menu.
Chipset Features Setup
The G486VPC uses the VIA chipset. The Chipset Features Setup allows you to modify some functions to optimize system performance. If
you press <Enter>, a screen similar to the one on the next page will
appear.
36
Use the arrow keys to move the highlight bar to the option you wish to
change or modify. Use the <Page Up>, <Page Down>, <+> or <-> keys
to make the corresponding changes.
If the changes you made are incorrect or you change your mind, press
<F6> or <F7> to return to the default settings. Press <Esc> after making the changes to return to the main menu.
Power Management Setup
Use the arrow keys to highlight “Power Management Setup” and press
<Enter>. A screen similar to the one below will appear.
Choosing “Enabled” in the Power Management option will allow you to
set Sleep Timer, Sleep Mode, HDD Power Management and VGA Activity Wakeup. Choose “Disabled” if you do not want your system to enter
the power saving mode.
37
PCI Configuration Setup
Use the arrow keys to highlight “PCI Configuration Setup” and press
<Enter>; a screen similar to the one below will appear.
The G486VPC system board supports one PCI slot. This slot may be
assigned an INT value if the card installed in the slot requires an interrupt. The INT may then be assigned an IRQ value.
Load BIOS Defaults
The “Load BIOS Defaults” option loads the troubleshooting default values permanently stored in the ROM chips. These settings are not optimal and turn off all high performance features. You should use these
values only if you have hardware problems. Highlight this option on the
main menu and press <Enter>. The message below will appear.
Load BIOS Defaults (Y/N)? N
If you want to proceed, press <Y> and the default settings will be
loaded.
Load Setup Defaults
The “Load Setup Defaults” option loads optimized settings from the
BIOS ROM. Use the Setup default values as standard values for your
system.
38
Highlight this option on the main menu and press <Enter>. The message below will appear.
Load Setup Defaults (Y/N)? N
Type <Y> and press <Enter> to load the Setup default values.
Supervisor Password
If you want to protect your system and setup from unauthorized entry,
set a supervisor’s password with the “System” option selected in the
BIOS Features Setup.
If you want to protect access to setup only, but not your system, set a
supervisor’s password with the “Setup” option selected in the BIOS Features Setup. You will not be prompted for a password when you cold
boot the system.
Use the arrow keys to highlight the “Supervisor Password” option and
press <Enter>. The message below will appear.
Enter Password:
Type in the password. You are limited to eight characters. When done,
the message below will appear:
Confirm Password:
You are asked to verify the password. Type in exactly the same password. If you type in a wrong password, you will be prompted to enter
the correct password again.
To delete or disable the password function, highlight “Supervisor Password” and press <Enter>, instead of typing in a new password. Press
the <Esc> key to return to the main menu.
39
User Password
If you want another user to have access only to your system but not to
setup, set a user’s password with the “System” option selected in the
BIOS Features Setup.
If you want a user to enter a password when trying to access setup, set
a user’s password with the “Setup” option selected in the BIOS Features Setup. Using user’s password to enter Setup allows a user to
access only the “User Password” option that appears on the main
screen. Access to all other options is denied.
To set, confirm, verify, disable or delete a user’s password, follow the
procedures described in the section “Supervisor Password”. If you forget your password, refer to the procedure described in the same section.
IDE HDD Auto Detection
This option detects the hard disk parameters for the hard disk drives
installed in your system. Highlight this option and press <Enter>. A
screen similar to the one below will appear.
40
Enter your choice, and press <Enter> to accept the parameters or press
<Esc> to abort. The parameters of the hard disk will be displayed in the
Standard CMOS Setup.
Hard Drive Mode
The G486VPC supports three HDD modes: Normal, LBA and Large. If
your hard disk drive does not support LBA mode, the “LBA” option will
not be displayed. If your HDD has 1024 or fewer cylinders, the “Large”
option will not be displayed.
Normal Mode
The Normal mode is the generic access mode in which neither the
BIOS nor the IDE controller will make any transformations during harddrive access.
