AOpen AK77333 User Manual
AAKK7777--333333 OOnnlliinnee MMaannuuaall
Overview
AK77-333
DOC. NO.: AK77333-OL-E0205C
1
Installation
Hardware
Drivers &
Utilities
BIOS Setup
AWARD
Glossary
Troubleshooting &
Technical Support
AAKK7777--333333 OOnnlliinnee MMaannuuaall
WWhhaatt’’ss iinn tthhiiss mmaannuuaall
AK77-333..........................................................................................................................................1
What’s in this manual ......................................................................................................................................................2
You Must Notice ..............................................................................................................................................................8
Before You Start..............................................................................................................................................................9
Overview .......................................................................................................................................................................10
Feature Highlight...........................................................................................................................................................11
Quick Installation Procedure..........................................................................................................................................15
Motherboard Map ..........................................................................................................................................................16
Block Diagram ...............................................................................................................................................................17
Hard war e Ins tal lat ion..................................................................................................................18
Clear CMOS Data ..........................................................................................................................................................19
CPU Installation ............................................................................................................................................................. 20
JP21 FSB/PCI Clock Ratio ............................................................................................................................................22
CPU Jumper-less Design............................................................................................................................................... 23
CPU and Housing Fan Connector (with H/W Monito ring) ...............................................................................................2 8
DIMM Sockets ...............................................................................................................................................................29
System and RAM Power Indicate LED ...........................................................................................................................31
Front Panel Connector ..................................................................................................................................................32
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ATX Power Connector ...................................................................................................................................................33
AC Power Auto Recovery ..............................................................................................................................................34
IDE, Floppy Connector ..................................................................................................................................................35
S/PDIF (Sony/Philips Digital Interface) Connector.........................................................................................................37
Super 5.1 Channel Audio Effect.....................................................................................................................................38
IrDA Connector ..............................................................................................................................................................39
WOM (Zero Voltage Wake on Modem) Connector.........................................................................................................40
WOL (Wake on LAN).....................................................................................................................................................4 3
AGP (Accelerated Graphic Port) Expansion Slot ........................................................................................................... 45
CNR (Communication and Network Riser) Expansi on Slot ............................................................................................46
PC99 Color Coded Back Panel......................................................................................................................................47
Support 2
Support 3rd and 4
Chassis Intrusion Sensor...............................................................................................................................................50
CD Audio Connector......................................................................................................................................................51
AUX-IN Connector.........................................................................................................................................................52
Front Audio Connector...................................................................................................................................................53
Die-Hard BIOS (100% Virus Protection, Upgrad e Optional) ...........................................................................................54
Dr. LED Connector (Upgrade Optional).........................................................................................................................57
nd
USB Port.....................................................................................................................................................48
th
USB2.0 Ports (Optional)..................................................................................................................49
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Battery-less and Long Life Design.................................................................................................................................59
Over-current Protection .................................................................................................................................................60
Hardware Monitoring .....................................................................................................................................................61
Resettable Fuse ............................................................................................................................................................62
2200μF
Layout (Frequency Isolation Wall) .................................................................................................................................64
Fansink on North Bridge................................................................................................................................................65
Low ESR Capacitor......................................................................................................................................... 63
Driver and Utility..........................................................................................................................66
Auto-run Menu from Bonus CD Disc..............................................................................................................................67
Installing Windows 95....................................................................................................................................................68
Installing Windows 98....................................................................................................................................................69
Installing Windows® 98 SE, Windows® ME & Wi n dow s
Installing VIA 4 in 1 Driver............................................................................................................................................. 7 1
Installing Onboard Sound Driver....................................................................................................................................72
Installing Hardware Monitoring Uti lity ............................................................................................................................73
Installing USB2.0 Driver (Optiona)................................................................................................................................. 74
ACPI Suspend to Hard Drive......................................................................................................................................... 77
ACPI Suspend to RAM (STR)........................................................................................................................................82
®
2000......................................................................................... 70
AWARD BIOS ................................................................................................................................84
