Gigabyte GA-5AX (REV. 1.0) GA-5AX Rev. 1.0 second edition user manual

5AX

USER'S MANUAL

¯ Support Intel Pentium, MMX, Cyrix/IBM 6x86MX, M2, AMD K5, K6,

K6-2 & IDT C6 CPUs.

¯ Support auto detect CPU Voltage.
¯ Support Parity check or Ecc Function.

¯ Support Fully AGP 1.0 Specification.

¯ Support switching mode Voltage regulator on Board.
¯ Support 66/75/83 MHz and 100MHz are optional.
¯ Support Modem Ring On (COM B).
¯ Support Wake on Lan

than 600 mA)

¯ Thermal Protection

Pentium

.



Processor PCI - ISA BUS MAINBOARD

REV. 1.0 Second Edition

(The ATX power supply supports larger

Release Date 98.07.21

R-10-02-080721

5AX

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.

¯THIRD-PARTY BRANDS AND NAMES ARE THE PROPERTY OF THEIR
RESPECTIVE OWNERS.

JULY 21, 1998 Taipei, Taiwan

1

Quick Installation Guide

I. CPU Jumper Setting Table:

SW: CPU INT./ EXT. FREQ. RATIO

t

SW 4 5 6 7

O ON AUTO X X X O

X OFF 2.0 V X X X X

2.1 V X X O X

2.2 V X O X X

2.3 V X O O X

2.4 V O X X X

SW 2 3 8 2.5 V O X O X
x 1.5 X X X 2.6 V O O X X
x 2 O X X 2.7 V O O O X
x 2.5 O O X 2.8 V X X X O
x 3 X O X 2.9 V X X O O
x 3.5 X X X 3.0 V X O X O
x 4 O X O 3.1 V X O O O
x 4.5 O O O 3.2 V O X X O
x 5 X O O 3.3 V O X O O
x 5.5 X X O 3.4 V O O X O

3.5 V O O O O

MHz SW1 SW4

66 X

2-3
75 X 1-2
83 O 2-3

100 O 1-2

2

5AX

II. Quick Installation Guide:

CPU

1. Pentium

2. Pentium

3. Pentium

4. Pentium



Processor 100 MHz



Processor 133 MHz



Processor 166 MHz



Processor 200 MHz

5. Intel MMX-166MHz

6. Intel MMX-200MHz

7. Intel MMX-233MHz

8. P54CT-166 MHz

9. P54CTB-166 MHz

10. P54CTB-200 MHz

11. AMDK5-PR133

12. AMDK5-PR166

13. AMD-K6/166 (2.9V)

SW1 SW2 SW3 SW4 SW5 SW6 SW7 SW8 JP4

OFF OFF OFF OFF OFF OFF ON OFF 2-3

OFF ON OFF OFF OFF OFF ON OFF 2-3

OFF ON ON OFF OFF OFF ON OFF 2-3

OFF OFF ON OFF OFF OFF ON OFF 2-3

OFF ON ON OFF OFF OFF ON OFF 2-3

OFF OFF ON OFF OFF OFF ON OFF 2-3

OFF OFF OFF OFF OFF OFF ON OFF 2-3

OFF ON ON OFF OFF OFF ON OFF 2-3

OFF ON ON OFF OFF OFF ON OFF 2-3

OFF OFF ON OFF OFF OFF ON OFF 2-3

OFF ON OFF OFF OFF OFF ON OFF 2-3

OFF ON ON OFF OFF OFF ON OFF 2-3

OFF ON ON OFF OFF ON ON OFF 2-3

14. AMD-K6/200 (2.9V)

15. AMD-K6/233 (3.2V)

16. AMD-K6/266 (66*4 2.2V)
AMD-K6-2/266 (66*4 2.2V)

17. AMD-K6/266 (100*2.5

2.2V)

18. AMD-K6/300 (66*4.5 2.2V)

OFF OFF ON OFF OFF ON ON OFF 2-3

OFF OFF OFF ON OFF OFF ON OFF 2-3

OFF ON OFF OFF ON OFF OFF ON 2-3

ON ON ON OFF ON OFF OFF OFF 1-2

OFF ON ON OFF ON OFF OFF ON 2-3

3

Quick Installation Guide

19. AMD-K6/300 (100*3 2.2V)
AMD-K6-2/300 (100*3

2.2V)

CPU

20. Cyrix/IBM 6x86-150MHz­PR200+ (75*2)

21. Cyrix/IBM 6x86L-PR166+
(2.8V)

22. Cyrix/IBM 6x86MX-PR200+

(75*2 2.9V)

23. Cyrix/IBM 6x86MX-PR166

(66*2 2.9V)

24. Cyrix/IBM 6x86MX-PR200

(66*2.5 2.9V)

25. Cyrix/IBM 6x86MX-PR200

(75*2 2.9V)

26. Cyrix/IBM 6x86MX-PR233

(66*3 2.9V)

27. Cyrix/IBM 6x86MX-PR233

(75*2.5 2.9V)

28. Cyrix/IBM 6x86MX-PR233

(83*2 2.9V)

29. Cyrix/IBM 6x86MX-PR266

(66*3.5 2.9V)

30. Cyrix/IBM 6x86MX-PR266

(75*3 2.9V)

31. Cyrix/IBM 6x86MX-PR266

(83*2.5 2.9V)

32. Cyrix M2-PR300

(66*3.5 2.9V)

33. IDT C6-200 (66*3 3.52V)

34. IDT C6-225 (75*3 3.52V)

35. IDT C6-266 (66*4 3.52V)

ON OFF ON OFF ON OFF OFF OFF 1-2

SW1 SW2 SW3 SW4 SW5 SW6 SW7 SW8 JP4

OFF ON OFF OFF OFF OFF ON OFF 1-2

OFF ON OFF OFF OFF OFF ON OFF 2-3

OFF ON OFF OFF OFF ON ON OFF 1-2

OFF ON OFF OFF OFF ON ON OFF 2-3

OFF ON ON OFF OFF ON ON OFF 2-3

OFF ON OFF OFF OFF ON ON OFF

OFF OFF ON OFF OFF ON ON OFF 2-3

OFF ON ON OFF OFF ON ON OFF 1-2

ON ON OFF OFF OFF ON ON OFF 2-3

OFF OFF OFF OFF OFF ON ON OFF 2-3

OFF OFF ON OFF OFF ON ON OFF 1-2

ON ON ON OFF OFF ON ON OFF 2-3

OFF OFF OFF OFF OFF ON ON OFF 1-2

OFF OFF ON OFF OFF OFF ON OFF 2-3

OFF OFF ON OFF OFF OFF ON OFF 1-2

OFF ON OFF OFF OFF OFF ON ON 2-3

1-2

4

5AX

JP8

1234567

8

ON

sw

sw

sw

¬

Note: If Cyrix 6x86 is being used, please check the CPU Date Code after 605.

