AOpen AK75 User Manual

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AK75

DOC. NO.: AK75-OL-E0202A

Overview

Installation

Hardware

Drivers &

Utilities

BIOS Setup

AWARD

Glossary

Troubleshooting &

Technical Support

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AK75 .......................................................................................................................................................................................1

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

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

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

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

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

Quick Installation Procedur e....................................................................................................................................................14

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

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

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

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

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

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

JP21 FSB/PCI Clock Ratio......................................................................................................................................................22

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

CPU and System Fan Connector (with H/W Monitoring)..........................................................................................................26

DIMM Sockets.........................................................................................................................................................................27

Front Panel Connector............................................................................................................................................................29

AAKK7755 OOnnlliinnee MMaannuuaall

ATX Power Connector.............................................................................................................................................................30

AC Power Auto Recovery........................................................................................................................................................30

IDE and Floppy Connector......................................................................................................................................................31

S/PDIF (Sony/Philips Digital Interface) Connector...................................................................................................................33

IrDA Connector........................................................................................................................................................................34

AGP (Accelerated Graphi c Port) Expansion Slot.....................................................................................................................35

WOM (Zero Voltage Wake on Modem) Connector...................................................................................................................36

WOM by External BOX Modem...............................................................................................................................................37

WOM by Internal Modem Card................................................................................................................................................38

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

CNR (Communication and Network Riser) Expansion Slot......................................................................................................41

PC99 Color Coded Back Panel ...............................................................................................................................................42

Support Six USB Connectors..................................................................................................................................................43

Chassis Intrusion Connector....................................................................................................................................................44

CD Audio Connector................................................................................................................................................................45

Modem Audio Connector.........................................................................................................................................................46

AUX-IN Connector...................................................................................................................................................................47

Front Audio Connector ............................................................................................................................................................48

Battery-less and Long Life Design........................................................................................................................................... 49

AAKK7755 OOnnlliinnee MMaannuuaall

Over-current Protection...........................................................................................................................................................50

Hardware Monitoring...............................................................................................................................................................51

Resettable Fuse......................................................................................................................................................................52

2200µF Low ESR Capacitor....................................................................................................................................................53

Layout (Frequency Isolation Wall)...........................................................................................................................................54

Pure Aluminum Heatsink.........................................................................................................................................................55

Driver and Utility.................................................................................................................................................................. 56

Auto-run Menu from Bonus CD Disc........................................................................................................................................ 57

Installing Onboard Sound Driver..............................................................................................................................................58

Installing Si S AGP Dr ive r.........................................................................................................................................................59

Installing Hardware Monitoring Utility....................................................................................................................................... 60

ACPI Suspend to Hard Drive...................................................................................................................................................61

ACPI Suspend to RAM (STR)..................................................................................................................................................65

AWARD BIOS ....................................................................................................................................................................... 67

About BIOS Function Description….........................................................................................................................................68

How To Use Award™ BIOS Setup Program ............................................................................................................................69

How To Enter BIOS Setup.......................................................................................................................................................71

BIOS Upgrade under Windows environment...........................................................................................................................72

Overclocking........................................................................................................................................................................ 74

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VGA Card & Hard Disk............................................................................................................................................................75

Glossary ...............................................................................................................................................................................76

AC97.......................................................................................................................................................................................76

ACPI (Advanced Configuration & Power Interface)..................................................................................................................76

AGP (Accelerated Graphic Port)..............................................................................................................................................76

AMR (Audio/Modem Riser)......................................................................................................................................................77

AOpen Bonus Pack CD...........................................................................................................................................................77

APM (Advanced Power Management)..................................................................................................................................... 77

ATA (AT Attachment) ...............................................................................................................................................................77

ATA/66 ....................................................................................................................................................................................77

ATA/100 ..................................................................................................................................................................................78

BIOS (Basic Input/Output System) ..........................................................................................................................................78

Bus Master IDE (DMA mode)..................................................................................................................................................78

CNR (Communication and Networking Riser)..........................................................................................................................78

CODEC (Coding and Decoding)..............................................................................................................................................79

DDR (Double Data Rated) SDRAM......................................................................................................................................... 79

DIMM (Dual In Line Memory Module)......................................................................................................................................79

DMA (Direct Memory Access)..................................................................................................................................................79

ECC (Error Checking and Correction) .....................................................................................................................................80

AAKK7755 OOnnlliinnee MMaannuuaall

EDO (Extended Data Output) Memory....................................................................................................................................80

EEPROM (Electr o n ic Erasable Programmable ROM)..............................................................................................................80

EPROM (Erasable Programmable ROM)................................................................................................................................80

EV6 Bus..................................................................................................................................................................................81

FCC DoC (Declaration of Conformity).....................................................................................................................................81

FC-PGA (Flip Chip-Pin Grid Array)..........................................................................................................................................81

Flash ROM.............................................................................................................................................................................. 81

FSB (Front Side Bus) Clock .................................................................................................................................................... 82

C Bus....................................................................................................................................................................................82

IEEE 1394...............................................................................................................................................................................82

Parity Bit..................................................................................................................................................................................82

PBSRAM (Pipelined Burst SRAM)...........................................................................................................................................83

PC-100 DIMM.........................................................................................................................................................................83

PC-133 DIMM.........................................................................................................................................................................83

PC-1600 or PC-2100 DDR DRAM........................................................................................................................................... 83

PCI (Peripheral Component Interface) Bus..............................................................................................................................83

PDF Format.............................................................................................................................................................................84

PnP (Plug and Play) ................................................................................................................................................................84

POST (Power-On Self Test).....................................................................................................................................................84

AAKK7755 OOnnlliinnee MMaannuuaall

RDRAM (Rambus DRAM).......................................................................................................................................................84

RIMM (Rambus Inline Memory Module) ..................................................................................................................................85

SDRAM (Synchronous DRAM)................................................................................................................................................85

Shadow E

SIMM (Single In Line Memory Module)....................................................................................................................................85

SMBus (System Management Bus).........................................................................................................................................86

SPD (Serial Presence Detect).................................................................................................................................................86

Ultra DMA...............................................................................................................................................................................86

USB (Universal Serial Bus) ..................................................................................................................................................... 87

VCM (Virtual Channel Memory)...............................................................................................................................................87

ZIP file.....................................................................................................................................................................................87

Troubleshooting..................................................................................................................................................................88

Technical Support................................................................................................................................................................ 92

Product Registration........................................................................................................................................................... 95

How to Contact Us............................................................................................................................................................... 96

PROM....................................................................................................................................................................85

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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 are trademarks of Intel Corporat i on. Microsoft, Windows, and Windows logo are either registered trademark s or t rademarks of Microsoft Corporation in t he 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 r evis e this publication and to make reasonable changes. AOpen ass umes 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 cop yright 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

1996-2000, AOpen Inc. All Ri ghts Reserved.

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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 lat er chapters. Please keep this manual carefully for future upgrades or system configuration changes. This Online Manual is saved in PDF format recommend using Adobe Acrobat Reader 4.0 for online viewing, it is included in Bonus CD disc

web site.

Although this Online Manual is optimized for screen viewing, it is still capable for hardcopy printi ng, you can print it by A 4 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

or you can get free download from Adobe

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OOvveerrvviieeww

Thank you for choosing AOpen AK75 motherboard. The AK75 is AMD® Socket 462 motherboard (M/B) based on the ATX form factor featuring the SIS 745 chi pset Athlon™ XP & Athlon™ & Duron™ processor with 200/266MHz EV6 supports AGP 1X/2X/4X mode and pipelined spilt-transaction long burst transfer up t o 1056MB/s ec. With hi gh bandwidth 200/266MB/ s 8-bit Multi-threaded I/O Link Host Controller, DDR266(PC2100) maximum memory size can be up to 3GB. The onboard IDE controller supports Ultra DMA 100MB/s. Further flexibility can be achieved by taking advantage of the Communication and Network Riser (CNR) audio, modem, and/or LAN configuration on a single baseboard design. Besides, the AK75 has an AC97 and magic surround stereo sound to let people enjoy working with it. Now, let’s enjoy all features from AOpen AK75 motherboard.

