Gigabyte GA-586DX User Manual

GA - 586DX

USER'S MANUAL

Dual PENTIUM PCI - ISA BUS MAINBOARD

REV. 1 Third Edition

GA-586DX

The author assumes no responsibility for any errors or omissions which may
appear in this document nor does it make a commitment to update the
information contained herein.

IBM PC/AT, PC/XT are trademarks of International Business Machine
Corporation.
PENTIUM is a trademark of Intel Corporation.
AWARD is a trademark of Award Software, Inc.
MS-DOS WINDOWS NT are registered trademarks of Microsoft Corporation.
UNIX is a trademark of Bell Laboratories.

OCTOBER 01, 1996 Taipei, Taiwan

TABLE OF CONTENTS

2

Table of Contents

1. INTRODUCTION..................................................................................1-1

1.1. PREFACE.........................................................................................1-1

1.2. KEY FEATURES...............................................................................1-1

1.3. PERFORMANCE LIST.......................................................................1-2

1.4. BLOCK DIAGRAM .............................................................................1-3

1.5. INTRODUCE THE PCI - BUS.............................................................1-4

1.6. FEATURES.......................................................................................1-4

2. SPECIFICATION..................................................................................2-1

2.1. HARDWARE.....................................................................................2-1

2.2. SOFTWARE...................................................................................... 2-2

2.3. ENVIRONMENT................................................................................2-2

3. HARDWARE INSTALLATION...............................................................3-1

3.1. UNPACKING..................................................................................... 3-1

3.2. MAINBOARD LAYOUT......................................................................3-2

3.3. QUICK REFERENCE FOR JUMPERS & CONNECTORS...................3-2

3.4. DRAM INSTALLATION......................................................................3-4

3.5. CPU INSTALLATION AND JUMPERS SETUP...................................3-5

3.5.1 Uni-Processor Installation...........................................................3-5

3.5.2 Dual-Processor Installation.........................................................3-5

3.6. CMOS RTC & ISA CFG CMOS SRAM...............................................3-6

3.7. SPEAKER CONNECTOR INSTALLATION.........................................3-6

3.8. POWER LED & KEY LOCK CONNECTOR INSTALLATION ...............3-7

3.9. HARDWARE RESET SWITCH CONNECTOR INSTALLATION...........3-7

3.10. GREEN FUNCTION INSTALLATION ...............................................3-7

3.11. ATAPI DEVICE INSTALLATION.......................................................3-7

3.12. SCSI DEVICE INSTALLATION.........................................................3-7

3.13. PERIPHERAL DEVICE INSTALLATION........................................... 3-10

3.14. KEYBOARD & PS/2 MOUSE INSTALLATION..................................3-10

3.15. KEYBOARD SETTING FUNCTION..................................................3-10

4. BIOS CONFIGURATION......................................................................4-1

4.1. ENTERING SETUP...........................................................................4-1

4.2. CONTROL KEYS ..............................................................................4-2

3

GA-586DX

4.3. GETTING HELP................................................................................4-3

4.3.1. Main Menu..................................................................................4-3

4.3.2. Status Page Setup Menu / Option Page Setup Menu....................4-3

4.4. THE MAIN MENU.............................................................................. 4-3

4.5. STANDARD CMOS SETUP MENU....................................................4-5

4.6. BIOS FEATURES SETUP..................................................................4-9

4.7. CHIPSET FEATURES SETUP...........................................................4-13

4.8. POWER MANAGEMENT SETUP.......................................................4-14

4.9. PNP/PCI CONFIGURATION..............................................................4-16

4.10. INTEGRATED PERIPHERALS.........................................................4-17

4.11. LOAD SETUP DEFAULTS............................................................... 4-20

4.12. USER PASSWORD.........................................................................4-21

4.13. IDE HDD AUTO DETECTION..........................................................4-22

4.14. SAVE & EXIT SETUP......................................................................4-23

4.15. EXIT WITHOUT SAVING.................................................................4-24

5. AT TECHNICAL INFORMATION..........................................................5-1

5.1. I/O BUS CONNECTOR PIN OUT.......................................................5-1

5.1.1. ISA SLOT PIN OUT ....................................................................5-1

5.1.2. PCI - BUS SLOT PIN OUT..........................................................5-2

5.2. I/O & MEMORY MAP.........................................................................5-3

5.3. TIMER & DMA CHANNELS MAP.......................................................5-3

5.4. INTERRUPT MAP .............................................................................5-4

5.5. RTC & CMOS RAM MAP................................................................... 5-5

APPENDIX A: POST MESSAGE.................................................................A-1

APPENDIX B: POST CODES ......................................................................B-1

APPENDIX C: BIOS DEFAULT DRIVE TABLE............................................C-1

APPENDIX D: PROBLEM SHEET...............................................................D-1

4

Introduction

1. INTRODUCTION

1.1. PREFACE

Welcome to use the GA - 586DX motherboard. The motherboard is a 512 KB
cache Dual PENTIUM Processor based PC / AT compatible system with ISA

bus and PCI Local Bus, and has been designed to be the fastest PC / AT
system. There are some new features allow you to operate the system with just
the performance you want.

This manual also explains how to install the motherboard for operation, and
how to set up your CMOS CONFIGURATION with BIOS SETUP program.

1.2. KEY FEATURES

q Intel Dual Pentium
q Supports Pentium processor,PODP running at 75-200 MHz,



Processor based PC / AT compatible mainboard.

Cyrix 6x86, and AMD 5k86 Processor.

q 4 Master / Slave PCI Bus slots, 4 ISA Bus slots.
q Supports Dual 321 Pins (Socket 7) ZIF socket on board for Intel Processor,

and Dual POWER (2.8V/3.3V) Processor.

q Supports 512 KB Pipeline Burst Sync. 2nd Cache.
q CPU L1 / L2 Write-Back cache operation.
q Supports 8 - 512 MB DRAM memory on board.
q Supports Adaptec Ultra & Wide SCSI ports for 15 SCSI Device.
q Supports Adaptec RAID Port on board (Ver.3X and above version).
q Supports 2 channels Enhance PCI IDE ports for 4 IDE Device.
q Supports 2xCOM (16550), 1xLPT (EPP / ECP), 1x1.44MB Floppy port.
q Supports Green function, Plug & Play function.
q Licensed AWARD BIOS, FLASH EEPROM for BIOS update.
q BENCHMARQ3287 / DALLAS 12887 / ODIN 12C887 RTC on board.
q ATX form factor, 6 layers PCB.

1.3. PERFORMANCE LIST

1-1

GA-586DX

The following performance data list is the testing results of some popular
benchmark testing programs. These data are just referred by users, and there
is no responsibility for different testing data values gotten by users.
(The different Hardware & Software configuration will result in different
benchmark testing results.)

• CPU

Pentium processor 200 MHz

• DRAM 32 MB EDO

• CACHE SIZE 512 KB Pipeline Burst SRAM

• DISPLAY Matrox Millennium 2MB

• STORAGE Onboard IDE port + Quantum FB 1280AT IDE Dirve

Onboard SCSI port + Quantum XP 32150W SCSI Drive

• O.S. MS DOS V6.22

×DOSØ

Program Item Unit IDE SCSI
LandMark Speed CPU MHz 1157.16 1157.16

FPU MHz 3355.77 3355.80
V2.0 VIDEO chr/ms 16384 16384
Norton System Info. CPU Index 635.3 635.3
V8.0 Disk Index 22.1 16.6
Core Test DATA Transfer Rate KB/S 14992 17072

Sequential Read KB/S 6288 7168
V.3.02 Random Read KB/S 2432 2336
PC BenchMark DOS Mark Index 1321.61 1796.00

CPU Mark16 Index 406.19 406.55
V9.0 Video Score Index 6351.57 6368.49

Disk Score Index 673.64 1172.86

× WINDOWSØ− with Display Driver at 1024 x 768 x 256 colors x 70Hz

Program Item Unit IDE SCSI
Winbench 96 CPU Mark16 index 390 397

CPU Mark32 index 411 408
Disk Winmark95 KB/s 1370 1340
Graphics Winmark95 Mpixels/S 21.3 21.3

Winstone 96 Winstone96 Index 101.6 101.7

1-2

1.4. BLOCK DIAGRAM

Introduction

Host Bus

PCI Bus

Hard Disk

ISA Bus

Second Level

Cache

Cache

(SRAM)

Tag

Fast IDE

PIIX3CD ROM

Cntl

Tag Cntl
TIO[7:0]
TIO[10:8]

AIC-7880

Pentium Processor

R

3.3V

Addr
Data

TXC

ECC
Cntl

Control

Address/Data

Ultra SCSI

Ultra Wide SCSI

Adaptec RAID Port

Control

Address

Data

Main
Memory
(DRAM)

PCI

Device(s)

ISA

Device(s)

1.5. INTRODUCE THE PCI - BUS

1-3

GA-586DX

Connecting devices to a CPU local bus can dramatically increase the speed of
I/O-bound peripherals with only a slight increase in cost over traditional
systems.

This price / performance point has created a vast market potential for local bus
products.

The main barrier to this market has been the lack of an accepted standard for
local bus peripherals.

Many mainboard and chipset manufactures developed their own local bus
implementations, but they are incompatible with each other.

The VL (Video Electronics Standards Association) local bus and PCI
(Peripheral Component Interconnect) bus specification was created to end this
confusion.

The PCI - bus standard, under development since Jun. 1992, which is designed
to bring workstation-level performance to standard PC platform. The PCI - bus
removes many of the bottlenecks that have hampered PC for several years.

On the PCI - bus, peripherals operate at the native speed of the computer
system, thus enabling data transfer between peripherals and the system at
maximum speed.

This performance is critical for bandwidth-constrained devices such as video,
multimedia, mass storage, and networking adapters.

PCI - bus standard provides end-users with a low-cost, extendible and portable
local bus design, which will allow system and peripherals from different
manufactures to work together.

1.6. FEATURES

q 32 bits bus transfer mode.
q Bus Master or Slave access.
q Memory burst transfer to 132 MB/sec.
q 33 MHz operation speed.
q 10 device loading ability.
q CPU independent.

1-4

2. SPECIFICATION

2.1. HARDWARE

• CPU

• COPROCESSOR

• SPEED

• DRAM MEMORY

• CACHE MEMORY

• SCSI PORTS

• I/O BUS SLOTS

• IDE PORTS

− Pentium

− Pentium

− AMD5

− Two 321 pins (socket 7) ZIF white socket on board.

