AOpen AK778X User Manual
AAKK7777--88XX // AAKK7777--88XXNN OOnnlliinnee MMaannuuaall
Overview
AK77-8X / AK77-8XN
DOC. NO.: AK778XN-OL-E0210C
Installation
Hardware
Drivers &
Utilities
BIOS Setup
AWARD
1
Technical Support
Glossary
Troubleshooting &
AAKK7777--88XX // AAKK7777--88XXNN OOnnlliinnee MMaannuuaall
WWhhaatt’’ss iinn tthhiiss mmaannuuaall
AK77-8X / AK77-8XN........................................................................................................................ 1
What’s in this manual ......................................................................................................................................................2
You Must Notice ..............................................................................................................................................................9
Before You Start............................................................................................................................................................ 10
Overview ....................................................................................................................................................................... 11
Feature Highlight........................................................................................................................................................... 12
Quick Installation Procedure ......................................................................................................................................... 16
Motherboard Map .......................................................................................................................................................... 17
Block Diagram ............................................................................................................................................................... 18
Hardware Installation................................................................................................................ 19
About “Manufacturer Upgrade Optional” and “User Upgrade Optional”… ...................................................................... 20
JP14 Clear CMOS Data ................................................................................................................................................21
CPU Installation ............................................................................................................................................................ 22
AOpen Overheat Protection (O.H.P.) Technology .......................................................................................................... 24
JP28 KB/Mouse Wake-up Enable/Disable Jumper ........................................................................................................ 25
CPU Jumper-less Design ..............................................................................................................................................26
CPU and Housing Fan Connector (with H/W Monitoring) ..............................................................................................31
JP20 K7 Host Clock Selection....................................................................................................................................... 32
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DIMM Sockets ............................................................................................................................................................... 33
Front Panel Connector .................................................................................................................................................. 35
ATX Power Connector................................................................................................................................................... 36
AC Power Auto Recovery .............................................................................................................................................. 36
STBY LED..................................................................................................................................................................... 37
IDE and Floppy Connector ............................................................................................................................................ 38
S/PDIF (Sony/Philips Digital Interface) Connector......................................................................................................... 40
Super 5.1 Channel Audio Effect .................................................................................................................................... 41
IrDA Connector .............................................................................................................................................................42
WOM (Zero Voltage Wake on Modem) Connector......................................................................................................... 43
WOL (Wake on LAN) ..................................................................................................................................................... 46
AGP (Accelerated Graphic Port) 8X Expansion Slot ...................................................................................................... 48
AGP Protection Technology and AGP LED.................................................................................................................... 49
CNR (Communication and Network Riser) Expansion Slot ............................................................................................ 50
PC99 Color Coded Back Panel .....................................................................................................................................51
Support Six USB 2.0 Port.............................................................................................................................................. 52
Support 10/100 Mbps LAN onboard (AK77-8XN only) ................................................................................................... 53
Chassis Intrusion Sensor ..............................................................................................................................................54
CD Audio Connector ..................................................................................................................................................... 55
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AUX-IN Connector......................................................................................................................................................... 56
Front Audio Connector ..................................................................................................................................................57
Battery-less and Long Life Design................................................................................................................................. 58
CPU Over-current Protection......................................................................................................................................... 59
AOConfig Utility............................................................................................................................................................. 60
Resetable Fuse ............................................................................................................................................................. 62
2200μF Low ESR Capacitor......................................................................................................................................... 63
Layout (Frequency Isolation Wall) ................................................................................................................................. 65
Enlarged Aluminum Heatsink ........................................................................................................................................ 66
Open JukeBox Player.................................................................................................................................................... 67
Vivid BIOS technology................................................................................................................................................... 71
Driver and Utility .......................................................................................................................72
Auto-run Menu from Bonus CD Disc ............................................................................................................................. 73
Installing Windows 95 ................................................................................................................................................... 74
Installing Windows 98 ................................................................................................................................................... 75
Installing Windows® 98 SE, Windows® ME & Windows®2000/XP................................................................................... 76
Installing VIA 4 in 1 Driver ............................................................................................................................................. 77
Installing Onboard Sound Driver ...................................................................................................................................78
The noise is gone!! ---- SilentTek .................................................................................................................................. 80
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Installing USB2.0 Driver ................................................................................................................................................ 83
Installing LAN Driver (AK77-8XN only) .......................................................................................................................... 84
