Drivers &
Utilities
AWARD
BIOS Setup
Glossary
DOC. NO.: AX3SP2U-OL-E0108A
Technical Support
Troubleshooting &
1
Hardware
Installation
AX3S Max/AX3S Plus II-U
Overview
Online Manual
AX3S Max/AX3S Plus II-U
AX3S Max/AX3S Plus II-U
Online Manual
W h a t ’s i n t h i s m a n u a l
AX3S Max/AX3S Plus II-U ...................................................................................................................1
What’s in this manual ......................................................................................................................................................2
You Must Notice ..............................................................................................................................................................9
Before You Start ............................................................................................................................................................10
Overview ....................................................................................................................................................................... 11
Feature Highlight ...........................................................................................................................................................12
Quick Installation Procedure..........................................................................................................................................17
Motherboard Map ..........................................................................................................................................................18
Block Diagram ...............................................................................................................................................................19
Hardware Installation ..................................................................................................................20
About “Optional” and “Upgrade Optional”… ...................................................................................................................21
JP14 Clear CMOS Data .................................................................................................................................................22
CPU Installation.............................................................................................................................................................23
JP23 FSB/PCI Clock Ratio ............................................................................................................................................25
CPU Jumper-less Design...............................................................................................................................................27
CPU and Housing Fan Connector (with H/W Monitoring)...............................................................................................34
DIMM Sockets ...............................................................................................................................................................35
Front Panel Connector ..................................................................................................................................................39
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ATX Power Connector ...................................................................................................................................................40
AC Power Auto Recovery ..............................................................................................................................................41
Keyboard/Mouse Wake-up.............................................................................................................................................41
IDE, Floppy, IDE RAID (AX3S Max Only) Connector .....................................................................................................42
JP35 Enable/Disable Onboard IDE RAID Controller (AX3S Max Only) ..........................................................................44
IrDA Connector ..............................................................................................................................................................45
WOM (Zero Voltage Wake on Modem) Connector .........................................................................................................46
WOL (Wake on LAN) .....................................................................................................................................................49
AGP (Accelerated Graphic Port) Expansion Slot ...........................................................................................................51
DVO Connector .............................................................................................................................................................52
CNR (Communication and Network Riser) Expansion Slot ............................................................................................53
PC99 Color Coded Back Panel......................................................................................................................................54
Support 8 USB Connectors............................................................................................................................................55
Chassis Intrusion Sensor...............................................................................................................................................56
COM2 Connector...........................................................................................................................................................57
CD Audio Connector ......................................................................................................................................................58
Modem Audio Connector ...............................................................................................................................................59
AUX-IN Connector .........................................................................................................................................................60
Front Audio Connector...................................................................................................................................................61
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Die-Hard BIOS (Optional) ..............................................................................................................................................62
GPO (General Purpose Output) Connector ...................................................................................................................65
Dr. LED Connector ........................................................................................................................................................66
Dr. Voice........................................................................................................................................................................68
Battery-less and Long Life Design .................................................................................................................................69
Over-current Protection .................................................................................................................................................70
Hardware Monitoring .....................................................................................................................................................71
Resettable Fuse ............................................................................................................................................................72
Power Bridge .................................................................................................................................................................73
2200μf Low ESR Capacitor ..........................................................................................................................................75
Layout (Frequency Isolation Wall) .................................................................................................................................77
Pure Aluminum Heatsink ...............................................................................................................................................78
Driver and Utility..........................................................................................................................79
Auto-run Menu from Bonus CD Disc ..............................................................................................................................80
Eliminate “?” mark from Windows 95/98 ........................................................................................................................81
Installing Onboard AGP Driver.......................................................................................................................................82
Installing Ultra ATA/100 IDE Driver ................................................................................................................................83
Installing Onboard Sound Driver....................................................................................................................................84
Install Onboard IDE RAID Driver (AX3S Max only) ........................................................................................................85
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Install FastCheck™ Monitoring Utility (AX3S Max only).................................................................................................85
ACPI Suspend to Hard Drive .........................................................................................................................................86
ACPI Suspend to RAM (STR) ........................................................................................................................................90
AWARD BIOS ................................................................................................................................92
About BIOS Function Description… ...............................................................................................................................93
How To Use Award™ BIOS Setup Program ...................................................................................................................94
How To Enter BIOS Setup .............................................................................................................................................96
BIOS Upgrade ...............................................................................................................................................................97
Overclocking ................................................................................................................................99
VGA Card & Hard Disk ................................................................................................................................................100
Glossary .....................................................................................................................................101
AC97 ...........................................................................................................................................................................101
ACPI (Advanced Configuration & Power Interface)......................................................................................................101
AGP (Accelerated Graphic Port) ..................................................................................................................................101
AMR (Audio/Modem Riser) ..........................................................................................................................................102
AOpen Bonus Pack CD ...............................................................................................................................................102
APM (Advanced Power Management) .........................................................................................................................102
ATA (AT Attachment)....................................................................................................................................................102
ATA/66 .........................................................................................................................................................................102
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ATA/100 .......................................................................................................................................................................103
BIOS (Basic Input/Output System) ..............................................................................................................................103
Bus Master IDE (DMA mode).......................................................................................................................................103
CNR (Communication and Networking Riser) ..............................................................................................................103
CODEC (Coding and Decoding) ..................................................................................................................................104
DDR (Double Data Rated) SDRAM..............................................................................................................................104
DIMM (Dual In Line Memory Module) ..........................................................................................................................104
DMA (Direct Memory Access) ......................................................................................................................................104
ECC (Error Checking and Correction)..........................................................................................................................105
EDO (Extended Data Output) Memory.........................................................................................................................105
EEPROM (Electronic Erasable Programmable ROM) ..................................................................................................105
EPROM (Erasable Programmable ROM) .....................................................................................................................105
EV6 Bus ......................................................................................................................................................................106
FCC DoC (Declaration of Conformity)..........................................................................................................................106
FC-PGA (Flip Chip-Pin Grid Array) ..............................................................................................................................106
Flash ROM ..................................................................................................................................................................106
FSB (Front Side Bus) Clock.........................................................................................................................................107
I2C Bus ........................................................................................................................................................................107
IEEE 1394 ...................................................................................................................................................................107
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Parity Bit......................................................................................................................................................................108
PBSRAM (Pipelined Burst SRAM) ...............................................................................................................................108
PC-100 DIMM ..............................................................................................................................................................108
PC-133 DIMM ..............................................................................................................................................................108
PC-1600 or PC-2100 DDR DRAM ...............................................................................................................................108
PCI (Peripheral Component Interface) Bus..................................................................................................................109
PDF Format .................................................................................................................................................................109
PnP (Plug and Play) ....................................................................................................................................................109
POST (Power-On Self Test) .........................................................................................................................................109
RDRAM (Rambus DRAM)............................................................................................................................................ 110
RIMM (Rambus Inline Memory Module)....................................................................................................................... 110
SDRAM (Synchronous DRAM) .................................................................................................................................... 110
Shadow E 2PROM ........................................................................................................................................................ 110
SIMM (Single In Line Memory Module) ........................................................................................................................ 111
SMBus (System Management Bus) ............................................................................................................................. 111
SPD (Serial Presence Detect) ..................................................................................................................................... 111
Ultra DMA .................................................................................................................................................................... 112
USB (Universal Serial Bus).......................................................................................................................................... 112
VCM (Virtual Channel Memory) ................................................................................................................................... 113
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ZIP file ......................................................................................................................................................................... 113
Troubleshooting .........................................................................................................................114
Technical Support......................................................................................................................118
Product Registration..................................................................................................................121
How to Contact Us.....................................................................................................................122
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You Must Notice
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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Before You Start
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 or you can
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.
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Ov er vi e w
Thank you for choosing AOpen AX3S Max/AX3S Plus II-U motherboard. The AX3S Max/AX3S Plus II-U is Intel® Socket 370
motherboard (M/B) based on the ATX form factor featuring the Intel ® 815E B-Step chipset. As high performance chipset built
in the M/B, the AX3S Max/AX3S Plus II-U motherboard can support Intel ® Socket 370 series Pentium ® III (Both Coppermine &
Tualatin are supported) & Celeron™ processor and 66/100/133MHz Front Side Bus (FSB) clock. In the AGP performance, it
has one AGP slot and 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 512MB. The on-board IDE controller supports Ultra DMA 33/66/100
mode and the transfer rate up to 100MB/s. AX3S Max/AX3S Plus II-U equipped with a Promise® FastTrak™ 100 Lite IDE
RAID controller (AX3S Max only) that provides high performance and fault tolerance, plus NEC USB 2.0 provides four
downstream USB ports for connectivity with any USB compliant device or hub.