− 3.3V / 2.8V Dual Power Ready for P55C,Cyrix &

AMD processor.

− Included in Pentium.

− 50 / 55 / 60 / 66 MHz system speed.

− 25 / 27.5 / 30 / 33 PCI-Bus speed.

− 7.5 / 8 MHz AT bus speed.

− Hardware and Software speed switchable function.

− 2 banks 72 pins SIMM module socket on board.

− Use 4 / 8 / 16 / 32 / 64 /128 MB 60~70 ns SIMM

module DRAM.

− 8 ~ 512 MB DRAM size.

− Support Fast Page / EDO DRAM access mode.

− 16 KB cache memory included in Pentium.

− 512 KB Pipeline Burst 2nd cache.

− Support Write Back cache function for both CPU &

on board cache.

− Using Adaptec 7880 Ultra Wide chipset.

− Supports one SCSI-2 or SCSI-3 (Ultra) port.

− Support one Wide or Ultra Wide port.

− Support Adaptec RAID Port on board.

− 4 Master / Slave PCI-BUS.

− 4 16 bits ISA BUS.

− 2 Enhanced IDE channels on board.

(Using IRQ14,15)



processor 75 - 200 MHz, P55C (Dual).



OverDrive processor, (PODP).

86, Cyrix6x86 processor.

K

Specification

2-1

GA-586DX

− Support Mode 3,4 IDE & ATAPI CD - ROM.

• I/O PORTS

− Supports 2 16550 COM ports. (Using IRQ4, 3)

− Supports 1 EPP/ECP LPT port. (Using IRQ7 or 5

and DMA3 or 1)

− Supports 1 1.44MB Floppy port. (Using DMA2 &

IRQ6)

− Supports PS/2 Mouse. (Using IRQ12 )

− Supports PS/2 Keyboard.

• GREEN FUNCTION

• BIOS

• DIMENSION

− Standby & Suspend mode support.

− Green switch & LED support.

− IDE & Display power down support.

− Monitor all IRQ / DMA / Display / I/O events.

− 128KB FLASH EEPROM.

− Supports Plug & Play Function.

− ATX Form Factor, 6 layers PCB.

2.2. SOFTWARE

• BIOS − Licensed AWARD BIOS.

− AT CMOS Setup, BIOS / Chipset Setup, Green

Setup, Hard Disk Utility included.

• O.S.

− Operation with MS-DOS

WINDOWS NT, OS/2, NOVELL and SCO
UNIX.



, Windows95,

2.3. ENVIRONMENT

• Ambient Temp.

− 0°C to +50°C (Operating).

• Relative Hum. − 0 to +85% (Operating).

• Altitude − 0 to 10,000 feet (Operating).

• Vibration − 0 to 1,000 Hz.

• Electricity − 4.9 V to 5.2 V.

− 5 A to 7 A current.

2-2

Hardware Installation

3. HARDWARE INSTALLATION

3.1. UNPACKING

The mainboard package should contain the following:

• The GA - 586DX mainboard.

• USER'S MANUAL for mainboard & SCSI Driver Installation.

• Cable set for IDE, Floppy & SCSI device.

• Diskette for BUS MASTE IDE Driver & SCSI controller Drivers.

The mainboard contains sensitive electric components which can be easily
damaged by static electricity, so the mainboard should be left in its original
packing until it is installed.

Unpacking and installation should be done on a grounded anti-static mat. The
operator should be wearing an anti static wristband, grounded at the same
point as the anti-static mat.

Inspect the mainboard carton for obvious damage. Shipping and handling may
cause damage to your board. Be sure there are no shipping and handling
damages on the board before proceeding.

After opening the mainboard carton, extract the system board and place it only
on a grounded anti-static surface component side up. Again inspect the board
for damage. Press down on all of the socket IC's to make sure that they are
properly seated. Do this only on with the board placed on a firm flat surface.

M

DO NOT APPLY POWER TO THE BOARD IF IT HAS BEEN DAMAGED.

You are now ready to install your mainboard. The mounting hole pattern on the
mainboard matches the IBM-AT system board. It is assumed that the chassis
is designed for a standard IBM XT/AT mainboard mounting.

Place the chassis on the anti-static mat and remove the cover. Take the plastic
clips, Nylon stand-off and screws for mounting the system board, and keep
them separate.

3.2. MAINBOARD LAYOUT

3-1

GA-586DX

PCI3

COMB LPT Keyboard Mouse COMA

CN1

PCI1

CN6

CN2 CN3 CN4 CN5

POWER CONN. FLOPPY

1st CPU

Socket

U7

2nd CPU

Socket

U10

PCI4

AIC-7880

SCSI

ON

OFF

JP15

GA-586DX

J3 J4 J5 J6 J7 J8 J9

1 1 1 1

1

+ + +

PCI2

RAID
Port

1 234

S1

DIP SWITCH

CN10

CN11

DRAM
Bank0,1

WIDE SCSI

ULTRA SCSI

IDE 1st

IDE 2nd

+12V GND

1

J1:CPU FAN

+12V GND

1

J2:CPU FAN

CN8

CN9

×Figure 3.1Ø

3.3. QUICK REFERENCE FOR JUMPERS & CONNECTORS

t J1,2: CPU cooling FAN Power Connector

1 +12V
2 GND

t J3: SPEKER Connector

Pin No. Function

1 VCC
2 NC.
3 NC.
4 Output

t J4: RESET Switch (RST)

Pin No. Function

1 RESET Input
2 GND

t J5: POWER ON LED (PW-LED)

Pin No. Function

CN7

P.B.

SRAM

P.B.

SRAM

3-2

1 LED POWER (+)
2 NC
3 GND (-)

t J6: Hard Disk active LED

Pin No. Function

1 LED POWER (+)
2 LED POWER (-)
3 LED POWER (-)
4 LED POWER (+)

t J7: INFARED Connector (IR) -- Function Option

Pin No. Function

1 IR Data Output
2 GND
3 IR Data Input
4 NC
5 POWER (+)

t J8: GN-SW

Pin No. Function

Close Force system to enter Green Mode (Suspend mode).
Open Normal Operation.

t J9: GN-LED

Pin No. Function

1 LED anode (+).
2 LED cathode (-).

Hardware Installation

t S1: System Speed Selection

1 2 Function
ON ON For 50 MHz system speed ( CPU 75, 100(x2), PODP 125 MHz ).
ON OFF For 60 MHz system speed ( CPU 90, 120, 150, 180 MHz ).

OFF ON For 66 MHz system speed ( CPU 100, 133, 166, 200 MHz ).
OFF OFF For 55 MHz system speed ( CPU 110 MHz ).

t S1: CPU INT. / EXT. FREQ. RATIO

3 4
OFF OFF x 1.5
OFF ON x 2

ON ON x 2.5
ON OFF x 3

t JP15: Wide SCSI port High Byte Terminator ON/OFF

Pin No. Function

Open High Byte Terminator always Enable (ON).
Close High Byte Terminator ON/OFF control by software.

3-3

GA-586DX

t CN1-11 I/O Ports Connector

CN1 For Serial port2 (COM B).
CN2 For LPT port.
CN3 For Keyboard I/O port.
CN4 For PS/2 Mouse port.
CN5 For Serial port1(COM A).
CN6 USB port (option).
CN7 For Floppy port
CN8 For ULTRA WIDE SCSI port.

CN9 For ULTRA 8 bit SCSI port.
CN10 For Secondary IDE port.
CN11 For Primary IDE port.

t Power Connector

Pin No. Function

1 Power Good signal

2,10,11,12 VCC (+5V)

3 +12V
4 -12V

5,6,7,8 GND

9 -5V

t Adaptec RAID Port
The port is for Adaptec PCI RAID Port card ARO-113X, just Plug & Play will Enable

onboard SCSI controller to perform as SCSI RAID channels.

3.4. DRAM INSTALLATION

The mainboard can be installed with 4 / 8 / 16 / 32 / 64 / 128 MB 72 pins SIMM
module DRAM, and the DRAM speed must be 60 or 70 ns.

The DRAM memory system on mainboard consists of bank 0 & bank 1. Each
bank consist of 2 PCs 72 pins SIMM module DRAM.

Because the 72 pins SIMM module is 32 bits width, using 2 PCs which can
match a 64 bits system.

The total memory size is 8 - 512 MB, and various configuration of DRAM types
in the following TABLE are for reference:

Bank0 Bank1 Single: Single bank SIMM Module
Single None Ex. 4MB, 16MB, 64MB
Single Single
Single Double Double: Double banks SIMM Module
Double None Ex. 8MB, 32MB, 128MB

3-4

Hardware Installation

CLK.

Double Single
Double Double

The DRAM installation position refer to Figure 3.1, and notice the Pin 1 of
SIMM module must match with the Pin 1 of SIMM socket when the DRAM
SIMM module is installed.

Insert the DRAM SIMM module into the SIMM socket at 45 degree angle. If
there is a wrong direction of Pin 1, the DRAM SIMM module couldn't be
inserted into socket completely.

After completely insert SIMM module into socket, then press the SIMM module
in vertical direction until the left and right metal holders can keep the SIMM
module standing up con-firmly.

3.5. CPU INSTALLATION AND JUMPERS SETUP

3.5.1 Uni-Processor Installation

The system's speed depends on the frequency of CLOCK GENERATOR. The
user can change the DIP SWITCH (S1) selection to set up the system speed to
50 MHz, 55 MHz, 60 MHz or 66 MHz for 75 - 200 MHz processor.

The mainboard can use Intel Pentium Processor, P55C or PODP
( Pentium OverDrive Processor - P54CT, P54CTB), Cyrix 6x86 AND

AMD 5k86 processor.
The CPU speed must match with the frequency of CLOCK GEN. It will cause

system hanging up if the CLOCK GEN.'S frequency is higher than CPU's.
There are two CPU socket onboard, the user can install CPU to any one

socket, but 1st CPU socket is recommanded for one processor configuration.

3.5.2 Dual-Processor Installation

The mainboard provide Intel Multi-processor specification, so only Intel
Pentium Processor can be used when Dual Processor configuration is

achieved.
The two processor must used same speed and same type (Ex. P54C or

P55C).
CPU Installation Table:

DIP SWITCH (S1)

INT.CLK. CPU SPEED

EXT.