PHOENIX-AWARD BIOS..............................................................................................................86
How To Use Phoenix Award™ BIOS Setup Program..................................................................................................... 87
How To Enter BIOS Setup ............................................................................................................................................. 89
BIOS Upgrade under Windows environment ................................................................................................................. 90
Overclocking.............................................................................................................................. 92
VGA Card & Hard Disk .................................................................................................................................................. 93
Glossary ....................................................................................................................................94
AC97 ............................................................................................................................................................................. 94
ACPI (Advanced Configuration & Power Interface) ....................................................................................................... 94
AGP (Accelerated Graphic Port).................................................................................................................................... 94
AMR (Audio/Modem Riser)............................................................................................................................................ 95
AOpen Bonus Pack CD ................................................................................................................................................. 95
APM (Advanced Power Management)........................................................................................................................... 95
ATA (AT Attachment) ..................................................................................................................................................... 95
ATA/66 ..........................................................................................................................................................................95
ATA/100 ........................................................................................................................................................................ 96
ATA/133 ........................................................................................................................................................................ 96
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BIOS (Basic Input/Output System) ................................................................................................................................ 96
Bus Master IDE (DMA mode) ........................................................................................................................................ 96
CNR (Communication and Networking Riser)................................................................................................................ 97
CODEC (Coding and Decoding) .................................................................................................................................... 97
DDR (Double Data Rate) SDRAM ................................................................................................................................. 97
DIMM (Dual In Line Memory Module) ............................................................................................................................ 97
DMA (Direct Memory Access)........................................................................................................................................ 98
ECC (Error Checking and Correction) ........................................................................................................................... 98
EDO (Extended Data Output) Memory ..........................................................................................................................98
EEPROM (Electronic Erasable Programmable ROM) .................................................................................................... 98
EPROM (Erasable Programmable ROM)....................................................................................................................... 98
EV6 Bus ........................................................................................................................................................................ 99
FCC DoC (Declaration of Conformity) ........................................................................................................................... 99
FC-PGA (Flip Chip-Pin Grid Array) ................................................................................................................................ 99
Flash ROM .................................................................................................................................................................... 99
FSB (Front Side Bus) Clock ........................................................................................................................................ 100
I2C Bus........................................................................................................................................................................ 100
IEEE 1394................................................................................................................................................................... 100
Parity Bit ..................................................................................................................................................................... 101
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PBSRAM (Pipelined Burst SRAM)............................................................................................................................... 101
PC-100 DIMM ............................................................................................................................................................. 101
PC-133 DIMM ............................................................................................................................................................. 101
PC-1600 / PC-2100/ PC-2700 / PC-3200 DDR DRAM................................................................................................. 102
PCI (Peripheral Component Interface) Bus .................................................................................................................102
PDF Format................................................................................................................................................................. 102
PnP (Plug and Play) .................................................................................................................................................... 102
POST (Power-On Self Test) ........................................................................................................................................ 103
RDRAM (Rambus DRAM) ........................................................................................................................................... 103
RIMM (Rambus Inline Memory Module) ......................................................................................................................103
SDRAM (Synchronous DRAM) .................................................................................................................................... 103
Shadow E2PROM ........................................................................................................................................................ 104
SIMM (Single In Line Memory Module) ....................................................................................................................... 104
SMBus (System Management Bus) ............................................................................................................................. 104
SPD (Serial Presence Detect) ..................................................................................................................................... 104
Ultra DMA ................................................................................................................................................................... 105
USB (Universal Serial Bus) .........................................................................................................................................105
VCM (Virtual Channel Memory)................................................................................................................................... 106
ZIP file......................................................................................................................................................................... 106
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Troubleshooting....................................................................................................................... 107
Technical Support ...................................................................................................................111
Product Registration ............................................................................................................... 114
How to Contact Us .................................................................................................................. 115
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YYoouu MMuusstt NNoottiiccee
Adobe, the Adobe logo, and Acrobat are trademarks of Adobe Systems Incorporated.
