Duron K7V266A User manual

K7V266A
(VIA KT266A Chipset, Socket-462)
For AMD®Athlon XP/ Athlon/ Duron CPUs
With DDR 266 Memory
ATX Form Factor
Main Board
User’s Manual
(Ver.:1.0)

Copyright
Copyright©2001 by this company. No part of this document may be
reproduced, transmitted, transcribed, stored in a retrievable system,
or translated into any natural or computer language, in any form or
by any means without prior written permission. This manual and the
information contained here are protected by copyright. All rights
reserved.
Copyright 2001. All Rights Reserved.
Revision History
Revision Date Release Notes
1.0 Jan.-2001 First Official Release

Warning and disclaimer
This manual is designed to provide information about the AMD®
Athlon XP/ Athlon/ Duron mainboard. Effort have been made to
make this manual as accurate as possible, but no warranty or fitness
is implied. All the information is provided on an 'as is' basis. The
author and his corresponding publishing company shall have neither
liability nor responsibility to any person or entity with respect to any
loss or damages arising from the information contained in this
manual or from the use of the system board that accompanies it.
Information contained in this manual is subject to change without
notice. The manufacturer of the system board will not be held
responsible for technical or editorial omissions made herein, nor for
the incidental or consequential damages resulting from its
furnishing, performance, functionality or use. Subsequent changes to
this manual will be incorporated into the next edition. We welcome
any suggestion regarding this manual or our computer products.
Trademarks
●IBM®is a registered trademark of International Business Machines
Corporation.
●Microsoft®is a registered trademark of Microsoft®Corporation.
●PCI®is a registered trademark of PCI®Special Interest Groups.
●AWARD®is a registered trademark of Award Software Inc.
All other trademarks are the property of their respective owners.

I
Table of Contents
Chapter 1 Introduction…………………………………………1
1-1 Main Specifications……………………………………………………2
1-2 System Configuration……………………………………………..……4
1-3 Notice of Hardware Installation………….……………………....……5
Chapter 2 Installation……………….……………………….…6
2-1 Component Locations …………………..…………………………..…6
2-2 Layout Reference……………………………………………..………..7
2-3 Jumper Setting…………………………………………………………8
2-3-1 JP1: AC97 & MC97 Status Selector…………………………………8
2-3-2 JP2 & SW1: CPU Frequency Selector………………………………9
2-4 CPU Installation………………. ……………………………………10
2-3-1 CPU and System Cooling………………………….…………………13
2-5 Connectors………..……………………………………………………14
2-5-1 Front Panel…………………………………………………….………14
2-5-2 Back Panel Connectors………………………………………………16
2-5-3 Power Supply Connector……………………………………………18
2-5-4 Floppy Disk Connector………………………………………………18
2-5-5 IDE1 and IDE2………………………………………………………20
2-5-6 IR1: IrDA Connector…………………………………………………21
2-5-7 WOM1: Wake Up On Modem………………………………………22
2-5-8 WOL1:WakeUp On LAN (Optional)………………………………23
2-6 Memory………………………………………………………………24
2-6-1 Memory Installation…………………………………………………25
Chapter 3 Software Installation………………………………26
3-1 Notice of Driver Installation…………………………………………26
3-2 How to Install Software Drivers…………………………………….27

II
Chapter 4 The BIOS…..………………………………………28
4-1 Updating the BIOS……………………………………………………29
4-2 The CMOS Memory…………………………………………………30
4-3 The BIOS Setup Pages………………………………………………32
4-3-1 Standard CMOS Setup………………………………………………35
4-3-2 BIOS Features Setup…………………………………………………39
4-3-3 Chipset Features Setup………………………………………..……43
4-3-4 Integrated Peripherals………………………………………..……...48
4-3-5 Power Management Setup………………………………………….53
4-3-6 PNP/PCI Configuration Setup……………………………………….57
4-3-7 PC Health Status……………………………………………………59
4-3-8 Frequency/Voltage Control.…………………………………………60
4-3-9 Passwords Setting……………………………………………………..61
Chapter 5 Appendix………………………………….………63
5-1 Memory Map………………………………………………….………63
5-2 I/O Map………………………………...….………………………….64
5-3 Time & DMA Channels Map…………………………………………65
5-4 Interrupt Map………………………………………….……………...66
5-5 RTC & CMOS RAM Map………………………………………….67
5-6 ISA I/O Address Map……………………………………………..68
Chapter 6 Q & A…………………………………………………………………70
Important Warnings:
STOP
WARNING: NEVER run the processor without the heatsink properly and firmly
attached. This will damage the processor within SECONDS. Also do NOT try to use
Pentium Heatsinks, these will NOT fit and do NOT provide adequate cooling.
STOP
WARNING: Make sure your power supply can deliver the power your system needs.
We recommend AT LEAST a 250W power supply. Even better, get a 300W power
supply, especially when using many peripherals.