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. Besides, the AX3S Max/AX3S Plus II-U motherboard has an
AD 1885 AC97 CODEC chipset onboard for provides high
performance and magic surround stereo sound to let people enjoy
working with it. Now, enjoy all features from AOpen AX3S
Max/AX3S Plus II-U motherboard.
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F e a t u r e Hi g h l i g h t
CPU
Supports Intel ® Socket 370 Pentium ® III (Both Coppermine & Tualatin are supported) & Celeron™ 533MHz~1.2GHz+
with
66/100/133MHz Front Side Bus (FSB) designed for Socket 370 technology. To avoid possible CPU damage caused by
overheating, an automatic shutdown of system had been especially designed on this motherboard. System would be
automatically power off when this motherboard with implementation of THERMTRIP circuit detected a CPU temperature above
135 degree for 4 seconds.
Chipset
With the Intel® 815E B-Step chipset, Intel delivers a discrete graphics solution with all the performance, innovative features and
proven reliability of the Intel® 815 chipset family. With its highly scalable design, the new 815E B-Step chipset offers an ideal,
leading-edge AGP graphics solution for Intel® Pentium ® III/Celeron™ processor platforms. And the smart integration in the Intel
815E B-Step chipset's I/O Controller Hub (ICH2) features two USB controllers supporting four USB ports. With support for 5.1
channels of AC97 audio and the ability to make the most of soft audio/modem technology, the 815E B-Step chipset delivers an
ideal solution for innovative new form factors.
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Expansion Slots
Including six 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) slot provided from AX3S Max/AX3S Plus II-U motherboard can support CNR
interface for a Modem/LAN/Audio card. The Accelerated Graphics Port (AGP) specification provides a new level of video display
sophistication and speed. The AGP video cards support data transfer rate up to 1056MB/s. As AX3S Max/AX3S Plus II-U
motherboard includes one AGP expansion slot for a bus mastering AGP graphic card, For AD and SBA signaling, AX3S
Max/AX3S Plus II-U motherboard can support 133MHz 2X/4X mode. Of six PCI slots provided, AX3S Max/AX3S Plus II-U
supports four master PCI slots for arbitration and decoding functions also and two slave PCI slots.
Memory
Provides four 168-pin SDRAM DIMM socket that support up to 512MB of PC-100/133 compliant SDRAM (Synchronous Dynamic
Random Access Memory). 32, 64, 128, 256 and 512MB SDRAM DIMM modules are supported.
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 (AX3S Max only)
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
AX3S Max/AX3S Plus II-U M/B uses the AD 1885 AC97 sound chip. This on-board audio includes a complete audio recording
and playback system.
Eight USB Connectors
Provides four ports, eight USB connectors for USB interface devices, such as mouse, keyboard, modem, scanner, etc. Built-in
NEC Host Controller provides four downstream USB ports for connectivity with any USB compliant device or hub. Each USB
port dedicated to providing full USB 2.0 bandwidth to the attached device.
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1MHz Stepping Frequency Adjustment
Provides “1MHz Stepping Frequency Adjustment” function in the BIOS. This magic function allows you adjust CPU FSB
frequency from 66~248 by 1MHz stepping, and lets your system can get maximum performance.
Watch Dog Timer
Includes AOpen “Watch Dog Timer” function that can auto-reset system in 4.8 seconds when you fail to system overclocking.
Die-Hard BIOS with external controller (Optional)
The Die-Hard BIOS technology is a very effective hardware protection method that doesn’t involve any software or BIOS coding.
Hence, it is 100% virus free.
Dr. LED
The Dr. LED has 8 LEDs on the AX3S Max/AX3S Plus II-U motherboard can easily shows what kind of problems you may
encounter.
Dr. Voice
The Dr. Voice provides 4 kinds of language version (English, Chinese, Japanese and German) that can easily to tell what kind of
problem you may encounter.
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Power Management/Plug and Play
The AX3S Max/AX3S Plus II-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, which helps
save users from configuration problems, thus making the system much more user-friendlier.
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 AX3S Max/AX3S Plus II-U provides two high-speed UART compatible serial ports and one parallel port with EPP and ECP
capabilities. UART can also be directed from COM2 to the Infrared Module for the wireless connections.
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Q ui c k I n s t a l l a t i o n P r o c e d ur e
This page gives you a quick procedure on how to install your system. Follow each step accordingly.
1.
Installing CPU and Fan
2.
Installing System Memory (DIMM
3.
Connecting Front Panel Cable
4.
Connecting IDE and Floppy Cable
5.
Connecting ATX Power Cable
6.
Connecting Back Panel Cable
7.
Power-on and Load BIOS Setup Default
8.
Setting CPU Frequency
9.
Reboot
10. Installing Operating System (such as Windows 98)
11. Installing Driver and Utility
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AX3S Max/AX3S Plus II-U
Red: MODEM-CN
Green: AUX-IN
Online Manual
Motherboard Map
Black: CD-IN
PC99 Colored Back
Panel
Front Audio Connector
Resettable Fuse
AC97 CODEC Chipset
Keyboard Wake-Up
Select Jumper
COM2 Port Connector
CNR Expansion Slot
AUX Fan Connector
(w/o H/W Monitoring)
2200μf Low ESR
Capacitors
ATX Power Connector
DVO Connectors
AGP 4X Expansion Slot
370-pin CPU Socket with
Frequency/Voltage Auto-detection
that supports Intel ® Pentium III
(Both Tualatin & Coppermine
are supported) & Celeron
533MHz~1.2GHz+
Intel ® 815E B-Step Chipset
with Pure Aluminum Heatsink
WOL (Wake On LAN)
Connector
32-bit PCI Expansion Slot x6
(PCI 5 & 6 support slave mode
PCI cards only)
WOM (Wake On Modem)
Connector
nd
2 USB Port Connector
JP35 IDE RAID Controller
Enable/Disable Jumper
(AX3S Max only)
3 rd & 4th USB Port Connector
CPU Fan Connector
with H/W Monitoring
PC-100/133 DIMM Slot
x4 supports maximum
up to 512MB
FDD Connector
ATA 33/66/100 IDE Connector x2
JP34 USB 3&4
Enable/Disable Jumper
GPO Connector
IrDA Connector
Dr. LED Connector
JP14 CMOS Clear Jumper
JP30 Die Hard BIOS
Select Jumper (Optional)
Dr. Voice Language Select
Jumper
JP23 FSB Select Jumper
Front Panel Connector
System Fan Connector
with H/W Monitoring
Die Hard BIOS with 100%
Virus Protection (Optional)
18
®
Promise FastTrak 100™ Lite IDE RAID Controller
(AX3S Max only)
Chassis Intrusion
Connector
ATA/100 IDE RAID Connector x2
(AX3S Max only)
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Online Manual
Bl o c k D i a g r a m
PC-100/133 SDRAM
Up to 512MB
Supports ATA100 IDE RAID 0
and RAID 1 Solution (AX3S
Max only)
32-bit PCI Slot x6
DIMM Socket x4
Promise
FastTrak
100 IDE
RAID
Controller
Socket 370 Intel
Pentium III/Celeron
66/100/133MHz
CPU (Both Tualatin &
System Bus
Coppermine are supported)
15-pin D-Sub
Connector
Intel 815E BStep
FW82815
GMCH
IDE Drive x4
Secondary
Channel
PCI Bus
ATA
33/66100
CRT
Monitor
LCD
Monitor
Primary
Channel
Primary
Channel
IDE Drive x4
Secondary
Channel
USB
Connector
x4
DVO Connector
AGP 4X Slot
Intel
FW82801BA
ICH2
1st USB Port
AC’97 Link
Audio CODEC
Modem CODEC
2nd USB Port
CNR Slot
USB Connector
x4
3rd USB Port
Low Pin
Count
Super
I/O
USB 2.0
Host
Controller
Firmware Hub
4Mbit Flash EEPROM
4th USB Port
Parallel Port
Serial Port x2
Floppy Disk Drive x2
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Har dwar e Ins tal l ati o n
This chapter describes jumpers, connectors and hardware devices of this motherboard.
