Aopen DX34RU User Manual

DDXX3344RR--UU OOnnlliinnee MMaannuuaall

Overview

DX34R-U

DOC. NO.: DX34RU-OL-E0112B

1

Installation

Hardware

Drivers &

Utilities

BIOS Setup

AWARD

Glossary

Troubleshooting &

Technical Support

DDXX3344RR--UU OOnnlliinnee MMaannuuaall

WWhhaatt’’ss iinn tthhiiss mmaannuuaall

DX34R-U ...........................................................................................................................................1

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

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

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

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

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

Quick Installation Procedure..........................................................................................................................................15

Motherboard Map ..........................................................................................................................................................16

Block Diagram ...............................................................................................................................................................17

Hard war e Ins tal lat ion..................................................................................................................18

About “Optional” and “Upgrade Optional”…...................................................................................................................19

JP14 Clear CMOS Data .................................................................................................................................................2 0

CPU Installation ............................................................................................................................................................. 21

JP23 FSB/PCI Clock Ratio ............................................................................................................................................23

CPU Jumper-less Design............................................................................................................................................... 25

CPU and Housing Fan Connector (with H/W Monito ring) ...............................................................................................3 0

DIMM Sockets ...............................................................................................................................................................31

Front Panel Connector ..................................................................................................................................................34

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ATX Power Connector...................................................................................................................................................35

AC Power Auto Recovery ..............................................................................................................................................36

Keyboard/Mouse Wake-up.............................................................................................................................................36

IDE, Floppy, IDE RAID Connector .................................................................................................................................37

WOM (Zero Voltage Wake on Modem) Connector.........................................................................................................40

WOL (Wake on LAN).....................................................................................................................................................43

AGP (Accelerated Graphic Port) Expansion Slot ...........................................................................................................45

CNR (Communication and Network Riser) Expansion Slot ............................................................................................47

PC99 Color Coded Back Panel......................................................................................................................................48

Support 2nd USB Port.....................................................................................................................................................49

Chassis Intrusion Connector.......................................................................................................................................... 50

JP12 Enable/Disable Onboard Sound ...........................................................................................................................51

CD Audio Connector......................................................................................................................................................52

Modem Audio Connector ...............................................................................................................................................53

AUX-IN Connector.........................................................................................................................................................54

Front Audio Connector...................................................................................................................................................55

Dr. LED Connector ........................................................................................................................................................56

Battery-less and Long Life Design.................................................................................................................................58

Over-current Protection .................................................................................................................................................59

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Hardware Monitoring .....................................................................................................................................................60

Resettable Fuse ............................................................................................................................................................61

2200

μf

Low ESR Capacitor..........................................................................................................................................62

Layout (Frequency Isolation Wall) .................................................................................................................................64

Pure Aluminum Heatsink ...............................................................................................................................................65

Driver and Utility.......................................................................................................................... 6 6

Auto-run Menu from Bonus CD Disc..............................................................................................................................67

Installing VIA 4 in 1 Driver.............................................................................................................................................68

Installing Onboard Sound Driver....................................................................................................................................69

Installing LAN Driver ......................................................................................................................................................70

Install Onboard IDE RAID Driver ...................................................................................................................................71

Install FastCheck™ Monitoring Utility ............................................................................................................................71

ACPI Suspend to Hard Drive......................................................................................................................................... 72

ACPI Suspend to RAM (STR)........................................................................................................................................76

AWARD BIOS ................................................................................................................................78

About BIOS Function Description…...............................................................................................................................79

How To Use Award™ BIOS Setup Program...................................................................................................................80

How To Enter BIOS Setup .............................................................................................................................................82

BIOS Upgrade............................................................................................................................................................... 83

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Overclocking ................................................................................................................................85

VGA Card & Hard Disk.................................................................................................................................................. 86

Glossary ....................................................................................................................................... 8 7

AC97 .............................................................................................................................................................................87

ACPI (Advanced Configuration & Power Interface)........................................................................................................87

AGP (Accelerated Graphic Port) .................................................................................................................................... 87

AMR (Audio/Modem Riser)............................................................................................................................................88

AOpen Bonus Pack CD .................................................................................................................................................88

APM (Advanced Power Management)...........................................................................................................................88

ATA (AT Attachment)......................................................................................................................................................88

ATA/66...........................................................................................................................................................................88

ATA/100.........................................................................................................................................................................89

BIOS (Basic Input/Output Sys tem) ................................................................................................................................ 89

Bus Master IDE (DMA mode).........................................................................................................................................89

CNR (Communication and Networking Riser)................................................................................................................89

CODEC (Coding and Decoding)....................................................................................................................................90

DDR (Double Data Rated) SDRAM................................................................................................................................90

DIMM (Dual In Line Memory Module) ............................................................................................................................90

DMA (Direct Memory Access) ........................................................................................................................................90

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ECC (Error Checking and Correction)............................................................................................................................91

EDO (Extended Data Output) Memory...........................................................................................................................91

EEPROM (Electronic Erasable Programmable ROM)....................................................................................................91

EPROM (Erasable Programmable ROM).......................................................................................................................91

EV6 Bus ........................................................................................................................................................................92

FCC DoC (Declaration of Conformity)............................................................................................................................92

FC-PGA (Flip Chip-Pin Grid Array)................................................................................................................................ 92

Flash ROM ....................................................................................................................................................................92

FSB (Front Side Bus) Clock........................................................................................................................................... 93

I2C Bus ..........................................................................................................................................................................93

IEEE 1394 .....................................................................................................................................................................93

Parity Bit ........................................................................................................................................................................94

PBSRAM (Pipelined Burst SRAM) .................................................................................................................................94

PC-100 DIMM ................................................................................................................................................................ 94

PC-133 DIMM ................................................................................................................................................................ 94

PC-1600 or PC-2100 DDR DRAM .................................................................................................................................95

PCI (Peripheral Component Interface) Bus....................................................................................................................95

PDF Format...................................................................................................................................................................95

PnP (Plug and Play) ......................................................................................................................................................95

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POST (Power-On Self Test)........................................................................................................................................... 96

RDRAM (Rambus DRAM)..............................................................................................................................................96

RIMM (Rambus Inline Memory Module).........................................................................................................................96

SDRAM (Synchronous DRAM) ......................................................................................................................................96

Shadow E2PROM ..........................................................................................................................................................97

SIMM (Single In Line M emory M odule)..........................................................................................................................97

SMBus (System Management Bus) ...............................................................................................................................97

SPD (Serial Presence Detect) .......................................................................................................................................97

Ultra DMA ...................................................................................................................................................................... 98

USB (Universal Serial B us) ............................................................................................................................................ 98

VCM (Virtual Channel Memory).....................................................................................................................................99

ZIP file...........................................................................................................................................................................99

Troubleshooting......................................................................................................................... 1 0 0

Technical Support ......................................................................................................................104

Product Registration..................................................................................................................10 7

How to Conta ct Us.....................................................................................................................108

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YYoouu MMuusstt NNoottiiccee

Adobe, the Adobe logo, Acrobat is trademarks of Adobe Systems Incorporated.
AMD, the AMD logo, Athlon and Duron are trademarks of Advanced Micro Devices, Inc.
Intel, the Intel logo, Intel Celeron, Pentium II, Pentium III are trademarks of Intel Corporation.
Microsoft, Windows, and Windows logo are either registered trademarks or trademarks of Microsoft Corporation in the United

States and/or other countries.
All product and brand names used on this manual are used for identification purposes only and may be the registered

trademarks of their respective owners.