1 2 3 4 RATIO MHz MHz

ON ON OFF OFF 1.5 50 75 PENTIUM 75 MHz, AMD5K86-P75

ON OFF OFF OFF 1.5 60 90 PENTIUM 90 MHz, AMD5K86-P90/P120

3-5

GA-586DX

OFF ON OFF OFF 1.5 66 100

ON ON OFF ON 2 50 100 Cyrix 6X86-P120

OFF OFF OFF ON 2 55 110 Cyrix 6X86-P133

ON OFF OFF ON 2 60 120 PENTIUM 120 MHz, AMD5K86-P150, Cyrix 6X86-P150

OFF ON OFF ON 2 66 133

ON ON ON ON 2.5 50 125 Intel PODP 125MHz

ON OFF ON ON 2.5 60 150 PENTIUM 150 MHz

OFF ON ON ON 2.5 66 166 PENTIUM 166 MHz

ON OFF ON OFF 3 60 180 PENTIUM 180 MHz

OFF ON ON OFF 3 66 200 PENTIUM 200 MHz

M

The CPU is a sensitive electric component and it can be easily

PENTIUM 100 MHz, AMD5K86-P100/P133

PENTIUM 133 MHz, AMD5K86-P166, Cyrix 6X86-P166

damaged by static electricity, so users must keep it away from metal
surface when the CPU is installed onto mainboard.

3.6. CMOS RTC & ISA CFG CMOS SRAM

There're RTC & CMOS SRAM on board, they have a power supply from
internal battery to keep the DATA inviolate & effective.

The RTC is a REAL-TIME CLOCK device which provides the DATE & TIME to
system.

The CMOS SRAM is used for keeping the information of ISA device system
configuration, so the system can automatically boot OS. every time.

Due to the life-time of RTC internal battery is 5 years, the user can change a
new RTC to replace old one after it can not work.

The new one's brand and type must be same with old one.

3.7. SPEAKER CONNECTOR INSTALLATION

There is always a speaker in AT system for sound purpose. The 4 - Pins
connector J3 is used to connect speaker.

The speaker can work well in both direction of connector when it is installed to
the connector J3 on mainboard.

3.8. POWER LED & KEY LOCK CONNECTOR INSTALLATION

There are a system power LED lamp on the panel of case. The power LED will
light on when system is powered-on, which is connected to a 3 PIN connector.
The connector should be connected to J5 of mainboard in correct direction.

3.9. HARDWARE RESET SWITCH CONNECTOR INSTALLATION

3-6

Hardware Installation

The RESET switch on panel provides users with HARDWARE RESET function
which is almost the same as power-on/off. The system will do a cold start after
the RESET switch is pushed and released by user. The RESET switch is a 2
PIN connector and should be installed to J4 on mainboard.

3.10. GREEN FUNCTION INSTALLATION

For the purpose of power saving, there are two jumpers, J8 and J9, to make
sure the power saving function doing well. The J9 is a indicator (green LED)
for green function. If the green LED is ON, the system is operating in green
mode. The J8 is a switch to force the system get into green mode
immediately.

3.11. ATAPI DEVICE INSTALLATION

There are two Enhance PCI IDE ports (CN10,11) on board, which following
ATAPI standard SPEC. Any one IDE port can connecte to two ATAPI devices
(IDE Hard Disk, CD-ROM & Tape Driver), so total four ATAPI devices can exist
in a system.

The booting Hard Disk should be the Master device of 1st IDE channel.

3.12. SCSI DEVICE INSTALLATION

There are two SCSI ports on board, One is 8bit SCSI port for SCSI-2 or
ULTRA SCSI device, and total 7 8bit SCSI devices can exist in a system.

The other is 16bit SCSI port for wide or ULTRA Wide SCSI device, and total 15
SCSI devices (include 8bit SCSI device) can exist in a system.

The low byte Terminator (used for 8bit SCSI port) turning "ON" or "OFF" is
controled by software (SCSI BIOS SETUP Utility), and High byte Terminaator
(used for Wide SCSI port) turning ON or OFF can be controled by JP15 as
following:JP15 OPEN: High byte Terminator is always enable (ON)

JP15 CLOSE:High byte Terminator is controled by software SCSI

BIOS SETUP (same status as Low byte Terminator).

Terminator ON/OFF rules
CASE 1: High byte-ON (JP15 OPEN)

Low byte-ON (SCSI BIOS SETUP Enabled)

3-7

GA-586DX

1 System has 16 bit SCSI

Mainboard

Terminator ON Terminator OFF Terminator ON

2 System has only 8 bit SCSI device

Mainboard

Terminator ON Terminator OFF

3 System has EXT. SCSI port but has not INT. SCSI device

EXT. SCSI
Terminator

EXT.
SCSI
DEVICE

Terminator ON Terminator ON

16 bit 16 bit

SCSI DEVICE SCSI DEVICE

SCSI ID SCSI ID

No.15 No.0

8 bit 8 bit

SCSI DEVICE SCSI DEVICE

SCSI ID SCSI ID

No.6 No.0

EXT. 50pin or 68pin SCSI port

EXT. SCSI port

Terminator ON

Mainboard

CASE 2:High byte-ON(JP15 OPEN),
Low byte-OFF(SCSI BIOS SETUP Disabled)

1 System has 16 bit & 8 bit SCSI device

16 bit

SCSI DEVICE

16 bit

SCSI DEVICE

8 bit

SCSI DEVICE

SCSI DEVICE

8 bit

Mainboard

Terminator OFFTerminator ON

High byte Terminator ON
Low byte Terminator OFF

Terminator OFF Terminator ON

3-8

2 System has 8 bit EXT. SCSI port & 8 bit INT. SCSI device

SCSI-2
Terminator

EXT. 50pin SCSI port

Hardware Installation

8 bit

SCSI DEVICE SCSI DEVICE

SCSI ID SCSI ID

8 bit

EXT.
SCSI-2
DEVICE

Terminator ON Terminator OFF Terminator ON

3 System has 8 bit EXT. SCSI port & 16 bit INT. SCSI device

SCSI-2
Terminator

EXT.
SCSI-2
DEVICE

Terminator ON Terminator OFF Terminator ON

4 System has 16 bit EXT. SCSI port & 8 bit INT. SCSI device

WIDE SCSI
Terminator

EXT.
WIDE SCSI
DEVICE

Terminator ON Terminator OFF Terminator ON

EXT. 50pin SCSI port

EXT. 50pin SCSI port

Mainboard

High byte Terminator ON
Low byte Terminator OFF

Mainboard

High byte Terminator ON
Low byte Terminator OFF

Mainboard

High byte Terminator ON
Low byte Terminator OFF

No.6 No.0

16 bit

SCSI DEVICE SCSI DEVICE

SCSI ID SCSI ID

No.15 No.0

8 bit

SCSI DEVICE SCSI DEVICE

SCSI ID SCSI ID

No.6 No.0

16 bit

8 bit

CASE 3: High byte-OFF (JP15 CLOSE)

Low byte-OFF (SCSI BIOS SETUP Disabled)

1 System has 16 bit EXT. SCSI port & INT. 16 bit SCSI device

WIDE SCSI
Terminator

EXT. 68pin SCSI port

16 bit

SCSI DEVICE SCSI DEVICE

SCSI ID SCSI ID

16 bit

EXT.
WIDE SCSI
DEVICE

Terminator ON Terminator OFF Terminator ON

Mainboard

High byte Terminator OFF
Low byte Terminator OFF

No.15 No.0

3-9

GA-586DX

3.13. PERIPHERAL DEVICE INSTALLATION

After the I/O device installation and jumpers setup, the mainboard can be
mounted into the case and fixed by screw.

To complete the mainboard installation, the peripheral device could be
installed now.

The basic system needs a display interface card.
If the PCI - Bus device is to be installed in the system, any one of four PCI -

Bus slots can be used if Slave PCI - Bus device being installed; any one of tree
PCI-Bus slots (PCI1-PCI3) can be used if Bus Master PCI-Bus device being
installed (PCI4 slot can only support Slave PCI-Bus device due to onboard
SCSI controller using PCI4 slot's Master resource).

3.14. KEYBOARD & PS/2 MOUSE INSTALLATION

The main board supports PS/2 connector type keyboard & Mouse.
The BIOS will auto detect wheather the PS/2 Mouse is installed or nor &

assign IRQ12 for Mouse port if which was installed.
After installing the peripheral device, the user should check everything again,

and prepare to power-on the system.

3.15. KEYBOARD SETTING FUNCTION

After booting the O.S., there are some special functions used by keyboard as
follows:

"CTRL_ALT_DEL" − Pressing these keys simultaneously will cause

system to Warm Start (Software Reset).

3-10

BIOS Configuration

4. BIOS CONFIGURATION

Award's BIOS ROM has a built-in Setup program that allows users to modify
the basic system configuration.

This type of information is stored in battery-backed CMOS SRAM so that it
retains the Setup information when the power is turned off.

4.1. ENTERING SETUP

Power ON the computer and press <Del> immediately will allow you to enter
Setup.

The other way to enter Setup is to power on the computer, when the below
message appears briefly at the bottom of the screen during the POST
(Power On Self Test), press <Del> key or simultaneously press <Ctrl>, <Alt>,
and <Esc> keys.

Ÿ

TO ENTER SETUP BEFORE BOOT PRESS CTRL-ALT-ESC OR DEL KEY

If the message disappears before you respond and you still wish to enter
Setup, restart the system to try again by turning it OFF then ON or pressing the
"RESET" bottom on the system case.

You may also restart by simultaneously press <Ctrl>,<Alt>, and <Del> keys.

If you do not press the keys at the correct time and the system does not boot,
an error message will be displayed and you will again be asked to,

Ÿ

PRESS F1 TO CONTINUE, CTRL-ALT-ESC OR DEL TO ENTER SETUP

4-1

GA-586DX

4.2. CONTROL KEYS

Up arrow Move to previous item

Down arrow Move to next item

Left arrow Move to the item in the left hand

Right arrow Move to the item in the right hand

Esc key Main Menu - Quit and not save changes into CMOS

PgUp key Increase the numeric value or make changes

PgDn key Decrease the numeric value or make changes

F1 key General help, only for Status Page Setup Menu and Option Page

F2 key Change color from total 16 colors

F3 key Calendar, only for Status Page Setup Menu

F4 key Reserved

F5 key Restore the previous CMOS value from CMOS, only for Option Page

F6 key Load the default CMOS value from BIOS default table, only for Option

F7 key Load the default

F8 key Reserved

F9 key Reserved

Status Page Setup Menu and Option Page Setup Menu - Exit current
page and return to Main Menu

Setup Menu

Setup Menu

Page Setup Menu

F10 key Save all the CMOS changes, only for Main Menu

4-2

BIOS Configuration

4.3. GETTING HELP

4.3.1. Main Menu

The on-line description of the highlighted setup function is displayed at the
bottom of the screen.

