Aopen AX4BG2 User Manual

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AX4B-G2 / AX4B-G2N

DOC. NO.: AX4BG2N-OL-E0205A

Overview

Installation

Hardware

Drivers &

Utilities

BIOS Setup

AWARD

Glossary

Troubleshooting &

Technical Support

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WWhhaatt’’ss iinn tthhiiss mmaannuuaall

AX4B-G2 / AX4B-G2N.......................................................................................................................1

What’s in this manual ...................................................................................................................................................... 2

You Must Notice .............................................................................................................................................................. 8

Before You Start..............................................................................................................................................................9

Overview ....................................................................................................................................................................... 10

Feature Highlight........................................................................................................................................................... 11

Quick Installation Procedure .........................................................................................................................................14

Motherboard Map .......................................................................................................................................................... 15

Block Diagram ............................................................................................................................................................... 16

Hardware Installation................................................................................................................ 17

About “Manufacturer Upgrade Optional” and “User Upgrade Optional”… ...................................................................... 18

JP14 Clear CMOS Data ................................................................................................................................................ 19

CPU Installation ............................................................................................................................................................ 20

CPU Jumper-less Design .............................................................................................................................................. 23

CPU and System Fan Connector (with H/W Monitoring) ............................................................................................... 27

JP28 Keyboard/Mouse Wake-up Enable/Disable Jumper .............................................................................................. 28

DIMM Sockets ............................................................................................................................................................... 29

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Front Panel Connector .................................................................................................................................................. 31

ATX Power Connector...................................................................................................................................................32

AC Power Auto Recovery .............................................................................................................................................. 33

IDE and Floppy Connector ............................................................................................................................................ 34

IrDA Connector .............................................................................................................................................................36

AGP (Accelerated Graphic Port) Expansion Slot ........................................................................................................... 37

AGP Protection Technology........................................................................................................................................... 38

WOL (Wake on LAN) ..................................................................................................................................................... 39

Support 10/100 Mbps LAN onboard (AX4B-G2N only) .................................................................................................. 41

CNR (Communication and Network Riser) Expansion Slot ............................................................................................ 42

PC99 Color Coded Back Panel .....................................................................................................................................43

Support 2nd USB Port .................................................................................................................................................... 44

Chassis Intrusion Connector .........................................................................................................................................45

CD Audio Connector ..................................................................................................................................................... 46

Modem Audio Connector ............................................................................................................................................... 47

AUX-IN Connector......................................................................................................................................................... 48

Front Audio Connector .................................................................................................................................................. 49

Battery-less and Long Life Design................................................................................................................................. 50

CPU Over-current Protection......................................................................................................................................... 51

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Hardware Monitoring ..................................................................................................................................................... 52

AOConfig Utility ............................................................................................................................................................. 53

Resetable Fuse ............................................................................................................................................................. 55

2200µF Low ESR Capacitor .......................................................................................................................................... 56

Layout (Frequency Isolation Wall) ................................................................................................................................. 58

Enlarged Aluminum Heatsink ........................................................................................................................................ 59

Vivid BIOS technology................................................................................................................................................... 60

Driver and Utility .......................................................................................................................61

Auto-run Menu from Bonus CD Disc ............................................................................................................................. 62

Installing Intel® Chipset Software Installation Utility...................................................................................................... 63

Installing Intel IAA Driver ............................................................................................................................................... 64

Installing Onboard Sound Driver ...................................................................................................................................66

Installing LAN Driver (AX4B-G2N only) .........................................................................................................................67

Installing Hardware Monitoring Utility ............................................................................................................................ 68

ACPI Suspend to Hard Drive......................................................................................................................................... 69

ACPI Suspend to RAM (STR)........................................................................................................................................ 74

AWARD BIOS.............................................................................................................................. 76

About BIOS Function Description… .............................................................................................................................. 77

How To Use Award™ BIOS Setup Program................................................................................................................... 78

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How To Enter BIOS Setup ............................................................................................................................................. 80

BIOS Upgrade under Windows environment .................................................................................................................81

Overclocking.............................................................................................................................. 83

VGA Card & Hard Disk .................................................................................................................................................. 84

Glossary ....................................................................................................................................85

AC97 ............................................................................................................................................................................. 85

ACPI (Advanced Configuration & Power Interface) ....................................................................................................... 85

AGP (Accelerated Graphic Port).................................................................................................................................... 85

AMR (Audio/Modem Riser)............................................................................................................................................ 86

AOpen Bonus Pack CD ................................................................................................................................................. 86

APM (Advanced Power Management)........................................................................................................................... 86

ATA (AT Attachment) ..................................................................................................................................................... 86

ATA/66 ..........................................................................................................................................................................86

ATA/100 ........................................................................................................................................................................ 87

ATA/133 ........................................................................................................................................................................ 87

BIOS (Basic Input/Output System) ................................................................................................................................ 87

Bus Master IDE (DMA mode) ........................................................................................................................................ 88

CNR (Communication and Networking Riser)................................................................................................................ 88

CODEC (Coding and Decoding) .................................................................................................................................... 88

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DDR (Double Data Rated) SDRAM ...............................................................................................................................88

DIMM (Dual In Line Memory Module) ............................................................................................................................ 89

DMA (Direct Memory Access)........................................................................................................................................ 89

ECC (Error Checking and Correction) ........................................................................................................................... 89

EDO (Extended Data Output) Memory ..........................................................................................................................89

EEPROM (Electronic Erasable Programmable ROM) .................................................................................................... 90

EPROM (Erasable Programmable ROM)....................................................................................................................... 90

EV6 Bus ........................................................................................................................................................................ 90

FCC DoC (Declaration of Conformity) ...........................................................................................................................90

FC-PGA (Flip Chip-Pin Grid Array) ................................................................................................................................ 90

Flash ROM .................................................................................................................................................................... 91

FSB (Front Side Bus) Clock .......................................................................................................................................... 91

I2C Bus .......................................................................................................................................................................... 91

IEEE 1394..................................................................................................................................................................... 92

Parity Bit .......................................................................................................................................................................92

PBSRAM (Pipelined Burst SRAM) ................................................................................................................................. 92

PC-100 DIMM ............................................................................................................................................................... 93

PC-133 DIMM ............................................................................................................................................................... 93

PC-1600 or PC-2100 or PC-2700 DDR DRAM .............................................................................................................. 93

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PCI (Peripheral Component Interface) Bus ...................................................................................................................93

PDF Format................................................................................................................................................................... 93

PnP (Plug and Play) ...................................................................................................................................................... 94

POST (Power-On Self Test) ..........................................................................................................................................94

RDRAM (Rambus DRAM) .............................................................................................................................................94

RIMM (Rambus Inline Memory Module) ........................................................................................................................94

SDRAM (Synchronous DRAM) ...................................................................................................................................... 95

Shadow E2PROM .......................................................................................................................................................... 95

SIMM (Single In Line Memory Module) ......................................................................................................................... 95

SMBus (System Management Bus) ............................................................................................................................... 95

SPD (Serial Presence Detect) ....................................................................................................................................... 96

Ultra DMA ..................................................................................................................................................................... 96

USB (Universal Serial Bus) ........................................................................................................................................... 96

VCM (Virtual Channel Memory)..................................................................................................................................... 97

ZIP file........................................................................................................................................................................... 97

Troubleshooting......................................................................................................................... 98

Technical Support ...................................................................................................................102

Product Registration ...............................................................................................................105

How to Contact Us .................................................................................................................. 106

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YYoouu MMuusstt NNoottiiccee

Adobe, the Adobe logo, Acrobat is trademarks of Adobe Systems Incorporated.

AMD, the AMD logo, Athlon and Duron are trademarks of Advanced Micro Devices, Inc.

Intel, the Intel logo, Intel Celeron, Pentium II, Pentium III, Pentium 4 are trademarks of Intel Corporation.

Microsoft, Windows, and Windows logo are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries.

All product and brand names used on this manual are used for identification purposes only and may be the registered trademarks of their respective owners.

All of the specifications and information contained in this manual are subject to change without notice. AOpen reserves the right to revise this publication and to make reasonable changes. AOpen assumes no responsibility for any errors or inaccuracies that may appear in this manual, including the products and software described in it.

This documentation is protected by copyright law. All rights are reserved. No part of this document may be used or reproduced in any form or by any means, or stored in a database or retrieval system without prior written permission from AOpen Corporation. Copyright

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BBeeffoorree YYoouu SSttaarrtt

This Online Manual will introduce to the user how this product is installed. All useful information will be described in later

chapters. Please keep this manual carefully for future upgrades or system configuration changes. This Online Manual is saved

in PDF format

get free download from Adobe web site

Although this Online Manual is optimized for screen viewing, it is still capable for hardcopy printing, you can print it by A4 paper

size and set 2 pages per A4 sheet on your printer. To do so, choose File > Page Setup and follow the instruction of your printer

driver.

Thanks for the help of saving our earth.

, we recommend using Adobe Acrobat Reader 4.0 for online viewing, it is included in Bonus CD disc or you can

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OOvveerrvviieeww

Thank you for choosing AOpen AX4B-G2 / AX4B-G2N motherboard. The AX4B-G2 / AX4B-G2N is Intel® Socket 478

motherboard (M/B) based on the ATX form factor featuring the Intel® 845D (Brookdale) chipset

built in the M/B, the AX4B-G2 / AX4B-G2N motherboard can support Intel

(FSB) clock. In the AGP performance, it has one AGP slot which supports 1.5V AGP interface with 4x SBA/Data Transfer and

2x/4x Fast Write capability and pipelined spilt-transaction long burst transfer up to 1056MB/sec. According to different

customer’s requirements, the Intel 845D chipset memory interface supports DDR SDRAM devices with densities of 64, 128, 256,

512Mb DDR SDRAM DIMM modules and the maximum memory size can be up to 2 GB. The onboard IDE controller supports

Ultra DMA

flexibility can be achieved by taking advantage of the Com

and Network Riser (CNR) card option that allows audio, mo

on a single baseboard design. More than that, on the strengt

Intel 82562ET PHY on board, which is an highly-integr

Platform LAN Connect device, it provides 10/100M bps Eth

for office and home use (For AX4B-G2N only). Besides

AX4B-G2 / AX4B-G2N has an AC97

providing high performance and magic surround stereo

sound to let people enjoy working with it. Now, let’s enjoy

all features from AOpen AX4B-G2 / AX4B-G2N

motherboard.