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

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

©

1996-2000, AOpen Inc. All Rights 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 later
chapters. Please keep this manual carefully for future upgrades or system configuration changes. This Online Manual is saved
in PDF format
get free download from Adobe web site

Although this Online Manual is optimized for screen viewing, it is still capable for hardcopy printing, you can print it by A4 paper
size and set 2 pages per A4 sheet on your printer. To do so, choose File > Page Setup and follow the instruction of your printer
driver.

Thanks for the help of saving our earth.

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

.

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OOvveerrvviieeww

Thank you for choosing AOpen DX34R-U motherboard. The DX34R-U is Intel® Socket 370 motherboard (M/B) based on the
ATX form factor featuring the VIA Apollo Pro 133T chipset

motherboard can support dual CPU for Intel
Celeron™**** processor and 66/100/133MHz Front Side Bus (FSB)
supports AGP 1X/2X/4X mode and pipelined spilt-transaction long burst transfer up to 1056MB/sec. According to different
customer’s requirements, 32, 64, 128, 256 and 512MB SDRAM DIMM modules can be applied to the motherboard and the
maximum memory size can be up to 2 GB. The on-board IDE controller supports Ultra DMA
rate up to 100MB/s. DX34R-U equipped with a Promise
performance and fault tolerance. Further flexibility can be achieved by taking advantage of the Communication and Network

Riser (CNR) card option that allows audio, modem on a single baseboard design. More

than that, on the strength of LSI 80225 PHY on board, which is an
highly-integrated Platform LAN Connect device, it provides 10/100M bps
Ethernet for office and home use. Besides, the DX34R-U motherboard has an
AD 1885 AC97
magic surround stereo sound to let people enjoy working with it. Now, enjoy all
features from AOpen DX34R-U motherboard.

*Note 1: Only the Tualatin CPU with 512 K cache are supported on this dual CPU motherboard.
*Note 2: Only one Celeron CPU can be inserted on this dual CPU motherboard.

®

Socket 370 series Pentium® III (Both Coppermine & Tualatin**** are supported) &

CODEC chipset onboard for provides high performance and

. As high performance chipset built in the M/B, the DX34R-U

clock. In the AGP performance, it has one AGP slot and

®

FastTrak™ 100 Lite IDE RAID controller that provides high

33/66/100 mode and the transfer

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FFeeaattuurree HHiigghhlliigghhtt

CPU

Supports dual CPU Intel® Socket 370 Pentium® III (Both Coppermine & Tualatin**** are supported) & Celeron™****
533MHz~1.2GHz+ with 66/100/133MHz Front Side Bus (FSB)
delicate design with terminator circuit implemented on CPU socket 2, please use CPU socket 1 if only one CPU is going to be
installed. Additionally, we highly recommend you to install the same types of CPU if two CPU are installed.

*Note 1: Only the Tualatin CPU with 512 K cache are supported on this dual CPU motherboard.
*Note 2: Only one Celeron CPU can be inserted on this dual CPU motherboard.

designed for Socket 370 technology. In consistent with AOpen’s

Chipset

With the VIA Apollo Pro 133T chipset, this motherboard contains the various controller inclusive of 32-bit Accelerated Graphics
Port (AGP), 32-bit PCI bus and 64-bit advanced high performance DRAM. Because of its powerful features, CPU Front Side Bus
(FSB) of DX34R-U can operate easily at 66/100/133MHz. This chipset also supports Ultra DMA 33/66/100 (with VIA
VT82C694T and CT8231) EIDE, USB and keyboard/ PS2 Mouse interface plus RTC/CMOS on chip.

®

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Expansion Slots

Including five 32-bit/33MHz PCI, one CNR and one AGP 4X slots. The PCI local bus throughput can be up to 132MB/s. The

Communication & Nectworking Riser (CNR)

Modem/Audio card. The Accelerated Graphics Port (AGP)
speed. The AGP video cards support data transfer rate up to 1056MB/s. As DX34R-U motherboard includes one AGP expansion
slot for a bus mastering AGP graphic card, For AD and SBA signaling, DX34R-U motherboard can support 133MHz 2X/4X mode.
Of five PCI slots provided, DX34R-U supports all master PCI slots for arbitration and decoding functions.

slot provided from DX34R-U motherboard can support CNR interface for a

specification provides a new level of video display sophistication and

Memory

Provides four 168-pin SDRAM DIMM socket that support up to 2GB of PC-100/133 compliant SDRAM (Synchronous Dynamic
Random Access Memory). 32, 64, 128, 256 and 512MB SDRAM DIMM modules are supported.

LAN Port

On the strength of LSI 80225 PHY on board, which is an highly-integrated Platform LAN Connect device, it provides 10/100
Mbps Ethernet for office and home use.

Ultra DMA 33/66/100 Bus Mater 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.

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On-board ATA/100 IDE RAID

1. Supports data striping (RAID 0) and mirroring (RAID 1). Provides dramatic increase in drive performance and/or fault
tolerant options. Offers performance customization and data rebuilds from the BIOS menu. Mirroring supports automatic
background rebuilds. Fault tolerance can be restored automatically without rebooting.

2. Supports up to four IDE drives which capacities are more than 8.4GB on the two IDE RAID connectors while still supporting
four IDE devices on the motherboard. The burst data transfer rates can up to 100MB/s from ATA/100 drives to boot overall
system performance.

3. Supports IDE Bus Master operation allows multi-tasking during disk drives transfer which increase CPU efficiency, then the
CPU is free to process task during IDE data transfer through PCI bus interface to/from system memory.

On-board AC97 Sound

DX34R-U M/B uses the AD 1885 AC97 sound chip. This on-board audio includes a complete audio recording and playback
system.

Four USB Connectors

Providing two ports, four USB connectors for USB interface devices, such as m ouse, keyboard, m odem, scanner, etc.

Dr. LED

The Dr. LED has 8 LEDs on the DX34R-U motherboard can easily shows what kind of problems you may encounter.

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Power Management/Plug and Play

The DX34R-U Motherboard supports the power management function that confirms to the power-saving standards of the U.S.
Environmental Protection Agency (EPA) Energy Star program. It also offers Plug-and-Play
configuration problems, thus making the system much more user-friendlier.

, which helps save users from

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), WOM (Wake On Modem), WOL (Wake On LAN) features.

Super Multi-I/O

The DX34R-U provides one high-speed UART compatible serial port and one parallel port with EPP and ECP capabilities. If you
need more serial ports, please considering using PCI serial port add-on card.

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QQuuiicckk IInnssttaallllaattiioonn PPrroocceedduurree

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

1. Installing CPU 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. Insta lli ng O pe rat in g Sys tem (s uch as W ind ows 98 )

11. Installing Driver and Utility

15

r

r

r

A

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AC’97 CODEC Chipset

LSI 80225 chipset

AGP 4x Expansion Slot

CD-IN

AUX-IN

MODEM-CN

CNR Expansion Slot

JP12 On-board Sound

Enable/Disable Jumper

32bit PCI Expansion Slot x 5

Front Audio Connecto

Support 2nd USB Port

Chassis Intrusion Connector

JP14 Clear CMOS Jumper

Dr. LED Connector

WOL (Wake On LAN)

Front Panel Connecto

FAN3 (with H/W Monitoring)

IrDA Connecto

IDE RA ID C o n nec t o r

Motherboar d M ap

TA33/66/100 IDE Connector x2

16

Resettable Fuse

JP28 Keyboard/Mouse
Wake up Jumper

FAN2 (with H/W Monitoring)

TX Power Connector

2200μF Low ESR Capacitors

CPU Fan (with H/W Moni toring)

370-pin CPU Socket with Voltage
& Frequency Auto-detection,
supports Intel
(Both Coppermine & Tualatin with
512K Cache are supported) & o ne
Celeron 533MHz~1.13GHz+ CPU