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How To Use Award™ BIOS Setup P rogr am...................................................................................................................85
How To Enter BIOS Set up .............................................................................................................................................87
BIOS Upgrade under Windows environment..................................................................................................................88
Overclocking ................................................................................................................................90
VGA Card & Hard Disk ..................................................................................................................................................91
Glossary .......................................................................................................................................9 2
AC97 .............................................................................................................................................................................92
ACPI (Advanced Configuratio n & Power Interfac e) ........................................................................................................92
AGP (Accelerated Graphic Port)....................................................................................................................................92
AMR (Audio/Modem Riser)............................................................................................................................................93
AOpen Bonus Pack CD .................................................................................................................................................93
APM (Advanced Power Management)........................................................................................................................... 93
ATA (AT Attachment) ...................................................................................................................................................... 93
ATA/66........................................................................................................................................................................... 93
ATA/100 ......................................................................................................................................................................... 94
BIOS (Basic Input/Output Sys tem) ................................................................................................................................ 94
Bus Master IDE (DMA mode).........................................................................................................................................94
CNR (Communication and Networki ng Riser)................................................................................................................94
CODEC (Coding and Decoding) ....................................................................................................................................95
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DDR (Double Data Rate) SDRAM..................................................................................................................................95
DIMM (Dual In Line Memory Module) ............................................................................................................................95
DMA (Direct Memory Access) ........................................................................................................................................ 95
ECC (Error Checking and Correction)............................................................................................................................96
EDO (Extended Data Output) Memory...........................................................................................................................96
EEPROM (Electronic Erasable Programmab le ROM)....................................................................................................96
EPROM (Erasable Programmabl e ROM).......................................................................................................................96
EV6 Bus ........................................................................................................................................................................97
FCC DoC (Declaration of Conformity)............................................................................................................................ 97
FC-PGA (Flip Chip-Pin Grid Array) ................................................................................................................................97
Flash ROM ....................................................................................................................................................................97
FSB (Front Side Bus) Clock ...........................................................................................................................................9 8
2
I
C Bus ..........................................................................................................................................................................98
IEEE 1394 .....................................................................................................................................................................98
Parity Bit........................................................................................................................................................................99
PBSRAM (Pipelined Burst S RAM) .................................................................................................................................99
PC-100 DIMM ................................................................................................................................................................ 99
PC-133 DIMM ................................................................................................................................................................ 99
PC-1600 or PC-2100 DDR SDRAM.............................................................................................................................100
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PCI (Peripheral Component Interface) Bus.................................................................................................................. 10 0
PDF Format.................................................................................................................................................................100
PnP (Plug and Play) ....................................................................................................................................................100
POST (Power-On Self Test).........................................................................................................................................101
RDRAM (Rambus DRAM)............................................................................................................................................101
RIMM (Rambus Inline Memory Module)....................................................................................................................... 1 01
SDRAM (Synchronous DRAM) ....................................................................................................................................101
Shadow E
SIMM (Single In Li ne M emory Mod ule)........................................................................................................................ 1 02
SMBus (System Management Bus) .............................................................................................................................102
SPD (Serial Presence Detect ) .....................................................................................................................................102
Ultra DMA .................................................................................................................................................................... 1 03
USB (Universal Serial B us) ..........................................................................................................................................103
VCM (Virtual Channel Memory)................................................................................................................................... 10 4
ZIP file.........................................................................................................................................................................104
2
PROM ........................................................................................................................................................102
Troubleshooting......................................................................................................................... 1 0 5
Technical Support......................................................................................................................10 9
Product Registration..................................................................................................................11 2
How to Conta ct Us.....................................................................................................................113
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YYoouu MMuusstt NNoottiiccee
Adobe, the Adobe logo, Acrobat is trademarks of Adobe Systems Incorporated.
AMD, the AMD logo, Athlon and Duron are trademarks of Advanced Micro Devices, Inc.