1
Chapter 1 Introduction
Thank you for purchasing this high quality motherboard, we are confident that you will be
able to use this motherboard to your full satisfaction. This manual is divided into 6 main
sections, as described below:
.
Introduction
The introduction contains information on the main specifications for this motherboard, the
package contents and cautionary notes.
Hardware Installation
The Hardware Installation section is the most important in the manual. It describes in detail
how to set the motherboard up for operation. Read all information and follow all steps,
especially if you are a new user.
Software Installation
The software section describes the drivers that need be installed to make your OS operates
properly. The drivers are provided on the driver CD.
BIOS Setup
Information on how to enter the BIOS setup and change settings is given here. In addition
all individual BIOS items are described. Although some BIOS setting information is given
in the hardware installation section where appropriate, refer to the BIOS Setup Section for
details.
Appendix
Provides useful information
Q & A

2
1-1 Main Specifications
 PCB board size and form factor: 24.5 x 30.5cm, ATX type.
 PCB layer: 4 layers
 Supported CPUs
Can support the latest 200/ 266MB FSB Socket-462 AMD Athlon XP (up to 2000+)/
Athlon (up to 1.4GHz) or Duron (up to 1.2GHz) CPUs or higher speed.
 Chipset Northbridge
The VIATM KT266A system controller is a 200/ 266MHz System Bus. The DRAM
controller supports DDR200/ DDR266 Double Data Rated (DDR) SDRAM; it complies
with AGP 2.0 specifications for 4X, 2X AGP modes and PCI 2.2 bus interface with support
for 6 PCI masters. It was designed especially to deliver enhance AMD®Athlon XP/ Athlon
or Duron processor system performance.
 Chipset Southbridge
The VT8233 PCI Super-I/O Integrated Peripheral Controller (PSIPC) support Ultra/DMA/
100, which allows burst mode data transfer rates of up to 100MB/ sec; AC97 audio (using
the on-board VIA VT1611A Audio Cadec); USB controller with root hub and four function
ports.
 Memory
This motherboard comes equipped with three Double Data Rate (DDR) Memory Module
sockets to support DDR 200MHz/ 266MHz-compliant (128, 256MB, or 512MB) DDR
Modules up to 3GB.
 AGP (Accelerated Graphics Port)
This motherboard comes with an AGP slot with support for AGP cards for high
performance. The AGP 66MHz 4X mode is supported as well, further increasing system
performance.
 PCI Expansion Slots
With six 32-bit PCI (Rev. 2.2) expansion slots, which can support Bus Master PCI cards,
such as LAN or Video-grabber cards (PCI supports up to 133MB/s maximum throughput),
this motherboard is ready for the most demanding applications.

3
 CNR Slot
A Communication Networking Riser (C.N.R.) slot can be fitted with CNR MODEM, or
MODEM.
 USB interface
With support for up to 6 USB ver 1.1 ports, four on-board, this motherboard provides
ample USB expansion room.
 IDE interface
This motherboard comes with an onboard PCI Bus Master IDE controller with two
connectors that support four ATA66/ 33 devices on two channels. Supports UDMA/100,
UDMA/66, UDMA/33, PIO Modes 3 & 4 and Bus Master IDE DMA Mode 2, and
Enhanced IDE devices, such as CD-R/ RW, DVD-ROM, CD-ROM, Tape Backup and LS-
120 drives.
 Super Multi-I/O
This functionality is integrated into the southbridge of the chipset. It provides two high-
speed UART compatible serial ports and one parallel port with EPP and ECP capabilities.
 Infrared (IrDA) Connector
This functionality is also integrated into the southbridge of the chipset. The IrDA connector
supports an optional IR remote control device for wireless interfacing with external
peripherals, personal gadgets, or an optional remote controller.
 System BIOS
This motherboard comes with a 2MB BIOS that provides CPU/ SDRAM frequency, boot
block write protection, and HD/ SCSI/ CD/ Floppy boot selection. DMI is also supported
through BIOS, which allows hardware to communicate within a standard protocol creating
a higher level of compatibility.