33/66/100 mode and the transfer rate up to 1

CODEC chipset onbo

0MB/s. Further

munication

dem

h of

ated

rnet

the

ard,

Socket 478 Pentium® 4 and 400 MHz Front Side Bus

. As high performance chipset

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FFeeaattuurree HHiigghhlliigghhtt

CPU

Supports Intel® Socket 478 Pen designed for Socket 478

techno

logy.

tium® 4 1.4GHz~2.4GHz+ with 400MHz Front Side Bus (FSB)

Chipset

With the Intel

and prove

leading-edg

chipset's I/O Controller Hub (ICH2) features two USB controllers supporting four USB ports.

845D (Brookdale) chipset, Intel delivers a discrete graphics solution with all the performance, innovative features

n reliability of the Intel

e AGP graphics solution for Intel

845D chipset. With its highly scalable design, the new 845D chipset offers an ideal,

Pentium® 4 processor platforms. And the smart integration in the Intel 845D

Expansion Slots

ncluding five 32-bit/33MHz PCI, one CNR and one AGP 4X slots. The PCI

I local bus throughput can be up to 132MB/s. The

Communication & Ne

Modem/Audio card. The

speed which supports data transfer rate up to 1056MB/s. AX4B-G2 / AX4B-G2N motherboard includes one 1.5V AGP expansion

slot with 4x SBA/Data Transfer and 2x/4x Fast Write capability. For AD and SBA signaling, AX4B-G2 / AX4B-G2N motherboard

can support 4X mode. Of five PCI slots provided, all of them are master PCI slots with arbitration and decoding for all integrated

functions and LPC bus.

ctworking Riser (CNR)

Accelerated Graphics Port (AGP)

slot provided from AX4B-G2 / AX4B-G2N can support CNR interface for a

specification provides a new level of video display sophistication and

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Memory

Provides three 184-pin DDR SDRAM DIMM sockets that support up to 2GB of DDR266 compliant DDR SDRAM (Synchronous

Dynamic Random Acces

s Memory). You may install 64, 128, 256, 512Mb DDR SDRAM DIMM modules into each socket.

Ultra DMA 33/66/100 Bus Master IDE

Comes with an on-board PCI Bus Master IDE controller with two connectors that supports four IDE devices in two channels,

upports Ultra DMA

33/66/100, PIO Modes 3 and 4 and Bus Master IDE DMA Mode 5, and supports Enhanced IDE devices.

On-board AC’97 Sound

AX4B-G2 / AX4B-G2N uses the RealTek ALC101 AC97 sound chip. This on-board audio includes a complete audio recording

nd playback system.

Watch Dog Timer

Includes AOpen “Watch Dog Timer” function that can auto-reset system in 4.8 seconds when you fail to system overclocking.

Four USB Connectors

Provides two ports, four USB connectors for USB interface devices, such as mouse, keyboard, modem, scanner, etc.

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AGP Protection Technology

With AGP Protection Technology implemented, this motherboard will automatically detect the voltage of AGP card and prev

your chipsets from being burnt out.

Power Management/Pl

Supports the power management function that confirms to the power-saving standards of the U.S. Environmental

Agency (EPA) Energy Star program. It also offers Plug-and-Play

making the system much user-friendli

Hardware Monitoring Mana

Supports CPU or system fans status, temperature and voltage monitoring and alert, through the on-board hardware monitor

module.

ug and Play

Protection

, which helps save users from configuration problems, thus

er.

gement

ent

Enhanced ACPI

Fully implement the ACPI standard for Windows® 98/ME/2000/XP series compatibility, and supports Soft-Off, STR (Suspend to

RAM, S3), STD (Suspend to Disk, S4) features.

Super Multi-I/O

Provides

two high-speed UART compatible serial ports and one parallel port with EPP and ECP capabilities. UART can also be

irected from COM1 to the Infrared Module for the wireless connections.

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QQuuiicckk IInnssttaallllaattiioonn PPrroocceedduurree

This page gives you a quick procedure on how to install your system. Follow each step accordingly.

1. Installing CPU

2. Installing System )

3. Connecting Front Panel Cable

4. Connecting IDE and Floppy Cable

5. Connecting ATX Power Cable

6. Connecting Back Panel Cable

7. Power-on and Load BIOS Setup Default

8. Setting CPU Frequency

9. Reboot

10. Installing Operating System (such as Windows 98)

11. Installing Driver and Utility

and Fan

Memory (DIMM

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(

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Onboard

Blac Connector

Green: AUX-IN Connector

Red: MODE C

32-bit PCI Ex ns

JP14 CMOS

Chassis Intru

Front el Connector

AC’97 CODEC

k: CD-IN

M-

N Connector

Front A io

CNR pansion Slot

2ndUSB Connector

Connector

ion Slot x5

rDA

Connector

bit F

lash ROM

ear Jumper

sion

Connector

WOL Connector

Pan

ATA/33/66/100

IDE Connector x2

FDD Connector

Motherboard Map

PC99 Colored Back Panel

Resetable Fuse

JP28 Keyboard/Mouse Wakeup Enable/Disable Jumper Intel 82562ET PHY

For AX4B-G2N only)

2200μF Low ESR Capacitors 4-pin 12V. ATX Power Connector

FAN2 Connector

AGP 4x Expansion Slot (for 1.5V AGP card)

478-pin CPU socket with Voltage and Frequency Auto-detection that support Intel

1.4~2.4GHz+ CPU

Intel®845D chipset (Brookdale) CPU Fan Connector with H/W Monitoring Function

184-pin DIMM Socket x2 supports DDR266 DDR SDRAM maximum up to 2 GB

ATX Power Connector

Pentium® 4

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OOnnlliinnee MMaannuuaall

BBlloocckk DDiiaaggrraamm

Socket 478

Intel

Pentium 4

CPU

AGP 4X Slot

400MHz System

Bus

LAN connect Component

(For AX4B-G2N only)

Floppy Disk Drive x2

DDR266 DD

Up to 2GB

DIMM Socket x2

R SDRAM

Intel 845D

USB

Connector x4

PCI Bus

Intel 82562ET

1stUSB Port

2ndUSB Port

32-bit PCI Slot x5

ATA

33/66100

Primary

Channel

Secondary

Channel

ICH2

Winbond W83627

AC97

CODEC

AC Link

Firmware Hub

2Mbit Flash EEPROM

Parallel Port

Serial Port x2

CNR Slot

IDE D

rive x4

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HHaarrddwwaarre

This cha

pter describes jumpers, connectors and hardware devices of this motherboard.

Note: Electrostatic discharge (ESD) can damage your processor, disk drives, expansion boards, and

other components. Always observe the following precautions before you install a system componen

1. Do not remove a component from its protective packaging until you are ready to install it.

2. Wear a wrist ground strap and attach it to a metal part of the system unit before handling a

component. If a wrist strap is not available, maintain contact with the system unit throughou

procedure requiring ESD protection.

IInnssttaallllaattiioonn

t any

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AAbboouutt ““MMaannuuffaaccttuurreerr UUppggrraaddee OOppttiioonnaall”” aanndd ““UUsseerr UUppggrraaddee OOppttiioonnaall””……

When you read this online manual and start to assemble your computer system, you

“Manufacturer Upgrade Optional”, and some are called “User Upgrade Optional”. Though a

amazing and powerful features, in some situations, these powerful features are not used to every user. Hence, we changed

ome key feature ed by

s s as “Manufacturer Upgrade Optional” for you to choose. Some optional functions that can be upgrad

sers, we call the call them

Manufacturer Up de “User Upgrade

“

Optional” compon s,

may find some of functions are called

ll AOpen motherboards include many

m “User Upgrade Optional”. As for those optional functions that can’t be upgraded by ourselves, we

gra Optional”. If needed, you can contact our local distributors or resellers for purchasing

ent and again you can visit AOpen official web site: www.aopen.com

for more detail information.

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(

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JJPP1144 CClleeaarr CCMMOOSS DDaattaa

You can clear CMOS to restore system default setting. To clear the CMOS, follow the procedure below.

1. Turn off the system and unplug the AC power.

2. Remove ATX power cable from connector PWR2.

3. Locate JP14 and short pins 2-3 for a few seconds.

4. Return JP14 to its normal setting by shorting pins 1 & pin2.

5. Connect ATX power cable back to connector PWR2.

Pin 1

Norma

default

Tip: When should I Clear CMOS?

Clear CMOS

1. Boot fail because of overclocking…

2. Forget password…

3. Troubleshooting…

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CCPPUU IInnssttaallllaattiioonn

This motherboard supports Intel® Pentium 4 Socket 478 series CPU. Be careful of CPU orientation w

socket.

ll up the CPU socket lever and

1. Pu

p to 90-degree angle.

Locate

Pin 1 in the socket and look for a cut edge on the CPU upper

nterfa

ce. Match Pin 1 and cut edge, then insert the CPU into the socket.

Note: These pictures are for example on not exactly be the same motherboard.

ly, it may

CPU socket

Lever

CPU pin 1 and

cut edge

hen you plug it into CPU

CPU cut edge

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3. Press down the CPU CPU installation.

Note: This picture is for example only, it may not exactly be the same motherboard.

socket lever and finish

CPU cut edge

Note: This socket supports

icro-FC-PGA2 package CPU, which

is the

Intel. Other forms of CPU package

are impossible to be f itted in.

Note: If you do not match the CPU

socket Pin 1 and CPU cut edge well, it

damage the CPU.

latest CPU package developed

Page 22

AAXX44BB-

CCP

his moth

TT erboard comes with a retention module attached on the CPU socket when shipped, we strongly recommend you to

nstall AOpen

CPU ly as the following pictures shown.

1. Gently put the CPU Fan down on the

UU FFaann IInnssttaallllaattiioonn

erboard comes with a retention module attached on the CPU socket when shipped, we strongly recommend you to

Fan correct Fan correct

retention module with clips aligning

retention module with clips aligning correctly to the four corners.

correctly to the four corners.

GG22 // A

special designed CPU Fan as shown below on the retention module for better heat dissipation. Please install the

XX44BB--GG22NN OOnnlliinnee MMaannuuaall

2. Pressing d one on the

own the four clips with force one by retention module.

Clip

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C ssiiggnn

CPU VID signal and SMbus clock generator provide CPU voltage auto-detection and allows the user to set the CPU frequency

through the BIOS setup

designs are eliminated. There will be no worry of wr no g CPU voltage detection.