AMD, the AMD logo, Athlon and Duron are trademarks of Advanced Micro Devices, Inc.
Intel, the Intel logo, Intel Celeron, Pentium II, Pentium III, Pentium 4 are trademarks of Intel Corporation.
Microsoft, Windows, and Windows logo are either registered trademarks or trademarks of Microsoft Corporation in the United
States and/or other countries.
All product and brand names used on this manual are used for identification purposes only and may be the registered
trademarks of their respective owners.
All of the specifications and information contained in this manual are subject to change without notice. AOpen reserves the right
to revise this publication and to make reasonable changes. AOpen assumes no responsibility for any errors or inaccuracies that
may appear in this manual, including the products and software described in it.
This documentation is protected by copyright law. All rights are reserved.
No part of this document may be used or reproduced in any form or by any means, or stored in a database or retrieval
system without prior written permission from AOpen Corporation.
Copyright
©
1996-2002, AOpen Inc. All Rights Reserved.
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BBeeffoorree YYoouu SSttaarrtt
This Online Manual will introduce how this product is installed to the user. 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 helping in saving our earth.
.
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OOvveerrvviieeww
Thanks for choosing AOpen AK77-8X / AK77-8XN. The AK77-8X / AK77-8XN is AMD® Socket 462 motherboard (M/B) based on
the ATX form factor featuring the VIA Apollo KT400 chipset
AK77-8XN AMD
Athlon™XP CPU only) and 200/266/333MHz EV6
/8X mode and pipelined spilt-transaction long burst transfer up to 2.1GB/sec. With high bandwidth 200/266/333MB/s 8-bit V-Link
Host Controller, DDR333(PC2700)
maximum memory size can be up to 3GB. The on-board IDE
controller supports Ultra DMA
transfer rate up to 133MB/s. Further flexibility can be achieved
by taking advantage of the Communication and Network Riser
(CNR) card option that allows audio and modem configuration
on a single baseboard design. More than that, on the strength
of RealTek RTL8100BL controller on board, which is an
highly-integrated Platform LAN Connect device, it provides
10/100M bps Ethernet for office and home use (AK77-8XN only).
Besides, the AK77-8X / AK77-8XN has an AC97
Realtek ALC650 chipset onboard for providing high
performance and magic surround stereo sound to let people
enjoy working with it. More than that, this motherboard supports
USB 2.0
let’s enjoy all features from AOpen AK77-8X / AK77-8XN.
function with a fancy speed of up to 480Mbps. Now,
®
Socket 462 series Athlon™ & Duron™ and AthlonXP™ processor (with CPU Overheat Protection circuit to
system bus. In the AGP performance, it has one AGP slot and supports AGP
and DDR266(PC2100)DDR SDRAM can be applied to the AK77-8X / AK77-8XN and the
66/100/133 mode and the
CODEC
. As high performance chipset built in the M/B, the AK77-8X /
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FFeeaattuurree HHiigghhlliigghhtt
CPU
Supports AMD® Socket 462 series CPU with 200/266/333 MHz EV6 Bus designed for Socket 462 technology.
Athlon: 600MHz~1.4GHz
Duron: 600MHz~1.3GHz
AthlonXP: 1500+(1.33GHz)~2800+(2.25GHz)
Chipset
The VIA Apollo KT400 consists of the KT400 V-Link DDR Host system controller and the VT8235 highly integrated V-Link Client
PCI/LPC controller. The Host system controller provides superior performance between the CPU, SDRAM, AGP bus, and V-Link
interface with pipelined, burst, and concurrent operation. The VT8235 V-Link Client controller is a highly integrated PCI/LPC
controller. Its internal bus structure is based on 66MHz PCI bus that provides 4x bandwidth compare to previous generation
PCI/ISA bridge chips. The VT8235 integrated Client V-Link controller with 200/266MB/s bandwidth between Host/Client V-Link
interface, providing a V-Link-PCI and V-Link-LPC controller.
Ultra DMA 66/100/133 Bus Master IDE
Comes with an on-board PCI Bus Master IDE controller with two connectors that supports four IDE devices in two channels,
supports
Ultra DMA
66/100/133, PIO Modes 3 and 4 and Bus Master IDE DMA Mode 4, and supports Enhanced IDE devices.