The maximum number of cylinders, heads and sectors for Normal mode
are 1024, 16 and 63, respectively.
no. Cylinders
x no. Heads
x no. Sectors
x bytes per sector
(1024)
( 16)
( 63)
( 512)
528 megabytes
If you set your HDD to Normal mode, the maximum accessible HDD
space will be 528 megabytes even though the physical size of the HDD
may be greater than that.
LBA (Logical Block Addressing) Mode
The LBA mode is a HDD accessing method to overcome the 528 megabytes limitation. The number of cylinders, heads and sectors shown on
the screen may not be the actual number for the HDD.
During the HDD accessing, the IDE controller will transform the logical
address described by the sector, head and cylinder number into its own
physical address inside the HDD.
41
The maximum HDD size supported by the LBA mode is 8.4 gigabytes. It
is obtained by the following formula.
no. Cylinders
x no. Heads
x no. Sectors
x bytes per sector
(1024)
( 225)
( 63)
( 512)
8.4 gigabytes
Large Mode
The Large mode is the extended HDD access mode supported by the
G486VPC system board. Some IDE HDDs have more than 1024 cylinders without LBA support (in some cases, you may not want the LBA
mode). This system board provides another alternative to support these
kinds of HDDs.
The BIOS tells the operating system that the number of cylinders is half
of the actual number and that the number of heads is double the actual
number. During disk access, the reverse conversion is done by the
INT13h routine.
Example of Large mode:
CYLS. HEADS
SECTORS MODE
1120
560
59
59
16
32
NORMAL
LARGE
Maximum HDD size:
no. Cylinders
x no. Heads
x no. Sectors
x bytes per sector
1 gigabyte
42
(1024)
( 32)
( 63)
( 512)
Note:
To support LBA or Large mode, address translation software is included
in the Award BIOS HDD Sevice Routine (INT13h). If you are running an
operating system that bypasses the BIOS Int13 Service Routine, LBA
and Large Mode may fail.
Save & Exit Setup
When all the changes have been made, highlight “Save & Exit Setup”
and press <Enter>. The message below will appear:
Save to CMOS and Exit (Y/N)? N
Type “Y” and press <Enter>. The following message will appear:
Reboot System (Y/N)? N
Type “Y” and press <Enter>. The modifications you have made will be
written into the CMOS memory, and the system will reboot. You will
once again see the initial diagnostics on the screen. If you wish to
make additional changes to the setup, press <Ctrl> <Alt> <Esc> simultaneously or <Del> after memory testing is done.
Exit Without Saving
When you do not want to save the changes you have made, highlight
the “Exit Without Saving” option and press <Enter>. The message below will appear:
Quit Without Saving (Y/N)? N
Type “Y” and press <Enter>. The system will reboot and you will once
again see the initial diagnostics on the screen. If you wish to make any
changes to the setup, press <Ctrl> <Alt> <Esc> simultaneously or
<Del> after memory testing is done.
43
System Error Report
When the BIOS encounters an error that requires the user to correct
something, either a beep code will sound or a message will be displayed in a box in the middle of the screen and the message PRESS
F1 TO CONTINUE, CTRL-ALT-ESC or DEL TO ENTER SETUP, will be
shown in the information box at the bottom. Enter Setup to correct the
error.
POST Beep
There is one beep code in the BIOS. This code indicates that a video
error has occurred and the BIOS cannot initialize the video screen to
display any additional information. This beep code consists of a single
long beep followed by two short beeps. If you get this error, contact
your system vendor.
Error Messages
One or more of the following messages may be displayed if the BIOS
detects an error during the POST.
DISK BOOT FAILURE, INSERT SYSTEM DISK AND PRESS ENTER
No boot device was found. Insert a system disk into Drive A and press
<Enter>. If the system normally boots from the hard drive, make sure
the controller is inserted correctly and all cables are properly attached.
Also be sure the disk is formatted as a boot device. Reboot the system.
DISKETTE DRIVES OR TYPES MISMATCH ERROR - RUN SETUP
The type of diskette drive installed in the system is different from the
CMOS definition. Run setup to reconfigure the drive type correctly.
