AOpen MX4B User Manual

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MX4B

DOC. NO.: MX4B-OL-E0112B

Overview

Installation

Hardware

Drivers &

Utilities

BIOS Setup

AWARD

Glossary

Troubleshooting &

Technical Support

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WWhhaatt’’ss iinn tthhiiss mmaannuuaall

MX4B .................................................................................................................................................. 1

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

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

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

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

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

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

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

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

Hard war e Ins tal lat ion..................................................................................................................... 17

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

JP14 Clear CMOS Data .................................................................................................................................................1 9

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

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

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

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

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

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

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

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

IrDA Connector ..............................................................................................................................................................33

AGP (Accelerated Graphic Port) Expansion Slot ...........................................................................................................34

Support 10/100 Mbps LAN onboard (Optional)..............................................................................................................35

CNR (Communication and Network Riser) Expansi on Slot ............................................................................................36

PC99 Color Coded Back Panel......................................................................................................................................37

Support 2

CD Audio Connector......................................................................................................................................................39

Modem Audio Connector ...............................................................................................................................................40

Front Audio Connector...................................................................................................................................................41

Battery-less and Long Life Design.................................................................................................................................42

Over-current Protection .................................................................................................................................................43

Hardware Monitoring .....................................................................................................................................................44

Resettable Fuse ............................................................................................................................................................45

2200µF Low ESR Capacitor...........................................................................................................................................46

Layout (Frequency Isolation Wall) .................................................................................................................................4 8

Pure Aluminum Heatsink ...............................................................................................................................................49

USB Port.....................................................................................................................................................38

Driver and Utility............................................................................................................................. 50

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Auto-run Menu from Bonus CD Disc..............................................................................................................................51

Installing Intel® Chipset Software Installat ion Utili ty...................................................................................................... 5 2

Installing Intel IAA Driver ...............................................................................................................................................53

Installing LAN Driver (Optional) .....................................................................................................................................54

Installing Onboard Sound Driver....................................................................................................................................55

ACPI Suspend to Hard Drive......................................................................................................................................... 56

ACPI Suspend to RAM (STR)........................................................................................................................................61

AWARD BIOS ................................................................................................................................... 63

About BIOS Function Description…...............................................................................................................................64

How To Use Award™ BIOS Setup Program...................................................................................................................6 5

How To Enter BIOS Setup .............................................................................................................................................67

BIOS Upgrade ...............................................................................................................................................................68

Overclocking ................................................................................................................................... 7 0

VGA Card & Hard Disk ..................................................................................................................................................71

Glossary .......................................................................................................................................... 72

AC97 .............................................................................................................................................................................72

ACPI (Advanced Configuratio n & Power Interfac e) ........................................................................................................72

AGP (Accelerated Graphic Port)....................................................................................................................................72

AMR (Audio/Modem Riser)............................................................................................................................................73

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AOpen Bonus Pack CD .................................................................................................................................................73

APM (Advanced Power Management) ...........................................................................................................................73

ATA (AT Attachment)......................................................................................................................................................73

ATA/66...........................................................................................................................................................................73

ATA/100......................................................................................................................................................................... 74

BIOS (Basic Input/Output Sys tem) ................................................................................................................................74

Bus Master IDE (DMA mode).........................................................................................................................................74

CNR (Communication and Networki ng Riser)................................................................................................................7 4

CODEC (Coding and Decoding) ....................................................................................................................................75

DDR (Double Data Rated) SDRAM................................................................................................................................75

DIMM (Dual In Line Memory Module) ............................................................................................................................75

DMA (Direct Memory Access) ........................................................................................................................................ 75

ECC (Error Checking and Correction)............................................................................................................................76

EDO (Extended Data Output) Memory...........................................................................................................................76

EEPROM (Electronic Erasable Programmab le ROM)....................................................................................................76

EPROM (Erasable Programmabl e ROM).......................................................................................................................76

EV6 Bus ........................................................................................................................................................................77

FCC DoC (Declaration of Conformity)............................................................................................................................ 77

FC-PGA (Flip Chip-Pin Grid Array) ................................................................................................................................77

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Flash ROM ....................................................................................................................................................................77

FSB (Front Side Bus) Clock ...........................................................................................................................................7 8

C Bus ..........................................................................................................................................................................78

IEEE 1394 .....................................................................................................................................................................78

Parity Bit........................................................................................................................................................................78

PBSRAM (Pipelined Burst S RAM) .................................................................................................................................79

PC-100 DIMM ................................................................................................................................................................ 79

PC-133 DIMM ................................................................................................................................................................ 79

PC-1600 or PC-2100 DDR DRAM .................................................................................................................................79

PCI (Peripheral Component Interface) Bus....................................................................................................................7 9

PDF Format...................................................................................................................................................................80

PnP (Plug and Play) ......................................................................................................................................................80

POST (Power-On Self Test) ...........................................................................................................................................8 0

RDRAM (Rambus DRAM).............................................................................................................................................. 80

RIMM (Rambus Inline Memory Module)......................................................................................................................... 81

SDRAM (Synchronous DRAM) ......................................................................................................................................81