1. Pentium Processor 100 MHz

1

1

JP4

1 1

JP5JP4

2. Pentium Processor 133 MHz

1ON

OFF

1 2 3 4 5 6 7 8

JP4

3. Pentium Processor 166 MHz

ON
OFF

1 2 3 4 5 6 7 8

1

JP4

1 1

1 1

JP7JP6

0

CPU

1
JP10

1

1

JP4

S1

4. Pentium Processor 200 MHz

5

Quick Installation Guide

sw

ON
OFF

1 2 3 4 5 6 7 8

1

JP4

6

5AX

sw

sw

sw

sw

sw

5. Intel MMX-166 MHz

ON
OFF

1 2 3 4 5 6 7 8

6. Intel MMX-200 MHz

ON
OFF

1 2 3 4 5 6 7 8

7. Intel MMX-233 MHz

ON
OFF

1 2 3 4 5 6 7 8

8. P54CT-166 MHz

ON
OFF

1 2 3 4 5 6 7 8

1

JP4

1

JP4

1

JP4

1

JP4

1

9. P54CTB-166 MHz

ON
OFF

1 2 3 4 5 6 7 8

1

JP4

7

10. P54CTB-200 MHz

sw

sw

sw

sw

sw

Quick Installation Guide

ON
OFF

1 2 3 4 5 6 7 8

11. AMDK5-PR133

ON
OFF

1 2 3 4 5 6 7 8

12. AMDK5-PR166

ON
OFF

1 2 3 4 5 6 7 8

13. AMD-K6/166 (2.9V)

ON
OFF

1 2 3 4 5 6 7 8

1

JP4

1

JP4

1

JP4

1

JP4

14. AMD-K6/200 (2.9V)

ON
OFF

1 2 3 4 5 6 7 8

1

JP4

8

5AX

sw

sw

sw

sw

sw

15. AMD-K6/233 (3.2V)

ON
OFF

1 2 3 4 5 6 7 8

1

JP4

16. AMD-K6/266 (2.2V 66*4); AMD-K6-2 266 (2.2V 66*4)

ON
OFF

1 2 3 4 5 6 7 8

1

JP4

17. AMD-K6/266 (2.2V 100*2.5)

ON
OFF

1 2 3 4 5 6 7 8

1

JP4

18. AMD-K6/300 (2.2V 66*4.5)

ON
OFF

1 2 3 4 5 6 7 8

1

JP4

19. AMD-K6/300 (2.2V 100*3); AMD-K6-2 300 (2.2V 100*3)

ON
OFF

1 2 3 4 5 6 7 8

1

JP4

9

20. Cyrix /IBM 6x86-150 MHz-PR200+ (75*2)

sw

sw

sw

sw

sw

Quick Installation Guide

ON
OFF

1 2 3 4 5 6 7 8

1

JP4

21. Cyrix / IBM 6x86L-PR166+ (2.8V)

ON
OFF

1 2 3 4 5 6 7 8

1

JP4

22. Cyrix / IBM 6x86L-PR200+ (75*2 2.9V)

ON
OFF

1 2 3 4 5 6 7 8

1

JP4

23. Cyrix / IBM 6x86MX-PR166 (66x2 2.9V)

ON
OFF

1 2 3 4 5 6 7 8

1

JP4

24. Cyrix / IBM 6x86MX-PR200 (66x2.5 2.9V)

ON
OFF

1 2 3 4 5 6 7 8

1

JP4

10

5AX

sw

sw

sw

sw

sw

25. Cyrix / IBM 6x86MX-PR200 (75x2 2.9V)

ON
OFF

1 2 3 4 5 6 7 8

1

JP4

26. Cyrix / IBM 6x86MX-PR200 (66x3 2.9V)

ON
OFF

1 2 3 4 5 6 7 8

1

JP4

27. Cyrix / IBM 6x86MX-PR233 (75x2.5 2.9V)

ON
OFF

1 2 3 4 5 6 7 8

1

JP4

28. Cyrix / IBM 6x86MX-PR233 (83x2 2.9V)

ON
OFF

1 2 3 4 5 6 7 8

1

JP4

29. Cyrix / IBM 6x86MX-PR266 (66x3.5 2.9V)

ON
OFF

1 2 3 4 5 6 7 8

1

JP4

11

30. Cyrix / IBM 6x86MX-PR266 (75x3 2.9V)

sw

sw

sw

sw

sw

Quick Installation Guide

ON
OFF

1 2 3 4 5 6 7 8

1

JP4

31. Cyrix / IBM 6x86MX-PR266 (83x2.5 2.9V)

ON
OFF

1 2 3 4 5 6 7 8

1

JP4

32. Cyrix M2-PR300 (66x3.5 2.9V)

ON
OFF

1 2 3 4 5 6 7 8

1

JP4

33. IDT C6-200 (66x3 3.52V)

ON
OFF

1 2 3 4 5 6 7 8

1

JP4

34. IDT C6-225 (75x3 3.52V)

ON
OFF

1 2 3 4 5 6 7 8

1

JP4

12

5AX

sw

35. IDT C6-266 (66x4 3.52V)

ON
OFF

1 2 3 4 5 6 7 8

1

JP4

III. Quick Installation Guide of Jumper setting:

SPK : Speaker Connector

1

Pin No.

Function
1
2
3
4

VCC
NC
NC
Data

JP4

JP

JP

RST : Reset Switch

Open :
Normal operation.

Close :
For hardware reset system.

1

1

JP1

CPU

JP

JP

1

S1

JP1

CPU

JP

JP

13

JP4

JP

JP

1

S1

PWR LED : Power LED (As a 3 steps ACPI LED)

1

Quick Installation Guide

Pin No.

1
2
3

Function
LED anode (+).
LED cathode (-).
LED cathode (-).

HD : IDE Hard Disk Active LED

1

Pin No.

1
2

Function

LED anode (+)

LED cathode (-)

GN : Green Function Switch

Open :
Normal operation.

Close one time:
For system entering Green

mode

JP4

JP4

JP1

CPU

JP

JP

CPU

CPU

JP1

JP1

1

S1

1

S1

JP

JP

JP

JP

JP

JP

JP

JP

14

JP4

1

S1

5AX

Pin No.

Function

GD : Green LED

1

Pin No.

1
2

Function

LED canode (-)
LED athode (+)

SOFT PWR : Power On/Off Switch

1

Two Option :

1. Instant On/Off:Power On/Off
system immediately

2. Delay 4 Seconds:Power. Off
system.Press over 4 Secs

ATX Power Connector

1

11

3,5,7,13,15-17

4,6,19,20

10
12
18

8
9

14

GND
VCC (+5V)
+12V

-12V

-5V
Power Good
5V SB

(Stand by )

PS-ON

(Soft ON/OFF)

JP4

JP4

JP1

CPU

JP

JP

CPU

CPU

JP1

JP1

1

S1

1

S1

1

S1

JP

JP

JP

JP

JP

JP

JP

JP

JP

JP

15

JP9 : CPU Cooling Fan Power Connector

Pin No.

Function

+5V

GND

Signal

321

1

Pin No.