DISPLAY SWITCH IS SET INCORRECTLY
The display switch on the system board can be set to either monochrome or color. This error indicates the switch is set to a different
setting than indicated in Setup. Determine which setting is correct and
either turn off the system and change the jumper or enter Setup and
change the VIDEO selection.
44
DISPLAY TYPE HAS CHANGED SINCE LAST BOOT
Since last powering off the system, the display adapter has been
changed. You must configure the system for the new display type.
ERROR ENCOUNTERED INITIALIZING HARD DRIVE
The hard drive cannot be initialized. Be sure the adapter is installed
correctly and all cables are correctly and firmly attached. Also, be sure
the correct hard drive type is selected in Setup.
ERROR INITIALIZING HARD DISK CONTROLLER
The system cannot initialize the controller. Make sure the card is correctly and firmly installed in the bus. Be sure the correct hard drive type
is selected in Setup. Also, check to see if any jumper needs to be set
correctly on the hard drive.
FLOPPY DISK CNTRLR ERROR OR NO CNTRLR PRESENT
The system cannot find or initialize the floppy drive controller. Make
sure the controller is installed correctly and firmly. If no floppy drive is
installed, be sure the Diskette Drive selection in Setup is set to NONE.
KEYBOARD ERROR OR NO KEYBOARD PRESENT
Cannot initialize the keyboard. Make sure the keyboard is attached correctly and no keys are being pressed during the boot.
If you are purposely configuring the system without a keyboard, set the
error halt condition in Setup to HALT ON ALL, BUT KEYBOARD. This
will cause the BIOS to ignore the missing keyboard and continue the
boot.
MEMORY ADDRESS ERROR AT...
Indicates a memory address error at a specific location. You can use
this location along with the memory map for your system to find and
replace the bad memory chips.
MEMORY SIZE HAS CHANGED SINCE LAST BOOT
Memory has been added or removed since the last boot. Enter Setup
and enter the new memory size in the memory fields.
MEMORY VERIFY ERROR AT...
Indicates an error verifying a value already written to memory. Use the
location along with your system’s memory map to locate the bad chip.
45
OFFENDING ADDRESS NOT FOUND
This message is used in conjunction with the I/O CHANNEL CHECK
and RAM PARITY ERROR messages when the segment that has
caused the problem cannot be isolated.
OFFENDING SEGMENT
This message is used in conjunction with the I/O CHANNEL CHECK
and RAM PARITY ERROR messages when the segment that has
caused the problem has been isolated.
PRESS A KEY TO REBOOT
This will be displayed at the bottom screen when an error occurs that
requires a reboot. Press any key and the system will reboot.
PRESS F1 TO DISABLE NMI, F2 TO REBOOT
When BIOS detects a Non-Maskable Interrupt condition during boot,
this will allow NMI to be disabled and continue to boot. You can also
reboot the system with the NMI enabled.
SYSTEM HALTED, (CTRL-ALT-DEL) TO REBOOT...
Indicates the present boot attempt has been aborted and the system
must be rebooted. Press and hold down the CTRL, ALT and DEL keys
simultaneously.
46
Chapter 4
Troubleshooting Checklist
If you experience difficulty with the G486VPC system board, please refer to the checklist below. If you still cannot identify the problem, please
contact your dealer.
1. Check the jumper settings to ensure that the jumpers are properly
set. If in doubt, refer to the “Hardware Installation” section.
2. Verify that all SIMMs are seated securely into the SIMM sockets.
3. Make sure the SIMMs are in the correct locations.
4. Check that all populated memory banks are filled with correctly
sized SIMMs.
5. If your board fails to function, place the board on a flat surface and
seat all socketed components (gently press each component into
the socket).
6. If you made changes to the BIOS settings, re-enter setup and
load the BIOS defaults.
47
Appendix A
Types of Modules
The G486VPC system board supports 1MB to 64MB of memory using
72-pin SIMMs. The following modules have been tested with this board.