Shadow E

SIMM (Single In Li ne M emory Mod ule).......................................................................................................................... 81

SMBus (System Management Bus) ...............................................................................................................................82

PROM ..........................................................................................................................................................81

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SPD (Serial Presence Detect ) .......................................................................................................................................82

Ultra DMA ...................................................................................................................................................................... 82

USB (Universal Serial B us) ............................................................................................................................................ 8 3

VCM (Virtual Channel Memory)..................................................................................................................................... 83

ZIP file...........................................................................................................................................................................83

Troubleshooting.............................................................................................................................. 84

Technical Support ........................................................................................................................... 88

Product Registration....................................................................................................................... 91

How to Conta ct Us.......................................................................................................................... 92

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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

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

or you can get free download

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OOvveerrvviieeww

Thank you for choosing AOpen MX4B motherboard. The MX4B is Intel® Socket 478 motherboard (M/B) based on the Micro ATX form factor featuring the Intel support Intel it has one AGP slot and supports AGP 4X mode and pipelined spilt-transaction long burst transfer up to 1056MB/sec. According to different customer’s requirements, 64, 128, 256, 512MB and 1GB DDR SDRAM DIMM modules can be applied to the m otherboard and the maximum memory size can be up to 2 GB. The onboard IDE controller supports Ultra DMA transfer rate up to 100MB/s. Further flexibility can be achieved by taking advantage of the Communication and Network Riser (CNR) card option that allows audio, modem, and/or LAN configuration on a single baseboard design. More than that, on the strength of Intel 82562ET PHY on board, which is an highly-integrated Platform LAN Connect device, it provides 10/100M bps Et hernet for office and home use (Optional). Besides, the MX4B has a RealTek ALC201

AC97

CODEC chipset onboard providing high performance and magic surround stereo sound to let people enjoy working wi th it. Now, let’s enjoy all features from A Open MX4B motherboard.

Socket 478 Pentium® 4 (Willamette / Northwood) and 400 MHz Front Side Bus (FSB) clock. In the AGP performance,

845 (Brookdale) chipset. As high performance chipset built in the M/B, the MX4B motherboard can

33/66/100 mode and the

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CPU

Supports Intel® Socket 478 Pentium® 4 (Willamette / Northwood) 1.4GHz~2.4GHz+ with 400MHz Front Side Bus (FSB) designed for Socket 478 technology.

Chipset

With the Intel® 845 (Brookdale) chipset, Intel delivers a discrete graphics solution with all the performance, innovative features and proven reliability of the Intel graphics solution for Intel (ICH2) features two USB controllers supporting four USB ports. W ith support for 5.1 channels of AC’97 audio and the ability to make the most of soft audio/modem technology, the 845 chipset delivers an ideal solution for innovative new form factors.

845 chipset. With its highly scalable design, the new 845 chipset offers an ideal, leading-edge AGP

Pentium® 4 processor platforms. And the smart integration in the Intel 845 chipset's I/O Controller Hub

Expansion Slots

Including three 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) Accelerated Graphics Port (AGP)

cards support data transfer rate up to 1056MB/s. MX4B motherboard includes one AGP expansion slot for a bus mastering AGP graphic card. For AD and SBA signaling, MX4B motherboard can support 4X mode. Of three PCI slots provided, all of them are master PCI slots with arbitration and decoding for all integrated functions and LPC bus.

specification provides a new level of video display sophistication and speed. The AGP video

slot provided from MX4B can support CNR interface for a Modem/Audio card. The

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Memory

Provides two 184-pin DDR SDRAM DIMM sockets that support up to 2GB of PC-200/266 compliant DDR SDRAM ( Double Date Rate, Synchronous Dynamic Random Access Memory). You may install 64, 128, 256, 512mb and 1GB DDR SDRAM DIMM modules into each socket.

LAN Port (Optional)

On the strength of Intel 82562ET 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 B us Master IDE DMA Mode 5, and supports Enhanced IDE devices.

On-board AC’97 Sound

MX4B uses the RealTek ALC201 AC97 sound chip. This on-board audio includes a complete audio recording and playback system.

Four USB Connectors

Provides two ports, four USB connectors for USB interface devices, s uch as mouse, keyboard, m odem, scanner, etc.

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Power Management/Plug and Play

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 the system much user-friendlier.

, which helps save users from configuration problems, thus making

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 im pleme nt the ACPI standard for Windows® 98/ME/2000 series compatibility, and supports Soft-Off, STR (Suspend to RAM, S3), STD (Suspend to Disk, S4) features.

Super Multi-I/O

Provides two high-speed UART compatible serial ports and one parallel port with EPP and ECP capabilities. UART can also be directed from COM1 to the Infrared Module for the wireless connections.