, therefore no jumpers or switches are used. The disadvantages of the Pentium based jumper-less

Intel

Pentium 4 CPU

CPU VID signal

Power Regulator

(Automatically generates CPU voltage)

CPPUU JJuummppeerr--lleessss DDee

Socket 478

CPU voltage

Clock Generator

CPU Freq. Rat

BIOS

Controlled

Circuit

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A ””

With this motherboard, AOpen provides a very special, useful feature for overclockers. When

you power-on the system, the BIOS will check last system POST

BIOS will enable “Watch Dog Timer” function immediately, and set the CPU FSB

user’s setting that stored in the BIOS. If system failed in BIOS POST, the “Watch Dog Timer”

will reset the system to reboot in five seconds. Then, BIOS will detect the CPU’s default

requency and POST again. With this special feature, you can easily overclock your system to get higher system performance,

nd without removing the cover of system housing to set the jumper to clear CMOS data when your system hanged.

AOpen

Watch Dog

Timer

Enable/Disable

AOOppeenn ““WWaattcchh DDoogg TTiimmeerr

Signal

from BIO

Countdown about

5 seconds if fails

in POST

Reset Signal

Clock Generator

status. If it succeeded, the

frequency by

BIOS

CPU ID Signal

CPU

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CCPPUU CCoorree VVoollttaaggee AAuuttoo DDeetteeccttaabblle

The CPU core voltage will be automatically detected. It is not nec ess ary to s et CPU c ore voltage.

SSeettttiinngg CCPPUU FFrreeqquueennccyy

BIOS Setup > Frequency/Voltage Control > CPU Clock Setting

This motherboard is CPU jumper-less design, you can s et CP U frequenc y through t he BI OS s etup, and no jum pers or s witc hes are needed.

CPU Ratio CPU FSB

Core Frequency = CPU FSB Clock * CPU Ratio PCI Clock = CPU FSB Clock / Clock Ratio

AGP Clock = PCI Clock x 2

8x, 9x, 10x,…22x, 23x, 24x 100 MHz

Home

Tip: If your system hangs or fails to boot

because of overclocking, simply use <Home> key to restore the default setting or you can w ait the A Open “Watch Dog Timer” reset the system after five seconds and system will auto-detect hardware again.

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Northwood CPU CPU Core Frequency FSB Clock System Bus Ratio

Pentium 4 1.6G 1600MHz 100MHz 400MHz 16x Pentium 4 1.6G 1600MHz 133MHz 533MHz 12x Pentium 4 1.7G 1700MHz 133MHz 533MHz 13x Pentium 4 1.8G 1800MHz 100MHz 400MHz 18x Pentium 4 2.0G 2000MHz 100MHz 400MHz 20x Pentium 4 2.2G 2200MHz 100MHz 400MHz 22x Pentium 4 2.4G 2400MHz 100MHz 400MHz 24x Pentium 4 2.4G 2400MHz 133MHz 533MHz 18x

Willamette CPU CPU Core Frequency FSB Clock System Bus Ratio

Pentium 4 1.5G 1500MHz 100MHz 400MHz 15x Pentium 4 1.6G 1600MHz 100MHz 400MHz 16x Pentium 4 1.7G 1700MHz 100MHz 400MHz 17x Pentium 4 1.8G 1800MHz 100MHz 400MHz 18x Pentium 4 1.9G 1900MHz 100MHz 400MHz 19x Pentium 4 2.0G 2000MHz 100MHz 400MHz 20x

Warning: Intel® 845D chipset supports maximum 400MHz (100MHz*4) system bus and 66MHz AGP clock; higher clock setting may cause serious system damage.

Note: Since t he latest

rocessor, Northwood, would detect the clock ratio automatically, you may not be able to adjust the clock ratio in BIOS manually.

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CCPPUU aanndd SSyysstteemm FFaann CCoonnnneeccttoorr ((wwiitthh HH//WW MMoonniioorriinngg))

Plug in the CPU fan cable to the 3-pin CPU FAN connector. If you have chassis fan, y n al

or FAN3 (AUX F onnector

an) c .

FAN3 Connector

GND +1

ENSOR

ou ca

FA ec

N2 Conn

CPU Fan Connector

Note: e CPU fans do not have

Som

sensor in, so that cannot support

hardw onitoring function.

are m

so plug it on System Fan (FAN2)

tor

GND +12V SENSOR

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JP28

Disable

(Default)

JJPP2288 KKeeyybbooaarrdd//MMoouussee WWaakkee--uupp EEnnaabbllee//DDiissaabbllee JJuummppeer

This motherboard provides keyboard / mouse wake-up function. You can use JP28 to enable or disable this function, which

could resume your system from suspend mode with keyboard or mouse installed. The factory default setting is set to

“Disable”(2-3), and you may enable this function

by setting the jumper

to 1-2.

KB/Mouse Wake-up

Enable

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MM SSoocckkeettss

DDIIM

This motherboard has two 184-pin DDR DIMM sockets that allow you to install DDR266 memory up to 2 GB. Both ECC and

Non-ECC DDR SDRAM are supported, but you can’t install them both on DIMM. Otherwise, it will cause serious damage on

memory sockets or SDRAM module.

Warning: Pl le-side DDR

SDRAM is not allowed to be installed on both

DIMM2 nd DIMM3. if you have had

installed two double-side DDR SDRAM on

them, the system can only r side DDR

SDRAM on ea DIMM2 an However,

you are not recommended to do erwise,

it will cause serious damage on memory

sockets or SDRAM module.

ease note that doub

Buta

ead one

d DIMM3.

so, oth

DIMM1 DIMM2

Page 30

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HHooww ttoo IInnssttaallll MMeemmoorryy MMoodduulleess

Please follow the procedure as shown below to finish memory installation.

1. Make sure the DIMM module’s pin face down and match the socket’s size as depicted below.

2. Insert the module straight down to the DIMM slot with both

in place.

. Repeat step 2 to finish additional DIMM modules installation.

Ta b

52 pins40 pins

hands and ly

press down firmly until the DIMM module is secure

Note: The tabs of the DI

will close-up to hold the

place when the DIMM t

the slot’s bottom.

MM slot

DIMM in

ouches

Page 31

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FFrroonntt PPaanneell CCoonnnneeccttoorr

Attach the power LED, speaker, power and reset switch connectors to th corresponding pins. If you enable “Suspend Mode” item in BIOS Setup, the ACPI & Power LED will keep flashing while the system is in suspend m ode.

Locate the power switch cable from your ATX housing. It is 2-pin female connector from the housing front panel. Plug this connector to the soft-power switch connector mark ed SPW R.

Suspend Type ACP I L ED

Power on Suspend (S) or Suspend to RAM (S3) Blinking between green and red

Suspend to Disk (S4) The LED will be turned off

NC NC

+5V IDE LED IDE LED

+5V

GND

5VSB SPWR ACPI LED GND ACPILED NC NC GND RESET GND

IDE LED

Speaker

SPWR

CPI & PWR

LED

Reset

SPEAKER

Page 32

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AATTXX PPoowweerr CCoonnnneeccttoorr

This motherboard com es with a 20-pin and 4-pi n ATX power connector. Make sure you plug in the right direction. W e s trongly recommend you to connec t t he 4-pin 12V ATX connector before connecting the 20-pin ATX power connector and use standard power supply specially designed for Pent ium 4 s ystem.

Pin1

Ground 12V 12V

4-Pin 12V ATX Power Connector

COM COM

-5V +5V +5V

+12V

5VSB

PO-O

COM

+5V

20-Pin Power Connector

COM PS-ON COM

-12V +3.3V

+3.3V +3.3V COM +5V

COM

Page 33

AAXX44BB--GG22 /

AAXX44BB--GG22NN

AACC PPoowweerr AAuuttoo RReeccoov

erry

OOnnlliinnee MMaannuuaall

A traditional ATX system should remain at power off stage when AC power resumes from power failure. This design

inconvenient for a network server or workstation, without an UPS, that needs to keep power-on. This motherboard implemen

an AC Power Auto Recovery function to solve this problem.

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IIDDEE aanndd FFllooppppyy CCoonnnneeccttoo r

Connect 34-pin floppy cable and 40-pin IDE cable to floppy connector FDC and IDE connector. The blue connector is IDE1 for

clear identification. Be careful of the pin1 orientation. Wrong orientation may cause system damage.

Pin 1

Slave (4th)

Pin 1

Primary

Slave (2nd)

Secondary

Primary Master

(1st)

IDE 1 (Primary)

IDE 2 (Secondary)

Secondary

Master (3rd)

ATA 33/66/100

IDE Connector

FDD Connector

Page 35

33/66/100 is required

XX44BB--GG22 // AAXX44BB--GG22NN

OOnnlliinnee MMaannuuaall

IDE1 is also known as the primary channel and

make a total of four devices. In order to work tog

Slave mode. Either one can be the hard disk or the CDROM. The setting as master or slave mode depends on the jumper

your IDE device, so please refer to your hard disk and CDROM manual accordingly.

his mot supports ATA33

T herboard

modes. The us is 16-bit, which means every transfer is two

Mode Clock Period Clock

PIO mode 0 30ns 20 600ns (1/600ns)

PIO mode 1 30ns 13 383ns (1/383ns)

PIO mode 2 30ns 8 240ns

PIO mode 3 30ns 6 180ns (1/180ns) x 2byte = 11.1MB/s

DMA mode 1 30ns 5 150ns (1/150ns) x 2byte = 13.3MB/s

DMA mode 2 30ns 4 120ns (1/120ns) x 2byte = 16.6M

ATA 33 30ns 4 120ns (1/120ns) x 2byte x2 = 33MB/s

ATA 66 30ns 2 60ns (1/60ns) x 2byte x2 = 66MB/s

ATA100 20ns 2 40ns (1/40ns) x 2byte x2 = 100MB/s

IDE b

30ns 4 120ns (1/120ns) x 2b B/s PIO mode 4 yte = 16.6M

Warning: The specification of the IDE cable is a maximum of 46cm (18 inches);

make sure your cable does not exceed this length.

, ATA6 6 or ATA100 IDE devices. Following table lists the transfer rate of IDE PIO and DMA

Count

IDE2 as the secondary channel. Each channel supports two IDE devices that

ether, the two devices on each channel must be set differently to Master and

bytes.