Most untested brands will work but a few may fail to do so.
48
SIMM
Brand
Chip Number
256KBx36
OKI
M514256B-70J
512KBx36
OKI
M514256B-70J
1MBx36
Fujitsu
Toshiba
OKI
814400A-70
TC514400ASJL-70
M514400A-70
2MBx36
Mitsubishi
M5M44400BJ-7S
4MBx36
Fujitsu
Mitsubishi
OKI
814100A-70
M5M417400BJ-7
M514100B-70S
Appendix B
Memory and I/O Maps
Memory Address Map
Address
Name
Function
0000000 to
009FFFF
640KB System
Board RAM
System Board Memory
00A0000 to
00BFFFF
128KB Video
Display Memory
Reserved for Graphics
Display Memory
00C0000 to
00E7FFF
160KB I/O
Expansion ROM
Reserved for ROM on
I/O Adapter Card
00E8000 to
00FFFFF
96KB ROM on
the System Board
System Board BIOS
0100000 to
3FFFFFF
Maximum
Memory 64MB
System Board Memory
49
I/O Address Map
I/O Address
000-01F
020-03F
040-05F
060-06F
070-07F
080-09F
0A0-08F
0C0-0DF
0E8
0F0
0F1
0F8-0FF
1F0-1F8
200-207
278-27F
2F8-2FF
300-31F
360-36F
378-37F
380-38F
3A0-3AF
3B0-3BF
3C0-3CF
3D0-3DF
3F0-3F7
3F8-3FF
Function
DMA Controller 1, 8237A-5
Interrupt Controller 1, 8259A, Master
Timer, 8254-2
8742 (Keyboard Controller)
Real-time Clock, NMI
(Non-maskable Interrupt) Mask
DMA Page Memory, 74LS612
Interrupt Controller 2, 8259A
DMA Controller 2, 8237A-5
Shadow RAM and Cache Control Bit
Clear Numeric Processor
Extension Busy
Reset Numeric Processor Extension
Numeric Processor Extension
Fixed Disk
Game I/O
Parallel Printer Port 2
Serial Port 2
Prototype Card
Reserved
Parallel Printer Port 1
SDLC, Bisynchronous 2
Bisynchronous 1
Monochrome Display and Printer Adapter
Reserved
Color/Graphics Monitor Adapter
Diskette Controller
Serial Port 1
Note:
The I/O address hex 000 to 0FF are reserved for the system board I/O.
Hex 100 to 3FF are available on the I/O channels.
50
Appendix C
PCI I/O Pin Assignments
B
-12V
TCK
Ground
TDO
+5V
+5V
INTB#
INTD#
PRSNT1#
Reserved
PRSNT2#
Ground
Ground
Reserved
Ground
CLK
Ground
REQ#
+5V (I/O)
AD[31]
AD[29]
Ground
AD[27]
AD[25]
N. C.
C/BE[3]#
AD[23]
Ground
AD[21]
AD[19]
N. C.
AD[17]
C/BE[2]#
Ground
IRDY#
N. C.
DEVSEL#
Ground
LOCK#
PERR#
N. C.
SERR#
N. C.
C/BE[1]#
AD[14]
Ground
AD[12]
AD[10]
Ground
- 01 - 02 - 03 - 04 - 05 - 06 - 07 - 08 - 09 - 10 - 11 - 12 - 13 - 14 - 15 - 16 - 17 - 18 - 19 - 20 - 21 - 22 - 23 - 24 - 25 - 26 - 27 - 28 - 29 - 30 - 31 - 32 - 33 - 34 - 35 - 36 - 37 - 38 - 39 - 40 - 41 - 42 - 43 - 44 - 45 - 46 - 47 - 48 - 49 -
A
Solder Side
TRST#
+12V
TMS
TDI
+5V
INTA#
INTC#
+5V
Reserved
+5V (I/O)
Reserved
Ground
Ground
Reserved
RST#
+5V (I/O)
GNT#
Ground
Reserved
AD[30]