. As high performance chipset built in the M/B, the AK 75 motherboard can support AMD® Socket 462 series

system bus. In the AGP performance, it has one AGP slot and

and DDR333(PC2700) DDR SDRAM can be applied to the AK75 and the

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

card opt ion th at allows

CODEC chipset onboard providing high performance

AAKK7755 OOnnlliinnee MMaannuuaall

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CPU

Supports AMD® Socket 462 series CPU with both 200MHz and 266MHz EV6 Bus designed for Socket 462 technology. Athlon: 600MHz~1.4GHz Duron: 600MHz~1.2GHz AthlonXP: 1500+(1.3GHz)~2000+(1.667GHz)

Chipset

The motherboard is equipped with SIS 745 chipset. SIS 745 chipset consists of host interface Controller and integrated high performance

DDR SDRAM

Masters Including IDE, USB, Audio, and Modem Controllers, which can strongly enhance the system performance.

Host system controller, which provide Dedicated High-Speed Data Paths connecting North-Bridge and Each South-B ridge

Expansion Slots

Including six 32-bit/33MHz PCI, one CNR and one AGP 1x2x4X slots. The PCI local bus throughput can be up to 132MB/s. The

Communication & Nectworking Riser (CNR) Graphics Port (AGP) specification provides a new level of video display sophistication and speed. The AGP video cards support data

transfer rate up to 1056MB/s. AK75 motherboard includes one AGP expansion slot for a bus mastering AGP graphic card. For AD and SBA signaling, AK75 motherboard can support 1X/2X/4X mode. Of six PCI slots provided, AK75 supports all six master PCI slots with arbitration and decoding for all integrated functions and LPC bus.

slot provided from AK75 can support CNR interface for a Modem/Audio card. The Accelerated

AAKK7755 OOnnlliinnee MMaannuuaall

Memory

With SIS 745 chipset, the AK 75 can support Doubl e-Data-Rate (DDR) SDRAM. The DDR SDRAM interface allows zero wait state bursting between the SDRAM and the data buffers at 33/66/100MHz. The six banks of DDR SDRAM can be composed of an arbitrary mixture of 16M/64M/128M/256M/512Mx1GB DDR SDRAM and maximum up to 3 GB.

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, supports 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

AK75 uses the onboard AC'97 CODEC sound chip. This on-board audio includes a complete audio recording and playback system.

Six USB Connectors

Provides three ports, six USB c onnectors for USB interface devices, such as mouse, keyboard, modem, scanner, etc.

1MHz Stepping Frequency Adjustment

Provides “1MHz Stepping Frequency Adjustment” function in the BIOS. This magic function al lows you adjust CPU FSB frequency from 100~200 by 1MHz stepping, and lets your system can get maximum performance.

AAKK7755 OOnnlliinnee MMaannuuaall

Watch Dog Timer

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

Power Management/Plug and Play

Supports the power management function that confirms to the power-saving standards of the U.S. Environm ental Protection Agency (EPA) Energy Star program. It also offers Plug-and-Play user-friendlier.

, which helps save users from configuration problems, thus making the system much

Hardware Monitoring Management

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

Enhanced ACPI

Fully implement the ACPI standard for Windows® 98/ME/2000 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 directed from COM1 to the Infrared Module for the wireless connections.

AAKK7755 OOnnlliinnee MMaannuuaall

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

1. Installing CPU and Fan

2. Installing System Memory (DIMM)

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

AAKK7755 OOnnlliinnee MMaannuuaall

Front Audio Connecto

S/PDIF Connecto

32-bit PCI Expansion Slot x6

CD-IN

AC’97 CODEC

MODEM-CN

AUX-IN

CNR Expansion Slot

WOL (Wake on LAN)

WOM (Wake on Modem)

& 3rdUSB Connecto

JP14 CMOS Clear Jumpe

Case Open Connecto

Connecto

IrDA Connecto

2Mbit Programmable

Front Panel Connecto

ATA/33/66/100

IDE Connector x2

FAN3 Connecto

Motherboard Map

PC99 Colored Back Panel

Resettable Fuse

JP28 Wakeup on Keyboard/Mouse

TX Power Connector

FAN2 Connector

2200μF Low ESR Capacitors

GP 4x Expansion Slot

462-pin CPU Socket with Voltage and Frequency Auto-Detection that supports

MD AthlonTM / DuronTM / and AthlonTMXP

SW1 CPU Ratio Select Switch

SIS 745 Chipset

CPU FAN connector

184-pin DIMM supports DDR SDRAM DDR333 (DIMMx2 Max. to 2GB)

DDR266 (DIMMx3 Max. to 3GB)

JP21 FSB Select Jumper

FDD Connector

AAKK7755 OOnnlliinnee MMaannuuaall

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AthlonXP/Athlon/Duron

Socket 462

AMD

CPU

AGP 1X/2X/4X Slot

Floppy Disk Drive x2

200/266MHz

System Bus

USB

Connector x6

DDR333 (DIMMx2,

Max. to 2GB)

DDR266 (DIMMx3,

Max. to 3GB)

DIMM Socket x3

SIS 745

1stUSB Port

2ndUSB Port

3rdUSB Port

PCI Bus

33/66100

2Mbit

Flash EEPROM

Winbond W83697

32-bit PCI Slot x6

ATA

Primary Channel

Secondary

Channel

RealTek

ALC202A

AC97

CODEC

AC Link

Parallel Port

Serial Port x2

IDE Drive x4

CNR Slot

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This chapter 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 component.

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 throughout any procedure requiring ESD protection.

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When you read this online manual and start to assemble your com puter system, you may f ind some of functi ons are called “Optional”, and some are called “Upgrade Optional”. Though all AOpen motherboards include m any amazing and powerful features, in some situations, these powerful features are not used to every user. Hence, we changed some key features as “Optional” for you to choose. Some optional functions that can be upgraded by users, we call them “Upgrade Optional”. As for those optional functions that can’t be upgraded by ourselves, we call them “Optional”. If needed, you can contact our local distributors or resellers for purchasing “Upgrade Optional” components, and again you can visit AOpen official web site: www.aopen.com

for more detail information.

AAKK7755 OOnnlliinnee MMaannuuaall

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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 pin 1 & pin 2.

5. Connect ATX power cable back to connector PWR2.

Pin 1

Normal Operation

(default)

Clear CMOS

Tip: When should I Clear CMOS?

1. Boot fail because of overclocking…

2. Forget password…

3. Troubleshooting…

AAKK7755 OOnnlliinnee MMaannuuaall

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This motherboard supports AMD® Athlon and Duron Socket 462 series CPU. Be careful of CPU orientation when you plug it into CPU socket.

1. Pull up the CPU socket lever and up to 90-degree angle.

2. Locate Pin 1 in the socket and look for a black dot or cut edge on the CPU upper interface. Match Pin 1 and cut edge, then insert the CPU into the socket.

CPU socket

Lever

Note: These pictures are for example only, it may not exactly be the same motherboard.

CPU pin 1 and

cut edge

Black dot and

cut edge

AAKK7755 OOnnlliinnee MMaannuuaall

3. Press down the CPU socket lever and finish CPU installation.

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

CPU cut edge

Note: If you do not match the CPU socket Pin 1 and CPU cut edge well, it may damage the CPU.