Cycle Time Data T

ransfer Rate

x 2byte = 3.3MB/s

x 2byte = 5.2MB/s

yte = 4.30ns 16 480ns (1/480ns) x 2b 16MB/s DMA mode 0

Tip:

1. For better signal quality,

it is recommended to

the ice

3MB/s (1/240ns) yte = 8. x 2b

B/s

far end side dev

to master mode and

follow the suggested

ence to install your

sequ

vice. Please refer

new de

to above diagram

To achieve the best

performance of Ultra

DMA 33/66/100 hard

disks, a special 80-wires

IDE cable for Ultra DMA

set

Page 36

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IIrrDDAA CCoonnnneeccttoorr

The IrDA connector can be configured to support wireless infrared module, with this module and application software such as

Laplink or Windows 95 Direct Cable Connection, the user can transfer files to or from laptops, notebooks, PDA devices and

printers. This connector supports HPSIR (115.2Kbps, 2 meters) and ASK-IR (56Kbps).

Install the infrared module onto the IrDA connector and enable the infrared function from BIOS Setup, UART Mode, make sure

to have the correct orientation when you plug in the IrDA connector.

+5V

R_TX

IrDA Connector

Pin 1

KEY GND IR_RX

Page 37

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AAGGPP ((AAcccceelleerraatteedd GGrraapphhiicc PPoorrtt)) EExxppaannssiioonn SSlloott

The AX4B-G2 / AX4B-G2N provides an AGP AX4B-G2 / AX4B-G2N provides an AGP 4x slot. The AGP 4x is a bus interface targeted for high-performance 3D

graphic. AGP supports only memory read/write operation and single-master single-slave one-to-one only. AGP uses both rising

and falling edge of the 66MHz clock, for 2X AGP, the data transfer rate is 66MHz x 4bytes x 2 = 528MB/s. AGP is now moving

to AGP 4x mode, 66MHz x 4bytes x 4 = 1056MB/s. Please note that this AGP expansion slot support 1.5V AGP card only.

Page 38

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AAGGPP PPrrootteeccttiioonn TTeecchhnnoollooggyy

With the outstanding R&D ability of AOpen and its specially developed circuit, AX4B-G2 / AX4B-G2N implements an all new

technology to protect your motherboard from being damaged by over-voltaging of AGP card. With AGP Protection Technology

implemented, this motherboard will automatically detect the voltage of AGP card and prevent your chipsets from being burnt out.

Please note that if you install a AGP card with 3.3V, which is not supported by Intel 845D, the AGP LED (or LED3) onboard will

light up to warn you the possible damage with that exceeding voltage. You may contact the vendor of your AGP card for further

support.

Warning: It is strongly recommended

not to install a AGP card with 3.3V, wh

is not supported by Intel 845, the AGP

LED (or LED3) will light up to warn

ossible damage.

the

AGP LED

ich

you

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WWOOLL ((WWaakkee oonn LLAANN))

This feature is very similar as Wake On Modem, but it goes through local area network. To use Wake On LAN function, you must

have a network card with chipset that supports this feature, and connect a cable from LAN card to motherboard WOL connector.

The system identification information (probably IP address) is stored on network card and because there is a lot of traffic on the

Ethernet, you need to install network management software, such as ADM, for the checking of how to wake up the system. Note

that, at least 600mA ATX standby current is required to support the LAN card for this function.

WOL Connector

+5VSB

GND

LID

Page 40

AAXX44BB--GG22 // AAXX44BB--GG22NN OOnnlliinnee MMaannuuaall

WOL

Connector

(Mot

herboard Side)

Note: This picture is f it may not exactly be the same motherboard. or example only,

WOL Connector

(Ethernet Card Side)

Page 41

AAXX44BB--GG22 // AAXX44BB--GG22NN OOnnlliinnee MMaannuuaall

SSuuppppoorrtt 1100//110000 MMbbppss LLAANN oonnbbooaarrdd ((AAXX44BB--GG22NN oonnllyy))

tt 1100//110000 MMbbppss LLAANN oonnbbooaarrdd ((AAXX44BB--GG22NN oonnllyy))

The South Bridge ICH2 includes on board, which is

a highly-integrated Platform LAN C me use, the Ethernet

RJ45 connector is located on top o hen linking to network

and blinking

100Mbps mode

when transferring dat a

. To enable or disab

a fast Ethernet controller on chip. On the strength of Intel 82562ET PHY

onnect device, it provides 10/100M bps Ethernet for office and ho

f USB connectors. The green LED indicates the link mode, it lights w

a. The orange LED indicates the transfer mode, and it lights when dat

le this function, you may simply adjust it through BIOS.

Green/ACT

is transferring in is transferring in

Orange/Speed

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CCNNRR ((CCoommmmuunniiccaattiioonn aanndd NNeettwwoorrkk RRiisseerr)) EExxppaannssiioonn SSlloott

CNR is a riser card specification to replace the AMR (Audio/Modem Riser) that supports V.90 analog modem, multi-chann

audio, and phone-line based networking. Owing to CPU computing power getting stronger, the digital processing job can b

implemented in main chipset and share CPU power. The analogy conversion (CODEC

circuit design, which is put on CNR card. This motherboard implements sound CODEC on board, but reserve CNR slot for th

option of modem function. Note that you can still use PCI modem card.

) circuit requires a different and separa

Page 43

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PPCC9999 CCoolloorr CCooddeedd BBaacckk PPaanneell

The onboard I/O devices are PS/2 Keyboard, PS/2 Mouse, COM1 and COM2, RJ45 LAN jack, Printer, four USB, AC97 sound

and game ports. The view angle of drawing shown here is from the back panel of the housing.

PS/2 Mouse

Connector

RJ45 10/100

LAN Jack

(AX4B-G2N only)

SPP/EPP/ECP

Parallel Port

MIDI/Game Port

PS/2 Keyboard

PS/2 Keyboard: For standard keyboard, w PS/2 Mouse: For PC-Mouse, which is using USB Port: Available for connect Parallel Port: To connect with SPP/ COM1/COM2 Port: To connect with point VGA Connector: To connect with PC mon Speaker Out: To External Speaker, L MIC-In: From Microphone. MIDI/Game Port: For 15-pin PC joystick, gam

Connector

ine-In: Comes from the signa

USB

Connectors

1 Port

COM

hich is using a PS/2 plug.

a PS/2 plug.

ing USB devices.

ECP/EPP printer.

ing devices, modem or others serial devices.

itor.

Earphone or Amplifier.

l sources, such as CD/Tape player.

e pad or MIDI devices.

COM 2 Port

MIC-In

Line-In

Speaker Ou

Page 44

AAXX44BB--GG22 // AAXX44BB--GG22NN OOnnlliinnee MMaannuuaall

nnd

SSuuppppoorrtt 2

This motherboard provides four USB connectors to connect USB devices, such as mouse, keyboard, modem, printer, etc. There

are two connectors on the PC99 back panel. You can use proper cable to connect the other USB connector to the back panel or

front panel of chassis.

UUSSBB PPoorrtt

Pin 1

USBPW

USB_FP_

USB2 Connector

1 2

P0-

P0+

USBPWR0 USB_FP_P1-

USB_FP_P1+

GND

USB_FP_OC0

Page 45

AAXX44BB--GG22 // AAXX44BB--GG22NN OOnnlliinnee MMaannuuaall

CChhaassssiiss IInnttrruussiioonn CCoon

The “CASE OPEN” header provides chassis intrusion-monitoring function. To make this function works, you have to enable it in

the system BIOS, connect this header to a sensor somewhere on the chassis. So, whenever the sensor is triggered by lights or

the opening of the chassis, the system will send out beep sound to inform you. Please be informed that this useful function only

applies to advanced chassis, you may purchase a

function.

nneeccttoorr

n extra sensor, attach it on your chassis, and make a good use of this

Sensor

Chassis Intrusion

GND

Connector

Page 46

AAXX44BB--GG22 // AAXX44BB--GG22NN OOnnlliinnee MMaannuuaall

CCDD AAuuddiioo CCoonnnneeccttoorr

This connector is used to connect CD Audio cable from CDROM or DVD drive to onboard sound.

CCDD--IINN CCoonnnneeccttoorr

GND

Note: Though som

support “Digit

to use Open Jukebo

it is a MUST

the motherboard.

al Audio” through I wever, in order

to insert audio cable to CD-IN connector on

e of the f Windows

x player, wh under BIOS,

latest version o

DE bus. Ho

ich is driven

Page 47

AAXX44BB--GG22 // AAXX44BB--GG22NN

OOnnlliinnee MMaannuuaall

ccttoorr

OUT

MMooddeemm AAuuddiioo CCoonnnne

This connector is used to connect Mono In/MIC Out cable from internal modem card to onboard s

Mono In, and the pin 3-4 is MIC Out. Please note that there is no standard for this kind of conne

modem cards implement this connector.

MMO

DDEEMM--CCNN CCoonnnneecct

MONO IN

GND

MIC

orr

ound circuit. The pin 1-2 is

ctor yet, only some internal

Page 48

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AAUUXX--IINN CCoonnnneeccttoorr

This connector is used to connect MPEG Audio cable from MPEG card to onboard sound.

AAUUXX--IINN CCoonnnneecct

GND

oorr

Page 49

AAXX44BB--GG22 // AAXX44BB--GG22NN OOnnlliinnee MMaannuuaall

FFrroonntt AAuuddiioo CCoonnnneeccttoorr

If the housing has been designed with an audio port on the front panel, you’ll be able to co

through this connector. By the way, please remove 5-6 and 9-10 jumper caps from

connecting the cable. Please do not remove these 5-6 and 9-10 yellow jumper caps if there’s no audio port on the front

panel.

Pin 1

AUD_MIC

AUD_MIC_BIAS

AUD_FPOUT_R

AUD_FROUT_L

1 2

AUD

AUD_

KEY

AUD

9 10

nnect onboard audio to front panel

the Front Audio Connector before

_GND

VCC

R T_R

ET_L

Nobete: Please remove the jumper cap from the Front Panel Audio Connector

fore you connect the cable. Do not remove this yellow jumper cap if

housin

without an audio port on the front panel.

Page 50

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Auto Switch

RTC

CMOS

Battery ATX Stand-by Power

uto switching to ATX standby power as long as AC power line is plugged. This smart design increases battery life if you still plug battery on motherboard.

Backup by EEPROM

BBaatttteerryy--lleessss aanndd LLoonngg LLiiffee DDeessiiggnn

This Motherboard implements Flash ROM and a special circuit that allows you to save your current CPU and CMOS Setup configurations without the need of a battery. The RTC (real time clock) can also keep running as long as the power cord is plugged. If you lose your CMOS data by accident, you can just reload the CMOS configurations from Flash ROM and the system will recover as usual.