4
1-2 System Configurations
Below is the VIA KT266A chipset based system configuration:
VIA
KT266A
AMD Athlon XP/ Athlon/
Duron processor
System Bus
3.2GB/s
2.1GB/sec
8-Bit Hub
Interface
26MB/s
AGP4X (1.5V)
1.06GB/s
DDR200/266
AGP Slot or
3D Graphics
Controller
AC-97 Modem CODEC
(optional)
2 ATA100 IDE Channels
6 USB 1.1 Ports
PCI Bus
SIO Flash
BIOS
DDR200/266
DDR200/266
VIA
VT 8233

5
1-3 Notice of Hardware Installation
Before hardware installation, make sure you have checked the following things.
A. Check the package
If any of these items is missing or damaged, contact the dealer from whom you purchase.
Leave this main board in its original package until you are ready to install it. In the
package, there are:
➨ This motherboard
➨ 1 Manual
➨ 1 Driver Installation CD-ROM
➨ 1 IDE ATA 66/100 Flat-Cable
➨ 1 Floppy Disk Drive Flat-Cable
B. Make sure power is off.
During hardware installation, be sure that there is no power connected during this period.
C. Avoid ESD (Electrical Static Discharge.)
While installing the main board, wear a grounded wristband or ankle strap to avoid ESD
(Electrical Static Discharge).

6
Chapter 2 Installation
2-1 Component Locations
1 FAN1
2 ATX Power Supply
3 VIA KT266A Chipse t
4 CPU Socket-462
5 DIMM
6 IDE
7 VIA VT8233
8 BIOS
9 Floppy
10 Battery
11 FAN2
12 WOL1
13 WOM1
14 CNR Slot
15 PCI slot
16 USB3
17 USB2
18
19 FAN3
20
21 GAME PORT
LINE-OUT
LINE-IN
MIC-IN
22 LPT, COM
23 USB
24 PS/2 Mouse
& K/B
Sound Codec
AGP Slot
Set to "2-3"
133MHz
1 2 3
1 2 3 4 5
13 12 11 10

7
2-2 Layout Reference
PS/2 Mouse
& K/B
USB
LPT
COM1
COM2
LINE-OUT
LINE-IN
MIC-IN
FAN 2
GAME
Socket-462
FAN1
FDD1
IDE1
IDE2
JBAT1
FAN2
USB3
WOL1
WOM1
AGP1
PCI1
PCI2
PCI3
PCI4
PCI5
CNR1
VIA
VT 8233
IR 1
Sound Codec
PWR_LED
SPEAKER
RESET
HD-LED
PW_BN
EXTSMI
DIMM1
DIMM2
DIMM3
USB2
PCI6
ATXPower
JCDIN1
JP 1
BIOS
JP 2
12345
ON
SW 1

8
2-3 Jumper Setting
User only needs to set JP2 and “DIP –Switch 5” of SW1 for CPU Front Side
BUS speed selection, please refer to page-9. (No needs to set BIOS when
install CPU).
2-3-1 JP1: AC97 & MC97 Status Selector
JP1 is a 2-pin connector which provides AC97 & MC97 status selector. Please
see details as below.
JP 1: AC 97 & MC 97
Status Selector
Set to "OFF"
CNR slot -Primary
BIOS must set onboard
AC 97 disabled
JP 1
JP 2
SW 1
1 2 3 4 5
ON

9
2-3-2 JP2 & SW1: CPU Front Side Bus Selector
JP2 is a 3-pin connector and SW1 is a 5-pin DIP switch, which provide CPU
front Side Bus selector. Please select the right ratio according to your CPU and set
details as below.
JP2: CPU Front Side
Bus speed Selector
Set to "2-3"
266MHz
1 2 3 4 5
ON
SW 1
JP 2 1 2 3
1 2 3
Set to "1-2"
200MHz
SW1
CPU Front Side
Bus Speed JP2 DIP1DIP2DIP3DIP4DIP5
200MHz 1-2 OFF ON ON ON ON
266MHz 2-3 OFF ON ON ON OFF
1. DIP 1-4 of SW1 is reserved for vendor only.
2. All AMD XP CPUs are 266MHz Front Side Bus speed.
3. Refer to your CPU dealer for more details.

10
2-4 CPU Installation
The first step in the installation of your CPU is the insertion of the CPU into the 462 pins
CPU socket. Please follow the steps as outlined below carefully to avoid damage to the
CPU.
Avoid Static Electricity
The AMD K7 processors and your motherboard contain sensitive electronic components
that can be easily damaged by static electricity. We recommend that you leave the
processor in its original packaging until you are ready to install it. You should only touch
the edges of the processor, NEVER touch the processor pins to avoid static discharge.
First take a moment to inspect your CPU for obvious damage due to shipping or handling.
Be sure that no noticeable damage exists before proceeding. You should have the following
items:
 1 AMD K7 processor.
 1 good heatsink and fan assembly.
Step 1
The following figure shows the processor socket. Note that the release lever on the right
side of the socket is down and latched. This position is used to lock the processor in place.
The lever must be raised to install the processor. To do this, first push the lever sideways to
unlatch it, then raise it all the way up (approximately 90 degrees).
Step 2
The processor pin array at the top two corners is angled and has no pins in the corners.
Notice that at the top of the socket on the motherboard (near where it says "Socket 462")
the corners also do not have positions for pins. The processor must be positioned so the
pins match up properly. When you do that, the corner of processor that is cut off will be
positioned next to the release pivot.
It should take no force to install the processor, this is a zero insertion force (ZIF) socket. If
it takes any force you are doing something wrong. Check the pin alignment and also make
sure the release lever is raised up completely.

