VIA Technologies VIA KT266A ChipsetMotherboard User manual

VIA KT266A Chipset
Motherboard
USER’S MANUAL
AMD Duron/Athlon Socket A CPU

VIA KT266A Chipset Motherboard
SupportingAMDSocketADuron/Athlon/AthlonXPSeriesProcessors
100/133 MHz Front Side Bus Frequency
AGP 4X
VIA®KT266A Chipset
Welcome!
Congratulationsonyourpurchaseofthisgreatvaluemotherboardwithitsrangeofspecialfeatures
andinnovativeonboardfunctionsbuiltaroundtheadvancedarchitectureofthenewVIA®KT266A
Chipset. More details will follow later in this manual.
Your User’s Manual
ThisUser’sManualisdesignedtohelp endusersandsystemmanufacturerstosetupandinstall
themotherboard. Alloftheinformationwithinhasbeencarefullycheckedforaccuracy. However,
the manufacturer is not responsible or liable for any errors or inaccuracies, which this manual
may contain. This includes references to products and software. In addition, the information
and specifications are subject to change without prior notice.
Disclaimer
This manual is provided “as is” without any warranty of any kind, either expressed or implied,
including, but not limited to, conditions of merchantability or fitness for a particular purpose.
Trademarks
Allbrands,productnames, and trademarksmentionedinthisdocument arethepropertyoftheir
respective owners or companies and are used solely for identification or explanation.
Copyright
Thismanualmaynot,inwholeorinpart,bephotocopied,reproduced,transcribed,translated,or
transmittedinany formorlanguagewithouttheprior writtenconsentofthemanufacturer, except
forcopiesretainedbythepurchaserforpersonalarchivingpurposes.
ManualVersion: 1.0
Release Date: December 2001

BIOS Upgrading Utility and Motherboard
Shield
BIOS Upgrading Utility—One Click is All it Takes!
We are proud to inform you that your new motherboard comes with a BIOS upgrading and
motherboard protection utility.This BIOS updating program makes BIOS updating easy, and
enhances the security and stability of systems built with your motherboard.
BIOS Upgrading Utility Features:
•Anti-VirusBIOSProtection–Thismotherboardcomeswithanewhardwaremonitoring
functionthat can prevent any unauthorized BIOSupdating caused by viruses. Only
this BIOS upgrading utility can update the BIOS for this motherboard.
•BIOSUpdatingConfidence – Beyond preventing viruses, the BIOS upgrading utility
allowsBIOSupdatingwithconfidence. Inthepast,anyfailureorincorrectoperation
during BIOS updating could crash the whole system. Normally the user wouldn’t
havethecapabilitytoretrieveand reestablish the system, they could only return the
computer to the supplier for costly, time-consuming repairs. With the enhanced
security of this BIOS upgrading utility, users of this motherboard can completely
avoid these problems. No matter what happens during BIOS updating, the user’s
system can still boot from the floppy drive, allowing the updating command to be
executedagain.
•One-Click, Online BIOS Updating – For users of Windows 9X/Me/2000/XP/NT 4.0,
theBIOSupgradingutilityallowsyoutouseaninnovativeonlineupdatingtechnology.
Just one click can detect the BIOS version of your system, download the latest
version, and execute all the updating commands automatically from the Internet.
Restartingthe computer completes the BIOS updating. This featureshould be very
handy for users who need to update BIOS repeatedly, especially MIS staff. The
onlineBIOSupdatingprogramisincludedonthe driversCD-ROMincludedinthebox
withyourmotherboard. Followingthestep-by-stepinstructions,youcaneasily update
or backup your BIOS. (If you have a different OS, see “Chapter 4 BIOS Upgrade”
for your BIOS updating procedure.)
•LinearOverclocking – the BIOS upgrading utility also provides a linear overclocking
function. Users can fine-tune the Front Side Bus (FSB) by increasing or reducing it
by as little as 1.0MHz to find the optimum FSB setting for the system. Should the
FSBbesettoohigh, thesystemcanbereturnedto the defaultsettingbypressingthe
“INS” key.

TableofContents
CHAPTER 1 INTRODUCTION 1
1.1 EssentialHandlingPrecautions.......................................................................... 1
1.2 Checklist: Hardware Required for Setup........................................................... 2
1.3 PackageContents ............................................................................................. 3
1.4 SpecificationsandFeatures............................................................................... 3
CHAPTER 2 HARDWARE INSTALLATION 5
2.1 VIAKT266AChipsetMotherboard..................................................................... 5
2.2 LayoutofVIAKT266AChipsetMotherboard...................................................... 6
2.3 CPUInstallation ................................................................................................. 7
2.4 100/133MHz SystemConfiguration .................................................................... 8
2.5 ClearCMOSJumper ......................................................................................... 9
2.6 SuspendToRAMSetting ................................................................................... 9
2.7 Keyboard Wake Up............................................................................................ 9
2.8 MemoryConfiguration...................................................................................... 10
2.9 Primary/SecondaryIDEConnectors................................................................. 11
2.10 FloppyDiskDriveConnector ........................................................................... 12
2.11 FanPowerConnectors .................................................................................... 12
2.12 Wake-on-LANConnector ................................................................................. 13
2.13 Wake-on-ModemConnector ............................................................................ 13
2.14 IrDA-CompliantInfraredModule Connector ...................................................... 14
2.15 PowerConnector ............................................................................................. 14
2.16 PanelConnectors ............................................................................................ 15
2.17 InternalAudioConnectors ................................................................................ 16
2.18 ExternalBack Panel I/OPorts .......................................................................... 17
2.19 InternalUSBPortConnectors........................................................................... 18

CHAPTER 3 BIOS SETUP 20
3.1 BIOS Setup........................................................................................................20
3.2 The MainMenu ..................................................................................................20
3.3 Standard CMOS Features .................................................................................22
3.4 Advanced BIOS Features ..................................................................................25
3.5 Advanced Chipset Features ...............................................................................28
3.6 IntegratedPeripherals........................................................................................33
3.7 Power Management Setup.................................................................................38
3.8 PnP/PCI Configuration Setup .............................................................................42
3.9 PC Health Status................................................................................................44
3.10 Frequency/Voltage Control.................................................................................45
3.11 Load Fail-Safe Defaults .....................................................................................46
3.12 LoadOptimized Defaults....................................................................................47
3.13 SupervisorPassword.........................................................................................47
3.14 User Password ..................................................................................................48
3.15 Save & Exit Setup ..............................................................................................49
3.16 ExitWithoutSaving ............................................................................................49
CHAPTER 4 BIOS UPGRADE 50
4.1 How to Upgrade Your Motherboard BIOS..........................................................50

1INTRODUCTION
CHAPTER 1 INTRODUCTION
1.1 Essential Handling Precautions
IMPORTANT. Read this section before unpacking your motherboard!
••
••
•Power Supply
Becareful! Alwaysensurethatthecomputerisdisconnected from the powersupply
when working on the motherboard and its components. On the motherboard are 2
LEDs. One is green and indicates that the power connector is attached and the
system is in Standby, with 5V of power active to the motherboard. The other is red
and indicates that the system is in Suspend Mode. Serious damage could occur if
you remove or install any components when the green LED is lit; while additionally,
you could experience a nasty shock if you touch anything inside the case when the
red LED is lit.
•Static Electricity
Static electricity may cause damage to the delicate integrated circuit chips on your
motherboard. Before handling the motherboard outside of its protective packaging,
ensure that there is no static electric charge in your body. A static discharge strong
enough to damage computer components is not perceptible by a human. Observe
theseprecautionswhilehandlingthemotherboard and other computercomponents:
1. If possible, wear an anti-static wrist strap connected to a natural earth ground.
2. Touch a grounded or anti-static surface, or a metal fixture such as a pipe or the
chassis of your system, before touching the motherboard.
3. When you have removed the motherboard from its anti-static packaging, try to
hold it only by the edges, without touching any components.
4. Avoid contacting the components on add-on cards, motherboards, and modules
with the gold-colored connectors which plug into the expansion slots.
5. Handle system components only by their mounting brackets.
6. Keep components which are not connected to the system in their anti-static
packagingwheneverpossible.

1.2 Checklist: Hardware Required for Setup
Itisadvisabletohavealloftheseitemsofhardwareavailablebeforeyouunpackyourmotherboard
from its anti-static packaging and start building your system.
−−
−−
−Computer case and chassis with appropriate power supply
−−
−−
−Monitor
−−
−−
−Socket A Central Processing Unit (CPU) and CPU fan
−−
−−
−DIMM memory module(s)
−−
−−
−PS/2 or USB Keyboard
−−
−−
−PS/2 or USB Mouse
−−
−−
−HardDiskDrive
−−
−−
−Floppy Disk Drive
−−
−−
−CD-ROMDrive
−−
−−
−(Optional) External Peripherals: printer, speakers, plotter, modem
−−
−−
−(Optional) Internal Peripherals: modem, LAN cards
INTRODUCTION 2
••
••
•Battery Replacement
The battery which holds the system settings memory (CMOS RAM) on your
motherboard should not require replacement for at least five years, and probably
much longer. In picture 2.1, it is located near the lower edge of the motherboard.
Incorrectcomputertimeand/orlossoftimemay indicateaweakmotherboard battery.
Pleasereplaceyourbatteryonlywiththesametype,orasimilartype recommended
by the battery manufacturer. If the battery is replaced incorrectly, there is a risk of
ashortcircuitorexplosion. Usedbatteriesshould be disposed ofinaccordancewith
themanufacturer’s instructions andlocalenvironmentalregulations.