VIA Apollo Pro 133T Chipset with
Enlarged Aluminum Heatsink

JP23 FSB Select Jumper

PC133 DIMM Slot x4

FDD Connector

®

Pentium™ III

DDXX3344RR--UU OOnnlliinnee MMaannuuaall

BBlloocckk DDiiaaggrraamm

Socket 370 Intel

Pentium III (Both Tualatin

with 51 2K Cache &

Coppermine are supported)

/one Celeron CPU

66/100/133MHz

PC-100/133 SDRAM

DIMM Socket x4

System Bus

AGP 4X Slot

LAN connect Component

Floppy Disk Drive x2

Up to 512MB

North Bri dge

VIA

VT82C694T

USB

Connector

x4

PCI Bus

1stUSB Port

2ndUSB Port

LSI

80225

PHY

32-bit PCI Slot x5

Promise
FastTrak
100 IDE

RAID

Controller

ATA

33/66100

Primary

Channel

Secondary

Channel

Primary

Channel

Secondary

Channel

South

Bridge

VIA VT8231

Supports ATA100 IDE RAID 0

and RAID 1 Solution

AC’97 Link

Firmware Hub

Audio CODEC

Modem CO DEC

CNR Slot

4MbitFlash EEPROM

Parallel Port

Serial P o rt x1

IDE Drive x4

IDE Drive x4

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HHaarrddwwaarree IInnssttaallllaattiioonn

This chapter describes jumpers, connectors and hardware devices of this motherboard.

Note: El ectrostatic 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 t hroughout any
procedure requiring ESD protection.

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AAbboouutt ““OOppttiioonnaall”” aanndd ““UUppggrraaddee OOppttiioonnaall””……

W hen you read this online manual and start to assemble your computer system, you may find some of functions are called
“Optional”, and some are called “Upgrade Optional”. Though all AOpen motherboards include many 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.tw

for more detail information.

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JJPP1144 CClleeaarr CCMMOOSS DDaattaa

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

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

2. Remove ATX power cable from connector PWR2.

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

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

5. Connect ATX power cable back to connector PWR2.

11

Normal Operation

Tip: W hen should I Clear CMOS?

1. Boot fa il bec aus e of ove rc lock i ng…

2. Forget password…

3. Troubleshooting…

Clear CMOS

(default)

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CCPPUU IInnssttaallllaattiioonn

This motherboard supports Intel® Pentium III®(Both Coppermine and Tualatin with 512K Cache are supported) and one
Celeron™ Socket 370 series CPU. In consistent with AOpen’s delicate design with terminator circuit implemented on CPU

socket 2, please use CPU socket 1 if only one CPU is going to be installed. Be careful of CPU orientation when you plug it into
CPU socket. We highly recommend you to install the same types of CPU if two CPU are installed.

1. Pull up the CPU socket level 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 ins ert the CPU into
the socket.

CPU pin 1

and cut edge

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

CPU socket

Lever

CPU cut edge

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

Note: These pictures are 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
ma

damage the CPU.

Note: This socket supports FC-PGA

FC-PGA2 package CPU, which is the
latest CPU package developed by Intel.
We strongly recommend you not to inser
former PPGA-package CPU onto it.

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JJPP2233 FFSSBB//PPCCII CClloocckk RRaattiioo

This jumper is used to specify the relationship of PCI and FSB clock. Generally speaking, if you are not overclockers, we
recommend you to set at the default setting.

Warning: VIA Apollo Pro
133T chipset supports
maximum 133MHz FSB and
66MHz AGP clock, higher
clock setting may cause
serious system damage.

Pin 1

1

AAuuttoo DDeetteecctt

((DDeeffaauulltt))

FFSSBB==113333MMHHzz

1

1

FFSSBB==110000MMHHzz

1

FFSSBB==6666MMHHzz

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PCI Clock = CPU FSB Clock / Clock Ratio
AGP Clock = PCI Clock x 2

Clock Ratio CPU (Host ) PCI AGP Memory
2X 66MHz 33MHz 66MHz PCI x3
2X, overclocking 75MHz 37.5MHz 75MHz PCI x3
3X 100MHz 33MHz 66MHz PCI x3
3X, overclocking 110MHz 36.7MHz 73MHz PCI x3
4X 133MHz 33MHz 66MHz PCI x3 or x4
4X, overclocking 147MHz 36.8 MHz 73MHz PC I x3 or x4

Warning: VIA 694T chipset supports maximum 133MHz FSB and
66MHz AGP clock, higher clock setting may cause serious system
damage.

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CCPPUU JJuummppeerr--lleessss DDeessiiggnn

CPU VID signal and SMbus clock generator provide CPU vol tage auto-detection and allows the us er to set the CPU frequency
through the BIOS setup
designs are eliminated. There will be no worry of wrong CPU voltage detection.

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

Intel® Socket 370

Pentium III &
Celeron CPU

CPU VID signal

Power Regulator

(Automatically generat es CPU voltage)

CPU Freq. Ratio

CPU voltage

Clock

Generator

BIOS

Controlled

Circuit

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FFuullll--rraannggee AAddjjuussttaabbllee CCPPUU CCoorree VVoollttaaggee

This function is dedicated to overclockers, AOpen works together with SEHTECH to develop a special chip SC1189 that
supports Adjustable CPU Core Voltage from 1.05V to 1.825 by 0.05V stepping. But this motherboard can also automatically
detect CPU VID signal and generates proper CP U core voltage.

BIOS Setup > Frequency/Voltage Control > CPU Voltage Setting

Warning: Higher CPU core voltage may be

able to increase CPU speed for overclocking,
but you may damage the CPU or reduce the
CPU lifecycle

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SSeettttiinngg CCPPUU FFrreeqquueennccy

This motherboard is CPU jumper-less design, you c an set CPU frequency through the BIOS setup, and no jumpers or swi tches
are needed.

BIOS Setup > Frequency/Voltage Control > CPU Speed Setting

CPU Ratio

CPU FSB
(By BIOS Table)

3x, 3.5x, 4x, 4.5x, 5x, 5.5x, 6x, 6.5x, 7x, 7.5x, 8 x, 8.5x, 9x, 9.5 x, 10x, 10.5 x, 11x,

11.5x, 12x, 12.5x, 13x, 13.5x, 14 x, 14.5x, 15x, 15. 5 x and 16x

66.6, 79, 83.3, 85, 87.5, 90, 92.5, 95, 100, 110, 120, 124, 1 29, 133.3, 138, 143, 147 ,
152, 154, 157, 159, 162, 166, 171, 1 80, 190, an d 200 MHz

Warning: VIA Apollo 133T chipset supports
maximum 133MHz FSB and 66MHz AGP clock,
higher clock setting may cause serious system
damage.

y

27

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SSuuppppoorrtteedd CCPPUU FFrreeqquueennccyy

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

AGP Clock = PCI Clock x 2

CPU

Celeron 533 533MHz 66MHz 8x
Celeron 566 566MHz 66MHz 8.5x
Celeron 600 600MHz 66MHz 9x
Celeron 667 667MHz 66MHz 10x
Celeron 700 700MHz 66MHz 10.5
Pentium III 500E 500MHz 100MHz 5x
Pentium III 600E 600MHz 100MHz 6x
Pentium III 650E 650MHz 100MHz 6.5x
Pentium III 700E 700MHz 100MHz 7x
Pentium III 750E 750MHz 100MHz 7.5
Pentium III 800E 800MHz 100MHz 8x
Pentium III 850E 850MHz 100MHz 8.5x
Pentium III 533EB 533MHz 133MHz 4x
Pentium III 600EB 600MHz 133MHz 4.5x

CPU Core

Frequenc y

Note: This motherboard support CPU
auto-detection function. Hence, you
don’t need to setup the CP U frequency
manuall

.