AAKK7755 OOnnlliinnee MMaannuuaall

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This jumper is used to specify FSB clock. Generally speaking, if you are not overclock ers, we recommend you to set it to the default setting. Additionally, this motherboard also provides “1MHz Stepping Adjustment” feature for overclockers to adjust CPU FSB frequency via BIOS setup program. Based on the CPU type, the adjustment range has two levels: 100~123 (FSB=100, such as Athlon 800), 124~200 (FSB=133, such as Athlon 1000) MHz for your choosing. You may also choose a specific FSB frequency ranging from 100~124 (say, 105, 110, 115 for example) and 133~166 with reference to a f requency table in BI OS setup program. If you fix the CPU FS B frequency b y JP21, the “1MHz Stepping Adjustment” range will be changed and following your JP21 setting.

SW1 CPU Ratio

Select Switch

FSB=100MHz

(Default)

1 2 3 4

FSB=133MHz

CPU Ratio SW1-1 SW1-2 SW1-3 SW1-4

5.5 6

6.5 7

7.5 8

8.5 9

9.5

10.5 11

11.5 12

12.5

CPU Default 0 0 0 0

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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

There will be no worry of wrong CPU voltage detection.

, therefore no jumpers or switches are used. The disadvantages of t he Pentium based jumper-less designs are eliminated.

Socket A CPU

CPU VID signal

Power Regulator

(Automatically generates CPU voltage)

AMD

CPU voltage

Clock

Generator

CPU Freq. Ratio

BIOS

Controlled

Circuit

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This motherboard supports CPU VID function. The CPU core voltage will be aut om atically detected.

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BIOS Setup > Frequency/Voltage Control > CPU Clock Setting

This motherboard is CPU jumper-less design, you can set CPU frequency through the BIOS setup, and no jumpers or switches are needed.

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

AGP Clock = PCI Clock x 2

CPU Ratio

CPU FSB (By BIOS table)

CPU FSB (By manual Adjustment)

From 5.0x to 12.5x step 0.5x

100, 103, 107, 110, 112, 124, 133, 137, 143, 147, and 166MHz.

FSB=100, 100~123 by 1MHz stepping adjustment technology FSB=133, 124~200 by 1MHz stepping adjustment technology

AAKK7755 OOnnlliinnee MMaannuuaall

CPU CPU Core Frequency EV6 Bus Clock Ratio Athlon 1G 1GHz 200MHz 10.0x Athlon 1.1G 1.1GHz 200MHz 11.0x Athlon 1.2G 1.2GHz 200MHz 12.0x Athlon 1.3G 1.3GHz 200MHz 13.0x Athlon 1G 1GHz 266MHz 7.5x Athlon 1.13G 1.13GHz 266MHz 8.5x Athlon 1.2G 1.2GHz 266MHz 9.0x Athlon 1.33G 1.33GHz 266MHz 10.0x Athlon 1.4G 1.4GHz 266MHz 10.5x AthlonXP 1500+ 1.3GHz 266MHz 10.0x AthlonXP 1600+ 1.4GHz 266MHz 10.5x AthlonXP 1700+ 1.46GHz 266MHz 11.0x AthlonXP 1800+ 1.53GHz 266MHz 11.5x AthlonXP 1900+ 1.6GHz 266MHz 12.0x AthlonXP 2000+ 2GHz 266MHz 12.5x Duron 800 800MHz 200MHz 8.0x Duron 850 850MHz 200MHz 8.5x Duron 900 900MHz 200MHz 9.0x Duron 950 950MHz 200MHz 9.5x Duron 1G 1GHz 200MHz 10.0x Duron 1.1G 1.1GHz 200MHz 11.0x

Warning: SIS 745 Chipset supports maximum 266MHz (EV6) system bus and 66MHz AGP clock; higher clock setting may cause serious system damage.

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Plug in the CPU fan cable to the 3-pin CPU FAN connector. If you have chassis fan, you can also plug it on System FAN (FAN2) or AUX FAN (FAN3) connector.

GND +12V SENSOR

FAN3 Connector

CPU Fan Connector

Note: Some CPU fans do not have sensor pin, so that cannot support hardware monitoring function.

FAN2 Connector

GND +12V SENSOR

AAKK7755 OOnnlliinnee MMaannuuaall

DDIIMMMM SSoocckkeettss

This motherboard has three 184-pin DDR DIMM sockets that allow you to install PC2100 (DIMMx3, Max. to 3GB) or PC2700 (DI MMx2, Max. to 2GB). 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.

DIMM1 DIMM2 DIMM3

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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 hands and press down firmly until the DIMM module is securely in place.

3. Repeat step 2 to finish additional DIMM modules installation.

Tab

40 pins 52 pins

Note: The tabs of the DIMM slot will close-up to hold the DIMM in place when the DIMM touches the slot’s bottom.

AAKK7755 OOnnlliinnee MMaannuuaall

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Pin 1

Attach the power LED, Keylock, 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 mode.

Locate the power switch cable from your ATX housing. It is 2-pin female connecto from the housing front panel. Plug this connector to the soft-power switch connecto marked SPWR.

Suspend Type ACP I LED

Power on Suspend (S2) or Suspend to RAM (S3) Fl ashing for every second

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

IDE LED

Speaker

SPWR

CPI & PWR

LED

Reset

SPEAKER

NC NC

+5V IDE LED IDE LED

+5V

GND

SPWR GND ACPI LE D GND ACPILED NC NC GND RESET GND

AAKK7755 OOnnlliinnee MMaannuuaall

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This motherboard comes with a 20-pin ATX power connector as shown below. Make sure you plug in the right direction.

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COM COM

+12V

5VSB

PO-O

COM

-5V +5V +5V

+5V

COM PS-ON COM

-12V +3.3V

+3.3V +3.3V COM +5V COM

A traditional ATX system should remain at power off stage when AC power resumes from power failure. This design is inconvenient for a network server or workstation, without an UPS, that needs to keep power-on. This motherboard im plements an AC Power Auto Recovery function to solve this problem.

AAKK7755 OOnnlliinnee MMaannuuaall

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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 (2nd)

Pin 1

Secondary Slave (4th)

Primary

Primary Master

(1st)

IDE 1 (Primary)

IDE 2 (Secondary)

Secondary

Master (3r d )

ATA 33/66/100 IDE Connector

FDD Connector

AAKK7755 OOnnlliinnee MMaannuuaall

IDE1 is also known as the primary channel and IDE 2 as the secondary channel. E ach channel supports two IDE devic es that make a total of four devices. In order to work together, the two devices on each channel must be set differently to Master and Slave mode. E ither one can be the hard disk or the CDROM. The setting as master or slave mode depends on the jumper on your IDE device, so please refer to your hard disk and CDROM manual accordingly.

This motherboard supports ATA33 IDE bus is 16-bit, which means every transfer is two bytes.

Mode Clock Period Clock

PIO mode 0 30ns 20 600ns (1/600ns) x 2byte = 3.3MB/s PIO mode 1 30ns 13 383ns (1/383ns) x 2byte = 5.2MB/s PIO mode 2 30ns 8 240ns (1/240ns) x 2byte = 8.3MB/s PIO mode 3 30ns 6 180ns (1/180ns) x 2byte = 11.1MB/s PIO mode 4 30ns 4 120ns (1/120ns) x 2byte = 16.6MB/s DMA mode 0 30ns 16 480ns (1/480ns) x 2byte = 4.16MB/s DMA mode 1 30ns 5 150ns (1/150ns) x 2byte = 13.3MB/s DMA mode 2 30ns 4 120ns (1/120ns) x 2byte = 16.6MB/s UDMA 33 30ns 4 120ns (1/120ns) x 2byte x2 = 33MB/s UDMA 66 30ns 2 60ns (1/60ns) x 2byte x2 = 66MB/s UDMA100 20ns 2 40ns (1/40ns) x 2byte x2 = 100MB/s

Warning: The specification of the IDE cable is a maximum of 46cm (18 inches); make sure your cable does not exceed this length.

