Asus A7M266 User Manual

0 (0)

® A7M266

DDR SDRAM

266MHz FSB AGP Pro/4X

Socket A Motherboard

USER’S MANUAL

USER'S NOTICE

No part of this manual, including the products and software described in it, may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any means, except documentation kept by the purchaser for backup purposes, without the express written permission of ASUSTeK COMPUTER INC. (“ASUS”).

ASUS PROVIDES THIS MANUAL “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OR CONDITIONS OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL ASUS, ITS DIRECTORS, OFFICERS, EMPLOYEES OR AGENTS BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF PROFITS, LOSS OF BUSINESS, LOSS OF USE OR DATA, INTERRUPTION OF BUSINESS AND THE LIKE), EVEN IF ASUS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES ARISING FROM ANY DEFECT OR ERROR IN THIS MANUAL OR PRODUCT.

Product warranty or service will not be extended if: (1) the product is repaired, modified or altered, unless such repair, modification of alteration is authorized in writing by ASUS; or (2) the serial number of the product is defaced or missing.

Products and corporate names appearing in this manual may or may not be registered trademarks or copyrights of their respective companies, and are used only for identification or explanation and to the owners’ benefit, without intent to infringe.

AMD, Athlon™ are trademarks of Advanced Micro Devices, Inc.

VIA is a trademark of VIA Technologies, Inc.

Windows and MS-DOS are registered trademarks of Microsoft Corporation.

Adobe and Acrobat are registered trademarks of Adobe Systems Incorporated.

Trend and ChipAwayVirus are trademarks of Trend Micro, Inc.

Other company and product names may be trademarks or registered trademarks of the respective companies with which they are associated.

The product name and revision number are both printed on the product itself. Manual revisions are released for each product design represented by the digit before and after the period of the manual revision number. Manual updates are represented by the third digit in the manual revision number.

For previous or updated manuals, BIOS, drivers, or product release information, contact ASUS at http://www.asus.com.tw or through any of the means indicated on the following page.

SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUALARE FURNISHED FOR INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE ATANY TIME WITHOUT NOTICE, AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BYASUS. ASUS ASSUMES NO RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR INACCURACIES THAT MAY APPEAR IN THIS MANUAL, INCLUDING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT.

Copyright © 2000 ASUSTeK COMPUTER INC. All Rights Reserved.

Product Name:

ASUS A7M266

Manual Revision:

1.02 E647

Release Date:

November 2000

 

 

2

ASUS A7M266 User’s Manual

ASUS CONTACT INFORMATION

ASUSTeK COMPUTER INC. (Asia-Pacific)

Marketing

Address:

150 Li-Te Road, Peitou, Taipei, Taiwan 112

Telephone:

+886-2-2894-3447

Fax:

+886-2-2894-3449

Email:

info@asus.com.tw

Technical Support

MB/Others (Tel):

+886-2-2890-7121 (English)

Notebook (Tel):

+886-2-2890-7122

(English)

Desktop/Server (Tel):+886-2-2890-7123

(English)

Fax:

+886-2-2893-7775

Email:

tsd@asus.com.tw

 

WWW:

www.asus.com.tw

 

FTP:

ftp.asus.com.tw/pub/ASUS

ASUS COMPUTER INTERNATIONAL (America)

Marketing

Address:

6737 Mowry Avenue, Mowry Business Center, Building 2

 

Newark, CA 94560, USA

Fax:

+1-510-608-4555

Email:

tmd1@asus.com

Technical Support

Fax:

+1-510-608-4555

Email:

tsd@asus.com

WWW:

www.asus.com

FTP:

ftp.asus.com/Pub/ASUS

ASUS COMPUTER GmbH (Europe)

Marketing

Address:

Harkortstr. 25, 40880 Ratingen, BRD, Germany

Fax:

+49-2102-442066

Email:

sales@asuscom.de (for marketing requests only)

Technical Support

Hotline:

MB/Others: +49-2102-9599-0 Notebook: +49-2102-9599-10

Fax:

+49-2102-9599-11

Support (Email):

www.asuscom.de/de/support (for online support)

WWW:

www.asuscom.de

FTP:

ftp.asuscom.de/pub/ASUSCOM

ASUS A7M266 User’s Manual

3

CONTENTS

1. INTRODUCTION

7

1.1

How This Manual Is Organized ...................................................