Note: Electrostatic discharge (ESD) can damage your processor, disk drives, expansion boards, and
other components. Always observe the following precautions before you install a system component.
1.
Do not remove a component from its protective packaging until you are ready to install it.
2.
Wear a wrist ground strap and attach it to a metal part of the system unit before handling a
component. If a wrist strap is not available, maintain contact with the system unit throughout any
procedure requiring ESD protection.
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A b o u t “ O p t i o n a l ” a n d “ U p gr a d e O p t i o n a l ” …
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 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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J P1 4 C l ea r C M O S D a ta
You can clear CMOS to restore system default setting. To clear the CMOS, follow the procedure below.
1.
Turn off the system and unplug the AC power.
2.
Remove ATX power cable from connector PWR2.
3.
Locate JP14 and short pins 2-3 for a few seconds.
4.
Return JP14 to its normal setting by shorting pins 1 & pin2.
5.
Connect ATX power cable back to connector PWR2.
Pin 1
1
1
Tip: When should I Clear CMOS?
1. Boot fail because of overclocking…
Normal Operation
(default)
2. Forget password…
Clear CMOS
3. Troubleshooting…
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C P U I n s t al l a ti o n
This motherboard supports Intel ® Pentium III ® (Both Coppermine and Tualatin are supported) and Celeron™ Socket 370 series
CPU. Be careful of CPU orientation when you plug it into CPU socket.
2. Locate Pin 1 in the socket and look for a black dot or cut edge on the
CPU upper interface. Match Pin 1 and cut edge, then insert the CPU into
the socket.
1. Pull up the CPU socket level and
up to 90-degree angle.
CPU pin 1
and cut edge
CPU socket
Lever
CPU cut edge
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3. Press down the CPU socket level and finish
CPU installation.
CPU cut edge
Note: If you do not match the CPU
socket Pin 1 and CPU cut edge well, it
may 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 insert
former PPGA-package CPU onto it.
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J P 2 3 F S B/ P CI Cl o c k R a t i o
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. By the way, this motherboard also provides “1MHz Stepping Adjustment” feature
for overclockers. You can adjust CPU FSB frequency via BIOS setup program. Based on the CPU type, the adjustment range
has three level: 66~83 (FSB=66MHz, such as Celeron™ 533), 75~124 (FSB=100, such as Pentium ® III 800E), 100~248
(FSB=133, such as Pentium ® III 800EB) MHz for your choosing. If you fix the CPU FSB frequency by JP23, the “1MHz Stepping
Adjustment” range will be changed and following JP23 setting.
8
2
7
1
Auto
(Default)
25
FSB=133
FSB=100
FSB=66
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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
112MHz
38.3MHz
76.6MHz
PCI x3
4X
133MHz
33MHz
66MHz
PCI x3 or x4
4X, overclocking
155MHz
37.5MHz
75MHz
PCI x3 or x4
Warning:
Intel®
815E
B-Step
chipset
supports
maximum 133MHz FSB and 66MHz AGP clock, higher
clock setting may cause serious system damage.
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C P U J u m p er - l e s s D e si g n
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, therefore no jumpers or switches are used. The disadvantages of the Pentium based jumper-less
designs are eliminated. There will be no worry of wrong CPU voltage detection.
Clock
Generator
Intel ® Socket 370
Pentium III &
Celeron CPU
Controlled
CPU Freq. Ratio
CPU VID signal
BIOS
CPU voltage
Power Regulator
(Automatically generates CPU voltage)
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Circuit
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Online Manual
Full-range Adjustable CPU Core Voltage
This function is dedicated to overclockers, AOpen works together with Fairchild to develop a special chip FM3540 that supports
Adjustable CPU Core Voltage from 1.05V to 1.825 by 0.05 stepping. But this motherboard can also automatically detect CPU
VID signal and generates proper CPU 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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S e t t i n g C P U Fr e q u e n c y
This motherboard is CPU jumper-less design, you can set CPU frequency through the BIOS setup, and no jumpers or switches
are needed.
BIOS Setup > Frequency/Voltage Control > CPU Speed Setting
CPU Ratio
3x, 3.5x, 4x, 4.5x, 5x, 5.5x, 6x, 6.5x, 7x, 7.5x, 8x, 8.5x, 9x, 9.5x, 10x, 10.5x, 11x,
11.5x, and 12x
CPU FSB
66.6, 66.8, 68.3, 70, 75, 80, 83, 100, 100.2, 103, 105, 110, 115, 120, 124, 133.3,
133.6, 137, 140, 145, 150, 160, 166.5 and 200 MHz
(By BIOS Table)
CPU FSB
FSB = 66, 66~83MHz
(1 MHz Stepping
by manual
Adjustment)
FSB = 100, 75~124MHz
FSB = 133, 100~248MHz
Warning: Intel ® 815E B-Step chipset supports
maximum 133MHz FSB and 66MHz AGP clock,
higher clock setting may cause serious system
damage.
Tip: If your system hangs or fails to boot because
Home
of overclocking, simply use <Home> key to
restore the default setting (433MHz) or you can
wait the AOpen “Watch Dog Timer” reset the
system after five seconds and system will
auto-detect hardware again.
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S upport e d CP U Fre que nc y
Note: This motherboard support CPU
auto-detection function. Hence, you
don’t need to setup the CPU frequency
manually.
Core Frequency = CPU Bus Clock * CPU Ratio
PCI Clock = CPU Bus Clock / Clock Ratio
AGP Clock = PCI Clock x 2
CPU Core
Frequency
FSB Clock
Ratio
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
Celeron 766
766MHz
66MHz
11.5x
Celeron 800
800MHz
100MHz
8x
Celeron 850
850MHz
100MHz
8.5x
Celeron 900
900MHz
100MHz
9x
Celeron 1.2G
1.2GHz
100MHz
12x
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
CPU
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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
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
1GHz
133MHz
7.5x
1.13GHz
133MHz
8.5x
Pentium III 1G
Pentium III 1.13G
Warning: Intel® 815E B-Step chipset supports maximum 133MHz
Bus and 66MHz AGP clock, higher clock setting may cause serious
system damage.
Warning: To avoid possible CPU damage caused by overheating, an automatic
shutdown of system had been especially designed on this motherboard. System
would be automatically power off when this motherboard with implementation of
THERMTRIP circuit detected a CPU temperature above 135 degree for 4
seconds.
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AOpen “Watch Dog Timer”
With this motherboard, AOpen provides a very special, useful feature for overclockers. When you power-on the system, the
BIOS will check last system POST status. If it succeeded, the BIOS will enable “Watch Dog Timer” function immediately, and set
the CPU FSB frequency by user’s setting that stored in the BIOS. If system failed in BIOS POST, the “Watch Dog Timer” will
reset the system to reboot in five seconds. Then, BIOS will detect the CPU’s default frequency and POST again. With this
special feature, you can easily overclock your system to get higher system performance, and without removing the cover of
system housing to set the jumper to clear CMOS data when your system hanged.
Enable/Disable Signal
from BIOS
BIOS
Reset Signal
AOpen
Watch Dog
Timer
Clock Generator
Countdown about
5 seconds if fails
in POST
CPU
32
CPU ID Signal
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C P U a n d H o u s i n g F a n C o n n e c t o r ( w i t h H/ W M o ni t o r i n g )
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 or AUX
FAN (without H/W monitoring) connector.
FAN3 Connector
GND
+12V
SENSOR
CPU Fan Connector
GND
+12V
SENSOR
FAN2 Connector
34
Note: Some CPU fans do
not have sensor pin, so that
cannot support hardware
monitoring function.
AX3S Max/AX3S Plus II-U
Online Manual
DI M M S o c k e t s
This motherboard has four 168-pin DIMM sockets that allow you to install PC100 or PC133 memory up to 512MB. The AX3S
Max/AX3S Plus II-U motherboard supports Non-ECC/ECC and Registered SDRAM.