4.3.2. Status Page Setup Menu / Option Page Setup Menu

Press F1 to pop up a small help window that describes the appropriate keys to
use and the possible selections for the highlighted item. To exit the Help
Window press <Esc>.

4.4. THE MAIN MENU

Once you enter Award BIOS CMOS Setup Utility, the Main Menu (Figure 4.1)
will appear on the screen. The Main Menu allows you to select from seven
setup functions and two exit choices. Use arrow keys to select among the
items and press <Enter> to accept or enter the sub-menu.

ROM PCI / ISA BIOS

CMOS SETUP UTILITY

AWARD SOFTWARE, INC.

STANDARD CMOS SETUP

BIOS FEATURES SETUP

CHIPSET FEATURES SETUP

POWER MANAGEMENT SETUP

PNP/PCI CONFIGURATION

INTEGRATED PERIPHERALS

LOAD SETUP DEFAULTS

ESC

: Quit

F10

: Save & Exit Setup (Shift)F2

Time, Date, Hard Disk Type, ...

Figure 4.1: Main Menu

• Standard CMOS setup

USER PASSWORD

IDE HDD AUTO DETECTION

SAVE & EXIT SETUP

EXIT WITHOUT SAVING

: Select Item
: Chang Color

4-3

GA-586DX

This setup page includes all the items in a standard compatible BIOS.

• BIOS features setup

This setup page includes all the items of Award special enhanced
features.

• Chipset features setup

This setup page includes all the items of chipset special features.

• Power management setup

This setup page includes all the items of Green function features.

• PNP/PCI configuration

This setup page includes all the configurations of PCI & PNP ISA
resources.

• Integrated peripherals

This setup page includes all onboard peripherals.

• Load setup defaults

BIOS defaults indicates the most appropriate value of the system
parameter which the system would be in safe configuration.

• User password

Change, set, or disable password. It allows you to limit access to the
system and Setup, or just to Setup.

• IDE HDD auto detection

Automatically configure hard disk parameter.

• Save & exit setup

Save CMOS value changes to CMOS and exit setup.

• Exit without save

Abandon all CMOS value changes and exit setup.

4.5. STANDARD CMOS SETUP MENU

The items in Standard CMOS Setup Menu (Figure 4.2) are divided into 9

4-4

BIOS Configuration

categories. Each category includes no, one or more than one setup items. Use
the arrows to highlight the item and then use the <PgUp> or <PgDn> keys to
select the value you want in each item.

ROM PCI / ISA BIOS

STANDARD CMOS SETUP

AWARD SOFTWARE, INC.

Date (mm:dd:yy)
Time (hh:mm:ss)

Primary
Primary
Secondary Master
Secondary

Driver A
Driver B
Floppy 3 Mode Support : Disabled

Video
Halt On : All Errors

ESCF1: Quit

: Help (Shift)F2

: Mon, Feb 7 1994
: 10 : 45 : 38

Master
Slave

Slave

: 1.44M , 3.5 inch.
: None

: EGA/VGA

: Auto
: None
: None
: None

HEAD PRECOMP LANDZ SECTOR

CYLSHARD DISKS TYPE MODE

SIZE

0
0
0
0

Extended Memory:

: Select Item

: Chang Color

000 0

Base Memory:

Other Memory:

Total Memory:

PU/PD/+/- : Modify

0
0000 0
0000 0
0000 0

640 K

15360 K

384 K

16384 K

Auto

Figure 4.2: Standard CMOS Setup Menu

• Date

The date format is <day>, <date> <month> <year>. Press <F3> to show
the calendar.

day The day, from Sun to Sat, determined by the BIOS and is

display-only
date The date, from 1 to 31 (or the maximum allowed in the month)
month The month, Jan. through Dec.
year The year, from 1900 through 2099

• Time

The time format in <hour> <minute> <second>.
The time is calculated base on the 24-hour military-time clock.

---------

---------

---------

4-5

GA-586DX

For example, 1 p.m. is 13:00:00.

• Primary HDDs / Secondary HDDs

The category identify the types of hard disk drive C drive F 4 devices that
has been installed in the computer.

There are 45 pre-defined types and a user definable type.
Type 1 to Type 45 are pre-defined.
Type User is user-definable and type Auto will automatically detect HDD's

type.
Press PgUp or PgDn to select a numbered hard disk type or type the

number and press <Enter>.
Note that the specifications of your drive must match with the drive table.
The hard disk will not work properly if you enter improper information for

this category.
If your hard disk drive type is not matched or listed, you can use Type

User to define your own drive type manually.
If you select Type User, related information is asked to be entered to the

following items.
Enter the information directly from the keyboard and press <Enter>.
Those information should be provided in the documentation form your

hard disk vendor or the system manufacturer.

CYLS. number of cylinders
HEADS number of heads
PRECOMP write precomp
LANDZONE landing zone
SECTORS number of sectors

If a hard disk has not been installed select NONE and press <Enter>.

• Drive A type / Drive B type

The category identify the types of floppy disk drive A or drive B that has
been installed in the computer.

None No floppy drive installed

4-6

BIOS Configuration

360K, 5.25 in. 5-1/4 inch PC-type standard drive; 360 kilobyte

capacity.

1.2M, 5.25 in. 5-1/4 inch AT-type high-density drive; 1.2 megabyte

capacity (3-1/2 inch when 3 Mode is Enabled).

720K, 3.5 in. 3-1/2 inch double-sided drive; 720 kilobyte capacity

1.44M, 3.5 in. 3-1/2 inch double-sided drive; 1.44 megabyte

capacity.

• Floppy 3 Mode Support (for Janpan Area)

Disable Normal Floppy Drive.
Drive A Drive A is 3 mode Floppy Drive.
Drive B Drive B is 3 mode Floppy Drive.
Both Drive A & B are 3 mode Floppy Drive.

• Video

The category detects the type of adapter used for the primary system
monitor that must matches your video display card and monitor.

Although secondary monitors are supported, you do not have to select the
type in setup.

EGA/VGA Enhanced Graphics Adapter/Video Graphics Array.

For EGA, VGA, SVGA, or PGA monitor adapters
CGA 40 Color Graphics Adapter, power up in 40 column mode
CGA 80 Color Graphics Adapter, power up in 80 column mode
MONO Monochrome adapter, includes high resolution

monochrome adapters

• Halt on

The category determines whether the computer will stop if an error is
detected during power up.

NO errors The system boot will not be stopped for any error

that may be detected

All errors Whenever the BIOS detects a non-fatal error the

4-7

GA-586DX

system will be stopped and you will be prompted

All,But Keyboard The system boot will not stop for a keyboard error;

it will stop for all other errors

All, But Diskette The system boot will not stop for a disk error; it will

stop for all other errors

All, But Disk/Key The system boot will not stop for a keyboard or

disk error; it will stop for all other errors

• Memory

The category is display-only which is determined by POST (Power On Self
Test) of the BIOS.

Base Memory

The POST of the BIOS will determine the amount of base (or
conventional) memory installed in the system.

The value of the base memory is typically 512 K for systems with
512 K memory installed on the motherboard, or 640 K for
systems with 640 K or more memory installed on the
motherboard.

Extended Memory

The BIOS determines how much extended memory is present
during the POST.

This is the amount of memory located above 1 MB in the CPU's
memory address map.

Expanded Memory

Expanded Memory in memory defined by the Lotus/Intel /
Microsoft (LIM) standard as EMS.

Many standard DOS applications can not utilize memory above
640 K, the Expanded Memory Specification (EMS) swaps
memory which not utilized by DOS with a section, or frame, so
these applications can access all of the system memory.

Memory can be swapped by EMS is usually 64 K within 1 MB or
memory above 1 MB, depends on the chipset design.

Expanded memory device driver is required to use memory as
Expanded Memory.

4-8

BIOS Configuration

Other Memory

This refers to the memory located in the 640 K to 1024 K address
space.

This is memory that can be used for different applications.
DOS uses this area to load device drivers to keep as much base

memory free for application programs. Most use for this area is
Shadow RAM.

4.6. BIOS FEATURES SETUP

ROM PCI / ISA BIOS

BIOS FEATURES SETUP

AWARD SOFTWARE, INC.

Virus Warning
CPU Internal Cache
External Cache
Quick Power On Self Test
Boot Sequence
Swap Floppy Drive : Disabled
Boot Up Floppy Seek
Boot Up NumLock Status
Typematic Rate Setting
Typematic Rate (Chars/Sec)
Typematic Delay (Msec)
Security Option
PCI/VGA Palette Snoop : Disabled
MP SPEC. For Single CPU : Enabled
OS Select For DRAM >64MB : Non-OS2

: Disabled
: Enabled
: Enabled
: Enabled
: A, C

: Enabled
: On
: Disabled
: 6
:250
: Setup

Video BIOS Shadow
C8000 - CBFFF Shadow
CC000 - CFFFF Shadow : Disabled

ESC

: Quit

F1

: Help

F5

: Old Values

F7 : Load Setup Defaults

PU/PD/+/­(Shift)F2

: Enabled
: Disabled

: DisabledD0000 - D3FFF Shadow
: DisabledD4000 - D7FFF Shadow
: DisabledD8000 - DBFFF Shadow
: DisabledDC000 - DFFFF Shadow

: Select Item
: Modify
: Color

Figure 4.3: BIOS Features Setup

• Virus Warning

This category flashes on the screen.
During and after the system boots up, any attempt to write to the boot

sector or partition table of the hard disk drive will halt the system and the
following error message will appear, in the mean time, you can run anti­virus program to locate the problem.

Default value is Disabled.

Enabled Activate automatically when the system boots up causing a

warning message to appear when anything attempts to

4-9

GA-586DX

access the boot sector or hard disk partition table

Disabled No warning message to appear when anything attempts to

access the boot sector or hard disk partition table

• CPU Internal Cache / External Cache

These two categories speed up memory access. However, it depends on
CPU / chipset design.

The default value is Enabled.

Enabled Enable cache
Disabled Disable cache

• Quick Power On Self Test

This category speeds up Power On Self Test (POST) after you power on
the computer. If it is set to Enable, BIOS will shorten or skip some check
items during POST.

The default value is Enabled.