N. C.
AD[28]
AD[26]
Ground
AD[24]
IDSEL
N. C.
AD[22]
AD[20]
Ground
AD[18]
AD[16]
N. C.
FRAME#
Ground
TRDY#
Ground
STOP#
N. C.
SDONE
SBO#
Ground
PAR
AD[15]
N. C.
AD[13]
AD[11]
Ground
AD[09]
AD[08]
AD[07]
N. C.
AD[05]
AD[03]
Ground
AD[01]
+5V (I/O)
ACK64#
+5V
+5V
- 52 - 53 - 54 - 55 - 56 - 57 - 58 - 59 - 60 - 61 - 62 -
C/BE[0]#
N. C.
AD[06]
AD[04]
Ground
AD[02]
AD[00]
+5V (I/O)
REQ64#
+5V
+5V
Component Side
51
Appendix D
ISA I/O Pin Assignments
B
Gnd
Reset Drv
+5V DC
IRQ9
-5V DC
DRQ2
-12V DC
OWS
+12V DC
Gnd
-SEMEMW
-SEMEMR
-IOW
-IOR
-Dack3
-DRQ3
-Dack1
DRQ1
-Refresh
CLK
IRQ7
IRQ6
IRQ5
IRQ4
IRQ3
-Dack2
T/C
Bale
+5V DC
OSC
Gnd
A
- 01 - 02 - 03 - 04 - 05 - 06 - 07 - 08 - 09 - 10 - 11 - 12 - 13 - 14 - 15 - 16 - 17 - 18 - 19 - 20 - 21 - 22 - 23 - 24 - 25 - 26 - 27 - 28 - 29 - 30 - 31 -
C
D
-Mem CS16
-I/O CS16
IRQ10
IRQ11
IRQ12
IRQ13
IRQ14
-Dack0
DRQ0
-Dack5
DRQ5
-Dack6
DRQ6
-Dack7
DRQ7
+5V DC
-Master
Gnd
52
-I/O Chck
SD7
SD6
SD5
SD4
SD3
SD2
SD1
SD0
-I/O Chrdy
AEN
SA19
SA18
SA17
SA16
SA15
SA14
SA13
SA12
SA11
SA10
SA9
SA8
SA7
SA6
SA5
SA4
SA3
SA2
SA1
SA0
- 01 - 02 - 03 - 04 - 05 - 06 - 07 - 08 - 09 - 10 - 11 - 12 - 13 - 14 - 15 - 16 - 17 - 18 -
SBHE
LA23
LA22
LA21
LA20
LA19
LA18
LA17
-Memr
-Memw
SD08
SD09
SD10
SD11
SD12
SD13
SD14
SD15
Appendix E
System Overview
DMA Controller 1
DMA Controller 2
Ch0-Reserved for User
Ch1-Reserved for User
Ch2-Diskette
Ch3-Reserved for User
Ch4-Cascade for CTRL 1
Ch5-Reserved for User
Ch6-Reserved for User
Ch7-Reserved for User
Note:
DMA controller 1 supports 8-bit data transfer.
DMA controller 2 supports 16-bit data transfer.
Address Generation for DMA Channels 3 to 0
Source
Address
DMA Page Memory
A23 ↔ A16
DMA Controller 1
A15 ↔ A0
Address Generation for DMA Channels 7 to 5
Source
Address
DMA Page Memory
A23 ↔ A17
DMA Controller 2
A16 ↔ A1
Page Memory Address
I/O Port Address
Page Memory
0081H
0082H
0083H
0087H
0089H
008AH
008BH
DMA Channel 2
DMA Channel 3
DMA Channel 1
DMA Channel 0
DMA Channel 6
DMA Channel 7
DMA Channel 5
53
System Interrupts
Interrupt Controller 1
Interrupt Controller 2
IRQ0-Timer Output (Out 0)
IRQ1-Keyboard (Output Buffer
Full)
IRQ2-Interrupt from INTR2
IRQ3-Serial Port 2
IRQ4-Serial Port 1
IRQ5-Parallel Port 2 or 3 *
IRQ6-Diskette Controller
IRQ7-Parallel Port 1 or 2 *
IRQ8-Realtime Clock INT
IRQ9-Software Redirected
to INT 0AH (IRQ2)
IRQ10-Reserved
IRQ11-Reserved
IRQ12-PS/2 Mouse
IRQ13-Coprocessor
IRQ14-Primary Fixed Disk
Controller (1F0)
IRQ15-Secondary Fixed Disk
Controller (170)
* The one on-board parallel port can be configured to either Parallel
Port 1, 2 or 3. Parallel Port 1 uses I/O address 3BCh, Parallel Port
2 uses I/O address 378h, and Parallel Port 3 uses I/O address 278H.