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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. Inst all in g Op er ati ng S yst em (suc h as W indo ws 9 8)

11. Installing Driver and Utility

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Intel 82562ET PHY Onboard

Red: MODEM-CN Connector

Black: CD-IN Connector

2Mbit Programmable Flash ROM

RealTek ALC201 AC’97 CODEC

IrDA Connector

Front Audio Connecto

CNR Expansion Slot

2nd USB Connector

JP14 CMOS Clear Jumper

FAN3 Connecto

Front Panel Connector

System LED

FDD Connecto

Motherboard Map

PC99 Colored Back Panel

Resettable Fuse

32-bit PCI Expansion Slot x3 FAN2 Connector

2200μF Low ESR Capacitors

GP 4x Expansion Slot

4-pin 12V. ATX Power Connector

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

1.4~2.4 GH z+ CP U Intel® 845 chipset with MCH, ICH2

that supports LAN, Ultra ATA/100, SDRAM Solution

184-pin DDR DIMM Socket x2 supports PC-200/266 DDR SDRAM maximum up to 2 GB

CPU Fan Connector with H/W Monitoring Function

TX Power Connector TA/33/66/100

IDE Connector x2

Pentium® 4

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BBlloocckk DDiiaaggrraamm

Socket 478

Intel

Pentium 4

CPU

AGP 4X Slot

400MHz System

PC-200/266 DDR

SDRAM Up to 2GB

DIMM Socket x2

Bus

Intel 82845

(Brookdale)

LAN connect Component

Floppy Disk Drive x2

MCH

USB

Connector x4

PCI Bus

Intel

82562ET

PHY

1stUSB Port

2ndUSB Port

32-bit PCI Slot x3

ATA

33/66100

Primary Channel

Secondary

Channel

Intel

82801BA

ICH2

Low Pin

Count Super

I/O

RealTek ALC201

AC Link

Firmware Hub

2Mbit Flash EEPROM

Paralle l Port

Serial Port x2

IDE Drive x4

CNR Slot

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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””……

When 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 am azing 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 information.

for more detail

(

)

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JJPP1144 CClleeaarr CCMMOOSS DDaattaa

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

1. Turn off the s ystem and unplug the AC power.

2. Remove ATX power cable from connector PW R2.

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

4. Return JP14 to its normal setting by shorting pin 1 & pin 2.

5. Connect ATX power cable back to connector PWR2.

Normal

default

Pin 1

Clear

CMOS

Tip: W hen should I Clear CMOS?

1. Boot fa il bec aus e of ov e rcl ock in g…

2. Forget password…

3. Troubleshooting…

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CCPPUU IInnssttaallllaattiioonn

This motherboard supports Intel® Pentium 4 Socket 478 series CPU (Willamette / Northwood). Be careful of CPU orientation when you plug it into CPU socket.

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

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

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

CPU socket

Lever

CPU pin 1 and

cut edge

CPU cut edge

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

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

CPU cut edge

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

damage the CPU.

Note: This socket supports Micro-FC-PGA2 package CPU, which is the latest CPU package developed by Intel. Other forms of CPU package are impossible to be fitted in.

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CCPPUU FFaann IInnssttaallllaattiioonn

This motherboard comes with a retention module attached on the CPU socket when shipped, we strongly recommend you to install AOpen special designed CPU Fan as shown below on the retention module for better heat dissipation. Please install the CPU Fan correctly as the following pictures shown.

1. Gently put the CPU Fan down on the retention module with clips aligning correctly to the four corners.

2. Pressing down the four clips with force one by one on the retention module.

Clip

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

CPU VID signal

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

Intel® Socket 478

Pentium 4 CPU

Power Regulator

(A utomatically generates CPU voltage)

CPU voltage

Clock

Generator

CPU Freq. Ratio

BIOS

Controlled

Circuit

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This motherboard supports CPU VID function. The CPU core voltage will be automatically detected.

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BIOS Setup > Frequency/Voltage Control > CPU Clock Setting

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

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

AGP Clock = PCI Clock x 2

CPU Ratio

CPU FSB (By 1MHz stepping)

8x, 9x, 10x… 21x, 22x, 23x, 24x

100-150MHz.

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CPU

Pentium 4

1.4G Pentium 4

1.5G Pentium 4

1.6G Pentium 4

1.7G Pentium 4

1.8G Pentium 4

1.9G Pentium 4

2.0G Pentium 4

2.2G Pentium 4

2.4G

CPU Core Frequenc

1400MHz 100MHz 400MHz 14x

1500MHz 100MHz 400MHz 15x

1600MHz 100MHz 400MHz 16x

1700MHz 100MHz 400MHz 17x

1800MHz 100MHz 400MHz 18x

1900MHz 100MHz 400MHz 19x

2000MHz 100MHz 400MHz 20x

2200MHz 100MHz 400MHz 22x

2400MHz 100MHz 400MHz 24x

FSB Clock

System Bus

Ratio

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

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

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

FAN2 Connector

CPU Fan Connector

GND +12V SENSOR

FAN3 Connector

SENSOR

+12V

GND

Note: Some CPU fans do not have

sensor pin, so that cannot support hardware monitoring function.

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DDIIMMMM SSoocckkeettss

This motherboard has two 184-pin DIMM s ockets that allow you to install PC200 or PC266 memory up to 2 GB.

DIMM1 DIMM2

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HHooww ttoo IInnssttaallll MMeemmoorryy MMoodduulleess

Please follow the procedure as shown below t o finish memory installation.