Flash

ROM

(Real Time Clock)

00:00:00

Page 51

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CCPPUU OOvveerr--ccuurrrreenntt PPrrootteeccttiioonn

Over Current Protection has been popularly implemented on ATX 3.3V/5V/12V switching power supply for a while. However, new generation CPU is able to use regulator of different voltages to transfer 12V to CPU voltage (for example, to 2.0V). This motherboard is with switching regulator onboard that supports CPU over-current protection, and it applies to 3.3V/5V/12V power supply for providing full line over-c urrent prot ect ion.

Note: Although we have implemented protection circuit try to prevent any human operating mistake, there is still certain risk that CPU, memory, HDD, add-on cards installed on this motherboard may be damaged because of c omponent failure, human operating error or unknown nature reason. AOpen cannot guaranty the protection circuit will always work perfectly.

ATX

Switching

Power

Supply

5V (Protected by power supply)

3.3V (Protected by power supply)

12V (Protected by power supply)

Onboard

Power

Regulator

Over-Current

Protection

CPU Core Voltage

Circuit

Page 52

AAXX44BB--GG22 // AAXX44BB--GG22NN OOnnlliinnee MMaannuuaall

Fan

CPU

Fan Speed

Detection Circuit

CPU Temperature

CPU Voltage

System Voltage

AOpen H/W Monitoring

Utility

HHaarrddwwaarree MMoonniittoorriinngg

This motherboard implements a hardware monitoring system. As you turn on your system, this smart design will continue to

monitor your system’s working voltage, fan status and CPU temperature. If any of these systems’ status goes wrong, there will

be an alarm through the chassis external speaker or buzzer of motherboard (if existed) to warn the user.

Power

Page 53

AAXX44BB--GG22 // AAXX44BB--GG22NN OOnnlliinnee MMaannuuaall

1. The system page shows the detail in motherb system, the processor, and BIOS version.

2. The PCI device page shows the configurations of all PCI devices ins motherboard.

formation of the

oard, the operating

talled on your

AAOOCCoonnffiigg UUttiilliittyy

Open always dedicated to provide users a much friendlier computer environment. We now bring you a comprehensive system

detective utility. AOconfig is a Windows based utility with user-friendly interface that allows users to obtain information of the

operation system and hardware such as motherboard, CPU, memory, PCI devices and IDE devices. The powerful utility also

displays the version of BIOS and firmware for your convenience of maintenance.

Moreover, AOconfig allows users to save information in *.BMP or *.TXT format which users may collect the system information

in detail and send them AOpen directly for technical support or further diagnosis of system problem.

Page 54

AAXX44BB--GG22 // AAXX44BB--GG22NN OOnnlliinnee MMaannuuaall

3. This page presents the IDE devices information, such as the serial number, the manufacturer, the firmware version, and capacity.

4. From this page, users m ay obtain the technical support information of AOpen.

Moreover, detailed information could be saved in .bmp or .txt format.

NOTE: AOconfig can be us ed in Window s 98S E/ ME, NT4.0/ 2000, or ev en the lat est Window s X P. Please be informed that AOconfig can only be operated in a system equipped wit h an AOpen motherboard. Meanwhi le, al l applications must be clos ed before s tarting AOconfi g.

Page 55

AAXX44BB--GG22 // AAXX44BB--GG22NN OOnnlliinnee MMaannuuaall

Reesseettaabbllee FFuussee

RReesseettaabbllee FFuussee

Traditional motherboard has fuse for Keybo rd a

Traditional motherboard has fuse for Keybo rd aa nd USBa nd USB port to prevent ove

onboard that when s p ill canno l

malfunctioning.

With expensive Re rb normal functio

job.

it is broken (function a

setable Fuse, the mothe

r-current or

rotecting the motherboard), user st

oard can be resumed back to

Resetable

Fuse

shortage. These fuses are soldered

t replace it and the motherboard is stil

n after the fuse had done its protection

Page 56

AAXX44BB--GG22 // AAXX44BB--GG22NN OOnnlliinnee MMaannuuaall

2222000

The quality of low ESR capacitor (Low Equivalent Series Resistance) during high frequency operation is very important for the

stability of CPU power. The idea of where to put these capacitors is another know-how that requires experience and detail

calculation.

Not only that, AX4B-G2 / AX4B-G2N implements 2200μF capacitors, which is much larger than normal capacitor (1000 and 1500μf) and it provides bett

FF LLooww EES

RR CCaappaacciittoorr

er stab

ility for CPU power.

Page 57

AAXX44BB--GG22 // AAXX44BB--GG22NN OOnnlliinnee MMaannuuaall

The pow r circuit of the CPU core voltage must be

Pentium III, or when overclocking). A typical CPU co

and 2.140V. That is, the transient must be below 280mV. Below is a timing diagram captured by a Digital Storage Scope, it

shows the voltage transient is only 143mv even when maximum 60A current is applied.

Note: This diagram for example only, it may not exactly be the same motherboard.

e checked to ensure system stability for high speed CPUs (such as the new

re voltage is 2.0V, so a good design should control voltage between 1.860V

Page 58

AAXX44BB--GG22 // AAXX44BB--GG22NN OOnnlliinnee MMaannuuaall

LLaayyoouutt ((FFrreeqquueennccyy IIssoollaattiioonn WWaallll))

Note: This diagram for example only, it may not be exactly the s am e as t his m otherboard.

For high frequency operation, especially overclocking, layout is the most important factor to make sure chipset and CPU working in stable condition. The layout of this motherboard implements AOpen’s unique design called “ Frequency Isolation Wall”. Separating each critical portion of motherboard into regions where each region operates in a same or similar frequency range to avoid cross talk and frequency interference between each region’s operations and condition. The trace length and route must be calculated carefully. For example, the clock trace must be equal length (not necessarily as short as possible) so that clock skew will be controlled within few a pico second (1/10

Sec)

Page 59

AAXX44BB--GG22 // AAXX44BB--GG22NN OOnnlliinnee MMaannuuaall

EEnnllaarrggeedd AAlluummiinnuumm HHeeaattssiinnkk

Cool down CPU and Chipset is important for system reliability. Enlarged

specially when you are trying to over clocking the CPU.

aluminum heat sink provides better heat consumption

Page 60

AAXX44BB--GG22 // AAXX44BB--GG22NN OOnnlliinnee MMaannuuaall

VViivviidd BBIIOOSS tteecchhnnoollooggyy

Unlike earlier graphic POST screen which

VividBIOS deals with graphics and texts sep

design, VividBios now brings you a beautifu

POST screen.

n addition, the limited sp ional BIOS can only show

pace-consuming and uncompre generation, to recognize the

maller-sized GIF format an

Vivid BIOS shares the same fu e same EzSkin utility to

hange your Vivid BIOS screen logo c shown beside

our model name on the BIOS dowy

motherboard supports this innovat

ace of BIOS ROM is another big issue. When all of the tradit

d even dynamic- ing GIF animation.

ndamental technology with Open JukeBox CD Player, you may use th

or to download your favorite Open JukeBox skin. If you see this little

Have you been fed up with the conservative and immutable POST screen? Let’s rule out th

tradition idea that POe ST screen are stiff and frigid, and let AOpen show you the newly

developed VividBIOS to experience the lively vivid colorful POST screen!

could occupy the whole screen and mask text information during POST, AOpen

arately, and makes them running simultaneously during

l and sleek 256 colors screen without missing any import

ssed Bit has considerately tuned the BIOS to next

map, AOpen

show

nload page, http://www.aopen.com/tech/download/mbbios/default.htm

ive feature!

POST. With this innovative

ant information shown on

, it is assured that your

Page 61

AAXX44BB--GG22 // AAXX44BB--GG22NN

OOnnlliinnee MMaannuuaall

iittyy

and Windows 98.

D l

There are motherboard drivers and utilities included in AOpen Bonus CD disc. You don’t need to install all of them in order to

98) before you can install any drivers or utilities. Please refer to your operation system’s installation guide.

lDrriivveerr aanndd UUttii

sh the hardware installation, you have to install your operation system firstboot your system. But after you fini (such as Windows

Note: Please follow recommended procedure

to install Windows 95

Page 62

AAXX44BB--GG22 // AAXX44BB--GG22NN OOnnlliinnee MMaannuuaall

AAuuttoo--rruunn MMeennuu ffrroomm BBoonnuuss CCDD DDiisscc

oose the utility and driver and select model name. You can use the auto-run menu of Bonus CD disc. Ch

Page 63

AAXX44BB--GG22 // AAXX44BB--GG22NN OOnnlliinnee MMaannuuaall

IInnssttaalllliinngg IInntteell®® CChhiippsseett SSooffttwwaarree IInnssttaallllaattiioonn UUttiilliittyy

Windows 95/98 cannot recognize this chipset, because it was released before the Intel 845D chipset.

INF Update Utility from the Bonus Pack CD disc auto-run menu to eliminate the “?” marks.

You can install the Intel

Page 64

AAXX44BB--GG22 // AAXX44BB--GG22NN

OOnnlliinnee MMaannuuaall

IInnssttaalllliinngg IInntteell IIAAAA DDrriivveerr

You can install Intel IAA Driver to increase the performance of software applications and reduce PC boot times. You can find it in

the AOpen Bonus Pack

CD disc.

Page 65

AAXX44BB--GG22 // AAXX44BB--GG22NN OOnnlliinnee MMaannuuaall

Page 66

AAXX44BB--GG22 // AAXX44BB--GG22NN OOnnlliinnee MMaannuuaall

IInnssttaalllliinngg OOnnbbooaarrdd SSoouunndd DDrriivveerr

This motherboard comes with AC97 CODEC. You can find the audio driver from the Bonus Pack CD disc auto-run menu.

Page 67

AAXX44BB--GG22 // AAXX44BB--GG22NN OOnnlliinnee MMaannuuaall

IInnssttaalllliinngg LLAANN DDrriivveerr ((AAXX44BB--GG22NN oonnllyy))

You may find Intel’s Intel PRO Network Connections to install the LAN Driver step by step.

Page 68

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IInnssttaalllliinngg HHaarrddwwaarree MMo

You can install Hardware Monitoring Utility to monitor CPU temperature, fans and system v

unction is automatically implemented by the BIOS and utility software. No hardware installation is needed.

onittoorriinngg UUttiilliittyy

oltage. The hardware monitoring

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AACCPPII SSuussppeenndd ttoo HHaarrdd Drriivvee

ACPI Suspend to Hard Drive is basically controlled by Windows operation system. It saves your current work (system st

memory and screen image) into hard disk, and then the system can be totally power off. Next time, when power is on, y

resume your original work directly from hard disk within few seconds without go through the Windows boot

our application aga your memory

y in. If your memory is 64MB, normally, you need to reserve at least 64MB HDD space to save

image.