11
After placing the CPU lower the release lever to lock the processor in place.
Now with the processor properly installed, you can proceed to install the heatsink. It is
important to note that If you have never installed a heatsink on an AMD Athlon XP/
Athlon or Duron processor before it may be difficult. We recommend you do a dry run a
few times before doing the final installation. To allow you to do this read the following
instructions. Do not remove the film on the thermally conductive compound until you are
ready to do the final installation.
STOP
WARNING: Never run the processor without the heatsink properly and
firmly attached.
Step3
The picture below shows the bottom of the heatsink. Notice the step in the heatsink surface,
this portion fits over the top of the socket, where the legend "Socket 462" is molded into
the plastic. The heatsink must be mounted with this step above the top of the socket or the
heatsink will not be touching the processor properly.
The next picture shows the removal of the plastic film from the thermally conductive
compound. The thermal compound is a thin layer of material that increases the efficiency
of the heatsink by filling microscopic surface voids in the processor or heatsink surface
with a thermally conductive material. Please do not remove the plastic film until you have
practiced installing the heatsink and mounting the clips on the socket. It can take a few tries
to get used to doing this.

12
The following picture shows a side view of the heatsink with the retaining clip at the
bottom of the heatsink. Make sure this retaining clip is at the bottom of the heatsink before
trying to install it.
The non-moveable end of the heatsink retaining clip installed on the lug at the bottom of
the processor socket. This end of the clip simply slides over the lug when you tilt the
heatsink / fan assembly towards the lug.
Now lock the locking clip for the retaining strap over the lug at the other (pivot end) of the
processor socket. This is an easy procedure after you do it a few times, but initially it will
require you to use a finger on one hand to push the latch down and use your other hand to
push the latch in. This is the part you need to practice to install the clip properly. When you
are holding the heatsink, make sure you do apply pressure to the fan. You could damage it
and cause thermal failure of the processor.
STOP
WARNING: Be careful not to scrape the motherboard during the mounting
of the fan or else damage may occur to the motherboard.
Now connect the wire from the heatsink fan to the FAN1 connector on the motherboard.
This connector is keyed and can only be installed one way. If you use a heatsink assembly
that has three cooling fans, connect one to FAN1 and the other FAN2. For more
information on the FAN connectors, refer to the FAN connector section later in this
section.

13
2-4-1 CPU and System Cooling
Any attempt to operate the AMD K7 Processor without a suitable cooling
solution will result in permanent damage to the processor and potentially other
components within the system.
FAN Headers
Your motherboard allows the use of in all 3 FANs. Of these 3 FANs, 1 can be
used by the CPU Heatsink assembly. The other 2 FAN Headers allow
connection of a Chassis Fan and a Power Supply FAN respectively. For a the
location of the FAN connectors, refer to the following picture:
GND
+12V
SENSE
CPU FAN
Connector
GND
+12V
SENSE
FAN1
FAN3
1 2 3 4 5
ON
FAN2

14
2-5 Connectors
There are many connectors on this main board. Refer to the following pages for
details.
2-5-1 Front Panel
Front panel has connectors as ”EXTSMI,” “PW_BN,” “HD_LED,” “RESET,”
“SPEAKER,” “PWR_LED.” Please refer the details as below.
EXTSMI
PW-BN
HD-LED
RESET PWR-LED
SPEAKER

15
PWR-LED is a 3-pin connector. It allows you to connect a three pin LED fron the
case. Notice the polarity, LED will only light up if the polarity is correct.
SPEAKER is a 4-pin keyed Berg strip. This speaker connector is for the internal
case speaker. This speaker will enable the BIOS to give spoken messages in case
of boot up trouble. The BIOS been codes also use this speaker. For Games and
Music this speaker will not be used, but rather the back panel line-out connector.
RESET connector is a 2 -pin keyed Berg strip, connected to the push button reset
switch on the case front panel. Shorting both pin 1 & pin 2 can reset the system,
which is similar to the power off and then on again.
HD-LED (Hard Disk activity LED connector) is a 2-pin keyed Berg strip. It is
used to connect to front panel Hard Disk LED. This LED will light up whenever
one of your IDE devices is being accessed.
PW_BN with a 2-pin Berg strip on case front panel indicates the current power
status of system. It is used to connect to the Power Button on the front panel of
the case (if there is).
EXTSMI is a 2-pin connector. This is the External System Management Interrupt
Button connector. Connect the second button on your ATX case to this connector.
Rressing that button will force the system into suspend mode. (The BIOS allows
specifying of the suspend state, and of the wake-up events that can wake the
system up again).