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Expansion Slots
Including six 32-bit/33MHz PCI, one CNR and one AGP 8X slots. The PCI local bus throughput can be up to 132MB/s. The
Communication & Nectworking Riser (CNR)
Modem/Audio card. The
speed. The AGP video cards support data transfer rate up to 2.1GB/s. As AK77-8X / AK77-8XN includes one AGP expansion
slot for a bus mastering AGP graphic card, For AD and SBA signaling, AK77-8X / AK77-8XN can support 133MHz 2X/4X/8X
mode. Of six PCI slots provided, all of them support master PCI slots for arbitration and decoding functions.
Accelerated Graphics Port (AGP)
slot provided from AK77-8X / AK77-8XN can support CNR interface for a
specification provides a new level of video display sophistication and
Memory
With VIA Apollo KT400 chipset, the AK77-8X / AK77-8XN can support Double-Data-Rate (DDR) RAM. The DDR RAM interface
allows zero wait state bursting between the RAM and the data buffers at 333/266/200 MHz. The six banks of DDR RAM can be
composed of an arbitrary mixture of 64, 128, 256, 512MB x N DDR RAM and maximum up to 3GB. The AK77-8X / AK77-8XN
allows DDR RAM to run at either synchronous or pseudo-synchronous mode with the host CPU bus frequency
(333/266/200MHz).
LAN Port (AK77-8XN only)
On the strength of RealTek RTL8100BL controller on board, which is an highly-integrated Platform LAN Connect device, it
provides 10/100 Mbps Ethernet for office and home use.
On-board AC97 Sound
AK77-8X / AK77-8XN uses the AC97 CODEC RealTek ALC650 chip, which supports high quality of 5.1 Channel audio effects.
This on-board audio includes a complete audio recording and playback system.
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Six USB 2.0 Connectors
Provides three ports, six USB connectors for USB interface devices, such as mouse, keyboard, modem, scanner, etc. Please be
noted that USB 2.0, with fancy speed up to 480Mbps, is 40 times faster than the traditional ones. Except for the speed increase,
USB 2.0 supports old USB 1.0/1.1 software and peripherals, offering impressive and even better compatibility to customers.
1MHz Stepping Frequency Adjustment
Provides “1MHz Stepping Frequency Adjustment” function in the BIOS. This magic function allows you to adjust CPU FSB
frequency from 100~191 by 1MHz stepping, and lets your system 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.
Power Management/Plug and Play
The AK77-8X / AK77-8XN 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
configuration problems, thus making the system much more user-friendly.
Plug-and-Play
, which helps saving users from
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Hardware Monitoring Management
Supports CPU or system fans status, temperature and voltage monitoring and alert, through the on-board hardware monitor
module and
AOpen Hardware Monitoring Utility
.
Enhanced ACPI
Fully implement the ACPI standard for Windows® 95/98/ME/NT/2000/XP 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 AK77-8X / AK77-8XN provides two high-speed UART compatible serial ports and one parallel port with EPP and ECP
capabilities. UART2 can also be directed from COM2 to the Infrared Module for the wireless connections.
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QQuuiicckk IInnssttaallllaattiioonn PPrroocceedduurree
This page gives you a quick procedure on how to install your system. Follow each step accordingly.
1. Installing CPU and Fan
2. Installing System Memory (DIMM)
3. Connecting Front Panel Cable
4. Connecting IDE and Floppy Cable
5. Connecting ATX Power Cable
6. Connecting Back Panel Cable
7. Power-on and Load BIOS Setup Default
8. Setting CPU Frequency
9.
Reboot
Installing Driver and Utility
10.