, ATA66 or ATA100 IDE devices. Following table lists the t ransfer rate of IDE PIO and DMA modes. The

Count

Cycle Time Data Transfer Rate

Tip:

1. For better signal quality, it is recommended to set the far end side device to master mode and follow the suggested sequence to install your new device. Please refer to above diagram

2. To achieve the best performance of Ultra DMA 66/100 hard disks, a special 80-wires IDE

cable for Ultra DMA

AAKK7755 OOnnlliinnee MMaannuuaall

SS//PPDDIIFF ((SSoonnyy//PPhhiilliippss DDiiggiittaall IInntteerrffaaccee)) CCoonnnneeccttoorr

S/PDIF (Sony/Philips Digital Interface) is a newest audio transfer file format, which provides impressive quality through optical fiber and allows you to enjoy digital audio instead of analog audio. Normally there are two S/PDIF outputs as shown, one for RCA connector, t he most common one used for consumer audio products, and the other for optical connector with better audio quality. Through a specific audio cable, you can connect the S/PDIF connector to other end of the S/PDIF audio module, which bears S/PDIF digital output. However, you must have a S/PDIF supported speaker with S/PDIF digital input to connect to the S/PDIF digital output to make the most out of this function.

Connecting to

Optical Cable

S/PDIF Module

(Optional)

Pin 1

udio cable

S/PDIF Connecto

+5VSB

NC S/PDIFOUT GND

AAKK7755 OOnnlliinnee MMaannuuaall

IIrrDDAA CCoonnnneeccttoorr

The IrDA connector can be configured to support wireless infrared module, with this module and application s oftware 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.

Pin 1

+5V

IR_TX

IIrrDDAA CCoonnnneeccttoorr

KEY GND IR_RX

AAKK7755 OOnnlliinnee MMaannuuaall

AAGGPP ((AAcccceelleerraatteedd GGrraapphhiicc PPoorrtt)) EExxppaannssiioonn SSlloott

The AK75 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.

AAKK7755 OOnnlliinnee MMaannuuaall

WWOOMM ((ZZeerroo VVoollttaaggee WWaakkee oonn MMooddeemm)) CCoonnnneeccttoorr

TThhiiss mmootthheerrbbooaarrdd iimmpplleemmeennttss ssppeecciiaall cciirrccuuiitt ttoo ssuuppppoorrtt WWaakkee OOnn MMooddeemm,, bbootthh IInntteerrnnaall mmooddeemm ccaarrdd aanndd eexxtteerrnnaall bbooxx mmooddeemm aarree ssuuppppoorrtteedd.. SSiinnccee IInntteerrnnaall mmooddeemm ccaarrdd ccoonnssuummeess nnoo ppoowweerr wwhheenn ssyysstteemm ppoowweerr iiss ooffff,, iitt iiss rreeccoommmmeennddeedd ttoo uussee aann iinntteerrnnaall mmooddeemm.. TToo uussee iinntteerrnnaall mmooddeemm,, ccoonnnneecctt 44--ppiinn ccaabbllee ffrroomm RRIINNGG ccoonnnneeccttoorr ooff mmooddeemm ccaarrdd ttoo tthhee WWOOMM ccoonnnneeccttoorr oonn tthhee mmootthheerrbbooaarrdd..

Pin 1

WOM Connector

+5VSB NC RIGND

WWOOMM CCoonnnneeccttoorr

AAKK7755 OOnnlliinnee MMaannuuaall

WWOOMM bbyy EExxtteerrnnaall BBOOXX MMooddeem

TTrraaddiittiioonnaall GGrreeeenn PPCC ssuussppeenndd mmooddee ddooeess nnoott rreeaallllyy ttuurrnn ooffff tthhee ssyysstteemm ppoowweerr ssuuppppllyy,, iitt uusseess eexxtteerrnnaall bbooxx mmooddeemm ttoo ttrriiggggeerr MMBB CCOOMM ppoorrtt aanndd rreessuummee bbaacckk ttoo aaccttiivvee..

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

Serial Port (Modem

Side)

Pin 1

Serial Port

(Motherboard Side)

AAKK7755 OOnnlliinnee MMaannuuaall

WWOOMM bbyy IInntteerrnnaall MMooddeemm CCaarrd

WWiitthh tthhee hheellpp ooff tthhee AATTXX ssoofftt ppoowweerr OOnn//OOffff,, iitt iiss ppoossssiibbllee ttoo hhaavvee aa ssyysstteemm ttoottaallllyy ppoowweerr ooffff,, aanndd wwaakkeeuupp ttoo aauuttoommaattiiccaallllyy aannsswweerr aa pphhoonnee ccaallll aass aann aannsswweerriinngg mmaacchhiinnee oorr ttoo sseenndd//rreecceeiivvee aa ffaaxx.. YYoouu mmaayy iiddeennttiiffyy wwhheetthheerr oorr nnoott yyoouurr ssyysstteemm iiss iinn ttrruuee ppoowweerr ooffff mmooddee bbyy cchheecckkiinngg ttoo sseeee iiff tthhee ffaann ooff yyoouurr ppoowweerr ssuuppppllyy iiss ooffff.. BBootthh aann eexxtteerrnnaall bbooxx mmooddeemm aanndd aann iinntteerrnnaall mmooddeemm ccaarrdd ccaann bbee uusseedd ttoo ssuuppppoorrtt MMooddeemm WWaakkee UUpp,, bbuutt iiff yyoouu uussee aann eexxtteerrnnaall mmooddeemm,, yyoouu hhaavvee ttoo lleeaavvee yyoouurr bbooxx mmooddeemm oonn..

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

AAKK7755 OOnnlliinnee MMaannuuaall

WWOOLL ((WWaakkee oonn LLAANN))

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 syst em 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 s oftware, 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.

LID

GND

+5VSB

WOL connector

AAKK7755 OOnnlliinnee MMaannuuaall

WOL Connector

(Motherboard Side)

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

WOL Connector

(Ethernet Card Side)

AAKK7755 OOnnlliinnee MMaannuuaall

CCNNRR ((CCoommmmuunniiccaattiioonn aanndd NNeettwwoorrkk RRiisseerr)) EExxppaannssiioonn SSlloott

CNR is a ris er card sp ecificat ion to rep lace the AMR (Audi o/Modem Riser) that supports V.90 analog modem, multi-channel audio, and

phone-line based networking. Owing to CPU computing power getting stronger, the digital processing job can be implemented in main chipset and share CPU power. The analogy conversion (CODEC CNR card. This motherboard implements sound CODEC on board, but reserve CNR slot for the option of modem function. Note that you can still use PCI modem card.

) circuit requires a different and separate circuit design, which is put on

AAKK7755 OOnnlliinnee MMaannuuaall

PPCC9999 CCoolloorr CCooddeedd BBaacckk PPaanneell

The onboard I/O devices are PS/2 Keyboard, PS/2 Mouse, COM1 and COM2, Printer, Six USB, AC97 s ound and game ports. The view angle of drawing shown here is from the back panel of the housing.

PS/2 Mouse

Connector

SPP/EPP/ECP

Parallel Port

MIDI/Game Port

PS/2 Keyboard

PS/2 Keyboard: For standard keyboard, which is using a PS/2 plug. PS/2 Mouse: For PC-Mouse, which is using a PS/2 plug. USB Port: Available for connecting USB devices. Parallel Port: To connect with SPP/ECP/EPP printer. COM1/COM2 Port: To connect with poi nting devi ces, modem or others serial devices. RJ-45 LAN connector To connect Ethernet for home or office use. VGA Connector: To connect with PC monitor. Speaker Out: To External Speaker, Earphone or Amplifier . Line-In: Comes from the signal sources, such as CD/Tape player. MIC-In: From Microphone. MIDI/Game Port: For 15-pin PC joystick, game pad or MIDI devices.