FSB Clock Ratio

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Pentium III 667EB 667MHz 133MHz 5x
Pentium III 733EB 733MHz 133MHz 5.5
Pentium III 800EB 800MHz 133MHz 6x
Pentium III 866EB 866MHz 133MHz 6.5
Pentium III 933EB 933MHz 133MHz 7x
Pentium III 1G 1GHz 133MHz 7.5 x
Pentium III 1.13G 1.13GHz 133MHz 8.5x

Warning: VIA Apollo Pro 133T chipset supports maximum
133MHz FSB and 66MHz AGP cl ock , higher c lock setting may
cause serious system damage.

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CCPPUU aanndd HHoouussiinngg FFaann CCoonnnneeccttoorr ((wwiitthh HH//WW MMoonniittoorriinngg))

Plug in t he CPU fan cab le to the 3-pin CPU FAN connector. If you have housing fan, you can also plug it on System FAN
connector and AUX FAN .

FAN3

Connector

CPU FAN

Connector

Note: Some CPU fans do not have
sensor pin, so that cannot support fan

FAN2

Connector

GND
+12V
SENSOR

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DDIIMMMM SSoocckkeettss

This motherboard has four 168-pin DIMM s ockets that allow you to install PC100 or PC133 memory up to 2GB.

DIMM1
DIMM2
DIMM3

DIMM4

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DIMM can be single side or double s ide; it has 64 bit data and 2 or 4 clock signals. W e strongly recommend choosing 4-clock
SDRAM for its reliabil ity

Note: Based on VIA Apollo Pro 133T chipset specification, we
recommend you that using double-side SDRAM modules w ith DIMM
socket 1 & 2. By the way, do not insert the single-side DIMM module
in the DIMM socket 4 when DIMM socket 3 left blank. This will cause
the size report error of DIMM.

SDRAM DIMM Modul e

ECC-Register DIMM Modul e

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HHooww ttoo IInnssttaallll MMeemmoorryy MMoodduulleess

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

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

2. Insert the module straight down to the DIMM slot with bot h hands and press down firmly until the DIMM module is securely
in place.

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

Tab

20 pins 60 pins 88 pins

Note: The ta bs of t he DIMM slot
will close-up to hold the DIMM in
place when the DIMM touches
the slot’s bottom.

33

e

A

DDXX3344RR--UU OOnnlliinnee MMaannuuaall

FFrroonntt PPaanneell CCoonnnneeccttoorr

Pin

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

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

Suspend Type ACPI L E D

Power on Suspend (S1) Flashing for every second
Suspend to RAM (S3) or Suspend to Disk (S4) The LED will be turned off

IDE LED

Speaker

1

SPWR

CPI & PWR

LED

Reset

SPEAKER

NC
NC

+5V
IDE LED
IDE LED

+5V

+5V

GND

NC

1

SPWR
GND
ACPILED­ GND
AC PILED
NC
NC
GND
RESET
GND

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AATTXX PPoowweerr CCoonnnneeccttoorr

The ATX power supply uses 20-pin connector shown below. Make sure you plug in the right direction.

+12V

5VSB

PW-OK

COM

+5V

COM

+5V

COM

+3.3V
+3.3V

+5V
+5V

-5V
COM
COM

COM
PS-ON
COM

-12V
+3.3V

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AACC PPoowweerr AAuuttoo RReeccoovveerryy

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 m otherboard implements
an AC Power Auto Recovery function t o solve t his problem.

KKeeyybbooaarrdd//MMoouussee WWaakkee--uupp

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

Pin 1

JP28

KB/Mouse Wake-up

1

Disable

(Default)

Enable

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IIDDEE,, FFllooppppyy,, IIDDEE RRAAIIDD CCoonnnneeccttoorr

Connect 34-pin floppy cable and 40-pin, 80-wire IDE c able to floppy connector FDC and IDE / IDE RAID connector. Be careful of
the pin1 orientation. Wrong orientation may cause system damage.

Primary

Slave (2nd)

Primary

Master (1st)

IDE RAID 1 (Primary)

IDE RAID

Connector

IDE RAID 2 (Secondary)

Secondary

Slave (4th)

Secondary

Master (3rd)

Pin 1

Pin 1

Secondary

Slave (4th)

Secondary

Master (3rd)

IDE2 (Secondary)

FDD Connector

Slave (2nd)

Master (1st)

Pin 1

IDE1 (Primary)

Primary

Primary

IDE Connector

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IDE1 is also known as the primary channel and IDE2 as the secondary channel. Each channel supports two IDE devices that
make a total of four devices. In order to work t ogether, t he two devices on each channel must be set diff erently to Master and
Slave mode. Either one can be the hard disk or the CDROM. The sett ing as master or s lave mode depends on the jum per on
your IDE device, so please refer to your hard disk and CDROM manual accordingly.

This motherboard supports ATA33
modes. The 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: Th e sp ec ific at io n of the I DE c abl e is a max imu m of 46c m (1 8 inc hes ) ;
make sure your cable does not exceed this length.

, ATA66 or ATA100 IDE devices. Following table lists the transfer rate of IDE PIO and DMA

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

1 i r

ir

.

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IIrrDDAA CCoonnnneeccttoor

The IrDA connect or can be configured to support wireless infrared module, with this module and application software such as
Laplink or Windows 95 Direct Cable Connection, the user can transfer files to or from laptops, notebooks, PDA devices and
printers. This connector supports HPS IR (115.2Kbps, 2 meters) and ASK-IR (56Kbps).

Install the infrared module ont o the IrDA connector and enable the infrared f unction from BIOS Setup, UA RT Mode, make sure
to have the correct orientation when you pl ug in the IrDA connector.

Pin 1

r

IrDA Connec tor

NC

+5V

IR_TX

KEY
GND
IR_RX

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DDXX3344RR--UU OOnnlliinnee MMaannuuaall

WWOOMM ((ZZeerroo VVoollttaaggee WWaakkee oonn MMooddeemm)) CCoonnnneeccttoorr

This motherboard implements special circuit to support Wake On Modem, both Internal modem card and external box modem
are supported. Since Internal modem card consumes no power when system power is off, it is recommended t o use an internal
modem. To use internal modem, connect 4-pin cable from RING connector of modem card to the WOM connector on the
motherboard.

Pin 1

1

+5VSB
NC
RI­GND

WOM Connector

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WWOOMM bbyy EExxtteerrnnaall BBOOXX MMooddeem

Traditional Green PC suspend mode does not really turn off the system power supply, it uses external box m odem to trigger MB
COM port and resume back to active.

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

m

Serial Port

(Modem Side)

Pin 1

Serial Port

(Motherboard Side)

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WWOOMM bbyy IInntteerrnnaall MMooddeemm CCaarrd

With the help of the ATX soft power On/Off, it is possible to have a system totally power off, and wakeup to automatically answer
a phone call as an answering machine or to s end/receive a fax. You may identify whether or not your system is in true power off
mode by checking to see if the fan of your power supply is off. Both an external box modem and an internal modem c ard can be
used to support Modem Wake Up, but if you use an external modem, you have to leave your box modem on.

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

WOM Connector

(Motherboard Side)

d

WOM Connector

(Modem Card Side)

42

(

)

DDXX3344RR--UU OOnnlliinnee MMaannuuaall

WWOOLL ((WWaakkee oonn LLAANN))

This feature is very similar as Wake On Modem, but it goes through loc al area network. To us e Wake On LAN function, you must
have a network card with chipset that s upports this feature, and connect a cable from LAN card to m otherboard WOL connector.
The system identification information (probably IP address) is stored on network card and because there is a lot of traffic on the
Ethernet, you need to install network m anagement software, such as ADM, for the checking of how to wake up the system. Note
that, at least 600mA ATX s tandby current is required to support the LAN card for this function.