1
2

Function

+12V

GND

JP4

JP8: Wake On Lan

1

JP4

Quick Installation Guide

JP1

CPU

JP

JP

CPU

JP1

1

S1

1

S1

JP

JP

JP

JP

JP

JP

LPT : LPT PORT

16

JP4

JP1

CPU

JP

JP

JP

JP

1

S1

5AX

CN4 : USB Port

CN5 : COM B

JP4

JP4

JP1

CPU

JP

JP

CPU

JP1

1

S1

1

S1

JP

JP

JP

JP

JP

JP

CN6 : COM A

17

JP4

JP1

CPU

JP

JP

JP

JP

1

S1

JP11 : PS/2 Mouse / Keyboard Connector

Pin No.

Function

123

4

Key Data

VCC (+5V)

GND

PS/2 Mouse

PS/2 Keyboard

Quick Installation Guide

JP1

PS/2 Mouse / Keyboard

NC

5 Key Clock.
6 NC

CN2 : FLOPPY PORT

1

RED LINE

CN1 : For Primary IDE port

1

RED LINE

JP4

JP4

CPU

JP

JP

CPU

CPU

JP1

JP1

1

S1

1

S1

JP

JP

JP

JP

18

JP4

JP

JP

JP

JP

1

S1

5AX

CN3 : For Secondary IDE port

1

RED LINE

BT1 : For Battry

+

M Danger of explosion if battery is

incorrectly replaced.

Replace only with the same or

M

equivalent type recommended by
the manufacturer.

Dispose of used batteries

M

according to the manufacturer’s
instructions.

–

JP4

JP4

JP1

CPU

JP

JP

CPU

JP1

1

S1

1

S1

JP

JP

JP

JP

JP

JP

19

Quick Installation Guide

III. Top Performance Test Setting:

Users have to modify the value for each item in chipset features as follow

for top performance setting.

**

Each value of items as above depends on your hardware configuration : CPU ,

SDRAM , Cards , etc.
Please modify each value of items If your system does not work properly.

20

5AX

PERFORMANCE LIST

The following list of performance data 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 MMX-233 MHz , Cyrix 6x86M2­PR300 , AMD K6-2 300

• DRAM (128 × 1) MB SDRAM (LGS GM72N66841CT7J)

• CACHE SIZE 512 KB

• DISPLAY GA-600 (4MB SGRAM)

• STORAGE Onboard IDE (IBM DHEA-36451)

• O.S. Windows® NT 4.0

• DRIVER

Processor

Winbench98

CPU mark32

FPU Winmark

Business Disk

Hi-End Disk

Business Graphics

Hi-End Graphics

Display Driver at 1024 x 768 x 256 colors x 75Hz.
ALi Bus Master IDE Driver

Intel-MMX 233MHz

(66x3.5)

AMD K6-2 300

(100x3)

Cyrix M-2 PR300

467 756 478

912 979 534
1760 1840 1820
4160 4550 4450

105 153 139

109 156 150

Winstone98

Business

Hi-End

22.5

29.1 25.9

23.8 29.6 26.7

(66x3.5 )

21

5AX

TABLE OF CONTENTS

1. INTRODUCTION

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

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

1.3. PERFORMANCE LIST ..............................................................1-3

1.4. BLOCK DIAGRAM..................................................................... 1-4

1.5. INTRODUCE THE PCI - BUS.................................................... 1-5

1.6. FEATURES...............................................................................1-5

1.7. What is AGP............................................................................. 1-6

2. SPECIFICATION

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

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

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

3. HARDWARE INSTALLATION

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

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

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

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

3.5. DRAM INSTALLATION .............................................................. 3-5

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

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

3.8. SPEAKER CONNECTOR INSTALLATION................................. 3-7

1

Table of Contents

3.9. ACPI LED CONNECTOR INSTALLATION................................. 3-7

3.10. HARDWARE RESET SWITCH CONNECTOR INSTALLATION.3-7

3.11. GREEN FUNCTION INSTALLATION....................................... 3-7

3.12. PERIPHERAL DEVICE INSTALLATION................................... 3-7

4. BIOS CONFIGURATION

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

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

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 .........................................................4-10

4.7. CHIPSET FEATURES SETUP................................................... 4-14

4.8. POWER MANAGEMENT SETUP.............................................. 4-18

4.9. PNP/PCI CONFIGURATION...................................................... 4-20

4.10. LOAD BIOS DEFAULTS.......................................................... 4-26

4.11. LOAD SETUP DEFAULTS ....................................................... 4-27

4.12. INTEGRATED PERIPHERALS ................................................ 4-28

4.13. SUPERVISOR / USER PASSWORD....................................... 4-34

4.14. IDE HDD AUTO DETECTION.................................................. 4-35

4.15. SAVE & EXIT SETUP.............................................................. 4-36

2

5AX

4.16. EXIT WITHOUT SAVING ........................................................4-37

1

5AX

1. INTRODUCTION

1.1. PREFACE

Welcome to use the 5AX motherboard. The motherboard is a Pipeline 512
KB CACHE 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
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 Pentium



Processor based PC / AT compatible mainboard with PCI /

ISA / AGP Bus.

q 4 PCI Bus slots, 3 ISA Bus slots, 1 AGP slot.
q Supports :

• Pentium



Processor :100-233 MHz; P54CT (166); MMX (166 / 200

/ 233), P54CTB (166 / 200)

• AMD :K5-(PR133 / PR166); K6-(166 / 200(2.9V)

/233(3.2V)/266/300(2.2V);K6-2(266/300(2.2V))

• Cyrix/IBM :6x86(133(PR166+));6x86L(133PR166+(2.8V))

; 6x86MX (PR200 (66x2.5(2.9V) / (75x2(2.9V)
/ PR233 (66x3(2.9V) / (75x2.5 2.9V)) / PR266
(66x3.5 2.9V) (75x3 2.9V) (83x2.5 2.9V));
M2-PR300(66x3.5 2.9V)

• IDT :C6-(200; 225; 266)

q Supports true 64 bits CACHE and DRAM access mode.
q Supports 321 Pins (Socket 7) ZIF white socket on board.
q Supports 512 KB Pipeline Burst Sync. 2

nd

Level Cache.

1-1

INTRODUCTION

q CPU L1 / L2 Write-Back cache operation.
q Supports 8 - 768 MB DRAM memory on board.
q Supports 3*168 pin 64/72 Bit DIMM module.
q Supports 2-channel Enhanced PCI IDE ports for 4 IDE Devices.
q Supports 2*COM (16550), 1*LPT (EPP / ECP), 1*1.44MB Floppy port.
q Supports Green function, Plug & Play function.
q Licensed AWARD BIOS, FLASH RAM for BIOS update.
q 30.5cm*17cm, ATX Form factor.
q Supports USB port & PS/2 Mouse and K/B port.
q Supports 3 steps ACPI LED.