Connector

USB

Connectors

COM 1 Port

COM 2 Port

MIC-In Line-In Speaker Out

AAKK7755 OOnnlliinnee MMaannuuaall

SSuuppppoorrtt SSiixx UUSSBB CCoonnnneeccttoorrss

This motherboard provides six USB connectors to c onnect 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 other USB connectors to the back panel or front panel of chassis.

Pin 1

USBPWR0

USB_FP_P0-

USB_FP_P0+

GND

KEY

UUSSBB33 CCoonnnneeccttoorr

UUSSBB22 CCoonnnneeccttoorr

1 2

USBPWR0 USB_FP_P1-

USB_FP_P1+ GND USB_FP_OC0

AAKK7755 OOnnlliinnee MMaannuuaall

CChhaassssiiss IInnttrruussiioonn CCoonnnneeccttoorr

The “CASE OPEN” header provides chassis intrusion-monitoring function. To m ake 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 l ights 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 chass is, you may purchase an extra sensor, attach it on your chassis, and make a good use of this function.

SENSOR GND

Chassis Intrusion

Connector

AAKK7755 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

R GND GND L

AAKK7755 OOnnlliinnee MMaannuuaall

MMooddeemm AAuuddiioo CCoonnnneeccttoorr

This connector is used to connect Mono In/MIC Out cable from internal modem card to onboard sound circuit. The pin 1-2 is Mono In, and the pin 3-4 is MIC Out. Please note that there is no standard for this kind of connector yet, only some internal modem cards implement this connector.

MMOODDEEMM--CCNN CCoonnnneeccttoorr

MONO IN GND GND MIC OUT

AAKK7755 OOnnlliinnee MMaannuuaall

AAUUXX--IINN CCoonnnneeccttoorr

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

UUXX--IINN CCoonnnneeccttoorr

L GND GND R

AAKK7755 OOnnlliinnee MMaannuuaall

FFrroonntt AAuuddiioo CCoonnnneeccttoorr

If the housing has been designed with an audio port on the front panel, you’ll be able to connect onboard audio to front panel through this connector. By the way, please rem ove 5-6 and 9-10 jumper caps from the Front Audio Connector before connecting the cabl e. 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

1 2

AUD_MIC AUD_MIC_BIAS AUD_FPOUT_

AUD_FROUT_L

9 10

UD_GND UD_VCC UD_RET_R

KEY

UD_RET_L

Note: Please remove the jumper cap from the Front Panel Audio Connector before you connect the cable. Do not remove this yellow jumper cap if housing without an audio

ort on the front panel.

AAKK7755 OOnnlliinnee MMaannuuaall

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 rec over as usual.

ATX Stand-by Power

Battery

RTC

00:00:00

CMOS

Auto Switch

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

Flash ROM

(Real Time Clock)

Backup by EEPROM

AAKK7755 OOnnlliinnee MMaannuuaall

OOvveerr--ccuurrrreenntt PPrrootteeccttiioonn

The Over Current Protection was very popular implem ented on ATX 3.3V/5V /12V switching power supply. Howe ver, the new generation CPU uses different voltage that has regulator to transfer 5V to CPU voltage (for example, 2.0V), and makes 5V over current protection useless. This motherboard is with switching regulator onboard supports CPU over-current protection; in conjunction with 3.3V/5V/12V power supply provide the full line over-current protection.

Note: Although we have implemented protection circuit try to prevent any human operating mistake, there is still certain risk that CPU, memory, IDE, add-on cards installed on this motherboard may be damaged because of component failure, human operating error or unknown nature reason.

cannot guaranty the protection circuit will always work perfectly.

ATX

Switching

Power

Supply

12V (Protected by power supply)

3.3V (Protected by power supply)

5V (Protected by power supply)

Onboard

Power

Regulator

Over-Current

Protection

Circuit

CPU Core Voltag e

Open

AAKK7755 OOnnlliinnee MMaannuuaall

Fan

CPU

Fan Speed

AOpen H/W

Monitoring

Utility

CPU Temperature

CPU Voltage

System Voltage

Detection

Circuit

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

AAKK7755 OOnnlliinnee MMaannuuaall

RReesseettttaabbllee FFuussee

Traditional motherboard has fuse for Keyboard and USB port to prevent over-current or shortage. These fuses are soldered onboard that when it is broken (function as protecting the motherboard), user still cannot replace it and the motherboard is still malfunctioning.

With expensive Resettable Fuse, the motherboard can be resumed back to normal function after the fuse had done its protection job.

Resettable

Fuse

AAKK7755 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, AK75 implements 2200μF capacitors, which is much larger than normal capacitor (1000 & 1500μf) and it provides better stability for CPU power.

μμμμ

FF LLooww EESSRR CCaappaacciittoorr

AAKK7755 OOnnlliinnee MMaannuuaall

LLaayyoouutt ((FFrreeqquueennccyy IIssoollaattiioonn WWaallll))

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

For high frequency operation, especially overclocking, layout is the most im portant factor to make sure chipse 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 caref ully. For example, the cloc 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)

AAKK7755 OOnnlliinnee MMaannuuaall

PPuurree AAlluummiinnuumm HHeeaattssiinnkk

Cool down CPU and Chipset is important for system reliability. Aluminum heat sink provi des bett er heat c onsum ption especially when you are trying to over clocking the CPU.

AAKK7755 OOnnlliinnee MMaannuuaall

DDDD

rrrr

iiii

vvvv

eeee

rrrr

aaaa

nnnn

dddd

UUUU

tttt

iiii

llll

iiii

tttt

yyyy

DDDD

rrrr

iiii

vvvv

eeee

rrrr

aaaa

nnnn

dddd

UUUU

tttt

iiii

llll

There are motherboard drivers and utilities included in AOpen Bonus CD di sc. You don’t need to install all of them in order to boot your system. But after you finish the hardware installation, you have to install your operation system first (suc h as Windows 98) before you can install any drivers or utilities. Please refer to your operation system’s installation guide.

Note: Please follow recommended procedure to install Windows 95

iiii

tttt

yyyy

and Windows 98.

AAKK7755 OOnnlliinnee MMaannuuaall

AAuuttoo--rruunn MMeennuu ffrroomm BBoonnuuss CCDD DDiisscc

You c an use t he auto-run m enu of Bonus CD disc. Choose the utility and driver and sel ect model name.

AAKK7755 OOnnlliinnee MMaannuuaall

IInnssttaalllliinngg OOnnbbooaarrdd SSoouunndd DDrriivveerr

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

AAKK7755 OOnnlliinnee MMaannuuaall

IInnssttaalllliinngg SSiiSS AAGGPP DDrriivveerr

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

AAKK7755 OOnnlliinnee MMaannuuaall

IInnssttaalllliinngg HHaarrddwwaarree MMoonniittoorriinngg UUttiilliittyy

You c an i nstall Hardware Monitori ng Ut i lity to monitor CPU temperature, fans and system voltage. The hardware monitoring function is automatically implemented by the BIOS and utility software. No hardware installation is needed.

AAKK7755 OOnnlliinnee MMaannuuaall

AACCPPII SSuussppeenndd ttoo HHaarrdd DDrriivvee

ACPI Suspend to Hard Drive is basically controlled by Windows operation system. It saves your current work (system status, memory and

screen image) into hard disk, and then the s yst em c an be totally power off. Next time, when power is on, you can resume your original work directly from hard disk within few seconds without go through the Windows booting process and run your application again. If your memory is 64MB, normally, you need to reserve at least 64MB HDD space to save your memory image.