WKUP2

WKUP3

WKUP4

LID

GND

+5VSB

WKUP2

RI

GND

+5VSB

WKUP3

(High Active)

RI

GND

+5VSB

WKUP4

Low Active

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WOL Connector

(Motherboard Side)

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

WOL Connector

(Ethernet Card Side)

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AAGGPP ((AAcccceelleerraatteedd GGrraapphhiicc PPoorrtt)) EExxppaannssiioonn SSlloott

The DX34R-U provides an AGP 4x slot. The AGP 4x is a bus int erface targeted for high-performance 3D graphic. AGP supports
only memory read/write operation and s ingle-master single-slave one-to-one only. AGP uses both rising and falling edge of the
66MHz clock, for 2X AGP, the data transfer rat e is 66MHz x 4bytes x 2 = 528MB/s. AGP is now moving t o AGP 4x m ode, 66MHz
x 4bytes x 4 = 1056MB/s.

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SSuuppppoorrtt 1100//110000 MMbbppss LLAANN oonnbbooaarrd

VIA Apollo Pro 133T includes a fast Ethernet controller on chip. On the strength of LSI 80225 PHY on board, which is a
highly-integrated Platform LAN Connect device, it provides 10/100M bps Ethernet for office and home use, the Ethernet RJ45
connector is located on top of USB connectors. The green LED indicates the link mode, it lights when linking to network and
blinking when transferring data. The orange LED indicates the transfer mode, it lights when transferring data in 100Mbps mode.

d

Green/ACT

Orange/Speed

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CCNNRR ((CCoommmmuunniiccaattiioonn aanndd NNeettwwoorrkk RRiisseerr)) EExxppaannssiioonn SSlloott

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

audio, and phone-line based networking. Owing to CPU c om puting power getting stronger, the digital processing job can be
implemented in main chipset and share CPU power. The analogy conversion (CODEC
circuit design, which is put on CNR card. This motherboard implements sound CODEC on board (can be dis abled by JP12), but
reserve CN R slot fo r t he opt i on of mod em f unc ti on. Not e t hat you c an sti ll use P CI m odem ca rd.

) circuit requires a different and separate

47

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DDXX3344RR--UU OOnnlliinnee MMaannuuaall

PPCC9999 CCoolloorr CCooddeedd BBaacckk PPaanneell

The onboard I/O devices are PS/ 2 Keyboard, PS/2 Mouse, COM1 (DX34R-U supports one serial port only. If you need more
serial ports, please considering using PCI seri al port add-on c ard), Printer, Four USB
angle of drawing shown here is from the back panel of the housing.

PS/2 Mouse

Connector

RJ45 LAN

Connector

SPP/EPP/ECP

Parallel Port

, AC97 sound and gam e ports. The vi ew

Game Port

PS/2 Keyboard: For standard keyboard, whic h is using a PS/2 plug.
PS/2 Mou s e: Fo r PC- Mou se, wh ic h is us i ng a P S/2 p l ug.
USB Por t : Available for connecting USB devices.
Parallel Port: To connect with SPP/ECP/ EPP printer.
COM1 Port: To c onnect with pointing devices, modem or others serial devices.
Speaker Out: To External Speak er, 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 MI DI devices.

Ke

PS/2

board

USB Port

COM 1 Port

MIC-In
Line-In
Speaker Out

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d

nnd

SSuuppppoorrtt 2

This motherboard provides 4 USB connectors to connect USB devices, such as mouse, keyboard, modem, printer, etc. There
are two connectors on the PC99 bac k panel. You can use proper cable to connect other USB connectors t o the back panel or
front panel of chassis.

2

UUSSBB PPoorrtt

+5V

SBD2-

SBD2+

GND

KEY

UUSSBB22 CCoonnnneeccttoorr

Pin 1

+5V
SBD3­SBD3+
GND
NC

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CChhaassssiiss IInnttrruussiioonn CCoonnnneeccttoorr

The “CASE OPEN” header provides chassis intrusion-monitoring function. This function logged the event in the system BIOS
when chassis is opened. You can use the 2-pin chassis intrusion sensor to connect with this header, and enable the chassis
monitoring function of system BIOS.

Pin 1

1

Sensor
GND

Chassis I nt rus i on

Sensor Connector

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JJPP1122 EEnnaabbllee//DDiissaabbllee OOnnbbooaarrdd SSoouunndd

This motherboard has AC97 sound onboard. JP12 is used to enable or disable onboard AD1885 CODEC chip. If you don’t want
to enable the Onboard Audio, you should set this jumper to 2-3, and disable the “OnChip Sound” from BIOS setting > Advanced
Chipset Features, before you install your pref erred PCI Sound Card.

Pin 1

JP12 Onboard Audio jumper

11

Enable

(Default)

Disable

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CCDD AAuuddiioo CCoonnnneeccttoorr

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

R
GND
GND

L

CD-IN

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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 s ome internal
modem cards implement this connector.

MIC Out

GND
GND

Mono In

MODEM-CN

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AAUUXX--IINN CCoonnnneeccttoorr

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

AAUUXX--IINN CCoonnnneeccttoorr

L RGND GND

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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 remove the jumper cap from the F ront Audio Connector if you want to connect cable
to it. Do not remove this yellow jumper c ap if there’s no audio port on the front panel.

Pin 1

1 2

FP_MIC

FP_VREF

PHONE_R

NC

PHONE_L

Note: Please remove the jumper cap from t he Front Panel Audio Connector
before you connect the cable. Do not remove this yellow jumper cap if

GND
+5V
JS1
KEY
NC

9 10

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DDrr.. LLEEDD CCoonnnneeccttoorr

In conjunction with Dr. LED (Upgrade Optional), which can easily show what k ind of problem may oc cur on your system during
assembly. It can clearly indicate whether there is a component issue or an installation i ssue by the 8 LEDs on the front panel of
Dr. LED. T his helps you quickly self-diagnostic your system status.

Pin 1

1 2

3.3V
NC

GND

5 6

GPO12
GPO14

GPO14-

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Dr. LED is a CD disc storage box with 8 LEDs on its front panel, the size of Dr. LED is exactly the same as 5.25 in floppy drive,
so that it can be mount into normal 5.25 in drive bay of any housing.

The total 8 LEDs light up alternatively if the system fails in one of eight stages. Once the LED7 (latest LED) is l it, this indicates
that the system has completed its boot-up procedure.
The 8 LEDs indicate the following messages when lit:

LED 0 - Indicates that the CPU may have been ins talled incorrectly or is damaged.
LED 1 - Indicates that the memory may have been installed incorrectly or is damaged.
LED 2 - Indicates that the AGP may have been installed incorrectly or is damaged.
LED 3 - Indicates that the PCI card m ay have been installed incorrectly or is damaged.
LED 4 - Indicates that the floppy disk drive may have been i nstalled incorrectly or is damaged.
LED 5 - Indicates that the HDD may have been installed incorrectly or is damaged.
LED 6 - Indicates that the keyboard may have been installed incorrectly or is damaged.
LED 7 - Indi ca tes th at t he sy st em is OK.

7 6 5 4 3 2 1 0

Boot O.K. KB HDD Audio CPU Video MemoryPCI

Note: During POST (Power On Self Test) procedure, the
Debug LED will light on sequentially from LED0 to LED7 until
the system boot O.K

57

A

DDXX3344RR--UU OOnnlliinnee MMaannuuaall

Auto Swi tch

RTC

CMOS

Battery ATX Stand-by Power

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

Backup by EEPROM

BBaatttteerryy--lleessss aanndd LLoonngg LLiiffee DDeessiiggnn

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

Flash

ROM

(Real Time Clock)

00:00:00

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OOvveerr--ccuurrrreenntt PPrrootteeccttiioonn

The Over Current Protection was very popular implemented on ATX 3.3V/5V/12V switching power supply. However, 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, HDD, add-on cards installed on this
motherboard may be damaged because of component failure, human operating error or unknown
nature reason. AOpen cannot guaranty th e protection circuit will always work perfectly.