Intel, the Intel logo, Intel Celeron, Pentium II, Pentium III are trademarks of Intel Corporation.
Microsoft, Windows, and Windows logo are either registered trademarks or trademarks of Microsoft Corporation in the United
States and/or other countries.
All product and brand names used on this manual are used for identification purposes only and may be the registered
trademarks of their respective owners.
All of the specifications and information contained in this manual are subject to change without notice. AOpen reserves the right
to revise this publication and to make reasonable changes. AOpen assumes no responsibility for any errors or inaccuracies that
may appear in this manual, including the products and software described in it.
This documentation is protected by copyright law. All rights are reserved.
No part of this document may be used or reproduced in any form or by any means, or stored in a database or retrieval
system without prior written permission from AOpen Corporation.
Copyright
©
1996-2000, AOpen Inc. All Rights Reserved.
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AAKK7777--333333 OOnnlliinnee MMaannuuaall
BBeeffoorree YYoouu SSttaarrtt
This Online Manual will introduce to the user how this product is installed. All useful information will be described in later
chapters. Please keep this manual carefully for future upgrades or system configuration changes. This Online Manual is saved
in PDF format
get free download from Adobe web site
Although this Online Manual is optimized for screen viewing, it is still capable for hardcopy printing, you can print it by A4 paper
size and set 2 pages per A4 sheet on your printer. To do so, choose File > Page Setup and follow the instruction of your printer
driver.
Thanks for the help of saving our earth.
, we recommend using Adobe Acrobat Reader 4.0 for online viewing, it is included in Bonus CD disc or you can
.
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AAKK7777--333333 OOnnlliinnee MMaannuuaall
OOvveerrvviieeww
Thank you for choosing AOpen AK77-333. The AK77-333 is AMD® Socket 462 motherboard (M/B) based on the ATX form factor
featuring the VIA Apollo KT333 chipset
Athlon™ & Duron™ processor and 200/266MHz EV6
AGP /4X mode and pipelined spilt-transaction long burst transfer up to 1056MB/sec. With high bandwidth 200/266MB/s 8-bit
V-Link Host Controller, DDR266(PC2100)
maximum memory size can be up to 3GB. The on-board IDE controller supports Ultra DMA
rate up to 133MB/s. Further flexibility can be
achieved by taking advantage of the
Communication and Network Riser (CNR)
option that allows audio and modem configuration
on a single baseboard design. Besides, the
AK77-333 has an AC97
chipset onboard for provides high performance and
magic surround stereo sound to let people enjoy
working with it. More than that, this motherboard
supports USB 2.0 function (USB3 and USB4 only,
optional) with a fancy speed up to 480Mbps. Now,
enjoy all features from AOpen AK77-333.
. As high performance chipset built in the M/B, the AK77-333 AMD® Socket 462 series
system bus. In the AGP performance, it has one AGP slot and supports
and DDR333(PC2700) DDR SDRAM can be applied to the AK77-333 and the
66/100/133 mode and the transfer
card
CODEC Realtek ALC650
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AAKK7777--333333 OOnnlliinnee MMaannuuaall
FFeeaattuurree HHiigghhlliigghhtt
CPU
Supports AMD® Socket 462 series CPU with both 200MHz and 266MHz EV6 Bus designed for Socket 462 technology.
Athlon: 600MHz~1.4GHz
Duron: 600MHz~1.2GHz
AthlonXP: 1500+(1.3GHz)~2000+(1.667GHz)
Chipset
The VIA Apollo KT333 consists of the KT333 V-Link DDR Host system controller and the VT8233A 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 VT8233A V-Link Client controller is a highly integrated
PCI/LPC controller. Its internal bus structure is based on 66MHz PCI bus that provides 2x bandwidth compare to previous
generation PCI/ISA bridge chips. The VT8233A integrated Client V-Link controller with 200/266MB/s bandwidth between
Host/Client V-Link interface, provides a V-Link-PCI and V-Link-LPC controller. Of five PCI slots provided, AK77-333 supports all
five master PCI slots with arbitration and decoding for all integrated functions and LPC bus.
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 five 32-bit/33MHz PCI, one CNR and one AGP 4X slots. The PCI local bus throughput can be up to 132MB/s. The
Communication & Nectworking Riser (CNR)
The Accelerated Graphics Port (AGP)
video cards support data transfer rate up to 1056MB/s. As AK77-333 includes one AGP expansion slot for a bus mastering AGP
graphic card, For AD and SBA signaling, AK77-333 can support 133MHz 2X/4X mode. Of five PCI slots provided, AK77-333
supports four master PCI sl ots for arbi trat ion and decodi ng func tions and one s lave PCI slot .
slot provided from AK77-333 can support CNR interface for a Modem/Audio card.
specification provides a new level of video display sophistication and speed. The AGP
Memory
With VIA Apollo KT333 chipset, the AK77-333 can support Double-Data-Rate (DDR) SDRAM. The DDR S DRAM i nte rfac e all ows
zero wait state bursting between the SDRAM and the data buffers at 266/333MHz. The six banks of DDR SDRAM can be
composed of an arbitrary mixture of 1M/2M4M/8M/16M/32M/64MxN DDR SDRAM and maximum up to 3GB. The AK77-333
allows DDR SDRAM to run at either synchronous or pseudo-synchronous mode with the host CPU bus frequency
(266/333MHz).
On-board AC97 Sound
AK77-333 uses the AC97 CODEC Realtek ALC650 chip, which supports high quality of 5.1 Channel audio effects. This on-board
audio includes a complet e audio rec ording and playbac k s yst em .
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Eight USB Connectors (3rd and 4th connector are USB2.0, optional)
Provides four ports, eight USB connectors for USB interface devices, such as mouse, keyboard, modem, scanner, etc. The
onboard 1
power mode and wake-up specification. While, the 3
which is 40 times faster than the traditional one
st
and 2nd USB Host controller are fully compliant with USB UHCI 1.1 specification that can fully compatible with low
rd
and 4th connector support USB2.0 have a fancy speed up to 480Mbps
1MHz Stepping Frequency Adjustment
Provides “1MHz Stepping Frequency Adjustment” function in the BIOS. This magic function allows you adjust CPU FSB
frequency from 100~248 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 (Upgrade 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 (Upgrade Optional)
The Dr. LED has 8 LEDs on AK77-333, which can easily show what kind of problem you may encounter.
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Power Management/Plug and Play
The AK77-333 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
problems, thus making the system much more user-friendly.
, which helps saving users from configuration
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 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 AK77-333 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
10. Insta lli ng O pe rat in g Sys tem (s uch as W ind ows 98 )
11. Installing Driver and Utility
15
A
A
A
A
(
r
r
r
r
r
r
r
r
r
d
(Op
)
r
AAKK7777--333333 OOnnlliinnee MMaannuuaall
CD-IN Connector
Front Audio Connector
Onboard AC97 CODEC
Realtek ALC650
S/PDIF Connecto
JP30 Die Hard BIOS
Select Jumper
Die Hard BIOS with 100% Virus
Protection (Upgrade Optional)
Green: AUX-IN Connecto
CNR Expansion Slot
32-bit PCI Expansion Slot x5
2nd USB V1.1 Port Connector
JP14 CMOS Data Clear Jumper
(PCI 5 supports slave mode
PCI card only)
IrDA Connecto
WOM (Wake ON Modem)
r
3
and 4th USB V2.0 Port
WOL (Wake ON LAN)
FAN3 Connecto
with H/W Monitoring
Front Panel Connecto
Connecto
Connector
Dr. LED Connecto
(Upgrade Optional)
System & RAM Power
Indicate LED
Chassis Intrusion Senso
tional
Connecto
Connecto
Motherboard Map
16
PC99 Colored Back Panel
Resetable Fuse
CPU Fan Connector with
H/W Monitoring
TX Power Connector
FAN3 Connector
GP 4x Expansion Slot
462-pin CPU Socket with
Voltage and Frequency
uto-Detection that supports
MDTM AthlonTM / DuronTM /
TM
and Athlon
SW1 CPU Ratio Select Switch
VIA® Apollo KT333
Chipset with FANsink and
VT8233A SB
ATA100/133 supported)
JP21 FSB Select Jumper
184-pin DIMMx3 supports
DDR333/DDR266
(Max. to 3B)
IDE Connector x 2
(ATA/66/100/133 supported)
FDD Connector
XP
AAKK7777--333333 OOnnlliinnee MMaannuuaall
BBlloocckk DDiiaaggrraamm
Socket 462
AMD
Athlon/D uron
CPU
100/133MHz
System Bus
PC2100/PC2700 DDR
SDRAM Up to 3GB
DDR SDRAM Socket x3
VIA KT333
AGP Bus
AGP 4X Slot
Floppy Disk Drive x2
PCI Bus
1stUSB Port
2ndUSB Port
3rdUSB Port
4thUSB Port
USB connector x8
32-bit P CI Slot x5
ATA
66/100/133
Primary
Channel
Secondar y
Channel
VT8233A
IDE Dri ve x4
AC’97 Link
Audio CODEC
Modem CODEC
CNR Slot
2MBit Flash EEPROM
Parallel Port
Serial Port x2
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HHaarrddwwaarree IInnssttaallllaattiioonn
This chapter describes jumpers, connectors and hardware devices of this motherboard.
Note: E lectrostatic 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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Pin 1
1
Clear CMOS
Tip: W hen should I Clear CMOS?
1. Boot fa il bec aus e of ove rc lock i ng…
2. Forget password…
3. Troubleshooting…
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.
1
Normal Operation
(default)
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AAKK7777--333333 OOnnlliinnee MMaannuuaall
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.
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
20
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AAKK7777--333333 OOnnlliinnee MMaannuuaall
3. Press down the CPU socket lever and finish
CPU installation.
Note: This picture is for example only, it may not exactly be the same motherboard.
CPU cut edge
Note: If you do not match the CPU
socket Pin 1 and CPU cut edge well, it
ma
damage the CPU.
21
(
AAKK7777--333333 OOnnlliinnee MMaannuuaall
JJPP2211 FFSSBB//PPCCII CClloocckk RRaattiioo
This jumper is used to specify the relationship of PCI and FSB clock. Generally speaking, if you are not overclockers, we
recommend you to set it to the default setting. Additionally, this motherboard also provides “1MHz Stepping Adjustment”
feature for overclockers to adjust CPU FSB frequency via BIOS setup program. Based on the CPU type, the adjustment range
has two levels: 100~129 (FSB=100, such as Athlon 800), 130~248 (FSB=133, such as Athlon 1000) MHz for your choosing. You
may also choose a specific FSB frequency ranging from 100~117 (say, 105, 110, 115 for example) and 120~156 with reference
to a frequency table in BIOS setup program. If you fix t he CPU FSB frequency by JP21, the “1MHz Stepping Adjustment” range
will be changed and following your JP21 setting.
-
SW1 CPU Ratio
Select Switch
+
1
2
3
4
1 2 3
FSB=100
CPU Ratio SW1-1 SW1-2 SW1-3 SW1-4
5
5.5
6
6.5
7
7.5
8
8.5
9
9.5
10
10.5
11
11.5
12
12.5
CPU Default 0 0 0 0
－－＋－
＋－＋－
－＋＋－
＋＋＋－
－－－＋
＋－－＋
－＋－＋
＋＋－＋
－－＋＋
＋－＋＋
－＋＋＋
＋＋＋＋
－－－－
＋－－－
－＋－－
＋＋－－
FSB=133
Default)
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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
AMD
Socket A CPU
CPU VID signal
Power Regulator
(A utomatically generates CPU voltage)
CPU Freq. Ratio
CPU voltage
Clock
Generator
BIOS
Controlled
Circuit
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FFuullll--rraannggee AAddjjuussttaabbllee CCPPUU CCoorree VVoollttaaggee
This function is dedicated to overclockers, AOpen works together with Fairchild t o develop a special chip FM3540 that s upports
Adjustable CPU Core Voltage from 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.