1-2

5AX

1.3. PERFORMANCE LIST

The following list of performance data 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 MMX-233 MHz , Cyrix 6x86M2­PR300 , AMD K6-2 300

• DRAM (128 × 1) MB SDRAM (LGS GM72N66841CT7J)

• CACHE SIZE 512 KB

• DISPLAY GA-600 (4MB SGRAM)

• STORAGE Onboard IDE (IBM DHEA-36451)

• O.S. Windows® NT 4.0

• DRIVER

Processor

Winbench98

CPU mark32

FPU Winmark

Business Disk

Hi-End Disk

Business Graphics

Hi-End Graphics

Display Driver at 1024 x 768 x 256 colors x 75Hz.
ALi Bus Master IDE Driver

Intel-MMX 233MHz

(66x3.5)

AMD K6-2 300

(100x3)

Cyrix M-2 PR300

467 756 478
912 979 534

1760 1840 1820

4160 4550 4450

105 153 139
109 156 150

Winstone98

Business

Hi-End

22.5

29.1 25.9

23.8 29.6 26.7

(66x3.5 )

1-3

1.4. BLOCK DIAGRAM

100MHz

100MHz

Cypress
2314

PBSRAM

INTRODUCTION

CPU

Host

Host Data

Cypress
2283

COMA

COMB

AGP
DEVICE

66MHz

66MHz

LPT FDD

14.318Hz

14.318MH

33MHz

14.318Hz

33MHz
48MHz

100MHz

66MHz

ALi

ALi

M1541

PCI Bus

M1543

ISA Bus

8MHz

MA Bus

USB
GPIO

PS/2

Keyboard
Mouse

IDE

MD Bus

33MHz

DRAM

100MHz

PCI

Device

PCI

Device

PCI

Device

PCI

Device

ISA

Device

ISA

Device

ISA

Device

1-4

5AX

1.5. INTRODUCE THE PCI - BUS

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

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.

q

1-5

INTRODUCTION

1.7. What is AGP

The Accelerated Graphics Port (AGP) is a new port on the Host-To-PCI
bridge device that supports an AGP port. The main purpose of the AGP port
is to provide fast access to system memory.

The AGP port can be used either as fast PCI port (32-bits at 66MHz vs. 32­bits at 33MHz) or as an AGP port which supports 2x data-rate, a read queue,
and side band addressing. When the 2x-data rate is used the port can
transmit data at 533Mb/sec (66.6*2*4). The read-queue can be used to
pipeline reads – removing the effects of the reads-latency. Side band
addressing can be used to transmit the data address on a separate line in
order to further speed the transaction.

1-6

5AX

2. SPECIFICATION

2.1. HARDWARE

•

CPU −

•

COPROCESSOR −

•

SPEED −

•

DRAM MEMORY −

•

CACHE MEMORY −

•

I/O BUS SLOTS −

Pentium Processor 100 - 233 MHz, MMX, P54CT,

P54CTB, AMDK5(PR133 / PR166), AMD-K6 (166 /
200 (2.9V) / 233 (3.2V) / 266 (2.2V) / 300 (2.2V) ),
AMD-K6-2 (266 / 300(2.2V)) ), Cyrix / IBM 6x86
(PR166+ / PR200+), Cyrix / IBM 6x86L (PR166+/
PR200+( 2.8V)), Cyrix / IBM 6x86MX ( PR200
(66x2.5 2.9V) (75x2 2.9V) / PR233 (66x3 2.9V)
(75x2.5 2.9V) (83x2) / PR266 (66x3.5) (75x3)
(83x2.5), Cyrix M-2 (300(2.9V)), IDT C6-(200, 225,

266)

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

−

3.52V / 2.0V-3.5V Dual Power Ready.

−

Included in processor.
66 / 75 / 83 / 100MHz system speed.
66 MHz AGP-Bus speed.

−

33 MHz PCI-Bus speed.

−

8 MHz AT bus speed.

−

3 banks 168 pins DIMM module socket on board.

− Use 8 / 16 / 32 / 64 / 128 / 256 MB 50~60 ns DIMM

module DRAM.

− 8 ~ 768 MB DRAM size.

− Supports 3.3V SDRAM / EDO type DRAM.

Supports ECC or Non-ECC type DRAM.

−

16 / 24 / 32 / 64KB L1cache included in CPU.
512 KB 2nd Level cache on board.

−

Supports Write Back cache function for both CPU

−

& on board cache.
4 xMaster / Slave PCI-BUS Slots.
3 x16 bits ISA BUS Slots.

−

1 xAGP Slot.

−

2-1

SPECIFICATION

•

IDE PORTS −

•

I/O PORTS −

•

GREEN FUNCTION −

•

BIOS −

•

DIMENSION −

2.2. SOFTWARE

• BIOS

• O.S.

2-channel Enhanced IDE port on board.(Using

IRQ14,15)
Supports Mode 3,4 IDE & ATAPI CD – ROM.

−

Supports 2 x16550 COM ports. (Using IRQ4, 3)
Supports 1 x EPP/ECP LPT port. (Using IRQ7 or 5

−

and DMA3 or 1)
Supports 1 x 1.44/2.88 MB Floppy port. (Using

−

DMA2 & IRQ6)
Supports PS/2 Mouse. (Using IRQ12 )

−

Suspend mode support.
Green switch & ACPI LED support.

−

IDE & Display power down support.

−

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

−

1Mbit FLASH RAM.
Supports Plug & Play Function.

−

ATX Form Factor, 4 layers PCB.

Licensed AWARD BIOS.

−

AT CMOS Setup, BIOS / Chipset Setup, Green

−

Setup, Hard Disk Utility included.
Operation with MS-DOS, Windows95,

−

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

2.3. ENVIRONMENT

• Ambient Temp.

• Relative Hum.

• Altitude

• Vibration

• Electricity

0°C to +50°C (Operating).

−

0 to +85% (Operating).

−

0 to 10,000 feet (Operating).

−

0 to 1,000 Hz.

−

4.9 V to 5.2 V.

−

Max. 20A current at 5V.

−

2-2

5AX

3. HARDWARE INSTALLATION

3.1. UNPACKING

The mainboard package should contain the following:

• The 5AX mainboard.

• USER’ S MANUAL for mainboard.

• Cable set for IDE

¡B

Floppy.

• Diskette for Mainboard Utility.

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 damage 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.

It is assumed that the chassis is designed for a standard ATX 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.

3-1

3.2. MAINBOARD LAYOUT

HARDWARE INSTALLATION

SL 4

SL 5SL 6

1

AGP

PCI 1PCI 2PCI 3PCI 4

JP4

SL 1SL 2SL 3

COM A

LPT

IDE 2
IDE 1

USBCOM B

CPU

FLOPPY

ATX POWER

×Figure 3.1Ø

3.3. QUICK REFERENCE FOR JUMPERS & CONNECTORS

CN1-6, LPT, JP11, U1

t

CN1 For Primary IDE port.
CN2 For Floppy port.
CN3 For Secondary IDE port.
CN4 For USB port.
CN5 For Serial port2 (COM B){Support Modem Ring On}.
CN6 For Serial port1 (COM A).