ATX

Switching

Power

Supply

12V (Protected by power supply)

3.3V (Protected by power sup ply)

5V (Protected by power supply)

Onboard

Power

Regulator

Over-Current

Protection

Circuit

CPU Core Voltage

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DDXX3344RR--UU OOnnlliinnee MMaannuuaall

HHaarrddwwaarree MMoonniittoorriinngg

This motherboard implements a hardware m onit oring 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 go wrong, there will be
an alarm through the chassis external speaker or buzzer of motherboard (if existed) to warn the user.

Fan

CPU

Power

Fan Speed

AOpen H/W

Monitoring

Utility

CPU Temperature

CPU Voltage

System Vol tage

Detection

Circuit

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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 m otherboard), user still cannot replace it and the m otherboard 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

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0

μμμμ

ffff

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, this motherboard implements 2200μF capacitors, which is m uch larger than normal capacitors (1000 and 1500μf)
and it provides better stability for CPU power.

μμμμ

ffff

LLooww EESSRR CCaappaacciittoorr

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The power circuit of the CPU core voltage must be checked to ensure system stability for high speed CPUs (such as the new
Pentium III, or when overclocking). A t ypical CPU core voltage is 2.0V, so a good design should control voltage between 1.860V
and 2.140V. That is, the transient must be below 280mV. Below is a timing diagram captured by a Digital Storage Scope, it
shows the voltage transient is only 143m v even when maximum 18A current is applied.

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

63

DDXX3344RR--UU 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 important factor to make sure
chipset and CPU working in stable condition. The
layout of this motherboard implements AOpen’s
unique design called “ Frequency Isolation Wall”.
Separating each critical portion of motherboard into
regions where each region operates in a same or
similar frequency range to avoid cross talk and
frequency interference between each region’s
operations and condition. The trace length and route
must be calculated carefully. For example, the clock
trace must be equal length (not necessarily as short
as possible) so that clock skew will be controlled
within few a pico second (1/10

12

Sec)

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PPuurree AAlluummiinnuumm HHeeaattssiinnkk

Cool down CPU and Chipset is important for system reliability. Aluminum heat sink provides better heat consumption especially
when you are trying to overclocking.

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DDrriivveerr aanndd UUttiilliittyy

There are motherboard drivers and utilities included in AOpen Bonus CD disc. 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 (such as Windows

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

Note: Please follow recommended procedure
to install Windows 95

and Windows 98.

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AAuuttoo--rruunn MMeennuu ffrroomm BBoonnuuss CCDD DDiisscc

You can use the auto-run menu of Bonus CD disc. Choose the utility and driver and s elect model name.

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IInnssttaalllliinngg VVIIAA 44 iinn 11 DDrriivveerr

You can i nstall the VIA 4 in 1 driver (IDE Bus master (For W indows NT use), VIA ATAP I Vendor Support Driver, VIA AGP, IRQ
Routing Driver (For Windows 98 use), VIA Registry (INF) Driver) from the Bonus Pack CD disc Autorun menu.

Warning: I f you w ant to uninstal l the VIA AGP Vxd driver, please remove
the AGP c ard driver first. Otherwise, the screen may go black at rebooting
after th e u n- i ns ta l l ation.

Note: Installing this Bus Master
IDE driver may cause Suspend
to Hard Drive failure.

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IInnssttaalllliinngg OOnnbbooaarrdd SSoouunndd DDrriivveerr

This motherboard comes with an AD1885 AC97 CODEC. You can find the audio driver from the Bonus Pack CD disc auto-run
menu.

69

x

t

p

r

DDXX3344RR--UU OOnnlliinnee MMaannuuaall

IInnssttaalllliinngg LLAANN DDrriivveerr

The South Bridge in VIA Apollo 133T chipset integrates a t otal communication solution including 10/100Mb Fast Ethernet for
Office requirement. You can install LAN Driver under Windows 95/98/ME, WindowsNT4 & W indows2000 by following steps.

Manually Adding an Adapter in Windows 95 / 98 / ME / NT4 / 2000.
=====================================
LOCATION OF DRIVER: \Driver\LAN\RTL8100\Windows\
(Depend on various Windows version in your system.)

1. From the Control Panel, double-click the “Add Hardware” icon.

2. Double-click Other Devices or Network Adapters in t he list area.

3. Double-click a PCI Ethernet Control ler.

4. Click the Driver tab, then click Update Driver.

5. Click Next at the Update Device Driver Wizard.

6. Select "Display a list of all the drivers..." and click Next.

7. Insert the AOpen Bonus CD and cl ick Have Disk.

8. Enter the appropriate drive for your disk media
(for example: D:\) ,and click OK.

9. Click OK at the Select Device dialog box.

10. The Update W izard displays the message that it has found
the driver. Click Next .

11. Click Finish and restart your computer when prompted.

Note: If the New Hardware Found dialog bo
does not appear at startup and you canno
connect to the network, check the Device
Manager list to see if the new adapter is

resent. If it is not, please install the LAN drive

manually.

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IInnssttaallll OOnnbbooaarrdd IIDDEE RRAAIIDD DDrriivveerr

The onboard PROMISE® FastTrak 100 Lite chipset provi des DOS, Widows 3.1/95/98/98 SE/ME/NT/2000 driver for install.
Please refer to the “ATA/100 IDE RAID Manual” for get m ore detail information.

IInnssttaallll FFaassttCChheecckk™™ MMoonniittoorriinngg UUttiilliittyy

You can monitor the operating status of disk array and drives configured on the IDE RAID channel using the supplies
FastCheck™ monitoring utility for Windows-based operating system. FastCheck™ generates visual and audible messages
alerting you of possible problems with the disk array or controller. Please refer to the “ATA/100 IDE RAID Manual” for get more
detail information.

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AACCPPII SSuussppeenndd ttoo HHaarrdd DDrriivvee

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

memory and screen image) into hard disk, and then the system can be totally power off . Next time, when power is on, you can
resume your original work directly from hard disk within few s econds 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

Save into

Restore within
seconds

Disk

Hard
Disk

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System Requirement

1. AOZVHDD.EXE 1.30b or later.

2. Delete config.sys and autoexec.bat.

Fresh installation of Window s 98 on a new system

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

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

a. Set Power Schemes > Syst em 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 B uttons". Note that this option will only be seen after step

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

3. Clean boot into DOS and run AOZVHDD utility.

a. If you ass ign the wh ole disk to your W in 98 system (FAT 16 or FAT 32), please ru n "aozvhdd /c /file". Please remember

sufficient free space has to be res erved in t he disk, e.g. if you have 64 MB DRAM and 16 MB VGA card installed, the
system needs at least 80 MB free space. The utility will locate the space automatically.

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

provid e unf orm at te d an emp t y part it io n.

4. Reboot sys tem .

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

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

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Changing from APM to ACPI (Windows 98 only)

1. Run "Regedit.exe"

a. Go through the following path

HKEY_LOCAL_MACHINE

SOFTWARE

MICROSOFT

WINDOW S

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 B I O S " and
remove "Plug and Pla y BIOS")

3. Reboot sys tem .

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

Changing from ACPI to APM

1. Run "Regedit.exe"
a. Go through the following path

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HKEY_LOCAL_MACHINE

SOFTWARE

MICROSOFT

WINDOW S

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 Pla y

BIOS" and remove "ACPI BIOS")

3. Reboot sys tem .

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

5. Click "OK ".

Tip: "02" means Windows 98 is ACPI ack nowl edged
but the ACPI function is disabled.