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

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

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

Tab

40 pins 52 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.

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FFrroonntt PPaanneell CCoonnnneeccttoorr

Pin1

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

Locate the power switch cable from your ATX housing. It is 2-pin female 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 (S2) or Suspend to RA M (S3) Flashing for every second Suspend to Disk (S4) The LED will be turned off

GND

Keylock

+5V IDE LED IDE LED

+5V

GND

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

IDE LED

Speaker

SPWR

CPI & PWR

LED

Reset

SPEAKER

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AATTXX PPoowweerr CCoonnnneeccttoorr

This motherboard comes with a 20-pin ATX power connector and an ext ra 4-pin connector as shown below. Make sure you plug in the right direction. We strongly recommend you to insert the 4-pin connector before connecting the 20-pin connector.

Pin1

Ground Ground 12V 12V

COM

COM +3.3V +3.3V

+5V

+5V COM PW-OK 5VSB +12V

AACC PPoowweerr AAuuttoo RReeccoovveerryy

+3.3V

-12V

COM

PS-ON

COM

+5V +5V

-5V COM COM

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

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Connect 34-pin floppy cable and 40-pin IDE cable to floppy connector FDC and IDE connector. The blue connector is IDE1 for clear identification. Be careful of the pin1 orientation. Wrong orientation may cause system damage.

Pin 1

FDD Connector

Secondary Slave (4th)

Pin 1

Primary

Slave (2nd)

ATA 33/66/100 IDE Connector

Secondary

Master (3rd)

IDE 2 (Secondary)

IDE 1 (Primary)

Primary Master

(1st)

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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 together, the two devices on each channel must be set differently t o Master and Slave mode. Either one can be the hard disk or the CDROM. The setting as master or slave mode depends on the jumper on your IDE device, so please refer to your hard disk and CDROM m anual 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

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IIrrDDAA CCoonnnneeccttoorr

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

Install the infrared module onto the IrDA connector and enable the infrared function from BIOS Setup, UART Mode, make sure to have the correct orientation when you plug in the IrDA connector.

Pin 1

IIrrDDAA CCoonnnneeccttoorr

+5V

IR_T

KEY GND IR_RX

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AAGGPP ((AAcccceelleerraatteedd GGrraapphhiicc PPoorrtt)) EExxppaannssiioonn SSlloott

The MX4B provides an AGP 4x slot. The AGP 4x is a bus interface targeted for high-performance 3D graphic. AGP supports only memory read/write operation and single-master single-slave one-to-one only. AGP uses both rising and falling edge of the 66MHz clock, for 2X AGP, the data transfer rate is 66MHz x 4bytes x 2 = 528MB/s. AGP is now moving to AGP 4x mode, 66MHz x 4bytes x 4 = 1056MB/s.

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SSuuppppoorrtt 1100//110000 MMbbppss LLAANN oonnbbooaarrdd ((OOppttiioonnaall))

Intel 845 (Brookdale) chipset includes a fast Ethernet controller on chip. On the strength of Intel 82562ET PHY on board, which is a highly-integrated Platform LAN Connect device, it provides 10/100M bps Ethernet for office and home us e, 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.

Green/ACT

Orange/Speed

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CCNNRR ((CCoommmmuunniiccaattiioonn aanndd NNeettwwoorrkk RRiisseerr)) EExxppaannssiioonn SSlloott

CNR is a riser ca rd speci ficat ion to rep lace th e AMR (Audio/Modem Riser) that supports V.90 analog modem, multi-channel audio,

and phone-line based networking. Owing to CPU computing power getting stronger, the digital processing job can be implemented in main chipset and share CPU power. The analogy conversion (CODEC which is put on CNR card. This motherboard implements sound CODEC on board, but reserve CNR slot for the option of modem functio n . N ot e t hat you can s t i ll us e P CI m o d em c a rd.

) circuit requires a different and separate circuit design,

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PPCC9999 CCoolloorr CCooddeedd BBaacckk PPaanneell

The onboard I/O devices are PS/2 Keyboard, PS/2 Mouse, RJ-45 LAN Connector (Optional), COM1 and COM2, Printer, four USB, AC97 sound and game ports. The view angle of drawing shown here is from the back panel of the housing.

PS/2 Mouse

Connector

RJ-45 LAN Connector

(Optional)

SPP/EPP/ECP

Parallel Port

MIDI/Game Port

PS/2 Keyboard

PS/2 Keyboard: For standard keyboard, which is using a PS/2 plug. PS/2 Mous e: For PC-Mo us e, whic h is us in g a PS/ 2 pl ug. USB Port: Available for connecting USB devices. Parallel Port: To connect with SPP/E CP/ EPP pri nte r. COM1/COM2 Port: To connect with pointing devices, modem or others serial devic es. RJ45 LAN Connector: To connect to LAN, Network. VGA Connector: To connect with P C monitor. Speaker Out: To External Speaker, Earphone or Amplifier. Line-In: Comes from the signal sources, such as CD/Tape player. MIC-In: From Microphone. MIDI/Game Port: For 15-pin PC joystick, game pad or MIDI devices.