LPT For LPT port.

JP11 For PS/2 Mouse & Keyboard Connector.

U1 For ATX Power Connector.

1
JP10

1

PS/2

FAN

BANK 0
BANK 1
BANK 2

S1

3-2

5AX

mode.

JP3 : 2*11 PIN Jumper

PWR

LED HD

JP9

RES SPKR

PWR: Soft Power Connector

On – Off : For POWER ON or Suspend IN / OUT.
On 4 sec : For POWER OFF before VGA Enable or CMOS

RES: Reset Switch

Open: Normal Operation
Short: For Hardware Reset System

LED: Power LED

1

SPKR: Speaker Connector

+

1

PIN 1: anode (+)
PIN 2: cathode (-)
PIN 3: cathode (-)

-

PIN 1: VCC
PIN 2: NC
PIN 3: NC
PIN 4: Data

1 1

1

GNGD

setup select “delay 4sec.” for POWER OFF

HD: IDE Hard Disk Active LED

1

PIN 1: LED anode (+)
PIN 2: LED cathode (-)

3-3

GN: Green Switch

HARDWARE INSTALLATION

1

Open: Normal operation
Short: Entering Green Mode

GD: Green Function Active LED

1

PIN 1: LED canode (-)
PIN 2: LED athode (+)

t JP8: Wake on Lan

Pin No. Function

1 +5V SB
2 GND
3 Signal

t FAN: CPU cooling FAN Power Connector

Pin No. Function

1 GND.
2 +12V
3 SENSE

t JP10: Keyboard Power On Connector (Optional)

Pin No. Function
1,2 Close Enabled Keyboard power on.
2,3 Close Disabled Keyboard power on.

3.4. SRAM INSTALLATION

Sync. SRAM (Pipeline Burst SRAM)

If Sync SRAM Chip is installed, it consists of Pipeline Burst 1 Pc 64 K x 64
512KByte.

3-4

5AX

3.5. DRAM INSTALLATION

The mainboard can be installed with 8 / 16 / 32 / 64 / 128 / 256 MB 168 pins
DIMM module DRAM, and the DRAM speed must be 67~100 MHz for
SDRAM. The DRAM memory system on mainboard consists of bank 0, 1 &
bank 2.

Because the 168 pins DIMM module is 64 bits width, using 1 PCS which can
match a 64 bits system. The total memory size is 8 MB ~ 768 MB DRAM.
The DRAM installation position refer to Figure 3.1, and notice the Pin 1 of
DIMM module must match with the Pin 1 of DIMM socket. Insert the DRAM
DIMM module into the DIMM socket at Vertical angle. If there is a wrong
direction of Pin 1, the DRAM DIMM module couldn't be inserted into socket
completely.

3.6. CPU INSTALLATION AND JUMPERS SETUP

The system speed depends on the frequency of CLOCK GENERATOR. The
user can change SW selection to set up the system speed to 66 / 75 /83 /
100MHz for 3.3V/2.5V Pentium Processor (100-233 MHz) / AMDK5(PR133
/ PR166) / AMD-K6(166/200(2.9V)/233(3.2V)/266/300(2.2V)) / AMD-K6­2(266/300(2.2V)), Cyrix / IBM 6x86 (PR166+/ PR200+), Cyrix / IBM 6x86L
(PR166+/PR200+ (2.8V)), Cyrix / IBM 6x86MX (PR200 (66x2.5 2.9V) (75x2

2.9V)/ PR233 (66x3 2.9V) (75x2.5 2.9V) / PR266 (66x3.5 2.9V) (75x3

2.9V) (83x2.5 2.9V)), Cyrix M-2 PR300 (66*3.5 2.9V); IDT C6-200(66*3) /
225(75*3) / 266(66*4).

The mainboard can use Pentium Processor, P54CT, MMX or P54CTB,
AMDK5, AMD-K6, AMD-K6-2, Cyrix / IBM 6x86, Cyrix M2, IDT C6 CPU, and
the CPU speed must match with the frequency of CLOCK GEN. It will cause
system hanging up if the CLOCK GEN.'S frequency is faster than CPU's.

M

The CPU is a sensitive electric component and it can be easily
damaged by static electricity, so users must keep it away from
metal surface when the CPU is installed onto mainboard.

M

When the user installs the CPU on socket, please notice that the
PIN 1 of CPU is in the same corner as the PIN 1 of socket!

M Before the CPU is installed, the mainboard must be placed on a flat

3-5

HARDWARE INSTALLATION

plane in order to avoid being broken by the pressure of CPU
installation.

SW: CPU INT./ EXT. FREQ. RATIO

t

SW 4 5 6 7

AUTO X X X O

2.0 V X X X X

X OFF 2.1 V X X O X

O ON 2.2 V X O X X

2.3 V X O O X

2.4 V O X X X

SW 2 3 8 2.5 V O X O X

x 1.5 X X X 2.6 V O O X X
x 2 O X X 2.7 V O O O X
x 2.5 O O X 2.8 V X X X O
x 3 X O X 2.9 V X X O O
x 3.5 X X X 3.0 V X O X O
x 4 O X O 3.1 V X O O O
x 4.5 O O O 3.2 V O X X O
x 5 X O O 3.3 V O X O O
x 5.5 X X O 3.4 V O O X O

3.5 V O O O O

MHz SW1 JP4

66
75 OFF
83 ON

100 ON

¬

Note: If Cyrix 6x86 is being used, please check the CPU Date Code after 605.

¬

Note: If you want to run 75, 83 or 100MHz in your system properly, it depends on your

hardware configurations: CPU, SDRAM, Cards, etc.

OFF 2-3

1-2
2-3
1-2

3.7. CMOS RTC & ISA CFG CMOS SRAM

Built-in Real Time Clock (RTC) With 256B CMOS SRAM in M5819.

3-6

5AX

3.8. SPEAKER CONNECTOR INSTALLATION

There is a speaker in AT system for sound purpose. The 4 - Pins connector
SPKR is used to connect speaker. The speaker can work well in both
direction of connector when it is installed to the connector SPKR on
mainboard.

3.9. ACPI LED CONNECTOR INSTALLATION

This mainboard uses the existing power LED as ACPI LED .The ACPI LED
will light on when system is power-on .The ACPI LED is off when the system
is power-off. The ACPI LED will blink when system is in Green mode.This
connector should be installed to ACPI LED jumper of the mainboard in
correct direction.

3.10. HARDWARE RESET SWITCH CONNECTOR 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 RES on mainboard.

3.11. GREEN FUNCTION INSTALLATION

There is one jumper for the purpose of power saving, GN, to indicate the
power saving function . This mainboard uses the existing power LED as
ACPI LED . If the ACPI LED is blinking, the system is in green mode. The

GN switch will force the system into green mode .

3.12. PERIPHERAL DEVICE INSTALLATION

After installation of the device and setup of the jumpers, the mainboard can
be mounted into the case and fixed by screw. To complete the mainboard
installation, the peripheral devices could be installed now. The basic system
needs a display interface card and a storage device.