Tip: Currently we found only ATI 3D Rage Pro AGP c ard would support

CPI suspend to disk. Please refer to AOpen w eb site for latest update.

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AACCPPII SSuussppeenndd ttoo RRAAMM ((SSTTRR))

This motherboard supports ACPI Suspend to RAM function. With this function, you can resume your original work directly f rom
DRAM without going through the Windows 98 boot ing 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

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

System Requirement

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

2. The V IA 4 in 1 Driver must have been installed properly.

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 butt on to wake up the system.

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AAWWAARRDD BBIIOOSS

System parameters can be modified by going i nto BIOS Setup m enu, this menu all ows yo u to conf igure t he syst em param eters
and save the configuration into the 128 bytes CMOS area, (normally in the RTC chip or in t he mai n chipset).

The AwardBIOS™ that installed in the Flash RO M
BIOS provides critical low-level support for standard devices such as hard disk drives, serial and parallel ports.

Most BIOS setting of DX34R-U motherboard had optimized by AOpen’s R&D engineering team. B ut, the default setting of BIOS
still can’t fine-tune the chipset controlling entire system. Hence, the rest of this chapter is intended to guide you through t he
process of c onf i guri ng y ou r sy st em us in g set up .

To enter to BIOS setup m enu

, press <Del> when POST (Power-On S elf Test) sc reen is shown on your monitor.

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

Note: Because the BIOS code is the most often
changed part of the motherboard design, the BIOS
information contained in this manual may be
different with actual BIOS that come with your
motherboard.

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AAbboouutt BBIIOOSS FFuunnccttiioonn DDeessccrriippttiioonn……

AOpen always dedicates to give users a more friendly computer system. Now, we inc lude all function descriptions of BIOS setup
program into the BIOS Flash ROM. W hen 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 m anual while you changing the BIOS setting.

Menu Items Select Window Item Function Desc ription Window

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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 use the
<Page Up> and <Page Down> key to change setting value. You also can press <F1> key for help and press <Esc > key to quit
Award™ BIOS setup program. The following table provides details about how to use keyboard in the Award™ BIOS setup
program. By the way, all products of AOpen also provides a special function in the BIOS setup, 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 c hange.

2. In sub menu: Exit current menu t o main m enu.
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 m enu or item help description.
F3 Changing menu language.
F5 Load previous setting value from CMOS.

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Key Description

F6 Load fail-save setting value from CMOS.
F7 Load turbo s etting value from CMOS.
F10 Save changed setting and exit setup program.

Note: A Open always dedicates to giv e users a more
friendly 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 t he B IOS
setting.

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HHooww TToo EEnntteerr BBIIOOSS SSeettuupp

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

POST (Power-On Self Test). Choose "Load 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.

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BBIIOOSS UUppggrraaddee

By flashing your motherboard, you agree to accept the possibility of BIOS flash failure. If you motherboard is working and is
stable, and there are no major bugs that were f ixed by a latter BIOS revision, we recommend that you DO NOT try to upgrade
your BIOS.

By doing so, you are taking a risk of BIOS fl ash failure. If you indeed intent on upgrading, PLEASE BE SURE to us e the right
BIOS revision for the right motherboard model.

AOpen Easy Flash is a li ttle different than traditional flash method. The BIOS
and you simply run a single commend to complete the flash process.

binary file and flash routine are linked together

Caution: AOpen Easy Flash BIOS programs are designed to be
compatible with the Award BIOS. At the date of this note, AOpen
Easy Flash BIOS programs are not available for AMI BIOS. AMI
BIOS appears mostly only on old 486 boards and some early
Pentium boards. Please be sure to view the README compressed
inside the BIOS package before upgrading, and follow upgrade
instructions carefully. This will minimize the chance of flash
failures.

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Below are the steps for easy flashing procedures: (applies for Award BI OS ONLY)

1. Download new BIOS upgrade zip
For example, DX34RU2U102.ZIP.

2. Run shareware PKUNZIP (http://www.pkware.com/
binary BI OS f il e an d th e fl ash uti li ty.
Or Winzip (http://www.winzip.com/

3. Save the unzipped file into a bootable floppy disk.
For example, DX34RU2U102.BIN & DX34RU102.EXE

4. Reboot the system to DOS mode without loading any memory handler (such as EMM386) or devic e driver. It needs
around 520K free memory spaces.

5. Execute A:> DX34RU102 and the program will do the rest of it.

DO NOT turn off the power during FLASH PROCESS until you are asked to!!

6. Reboot system and press <Del> to enter BIOS setup

Warning: The new BIOS upgrade will permanently replace your
original BIOS's settings and PnP information when flashing. You
may need to reconfigure your BIOS setting and re-install
Win95/Win98 as well as your add-on cards, so that your system
can go back to work as normal.

file from AOpen's web site.

) which supports miscellaneous operation systems to extract the

) in Windows environment.

, Choose "Load Setup Defaults", then “Save & Exit Setup”. Done!

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OOvveerrcclloocckkiinngg

As a leading manufacturer in motherboard industry, AOpen always listens to what customers want and develop products to fit
different user's requirements. Reliability, compatibility, leading technology and friendly features are our basic goals when
designing motherboards. Other than above m entioned design criteria, there are power users who are always s eeking to pus h
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 133MHz CPU bus clock. But it comes with clock generator of

200MHz when we design it to accommodate f uture CPU bus clock. Our lab test results shown that 166MHz is achieva ble whe n
proper setting and qualified components were presented, we feel quite comfortable overclocking to 166MHz. Not only that, this
motherboard has full-range (CPU core voltage) settings and an option to adjust CPU core voltage. The CPU cl ock ratio can be
up to 8x that supports almost all of Pentium III/Celeron CPUs in the future and provides flexibility for overclockers. For your
reference, the following configurations are what we feel comfortable at 166MHz bus clock.

But not guaranty.

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

☺☺☺☺

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

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VVGGAA CCaarrdd && HHaarrdd DDiisskk

VGA and HDD is key components for overclocking, for your reference, the following list are what have been successful
overclocked in our lab. Please note that AOpen can not guaranty they can be successful overclocked again. P lease check t he
Available Vendor Lis t (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

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GGlloossssaarryy

AACC9977

Basically, AC97 specific ation 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
to operating system (such as Windows 98). This is a bit similar as the PnP
power switch to control the power state transition.

AAGGPP ((AAcccceelleerraatteedd GGrraapphhiicc PPoorrtt))

AGP is a bus interface targeted for high-performance 3D graphic. AGP supports only memory read/write operation and
single-master single-slave one-to-one only. AGP uses both rising and falling edge of the 66MHz clock, for 2X AGP, the data
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 (VI A 694x), started from Oct 1999.

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

register interface. ACPI defines ATX momentary soft

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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 dis c bundled with AOpen motherboard product; there are motherboard drivers, Acrobat Reader for PDF online manual and
other us ef ul ut il iti es .

AAPPMM ((AAddvvaanncceedd PPoowweerr MMaannaaggeemmeenntt))

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

AATTAA ((AATT AAttttaacchhmmeenntt))

ATA is the specification of diskette interface. In 80’s, many software and hardware manufacturers instituted the ATA specification
together. The AT is meaning International Business Machines Corporation (IBM) personal computer/AT’s bus structure.

AATTAA//6666

ATA/66 uses both rising edge and falling edge but doubl es UDMA/33 transfer rate. The data transfer rate is 4 t imes of the PIO
mode 4 or DMA mode 2, 16.6MB/s x4 = 66MB/s. To use ATA/66, you need special ATA/66 I DE cable.