Connector

USB

Connectors

COM 1 Port

COM 2 Port

MIC-In Line-In Speaker Out

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nnd

SSuuppppoorrtt 2

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

UUSSBB PPoorrtt

Pin 1

USB2 Connector

USBPWR0

USB_FP_P0-

USB_FP_P0+

GND

KEY

1 2

USBPW R0 USB_FP_P1-

USB_FP_P1+ GND USB_FP_OC0

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CCDD AAuuddiioo CCoonnnneeccttoorr

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

CD-IN

R GND GND L

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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 some internal modem cards implement this connector.

MODEM-CN

Mono In GND GND Mic Out

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

Pin 1

JS/AUD RET-R

UD VCC

AUD_GND

UD MIC

UD MIC BIAS

UD FPOUT R

KEY

UD RET L UD FPOUT L

Note: Pl ease remove the jumper cap from the Front Panel Audio Connector before you connect the cable. Do not remove this yellow jumper cap if housin

without an audio port on the front panel.

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Auto Swi t ch

RTC

CMOS

Battery ATX Stand-by Power

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

Backup by EEPROM

BBaatttteerryy--lleessss aanndd LLoonngg LLiiffee DDeessiiggnn

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

Flash

ROM

(Real Time Clock)

00:00:00

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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 t hat 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 unk nown nature reason. AOpen cannot guaranty the protection circuit will always work perfectly.

ATX

Switching

Power

Supply

12V (Protected by power supply)

3.3V (Pr ot ec ted by pow er sup pl y)

5V (Protected by power supply)

Onboard

Power

Regulator

Over-Current

Protection

Circuit

CPU Core Voltage

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Fan

CPU

Fan Speed

AOpen H/W

Monitoring

Utility

CPU Temperature

CPU Voltage

System Voltage

Detection

Circuit

HHaarrddwwaarree MMoonniittoorriinngg

This motherboard implements a hardware monitoring system. As you turn on your system, this smart design will continue to monitor your system’s working voltage, fan status and CPU temperature. If any of these systems’ status goes wrong, there will be an alarm through the chassis external speaker or buzzer of m otherboard (if existed) to warn the user.

Power

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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 motherboard), user still cannot replace it and the motherboard is still malfunctioning.

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

Resettable

Fuse

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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, MX4B implements 2200μF capacitors, which is much larger than normal capacitor (1000 & 1500μf) and it provides better stability for CPU power.

μμμμ

FF LLooww EESSRR CCaappaacciittoorr

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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 typical CPU core voltage is 2.0V, s o 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 143mv even when m aximum 18A current is applied.

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

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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

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 over clocking the CPU.

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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 utilities. 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 select model name.

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IInnssttaalllliinngg IInntteell®® CChhiippsseett SSooffttwwaarree IInnssttaallllaattiioonn UUttiilliittyy

Windows 95/98 cannot recognize this chipset, because it was released before the Intel 845 chipset. You can install the Intel INF Update Utility from the Bonus Pack CD disc auto-run menu to eliminate the “?” marks.

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IInnssttaalllliinngg IInntteell IIAAAA DDrriivveerr

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

CD disc.

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IInnssttaalllliinngg LLAANN DDrriivveerr ((OOppttiioonnaall))

The South Bridge in Intel 845 (Brookdale) integrates a total communication solution including 10/100Mb Fast Ethernet for Office requirement. You can install LAN Driver under Windows95/98, WindowsNT & Windows2000 by following steps.

Manually Adding an Adapter in Windows 95 / 98 =====================================

LOCATION OF DRIVER: \Intel\Driver\Lan\E100BNT5.SYS (NDIS 5.0) LOCATION OF SETUP FILE: \Intel\Driver\Lan\NET82557.INF

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

2. Double-click Other Devices or Network Adapt ers in the list area.

3. Double-click a PCI Ethernet Controller.

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 click 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 Wizard displays the message that it has found the driver. Click Next.

11. Click Finish and restart your computer when prom pted.

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IInnssttaalllliinngg OOnnbbooaarrdd SSoouunndd DDrriivveerr

This motherboard comes with a RealTek ALC201 AC97 CODEC. You can find the audio driver from the Bonus Pack CD disc auto-run menu.

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AACCPPII SSuussppeenndd ttoo HHaarrdd DDrriivvee

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

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

When go into Suspend:

When power-on next time:

System

Image &

Status

System

Image &

Status

Hard

Disk

Hard

Disk

Save into

Restore within seconds

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System Requirement

1. AOZVHDD.EXE 1.30b or later.

2. Delete config.sys and autoexec.bat.

Fresh installation of Windows 98 on a new system

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

2. After Windows 98's installation is complete, go to the Control Panel > Power Management. a. Set Power Schemes > System Standby to "Never". b. Click on "Hibernate" and select "Enable Hibernate Support" then "Apply". c. Click on the "Advanced" tab, you'll see "Hibernate" on "Power Buttons". Note that this option will only be s een 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 assign the whole disk to your Win 98 system (FAT 16 or FAT 32), please run "aozvhdd /c /file". Please remember

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

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

unform att ed an em pt y part i ti on.