When power-on next time:

When go into Suspend:

System Image &

Status

System Image &

Status

Hard

Save into

Restore within seconds

Disk

Hard

Disk

atus,

ou can

ing process and run

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System Requirement

1. AOZVHDD.EXE 1.30b or later.

2. Delete config.sys and autoexec.bat.

Fresh installation of Windows 98 on a new system

ute "Setup.exe /p j" to install Windows 98

1. Exec

2. After Windows 98's installation is complete, go to the Control Panel > Power Management.

a. Set Power Schemes > Syst

b. Click on "Hibernate" and select "Enable Hibernate Support" then "Apply".

c. Click on the "Advanced" tab, you'll see "H er Buttons". Note tha ption will only be seen after step

b mentioned above has been completed; ot ly "S d "Shutdow be shown. Select "Hibernate" and

"Apply".

. Clean boot into DOS and run AOZVHDD utility.

a. If you assign the whole disk to your Win 98 system (FAT 16 or FAT 32), please run "aozvhdd /c /file". Please remember

sufficient free space has if you have 64 MB DRAM and 16 MB VGA card installed, the

system needs at least 80 MB free space. The utility will locate the space automatically.

b. If you assign an individual partition fo n "aozvhdd /c /part Of course, the system needs to

provide unformatt

. Reboot system.

5. You've already implemented ACPI Suspend to-Hard Drive. Click "Start > Shut Down > Standby" then the screen will go off

immediately. And 1 minute or so will be taken for the system to save what's in the memory to the hard drive; the larger the

ed an empty partition.

em Standby to "Never".

ibernate" on "Pow

herwise on

to be reserved in the disk, e.g.

t this o

n" will tandby" an

ition". r Win 98, please ru

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memory size the longer this process will take.

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Changing from APM to ACPI (Windows 98 only)

1. Run "Regedit.exe"

a. Go through the following path

HKEY_LOCAL_MACHINE

SOFTWARE

MICROSOFT

WINDOWS

CURRENT VERSION

DETECT

b. Select "ADD Binary" and name it as "ACPIOPTION".

c. Right click and select Modify, add "01" after "0000" to make it "0000 01".

d. Save changes.

2. Select "Add New Hardware" under Control Panel. Allow Windows 98 to detect new hardware. (It will find "ACPI BIOS" and

remove "Plug and Play BIOS")

3. Reboot system.

4. Clean boot into DOS and run "AOZVHDD.EXE /C /File"

Changing from ACPI to APM

1. Run "Regedit.exe"

a. Go through the following path

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HKEY_LOCAL_MACHINE

SOFTWARE

MICROSOFT

WINDOWS

CURRENT VERSION

DETECT

ACPI OPTION

b. Right click and sel ect "Modif y, change "01" to "02" to mak e it "0000 02".

c. Save changes.

2. Select "Add New Hardware" under Control Panel. Allow Windows 98 to detect new hardware. (It will find "Plug and Play BIOS" and remove "ACPI BIOS")

3. Reboot system.

4. Run "Add New Hardware" again and it will find "Advanced Power Management Resource".

5. Click "OK".

Tip: "02" means Windows 98 is ACPI acknowledged but the ACPI function is dis abled.

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AACCPPII SSuussppeenndd ttoo RRAAMM ((SSTTRR))

This motherboard supports ACPI Suspend to RAM function. With this function, you can resume your original work directly from DRAM without going through the Windows 98 booting process and run your application again. Suspend to DRAM saves your current work in the system memory, it is faster than Suspend to Hard Drive but requires power supplied to DRAM, while Suspend to Hard Drive requires no power.

When go into Suspend:

When power-on next time:

System Image & Status

in the DRAM

System Image & Status

in the DRAM

Backup by 3.3V Power

Power back to

Other System

Devices

Other System

Devices

Power loss

Power back to w

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T the procedures as below:

o implement ACPI Suspend to DRAM, please follow

System Requirement

1. An ACPI OS is required. Currently, except Windows 95 and Windows NT, all other Windows Systems support ACPI.

2. The Intel

Chipset Software Installati

on Utility must have been installed properly.

Procedures

. Changed the foll

1 owing BIOS settings.

BIOS Setup > Power Management Setup > ACPI Function: Enabled

BIOS Setup > Power Management Setup > A pend Type: S3.

2. Go to Control Panel > Pow

3. Press power butt the system.

on or standby button to wake up

er Management. Set “Power Buttons” to “Standby”.

CPI Sus

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AAWWAARRDD BBIIOOSS

System parameters can be modified by going into BIOS Setup menu, this menu allows you to configure the system parameters

d saan ve the configuration into the 128 bytes CMOS area, (normally in the RTC chip or in the main chipset).

The AwardBIOS™ that installed in the Flash ROM

BIOS provides critical low-level support for standard devices such as hard disk drives, serial and parallel ports.

Most BIOS settin

BIOS still can’t fi

e pro setup.

th cess of configuring your system using

Currently there are two kinds of beep sound when system fails to boot at POST. The first type of beep sound consists of a single

long OS from initializing video screen for displaying any

beep and two short beeps, indicating a video error has failed BI

additional information. The 2

occurred. significances.

To ent r to BIOS setup menu

g of AX4B-G2 / AX4B-G2N had been optimized by AOpen’s R&D engineering team. But, the default setting of

ne-tune the chipset controlling entire system. Hence, the rest of this chapter is intended to guide you through

type of beep sound is a single long beep that beeping repeatedly, signaling a DRAM error has

You may look over the indicated error according to different beep

, press <Del> when POST (Power-On Self Test) screen is shown on your monitor.

of the motherboard is a custom version of an industry standard BIOS. The

Note: Because the BIOS code is the most often

changed part of the motherboard design, the BIOS

information contained in this manual may be

different with actual BIOS that come with your

motherboard.

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AAbboouutt BBIIOOSS FFuunnccttiioonn DDeessccrriippttiioonn……

AOpen always dedicates to give users a

program into the BIOS Flash ROM. When

at right side of screen. Hence, you don’t need read this manual while you changing the BIOS setting.

more friendly computer system. Now, we include all function descriptions of BIOS setup

you select one function of BIOS setup program, the function description will appeared

Menu Items Select Window Item Function Description Window

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HHooww TToo UUssee AAwwaarrdd™™ BBIIOOSS SSeettu

Generally, you can use the arrow keys to highlight items that you want to choose, then press <Enter> key to select, and use the

<Page Up> and <Page Down> key to change setting value. You also can press <F1> key for help and press <Esc> key to quit Award™ BIOS setup program. The following table provides details about how to use keyboard in the Award BIOS setup

program. By the way, all products of AOpen also provides a special function in the BIOS setup,

selecting preferred menu language to display.

Key Description

Page Up or + Changing setting to next value or increase the value.

Page Down or - Changing setting to previous value or decrease value.

Enter Select the item.

Esc 1. In main menu: Quit and don’t save any change.

2. In sub menu: Exit current menu to main menu.

Up Arrow Highlight previous item.

Down Arrow Highlight next item.

Left Arrow Move the light bar to left side of menu.

Right Arrow Move the light bar to right side of menu.

F1 Get menu or item help description.

F3 Changing menu language.

F5 Load previous setting value from CMOS.

up PPrr

p ooggrraamm



you can press <F3> key

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Key Description

F6 Load Setup Default setting value from CMOS.

F7 Load turbo setting value from CMOS.

F10 Save changed setting and exit setup program.

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OOnnlliinnee MMaannuuaall

TToo EEnntteerr BBIIOOSS SSeettuupp

HHooww TToo EEnntteerr BBIIOOSS SSeettuupp

After you finish the setting of jumpers and conne

POST (Power-On Se t). Choose "Load

Del

lf Tes Setup Defaults" for recommended optimal performance.

Warning: Please avoid of using "Load Turbo Defaults", unless

you are sure your system components (CPU, DRAM, HDD, etc.)

are good enough for turbo setting.

ct correct cables. Power on and enter the BIOS Setup, press <Del> during ct correct cables. Power on and enter the BIOS Setup, press <Del> during

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BBIIOOSS UUppggrraaddee uunnddeerr WWiinnddoowwss eennvviirroonnmmeenntt

With outstanding R&D ability of AOpen, we now bring you a whole new BIOS Flash wizard ---- EZWinFlash. With an eye to users convenience, EZWinFlash combines the

BIOS binary code and flash module together, so the only thing you have to do is just clicking on the utility you downloaded from web and let it helps you complete the flash process automatically. EZWinFlash detects your motherboard and checks the BIOS version cleverly to prevent your system from any possible failure. Moreover, EZWinFlash has been taken into consideration to go with any windows platform you might be using, no matter if you’re using Windows 95/98, 98SE/ ME, NT4. 0/2000, or even the l ates t Windows XP.

In the meanwhile, in order to provide a much more user-friendly operating environment, AOpen EZWinFlash is natively designed to have multi-language funct ion t o provide easi er way for users ’ usage in changing B IOS s ett ing.

Note: The model name on this B IOS pict ure is for ref erence onl y. It may not be the exact model nam e.

Caution: By updating your motherboard, you are taking a risk of BIOS flash failure. If your motherboard is working stable, and there are no major bugs that had been fixed by a latter BIOS revision, we recommend that you DO NOT try to upgrade your BIOS.

If you intent on upgrading, PLEASE BE SURE to get the right BIOS revision for the right motherboard model to avoid any possibility failure.

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You may accomplish BIOS upgrade procedure with EZWinFlash by the following steps, and it’s STRONGLY RECOMMMANDED to close all the applicat ions before you s tart t he upgrading.

1. Download the new version of BIOS package zip file from AOpen official web site. (ex: http://www.aopen.com )

2. Unzip the download BIOS package (ex: WAX4BG2102.ZIP) with WinZip (http://www.winzip.com) in Windows environment.

3. Save the unzipped files i nto a f older, for example, W AX4BG2102.EXE & W AX4BG2102.BIN.

4. Double click on the W AX4BG2102.EXE, EZWinFlash will detect the model name and BIOS version of your motherboard. If you had got the wrong BIOS, you will not be allowed to proceed with the flas h st eps.

5. You may select preferred language in the main m enu, then c li ck [Start Flash] to s tart t he BIOS upgrade procedure.