DIMM1
DIMM2
DIMM3
DIMM4
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DIMM can be single side or double side; it has 64 bit data and 2 or 4 clock signals. We strongly recommend choosing 4-clock
SDRAM for its reliability
SDRAM DIMM Module
ECC-Register DIMM Module
Note: Based on Intel 815E B-Step chipset specification, we
recommend you that using double-side SDRAM modules with 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.
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H o w t o I ns t a l l Me m o r y M o d u l e s
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.
20 pins
2.
60 pins
88 pins
Insert the module straight down to the DIMM slot with both hands and press down firmly until the DIMM module is securely
in place.
Note: The tabs of the DIMM slot
will close-up to hold the DIMM in
place when the DIMM touches
the slot’s bottom.
Tab
3.
Repeat step 2 to finish additional DIMM modules installation.
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Standby Power and Boot Indicate LED
Standby Power LED is used to indicate that the standby power is ready to use when it is lighting. And flickering Boot LED means
that the POST is in the process, and it will keep on lighting even after POST is done. They are both very useful indicators, which
is used to examine the status of your system.
Standby
power LED
Warning: Do not install or remove the
DIMM module when the RAM power LED
is lighting.
Boot LED
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Fr o n t P a n e l C o n n e c t o r
Attach the power LED, speaker, power and reset switch connectors to the
corresponding pins. If you enable “Suspend Mode” item in BIOS Setup, the ACPI
& Power LED will keep flashing while the system is in suspend mode.
Locate the power switch cable from your ATX housing. It is 2-pin female
connector from the housing front panel. Plug this connector to the soft-power
switch connector marked SPWR.
Suspend Type
ACPI LED
Power on Suspend (S1)
Flashing for every second
Suspend to RAM (S3) or Suspend to Disk (S4)
The LED will be turned off
1
1
SPWR
IDE LED
ACPI & PWR
LED
Speaker
Reset
39
NC
NC
+5V
IDE LED
IDE LED
+5V
+5V
GND
NC
SPEAKER
SPWR
GND
ACPILEDGND
ACPILED
NC
NC
GND
RESET
GND
AX3S Max/AX3S Plus II-U
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ATX Power Connector
The ATX power supply uses 20-pin connector shown below. Make sure you plug in the right direction.
COM
+5V
COM
+3.3V
+3.3V
+3.3V
-12V
COM
PS-ON
COM
40
+5V
COM
PW-OK
5VSB
+12V
+5V
+5V
-5V
COM
COM
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A C P o w er A u t o R ec o v er y
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.
Keyboard/Mouse Wake-up
This motherboard provides keyboard/mouse wake-up function. You can use the JP28 to enable or disable this function.
JP28
KB/Mouse Wake-up
Pin 1
Disable
(Default)
41
Enable
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IDE, Floppy, IDE RAID (AX3S Max Only) Connector
Connect 34-pin floppy cable and 40-pin, 80-wire IDE cable to floppy connector FDC and IDE / IDE RAID connector. Be careful of
the pin1 orientation. Wrong orientation may cause system damage.
FDD
Connector
Pin 1
Secondary
Slave (4th)
RAID IDE 2
Slave (4th)
Secondary
Master (3rd)
RAID IDE 2
Master (3rd)
IDE2 (Secondary)
IDE1 (Primary)
ATA 33/66/100
IDE Connector
Pin 1
RAID IDE 1
Slave (2nd)
Primary
Slave (2nd)
RAID IDE 1
Master (1st)
42
Primary
Master (1st)
AX3S Max/AX3S Plus II-U
Online Manual
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 to 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 manual accordingly.
This motherboard supports ATA33, ATA66 or ATA100 IDE devices. Following table lists the transfer rate of IDE PIO and DMA
modes. The IDE bus is 16-bit, which means every transfer is two bytes.
Mode
Clock Period
Clock
Count
Cycle Time
Data Transfer Rate
PIO mode 0
30ns
20
600ns
(1/600ns) x 2byte = 3.3MB/s
PIO mode 1
30ns
13
383ns
(1/383ns) x 2byte = 5.2MB/s
PIO mode 2
30ns
8
240ns
(1/240ns) x 2byte = 8.3MB/s
PIO mode 3
30ns
6
180ns
(1/180ns) x 2byte = 11.1MB/s
PIO mode 4
30ns
4
120ns
(1/120ns) x 2byte = 16.6MB/s
DMA mode 0
30ns
16
480ns
(1/480ns) x 2byte = 4.16MB/s
DMA mode 1
30ns
5
150ns
(1/150ns) x 2byte = 13.3MB/s
DMA mode 2
30ns
4
120ns
(1/120ns) x 2byte = 16.6MB/s
UDMA 33
30ns
4
120ns
(1/120ns) x 2byte x2 = 33MB/s
UDMA 66
30ns
2
60ns
(1/60ns) x 2byte x2 = 66MB/s
UDMA100
20ns
2
40ns
(1/40ns) x 2byte x2 = 100MB/s
Warning: The specification of the IDE cable is a maximum of 46cm (18 inches);
make sure your cable does not exceed this length.
43
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
66/100 is required.
AX3S Max/AX3S Plus II-U
Online Manual
J P 3 5 E n a bl e / D i s a bl e O n b o a r d I D E R AI D C o n t r o l l e r ( A X 3 S M a x O nl y )
The JP35 is used to enable or disable onboard PROMISE® FastTrak 100 Lite IDE RAID controller. If you want to disable this
controller, please turn off the system power first, and short pin 2 and pin 3 of JP35 by jumper.
Pin 1
1
Enable
1
Disable
(Default)
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I r DA C o n n e c t o r
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
IrDA Connector
NC
+5V
IR_TX
GND
IR_RX
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WOM (Zero Voltage Wake on Modem) Connector
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 to 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.
WOM Connector
+5VSB
NC
RIGND
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W O M b y E xt er n al B OX M o d em
Traditional Green PC suspend mode does not really turn off the system power supply, it uses external box modem to trigger MB
COM port and resume back to active.
Serial Port
(Modem Side)
Pin 1
Serial Port
(Motherboard Side)
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W O M b y I n t er n al M o d e m C ar d
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 send/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 card can be
used to support Modem Wake Up, but if you use an external modem, you have to leave your box modem on.
WOM Connector
(Modem Card Side)
WOM Connector
(Motherboard Side)
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WOL (Wake on LAN)
This feature is very similar as Wake On Modem, but it goes through local area network. To use Wake On LAN function, you must
have a network card with chipset that supports this feature, and connect a cable from LAN card to motherboard WOL connector.
The system identification information (probably IP address) is stored on network card and because there is a lot of traffic on the
Ethernet, you need to install network management software, such as ADM, for the checking of how to wake up the system. Note
that, at least 600mA ATX standby current is required to support the LAN card for this function.
LID
GND
+5VSB
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WOL Connector
(Ethernet Card Side)
WOL Connector
(Motherboard Side)
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A G P ( A c c e l e r a t e d G r a p hi c P o r t ) E x p a n s i o n S l ot
The AX3S Max/AX3S Plus II-U 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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D VO C o n n e ct o r
The AX3S Max/AX3S Plus II-U provides a DVO (Digital Video Output) connector which transferring the VGA signal to the AOpen
Digital Video/TV Riser Card. With this connector and riser card, you can connect the digital LCD panel with computer to get high
quality picture.
DVO 1 & 2
Connector
DVO CN 2
1
2
FTD1
FTD0
GND
FTD2
3.3V
FTD3
3.3V
GND
FTD5
FTD4
PCIRST1-
FTD6
GND
5V
5V
NC
SL_STALL
NC
GND
DVO CN 1
1
2
FTCLK1
AOpen Digital
FTVSYNC
GND
FTCLK0
Video/TV Riser Card
FTHSYNC
3.3V
3.3V
FTD7
GND
GND
FTD9
FTD8
FTD11
FTD10
3VFTSCL
FTBLNK-
3VFTSDA
1.8V
11
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20
3.3V
11
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C N R ( C o m m u ni c a t i o n a n d N e t w or k Ri s e r ) E x pa n s i o n S l o t
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 computing power getting stronger, the digital processing job can be
implemented in main chipset and share CPU power. The analogy conversion (CODEC) circuit requires a different and separate
circuit design, which is put on CNR card. This motherboard implements sound CODEC on board (can be disabled by JP12), but
reserve CNR slot for the option of modem function. Note that you can still use PCI modem card.