16
RealTek RTL8100BL
SYS
FAN 3
C
j
JP20 K7 Host Clock
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AAKK7777--88XX // AAKK7777--88XXNN
OOnnlliinnee MMaannuuaall
Front Audio Connector
AC97 CODEC
AUX-IN Connector
CD-IN Connector
S/PDIF Connector
2MbFlash Rom
CNR Expansion Slot
32-bit PCI Expansion Slot x6
n
2
WOM (Wake ON Modem)
JP14 CMOS Data Clear Jumper
IrDA Connector
USB 2.0 Port Connector
Chassis Intrusion
Sensor Connector
STBY LED
JST-MIDI
onnector
Front Panel Connector
FDD Connector
Motherboard Map
PC99 Colored Back Panel
Resetable Fuse
JP28 KB/Mouse Wakeup
Enable/Disable jumper
WOL (Wake ON LAN)
(AK77-8XN only)
ATX Power Co
2200μF Low ESR Capacitors
SYSFAN2 Connector
AGP 8x Expansion Slot
462-pin CPU Socket
Voltage and Frequency
Auto-Detection supports
TM TM TM
AMD
Athlon
Protection circuit to
Athlon
ATTA N SIC AT XP1
(Memory/AGP voltage
ustable Controller)
Ad
VIA® Apollo KT400 Chipset
and VT8235 SB
CPUFAN1 Connector
with H/W Monitoring
184-pin DIMMx3 supports
DDR333/266/200
(Max. to 3B)
IDE Connector x 2
(ATA/66/100/133 supported)
Select Jumper
nnector
Athlon / Duron /
TM
XP (CPU Overheat
TM
XP CPU only)
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BBlloocckk DDiiaaggrraamm
Socket 462
AMD
Athlon/Duron/AthlonXP
CPU
AGP 8X Slot
DDR SDRAM Socket x3
100/133/166
MHz System
Bus
AGP Bus
LAN connect Component
PC1600/2100/2700
DDR RAM Up to 3GB
VIA KT400
(AK77-8XN only)
Floppy Disk Dri ve x2
PCI Bus
RealTek
RTL8100
1stUSB Port
2ndUSB Port
3rdUSB Port
USB c onnect or x6
32-bit PCI Slot x6
ATA
66/100/133
BL
Primary
Channel
Secondary
Channel
VT8235
AC’97 Link
Modem CODEC
2MBit Flash EEPROM
Parallel Port
Serial Port x2
IDE Drive x4
Audio CODEC
CNR Slot
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HHaarrddwwaarree IInnssttaallllaattiioonn
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 procedures requiring ESD protection.
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AAbboouutt ““MMaannuuffaaccttuurreerr UUppggrraaddee OOppttiioonnaall”” aanndd ““UUsseerr UUppggrraaddee
OOppttiioonnaall””……
When you read this online manual and start to assemble your computer system, you may find some of functions are called
“Manufacturer Upgrade Optional”, and some are called “User 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 “Manufacturer Upgrade Optional” for you to choose. Some optional functions that can be upgraded by
users, we call them “User Upgrade Optional”. As for those optional functions that can’t be upgraded by ourselves, we call them
“Manufacturer Upgrade Optional”. If needed, you can contact our local distributors or resellers for purchasing “User Upgrade
Optional” components, and again you can visit AOpen official web site: http://english.aopen.com.tw/
for more detail information.
20
A
A
KK7777--88XX // AAKK7777--88XXNN
OOnnlliinnee MMaannuuaall
JJPP1144 CClleeaarr CCMMOOSS DDaattaa
You can clear CMOS to restore system default setting. To clear the CMOS, follow the procedures below.
1. Turn off the system and unplug the AC power.
2. Remove ATX power cable from connector PWR2.
3. Locate JP14 and short pins 2-3 for a few seconds.
4. Return JP14 to its normal setting by shorting pin 1 & pin 2.
5. Connect ATX power cable back to connector PWR2.
Clear CMOS Normal Operation
Pin 1
1 1
(default)
Tip: When should I Clear CMOS?
1. Boot fail because of overclocking…
2. Forget password…
3. Troubleshooting…
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CCPPUU IInnssttaallllaattiioonn
This motherboard supports AMD® Athlon and Duron Socket 462 series CPU. Be careful of CPU orientation when you plug it into
CPU socket (with CPU Overheat Protection function implemented, the system will be automatically power off when the
temperature of CPU reached 97 degree, but only works on AthlonXP CPU only).
1. Pull up the CPU socket lever and
up to 90-degree angle.