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

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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 "ACPI BIOS" and remove "Plug and Pla y BIOS")

3. Reboot sys tem .

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

Changing from ACPI to APM

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

MMXX44BB OOnnlliinnee MMaannuuaall

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 Play 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 acknowledged but the ACPI function is disabled.

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

CPI suspend to disk. Please refer to AO pen web 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 from DRAM without going through the Windows 98 booting process and run your application again. Suspend to DRAM saves your current work in the system memory, it is faster than Suspend to Hard Drive but requires power supplied to DRAM, while Suspend to Hard Drive requires no power.

When go into Suspend:

When power-on next time:

System Image & Status

in the DRAM

System Image & Status

in the DRAM

Backup by 3.3V Power

Power back to

Other System

Devices

Other System

Devices

Power loss

Power back to w

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

System Requirement

1. An ACPI OS is required. Currently, Windows 98 is the only choice.

2. The Intel

Chipset Software Installation Utility must have been installed properly.

Procedures

1. Changed the f ollowing BIOS settings.

BIOS Setup > Power Management Setup > ACPI Function: Enabled

BIOS Setup > Power Management Setup > A CPI Suspend Type: S3.

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

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

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AAWWAARRDD BBIIOOSS

System parameters can be modified by goi ng into BIOS Setup menu, t his m enu al lows you t o conf ig ure th e syst em pa rame ters and save the configuration into the 128 bytes CMOS area, (normally in the RTC chip or in the main chi pset).

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

Most BIOS setting of MX4B had optimized by AOpen’s R&D engineering team. But, 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 the process of configuring your sys t em us i n g s e t u p.

To enter to BIOS setup menu

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

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

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

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AAbboouutt BBIIOOSS FFuunnccttiioonn DDeessccrriippttiioonn……

AOpen always dedicates to give 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 the BIOS setting.

Menu Items Select Window Item Function Description 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, al l products of AOpen also provides a special function in the BIOS setup, you can press <F3> key selecting preferred menu language to display.

Key Description

Page Up or + Changing setting to next value or increase the value. Page Down or - Changing setting to previous value or decrease value. Enter Select the item. Esc 1. In main menu: Quit and don’t save any change.

2. In sub menu: Exit current menu to main menu. Up Arrow Highlight previous item. Down Arrow Highlight next item. Left Arrow Move the light bar to left side of menu. Right Arrow Move the light bar to right side of menu. F1 Get menu or item help description. F3 Changing menu language. F5 Load previous setting value from CMOS.

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Key Description

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

Note: A Open always dedicates to give 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 the BIOS setting.

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HHooww TToo EEnntteerr BBIIOOSS SSeettuupp

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

(Power-On Self Test). Choose "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 fixed 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 flash failure. If you indeed intent on upgrading, PLEASE BE SURE to use the right BIOS revision for the right motherboard model.

AOpen Easy Flash is a little different than traditional flash method. The BIOS you simpl y r un a sing le c omm en d t o comp let e the f la sh p roc ess .

binary file and flash routine are linked together and

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 BIOS ONLY)

1. Download new BIOS upgrade zip

2. Run shareware PKUNZIP (http://www.pkware.com/ BIOS file and the flash utility. Or Winzip (http://www.winzip.com/

3. Save the unzipped file into a bootable floppy disk. For example, MX4B102.BIN & MX4B102.EXE

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

5. Execute A:> MX4B102 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. For example, MX4B102.ZIP.

) which supports miscellaneous operation systems to extract the binary

) 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 mentioned des ign criteria, there are power users who are always seeking to push the limitation of the system performance by overclocking which we call them "Overclocker".

This section is dedicated to overclockers. This high performance motherboard is designed for maximum 400MHz CPU bus clock. But it comes with clock generator of

248MHz when we design it to acc ommodate with future CPU bus clock. Our lab test results showed that 120MHz is achievable when proper setting and qualified components were presented. Not only that, the CPU clock ratio can be up to 24x that supports almost al l of Penti um appropriate for this motherboard is 120M Hz bus clock.

But not guaranty. ☺

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

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

☺

☺☺

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

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

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GGlloossssaarryy

AACC9977

Basically, AC97 specification separates sound/modem circuit to two parts, digital processor and a CODEC for analogy I/O they are linked by AC97 link bus. Since digital processor can be put 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 operating system (such as Windows 98). This is a bit similar as the PnP 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 (VIA 694x), started from Oct 1999.

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

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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 disc bundled with AOpen motherboard product; there are motherboard drivers, Acrobat Reader for PDF online manual and other useful u til it ies .

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 doubles UDMA/33 transfer rate. The data t ransfer rate is 4 times of the PIO mode 4 or DMA mode 2, 16.6MB/s x4 = 66MB/s. To use ATA/66, you need special ATA/66 IDE cable.

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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 cable, t he s am e as ATA /66 .