3INTRODUCTION
1.3 Package Contents
Thismotherboardpackage should contain the following items. Please check them as soonas
you unpack. If you find any damaged or missing items, please contact your retailer.
−−
−−
−VIAKT266AChipsetmotherboard
−−
−−
−1 x CD-ROM
−−
−−
−1 x FDD cable
−−
−−
−1 x Ultra DMA/66/100 cable
−−
−−
−User’sManual
1.4 Specifications and Features
••
••
•CPU
−−
−−
−SupportsAMDDuron/Athlon/AthlonXP,SocketACPUs
••
••
•Chipset
−−
−−
−North Bridge: VIA KT266A
− −
− −
− South Bridge: VIA VT8233/VT8233A
••
••
•DRAMMemory
−−
−−
−Supports DDR Memory
−−
−−
−3 x 184pin DIMM module slots onboard
−−
−−
−8MB~3GB memory capacity
−−
−−
−8/16/32/64/128/256/512MB DDR DRAM
−−
−−
−64 data bits structure only
−−
−−
−PC1600/PC2100DDRDRAM
••
••
•I/O BUS Slot
−−
−−
−1 x AGP slot
−−
−−
−5 x Master/Slave PCI slots (PCI 2.2 compliant)
••
••
•I/O Functions
−−
−−
−Supports PIO Mode 3, 4 ATAPI devices and Ultra DMA 33/66/100/133 EIDE
(Only VT8233A South Bridge supports Ultra DMA 133)
−−
−−
−Supports 2 high speed UART 16550 COM ports

INTRODUCTION 4
− −
− −
− Supports 1 SPP/EPP/ECP LPT port
− −
− −
− Supports 2 1.44/2.88 MB floppy disk drive(s)
−−
−−
−Supports PS/2 Mouse and PS/2 Keyboard
−−
−−
−Supports 1 IrDA port
−−
−−
−Supports 6 Universal Serial Bus (USB) ports(VIA VT8233A South Bridge only
supports 4 USB ports)
−−
−−
−Supports Line-out, Line-in, and MIC-in jacks.
−−
−−
−Supports 1 Game/MIDI port
•Build-in AC97 CODEC
−−
−−
−AC97 2.1 Compliant
•Award BIOS
−−
−−
−Supports Plug and Play, PC99
−−
−−
−Supports ACPI, APM, DMI and Green Features
•Wakeup Features
−−
−−
−SupportsWake-on-LANfunction
−−
−−
−RemoteRingWakeup
−−
−−
−TimeWakeup
• Other Features
−−
−−
−Year 2000 compliant
−−
−−
−Anti-VirusBootup
−−
−−
−System voltage monitors for CPU Vcore, VDDQ, +3.3V, +5V, +12V, -12V, -5V,
VBAT(V) and 5VSB(V)
−−
−−
−CPUtemperaturemonitor
−−
−−
−System temperature monitor
−−
−−
−FANspeedmonitors
•PCB Dimensions
−−
−−
−ATX form factor, 4-layer PCB, 22 cm x 30.5 cm (8.5 in. x 12 in.)

CHAPTER 2 HARDWARE INSTALLATION
2.1 VIA KT266A Chipset Motherboard
5HARDWARE INSTALLATION
WOL Header
Wake-on-LAN
·
USB Connectors
·
4 x USB Ports
AC97 CODEC
·
AC97 Audio CODEC
FDD Connector
Memory
3 x 184pin DIMM Sockets
·
8MB~3GB DDR
·
I/O Port
·
·
2 x USB Ports
·
2x COM Ports & 1 x Parallel Port
·
PS/2 KB Port & PS/2 Mouse Port
GAME/MIDI Port & Audio Jacks
(Line-In, Line-Out, MIC-In)
IrDA
WOM Header
·
Wake-on-Modem
Flash EEPROM
·
Award BIOS
PnP, DMI
ACPI compliant
·
·
South Brid
g
e
Power LED
Green: Standb
y
·
LPC Super I/O
·
Winbond 83627SF
CPU
·
AMD Duron/Athlon/
Athlon XP Socket A CPU
Audio Connectors
Expansion Slots
··
5 x PCI Slots
··
1 x AGP Slot
PCI IDE Connectors
DMA Mode 2
·
Bus Master
·
·
PIO Mode 3/4
·
·
Ultra DMA 33/66/100/
133(VT8233A onl
y
)
·
North Brid
g
e
VIA KT266A
·
VIA KT8233/8233A
·