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P C 9 9 C ol or C o d e d B a c k P a n e l
The onboard I/O devices are PS/2 Keyboard, PS/2 Mouse, COM1 and 15-pin VGA Connector, Printer, eight USB, AC97 sound
and game ports. The view angle of drawing shown here is from the back panel of the housing.
SPP/EPP/ECP
Parallel Port
PS/2 Mouse
Connector
MIDI/Game Port
USB
Connectors
PS/2 Keyboard
Connector
PS/2 Keyboard:
PS/2 Mouse:
USB Port:
Parallel Port:
COM1 Port:
VGA Connector:
Speaker Out:
Line-In:
MIC-In:
MIDI/Game Port:
COM 1 Port
15-pin VGA Connector
For standard keyboard, which is using a PS/2 plug.
For PC-Mouse, which is using a PS/2 plug.
Available for connecting USB devices.
To connect with SPP/ECP/EPP printer.
To connect with pointing devices, modem or others serial devices.
To connect with PC monitor.
To External Speaker, Earphone or Amplifier.
Comes from the signal sources, such as CD/Tape player.
From Microphone.
For 15-pin PC joystick, game pad or MIDI devices.
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MIC-In
Line-In
Speaker Out
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S u p p o r t 8 US B C o n n e c t or s
This motherboard provides 8 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 other USB connectors to the back panel or
front panel of chassis. By the way, you can use JP34 to disable USB3 and USB4 if you do not need them.
Pin 1
Pin 1
1
Enable
Disable
(Default)
1
USB2 Connector
USB3 & 4
55
+5V
SBD2SBD2+
GND
KEY
2
+5V
SBD3SBD3+
GND
NC
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C h a s s i s I n t r u s i o n S e n s or
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.
Sense
GND
Chassis Intrusion
Connector
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C O M 2 C o n n e c t or
The AX3S Max/AX3S Plus II-U provides two serial port connectors. But, the COM2 port connector of PC99 colored back panel
has been replaced to VGA connector. The COM2 port connector will be mounted on the upper area of M/B. With proper cable,
you can connect it to the back panel of chassis.
Pin 1
COM2 Connector
DSR#
DTR#
SIN
CTS#
2
1
DCD#
SOUT
RTS#
RI#
GND
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C D A u d i o C o n n e c t or
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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M o d e m A u di o C o n n e c t o r
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.
MIC Out
GND
GND
Mono In
MODEM-CN
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A U X -I N C o n n e c t o r
This connector is used to connect MPEG Audio cable from MPEG card to onboard sound.
R
GND
GND
L
AUX-IN
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Fr o n t A u d i o C o n n e c t o r
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 Front Audio Connector before you connect the cable.
Do not remove this yellow jumper cap if housing without an audio port on the front panel.
Front Audio Connector
1
2
GND
+5V
JS1
KEY
NC
FP_MIC
NC
PHONE_R
NC
PHONE_L
9
10
Note: Please remove the jumper cap from the Front Panel Audio Connector before
you connect the cable. Do not remove this yellow jumper cap if housing without an
audio port on the front panel.
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Di e - H a r d B I O S ( O p t i o n a l )
Recently, many viruses have been found that they may destroy bios code and data area. Therefore, this motherboard
implements a very effective hardware protection method that does not involve any software or BIOS coding, hence it is 100%
virus free. You may restore the originally mounted BIOS with 2 nd BIOS ROM by setting JP30 to pin 2-3 if it fails to act normally.
This motherboard comes with one BIOS ROM, you may contact our local distributor or reseller for purchasing the extra BIOS
ROM. Please visit our website: www.aopen.com for details.
BIOS
ROM
JP30
Pin 1
Rescue
ROM
1
1
Normal
Rescue
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E x t e r n a l C o n t r ol l e r f or DI E - H A R D BI O S ( O p t i o n a l )
External Controller provides you a better and convenience way to switch the BIOS status between “Rescue” and “Normal”
without opening the case of your computer. You have to plug the jumper cable to the connector pin (JP30) on the motherboard.
Be careful of the orientation when you connect, the red wire should correspond to Pin1.
To / Form CPU
Read Only
Manual Switch
Read/Write
Normal
Rescue ROM
Flash ROM
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Note: If you suspect your BIOS is infected by virus, just rescue your bios by following steps:
1.
Turn off the system, set the External Controller to “Rescue” to read from rescue ROM.
2.
Boot the system and set the switch back to “Normal”.
3.
Follow the BIOS upgrade procedure to rehabilitate BIOS.
4.
Reboot the system, and you should be able to back to normal.
Normal
(Read from normal
Flash ROM)
Rescue
(Read from
Rescue ROM)
Tip: If you place the switch to the middle
(as 3rd picture shown), you will not be
able to boot your system, thus you can
protect your data from molesting.
64
Lock
(Lock your computer
to protect your data)
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Online Manual
GP O ( Ge n er al P u r p o s e O u t p u t ) C o n n e ct o r
GPO (General Purpose Output) is an advanced specification developed by AOpen for power users to define the further
function by oneself. For example, you can design a daughter board to provide additional capabilities, such as an alarm, a buzzer,
a timekeeper, etc.
Pin 1
1
6
3.3V
GPO19
GPO20
NC
GND
3
4
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Dr. LED Connector
In conjunction with Dr. LED (Upgrade Optional), which can easily show what kind of problem may occur on your system during
assembly. It can clearly indicate whether there is a component issue or an installation issue by the 8 LEDs on the front panel of
Dr. LED. This helps you quickly self-diagnostic your system status.
Pin 1
1
2
3.3V
NC
GND
GPO12
GPO14
GPO145
6
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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.
7
6
5
4
3
2
1
0
Boot O.K.
KB
HDD
Audio
PCI
Video
Memory
CPU
The total 8 LEDs light up alternatively if the system fails in one of eight stages. Once the LED7 (latest LED) is lit, this indicates
that the system has completed its boot-up procedure.
The 8 LEDs indicate the following messages when lit:
LED
LED
LED
LED
LED
LED
LED
LED
0
1
2
3
4
5
6
7
-
Indicates
Indicates
Indicates
Indicates
Indicates
Indicates
Indicates
Indicates
that
that
that
that
that
that
that
that
the CPU may have been installed incorrectly or is damaged.
the memory may have been installed incorrectly or is damaged.
the AGP may have been installed incorrectly or is damaged.
the PCI card may have been installed incorrectly or is damaged.
the floppy disk drive may have been installed incorrectly or is damaged.
the HDD may have been installed incorrectly or is damaged.
the keyboard may have been installed incorrectly or is damaged.
the system is OK.
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
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Dr. Voice
The Dr. Voice is a great feature of AX3S Pro-U motherboard, which can identifies what kind of problems had occurred in the
operating system. It can even clearly “tell” whether there is a component issue or an installed issue, such as CPU, memory
module, VGA, PCI add-on card, FDD, HDD or keyboard by voice. The Dr. Voice provides four kinds of language versions,
English, German, Japanese and Chinese for your choosing. You can select preferred language version by JP15 & JP16
jumpers.
JP16
JP15
Pin 1
Pin 1
Dr. Voice
Language
Select Jumper
JP16 JP15
1
English
1
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B a t t e r y - l e s s a n d L o n g Li f e D e s i g n
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.
ATX Stand-by Power
Battery
Auto Switch
Auto switching to ATX standby
RTC
(Real Time Clock)
00:00:00
Flash
ROM
power as long as AC power line is
plugged.
This
smart
design
increases battery life if you still plug
battery on motherboard.
CMOS
Backup by EEPROM
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O v e r - c ur r e n t P r o t e c t i o n
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.
12V (Protected by power supply)
ATX
3.3V (Protected by power supply)
Switching
Power
Supply
5V (Protected by power supply)
Over-Current
Protection
Circuit
Onboard
Power
Regulator
CPU Core Voltage
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 the protection circuit will always work perfectly.