If a PCI - Bus device is to be installed in the system, any one of three PCI ­Bus slots can be used for Slave or Master PCI - Bus device.

After installing the peripheral device, the user should check everything again
and prepare to power-on the system.

3-7

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

Press DEL to enter SETUP.

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.

4-1

5AX

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

Status Page Setup Menu and Option Page Setup Menu -

Exit current page and return to Main Menu.
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 Setup Menu.
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 Setup Menu.
F6 key Load the default CMOS value from BIOS default table,

only for Option Page Setup Menu.
F7 key Load the default.
F8 key Reserved.
F9 key Reserved.
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 setup functions and exit choices. Use
arrow keys to select among the items and press <Enter> to accept or enter
the sub-menu.

Figure 4.1: Main Menu

• Standard CMOS setup

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.

4-3

5AX

• 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 items of PNP/PCI configuration features.

• Load BIOS defaults

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

• Load setup defaults

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

• Integrated Peripherals

This setup page includes all the items of peripherals features.

• Supervisor Password

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

• User Password

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

• 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.

4-4

BIOS CONFIGURATION

4.5. STANDARD CMOS SETUP MENU

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

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 1994 through 2079

•

Time
The time format in <hour> <minute> <second>.

4-5

5AX

The time is calculated base on the 24-hour military-time clock.
For example, 1 p.m. is 13:00:00.

•

Primary HDDs / Secondary HDDs
The category identify the types of hard disk from drive C to drive F

4 devices that has been installed in the computer.
There are three options for definable type; User, Auto and None .
Type User is user-definable; and type Auto means automatically

detecting HDD's type and None means No IDE HDD installed.
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 from 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
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).

4-6

BIOS CONFIGURATION

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.

2.88M, 3.5 in. 3-1/2 inch double-sided drive; 2.88 megabyte

capacity.

•

Floppy 3 Mode Support (for Japan 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 match 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

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

4-7

5AX

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

4-8

BIOS CONFIGURATION

•

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, 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 64K 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.

Other Memory

This refers to the memory located in the 640 to 1024 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.

4-9

5AX

4.6. BIOS FEATURES SETUP

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 anti-virus program to locate the
problem.

The default value is Disabled.

Enabled

Disabled

•

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
Disabled

Activate automatically when the system boots up causing
a warning message to appear when anything attempts to
access the boot sector or hard disk partition table.
No warning message appears when anything attempts to
access the boot sector or hard disk partition table.

Enable cache function.
Disable cache function.

4-10

BIOS CONFIGURATION

•

Quick Power On Self Test
This category speeds up Power On Self Test (POST) after you power on

the computer. If it set to Enable, BIOS will 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, SCSI.

X1, X2, X3 System will first search for X1 disk drive then X2 disk

drive and then X3 disk drive.

•

VGA Boot From
The default value is PCI.

AGP System will boot from AGP Display Card
PCI System will boot from PCI VGA Card

• 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 type is 40 tracks while 720 , 1.2 and 1.44 are all 80
tracks.

The default value is Enabled.

4-11

5AX

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

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

1.44 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 .

•

Boot Up NumLock Status
The default value is On.

On Keypad is number keys.
Off Keypad is arrow keys.

•

Boot Up System Speed
The default value is High.

High Set Boot Up System Speed: High.
Low Set Boot Up System Speed: Low.

•

Gate A20 Option
The default value is Fast.

Fast Set Boot Up System Speed: High.
Normal Set Boot Up System Speed: Low.

•

Security option
The default value is Setup.

Setup The system will boot and access to Setup will be denied if

the correct password is not entered at the prompt.

System The system will not boot and 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. If the user does not type
anything and just press <Enter>, it will disable security. Once the

4-12

BIOS CONFIGURATION

security is disabled, the system will boot and you can enter Setup

•

PCI/VGA Palette Snoop

value are Disabled.

Enabled

Bus.

Disabled

•

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.

•

HDD S.M.A.R.T. Capability
The default value is Disable.

Enable Enable HDD S.M.A.R.T. Capability
Disable Disable HDD S.M.A.R.T. Capability

•

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.

•

C8000 - CFFFF Shadow / D0000 - DFFFF Shadow
These categories determine whether optional ROM will be copied to

RAM by 16 byte. The default value are Disabled.

13

Optional shadow is enabled.

Disabled

4.7. CHIPSET FEATURES SETUP

Figure 4.4: Chipset Features Setup

• Auto Configuration

The default value is Enabled.

Enabled For General State.

Disabled For Special SDRAM Timing and ISA CLK.

• Host Read DRAM Command Mode.

The default value is Syn.

Bypass Set DRAM Cycle Start at T3 clock after ADS#.

Syn. Set DRAM Cycle Start at T3+1 clock after ADS#.

• AT Bus Clock

The default value is CLK2/4.

CLK2/3 Set AT Bus Clock to CLK2/3.

4-14

7.159MHz

Set AT Bus Clock to CLK2/4.

4-15

DRAM Timing

Normal For normal DRAM timing operation.

For Fastest DRAM timing operation.

Slow For Slower DRAM timing operation.

SDRAM CAS Latency
The default value is AUTO.

For Slower SDRAM DIMM module.

2

Auto CAS latency time will be set automatically if you have

•

Pipelined Function

Enable Enable Pipelined Function.

Disable Pipelined Function.

•

The default value is 64MB.

16MB
32MB Set Graphics Aperture Size to 32MB.

Set Graphics Aperture Size to 64MB.
128MB
256MB Set Graphics Aperture Size to 256MB.

SDRAM Burst X-1-1-1-1-1-1-1
The default value is Enable.

Enable SDRAM Burst X-1-1-1-1-1-1-1.

Disable

4-16

• DRAM Data Integrity Mode

The default value is Disable.

ECC Set DRAM Data Integrity Mode to ECCMode.
Parity Set DRAM Data Integrity Mode to ParityMode.
Disable Disable DRAM Data Integrity Mode.

• Memory Hole at 15M-16M

The default value is Disabled.

Enabled Set Address=15-16MB relocate to ISA BUS.
Disabled Normal Setting.

• ISA Line Buffer

The default value is Enabled.

Enabled Enable ISA Line Buffer.
Disabled Disable ISA Line Buffer.

• Passive Release

The default value is Enabled.

Enabled Enable Passive Release.
Disabled Disable Passive Release.

BIOS CONFIGURATION

• Delay Transaction

The default value is Disabled.

Enabled Enable Delay Transaction.
Disabled Disable Delay Transaction.

• Primary Frame Buffer

The default value is 2MB.

1MB Set Primary Frame Buffer to 1MB.
2MB Set Primary Frame Buffer to 2MB.
4MB Set Primary Frame Buffer to 4MB.
8MB Set Primary Frame Buffer to 8MB.

16MB Set Primary Frame Buffer to 16MB.

ALL Set Primary Frame Buffer to ALL.

Disabled Disable Primary Frame Buffer.