6. EZWinFlash will complete all the process automatically, and a dialogue box will pop up to ask you to restart Windows. You may click [YES] to reboot Windows.

7. Press <Del> at POS T to enter B IOS set up, c hoose " Load Setup Def aults" , t hen “Save & Exit Set up”. Done!

It is strongly recommended NOT to turn off the power or run any application during FLASH PROCESS.

Warning: The new BIOS upgrade will permanently replace your original BIOS’s settings when flashing. You may need to reconfigure your BIOS setting so that your system can go back to work as normal.

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OOvveerrcclloocckkiinngg

As a leading manufacturer in motherboard industry, AOpen always listens to what customers want and develop products to fit different user's requirements. Reliability, compatibility, leading technology and friendly features are our basic goals when designing motherboards. Other than above mentioned design criteria, there are power users who are always seeking to push the limitation of the s yst em perform anc e by overc lock ing which we call them " Overcl ock er".

This section is dedic ated t o overcl ock ers. This high performance motherboard is designed for maximum 400MHz CPU bus clock. Our lab test results showed that 123MHz

is achievable when proper setting and qualified components were presented. Not only that, the CPU clock ratio can be up to 24x that supports almost all of Pentium configuration we feel appropriate for thi s m ot herboard is 123M Hz bus clock.

But not guaranty. ☺

Tip: Note that overclocking may also cause thermal problem. Please make sure that the cooling fan and the heatsink were adequate to dissipate excessive heat that's generated by overclocking the CPU.

☺

☺☺

4 CPUs in the future and provides flexibility for overclockers. For your reference, the

Warning: The design of this product follows CPU and chipset vendor's design guideline. Any attempts to push beyond product specification are not recommended and you are taking your own risk to damage your system or important data. Before doing overclocking, you must make sure your components are able to tolerate such abnormal setting, especially CPU, DRAMs, hard disks, and AGP VGA cards.

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VVGGAA CCaarrdd && HHaarrdd DDiisskk

VGA and HDD is key components for

overclocked in our lab. Please note that

Available Vendor List (AVL) by link to our official website.

VGA: http://www.aopen.com.tw/tech/report/overclk/mb/vga-oc.htm

HDD: http://www.aopen.com.tw/tech/report/overclk/mb/hdd-oc.htm

overclocking, for your reference, the following list are what have been successful

AOpen can not guaranty they can be successful overclocked again. Please check the

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GGlloossssaarryy

AACC9977

Basically, AC97 specification separates sound/modem circuit to two parts, digital processor and a CODEC for analogy I/O they

are linked by AC97 link bus. Since digital processor can be put

AACCPPII ((AAddvvaanncceedd CCoonnffiigguurraattiioonn && PPoowweerr IInntteerrffaaccee))

ACPI is the power management specification of PC97 (1997). It intends to save more power by taking full control of power

management to operating system and bypass BIOS

power switch to control the power state transition.

AAGGPP ((AAcccceelleerraatteedd GGrraapphhiicc PPoorrtt))

AGP is a bus interface targeted for high-performance 3D graphic. AGP supports only memory read/write operation and

single-master single-slave one-to-one only. AGP uses both rising and falling edge of the 66MHz clock, for 2X AGP, the data

nboard solution can be reduced.

o operating system (such as Windows 98). This is a bit similar as the PnP

ransfer rate is 66MHz x 4byte x 2 = 528MB/s. AGP is now moving to 4X mode, 66MHz x 4byte x 4 = 1056MB/s. AOpen is the

irst company to support 4X AGP motherboards by both AX6C (Intel 820) and MX64/AX64 (VIA 694x), started from Oct 1999.

into motherboard main chipset, the cost of sound/modem

. The chipset or super I/O chip needs to provide standard register interface

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AAMMRR ((AAuuddiioo//MMooddeemm RRiisseerr))

The CODEC circuit of AC9

to motherboard through AMR

AAOOppe

A disc bundled with AOpen motherboard product; there are motherboard drivers, Acrobat Reader for PDF online manual and

other useful utilities.

nn BBoonnuuss PPaacckk CCDD

7 sound/modem solution can be put on motherboard or put on a riser card (AMR card) that connects

connector.

AAPPMM ((AAddvvaanncceedd PPoowweerr MMaannaaggeemmeenntt))

Unlike ACPI, BIOS controls most APM power management functions. AOpen Suspend to Hard Drive is a good example of APM

power management.

AATTAA ((AATT AAttttaacchhmmeenntt))

ATA is the specification of diskette interface. In 80’s, many software and hardware manufacturers instituted the ATA specification

together. The AT is meaning International Business

AATTAA//6666

ATA/66 uses both rising edge and falling edge but doubles UDMA/33 transfer rate. The data transfer rate is 4 times of the PIO

mode 4 or DMA mode 2, 16.6MB/s x4 = 66MB/s. To use ATA/66, you need special ATA/66 IDE cable.

Machines Corporation (IBM) personal computer/AT’s bus structure.

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AATTAA//110000

ATA/100 is a new IDE specification under developing. ATA/100 uses both rising edge and falling edge as ATA/66 but clock cycle

ime is reduced to 40ns. The data transfer rate is (1/40ns) x 2 bytes x 2 = 100MB/s. To use ATA/100, you need special 80-wire

IDE cable, the same as ATA/66.

AATTAA//113333

ATA/133 is a new IDE specification under developing. ATA/133 uses both rising edge and falling edge as ATA/66

time is reduced to 30ns. The data transfer rate is (1/30ns)

IDE cable, the same as ATA/66.

BBIIOOSS ((BBaassiicc I

BIOS is a set of assembly routin or Flash ROM. BIOS controls Input/output devices and other

hardware devices of motherboar

required to access BIOS without directly access hardware devices.

but clock cycle

x 2 bytes x 2 = 133MB/s. To use ATA/133, you need special 80-wire

nnppuutt//OOuuttppuutt SSyysstteemm))

e/program that reside in EPROM

d. In general, to provide hardware independent portability, operation system and drivers is

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BBuuss MMaasstteerr IIDDEE ((DDMMAA mmooddee))

The traditiona

for the me

without interrupting CPU, and releases CPU to operate concurrently while data is transferring between memory and IDE device.

You need the bus master IDE driver and the bus master IDE HDD to support bus master IDE mode.

CCNNRR ((CCo

The CNR spe

LAN, home networking, DSL, USB, wireless, audio and modem subsystems widely used in today's "connected PCs". The CNR

specification is an open industry specification and is supported by OEMs, IHV card manufacturers, silicon supplier and

Microsoft.

l PIO (Programmable I/O) IDE requires the CPU to involve in all the activities of the IDE access including waiting

chanical events. To reduce the workload of the CPU, the bus master IDE device transfers data from/to memory

mmmmuunniiccaattiioonn aanndd NNeettwwoorrkkiinngg RRiisseerr))

cification provides the PC industry the opportunity to deliver a flexible and cost reduced method of implementing

CCOODDEECC ((CCooddiinngg aanndd DDeeccooddiinngg))

Normally, CODEC means a circuit that can do digita

sound/modem solution.

AC97

DDDDRR ((DDoouubbllee DDaattaa RRaatteedd)) SSDDRRAAMM

DDR SDRAM utilizes the existing DRAM infrastructure and technology while doubling the nominal bandwidth available to

systems in an easy to design and simple to adopt way. Initially a perfect solution for memory intensive server and workstation

applications, DDR low cost and low voltage will ultimately make it an ideal solution for all segments of the PC market, high

performance desktop and mobile PCs, Value PCs and even Internet Appliances and mobile devices.

l to analog conversion and also the analog to digital conversion. It is part of

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DDIIMMMM ((DDuuaall IInn LLiinnee MMeemmoorryy MMoodduullee))

DIMM socket has total 168-pin and supports 64-bit data. It can be single or double side, the golden finger signals on each side

of PCB are different, and that is why it was called Dual In Line. Almost all DIMMs are made by SDRAM

Note that some old DIMMs are made by FPM/EDO

DDMMAA ((DDiirreecctt MMeemmoorryy AAcccceessss))

Channel for communications between the memory and surrounding dev

EECCCC ((EErrrroorr CChheecckkiinngg aanndd CCoorrrreeccttiioonn))

The ECC

special algorithm. The ECC algorithm has the ab

parity mode can only detect single-bit error.

EEDDOO ((EExxtteennddeedd DDaat

The EDO DRAM technology is actually very similar to

output data to start the pre-charge activity, EDO DRA

similar to pipeline effect and reduces one clock state.

mode needs 8 ECC bits for 64-bit data. Each time memory is accessed; ECC bits are updated and checked by a

ility to detect double-bit error and automatically correct single-bit error while

aa OOuuttppuutt)) MMeemmoorryy

, which operate at 3.3V.

and only operate at 5V. Do not confuse them with SDRAM DIMM.

ices.

FPM (Fast Page Mode). Unlike traditional FPM that tri-states the memory

M holds the memory data valid until the next memory access cycle, that is

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EEEEPPRROOMM ((EElleeccttrroonniicc EErraassaabbllee PPrrooggrraammmmaabbllee RROOMM))

Also known as E2PROM. Both EEPROM and Flash ROM can be re-programmed by electronic signals, but the interface

technology is different. Size of EEPROM is much smaller than flash ROM.

EEPPRROOMM ((EErraassaabbllee PPrrooggrraammmmaabbllee RROOMM))

Traditional motherboard stores BIOS code in

upgraded, you need to remove EPROM from motherboard, clear by UV light,

EEVV66 BBuuss

EV6 Bus in the technology of Alpha processor from Digital Equipment Corporation. EV6 bus uses both rising and falling clock

edge to transfer data, similar as DDR SDRAM or ATA/66 IDE bus.

EV6 Bus Speed = CPU external bus clock x 2.

For example, 200 MHz EV6 bus is actually

EPROM. EPROM can only be erased by ultra-violet (UV) light. If BIOS has to be

using 100 MHz external bus clock, but the equivalent speed is 200 MHz.

FFCCCC DDooCC ((DDeeccllaarraattiioonn ooff CCoonnffoorrmmiittyy))

The DoC is component certification standard of FCC EMI regulations. This standard allows DIY component (such as

motherboard) to apply DoC label separately without a shielding of housing.

FFCC--PPGGAA ((FFlliipp CChhiipp--PPiinn GGrriidd AArrrraayy))

FC means Flip Chip, FC-PGA is a package of Intel for Pentium III CPU. It can plug into SKT370 socket.

re-program, and then insert back.