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H a r d w a r e M o ni t o r i n g
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 go wrong, there will be
an alarm through the chassis external speaker or buzzer of motherboard (if existed) to warn the user.
Fan
Fan Speed
CPU
CPU Temperature
CPU Voltage
Power
System Voltage
71
Detection
Circuit
AOpen H/W
Monitoring
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R e se t ta b l e F u s e
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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P ow e r Br i d g e
All conductors resist the flow of current to some extent and in order to eliminate resistance to minimum, a most economical way
to reduce resistance is to make conductor as efficient as possible by providing so-called “conduit” to channel the current flow.
Resistance also creates heat and it has to be reduced to a controllable level. What AOpen engineers are doing is to provide a
better path to reach optimum power route to efficiently deliver power (both voltage and current) to destination without creating
heat that’s normally accompanied by high current with resistance during the journey.
Power Bridge
In a typical motherboard design, there are 4 layers of copper for the entire circuitry where both VCC and ground are sandwiched
between solder side and component side. In the older generation motherboard when bus speed and component numbers are
low, it is quite sufficient, but as the performance of today’s personal computer has reached to PC133 and operating over 1GHz
in CPU speed, the old method seems to be crippled by dilemma. Today’s motherboard design faces challenge of providing fast
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speed with low noise that is detrimental to the system stability. In order to provide every critical part of circuitry within the PCB,
AOpen deploys a new design concept called “Power Bridge”. These bridges are strategically place within the motherboard
design that provides both voltage and current to a targeted PCB region. This extra power is so pure that it contains no inherit
noise when travel through VCC and ground plane. Further, since the extra power is via “Power Bridge”, PCB VCC and Ground
will have lesser current flow through and lesser thermal problem.
Benefits
1.
Increase current flow and eliminate accompanied heat
2.
Even current distribution within motherboard
3.
Better PCB layout and component placement
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22 0 0μ f L o w E S R C a p ac i t o r
Besides the deployment of Power Bridge, a group of large capacitors that meet the requirements of today’s high performance
motherboard design. The theory behind this is long transmission lines have considerable inductance and capacitance as well as
resistance. When a current flows through the line, inductance and capacitance have the effect of varying the voltage on the line
as the current varies. Thus the supply voltage varies with
the load. Several kinds of devices are used to overcome
this undesirable variation, in an operation called regulation
of the voltage. They include induction regulators and
three-phase synchronous motors (called synchronous
condensers), both of which vary the effective amount of
inductance and capacitance in the transmission circuit.
Inductance and capacitance react with a tendency to
nullify one another. When a load circuit has more inductive
than capacitive reactance, as almost invariably occurs in
large power systems, the amount of power delivered for a
given voltage and current is less than when the two are
equal. The ratio of these two amounts of power is called
the power factor. Because transmission-line losses are
proportional to current, capacitance is added to the circuit
when possible, thus bringing the power factor as nearly as
possible to 1. For this reason, large capacitors are
frequently inserted as a part of power-transmission
systems.
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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, 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 143mv even when maximum 18A current is applied.
Note: This diagram for example only, it may not be exactly the same as this motherboard.
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Layout (Frequency Isolation Wall)
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 (1/1012 Sec)
Note: This diagram for example only, it may not be exactly
the same as this motherboard.
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P ur e Al u m i n u m H e a t s i n k
Cool down CPU and Chipset is important for system reliability. Aluminum heat sink provides better heat consumption especially
when you are trying to overclock.
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D ri v e r a n d U t i l i t y
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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A u t o - r u n Me n u f r o m B o n u s C D Di s c
You can use the auto-run menu of Bonus CD disc. Choose the utility and driver and select model name.
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Eliminate “?” mark from Windows 95/98
Windows 95/98 cannot recognize this chipset, because it was released before the Intel 815E B-Step 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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I n s t a l l i n g O n b o a r d A G P Dr i v e r
Intel 815E B-Step chipset integrates a 2D/3D graphics accelerator and provides AGP 2X/4X incredible performance to access
main memory at over 1GB/s. You can find the audio driver from the Bonus Pack CD disc auto-run menu.
Note: If you are using Windows95,
you should install DCOM95 patch
from the Bonus Pack auto-run menu
first, before you install AGP driver.
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Installing Ultra ATA/100 IDE Driver
This Intel® Ultra ATA Storage Driver is designed to take advantage of devices supporting ATA DMA/Ultra DMA technologies, and
improve system performance of Windows 98, Windows 98 Second Edition(SE), Windows Millennium Edition(Me), Windows NT*
4.0 (any Service Pack), and Windows 2000 operating systems. However, we could not guarantee it would not trigger any system
instabilities as Intel also suggests it is not a requirement for your operating system to work properly. Nevertheless, if you need
this driver, you can still find it in the AOpen Bonus Pack CD disc.
Note: Installing this ATA/100 IDE
driver may cause Suspend to
Hard Drive failure.
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I n s t a l l i n g O n b o a r d S o u n d Dr i v e r
This motherboard comes with an AD1885 AC97 CODEC. You can find the audio driver from the Bonus Pack CD disc auto-run
menu.
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I n s t a l l O n b o a r d I D E R A I D Dr i v e r ( A X 3 S M a x o n l y )
The onboard PROMISE ® FastTrak 100 Lite chipset provides 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 more detail information.
I n s t a l l F a s t C h e c k ™ M o ni t o r i n g U t i l i t y ( A X 3 S M a x o n l y )
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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A C P I S u s p e n d t o H a r d Dr i v e
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 disk within few seconds without go through the Windows booting process and run
your application again. If your memory is 64MB, normally, you need to reserve at least 64MB HDD space to save your memory
image.
When go into Suspend:
System
Image &
Status
Save into
Hard
Disk
When power-on next time:
System
Image &
Status
Hard
Disk
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 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 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 space automatically.
b. If you assign an individual partition for Win 98, please run "aozvhdd /c /partition". Of course, the system needs to
provide unformatted an empty partition.
4. Reboot system.
5. You've already implemented ACPI Suspend to-Hard Drive. Click "Start > Shut Down > Standby" then the screen will go off
immediately. And 1 minute or 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
WINDOWS
CURRENT VERSION
DETECT
b. Select "ADD Binary" and name it as "ACPIOPTION".
c. Right click and select Modify, add "01" after "0000" to make it "0000 01".
d. Save changes.
2. Select "Add New Hardware" under Control Panel. Allow Windows 98 to detect new hardware. (It will find "ACPI BIOS" and
remove "Plug and Play BIOS")
3. Reboot system.
4. Clean boot into DOS and run "AOZVHDD.EXE /C /File"
Changing from ACPI to APM
1. Run "Regedit.exe"
a. Go through the following path
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HKEY_LOCAL_MACHINE
SOFTWARE
MICROSOFT
WINDOWS
CURRENT VERSION
DETECT
ACPI OPTION
b. Right click and select "Modify, change "01" to "02" to make it "0000 02".
Tip: "02" means Windows 98 is ACPI acknowledged
but the ACPI function is disabled.
c. Save changes.
2. Select "Add New Hardware" under Control Panel. Allow Windows 98 to detect new hardware. (It will find "Plug and Play
BIOS" and remove "ACPI BIOS")
3. Reboot system.
4. Run "Add New Hardware" again and it will find "Advanced Power Management Resource".
5. Click "OK".
Tip: Currently we found only ATI 3D Rage Pro AGP card would support
ACPI suspend to disk. Please refer to AOpen web site for latest update
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A C PI S u s p e n d t o R A M ( S T R )
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:
System Image & Status
in the DRAM
Other System
Devices
Power loss
Backup by 3.3V
Power
When power-on next time:
System Image & Status
in the DRAM
Other System
Devices
Power back to
work
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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 following BIOS settings.
BIOS Setup > Power Management Setup > ACPI Function: Enabled
BIOS Setup > Power Management Setup > ACPI Suspend Type: S3.
2.
Go to Control Panel > Power Management. Set “Power Buttons” to “Standby”.
3.
Press power button or standby button to wake up the system.
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A W AR D B I O S
System parameters can be modified by going into BIOS Setup menu, this menu allows you to configure the system parameters
and save the configuration into the 128 bytes CMOS area, (normally in the RTC chip or in the main chipset).