4-17

5AX

• VGA Frame Buffer

Enabled Enable VGA Frame Buffer.

Disable VGA Frame Buffer.

• Data Merge

The default value is Enabled.

Enabled Enable Data Merge.
Disabled Disable Data Merge.

• Auto Detect DIMM/PCI Clk

The default value is Enabled.

Enabled Enabled Auto Detect DIMM/PCI Clk.
Disabled Disabled Auto Detect DIMM/PCI Clk.

• Spread Spectrum

The default value is 0.6% (CNTR)

Disabled Normal

0.6%(CNTR) Set Spread Spectrum 0.6%(CNTR)

4-

BIOS CONFIGURATION

4.8. POWER MANAGEMENT SETUP

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.

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5AX

• PM Control by APM

The default value is Yes.

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

• Video off Option

The default value is Suspend.

Suspend Set Video off if system enter Suspend Mode.
Always On Set Video always on.

• Video Off Method

The default value is DPMS Support.

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

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/H-SYNC automatically.)

• HDD Power Down

The default value is Disable.

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

• Suspend Mode

The default value is Disable.

Disabled Disable Suspend Mode.
1 min - 1
Hour

Setup the timer to enter Suspend Mode.

4-20

BIOS CONFIGURATION

•

Throttle Duty Cycle
The default value is 62.5-75%.

12.5-25% Set Throttle Duty Cycle is 12.5-25%.

37.5-50% Set Throttle Duty Cycle is 37.5-50%.

62.5-75% Set Throttle Duty Cycle is 62.5-75%.
Disable Disable Throttle Duty Cycle.

• FAN off Option

The default value is Suspend.

Suspend Set FAN off if system enter Suspend Mode.
Always On Set FAN always on.

• CPU1 Temperature Select (Optional)

The default value is 75°C / 167°F.

Auto Set CPU Temperature Automatically.

65°C / 149°F Monitor CPU Temp. at 65°C / 149°F. if Temp. >

65°C / 149°F, the speed of CPU will be slow down.

70°C / 158°F Monitor CPU Temp. at 70°C / 158°F. if Temp. >

70°C / 158°F, the speed of CPU will be slow down.

75°C / 167°F Monitor CPU Temp. at 75°C / 167°F. if Temp. >

75°C / 167°F, the speed of CPU will be slow down.

80°C / 176°F Monitor CPU Temp. at 80°C / 176°F. if Temp. >

80°C / 176°F, the speed of CPU will be slow down.

Disable Disable the Function.

• Primary HDD

The default value is Disabled.

Enabled Disable Primary HDD Ports Activity.
Disabled Enable Primary HDD Ports Activity.

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5AX

4-22

• Floppy

The default value is Disabled.

Enabled Enable Floppy Ports Activity.
Disabled Disable Floppy Ports Activity.

• COM Ports

The default value is Enable.

Enabled Enable COM Ports Activity.

• Keyboard

The default value is Enable.

Enabled Enable Keyboard Activity.

• LPT Ports Activity

The default value is Disabled.

Enabled Enable LPT Ports Activity.
Disabled Disable LPT Ports Activity.

BIOS CONFIGURATION

• Power Button

The default value is InstantOff.

Instantoff Soft switch ON/OFF for POWER ON/OFF.
Delay 4Sec. Soft switch ON 4sec. for POWER OFF.

4-23

5AX

4.9.PNP/PCI CONFIGURATION

Figure 4.6: PCI Slot Configuration

• PNP OS Installed

The default value is No.

Yes Enable PNP OS Installed function.
No Disable PNP OS Installed function.

• Resources Controlled by

The default value is Manual.

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

channels) used by legacy ISA DEVICE.

Auto BIOS automatically use these PnP rescuers.

• Reset Configuration Data

The default value is Disabled.

Disabled Disable this function.
Enabled Enable clear PnP information in ESCD.

4-24

BIOS CONFIGURATION

• 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).

• PCI IRQ Actived By

The default value is Level.

Level Set PCI IRQ Actived by Level.

Edge Set PCI IRQ Actived by Edge.

• PCI IDE IRQ Map To

The default value is PCI-AUTO.

PCI-AUTO Map PCI IDE IRQ to PCI slot automatically.

ISA Map PCI IDE IRQ to ISA slot.

•

Primary/Secondary IDE INT#

A Set INTA for primary/secondary PCI IDE.
B Set INTB for primary/secondary PCI IDE.
C Set INTC for primary/secondary PCI IDE.
D Set INTD for primary/secondary PCI IDE.

4-25

5AX

4.10. LOAD BIOS DEFAULTS

Figure 4.7: Load BIOS Defaults

•

Load BIOS Defaults

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

4-26

BIOS CONFIGURATION

4.11. LOAD SETUP DEFAULTS

Figure 4.8: 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 BIOS DEFAULTS step is
recommended.

4-27

5AX

4.12. INTEGRATED PERIPHERALS

Figure 4.9: Integrated peripherals

∗When KB PWR ON/OFF Function set Enabled, KB PWR ON/OFF

Password : Enter will show up.

* These three items will show up when RTC Alarm Controller is enabled.

• On-Chip Primary IDE

The default value is Enabled.

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

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

The default value is Auto.

Auto BIOS will automatically detect the IDE HDD Accessing

mode.

Mode0~4 Manually set the IDE Accessing mode.

4-28

BIOS CONFIGURATION

•

Slave PIO (for onboard IDE 1st channel).
The default value is Auto.

Auto BIOS will automatically detect the IDE HDD Accessing

mode.

Mode0~4 Manually set the IDE Accessing mode.

• Master Ultra DMA (for onboard IDE 1sd channel).

The default value is Auto.

Auto BIOS will automatically detect the IDE HDD Accessing

mode.

Disabled Disable UDMA function.

• Slave Ultra DMA (for onboard IDE 1sd channel).

The default value is Auto.

Auto BIOS will automatically detect the IDE HDD Accessing

mode.

Disabled Disable UDMA function.

• On-Chip Secondary IDE

The default value is Enabled.

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

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

The default value is Auto.

Auto BIOS will automatically detect the IDE HDD Accessing

mode.

Mode0~4 Manually set the IDE Accessing mode.

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5AX

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

The default value is Auto.

Auto BIOS will automatically detect the IDE HDD Accessing

mode.

Mode0~4 Manually set the IDE Accessing mode.

• Master Ultra DMA (for onboard IDE 2nd channel).

The default value is Auto.

Auto BIOS will automatically detect the IDE HDD Accessing

mode.

Disabled Disable UDMA function.

• Slave Ultra DMA (for onboard IDE 2nd channel).

The default value is Auto.

Auto BIOS will automatically detect the IDE HDD Accessing

mode.

Disabled Disable UDMA function.

• IDE HDD Block Mode

The default value is Enabled.

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

•

On-Chip USB Controller
The default value is Enabled.

Disabled Disable USB Controller.
Enabled Enable USB Controller.

4-30

BIOS CONFIGURATION

•

USB Keyboard Support

The default value is Disabled.