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AATTAA//110000

ATA/100 is a new IDE specification under developing. ATA/100 uses both rising edge and falling edge as ATA/66 but clock cycle
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 cab l e, t h e s ame 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 I nput/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 t he activities of the IDE access including waiting
for the mechanical events. To reduce the workload of the CPU, the bus master IDE device transfers data from/to memory
without interrupting CPU, and releases CP U 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 m aster IDE mode.

CCNNRR ((CCoommmmuunniiccaattiioonn aanndd NNeettwwoorrkkiinngg RRiisseerr))

The CNR specification provides the PC industry the opportunity to deliver a flexible and cost reduced method of implementing
LAN, home networking, DSL, USB, wireless, audio and modem subsystems widely used in t oday's "connected PCs". The CNR
specification is an open industry specification and is supported by OEMs, IHV card manufacturers, silicon supplier and
Microsoft.

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CCOODDEECC ((CCooddiinngg aanndd DDeeccooddiinngg))

Normally, CODEC means a circuit that can do digital to analog conversion and also the analog to 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
applications, DDR low cost and low voltage will ultimately make it an ideal solution for all segments of the PC market, high
performance desktop and mobile PCs, Value PCs and even Internet Appliances and m obile devices.

DDIIMMMM ((DDuuaall IInn LLiinnee MMeemmoorryy MMoodduullee))

DIMM socket has total 168-pin and supports 64-bit data. It can be single or double s ide, the golden finger signals on each side
of PCB are different, and that is why it was called Dual In Line. Almost all DIMMs are made by SDRAM
Note that some old DIMMs are made by FPM/EDO

DDMMAA ((DDiirreecctt MMeemmoorryy AAcccceessss))

Channel for communications between the memory and surrounding devices.

, which operate at 3.3V.

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

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EECCCC ((EErrrroorr CChheecckkiinngg aanndd CCoorrrreeccttiioonn))

The ECC mode needs 8 ECC bits for 64-bit data. Each time memory is access ed; ECC bits are updated and c hecked by a
special algorithm. The ECC algorithm has t he abilit y to detect 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, EDO DRAM holds the memory data valid until the next memory access cycle, that is
similar to pipeline effect and reduces one c lock 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 ult ra-violet (UV) light. If BIOS has t o be
upgraded, you need to remove EPROM from motherboard, clear by UV light, re-program, and then insert back.

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EEVV66 BBuuss

EV6 Bus in the technology of Alpha processor from Digital Equipment Corporation. EV6 bus uses both ris ing and falling clock
edge to transfer data, similar as DDR SDRAM or ATA/66 IDE bus.
EV6 Bus Speed = CP U external bus clock x 2.
For example, 200 MHz EV6 bus is ac tually using 100 MHz external bus clock, but the equivalent speed is 200 MHz.

FFCCCC DDooCC ((DDeeccllaarraattiioonn ooff CCoonnffoorrmmiittyy))

The DoC is component certification standard of FCC EMI regulations. This standard allows DIY component (such as
motherboard) to apply DoC label separately without a s hielding 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 socket, but require
motherboard to add some signals on socket 370. That is, the motherboard needs to be redesigned. Intel 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 t o
be infected by virus. Because of increase of new functions, BIOS s ize is increased from 64KB to 256KB (2M bit). AOpen AX5T is
the first board to implement 256KB (2Mbit) Flas h 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.

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FFSSBB ((FFrroonntt SSiiddee BBuuss)) CClloocckk

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

2

2

I

I

CC BBuuss

See SMBus.

IIEEEEEE 11339944

IEEE 1394 is a low-cost digital interface originated by Apple Computer as a desktop 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 digital t elevision
devices together at 200 Mbps . Seri al Bus Management provides overall configuration control of the serial bus in the form of
optimizing arbitration timing, guarantee of adequate electrical power for all devices on the bus, assignment of isochronous
channel ID, and notification of errors. There are two type of IEEE 1394 data transfer: asynchronous and isochronous.
Asynchronous transport is the traditional computer memory-mapped, load and store interface. Data requests are sent to a
specific address and an acknowledgment is returned. In addition 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.

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PPaarriittyy BBiitt

The parity mode uses 1 parity bit fo r each byte, normally it is even parity m ode, that is, each time the memory data is updated,
parity bi t will be adjusted to have e ven count "1" for ea ch byte. When next time, if m emory is r ead with odd numbe r of "1", t he
parity error is occurred and this is called s ingle bit error detection.

PPBBSSRRAAMM ((PPiippeelliinneedd BBuurrsstt SSRRAAMM))

For Socket 7 CPU, one burst data read requires four QWord (Quad-word, 4x16 = 64 bits). PBSRAM only needs one address
decoding time and automatically sends the remaining QWords to CPU according to a predefined sequence. Normally, it is
3-1-1-1, total 6 clocks, which is faster than as ynchronous SRAM. PBSRAM is often used on L2 (l evel 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.

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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 bandwi dth up to 200x64/8=1600MB/s, and 266x64/8=2100MB/s. Hence, the PC-1600
DDR DRAM is working with 100MHz and P C-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 comput er and expansion card.

PPDDFF FFoorrmmaatt

A file format for electronic doc ument, PDF format is independent from platform , you can read PDF f ile under Windows, Unix,
Linux, Mac … with different PDF reader. You c an also read PDF f ile by web browser such as I E and Netscape, not e that you
need to 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 automatic ally allocate the IRQ/DMA /Memory. Currently, almost all the PCI c ards and most ISA cards are
already PnP compliant.

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PPOOSSTT ((PPoowweerr--OOnn SSeellff TTeesstt))

The BIOS self-test procedure after power-on, sometimes, it is t he first or the second screen shown on your monitor during
system boot.

RRDDRRAAMM ((RRaammbbuuss DDRRAAMM))

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

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

SDRAM

channel, and this channel may have maximum 32 RDRAM devices, no m atter how many RI M M

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
168-pin DIMM

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

sockets.

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

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2

2

SShhaaddooww E

A m emory space in Flash-ROM to sim ulate E2PROM operation, AOpen motherboard uses Shadow E2PROM for jumper-less and
battery-less design

E

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 identical. That is why i t
was called Single In Line. SIMM is made by FPM or EDO
current motherboard design.

SSMMBBuuss ((SSyysstteemm MMaannaaggeemmeenntt BBuuss))

SMBus is also called I2C bus. It is a two-wire bus devel oped for component communication (es pecially 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 sl aves to send/receive message.

SSPPDD ((SSeerriiaall PPrreesseennccee DDeetteecctt))

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

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

to decide best timing for this DIMM or RIMM.

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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 access memory (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)
developed as a proposed industry standard by the Quantum c orporation, 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. Ultra DMA uses Cyclic al Redundancy Checking (CRC), off ering a new level of data prot ection. Ultra DMA
uses the s am e 40 -pi n ID E int e rfac e c abl e as PIO and D MA.

16.6MB/s x2 = 33MB/s

16.6MB/s x4 = 66MB/s

16.6MB/s x6 = 100MB/s

UUSSBB ((UUnniivveerrssaall SSeerriiaall BBuuss))

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

interface. Ultra DMA was

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VVCCMM ((VViirrttuuaall CChhaannnneell MMeemmoorryy))

NEC’s Virtual Channel Memory (VCM) is a new DRA M core architecture that dramatically improves the memory system’s ability
to service multimedia requirements. VCM increases memory bus efficiency and performance of any DRAM technology by
providing a set of fast static registers between t he mem ory core and I /O pins. Using V CM 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.

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TTrroouubblleesshhoooottiinngg

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

Start

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

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

rinter.

Make sure if all jumper settings are correct.

Clear CMOS

Next

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