BBIIOOSS ((BBaassiicc IInnppuutt//OOuuttppuutt SSyysstteemm))

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

BBuuss MMaasstteerr IIDDEE ((DDMMAA mmooddee))

The traditional PIO (Programmable I/O) IDE requires the CPU to involve in all the activities of the IDE access including waiting for the mechanical events. To reduce the workload of the CPU, the bus master IDE device transfers data from/to memory without interrupting CPU, and releases CPU to operate concurrently while data is transferring between memory and IDE device. You need the bus master IDE driver and the bus master IDE HDD t o 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 today'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

sound/modem solution.

AC97

DDDDRR ((DDoouubbllee DDaattaa RRaatteedd)) SSDDRRAAMM

DDR SDRAM utilizes the existing DRAM infrastructure and technology while doubling the nominal bandwidth available to systems in an easy to design and simple to adopt way. Initially a perfect solution for memory intensive server and workstation applications, DDR low cost and low voltage will ultimately make it an ideal solution for all segments of the PC market, high performance desktop and mobile PCs, Value PCs and even Internet A ppliances and mobile devices.

DDIIMMMM ((DDuuaall IInn LLiinnee MMeemmoorryy MMoodduullee))

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

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 E CC bits for 64-bit data. E ach time memory is accessed; ECC bits are updated and checked by a special algorithm. The ECC algorithm has the ability to detect double-bit error and automatically correct single-bit error while pari ty 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-c harge activity, EDO DRAM holds the memory data valid until the next memory access cycle, that is similar to pipeline effect and reduces one clock state.

EEEEPPRROOMM ((EElleeccttrroonniicc EErraassaabbllee PPrrooggrraammmmaabbllee RROOMM))

Also known as E2PROM. Both EEPROM and Flash ROM can be re-programmed by electronic signals, but the int erface technology is different. Size of EEPROM is much smaller than flash ROM.

EEPPRROOMM ((EErraassaabbllee PPrrooggrraammmmaabbllee RROOMM))

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

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EEVV66 BBuuss

EV6 Bus in the technology of Alpha processor from Digital Equipment Corporat ion. EV6 bus uses both rising and falling clock edge to transfer data, similar as DDR SDRAM or ATA/66 IDE bus. EV6 Bus Speed = CPU external bus clock x 2. For example, 200 MHz EV6 bus is actually using 100 MHz external bus clock, but the equivalent speed is 200 MHz.

FFCCCC DDooCC ((DDeeccllaarraattiioonn ooff CCoonnffoorrmmiittyy))

The DoC is component certification standard of FCC EMI regulations. This standard allows DIY component (such as motherboard) to apply DoC label separately without a shielding of housing.

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

FC means Flip Chip, FC-PGA is a 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 fl ash utility, but it is also easier to be infected by virus. Because of increase of new functions, BIOS size is increased from 64KB to 256KB (2M bit). AOpen AX5T is the first board to implement 256KB (2Mbit) Flash ROM. Now flash ROM s ize is moving to 4M bit on AX6C (Intel 820) and MX3W (Intel

810) motherboard. , A Open 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

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 television devices together at 200 Mbps. Serial Bus Management provides overall configuration control of the serial bus in the form of optimizing arbitration timing, guarantee of adequate electrical power for all devices on the bus, assignment of isochronous channel ID, and notification of errors. There are two type of IEEE 1394 data transfer: asynchronous and isochronous. Asynchronous transport is the traditional computer memory-mapped, load and store interface. Data 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 j ust-in-time delivery eliminates the need for costly buffering.

PPaarriittyy BBiitt

The parity mode uses 1 parity bit for each byte, normally it is even parity mode, that is, each time the memory data is updated, parity bit will be adjusted to have even count "1" for each byte. When next time, if memo ry is rea d wit h odd n umb er of " 1", th e pari ty error is occurred and this is called single bit error detection.

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PPBBSSRRAAMM ((PPiippeelliinneedd BBuurrsstt SSRRAAMM))

For Socket 7 CPU, one burst data read requires four QWord (Quad-word, 4x16 = 64 bits). PBSRAM only needs one address decoding time and automatically sends the remaining QWords to CPU according to a predefined sequence. Normally, it is 3-1-1-1, total 6 clocks, which is faster than asynchronous SRAM. PBSRAM is oft en used on L2 (level 2) cache of Socket 7 CPU. Slot 1 and Socket 370 CPU do not need PBSRAM.

PPCC--110000 DDIIMMMM

SDRAM DIMM that supports 100MHz CPU FSB bus clock.

PPCC--113333 DDIIMMMM

SDRAM DIMM that supports 133MHz CPU FSB bus clock.

PPCC--11660000 oorr PPCC--22110000 DDDDRR DDRRAAMM

Based on FSB frequency, the DDR DRAM has 200MHz and 266MHz two type of working frequency. Because of DDR DRAM data bus is 64-bit, it provides data transfer bandwidth up to 200x64/8=1600MB/s, and 266x64/8=2100MB/s. Hence, the PC-1600 DDR DRAM is working with 100MHz and PC-2100 DDR DRA M is working with 133MHz FSB frequency.