The AwardBIOS™ that installed in the Flash ROM of the motherboard is a custom version of an industry standard BIOS. The
BIOS provides critical low-level support for standard devices such as hard disk drives, serial and parallel ports.
Most BIOS setting of AX3S Max/AX3S Plus II-U motherboard 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 system using setup.
To enter to BIOS setup menu, press <Del> when POST (Power-On Self Test) screen is shown on your monitor.
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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A b o u t BI O S F u n c t i o n De s c r i p t i o n …
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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How To Use Award™ BIOS Setup Program
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 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: 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.
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How To Enter BIOS Setup
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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BI O S U p g r a d e
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 binary file and flash routine are linked together
and you simply run a single commend to complete the flash process.
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 file from AOpen's web site.
For example, AX3SP2U102.ZIP.
2.
Run shareware PKUNZIP (http://www.pkware.com/) which supports miscellaneous operation systems to extract the
binary BIOS file and the flash utility.
Or Winzip (http://www.winzip.com/) in Windows environment.
3.
Save the unzipped file into a bootable floppy disk.
For example, AX3SP2U102.BIN & AX3SP2U102.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:> AX3SP2U102 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, Choose "Load Setup Defaults", then “Save & Exit Setup”. Done!
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.
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O v e r cl o c k i n g
As a leading manufacturer in motherboard industry, AOpen always listens to what customers want and develop products to fit
different user's requirements. Reliability, compatibility, leading technology and friendly features are our basic goals when
designing motherboards. Other than above mentioned design criteria, there are power users who are always seeking to push
the limitation of the system performance by overclocking which we call them "Overclocker".
This section is dedicated to overclockers.
This high performance motherboard is designed for maximum 100MHz CPU bus clock. But it comes with clock generator of
248MHz when we design it to accommodate future CPU bus clock. Our lab test results shown that 166MHz is achievable when
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 clock 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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VG A C ar d & H ar d D i s k
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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G l os s a r y
AC97
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.
A C P I ( A d v a n c e d C o n f i g ur a t i o n & P ow e r I n te r f a c e )
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. The chipset or super I/O chip needs to provide standard register interface
to operating system (such as Windows 98). This is a bit similar as the PnP register interface. ACPI defines ATX momentary soft
power switch to control the power state transition.
A G P ( A c c e l e ra t e d G r a p h i c P or t )
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.
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A M R ( A u d i o/ M o d e m R i s e r )
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.
A O pe n B o n us P a c k C D
A disc bundled with AOpen motherboard product; there are motherboard drivers, Acrobat Reader for PDF online manual and
other useful utilities.
A P M ( A d v a nc e d P o w e r Ma n a ge m e n t )
Unlike ACPI, BIOS controls most APM power management functions. AOpen Suspend to Hard Drive is a good example of APM
power management.
ATA (AT Attachment)
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.
ATA/66
ATA/66 uses both rising edge and falling edge but doubles UDMA/33 transfer rate. The data transfer rate is 4 times of the PIO
mode 4 or DMA mode 2, 16.6MB/s x4 = 66MB/s. To use ATA/66, you need special ATA/66 IDE cable.
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ATA/100
ATA/100 is a new IDE specification under developing. ATA/100 uses both rising edge and falling edge as ATA/66 but clock cycle
time is reduced to 40ns. The data transfer rate is (1/40ns) x 2 bytes x 2 = 100MB/s. To use ATA/100, you need special 80-wire
IDE cable, the same as ATA/66.
B I O S ( Ba s i c I n p u t / O u t p u t S y s t e m )
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.
B us M a s t e r I D E ( D M A m o de )
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 to support bus master IDE mode.
C N R ( C o m m un i c a t i o n a n d Ne t w o r k i n g R i s e r )
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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C O DE C ( C o d i n g a n d De c o di n g )
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.
D D R ( D o u b l e Da t a R a te d ) S D R A M
DDR SDRAM utilizes the existing DRAM infrastructure and technology while doubling the nominal bandwidth available to
systems in an easy to design and simple to adopt way. Initially a perfect solution for memory intensive server and workstation
applications, DDR low cost and low voltage will ultimately make it an ideal solution for all segments of the PC market, high
performance desktop and mobile PCs, Value PCs and even Internet Appliances and mobile devices.
D I M M ( D ua l I n L i ne M e m o r y M o d u l e )
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, which operate at 3.3V.
Note that some old DIMMs are made by FPM/EDO and only operate at 5V. Do not confuse them with SDRAM DIMM.
D M A ( D i r e c t Me m o r y Ac c e s s )
Channel for communications between the memory and surrounding devices.
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E C C ( E r r or C he c k i n g a n d C or r e c t i o n )
The ECC mode needs 8 ECC bits for 64-bit data. Each time memory is accessed; ECC bits are updated and checked by a
special algorithm. The ECC algorithm has the ability to detect double-bit error and automatically correct single-bit error while
parity mode can only detect single-bit error.
E DO ( E x t e n de d Da t a O u t p u t ) M e m or y
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 clock state.
E E P RO M ( E l e c tr o n i c E r a s a b l e P r o g r a m m a b l e R O M )
Also known as E 2PROM. 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.
E P R O M (E r a s a bl e P r o g r a m m a b l e R O M )
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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EV 6 B u s
EV6 Bus in the technology of Alpha processor from Digital Equipment Corporation. EV6 bus uses both rising and falling clock
edge to transfer data, similar as DDR SDRAM or ATA/66 IDE bus.
EV6 Bus Speed = CPU external bus clock x 2.
For example, 200 MHz EV6 bus is actually using 100 MHz external bus clock, but the equivalent speed is 200 MHz.
F C C D o C ( De c l a r a t i o n o f C o n f o r m i ty )
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.
F C - P G A ( F l i p C hi p - P i n G ri d A r ra y )
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.
F la s h R O M
Flash ROM can be re-programmed by electronic signals. It is easier for BIOS to upgrade by a flash utility, but it is also easier to
be infected by virus. Because of increase of new functions, BIOS size is increased from 64KB to 256KB (2M bit). AOpen AX5T is
the first board to implement 256KB (2Mbit) Flash ROM. Now flash ROM size is moving to 4M bit on AX6C (Intel 820) and MX3W
(Intel 810) motherboard. , AOpen motherboard uses EEPROM for jumper-less and battery-less design.
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F S B ( F r o n t S i d e B u s ) C l oc k
FSB Clock means CPU external bus clock.
CPU internal clock = CPU FSB Clock x CPU Clock Ratio
I2C Bus
See SMBus.
IE EE 1 39 4
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 just-in-time delivery eliminates the need
for costly buffering.
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P a r i t y Bi t
The parity mode uses 1 parity bit for each byte, normally it is even parity mode, that is, each time the memory data is updated,
parity bit will be adjusted to have even count "1" for each byte. When next time, if memory is read with odd number of "1", the
parity error is occurred and this is called single bit error detection.
P BS R A M ( P i p e l i n e d B u r s t S R A M )
For Socket 7 CPU, one burst data read requires four QWord (Quad-word, 4x16 = 64 bits). PBSRAM only needs one address
decoding time and automatically sends the remaining QWords to CPU according to a predefined sequence. Normally, it is
3-1-1-1, total 6 clocks, which is faster than asynchronous SRAM. PBSRAM is often used on L2 (level 2) cache of Socket 7 CPU.
Slot 1 and Socket 370 CPU do not need PBSRAM.
P C -1 0 0 D I M M
SDRAM DIMM that supports 100MHz CPU FSB bus clock.
P C -1 3 3 D I M M
SDRAM DIMM that supports 133MHz CPU FSB bus clock.
P C -1 6 0 0 o r P C - 2 1 0 0 D D R D R A M
Based on FSB frequency, the DDR DRAM has 200MHz and 266MHz two type of working frequency. Because of DDR DRAM
data bus is 64-bit, it provides data transfer bandwidth up to 200x64/8=1600MB/s, and 266x64/8=2100MB/s. Hence, the PC-1600
DDR DRAM is working with 100MHz and PC-2100 DDR DRAM is working with 133MHz FSB frequency.
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P CI ( P e r i ph e r a l C o m p o ne n t I n te r f a c e ) B u s
Bus for the internal connection of peripheral devices, high-speed data channel between the computer and expansion card.