2. Locate Pin 1 in the socket and look for a black dot or cut edge on the
CPU upper interface. Match Pin 1 and cut edge, then insert the CPU into
the socket.
CPU socket
Lever
Note: This picture is for example only, it may not exactly be the same motherboard.
CPU pin 1
and cut edge
Black dot and
cut edge
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3. Press down the CPU socket lever and finish
CPU installation.
Note: This picture is for example only, it may not exactly be the same motherboard.
CPU cut edge
Note: If you do not match the CPU
socket Pin 1 and CPU cut edge well, it
ma
damage the CPU.
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AAOOppeenn OOvveerrhheeaatt PPrrootteeccttiioonn ((OO..HH..PP..)) TTeecchhnnoollooggyy
With AMD platform substantially keeps increasing the speed of its CPU, it inevitably led to the annoying problem of high CPU
operation temperature at the same time. In order to prevent accidental failure of CPU fan, which could cause the burning down
of the AthlonXP CPU, we, AOpen, have meticulously developed a new technology, named, O.H.P. (Overheat Protection)
Technology to protect them. Thanks to the intelligent monitoring design of AOpen O.H.P. technology, user can now finally set
their mind at ease even when fan failed to work without fearing the possible damage of CPU.
Under the circumstances that CPU fan is running properly, AthlonXP temperature should be way below the highest temperature
limit of 97℃. However, if CPU fan accidentally becomes
malfunction or improperly installed, the CPU temperature
would rocket abruptly, and you may find your system
hang up or crying over the smoking CPU if you haven’t
installed AOpen O.H.P. previously. With AOpen O.H.P.
technology applied, the specific thermal detection pins on
AthlonXP CPU would sense voltage difference when
processor is overheated with fan failed, and the overheat
protection system would immediately send out a signal to
abort your system by cutting CPU electricity before any
damage is done. Unlike other manufacturers who use
BIOS or software to control the power supply of CPU,
AOpen O.H.P. Technology is purely hardware-controlled
the minute after system boot-up, and occupies no system
resource. We are pleasant to phase in this practical
function on all AOpen AMD series motherboards to
protect customer’s valuable hardware and personal data.
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(
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JJPP2288 KKBB//MMoouussee WWaakkee--uupp EEnnaabbllee//DDiissaabbllee JJuummppeerr
This motherboard provides keyboard / mouse wake-up function. You can use JP28 to enable or disable this function, which
could resume your system from suspend mode with keyboard or mouse installed. The factory default setting is set to
“Disable”(1-2), and you may enable this function by setting the jumper to 2-3.
JP28 KB/Mouse
Wake-up Jumper
1
Disable
Default
Enable
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AMD
CPU
CPU Freq. Ratio
CPU voltage
Clock Generator
BIOS
Controlled
Circuit
CCPPUU JJuummppeerr--lleessss DDeessiiggnn
CPU VID signal and SMbus clock generator provide CPU voltage auto-detection and allows the user to set the CPU frequency
through the BIOS setup
designs are eliminated. There will be no worry of wrong CPU voltage detection.
, therefore no jumpers or switches are used. The disadvantages of the Pentium based jumper-less
Socket 462
CPU VID signal
Power Regulator
(Automatically generates CPU voltage)
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FFuullll--rraannggee AAddjjuussttaabbllee CCPPUU CCoorree VVoollttaaggee
This function is dedicated to overclockers. The CPU core voltage of this motherboard is adjustable 1.1V to 1.85V by 0.05V
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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SSeettttiinngg CCPPUU FFrreeqquueennccy
This motherboard is CPU jumper-less design, you can set CPU frequency through the BIOS setup, and no jumpers or switches
are needed.
y
BIOS Setup > Frequency/Voltage Control > CPU Speed Setting
CPU Ratio
CPU FSB
(By manual Adjustment)
Warning: VIA® Apollo KT400 chipset supports
133MHz FSB (with performance reaches maximum
266MHz EV6 system bus) and 66MHz AGP clock,
higher clock setting may cause serious system
damage.