When go into Suspend:

When power-on next time:

System

Image &

Status

System

Image &

Status

Hard

Disk

Hard

Disk

Save into

Restore within seconds

AAKK7755 OOnnlliinnee MMaannuuaall

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

1. Execute "Setup.exe /p j" to install Windows 98

2. After Windows 98's installation is complete, go to the Control Panel > Power Management. a. Set Power Schemes > System Standby to "Never". b. Click on "Hibernate" and select "Enable Hibernate Support" then "Apply". c. Click on the "Advanced" tab, you'll see "Hibernate" on "Power Buttons". Note that this option will only be seen after step b

mentioned above has been completed; otherwise only "Standby" and "S hutdown" will be shown. Select "Hibernate" and "Apply".

3. 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 to be reserved in the disk, e.g. if you have 64 MB DRAM and 16 MB VGA card installed, the system needs at least 80 MB free space. Th e u tili ty will locate the sp a ce automatically.

b. If you assign an individual partition for Win 98, please run "aozvhdd /c /partition". Of course, the system needs to provide

unformatted an empty partition.

4. 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 s o will be taken for the system to save what's in the memory to the hard drive; the larger the memory size the longer this process will tak e.

AAKK7755 OOnnlliinnee MMaannuuaall

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 "ACP I 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

AAKK7755 OOnnlliinnee MMaannuuaall

HKEY_LOCAL_MACHINE

SOFTWARE

MICROSOFT

WINDOWS

CURRENT VERSION

DETECT

ACPI OPTION

b. Right click and select "Modify, change "01" to "02" to make 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 disabled.

Tip: Currently we found onl y ATI 3D Rage Pro AGP card would support ACPI suspend to disk. Please refer to AOpen web site for latest update

AAKK7755 OOnnlliinnee MMaannuuaall

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

AAKK7755 OOnnlliinnee MMaannuuaall

To implement ACPI Suspend to DRAM, please follow the procedures as below:

System Requirement

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

Procedures

1. Changed the following BIOS settings.

BIOS Setup > Power Management Setup > ACPI Function: Enabled

BIOS Setup > Power Management Setup > ACPI Suspend Type: S3.

2. Go to Control Panel > Power Management. Set “Power Buttons” to “Standby”.

3. Press power button or standby button to wake up the system.

AAKK7755 OOnnlliinnee MMaannuuaall

AAAA

RRRR

DDDD

BBBB

IIII

OOOO

SSSS

AAAA

RRRR

DDDD

BBBB

System parameters can be modified by going into BIOS Setup menu, this menu allows you to configure the system parameters and save 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 provides critical low-level support for standard devices such as hard disk drives, serial and parallel ports.

Most BIOS setting of AK75 had optimized by AOpen’s R&D engineering team. But, the default setting of BIOS sti ll can’t fine-tune the chipset controlling entire system. Hence, the rest of this chapt er is intended to guide you through the process of configuring your system using setup.

To enter to BIOS setup menu

IIII

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

OOOO

SSSS

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

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.

AAKK7755 OOnnlliinnee MMaannuuaall

AAbboouutt BBIIOOSS FFuunnccttiioonn DDeessccrriippttiioonn……

AOpen always dedicates to give users a more friendl y computer system. Now, we include all function descriptions of BIOS setup program into the BIOS Flash ROM. When you select one function of BIOS setup program, the function description will appeared at right side of screen. Hence, you don’t need read this manual while you changing the BIOS setting.

Menu Items Select Window Item Function Description Window

AAKK7755 OOnnlliinnee MMaannuuaall

HHooww TToo UUssee AAwwaarrdd™™ BBIIOOSS SSeettuupp PPrrooggrraamm

Generally, you can use the arrow keys to highlight items that you want to choose, then press <Enter> key to select, and us e the <P age 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, you can press <F3> key 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 s ett i ng value f rom CMOS.

AAKK7755 OOnnlliinnee MMaannuuaall

Key Description

F6 Load fail-save setting value from CMOS. F7 Load turbo sett i ng value from CMOS. F10 Save changed setting and exit setup program.

AAKK7755 OOnnlliinnee MMaannuuaall

HHooww TToo EEnntteerr BBIIOOSS SSeettuupp

After you finish the setting of jumpers and connect correct cables. Power on and enter the BIOS Setup, press <Del> during POST

(Power-On Self Test). Choose "L oad Setup Defaults" for recommended optimal performance.

Del

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.

AAKK7755 OOnnlliinnee MMaannuuaall

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 t ogether, 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 flas h 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 Wi ndows 95/98, 98SE/ME, NT4.0/2000, or even the latest Windows XP.

In the meanwhile, in order to provide a much more user-friendly operating environm ent, AOpen EZWinFlash is natively designed to have multi-language function to provide easier way for users’ usage in changing BIOS setting.

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

ossibility failure.

AAKK7755 OOnnlliinnee MMaannuuaall

You may accomplish BIOS upgrade procedure with EZWinFlash by the following steps, and it’s STRONGLY RECOMMMANDED to close all the applications before you start the upgrading.

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

2. Unzip the download BI OS package (ex: WAK75102.ZIP) with WinZip (http://www.winzip.com) in Windows environment.

3. Save the unzi pped fil es i nto a folder, for example, WAK75102.EXE & WAK75102.BIN.

4. Double click on the WAK75102.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 flash steps.

5. You may select preferred language in the main menu, then click [Start Flash] to start the 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 POST to enter BIOS setup, choose "Load Setup Defaults", then “Save & Exit Setup”. 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.

AAKK7755 OOnnlliinnee MMaannuuaall

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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, leadi ng 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 system performance by overclocking which we call them "Overclocker".

This section is dedicated to overclockers. This high performance motherboard is designed for maximum 200MHz CPU bus clock. Some lab tests results showed that 133MHz is

achievable when proper setting and qualified c omponents were presented. Not only that, the CPU clock ratio c an be up to 12.5x that supports almost all of AMD CPUs in the future and provides flexibility for overclockers.

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.

☺

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Warning: The design of this product follows CPU and chipset v endor'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.

AAKK7755 OOnnlliinnee MMaannuuaall

VVGGAA CCaarrdd && HHaarrdd DDiisskk

VGA and HDD is key components for overclocking, for your reference, the following list are what have been successful overclock ed in our lab. Please note that AOpen can not guaranty they can be successful overclocked again. Please check the 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

AAKK7755 OOnnlliinnee MMaannuuaall

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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 into motherboard main chipset, the cost of sound/modem onboard solution can be reduced.

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 Windows 98). This is a bit similar as the PnP 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 transfer 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 first company to support 4X AGP motherboards by both AX6C (Intel 820) and MX64/AX64 (VIA 694x), started from Oct 1999.

. The chipset or super I/O chip needs to provide standard register interface to operating system (such as

AAKK7755 OOnnlliinnee MMaannuuaall

AAMMRR ((AAuuddiioo//MMooddeemm RRiisseerr))

The CODEC circuit of AC97 sound/modem solution can be put on motherboard or put on a riser card (AMR card) that connects to motherboard through AMR connector.

AAOOppeenn BBoonnuuss PPaacckk CCDD

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

AAPPMM ((AAddvvaanncceedd PPoowweerr MMaannaaggeemmeenntt))

Unlike ACPI, BIOS controls most APM power m anagement functions. AOpen Suspend to Hard Drive is a good exam ple 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 t ogeth er. The AT is meaning International Business Machines Corporation (IBM) personal computer/AT’s bus structure.

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.

AAKK7755 OOnnlliinnee MMaannuuaall

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 time 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.

BBIIOOSS ((BBaassiicc IInnppuutt//OOuuttppuutt SSyysstteemm))

BIOS is a set of assembly routine/program that reside in EPROM or Flash ROM. BIOS controls Input/output devices and other hardware devices of motherboard. In general, to provide hardware independent portability, operation system and drivers is required to access BIOS without directly access hardware devices.