Disabled Disable USB Keyboard Support.
Enabled Enable USB Keyboard Support.

•

Ring / Wake On Lan Control

The default value is Enable.

Enabled Enable Modem Ring On / Wake On Lan function.
Disabled Disable this function.

•

Onboard FDC Controller

The default value is Enabled.

Enabled Enable onboard Floppy port.
Disabled Disable onboard Floppy port.

•

Onboard Serial Port 1

The default value is 3F8/IRQ4.

Auto BIOS will automatically setup the port 1 address.
3F8/IRQ4 Enable onboard Serial port 1 and address is 3F8.
2F8/IRQ3 Enable onboard Serial port 1 and address is 2F8.
3E8/IRQ4 Enable onboard Serial port 1 and address is 3E8.
2E8/IRQ3 Enable onboard Serial port 1 and address is 2E8.
Disabled Disable onboard Serial port 1.

4-31

5AX

• Onboard Serial Port 2

The default value is 2F8/IRQ3.

Auto BIOS will automatically setup the port 2 address.
3F8/IRQ4 Enable onboard Serial port 2 and address is 3F8.
2F8/IRQ3 Enable onboard Serial port 2 and address is 2F8.
3E8/IRQ4 Enable onboard Serial port 2 and address is 3E8.
2E8/IRQ3 Enable onboard Serial port 2 and address is 2E8.
Disabled Disable onboard Serial port 2.

• Onboard Parallel port

The default value is 378/IRQ7.

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

• KB PWR ON/OFF Function

The default value is Disabled.

Disabled Disabled KB PWR ON/OFF Function
Enabled Enabled KB PWR ON/OFF Function

KB PWR ON/OFF Password

The default value is Enter.

MKB PWR ON/OFF Function Set Enabled, KB PWR ON/OFF Password :

Enter will show up. When users enabled KB PWR ON/OFF Function,
please set password with three different characters, and press the
three different characters password at the same time.

For example, if users set “abc” as password , then he would press
“a” “b” “c” at the same time. (a-b-c is hot key) .

4-32

• RTC Alarm Controller

The default value is Disabled.

Disabled Disable this function.
Enabled Enable alarm function to POWER ON system.

If RTC Alarm Controller is Enabled.

Date Alarm : NA,1~31
Hour Alarm : 0~24
MinuteAlarm : 0~59

BIOS CONFIGURATION

4-33

5AX

4.13. SUPERVISOR / 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.

Figure 4.10: Password Setting

Type the password, up to eight characters, and press <Enter>. The
password typed now will clear 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.

4-34

BIOS CONFIGURATION

4.14. IDE HDD AUTO DETECTION

Figure 4.11: IDE HDD Auto Detection

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

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 LARGE mode for
DOS partition larger than 528 MB.

4-35

5AX

4.15. SAVE & EXIT SETUP

Figure 4.12: 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.

4-36

BIOS CONFIGURATION

4.16. EXIT WITHOUT SAVING

Figure 4.13: Exit Without Saving

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

Type "N" will return to Setup Utility.

4-37

DECLARATION OF CONFORMITY

Eric Lu

Per FCC Part 2 Section 2. 1077(a)

FCC Compliance Statement:

This equipment has been tested and found to

Responsible Party Name: G.B.T. INC.

Address: 18305 Valley Blvd., Suite#A

LA Puent, CA 91744

Phone/Fax No: [phone]/ [phone]

hereby declares that the product

Product Name:

Mother Board

GA-5AX

Model Number:

Conforms to the following specifications:

FCC Part 15, Subpart B, Section 15.107(a) and Section 15.109(a),
Class B Digital Device

Supplementary Information:

This device complies with part 15 of the FCC Rules. Operation is subject to the
following two conditions: (1) This device may not cause harmful interference,
and (2) this device must accept any inference received, including interference
that may cause undesired operation.

Representative Person's Name: ERIC LU

Signature:

Date: MAY. 29, 1998

comply with 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 in
residential installations. This equipment
generates, uses, and can radiate radio
frequency energy, and if not installed and used
in accordance with the instructions, 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 interference to radio or television equipment 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

-Move the equipment away from the receiver

-Plug the equipment into an outlet on a circuit different from that to
which the receiver is connected

-Consult the dealer or an experienced radio/television technician for
additional suggestions

You are cautioned that any change or modifications to the equipment not
expressly approve by the party responsible for compliance could void Your
authority to operate such equipment.

This device complies with Part 15 of the FCC Rules. Operation is subjected
to the following two conditions 1) this device may not cause harmful
interference and 2) this device must accept any interference received,
including interference that may cause undesired operation.

Declaration of Conformity

We, Manufacturer/Importer

(full address)

G.B.T. Technology Trading GMBH

Ausschlager Weg 41, 1F, 20537 Hamburg, Germany

( description of the apparatus, system, installation to which it refers)

(reference to the specification under which conformity is declared)

in accordance with 89/336 EEC-EMC Directive

EN 55011 Limits and methods of measurement EN 61000-3-2* Disturbances in supply systems caused

EN55013 Limits and methods of measurement EN61000-3-3* Disturbances in supply systems caused

EN 55014 Limits and methods of measurement EN 50081-1 Generic emission standard Part 1:

EN 55015 Limits and methods of measurement EN 55081-2 Generic emission standard Part 2:

EN 55020 Immunity from radio interference of EN 55082-2 Generic immunity standard Part 2:

EN 55022 Limits and methods of measurement ENV 55104 Immunity requirements for household

DIN VDE 0855 Cabled distribution systems; Equipment EN 50091- 2 EMC requirements for uninterruptible
part 10 for receiving and/or distribution from power systems (UPS)
part 12 sound and television signals

of radio disturbance characteristics of EN60555-2 by household appliances and similar
industrial, scientific and medical (ISM electrical equipment “Harmonics”
high frequency equipment

of radio disturbance characteristics of EN60555-3 by household appliances and similar
broadcast receivers and associated electrical equipment “ Voltage fluctuations”
equipment

of radio disturbance characteristics of Residual, commercial and light industry
household electrical appliances,
portable tools and similar electrical EN 50082-1 Generic immunity standard Part 1:
apparatus Residual, commercial and light industry

of radio disturbance characteristics of Industrial environment
fluorescent lamps and luminaries

broadcast receivers and associated Industrial environment
equipment

of radio disturbance characteristics of appliances tools and similar apparatus
information technology equipment

declare that the product

Mother Board

GA-5AX

is in conformity with

CE marking (EC conformity marking)

The manufacturer also declares the conformity of above mentioned product

with the actual required safety standards in accordance with LVD 73/23 EEC

EN 60065 Safety requirements for mains operated EN 60950 Safety for information technology equipment

EN 60335 Safety of household and similar EN 50091-1 General and Safety requirements for

electronic and related apparatus for including electrical business equipment
household and similar general use

electrical appliances uninterruptible power systems (UPS)

(Stamp)

Manufacturer/Importer

Date : MAY. 29, 1998 Name : Rex Lin

Signature

Rex Lin

: