VIA Technologies VIA KT266A ChipsetMotherboard, KT266A User Manual

VIA KT266A Chipset
Motherboard

USER’S MANUAL

AMD Duron/Athlon Socket A CPU

VIA KT266A Chipset Motherboard

Supporting AMD Socket A Duron/Athlon/Athlon XP Series Processors

100/133 MHz Front Side Bus Frequency
AGP 4X

VIA® KT266A Chipset

Welcome!

Congratulations on your purchase of this great value motherboard with its range of special features
and innovative onboard functions built around the advanced architecture of the new VIA® KT266A
Chipset. More details will follow later in this manual.

Your User’s Manual

This User’s Manual is designed to help end users and system manufacturers to setup and install
the motherboard. All of the information within has been carefully checked for accuracy . 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

All brands, product names, and trademarks mentioned in this document are the property of their
respective owners or companies and are used solely for identification or explanation.

Copyright

This manual may not, in whole or in part, be photocopied, reproduced, transcribed, translated, or
transmitted in any form or language without the prior written consent of the manufacturer, except
for copies retained by the purchaser for personal archiving purposes.

Manual Version: 1.0
Release Date: December 2001

BIOS Upgrading Utility and Motherboard
Shield

BIOS Upgrading Utility—One Click is All it T akes!

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-Virus BIOS Protection – This motherboard comes with a new hardware monitoring
function that can prevent any unauthorized BIOS updating caused by viruses. Only
this BIOS upgrading utility can update the BIOS for this motherboard.

• BIOS Updating Confidence – Beyond preventing viruses, the BIOS upgrading utility
allows BIOS updating with confidence. In the past, any failure or incorrect operation
during BIOS updating could crash the whole system. Normally the user wouldn’t
have the capability to retrieve and 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
executed again.

• One-Click, Online BIOS Updating – For users of Windows 9X/Me/2000/XP/NT 4.0,
the BIOS upgrading utility allows you to use an innovative online updating technology .
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.
Restarting the computer completes the BIOS updating. This feature should be very
handy for users who need to update BIOS repeatedly, especially MIS staff. The
online BIOS updating program is included on the drivers CD-ROM included in the box
with your motherboard. Following the step-by-step instructions, you can easily update
or backup your BIOS. (If you have a different OS, see “Chapter 4 BIOS Upgrade”
for your BIOS updating procedure.)

• Linear Overclocking – 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
FSB be set too high, the system can be returned to the default setting by pressing the
“INS” key.

T able of Contents

CHAPTER 1 INTRODUCTION 1

1.1 Essential Handling Precautions.......................................................................... 1

1.2 Checklist: Hardware Required for Setup........................................................... 2

1.3 Package Contents ............................................................................................. 3

1.4 Specifications and Features............................................................................... 3

CHAPTER 2 HARDW ARE INSTALLATION 5

2.1 VIA KT266A Chipset Motherboard..................................................................... 5

2. 2 Layout of VIA KT266A Chipset Motherboard...................................................... 6

2.3 CPU Installation ................................................................................................. 7

2.4 100/133MHz System Configuration .................................................................... 8

2.5 Clear CMOS Jumper ......................................................................................... 9

2.6 Suspend T o RAM Setting ................................................................................... 9

2.7 Keyboard Wake Up............................................................................................ 9

2.8 Memory Configuration ...................................................................................... 10

2.9 Primary/Secondary IDE Connectors................................................................. 11

2.10 Floppy Disk Drive Connector ........................................................................... 12

2.1 1 Fan Power Connectors .................................................................................... 12

2.12 Wake-on-LAN Connector ................................................................................. 13

2.13 Wake-on-Modem Connector ............................................................................ 13

2.14 IrDA-Compliant Infrared Module Connector ...................................................... 1 4

2.15 Power Connector ............................................................................................. 14

2.16 Panel Connectors ............................................................................................ 15

2.17 Internal Audio Connectors ................................................................................ 16

2.18 External Back Panel I/O Ports .......................................................................... 17

2.19 Internal USB Port Connectors........................................................................... 18

CHAPTER 3 BIOS SETUP 20

3.1 BIOS Setup........................................................................................................20

3.2 The Main Menu ..................................................................................................20

3.3 Standard CMOS Features .................................................................................22

3.4 Advanced BIOS Features ..................................................................................25

3.5 Advanced Chipset Features ...............................................................................28

3.6 Integrated Peripherals........................................................................................33

3.7 Power Management Setup.................................................................................38

3.8 PnP/PCI Configuration Setup .............................................................................42

3.9 PC Health Status................................................................................................44

3.10 Frequency/V oltage Control.................................................................................45

3.11 Load Fail-Safe Defaults .....................................................................................46

3.12 Load Optimized Defaults....................................................................................47

3.13 Supervisor Password.........................................................................................47

3.14 User Password ..................................................................................................48

3.15 Save & Exit Setup ..............................................................................................49

3.16 Exit Without Saving ............................................................................................49

CHAPTER 4 BIOS UPGRADE 50

4.1 How to Upgrade Your Motherboard BIOS..........................................................50

1 INTRODUCTION

CHAPTER 1 INTRODUCTION

1.1 Essential Handling Precautions

IMPORT ANT . Read this section before unpacking your motherboard!

••

• Power Supply

••

Be careful! Always ensure that the computer is disconnected from the power supply
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
these precautions while handling the motherboard and other computer components:

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
packaging whenever possible.

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.
Incorrect computer time and/or loss of time may indicate a weak motherboard battery .
Please replace your battery only with the same type, or a similar type recommended
by the battery manufacturer. If the battery is replaced incorrectly, there is a risk of
a short circuit or explosion. Used batteries should be disposed of in accordance with
the manufacturer’s instructions and local environmental regulations.

1.2 Checklist: Hardware Required for Setup

It is advisable to have all of these items of hardware available before you unpack your motherboard
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

−−

−−

− Hard Disk Drive

−−

−−

− Floppy Disk Drive

−−

−−

− CD-ROM Drive

−−

−−

− (Optional) External Peripherals: printer, speakers, plotter, modem

−−

−−

− (Optional) Internal Peripherals: modem, LAN cards

−−

3 INTRODUCTION

1.3 Package Contents

This motherboard package should contain the following items. Please check them as soon as
you unpack. If you find any damaged or missing items, please contact your retailer.

−−

− VIA KT266A Chipset motherboard

−−

−−

− 1 x CD-ROM

−−

−−

− 1 x FDD cable

−−

−−

− 1 x Ultra DMA/66/100 cable

−−

−−

− User’s Manual

−−

1.4 Specifications and Features

••

• CPU

••

−−

− Supports AMD Duron/Athlon/Athlon XP , Socket A CPUs

−−

••

• Chipset

••

−−

− North Bridge: VIA KT266A

−−

− −

− South Bridge: VIA VT8233/VT8233A

− −

••

• DRAM Memory

••

−−

− 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/PC2100 DDR DRAM

−−

••

• 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

−−

− Supports Wake-on-LAN function

−−

−−

− Remote Ring Wakeup

−−

−−

− Time W akeup

−−

•

Other Features

−−

− Y ear 2000 compliant

−−

−−

− Anti-Virus Boot up

−−

−−

− System voltage monitors for CPU Vcore, VDDQ, +3.3V, +5V, +12V, -12V, -5V,

−−

VBA T(V) and 5VSB(V)

−−

− CPU temperature monitor

−−

−−

− System temperature monitor

−−

−−

− FAN speed monitors

−−

• PCB Dimensions

−−

− ATX form factor, 4-layer PCB, 22 cm x 30.5 cm (8.5 in. x 12 in.)

−−

5 HARDWARE INSTALLATION

y

y

CHAPTER 2 HARDWARE INSTALLATION

2.1 VIA KT266A Chipset Motherboard

I/O Port

GAME/MIDI Port & Audio Jacks

·

(Line-In, Line-Out, MIC-In)

2

x COM Ports & 1 x Parallel Port

·

·

2 x USB Ports

·

PS/2 KB Port & PS/2 Mouse Port

CPU

·

AMD Duron/Athlon/
Athlon XP Socket A CPU

3 x 184pin DIMM Sockets

·

8MB~3GB DDR

·

Memory

AC97 CODEC

·

AC97 Audio CODEC

Audio Connectors

USB Connectors

4 x USB Ports

·

LPC Super I/O

Winbond 83627SF

·

IrDA

WOM Header

·

Wake-on-Modem

WOL Header

·

Wake-on-LAN

Power LED

·

Green: Standb

North Bridge

VIA KT266A

·

FDD Connector

PCI IDE Connectors

Bus Master

·

·

·

·

PIO Mode 3/4
DMA Mode 2

·

Ultra DMA 33/66/100/

·

133(VT8233A onl

)

South Bridge

VIA KT8233/8233A

·

Flash EEPROM

·

Award BIOS

·

PnP, DMI

·

ACPI compliant

Expansion Slots

5 x PCI Slots

··

1 x AGP Slot

··

HARDWARE INSTALLATION 6

y

y

(

y)

2.2 Layout of VIA KT266A Chipset Motherboard

KB MOUSE

PS/2

T:Mouse

B:Ke

USB

T:USB2
B:USB1

COMA

board

PRN

T:Top
B:Bottom

JP5

MEM-LED

PGA 462

COMB

CPU-FAN

Game+Audio

AUX

CD1

CD2

VIDEO

MODEM

SW3

Power Connector

PCI Slot 1

JUSB1

PCI Slot 2

JUSB2

VT8233 onl

PCI Slot 3

North

Bridge

AGP Slot

DIMM1 (184pin DDR Module)

South

Bridge

DIMM3 (184pin DDR Module)

DIMM2 (184pin DDR Module)

IDE1 IDE2

FDD

IRDA

SYS-FAN1

PCI Slot 4

PCI Slot 5

WOLWOM

SYS-FAN2

Lithium
Batter

JP1

JP4

Panel Connectors

STBY-LED

7 HARDWARE INSTALLATION

2.3 CPU (Central Processing Unit) Installation

All this point you should be familiar with the handling precautions; checked that you have all of the
necessary hardware for building your system; inspected the motherboard package contents
and, looked at the layout of the motherboard. This chapter will take you step-by-step through the
process of installing the different hardware devices onto your new motherboard.

Caution!

1. Remember to always make sure the system power is off before installing or
removing any devices. Check the Power Indicator LEDs on the motherboard
as shown in Figure 2.2 and described in Section 1.1.

2. Don’t forget the static electricity precautions. (See Section 1.1.)

3. Be careful! Incorrectly inserting hardware onto your motherboard can
permanently damage the motherboard.

The motherboard has a ZIF Socket 462 to house the CPU. A CPU fan is necessary to prevent
overheating. If no fan has been supplied with the CPU, purchase and install one before you turn
on your system.

Warning! CPUs generate tremendous heat while operating. Make sure to install
a CPU fan with enough heat-dissipation grease to completely cover the CPU die
before powering up the computer. Never run the processor without the heatsink
properly and firmly attached.

PERMANENT DAMAGE COULD RESUL T!

Please follow the steps below to install the CPU:

Step 1:

To install the CPU, first turn off your system and remove its cover. Locate the ZIF socket and
open it by first pulling the lever sideways away from the socket then upwards at a 90-degree
right angle. Insert the CPU in the correct direction, smear the heat-dissipation grease over the
CPU die, then put a CPU fan on to cover the face of the CPU. With the added weight of the CPU

HARDWARE INSTALLATION 8

(

)

fan, no force is required to insert the CPU into the socket. Once completely inserted, close the
socket’s lever while holding down the CPU. This locks the CPU into the socket.

Step 2:

Connect the CPU fan’s cable to the CPU-FAN connector indicated on the diagram below.
Ensure that the cable is connected correctly! It will be obvious which way it must fit.