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FFllaasshh RROOMM

Flash ROM can be re-programmed by electronic signals. It is easier for BIOS to upgrade by a flash utility, but it is also easier to

e infected by virus. Because of increase of new functions, BIOS size is increased from 64KB to 256KB (2M bit). AOpen AX5T is

the first board to implement 256KB (2Mbit) Flash ROM. Now fl

(Intel 810) motherboard. , AOpen motherboard uses EEPROM

FFSSBB ((FFrroonntt SSiiddee BBuuss)) CClloocckk

FSB Clock me

CPU internal clock = CPU FSB Clock x CPU Clock Ratio

CC BBuuss

See SMBus.

ash ROM size is moving to 4M bit on AX6C (Intel 820) and MX3W

for jumper-less and battery-less design.

ans CPU external bus clock.

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IIEEEEEE 11339944

IEEE 1394 is a lo

working group.

devices together at 200 Mbps. Serial Bus Management provides overall configuration control of the serial bus in the form of

optimizing arbitration timing, guarantee of adequate electrical power for all devices on the bus, assignment of isochronous

channel ID, and notification of errors. There are two type of IEEE 1394 data transfer: asynchronous and isochronous.

Asynchronous transport is the traditional computer memory-mapped, load and store interface. Data

pecific address and an acknowledgment is returned. In addition to an architecture that scales with silicon technology, IEEE

1394 features a unique isochronous data ch

pre-determined rate. This is especially impo

for costly buffering.

aarriittyy BBiitt

The de uses 1 parity bit for each byte, normally it is even parity mode, that is, each time the memory data is updated,

parity mo

parity bit will

arity error is occurred and this is called single bit error detection.

PPBBSSRRAAMM ((PPiippeelliinneedd BBuurrsstt SSRRAAMM))

For Socket 7 CPU, one burst data read requires four QWord (Quad-word, 4x16 = 64 bits). PBSRAM only needs one address

decoding time and automatically sends the remaining QWords to CPU according to a predefined sequence. Normally, it is

3-1-1-1, total 6 clocks, which is faster than asynchronous SRAM. PBSRAM is often used on L2 (level 2) cache of Socket 7 CPU.

Slot 1 and Socket 370 CPU do not need PBSRAM.

w-cost digital interface originated by Apple Computer as a desktop LAN and developed by the IEEE 1394

The IEEE 1394 can transport data at 100, 200 or 400 Mbps. One of the solutions to connect digital television

requests are sent to a

annel interface. Isochronous data channels provide guaranteed data transport at a

rtant for time-critical multimedia data where just-in-time delivery eliminates the need

be adjusted to have even count "1" for each byte. When next time, if memory is read with odd number of "1", the

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PPCC--110000 DDIIMMMM

SDRAM DIMM that supports 100MHz CPU FSB bus clock.

PPCC--113333 DDIIMMMM

SDRAM DIMM that supports 133MHz CPU FSB bus clock.

PPCC--11660000 oorr PPCC--22110000 oorr PPCC--22770000 DDDDRR DDRRAAMM

Based on FSB frequency, the DDR DRAM has 200MHz, 266MHz and 333 MHz three types of working frequency. Because of

DDR DRAM data bus is 64-bit, it provides data transfer bandwidth up to 200x64/8=1600MB/s, and 266x64/8=2100MB/s, and

333x64/8=2700MB/s. Hence, the PC-1600 DDR DRAM is working with 100MHz, PC-2100 DDR DRAM is working with 133MHz

and PC-2700 D

PPCCII ((PPeerriipphheerraall CCoommppoonneenntt IInntteerrffaaccee)) BBuuss

Bus for the internal connection of peripheral devices, high-speed d

PPDDFF FFoorrmmaatt

A file format for electronic document, PDF format is independent from platform, you can read PDF file under Windows, Unix,

Linux, Mac … with different PDF reader. You can also read PDF file by web browser such as IE and Netscape, note that you

need to install PDF plug-in first (Included in Acrobat Reader).

DR DRAM is working with 166MHz FSB frequency.

ata channel between the computer and expansion card.

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PPnnPP ((PPlluugg aanndd PPllaayy))

The PnP specification suggests a standard register interfac

registers are used by BIOS and operating system to

operating system will automatically allocate the IRQ/DMA/Memory. Currently, almost all the PCI cards and most ISA cards are

already PnP complian

PPOOSSTT ((PPoowweerr--OOnn SSeellff TTeesstt))

The BIOS self-test procedure after power-on, sometimes, it is the first

system boot.

RRDDRRAAMM ((RRaammbbuuss DDRRAAMM))

Rambus is a memory technology that uses large burst mode data transfer. Theoretically, the data transfer should be high than

. RDRAM is cascaded in channel operation. For Intel 820, only one RDRAM channel is supported, 16-bit data per

SDRAM

channel, and this channel may have maximum 32 RDRAM devices, n

RRIIMMMM ((RRaammbbuuss IInnlliinnee MMeemmoorryy MMoodduullee))

184-pin memory mo memory technology. A RIMM memory module may contain up to maximum of 16

RDRAM devices.

dule that supports RDRAM

e for both BIOS and operating system (such as Windows 95). These

configure system resource and prevent any conflicts. PnP BIOS or

or the second screen shown on your monitor during

o matter how many RIMM

sockets.

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SSDDRRAAMM ((SSyynncchhrroonnoouuss DDRRAAMM))

SDRAM is one of the DRAM technologies that allow DRAM to use the same clock as the CPU host bus (EDO and FPM are

asynchronous and do not have clock signal). It is similar as PBSRAM

168-pin DIMM

SShhaaddooww E

A memory space in Flash-ROM to simulate

battery-less design

and operates at 3.3V. AOpen is the first company to support dual-SDRAM DIMMs onboard (AP5V), from Q1 1996

PPRROOMM

SSIIMMMM ((SSiinnggllee IInn LLiinnee MMeemmoorryy MMoodduullee))

SIMM socket is only 72-pin, and is only

was called Single In Line. SIMM is made by FPM or EDO

current motherboard design.

single side. The golden finger signals on each side of PCB are identical. That is why it

SSMMBBuuss ((SSyysstteemm MMaannaaggeemmeenntt BBuuss))

SMBus is also called I2C bus. It is a two-wire bus developed

For example, set clock of clock generator for jumper-less motherboard. The data transfer rate of SMBus is only 100Kbit/s, i

allows one host to

communicate with CPU and many masters and slaves to send/receive message.

to use burst mode transfer. SDRAM comes in 64-bit

E2PROM operation, AOpen motherboard uses Shadow E2PROM for jumper-less and

DRAM and supports 32-bit data. SIMM had been phased out on

for component communication (especially for semiconductor IC).

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SSPPDD ((SSeerriiaall PPrreesseennccee DDeetteecctt))

SPD is a small ROM or EEPROM device resided on the DIMM or RIMM. SPD stores memory module information such as DRAM

timing and chip parameters. SPD can be used by BIOS

UUllttrraa DDMMAA

Ultra DMA (or, more accur

computer’s dat path (or

burst mode at a rate of 33.3MB/s, twice as fast as the previous Direct Access Memory (DMA)

developed as a propo

hat support computer bus technology. Ultra DMA support in your computer means that it will boot (start) and open new

applications more quickly. It will help users of graphic-intens v

the hard disk drive. Ultra DMA uses Cyclical Redundancy Che

uses the same 40-pin IDE interface cable as PIO and DMA.

16.6MB/s x2 = 33MB/s

16.6MB/s x4 = 66MB/s

16.6MB/s x6 = 100MB/s

ately, Ultra DMA/33) is a protocol for transferring data between a hard disk drive through the

a bus) to the compu er’s random access memory (RAM). The Ultra DMA/3 protocol transfers data in

sed industry standard by the Quantum corporation, makes of hard disk drives, and Intel, makes of chipset

UUSSBB ((UUnniivveerrssaall SSeerriiaall BBuuss))

USB is a 4-pin serial peripheral bus that is capable of cascading low/medium speed peripherals

ewly designed USB2.0 has a fancy speed of up to 480Mbps) such as keyboard, mouse, joystick, scanner, printer and modem.

With USB, the traditional complex cables from back panel of your PC can be eliminated.

to decide best timing for this DIMM or RIMM.

t 3

interface. Ultra DMA was

i e and applications that require large amounts of access to data on

cking (CRC), offering a new level of data protection. Ultra DMA

(less than 10Mbit/s, but the

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VVCCMM ((VViirrttuuaall CChhaannnneell MMeemmoorryy))

NEC’s Virtual Channel Memory (VCM) is a new DRAM core architecture that dramatically improves t

o service multimedia requirements. VCM increases memory bus efficiency and performance of any DRAM technology by

providing a set o

access latency a

ZZIIPP ffiillee

A compressed file format to reduce file size. To unzip file, run shareware PKUNZIP (http://www.pkware.com/) for DOS and other

operating system or WINZIP (http://www.winzip.com/

f fast static registers between the memory core and I/O pins. Using VCM technology results in reduced data

nd reduced power consumption.

he memory system’s ability

) for windows environment.

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TTrroouubblleesshhoooottiinngg

If you encounter any trouble to boot you system, follow the procedures accordingly to resolve the problem.

Start

Turn off the power and unplug the AC power cable,

add-on cards and cables, including VGA, IDE, FDD, COM1, COM2 and

printer.

Make sure if all jumper settings are correct.

Clear CMOS

then remove all of the

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Yes

Install the VGA card. Then connect your monitor and keyboard.

supply and CPU fan work

Continue

Turn on the power

and check if the power

properly.

The problem is probably caused by

power supply or motherboard failure

Please contact your reseller or local

distributor for repairing.

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Press <Ctr

them and

l> and <Alt> ke

then press <De

Continue

Check if there is display?

Yes

y at the same time, hold

l> to reboot the system.

Check if the system

reboots?

Yes

Perhaps your VGA card

or monitor is defe

It is very possible that your

keyboard is defective.

ctive.

100

Aopen AX4BG2 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

AX4B-G2 / AX4B-G2N

Chipset

Expansion Slots

Memory

Ultra DMA 33/66/100 Bus Master IDE

On-board AC’97 Sound

Watch Dog Timer

Four USB Connectors

AGP Protection Technology

Enhanced ACPI

Super Multi-I/O

Motherboard Map

IrDA Connector

System Requirement

Fresh installation of Windows 98 on a new system

Changing from APM to ACPI (Windows 98 only)

Changing from ACPI to APM

System Requirement

Procedures