Enabled Enable quick POST
Disabled Normal POST

• Boot Sequence

This category determines which drive computer searches first for the disk
operating system (i.e., DOS).

Default value is A,C.

A,C System will first search for floppy disk drive then hard disk drive
C,A System will first search for hard disk drive then floppy disk drive

• Swap Floppy Drive

The default value is Disabled.

Enabled Floppy A & B will be swapped under DOS
Disabled Floppy A & B will be normal definition

• Boot Up Floppy Seek

During POST, BIOS will determine if the floppy disk drive installed is 40 or
80 tracks. 360 K type is 40 tracks while 720 K, 1.2 M and 1.44 M are all 80
tracks.

The default value is Enabled.

4-10

BIOS Configuration

Enabled BIOS searches for floppy disk drive to determine if it is 40 or

80 tracks, Note that BIOS can not tell from 720 K, 1.2 M or

1.44 M drive type as they are all 80 tracks

Disabled BIOS will not search for the type of floppy disk drive by track

number. Note that there will not be any warning message if
the drive installed is 360 K

• Boot Up NumLock Status

The default value is On.

On Keypad is number keys
Off Keypad is arrow keys

• Typematic Rate Setting

The default value is Disabled.

Enabled Enable Keyboard typematic rate setting.
Disabled Disable Keyboard typematic rate setting.

• Typematic Rate (Chars/Sec)

The default value is 6.

6-30 Set the maximum typematic rate from 6 chars. per second

to 30 chars. per second.

• Typematic Delay (mSec)

The default value is 250.

250-1000 Set the time delay from first key to repeat the same key in

to computer.

• Security Option

This category allows you to limit access to the system and Setup, or just to
Setup.

The default value is Setup.

System The system will not boot and access to Setup will be denied

if the correct password is not entered at the prompt

Setup The system will boot, but access to Setup will be denied if

the correct password is not entered at the prompt

M

To disable security, select PASSWORD SETTING at Main Menu and
then you will be asked to enter password. Do not type anything and
just press <Enter>, it will disable security. Once the security is
disabled, the system will boot and you can enter Setup freely.

4-11

GA-586DX

• Video BIOS Shadow

It determines whether video BIOS will copied to RAM, however, it is
optional from chipset design. Video Shadow will increase the video speed.

The default value is Enable.

Enabled Video shadow is enabled
Disabled Video shadow is disabled

• PCI/VGA Palette Snoop

The default value are Disabled.

Enabled For having Video Card on ISA Bus and VGA Card on PCI

Bus.

Disabled For VGA Card only.

• MP SPEC. Fpr Single CPU

The default value are Enabled.

Enabled The BIOS will Enabled Intel MP SPEC. for O.S. which

support Intel MP SPEC. system if only one processor is
installed.

Disabled The BIOS will report standard AT system to O.S. if only one

processor is installed. If two processor are installed, the
BIOS always report MP SPEC. to O.S..

NOTE: Under some O.S. with standard AT system, the performance is better

than the same O.S. with MP SPEC. system.

• OS Select For DRAM>64MB

The default value is Non-OS2.

Non-OS2 Using non-OS2 operating system.
OS2 Using OS2 operating system and DRAM>64MB.

• C8000 - CFFFF Shadow / D0000 - DFFFF Shadow

These categories determine whether optional ROM will be copied to RAM
by 16 K byte.

The default value are Disabled.

Enabled Optional shadow is enabled
Disabled Optional shadow is disabled

4.7. CHIPSET FEATURES SETUP

4-12

: 60-70nsAuto Configuration

Memory Hole At 15M-16M : Disabled
DRAM ECC/PARITY select : ECC
Memory Parity/ECC Check

: Disabled

BIOS Configuration

ROM PCI / ISA BIOS

CHIPSET FEATURES SETUP

AWARD SOFTWARE, INC.

: Quit

F1

: Help

F5

: Old Values

F7 : Load Setup Defaults

PU/PD/+/­(Shift)F2

Figure 4.4: Chipset Features Setup

• Auto Configuration

The default value is 60~70ns.

60~70ns For 60~70ns DRAM Timing.

60ns For 60ns DRAM Timing.

• Memory Hole At 15M-16M

The default value is Disabled.

Disabled Normal Setting.
Enabled Set Address=15~16MB remap to ISA BUS.

• DRAM ECC/PARITY select

The default value is ECC.

ECC Enable ECC function when using 36 bit DRAM Module.
PARITY Enable PARITY function when using 36 bit DRAM Module.

• Memory Parity / ECC Check

The default value is Disabled.

Disabled Disable Memory Parity or ECC check function.
Auto BIOS will automaticly detect whether 36 bit DRAM Module

: Select ItemESC
: Modify
: Color

4-13

GA-586DX

being used, If yes, the BIOS will Enable the function.

Enabled Enable Memory Parity or ECC check function.

4.8. POWER MANAGEMENT SETUP

ROM PCI / ISA BIOS

POWER MANAGEMENT SETUP

AWARD SOFTWARE, INC.

Power Management
PM Control by APM
Video Off Method

Standby Mode
Suspend Mode : Disabled
HDD Power Down

: Enabled
: Yes
: DPMS

: Disabled

: Disabled

** Power Down & Resume Events **
IRQ3 (COM 2)

IRQ4 (COM 1)
IRQ5 (LPT 2)
IRQ6 (Floppy Disk)
IRQ7 (LPT 1)
IRQ8 (RTC Alarm) : OFF
IRQ9 (IRQ2 Redir)
IRQ10 (Reserved)
IRQ11 (Reserved)
IRQ12 (PS/2 Mouse)
IRQ14 (Hard Disk)
IRQ15 (Reserved)

: Quit

F1

: Help

F5

: Old Values

F7 : Load Setup Defaults

PU/PD/+/­(Shift)F2

: ON
: ON
: OFF
: ON
: OFF

: OFF
: OFF
: OFF
: OFF
: ON
: OFF

: Modify
: Color

Figure 4.5: Power Management Setup

• Power Management

The default value is Enabled.

Enabled Enable Green function.
Disabled Disable Green function.

Please disable Green Function for Non-S CPU in OS/2, Unix, Window NT
& Novell system.

: Select ItemESC

• PM Control by APM

The default value is Yes.

Yes Enable software APM function.
No Disable software APM function.

• Video off Method

The default value is DPMS Support.

V/H SYNC + Blank BIOS will turn off V/H-SYNC when gets into

4-14

BIOS Configuration

Green mode for Green monitor power saving.

Blank Screen BIOS will only black monitor when gets into

Green mode.

DPMS Support BIOS will use DPMS Standard to control VGA

card. (The Green type VGA card will turn of V/H­SYNC automatically.)

• Standby Mode ( for Network Card using )

The default value is Disable.

Disable Disable Standby Mode.
1 min - 1 Hour Setup the timer to enter Standby Mode.

• Suspend mode ( for CPU stop clock Mode )

The default value is Disable.

Disable Disable Suspend Mode.
1 min - 1 Hour Setup the timer to enter Suspend Mode.

• HDD Power Down

The default value is Disable.

Disable Disable HDD Power Down mode function.
1-15 mins Enable HDD enter Power Down mode between 1 to 15

mins.

• IRQX ( 3,4,5,6,7,9,10,11,12,14,15 )

The default value is On.

On The system will return to normal mode from Green Mode

when the IRQX is active.

Off The system will not return to normal mode from Green

Mode when the IRQX is active.

4.9. PNP/PCI CONFIGURATION

4-15

GA-586DX

Resources Controlled by : Manual
Reset Configuration Data : Disabled

ROM PCI / ISA BIOS
PNP/PCI CONFGURATION
AWARD SOFTWARE, INC.

IRQ-3 assigned to
IRQ-4 assigned to
IRQ-5 assigned to
IRQ-7 assigned to
IRQ-9 assigned to
IRQ-10 assigned to
IRQ-11 assigned to
IRQ-12 assigned to
IRQ-14 assigned to
IRQ-15 assigned to
DMA-0 assigned to
DMA-1 assigned to
DMA-3 assigned to
DMA-5 assigned to
DMA-6 assigned to
DMA-7 assigned to

: Legacy ISA
: Legacy ISA
: PCI/ISA PnP
: Legacy ISA
: PCI/ISA PnP
: PCI/ISA PnP
: PCI/ISA PnP
: Legacy ISA
: Legacy ISA
: Legacy ISA
: PCI/ISA PnP
: PCI/ISA PnP
: PCI/ISA PnP
: PCI/ISA PnP
: PCI/ISA PnP
: PCI/ISA PnP

: Quit

F1

: Help

F5

: Old Values

F7 : Load Setup Defaults

PU/PD/+/­(Shift)F2

: Select ItemESC
: Modify
: Color

Figure 4.6: PCI Slot Configuration

• Resources Controlled by

The default value is Manual.

Manual User can set the PnP resourse (I/O Address, IRQ & DMA

channels) used by legacy ISA DEVICE.

Auto BIOS automaticly use these PnP resoures.

• IRQ (3,4,5,7,9,10,11,12,14,15),DMA(0,1,3,5,6,7) assigned to

The default value is "Legacy ISA" or "PCI/ISA PnP".

Legacy ISA The resource is used by Legacy ISA device.
PCI/ISA PnP The resource is used by PCI/ISA PnP device (PCI or

ISA).

4.10. INTEGRATED PERIPHERALS

4-16

ROM PCI / ISA BIOS

INTEGRATED PERIPHERALS

AWARD SOFTWARE, INC.

IDE HDD Block Mode : Enabled
PCI Slot IDE 2nd Channel
On-Chip Primary PCI IDE
On-Chip Secondary PCI IDE
IDE Primary Master PIO
IDE Primary Slave PIO
IDE Secondary Master PIO
IDE Secondary Slave PIO

Onboard PCI SCSI chip : Enabled
Onboard FDD Controller
Onboard Serial Port1
Onboard Serial Port2
Onboard Parallel Port
Onboard Parallel Mode

: Enabled
: Enabled
: Enabled
: Auto
: Auto
: Auto
: Auto

: Enabled
: COM1/3F8
: COM2/2F8
: 378H/IRQ7
: SPP

Figure 4.7: Load Setup Defaults

• IDE HDD Block Mode

The default value is Enabled.

Enabled Enable IDE HDD Block Mode
Disabled Disable IDE HDD Block Mode

: Quit

F1

: Help

F5

: Old Values

F7 : Load Setup Defaults

PU/PD/+/­(Shift)F2

BIOS Configuration

: Select ItemESC
: Modify
: Color

• PCI Slot IDE 2nd Channel

The default value is Enabled.

Enabled Enable PCI BUS DEVICE's 2nd IDE Channel
Disabled Disable PCI BUS DEVICE's 2nd IDE Channel

• On-Chip Primary IDE

The default value is Enabled.

Enabled Enable onboard 1st channel IDE port.
Disabled Disable onboard 1st channel IDE port.

• On-Chip Secondary IDE

The default value is Enabled.

4-17

GA-586DX

Enabled Enable onboard 2nd channel IDE port.
Disabled Disable onboard 2nd channel IDE port.

• IDE Primary Master PIO (for onboard IDE 1st channel).

The default value is Auto.

Auto BIOS will automatically defect the IDE HDD Accessing

mode.

Mode0~4 Manually set the IDE Accessing mode.

• IDE Primary Slave PIO (for onboard IDE 1st channel).

The default value is0 Auto.

Auto BIOS will automatically defect the IDE HDD Accessing

mode.

Mode0~4 Manually set the IDE Accessing mode.

• IDE Secondary Master PIO (for onboard IDE 2nd channel).

The default value is Auto.

Auto BIOS will automatically defect the IDE HDD Accessing

mode.

Mode0~4 Manually set the IDE Accessing mode.

• IDE Secondary Slave PIO (for onboard IDE 2nd channel).

The default value is Auto.

Auto BIOS will automatically defect the IDE HDD Accessing

mode.

Mode0~4 Manually set the IDE Accessing mode.

• Onboard PCI SCSI chip

The default value is Enabled.

Enabled Enable onboard SCSI port.
Disabled Disable onboard SCSI port.

• Onboard FDD Controller

The default value is Enabled.

Enabled Enable onboard FDD port.

4-18

Disabled Disable onboard FDD port.

• Onboard Serial Port 1

The default value is COM1/3F8.

COM1/3F8 Enable onboard Serial port A and address is 3F8H.
COM2/2F8 Enable onboard Serial port A and address is 2F8H.
COM3/3E8 Enable onboard Serial port A and address is 3E8H.
COM4/2E8 Enable onboard Serial port A and address is 2E8H.
Disabled Disable onboard Serial port A.

• Onboard Serial Port 2

The default value is COM2/2F8.

COM1/3F8 Enable onboard Serial port B and address is 3F8H.
COM2/2F8 Enable onboard Serial port B and address is 2F8H.
COM3/3E8 Enable onboard Serial port B and address is 3E8H.
COM4/2E8 Enable onboard Serial port B and address is 2E8H.
Disabled Disable onboard Serial port B.

• Onboard Parallel port

The default value is 378H/IRQ7.

378H Enable onboard LPT port and address is 378H/IRQ7.
278H Enable onboard LPT port and address is 278H/IRQ5.
Disabled Disable onboard LPT port.
3BCH Enable onboard LPT port and address is 3BCH/IRQ7.

BIOS Configuration

• Onboard Parallel Mode

The default value is SPP.

SPP Using Parallel port as Normal Printer Port.
EPP Using Parallel port as Enhanced Parallel Port.
ECP Using Parallel port as Extended Capabilities Port.
ECP+EPP Using Parallel port as ECP & EPP mode.

4.11. LOAD SETUP DEFAULTS

4-19

GA-586DX

ROM PCI / ISA BIOS

LOAD SETUP DEFAULTS

AWARD SOFTWARE, INC.

STANDARD CMOS SETUP

BIOS FEATURES SETUP

CHIPSET FEATURES SETUP

POWER MANAGEMENT SETUP

PNP/PCI CONFIGURATION

INTEGRATED PERIPHERALS

LOAD SETUP DEFAULTS

ESC

: Quit

F10

: Save & Exit Setup (Shift)F2

Load SETUP Defaults except Standard CMOS SETUP

Load SETUP Defaults (Y/N)? N

USER PASSWORD

IDE HDD AUTO DETECTION

SAVE & EXIT SETUP

EXIT WITHOUT SAVING

: Select Item

: Chang Color

Figure 4.7: Load Setup Defaults

• Load SETUP Defaults

To load SETUP defaults value to CMOS SRAM, enter "Y". If not, enter
"N".

M

If there is any problem occurred, loading SETUP DEFAULTS step is
recommended.

4-20

BIOS Configuration

4.12. USER PASSWORD

When you select this function, the following message will appear at the center
of the screen to assist you in creating a password.

ENTER PASSWORD

ROM PCI / ISA BIOS
USER PASSWORD

AWARD SOFTWARE, INC.

STANDARD CMOS SETUP

BIOS FEATURES SETUP

CHIPSET FEATURES SETUP

POWER MANAGEMENT SETUP

PNP/PCI CONFIGURATION

INTEGRATED PERIPHERALS

LOAD SETUP DEFAULTS

ESC

: Quit

F10

: Save & Exit Setup (Shift)F2

Enter Password:

Change / Set / Disable Password

USER PASSWORD

IDE HDD AUTO DETECTION

SAVE & EXIT SETUP

EXIT WITHOUT SAVING

: Select Item

: Chang Color

Figure 4.8: Password Setting

Type the password, up to eight characters, and press <Enter>. The password
typed now will clear and previously entered password from CMOS memory.
You will be asked to confirm the password. Type the password again and
press <Enter>. You may also press <Esc> to abort the selection and not enter
a password.

To disable password, just press <Enter> when you are prompted to enter
password. A message will confirm the password being disabled. Once the
password is disabled, the system will boot and you can enter Setup freely.

PASSWORD DISABLED
If you select System at Security Option of 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. If you select Setup at Security Option of BIOS Features
Setup Menu, you will be prompted only when you try to enter Setup.

4-21

GA-586DX

4.13. IDE HDD AUTO DETECTION

ROM PCI / ISA BIOS

IDE HDDD AUTO DETECTION

AWARD SOFTWARE, INC.

CYLS. HEAD PRECOMP LANDZ SECTOR

SIZETYPEHARD DISKS MODE

Select Primary Master Option (N=Skip): N

OPTION SIZE CYLS. HEAD PRECOMP LANDZ SECTOR MODE

1 (Y)

521

1060

2

521

530

3

521

530

Figure 4.9: IDE HDD Auto Detection

Type "Y" will accept the H.D.D. parameter reported by BIOS.

16

65535

32

32

65535

ESC

0

: Skip

1059

1059

1059

63

63

63

NORMAL

LBA

LARGE

Type "N" will keep the old H.D.D. parameter setup. If the hard disk cylinder NO.
is over 1024, then the user can select LBA mode or LARGER mode for DOS
partition LARGE than 528 MB.

4-22

4.14. SAVE & EXIT SETUP

BIOS Configuration

ROM PCI / ISA BIOS

SAVE & EXIT SETUP

AWARD SOFTWARE, INC.

STANDARD CMOS SETUP

BIOS FEATURES SETUP

CHIPSET FEATURES SETUP

POWER MANAGEMENT SETUP

PNP/PCI CONFIGURATION

INTEGRATED PERIPHERALS

LOAD SETUP DEFAULTS

ESC

: Quit

F10

: Save & Exit Setup (Shift)F2

SAVE to CMOS and EXIT (Y/N)? N

Save Data to CMOS & Exit SETUP

USER PASSWORD

IDE HDD AUTO DETECTION

SAVE & EXIT SETUP

EXIT WITHOUT SAVING

: Select Item

: Chang Color

Figure 4.10: Save & Exit Setup

Type "Y" will quit the Setup Utility and save the user setup value to RTC
CMOS SRAM.

Type "N" will return to Setup Utility.

4-23

GA-586DX

4.15. EXIT WITHOUT SAVING

ROM PCI / ISA BIOS

EXIT WITHOUT SAVING

AWARD SOFTWARE, INC.

STANDARD CMOS SETUP

BIOS FEATURES SETUP

CHIPSET FEATURES SETUP

POWER MANAGEMENT SETUP

PCI CONFIGURATION

INTEGRATED PERIPHERALS

LOAD SETUP DEFAULTS

ESC

: Quit

F10

: Save & Exit Setup (Shift)F2

Quit Without Saving (Y/N)? N

Abandon all Datas & Exit SETUP

USER PASSWORD

IDE HDD AUTO DETECTION

SAVE & EXIT SETUP

EXIT WITHOUT SAVING

: Select Item

: Chang Color

Figure 4.11: Exit Without Saving

Type "Y" will quit the Setup Utility without saving to RTC CMOS SRAM.
Type "N" will return to Setup Utility.

4-24

5. AT TECHNICAL INFORMATION

5.1. I/O BUS CONNECTOR PIN OUT

5.1.1. ISA SLOT PIN OUT

B01

A01

-I/O CH CHKGND

B02

A02
A03
A04
A05
A06
A07
A08
A09
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
A26
A27
A28
A29
A30
A31

SD07
SD06
SD05
SD04
SD03
SD02
SD01
SD00

-I/O CH RDY
AEN
SA19
SA18
SA17
SA16
SA15
SA14
SA13
SA12
SA11
SA10
SA09
SA08
SA07
SA06
SA05
SA04
SA03
SA02
SA01
SA00

-MEMCS16

-MASTER

RESET

+5V

IRQ9

-5V

DRQ2

-12V
0WS

+12V

GND

-SMEMW

-SMEMR

-IOW

-IOR

-DACK3

-DRQ3

-DACK1

-DRQ1

-REFRESH
BCLK

IRQ7
IRQ6
IRQ5
IRQ4
IRQ3

-DACK2
T/C

BALE

+5V

OSC

GND

B03
B04
B05
B06
B07
B08
B09
B10
B11
B12
B13
B14
B15
B16
B17
B18
B19
B20
B21
B22
B23
B24
B25
B26
B27
B28
B29
B30
B31

AT Technical Information

D01

-I/OCS16
IRQ10
IRQ11
IRQ12
IRQ15
IRQ14

-DACK0
DRQ0

-DACK5
DRQ5

-DACK6
DRQ6

-DACK7
DRQ7

+5V

GND

D02
D03
D04
D05
D06
D07
D08
D09
D10
D11
D12
D13
D14
D15
D16
D17
D18

C01
C02
C03
C04
C05
C06
C07
C08
C09
C10
C11
C12
C13
C14
C15
C16
C17
C18

SBHE
LA23
LA22
LA21
LA20
LA19
LA18
LA17

-MEMR

-MEMW
SD08
SD09
SD10
SD11
SD12
SD13
SD14
SD15

5-1

GA-596DX

5.1.2. PCI - BUS SLOT PIN OUT

B01

A01

-12V
NC

GND

NC

VCC

VCC
INTB#
INTD#
PST#1

NC

PST#2

GND

GND

NC

GND

CLK

GND

REQ#

VCC

AD_31
AD_29

GND

AD_27
AD_25

NC
CBE#3
AD_23

GND
AD_21
AD_19

NC
AD_17
CEB#2

GND

IRDY#

NC

DEVSEL#

GND

LOCK#

PERR#

B02
B03
B04
B05
B06
B07
B08
B09
B10
B11
B12
B13
B14
B15
B16
B17
B18
B19
B20
B21
B22
B23
B24
B25
B26
B27
B28
B29
B30
B31
B32
B33
B34
B35
B36
B37
B38
B39
B40

A02
A03
A04
A05
A06
A07
A08
A09
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
A26
A27
A28
A29
A30
A31
A32
A33
A34
A35
A36
A37
A38
A39
A40

NC
+12V
NC
NC
VCC
INTA#
INTC#
VCC
NC
VCC
NC
GND
GND
NC
RST#
VCC
GNT#
GND
NC
AD_30
NC
AD_28
AD_26
GND
AD_24
IDSEL
NC
AD_22
AD_20
GND
AD_18
AD_16
NC
FRAME#
GND
TRDY#
GND
STOP#
NC
SDONE

NC

SERR#

NC
CBE#1
AD_14

GND
AD_12
AD_10

GND

AD_08
AD_07

NC
AD_05
AD_03

GND

AD_01

VCC

NC

VCC
VCC

B41

A41

B42

A42

B43

A43

B44

A44

B45

A45

B46

A46

B47

A47

B48

A48

B49

A49

B52

A52

B53

A53

B54

A54

B55

A55

B56

A56

B57

A57

B58

A58

B59

A59

B60

A60

B61

A61

B62 A62

SBO#
GND
PAR
AD_15
NC
AD_13
AD_11
GND
AD_09

CBE#0
NC
AD_06
AD_04
GND
AD_02
AD_00
VCC
NC
VCC
VCC

5-2

5.2. I/O & MEMORY MAP

MEMORY MAP:

I/O MAP:

[0000000-009FFFF] System memory used by DOS and application program.
[00A0000-00BFFFF] Display buffer memory for VGA/ EGA/CGA/MONOCHROME adapter.
[00C0000-00DFFFF] Reserved for I/O device BIOS ROM or RAM buffer.
[00E0000-00EFFFF] Reserved for PCI device ROM.
[00F0000-00FFFFF] System BIOS ROM.
[0100000-BFFFFFF] System extension memory.

[000-01F] DMA controller.(Master)
[020-021] INTERRUPT controller.(Master)
[022-023] CHIPSET control registers I/O ports.
[040-05F] TIMER control registers.
[060-06F] KEYBOARD interface controller.(8042)
[070-07F] RTC ports & CMOS I/O ports.
[080-09F] DMA register.
[0A0-0BF] INTERRUPT controller.(Slave)
[0C0-0DF] DMA controller.(Slave)
[0F0-0FF] MATH COPROCESSOR
[1F0-1F8] HARD DISK controller.
[278-27F] PARALLEL port-2.
[2B0-2DF] GRAPHICS adapter controller.
[2F8-2FF] SERIAL port-2.
[360-36F] NETWORK ports.
[378-37F] PARALLEL port-1
[3B0-3BF] MONOCHROME & PRINTER adapter.
[3C0-3CF] EGA adapter.
[3D0-3DF] CGA adapter.
[3F0-3F7] FLOPPY DISK controller.
[3F8-3FF] SERIAL port-1.

AT Technical Information

5.3. TIMER & DMA CHANNELS MAP

TIMER MAP: TIMER Channel-0 System timer interrupt

TIMER Channel-1 DRAM REFRESH request
TIMER Channel-2 SPEAKER tone generator

DMA CHANNELS: DMA Channel-0 Available

DMA Channel-1 IBM SDLC
DMA Channel-2 FLOPPY DISK adapter
DMA Channel-3 Available
DMA Channel-4 Cascade for DMA controller 1
DMA Channel-5 Available
DMA Channel-6 Available
DMA Channel-7 Available

5.4. INTERRUPT MAP

5-3

GA-596DX

NMI: Parity check error

IRQ (H/W): 0 System TIMER interrupt from TIMER-0

1 KEYBOARD output buffer full
2 Cascade for IRQ 8-15
3 SERIAL port 2
4 SERIAL port 1
5 PARALLEL port 2

6 FLOPPY DISK adapter
7 PARALLEL port 1
8 RTC clock
9 Available
10 Available
11 Available
12 Available
13 MATH coprocessor

14 HARD DISK adapter
15 Available

5-4

5.5. RTC & CMOS RAM MAP

RTC & CMOS: 00 Seconds

01 Second alarm
02 Minutes
03 Minutes alarm
04 Hours
05 Hours alarm
06 Day of week
07 Day of month
08 Month
09 Year
0A Status register A
0B Status register B
0C Status register C
0D Status register D
0E Diagnostic status byte
0F Shutdown byte
10 FLOPPY DISK drive type byte
11 Reserve
12 HARD DISK type byte
13 Reserve
14 Equipment byte
15 Base memory low byte
16 Base memory high byte
17 Extension memory low byte
18 Extension memory high byte
19-2d
2E-2F
30 Reserved for extension memory low byte
31 Reserved for extension memory high byte
32 DATE CENTURY byte
33 INFORMATION FLAG
34-3F Reserve
40-7f Reserved for CHIPSET SETTING DATA

AT Technical Information

5-5

GA-586DX

APPENDIX A: POST MESSAGE

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.

• POST BEEP

Currently there is only one beep code in 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.

• ERROR MESSAGE

Once or more of the following messages may be displayed if the BIOS
detects an error during the POST. This list includes message for both the
ISA and the EISA BIOS.

Ö CMOS BATTERY HAS FAILED

CMOS battery is no longer functional. It should be replaced.

Ö CMOS CHECKSUM ERROR

Checksum of CMOS is incorrect. This can indicate that CMOS has
become corrupt. This error may have been caused by a weak battery.
Check the battery and replace if necessary.

Ö 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 you assumed the system would boot 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. Then reboot
the system.

Ö DISKETTE DRIVES OR TYPES MISMATCH ERROR - RUN SETUP

Type of diskette drive installed in the system is different from the CMOS
definition. Run Setup to re-configure the drive type correctly.

Ö DISPLAY SWITCH IS SET INCORRECTLY

Display switch on the motherboard can be set to either monochrome or
color. This indicates the switch is set to a different setting than indicated in
Setup. Determine which setting is correct, and then either turn off the
system and change the jumper, or enter Setup and change the VIDEO
selection.

A-1

Appendix A: Post Message

Ö 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.

Ö EISA Configuration Checksum Error

PLEASE RUN EISA CONFIGURATION UTILITY
The EISA non-volatile RAM checksum is incorrect or cannot correctly read

the EISA slot. This can indicate either the EISA non-volatile memory has
become corrupt or the slot has configured incorrectly. Also be sure the
card is installed firmly in the slot.

Ö EISA Configuration Is Not Complete

PLEASE RUN EISA CONFIGURATION UTILITY
The slot configuration information stored in the EISA non-volatile memory

is incomplete.

F When either of these errors appear, the system will boot in ISA mode,

which allows you to run the EISA Configuration Utility.

Ö ERROR ENCOUNTERED INITIALIZING HARD DRIVE

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.

Ö ERROR INITIALIZING HARD DISK CONTROLLER

Cannot initialize controller. Make sure the cord 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 in the
hard drive.

Ö FLOPPY DISK CNTRLR ERROR OR NO CNTRLR PRESENT

Cannot find or initialize the floppy drive controller. Make sure the controller
is installed correctly and firmly. If there are no floppy drives installed, be
sure the Diskette Drive selection in Setup is set to NONE.

Ö Invalid EISA Configuration

PLEASE RUN EISA CONFIGURATION UTILITY
The non-volatile memory containing EISA configuration information was

programmed incorrectly or has become corrupt. Re-run EISA
configuration utility to correctly program the memory.

F When this error appears, the system will boot in ISA mode, which allows

you to run the EISA Configuration Utility.

A-2

GA-586DX

Ö 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.

Ö 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.

Ö Memory parity Error at ...

Indicates a memory parity 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.

Ö MEMORY SIZE HAS CHANGED SINCE LAST BOOT

Memory has been added or removed since the last boot. In EISA mode
use Configuration Utility to re-configure the memory configuration. In ISA
mode enter Setup and enter the new memory size in the memory fields.

Ö 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.

Ö 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.

Ö 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.

Ö PRESS A KEY TO REBOOT

This will be displayed at the bottom screen when an error occurs that
requires you to reboot. Press any key and the system will reboot.

Ö PRESS F1 TO DISABLE NMI, F2 TO REBOOT

When BIOS detects a Non-maskable Interrupt condition during boot, this
will allow you to disable the NMI and continue to boot, or you can reboot
the system will the NMI enabled.

Ö RAM PARITY ERROR - CHECKING FOR SEGMENT ...

Indicates a parity error in Random Access Memory.

A-3

Appendix A: Post Message

Ö Should Be Empty But EISA Board Found

PLEASE RUN EISA CONFIGURATION UTILITY
A valid board ID was found in a slot that was configured as having no

board ID.

F When this error appears, the system will boot in ISA mode, which allows

you to run the EISA Configuration Utility.

Ö Should Have EISA Board But Not Found

PLEASE RUN EISA CONFIGURATION UTILITY
The board installed is not responding to the ID request, or no board ID has

been found in the indicated slot.

F When this error appears, the system will boot in ISA mode, which allows

you to run the EISA Configuration Utility.

Ö Slot Not Empty

Indicates that a slot designated as empty by the EISA Configuration Utility
actually contains a board.

F When this error appears, the system will boot in ISA mode, which allows

you to run the EISA Configuration Utility.

Ö 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 and ALT keys and press
DEL.

Ö Wrong Board In Slot

PLEASE RUN EISA CONFIGURATION UTILITY
The board ID does not match the ID stored in the EISA non-volatile

memory.

F When this error appears, the system will boot in ISA mode, which allows

you to run the EISA Configuration Utility.

A-4

GA-586DX

APPENDIX B: POST CODES

F EISA POST codes are typically output to port address 300h. ISA POST

codes are typically output to port address 80h.

POST Name Description
C0 Turn Off Chipset

1 Processor Test 1 Processor Status (1 FLAGS) Verification.

2 Processor Test 2 Read/Write/Verify all CPU registers except SS, SP,

3 Initialize Chips Disable NMI, PIE, AIE, UEI, SQWV.

4 Test Memory

5

6 Reserved
7 Test CMOS

BE Chipset Default

C1 Memory presence

C5 Early Shadow OEM Specific-Early Shadow enable for fast boot.
C6 Cache presence

8 Setup low memory Early chip set initialization.

Cache

Refresh Toggle

Blank video,
Initialize keyboard

Interface and
Battery Status

Initialization

test

test

OEM Specific-Cache control.

Test the following processor status flags
carry, zero, sign, overflow,
The BIOS will set each of these flags, verify they are

set, then turn each flag off and verify it is off.

and BP with data pattern FF and 00.

Disable video, parity checking, DMA.
Reset math coprocessor.
Clear all page registers, CMOS shutdown byte.
Initialize timer 0, 1, and 2, including set EISA timer to

a known state.
Initialize DMA controllers 0 and 1.
Initialize interrupt controllers 0 and 1.
Initialize EISA extended registers.
RAM must be periodically refreshed in order to keep

the memory from decaying. This function assures
that the memory refresh function is working properly.

Keyboard controller initialization.

Verifies CMOS is working correctly, detects bad
battery.

Program chipset registers with power on BIOS
defaults.

OEM Specific-Test to size on-board memory.

External cache size detection.

Memory presence test.

B-1

Appendix B: Post Codes

OEM chip set routines.
Clear low 64 K of memory.
Test first 64 K memory.

9 Early Cache

Initialization

A Setup Interrupt

Vector Table

Cyrix CPU initialization.
Cache initialization.
Initialize first 120 interrupt vectors with

SPURIOUS_INT-HDLR and initialize INT 00h-1Fh
according to INT_TBL.

B Test CMOS RAM

Checksum

Test CMOS RAM Checksum, if bad, or insert key
pressed, load defaults.

C Initialize keyboard Detect type of keyboard controller (optional).

Set NUM_LOCK status.

D Initialize Video

Interface

Detect CPU clock.
Read CMOS location 14h to find out type of video in

use.
Detect and Initialize Video Adapter.

E Test Video

Memory

Test video memory, write sign-on message to
screen.

Setup shadow RAM - Enable shadow according to
Setup.

F Test DMA

Controller 0

BIOS checksum test.
Keyboard detect and initialization.

10 Test DMA

Controller 1

11 Test DMA Page

Test DMA Page Registers.

registers
12-13 Reserved
14 Test Timer

Test 8254 Timer 0 Counter 2.

Counter 2
15

16

17 Test Stuck 8259's

18 Test 8259 Interrupt

Test 8259-1 Mask

Bits

Test 8259-2 Mask

Bits

Interrupt Bits

Verify 8259 Channel 1 masked interrupts by
alternately turning off and on the interrupt lines.

Verify 8259 Channel 2 masked interrupts by
alternately turning off and on the interrupt lines.

Turn off interrupts then verify no interrupt mask
register is on.

Force an interrupt and verify the interrupt occurred.

Functionality
19 Test Stuck NMI

Verify NMI can be cleared.
Bits (Parity/IO
Check)

1A Display CPU clock.

B-2

GA-586DX

1B-1E Reserved
1F Set EISA Mode If EISA non-volatile memory checksum is good,

20 Enable Slot 0 Initialize slot 0 (System Board).
21-2F Enable Slots 1-15 Initialize slot 1 through 15.
30 Size Base and

Extended Memory

31 Test Base and

Extended Memory

execute EISA initialization. If not, execute ISA tests

an clear EISA mode flag.

Test EISA Configuration Memory Integrity (checksum

& communication interface).

Size base memory from 256 K to 640 K extended

memory above 1 MB.

Test base memory from 256 K to 640 K and

extended memory above 1 MB using various

patterns.

F This will be skipped in EISA mode and can be

"skipped" with ESC key in ISA mode.

32 Test EISA

Extended Memory

If EISA Mode flag is set then test EISA memory

found in slots initialization.

F This will be skipped in ISA mode and can be

"skipped" with ESC key in EISA mode.
33-3B Reserved
3C Setup Enabled
3D Initialize & Install

Mouse

3E Setup Cache

Controller
3F Reserved
BF Chipset

Initialization
40 Display virus protest disable or enable.
41 Initialize Floppy

Drive & Controller
42 Initialize Hard

Drive & Controller
43 Detect & Initialize

Serial/Parallel

Ports
44 Reserved
45 Detect & Initialize

Math Coprocessor
46 Reserved
47 Reserved

Detect if mouse is present, initialize mouse, install
interrupt vectors.

Initialize cache controller.

Program chipset registers with Setup values.

Initialize floppy disk drive controller and any drives.

Initialize hard drive controller and any drives.

Initialize any serial and parallel ports (also game
port).

Initialize math coprocessor.

B-3

Appendix B: Post Codes

48-4D Reserved
4E Manufacturing

POST Loop or

Display Messages

4F Security Check Ask password security (optional).
50 Write CMOS Write all CMOS values back to RAM and clear

51 Pre-boot Enable Enable parity checker.

52 Initialize Option

ROMs

Reboot if Manufacturing POST Loop pin is set.
Otherwise display any messages (i.e., any non-fatal
errors that were detected during POST) and enter
Setup.

screen.

Enable NMI, Enable cache before boot.
Initialize any option ROMs present from C8000h to

EFFFFh.

F When FSCAN option is enabled, will initialize

from C8000h to F7FFFh.

53 Initialize Time

Value
60 Setup Virus

Protect
61 Set Boot Speed Set system speed for boot
62 Setup NumLock Setup NumLock status according to Setup
63 Boot Attempt Set low stack.

B0 Spurious If interrupt occurs in protected mode.
B1 Unclaimed NMI If unmasked NMI occurs, display

E1-EF Setup Pages E1 - Page 1, E2 - Page 2, etc.
FF Boot

Initialize time value in 40h: BIOS area.

Setup virus protect according to Setup

Boot via INT 19h.

Press F1 to disable NMI, F2 reboot.

B-4

GA-586DX

APPENDIX C: BIOS DEFAULT DRIVE TABLE

Type Size

(MB)

1 10 MB 306 4 17 128 305 TEAC SD510

2 20 MB 615 4 17 300 615 Seagate ST225,

3 31 MB 615 6 17 300 615
4 62 MB 940 8 17 512 940
5 47 MB 940 6 17 512 940
6 20 MB 615 4 17 65535 615 Seagate ST125

7 31 MB 462 8 17 256 511
8 30 MB 733 5 17 65535 733 Tandon TM703
9 112 MB 900 15 17 65535 901
10 20 MB 820 3 17 65535 820
11 35 MB 855 5 17 65535 855
12 50 MB 855 7 17 65535 855
13 20 MB 306 8 17 128 319 Disctron526,

14 43 MB 733 7 17 65535 733
16 20 MB 612 4 17 0 663 Microscience

17 41 MB 977 5 17 300 977
18 57 MB 977 7 17 65535 977
19 60 MB 1024 7 17 512 1023
20 30 MB 733 5 17 300 732
21 43 MB 733 7 17 300 732
22 30 MB 733 5 17 300 733 Seagate ST4038
23 10 MB 306 4 17 0 336
24 54 MB 925 7 17 0 925 Seagate ST4051
25 69 MB 925 9 17 65535 925 Seagate ST4096
26 44 MB 754 7 17 754 754 Maxtor2085

Cylinders Heads Sectors Write /

Precomp

Land
Zone

Example Model

MMI 112, 5412

ST4026

Tandon TM262

MMI M125

HH725
Syquest3250,

3425

C-1

Appendix C: BIOS Default Drive Table

27 69 MB 754 11 17 65535 754 Maxtor2140,

Priam S14

28 41 MB 699 7 17 256 699 Maxtor2190,

Priam S19

29 68 MB 823 10 17 65535 823 Maxtor1085

Micropolis1325

30 53 MB 918 7 17 918 918 Maxtor1105,

31 94 MB 1024 11 17 65535 1024 Maxtor1170
32 128 MB 1024 15 17 65535 1024 CDC9415
33 43 MB 1024 5 17 1024 1024
34 10 MB 612 2 17 128 612
35 77 MB 1024 9 17 65535 1024
36 68 MB 1024 8 17 512 1024
37 41 MB 615 8 17 128 615
38 25 MB 987 3 17 987 987
39 57 MB 987 7 17 987 987 Maxtor1140,

40 41 MB 820 6 17 820 820 Seagate ST251
41 41 MB 977 5 17 977 977 Seagate ST4053

42 41 MB 981 5 17 981 981 Miniscribe3053/

43 48 MB 830 7 17 512 830 Miniscribe 3650
44 69 MB 830 10 17 65535 830

45 114 MB 917 15 17 65535 918 Conner CP3104
46 152 MB 1224 15 17 65535 1223 Conner CP3204
User

1120, 4780

4380

Miniscribe3053/
6053

6053 RLL

Miniscribe 3650
RLL

C-2

GA-586DX

APPENDIX D: PROBLEM SHEET

1. Customer Data

Name
Address

2. Mainboard Date

Model NO.
Serial No.

3. System Configuration

CPU Type:
CPU Brand:
CPU Speed:
DRAM Type:
DRAM Speed:
DRAM Total Size:
DRAM Brand:
SRAM Size:
SRAM Part No.
Video Card:
Video Chip or Brand:
Floppy Drive A Capacity & Brand:
Floppy Drive B Capacity & Brand:
Storage Controller Type
Hard Drive C Brand & Type:
Hard Drive D Brand & Type:
LAN Controller Type:
LAN Card Brand & Model:
Serial / Parallel Chip Brand & Model:
Mouse Brand & Model:
O.S.

4. AUTOEXEC.BAT & CONFIG.SYS File:

GA- Rev. No.

q 1 q 2 q 4 q 8 q 16 q 32 MB
q 80 q 70 q 60 ns

MB

q 64KB q 128 KB q 256 KB q 512 KB
TAG: DATA:

q MFM q RLL q IDE q EDSI q SCSI

q DOS q OS/2 q NETWARE q UNIX / XENIX Ver.:

Tel. No.
Fax. No.
Purchase Date

5. Problem Description:

R-01-03 -061001

D-1