BIOS Setup > Frequency/Voltage Control > CPU Speed Setting
CPU Ratio
CPU FSB
(By BIOS Table)
CPU FS B
(By manual Adjustment)
From 5.5x to 12.5x step 0.5x
100, 102, 105, 108, 110, 113, 115, 117, 120, 122, 124, 133, 136,
138, 140, 142, 144, 147, 152, 154, and 156MHz.
FSB=100, 100~129 by 1MHz stepping adjustment technology
FSB=133, 130~248 by 1MHz stepping adjustment technology
Home
y
Warning: VIA® Apollo KT333 chipset supports 133MHz
FSB (with performance reaches maximum 266MHz EV6
system bus) and 66MHz AGP clock, higher clock setting
may cause serious system damage.
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--333333 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 Clo ck 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+ 1.3GH z 266MHz 10.0x
AthlonXP 1600+ 1.4GH z 266MHz 10.5x
AthlonXP 1700+ 1.46GHz 266MHz 11.0x
AthlonXP 1800+ 1.53GHz 266MHz 11.5x
AthlonXP 1900+ 1.6GH z 266MHz 12.0x
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: This motherboard support
CPU auto-detection function.
Hence, you don’t need to setup
the CPU frequency manually.
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AAKK7777--333333 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
the CPU FSB
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.
frequency by user’s setting that stored in the BIOS. If system failed in BIOS POST, the “Watch Dog Timer” will
AOpen
Watch Dog
Timer
status. If it succeeded, the BIOS will enable “Watch Dog Timer” function immediately, and set
Enable/Disable Signal
from BIOS
Countdown about
5 seconds if fails
in POST
Reset Signal
Clock Generator
BIOS
CPU ID Signal
CPU
27
AAKK7777--333333 OOnnlliinnee MMaannuuaall
CCPPUU aanndd HHoouussiinngg FFaann CCoonnnneeccttoorr ((wwiitthh HH//WW MMoonniittoorriinngg))
Plug in the CPU fan cable to the 3-pin CPU FAN connector. If you have chassis fan, you can also plug it on System Fan (FAN2)
or AUX Fan (FAN3) (without H/W monitoring) connector.
FAN2 Connector
GND
+12V
SENSOR
FAN3 Connector
CPU Fan Connector
Note: Some CPU fans do not have
sensor pin, so that cannot support fan
monitoring.
GND
+12V
SENSOR
SENSOR
+12V
GND
28
AAKK7777--333333 OOnnlliinnee MMaannuuaall
DDIIMMMM SSoocckkeettss
This motherboard has three 184-pin DDR DIMM sockets that allow you to install PC2100 or PC2700 memory up to 3 GB. Only
Non-ECC DDR SDRAM are supported.
Warning: The AK77-333 support DDR
SDRAM, p lease do no t install the SDRAM
on the DDR SDRAM sockets. Otherwise, it
will cause serious damage on memory
sockets or SDRAM module.
DDR
SDRAM
29
AAKK7777--333333 OOnnlliinnee MMaannuuaall
HHooww ttoo IInnssttaallll MMeemmoorryy MMoodduulleess
Please follow the procedure as shown below to finish memory installation.
1. Make sure the DIMM module’s pin face down and match the socket’s size as depicted below.
2. Insert the module straight down to the DIMM slot with both hands and press down firmly until the DIMM module is securely
in place.
3. Repeat step 2 to finish additional DIMM modules installation.
Pin 1
Tab
Key
52 pins 40 pins
Note: The tabs of the DIMM slot will
close- up to hold the DIMM i n place
when the DIMM touches the slot’s
bottom.
Pin 1
30
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