PPCCII ((PPeerriipphheerraall CCoommppoonneenntt IInntteerrffaaccee)) BBuuss

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

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PPDDFF FFoorrmmaatt

A file format for electronic document, PDF format is independent from platform, you can read PDF file under Windows, Unix, Linux, Mac … with different PDF reader. You can al so read PDF file by web browser such as IE and Netscape, note that you need to install PDF plug-in first (Included in Acrobat Reader).

PPnnPP ((PPlluugg aanndd PPllaayy))

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

PPOOSSTT ((PPoowweerr--OOnn SSeellff TTeesstt))

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

RRDDRRAAMM ((RRaammbbuuss DDRRAAMM))

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

SDRAM

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

and this channel may have maximum 32 RDRAM devices, no matter how m any RI MM

sockets.

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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

DIMM

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

SShhaaddooww E

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

PPRROOMM

SSIIMMMM ((SSiinnggllee IInn LLiinnee MMeemmoorryy MMoodduullee))

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

to use burst mode transfer. SDRAM comes in 64-bit 168-pin

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

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SSMMBBuuss ((SSyysstteemm MMaannaaggeemmeenntt BBuuss))

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

SSPPDD ((SSeerriiaall PPrreesseennccee DDeetteecctt))

SPD is a sm all ROM or EEPRO M device resided on the DIMM or RIMM. SPD stores memory module information such as DRAM timing and chip parameters. SPD can be used by BIOS

UUllttrraa DDMMAA

Ultra DMA (or, more accurately, Ultra DMA/33) is a protocol for transferring data between a hard disk drive through the c omputer’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) industry standard by the Quantum corporation, makes of hard disk drives, and Intel, makes of chipset that support computer bus technology. Ultra DMA s upport 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 Cyclical Redundancy Checking (CRC), offering a new level of data protection. Ultra DMA uses the same 40-pin IDE interface cable as PIO and DMA.

16.6MB/s x2 = 33MB/s

16.6MB/s x4 = 66MB/s

16.6MB/s x6 = 100MB/s

to decide best timing for this DIMM or RIMM.

interface. Ultra DMA was developed as a proposed

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UUSSBB ((UUnniivveerrssaall SSeerriiaall BBuuss))

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

VVCCMM ((VViirrttuuaall CChhaannnneell MMeemmoorryy))

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

ZZIIPP ffiillee

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

) for windows environment.

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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

printer.

Make sure if all jumper settings are correct.

Clear CMOS

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Continue

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

Turn on the power

and check if the power

supply and CPU fan work

properly.

The problem is probably caused by

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

No Yes

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

them and then press <Del> to reboot the system.

Continue

Check if there is display?

Yes

Check if the system

reboots?

Yes

Perhaps your VGA card

or monitor is defective.

It is very possible that your

keyboard is defective.

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During system rebooting, press <Del> to enter BIOS

setup. Choose “Load Setup Default”.

Turn off the s ystem and re-connect IDE cable.

Re-install the operating system such as Windows 98.

Continue

Check if the system can

reboot successfully?

Yes

End

The problem should be

caused by the IDE cable or HDD itself.

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TTeecchhnniiccaall SSuuppppoorrtt

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

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

Thanks very much for your understanding! AOpen Technical Supporting Team

1111

2222

3333

4444

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

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

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

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

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

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

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

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

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5555

6666

7777

PPaarrtt NNuummbbeerr aanndd SSeerriiaall NNuummbbeerr

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

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

News Group: Your problem probably had been answered by our support engineer or professional users on t he news

group.

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

Contact Distributors/Resellers: We sell our products through resellers and integrators. They should know your system configuration very well and should be able to solve your problem more efficiently than us. After all, their attitude of service is an important reference for you if next time you want to buy something else from them.

Contact Us: Please prepare detail system configuration and error s ymptom before contacting us. The part numb er, serial number and BIOS ver si on are also very helpful.

Pr N

l N

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MMooddeell nnaammee aanndd BBIIOOSS vveerrssiioonn

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

MX4B is model name of motherboard; R1.20 is BIOS version.

MX4B R1.20 Feb.01.2001 AOpen Inc.

ward Plug and Play BIOS Extension v1.0A

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PPrroodduucctt RReeggiissttrraattiioonn

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

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

exchange.

• Be upgraded to gold membership of Club AOpen program.

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

products contain technical issues.

• Receive email notification about latest product's announcements.

• Be able to personalize your AOpen web pages.

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

• Have opportunities to pa rticipate special product promotional programs.

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

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

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

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

lease submit a separate form for each product.

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merica

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

Japan

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

HHooww ttoo CCoonnttaacctt UUss

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

Pacific Rim

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

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

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

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

Europe

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

Germany

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

AOpen MX4B User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

MX4B

Chipset

Expansion Slots

Memory

Ultra DMA 33/66/100 Bus Mater IDE

Four USB Connectors

Power Management/Plug and Play

Hardware Monitoring Management

Enhanced ACPI

Super Multi-I/O

Motherboard Map

System Requirement

Fresh installation of Windows 98 on a new system

Changing from APM to ACPI ( Windows 98 only)

Changing from ACPI to APM

System Requirement

Procedures