Home
From 5.5x to 16.5x step 0.5x; 17x to 18x step 1x
FSB=100, 100~129 by 1MHz stepping adjustment technology
FSB=133, 130~160 by 1MHz stepping adjustment technology
FSB=166, 161~191 by 1MHz stepping adjustment technology
Warning: Supposed you have had adjusted CPU
ratio on your current CPU, and you plan to replace a
new CPU. Please use <Home> key or Clear CMOS
to restore the default setting when changing a new
CPU, because the system will still implement the
previous CPU setting on the new one.
Tip: If your system hangs or fails to boot because of
overclocking, simply use <Home> key to restore the
default setting 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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AAKK7777--88XX // AAKK7777--88XXNN OOnnlliinnee MMaannuuaall
SSuuppppoorrtteedd CCPPUU FFrreeqquueennccyy
Core Frequency = CPU Bus Clock * CPU Ratio PCI Clock = CPU Bus Clock / Clock Ratio
AGP Clock = PCI Clock x 2 EV6 Bus Speed = CPU external bus clock x 2
CPU CPU Core Frequency EV6 Bus Clock Ratio
Athlon 1G 1GHz 200MHz 10.0x
Athlon 1.1G 1.1GHz 200MHz 11.0x
Athlon 1.2G 1.2GHz 200MHz 12.0x
Athlon 1.3G 1.3GHz 200MHz 13.0x
Athlon 1G 1GHz 266MHz 7.5x
Athlon 1.13G 1.13GHz 266MHz 8.5x
Athlon 1.2G 1.2GHz 266MHz 9.0x
Athlon 1.33G 1.33GHz 266MHz 10.0x
Athlon 1.4G 1.4GHz 266MHz 10.5x
AthlonXP 1500+ 1.3GHz 266MHz 10.0x
AthlonXP 1600+ 1.4GHz 266MHz 10.5x
AthlonXP 1700+ 1.46GHz 266MHz 11.0x
AthlonXP 1800+ 1.53GHz 266MHz 11.5x
AthlonXP 1900+ 1.6GHz 266MHz 12.0x
AthlonXP 2000+ 1.667GHz 266MHz 12.5x
AthlonXP 2100+ 1.73GHz 266MHz 13x
AthlonXP 2200+ 1.80GHz 266MHz 13.5x
AthlonXP 2400+ 2.0GHz 266MHz 15x
AthlonXP 2600+ 2.13GHz 266MHz 16x
AthlonXP 2700+ 2.16GHz 333MHz 13x
AthlonXP 2800+ 2.25GHz 333MHz 13.5x
Duron 800 800MHz 200MHz 8.0x
Duron 850 850MHz 200MHz 8.5x
Duron 900 900MHz 200MHz 9.0x
Duron 950 950MHz 200MHz 9.5x
Duron 1G 1GHz 200MHz 10.0x
Duron 1.1G 1.1GHz 200MHz 11.0x
Note: With CPU speed changing rapidly, there might be fastest CPU on
the market by the time you received this installation guide. This table is
kindly for your references only.
Note: This motherboard support
CPU auto-detection function.
Hence, you don’t need to setup
the CPU frequency manually.
Warning: To avoid possible CPU
damage caused by overheating,
CPU Overheat Protection circuit
had been especially designed on
this motherboard. System would
be automatically power off when
this motherboard detected a CPU
temperature above 97 degree.
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AAKK7777--88XX // AAKK7777--88XXNN OOnnlliinnee MMaannuuaall
AAOOppeenn ““WWaattcchh DDoogg TTiimmeerr””
With this motherboard, AOpen provides a very special, useful feature for overclockers. When you
power-on the system, the BIOS will check last system POST
BIOS will enable “Watch Dog Timer” function immediately, and set the CPU FSB
user’s setting that stored in the BIOS. If system failed in BIOS POST, the “Watch Dog Timer” will
reset the system to reboot in five seconds. Then, BIOS will detect the CPU’s default frequency
and POST again. With this special feature, you can easily overclock your system to get higher system performance without
removing the cover of system housing, and be able to set the jumper to clear CMOS data when your system hanged.
AOpen
Watch Dog
Timer
Enable/Disable Signal
from BIOS
Countdown about
5 seconds if fails
in POST
Reset Signal
Clock Generator
status. If POST succeeded, the
frequency by
BIOS
CPU ID Signal
CPU
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