Note:
The 16 levels of system interrupts have the following priority: IRQ0>
IRQ1> IRQ8> IRQ9> IRQ10> IRQ11> IRQ12> IRQ13> IRQ14> IRQ15>
IRQ3> IRQ4> IRQ5> IRQ6> IRQ7.
System Timers
Channel 0
Channel 1
Channel 2
System Timer
(IRQ0)
Refresh Request Generator
(15µs Rate Generator Period
Signal)
Tone Generation for
Speaker
Real-Time Clock
Address
00
01
02
03
04
05
06
54
Function
Seconds
Second Alarm
Minutes
Minute Alarm
Hours
Hour Alarm
Day of Week
Address
07
08
09
0A
0B
0C
0D
Function
Date of Month
Month
Year
Register A
Register B
Register C
Register D
Appendix F
Connector Pin Assignments
Connector J1
Turbo LED Connector
Pin
1
2
Function
Signal
LED Power
Connector J2
Green LED Connector
Pin
1
2
Function
Signal
LED Power
Connector J3
Speaker Connector
Pin
Function
1
2
3
4
Signal
Reserved
Ground
+5V
Connector J4
Reset Switch Connector
Pin
1
2
Function
Ground
Reset
55
Connector J5
Keylock Connector
Function
Pin
LED Signal
Reserved
Ground
Keylock Signal
Ground
1
2
3
4
5
Connector J6
HD LED Connector
Function
Pin
Signal
LED Power
1
2
Connector J7
Turbo Switch Connector
Function
Pin
Turbo
GND
1
2
Connectors J8 and J9
Primary and Secondary IDE Hard Disk Drive Connectors
56
Pin
Function
1
2
3
4
5
6
7
8
9
10
11
12
-Reset
Ground
D7
D8
D6
D9
D5
D10
D4
D11
D3
D12
Pin
Function
13
14
15
16
17
18
19
20
21
22
23
24
D2
D13
D1
D14
D0
D15
Ground
Reserved
Reserved
Ground
-IOW
Ground
Pin
Function
Pin
Function
25
26
27
28
29
30
31
32
-IOR
Ground
Reserved
BALE
Reserved
Ground
IRQ
IOCS16
33
34
35
36
37
38
39
40
SA1
Reserved
SA0
SA2
HCS0
HCS1
LED
Ground
Pin
Function
Connector J10
Parallel Printer Port
Pin
Function
1
2
3
4
5
6
7
8
9
10
11
12
13
-Strobe
Data 0
Data 1
Data 2
Data 3
Data 4
Data 5
Data 6
Data 7
-Ack
Busy
Paper Empty
Select
14
15
16
17
18
19
20
21
22
23
24
25
-Autofd
-Error
-Init
-Slctin
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Connector J11
Floppy Disk Drive Connector
Pin
Function
Pin
Function
1
2
3
4
5
6
7
8
9
10
Ground
DENSEL
Ground
Reserved
Ground
Drate0
Ground
Index
Ground
MTR0
11
12
13
14
15
16
17
18
19
20
Ground
DR1
Ground
DR0
Ground
MTR1
Drate1
Dir
Ground
Step
57
Pin
Function
Pin
Function
21
22
23
24
25
26
27
Ground
Write Data
Ground
Write Gate
Ground
Track 0
MSEN
28
29
30
31
32
33
34
Wr Protect
Ground
Read Data
Ground
Head Select
Ground
Disk Change
Connector J12 and J13
COM A and COM B Serial Ports
Pin
Function
DCD (Data Carrier Detect)
RX (Receive Data)
TX (Transmit Data)
DTR (Data Terminal Ready)