BBuuss MMaasstteerr IIDDEE ((DDMMAA mmooddee))

The traditional PIO (Programmable I/O) IDE requires the CPU to involve in all the activities of the IDE access including waiting for the mechanical events. To reduc e the workload of the CPU, the bus master IDE device transfers data from/to memory 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 ((CCoommmmuunniiccaattiioonn aanndd NNeettwwoorrkkiinngg RRiisseerr))

The CNR specification provides the PC industry the opportunit y to deliver a flexible and cost reduced method of implementi ng LAN, home networking, DSL, USB, wireless, audio and modem subsyst ems widely used in today's "connec ted PCs". The CNR specific ation is an open industry specification and is supported by OEMs, IHV card manufacturers, silicon supplier and Microsoft.

AAKK7755 OOnnlliinnee MMaannuuaall

CCOODDEECC ((CCooddiinngg aanndd DDeeccooddiinngg))

Normally, CODEC m eans a circuit that can do digi tal to analog c onversion and also the analog t o digital conversion. It is part of AC97 sound/modem solution.

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 applic ations, 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 devi ces.

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 DIMMs are made by FPM/EDO

and only operate at 5V. Do not conf use them with SDRA M DI MM.

DDMMAA ((DDiirreecctt MMeemmoorryy AAcccceessss))

Channel for communications between the memory and surrounding devices.

, which operate at 3.3V. Note that some old

AAKK7755 OOnnlliinnee MMaannuuaall

EECCCC ((EErrrroorr CChheecckkiinngg aanndd CCoorrrreeccttiioonn))

The ECC mode needs 8 ECC bits for 64-bit data. Each time memory is accessed; ECC bits are updated and checked by a special algorithm. The ECC algorithm has the ability to detec t double-bit error and automatically correct single-bit error while parity mode can only detect single-bit error.

EEDDOO ((EExxtteennddeedd DDaattaa OOuuttppuutt)) MMeemmoorryy

The EDO DRAM technology is actually very similar to FPM (Fast Page Mode). Unlike traditional FPM that tri-states the memory output data to start the pre-charge activity, E DO DRAM holds the memory data valid until the next memory access cycle, that is similar to pipeline effect and reduces one clock state.

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 EPROM. EPROM can only be erased by ultra-violet (UV) light. If BIOS has to be upgraded, you need to remove EPROM from motherboard, clear by UV light, re-program, and then insert back.

AAKK7755 OOnnlliinnee MMaannuuaall

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 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 all ows 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 new package of Intel for Pentium III CPU. It can plug into SKT370 sock et, but require motherboard to add some signals on socket 370. That is, the motherboard needs to be redesigned. In tel is going to ship FC-PGA 370 CPU and phase out slot1 CPU.

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 be 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 flash ROM size is moving to 4M bit on AX6C (Intel 820) and MX3W (Intel 810) motherboard. , AOpen motherboard uses EEPROM for jumper-less and battery-less design.

AAKK7755 OOnnlliinnee MMaannuuaall

FFSSBB ((FFrroonntt SSiiddee BBuuss)) CClloocckk

FSB Clock means CPU external bus clock. CPU internal clock = CPU FSB Clock x CPU Clock Ratio

CC BBuuss

See SMBus.

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IEEE 1394 is a low-cost digital interface originated by Apple Computer as a deskt op LAN and developed by the IEEE 1394 working group. The IEEE 1394 can transport data at 100, 200 or 400 Mbps. One of the solutions to connect di gi tal tel evisi on devi ces together at 200 Mbps. Serial Bus Management provides overall configurat ion 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 t ype of IEEE 1394 data transfer: asynchronous and isochronous. Asynchronous transport is the traditional computer memory-m apped, load and store interface. Data requests are sent to a specific address and an acknowledgment is returned. In additi on to an architecture that scales with silicon technology, IEEE 1394 features a unique isochronous data channel interface. Isochronous data channels provide guaranteed data transport at a pre-determined rate. This is especially important for time-critical multimedia data where just-in-time delivery eliminates the need for costly buffering.

PPaarriittyy BBiitt

The parity mode uses 1 parity bit for each byte, normally it is even parity mode, that is, each time the memory data is updated, parity bit will be adjusted to have even count "1" for each byte. When next time, if memory is read with odd number of "1", the parity error is occurred and this is called single bit error detection.

AAKK7755 OOnnlliinnee MMaannuuaall

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.

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 DDDDRR DDRRAAMM

Based on FSB frequency, the DDR DRAM has 200MHz and 266MHz two type 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. Hence, the PC-1600 DDR DRAM is working with 100MHz and PC-2100 DDR DRAM is working with 133MHz FSB frequency.

PPCCII ((PPeerriipphheerraall CCoommppoonneenntt IInntteerrffaaccee)) BBuuss

Bus for the internal connection of peripheral devices, high-speed data channel between the computer and expansion card.

AAKK7755 OOnnlliinnee MMaannuuaall

PPDDFF FFoorrmmaatt

A file format for electronic document, PDF format is independent from platform, you can read PDF file under W indows, Unix, Linux, Ma c … with different PDF reader. You can also read PDF file by web brows er such as IE and Netscape, note that you need t o install PDF plug -in first (Included in Acrobat Reader).

PPnnPP ((PPlluugg aanndd PPllaayy))

The PnP specification suggests a standard register interface for both BIOS and operating system (such as Windows 95). These registers are used by BIOS and operating system to configure system resource and prevent any conflicts. PnP BIOS or operating system will automatically allocate the IRQ/DMA/Memory. Currently, almost all the PCI cards and most ISA cards are already PnP compliant.

PPOOSSTT ((PPoowweerr--OOnn SSeellff TTeesstt))

The BIOS self-test procedure after power-on, sometimes, it is the first or the second screen shown on your monitor during 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 SDRAM. RDRAM is cascaded in channel operation. For Intel 820, only one RDRAM channel is supported, 16-bit data per channel, and this channel may have maximum 32 RDRAM devices, no matter how many RIMM

sockets.

AAKK7755 OOnnlliinnee MMaannuuaall

RRIIMMMM ((RRaammbbuuss IInnlliinnee MMeemmoorryy MMoodduullee))

184-pin memory module that supports RDRAM memory technology. A RIMM memory module may contain up to maximum of 16 RDRAM devices.

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

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

SShhaaddooww E

A memory space in Flash-ROM to simulate E2PROM operation, AOpen motherboard uses Shadow E2PROM for jumper-less and battery-less design

PPRROOMM

SSIIMMMM ((SSiinnggllee IInn LLiinnee MMeemmoorryy MMoodduullee))

SIMM socket is only 72-pin, and is only single side. The golden finger signals on each side of PCB are identic al. That is why it was called Single In Line. SIMM is made by FPM or EDO

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

to use burst mode transf er. SDRAM comes in 64-bit 168-pin DIMM and operates at

AAKK7755 OOnnlliinnee MMaannuuaall

SSMMBBuuss ((SSyysstteemm MMaannaaggeemmeenntt BBuuss))

SMBus is also called I2C bus. It is a two-wire bus developed for com ponent communication (especially for semiconductor IC). For example, set clock of clock generator for jumper-less motherboard. The data transfer rate of SMBus is only 100Kbit/s, it allows one host to communicate with CPU and many masters and slaves to send/receive message.