CPU-FAN

Socket

462 CPU

(Top View)

Notch

Socket 462 CPU Installation

Notch

Socket

462 CPU

Bottom View

9 HARDWARE INSTALLATION

2.4 100/133 MHz System Configuration

SW3 allows you to set the FSB (Front Side Bus) for 100 or 133MHz Configuration. Please
leave the SW3 setting as “133” if you want to adjust the FSB Clock from BIOS. (Please
refer Section 3.10 Frequency/Voltage Control on page 46).

SW3

SW3

12

100

133

O: ON

X: OFF

o

o

xx

(Default)

100/133 MHz FSB Configuration Jumper

2.5 Clear CMOS Jumper (3-pin JP1)

To clear the CMOS data, you should turn off your computer’s power and put Jumper JP1 in
the Clear position as shown below for at least 10 seconds. Return the jumper to NORMAL
and reboot.

JP1

1

Clear CMOS Jumper

CMOS

1

1

Normal

(Default)

Clear

HARDWARE INSTALLATION 10

g

2.6 Suspend To RAM Setting (3-Pin JP4)

To use the STR Function, turn off system power and short pin 2 and 3 of JP4. Reboot the
system and enter BIOS Setup to turn on STR. Please left the Jumper setting at “STR_OFF”,
then you can select the ACPI Suspend T ype only through BIOS Menu. Please refer to section
“3.7 Power Management Setup” for detail.(The future version will fix the setting on-board, and
remove JP4).

JP4

1

SOFT_OFF

STR_OFF

(Default)

Suspend To RAM Settin

Jumper

1

1

2.7 Keyboard Wake UP (3-pin KB-AWK)

This function or enables you to use the keyboard to power up the system. Set this jumper to

“Enable” if you wish to use your keyboard to power up your computer .

JP5

1

1

Enable

(Default)

Keyboard Wake Up

1

Disable

11 HARDWARE INSTALLATION

2.8 Memory Configuration

This motherboard must be installed with DIMMs (Dual Inline Memory Modules). The DIMMs must
be 2.5V DDR DRAM modules. The VIA KT266 chipset supports PC1600 and PC2100 DDR
DIMMs. You can install memory in any combination as follows:

DIMM Location

DIMM1
DIMM2
DIMM3

T otal Memory

DDR DRAM 8,16, 32, 64,128, 256, 512 MB and1GB
DDR DRAM 8,16, 32, 64,128, 256, 512 MB and1GB
DDR DRAM 8,16, 32, 64,128, 256, 512 MB and1GB
3 GB (max.)

184pin DIMM

NOTE: Different types of DRAM modules (eg. DDR200 and DDR266) should not

be installed on one motherboard at the same time.

184Pin DDR DIMM Sockets

184Pin DDR DRAM Module (DIMM1)
184Pin DDR DRAM Module (DIMM2)
184Pin DDR DRAM Module (DIMM3)

HARDWARE INSTALLATION 12

2.9 Primary/Secondary IDE Connectors (T wo 40-pin IDE)

This motherboard supports two 40-pin IDE connectors marked as IDE1 (primary IDE channel)
and IDE2 (secondary IDE channel). Each channel supports two IDE devices, for a total of four
devices. Connect your Hard Disk Drive (HDD) (the main one if you are using more than one) to
the “Master” connector (at the end of the cable) and connect it to IDE1 (see important note
below). If your HDD supports UltraDMA/66/100, you must use an 80-wire cable, otherwise the
HDD won’t be able to reach this speed. If you intend to operate two IDE devices from the same
channel, one device must be set to “Master” mode, the other to “Slave” mode. Hard disk drives,
CD ROM drives and other IDE devices can be set as either “master” or “slave”, depending on
the device’s jumper settings. Please refer to the device’s user manual for more information.

NOTE: The connectors must be attached properly to the IDE channels. Ensure

that the red stripe on one edge of the ribbon cable (this may be faint and
could also be a dotted line) is the closest to PIN1 (on the left with the
motherboard as oriented in the picture below).

Note: Orient the red stripe to PIN1

Primary IDE Connector

PIN1
PIN1

Secondary IDE Connector

IDE2

IDE1

IDE Connectors