Ground (Signal Ground)
DSR (Data Set Ready)
RTS (Request to Send)
CTS (Clear to Send)
RI (Ring Indicator)
1
2
3
4
5
6
7
8
9
Connector CN1
PS/2 Mouse Connector
Pin
1
2
3
4
5
6
58
Function
Mouse Data
Reserved
Ground
+5V
Mouse Clock
Reserved
Connector CN2
AT Keyboard Connector
Pin
1
2
3
4
5
Function
Keyboard Clock
Keyboard Data
Reserved
Ground
+5V
Connector PL1
Power Connector
Pin
Function
1
2
3
4
5
6
7
8
9
10
11
12
Power Good
+5V
+12V
-12V
Ground
Ground
Ground
Ground
-5V
+5V
+5V
+5V
59
Appendix G
Award BIOS Hard Disk Table
Type Size Cylinders Heads Sectors Write
Land
(MB)
Precomp Zone
Example
Model
1
10
306
4
17
128
305
TEAC SD510,
MMI 112, 5412
2
20
615
4
17
300
615
Seagate ST225,
ST4026
3
30
615
6
17
300
615
4
62
940
8
17
512
940
5
46
940
6
17
512
940
6
20
615
4
17
None
615
7
30
462
8
17
256
511
8
30
733
5
17
None
733
9
112
900
15
17
None
901
10
20
820
3
17
None
820
11
35
855
5
17
None
855
12
49
855
7
17
None
855
13
20
306
8
17
128
319
14
42
733
7
17
None
733
15
Tandon TM 703
Disctron 526,
MMI M125
(Reserved)
16
20
612
4
17
0
663
17
40
977
5
17
300
977
18
56
977
7
17
None
977
19
59
1024
7
17
512
1023
20
30
733
5
17
300
732
60
Seagate ST125,
Tandon TM262
Microscience HH725,
Syquest 3250, 3425
Type
Land
Write
Size Cylinders Heads Sectors
Precomp Zone
(MB)
Example
Model
21
42
733
7
17
300
732
22
30
306
5
17
300
733
23
10
977
4
17
0
336
24
40
1024
5
17
None
976
Seagate ST4051
25
76
1224
9
17
None
1023
Seagate ST4096
26
71
1224
7
17
None
1223
Maxtor 2085
27
111
1224
11
17
None
1223
Maxtor 2140,
Priam S14
28
152
1024
15
17
None
1223
Maxtor 2190,
Priam S19
29
68
1024
8
17
None
1023
Maxtor 1085,
Micropolis 1325
30
93
918
11
17
None
1023
Maxtor 1105
1120, 4780
31
83
925
11
17
None
1023
Maxtor 1170
32
69
1024
9
17
None
926
33
85
1024
10
17
None
1023
34
102
1024
12
17
None
1023
35
110
1024
13
17
None
1023
36
119
1024
14
17
None
1023
37
17
1024
2
17
None
1023
38
136
1024
16
17
None
1023
39
114
918
15
17
None
1023
40
40
820
6
17
None
820
Seagate ST251
41
42
1024
5
17
None
1023
Seagate 4053
Miniscribe 3053/
6053
Seagate ST4038
CDC 9415
Maxtor 1140,
4380
61
Land
Type Size Cylinders Heads Sectors Write
(MB)
Precomp Zone
Example
Model
42
65
1024
5
26
None
1023
Miniscribe 3053/
6053 RLL
43
40
809
6
17
None
852
Miniscribe 3650
44
61
809
6
26
None
852
Miniscribe 3675
RLL
45
100
776
8
33
None
775
Conner CP3104
46
203
684
16
38
None
685
Conner CP3204
47
62
(User Defined)
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