P D F F o r ma t
A file format for electronic document, PDF format is independent from platform, you can read PDF file under Windows, Unix,
Linux, Mac … with different PDF reader. You can also read PDF file by web browser such as IE and Netscape, note that you
need to install PDF plug-in first (Included in Acrobat Reader).
P nP ( P l u g a n d P l a y )
The PnP specification suggests a standard register interface for both BIOS and operating system (such as Windows 95). These
registers are used by BIOS and operating system to configure system resource and prevent any conflicts. PnP BIOS or
operating system will automatically allocate the IRQ/DMA/Memory. Currently, almost all the PCI cards and most ISA cards are
already PnP compliant.
POST (Power-On Self Test)
The BIOS self-test procedure after power-on, sometimes, it is the first or the second screen shown on your monitor during
system boot.
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R D R A M ( R a mb u s D R A M )
Rambus is a memory technology that uses large burst mode data transfer. Theoretically, the data transfer should be high than
SDRAM. RDRAM is cascaded in channel operation. For Intel 820, only one RDRAM channel is supported, 16-bit data per
channel, and this channel may have maximum 32 RDRAM devices, no matter how many RIMM sockets.
R I M M ( Ra m b u s I n l i n e M e m o r y M o d u l e )
184-pin memory module that supports RDRAM memory technology. A RIMM memory module may contain up to maximum of 16
RDRAM devices.
S D R A M (S y nc h r o n o us D R A M )
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 to use burst mode transfer. SDRAM comes in 64-bit
168-pin DIMM and operates at 3.3V. AOpen is the first company to support dual-SDRAM DIMMs onboard (AP5V), from Q1 1996
2
S ha d o w E P R O M
A memory space in Flash-ROM to simulate E 2PROM operation, AOpen motherboard uses Shadow E 2PROM for jumper-less and
battery-less design
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S I M M ( S i n gl e I n Li n e Me m o r y M o d u l e )
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 DRAM and supports 32-bit data. SIMM had been phased out on
current motherboard design.
S M B us ( S y s te m Ma n a g e m e n t B us )
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.
S P D ( S e r i a l P r e s e nc e D e te c t )
SPD is a small ROM or EEPROM device resided on the DIMM or RIMM. SPD stores memory module information such as DRAM
timing and chip parameters. SPD can be used by BIOS to decide best timing for this DIMM or RIMM.
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U l t ra D M A
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) interface. Ultra DMA was
developed as a proposed industry standard by the Quantum corporation, makes of hard disk drives, and Intel, makes of chipset
that support computer bus technology. Ultra DMA support in your computer means that it will boot (start) and open new
applications more quickly. It will help users of graphic-intensive and applications that require large amounts of access to data on
the hard disk drive. 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
U S B ( U n i v e rs a l S e r i a l B us )
USB is a 4-pin serial peripheral bus that is capable of cascading low/medium speed peripherals (less than 10Mbit/s) such as
keyboard, mouse, joystick, scanner, printer and modem. With USB, the traditional complex cables from back panel of your PC
can be eliminated.
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VCM (Virtual Channel Memory)
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.
Z IP f i le
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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T r ou b l e s h o o t i n g
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
i t
Make sure if all jumper settings are correct.
Clear CMOS
Next
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Continue
Install the VGA card. Then connect your monitor and keyboard.
Turn on the power
Yes
and check if the power
supply and CPU fan work
properly.
No
The problem is probably caused by
power supply or motherboard failure.
Please contact your reseller or local
distributor for repairing.
Next
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Continue
No
Check if there is display?
Perhaps your VGA card
or monitor is defective.
Yes
Press <Ctrl> and <Alt> key at the same time, hold
them and then press <Del> to reboot the system.
No
Check if the system
reboots?
Yes
Next
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It is very possible that your
keyboard is defective.
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Continue
During system rebooting, press <Del> to enter BIOS
setup. Choose “Load Setup Default”.
Turn off the system and re-connect IDE cable.
Check if the system can
No
reboot successfully?
Yes
Re-install the operating system such as Windows 98.
End
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The problem should be
caused by the IDE
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T e ch n ic a l Su p p o r t
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
1
Online Manual: Please check the manual carefully and make sure the jumper settings and installation procedure are
correct.
http://www.aopen.com.tw/tech/download/manual/default.htm
2
Test Report: We recommend choosing board/card/device from the compatibility test reports for assembling your PC.
http://www.aopen.com.tw/tech/report/default.htm
3
FAQ: The latest FAQ (Frequently Asked Questions) may contain a solution to your problem.
http://www.aopen.com.tw/tech/faq/default.htm
4
Download Software: Check out this table to get the latest updated BIOS/utility and drivers.
http://www.aopen.com.tw/tech/download/default.htm
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5
News Group: Your problem probably had been answered by our support engineer or professional users on the news
6
7
Contact Distributors/Resellers: We sell our products through resellers and integrators. They should know your
group.
http://www.aopen.com.tw/tech/newsgrp/default.htm
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 symptom before contacting us. The part number,
serial number and BIOS version are also very helpful.
Part Nu m b er an d Seri al Nu m b er
The Part Number and Serial number are printed on bar code label. You can find this bar code label on the outside packing, on
ISA/CPU slot or on component side of PCB. For example:
Part No
Part No
Serial No
Serial No
P/N: 91.88110.201 is part number, S/N: 91949378KN73 is serial number.
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Mo d e l n a m e a n d B I O S v e r s i o n
Model name and BIOS version can be found on upper left corner of first boot screen (POST screen). For example:
AX3S Plus II-U R1.20 Nov.01.2000 AOpen Inc.
Award Plug and Play BIOS Extension v1.0A
Copyright © 1998, Award Software, Inc.
AX3S Plus II-U is model name of motherboard, R1.20 is BIOS version.
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Produ c t R egis tration
Thank you for choosing AOpen product. AOpen encourages you to spend few minutes in completing the following product
registration. To register your product will ensure the high quality of services from AOpen. After the registration, you will:
• Have opportunities to play online slot machine and win a prize from AOpen by accumulating your bonuses for later prize
exchange.
•
•
Be upgraded to gold membership of Club AOpen program.
Receive email notification about product safety alerts. Its purpose is to alert consumers quickly and conveniently when
products contain technical issues.
•
Receive email notification about latest product's announcements.
•
Be able to personalize your AOpen web pages.
•
Receive e-mail notification about latest BIOS/Driver/Software release information.
•
Have opportunities to participate special product promotional programs.
•
Enjoy higher service priority to receive technical assistance provided by AOpen specialists worldwide.
•
Be able to join the discussions of web-based news groups.
AOpen makes sure that the information you provide is encrypted, so that it cannot be read or intercepted by other people or
companies. Further, AOpen will not disclose any of information you submitted under any conditions. Please consult our online
privacy policy for further information on our company policy.
Note: If registering products purchased from different
dealers/retails and/or purchased on different dates,
please submit a separate form for each product.
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H o w t o C o n t ac t U s
Please do not hesitate contact us if you have any problem about our products. Any opinion will be appreciated.
America
Pacific Rim
Europe
AOpen Inc.
AOpen Computer b.v.
AOpen America Inc.
Tel: 886-2-2696-1333
Tel: 31-73-645-9516
Tel: 1-510-498-8928
Fax: 886-2-8691-2233
Fax: 31-73-645-9604
Fax: 1-408-922-2935, 1-408-432-0496
China
Germany
艾尔鹏国际上海(股)有限公司
AOpen Computer GmbH.
Tel: 49-2102-157700
Tel: 49-2102-157700
Fax: 49-2102-157799
Fax: 49-2102-157799
Web Site: http://www.aopen.com.tw
E-mail: Send us email by going through the contact form below.
English
http://www.aopen.com.tw/tech/contact/techusa.htm
Japanese
http://aojp.aopen.com.tw/tech/contact/techjp.htm
Chinese
http://w3.aopen.com.tw/tech/contact/techtw.htm
German
http://www.aopencom.de/tech/contact/techde.htm
French
http://aofr.aopen.com.tw/tech/contact/techfr.htm
Simplified Chinese http://www.aopen.com.cn/tech/contact/techcn.htm
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