SSPPDD ((SSeerriiaall PPrreesseennccee DDeetteecctt))

SPD is a small ROM or EEPROM device resided on the DIMM or RIMM. SPD stores memory module inf ormation such as DRAM timing and chip parameters. SPD can be used by BIOS

UUllttrraa DDMMAA

Ultra DMA (or, more accurately, Ultra DMA/33) is a protocol for transferring data between a hard disk drive through the computer’s data path (or bus) to the computer’s random acc ess m em ory (RAM). The Ultra DMA/33 protocol transfers data in burst mode at a rate of

33.3MB/s, twice as fast as the previous Direct Access Memory (DMA) by the Quantum corporation, makes of hard disk drives, and Intel, makes of chipset that 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-intensive and applications that require large amounts of access to data on the hard disk drive. Ult ra DMA uses Cyclical Redundancy Checking (CRC), offering a new level of data protection. Ultra DMA 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

to decide best timing for this DIMM or RIMM.

interface. Ultra DMA was developed as a proposed industry standard

AAKK7755 OOnnlliinnee MMaannuuaall

UUSSBB ((UUnniivveerrssaall SSeerriiaall BBuuss))

USB is a 4-pin serial peripheral bus that is capable of cascading low/medium speed peripherals (less than 10Mbit/s) such as keyboard, mouse, joystick, scanner, printer and modem. With USB, the traditional complex cables from back panel of your PC can be eliminated.

VVCCMM ((VViirrttuuaall CChhaannnneell MMeemmoorryy))

NEC’s Virtual Channel Memory (VCM) is a new DRAM core architecture that dramatically improves the memory system ’s ability to service multimedia requirements. VCM increases memory bus efficiency and performance of any DRA M technology by providing a s et of fast static registers between the memory core and I/O pins. Using VCM technology results in reduced data access latency and reduced power consumption.

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/

) for windows environment.

AAKK7755 OOnnlliinnee MMaannuuaall

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

Turn off the power and unplug the AC power cable, then remove all of the add-on

cards and cables, including VGA, IDE, FDD, COM1, COM2 and printer.

Make sure if all jumper settings are correct .

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Start

Clear CMOS

AAKK7755 OOnnlliinnee MMaannuuaall

Continue

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

Turn on the power

and check if the power

supply and CPU fan work

properly.

The problem is probably caused by

power supply or motherboard failure Please contact your reseller or local distributor for repairing.

NoYes

AAKK7755 OOnnlliinnee MMaannuuaall

Press <Ctrl> and <Alt> key at the same time, hold them

and then press <Del> to reboot the system.

Continue

Check if there is display?

Yes

Check if the system

reboots?

Yes

Perhaps your VGA card

or monitor is defective.

It is very possible that you

keyboard is defective.

AAKK7755 OOnnlliinnee MMaannuuaall

During system rebooting, press <Del> to enter BIOS setup.

Choose “Load Setup Default”.

Turn off the system and re-connect IDE cable.

Re-install the operating system such as Windows 98.

Continue

Check if the system can

reboot successfully?

Yes

End

The problem should be

caused by the IDE cable or HDD itself.

AAKK7755 OOnnlliinnee MMaannuuaall

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Dear Customer, Thanks for choosing AOpen products. To provide the best and fastest service to our customer is our first priority. However, we receive

numerous emails and phone-calls worldwide everyday, it is very hard for us to serve everyone on time. We recommend you follow the procedures below and seek help before contact us. With your help, we can then continue to provide the best quality service to more customers.

Thanks very much for your understanding! AOpen T echnical Supporting Team

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Online Manual: Please check the manual carefully and make sure the jumper settings and installation procedure are correct.

http://www.aopen.com/tech/download/manual/default.htm

Test Report: We recommend choosing board/card/device from the compatibility test reports for assembling your PC.

http://www.aopen.com/tech/report/default.htm

FAQ: The latest FAQ (Frequently Asked Questions) may contain a solution to your problem.

http://www.aopen.com/tech/faq/default.htm

Download Software: Check out this table to get the latest updated BIOS/utility and drivers.

http://www.aopen.com/tech/download/default.htm

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PPaarrtt NNuummbbeerr aanndd SSeerriiaall NNuummbbeerr

The Part Number and Serial number are printed on bar code label. You can find this bar code label on the outside packing, on ISA/CPU slot or on component side of PCB. For example:

P/N: 91.88110.201 is part number, S/N: 91949378KN73 is serial number.

News Group: Your problem probably had been answered by our support engineer or professional users on the news group.

http://www.aopen.com/tech/newsgrp/default.htm

Contact Distributors/Resellers: We sell our products through resellers and integrators. They should know your system configuration very well and should be able to solve your problem efficiently and provide important reference for you if next time you want to buy something else from them.

Contact Us: Please prepare detail system configuration and error symptom before contacting us. The part number, serial number and BIOS version are also very helpful.

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AAKK7755 OOnnlliinnee MMaannuuaall

MMooddeell nnaammee aanndd BBIIOOSS vveerrssiioonn

Model name and BIOS version can be found on upper left corner of first boot screen (POST screen). For example:

AK75 is model name of motherboard; R1.20 is BIOS version.

AK75 R1.20 Feb.01.2001 AOpen Inc.

ward Plug and Play BIOS Extension v1.0A

AAKK7755 OOnnlliinnee MMaannuuaall

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Thank you for choosing AOpen product. AOpen encourages you to spend few minutes in completing the following product registration. To register your product will ensure the high quality of services from AOpen. After the registration, you will:

• Have opportunities to play online slot machine and win a prize from AOpen by accumulating your bonuses for later prize

exchange.

• Be upgraded to gold membership of Club AOpen program.

• Receive email notification about product safety alerts. Its purpose is to alert consumers quickly and conveniently when products

contain technical issues.

• Receive email notification about latest product's announcements.

• Be able to personalize your AOpen web pages.

• Receive e-mail notification about latest BIOS/Driver/Software release information.

• Have opportunities to participate special product promotional programs.

• Enjoy higher service priority to receive technical assistance provided by AOpen specialists worldwide.

• Be able to join the discussions of web-based news groups.

AOpen makes sure that the information you provide is encrypted, so that it cannot be read or intercepted by ot her people or companies. Further, AOpen will not disclose any of information you submitted under any conditions. Please consult our online privacy policy information on our company policy.

Note: If registering products purchased from different dealers/retails and/or purchased on different dates,

lease submit a separate form for each product.

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for further

AAKK7755 OOnnlliinnee MMaannuuaall

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Please do not hesitate contact us if you have any problem about our products. Any opinion will be appreciated.

Pacific Rim

Open Inc. Tel: 886-2-3789-5888 Fax: 886-2-3789-5899

Europe

Open Computer b.v. Tel: 31-73-645-9516 Fax: 31-73-645-9604

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Open America Inc. Tel: 1-510-498-8928 Fax: 1-408-922-2935

China 艾尔鹏国际上海(股)有限公司 Tel: 86-21-6225-8622 Fax: 86-21-6225-7926

Web Site: http://www.aopen.com

E-mail: Send us email by going through the contact form below. English http://www.aopen.com/tech/contact/techusa.htm Japanese http://www.aopen.co.jp/tech/contact/techjp.htm Chinese http://www.aopen.com.tw/tech/contact/techtw.htm German http://www.aopencom.de/tech/contact/techde.htm French http:/france.aopen.com/tech/contact/techfr.htm Simplified Chinese http://www.aopen.com.cn/tech/contact/techcn.htm

Germany

Open Computer GmbH. Tel: 49-2102-157700 Fax: 49-2102-157799

Japan

Open Japan Inc. Tel: 81-048-290-1800 Fax: 81-048-290-1820

AOpen AK75 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

AK75

Chipset

Expansion Slots

Memory

Ultra DMA 33/66/100 Bus Master IDE

Six USB Connectors

1MHz Stepping Frequency Adjustment

Watch Dog Timer

Power Management/Plug and Play

Hardware Monitoring Management

Enhanced ACPI

Super Multi-I/O

Motherboard Map

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