7

1.2

Item Checklist ..............................................................................

7

2. FEATURES

8

2.1

The ASUS A7M266 .....................................................................

8

 

2.1.1 Specifications .....................................................................

8

 

2.1.2 Specifications – Optional Components ..............................

9

 

2.1.3 Special Features ................................................................

10

 

2.1.4 Performance Features .......................................................

10

 

2.1.5 Intelligence .......................................................................

11

2.2

Motherboard Components ..........................................................

12

 

2.2.1 Component Locations .......................................................

13

3. HARDWARE SETUP

14

3.1

Motherboard Layout ..................................................................

14

3.2

Layout Contents .........................................................................

15

3.3

Getting Started ...........................................................................

17

3.4

Motherboard Settings .................................................................

18

3.5

System Memory (DDR DIMM) .................................................

25

 

3.5.1 General DIMM Notes .......................................................

26

 

3.5.2 Memory Installation .........................................................

26

3.6

Central Processing Unit (CPU) ..................................................

27

3.7

Expansion Cards ........................................................................

28

 

3.7.1 Expansion Card Installation Procedure ............................

28

 

3.7.2 Assigning IRQs for Expansion Cards ..............................

30

 

3.7.3 Accelerated Graphics Port Pro (AGP Pro) .......................

30

 

3.7.4 Audio Modem Riser (AMR) Slot .....................................

32

3.8

External Connectors ...................................................................

33

3.9

Starting Up the First Time ..........................................................

45

4. BIOS SETUP

47

4.1

Managing and Updating Your BIOS ..........................................

47

 

4.1.1 Upon First Use of the Computer System ..........................

47

 

4.1.2 Updating BIOS Procedures ..............................................

48

4.2

BIOS Setup Program ..................................................................

51

 

4.2.1 BIOS Menu Bar ................................................................

52

 

4.2.2 Legend Bar .......................................................................

52

4

ASUS A7M266 User’s Manual

CONTENTS

4.3

Main Menu .................................................................................

54

 

4.3.1 Primary & Secondary Master/Slave .................................

55

 

4.3.2 Keyboard Features ............................................................

58

4.4

Advanced Menu .........................................................................

60

 

4.4.1 Chip Configuration ...........................................................

63

 

4.4.2 I/O Device Configuration .................................................

66

 

4.4.3 PCI Configuration ............................................................

69

 

4.4.4 Shadow Configuration ......................................................

73

4.5

Power Menu ...............................................................................

74

 

4.5.1 Power Up Control .............................................................

76

 

4.5.2 Hardware Monitor ............................................................

78

4.6

Boot Menu .................................................................................

79

4.7

Exit Menu ...................................................................................

81

5. SOFTWARE SETUP

83

5.1

Install Operating System ............................................................

83

5.2

Start Windows ............................................................................

83

5.3

A7 Series Motherboard Support CD ..........................................

83

5.4

Uninstalling Programs ................................................................

85

6. SOFTWARE REFERENCE

87

6.1

ASUS PC Probe .........................................................................

87

6.2

ASUS Update .............................................................................

92

6.3

YAMAHA XGPlayer .................................................................

93

7. APPENDIX

97

7.1

PCI-L101 Fast Ethernet Card .....................................................

97

7.2

Modem Riser ..............................................................................

99

7.3

Glossary ...................................................................................

101

ASUS A7M266 User’s Manual

5

FCC & DOC COMPLIANCE

Federal Communications Commission Statement

This device complies with FCC Rules Part 15. Operation is subject to the following two conditions:

This device may not cause harmful interference, and

This device must accept any interference received, including interference that may cause undesired operation.

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with manufacturer's instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

Re-orient or relocate the receiving antenna.

Increase the separation between the equipment and receiver.

Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.

Consult the dealer or an experienced radio/TV technician for help.

WARNING! Any changes or modifications to this product not expressly approved by the manufacturer could void any assurances of safety or performance and could result in violation of Part 15 of the FCC Rules.

Reprinted from the Code of Federal Regulations #47, part 15.193, 1993. Washington DC: Office of the

Federal Register, National Archives and Records Administration, U.S. Government Printing Office.

Canadian Department of Communications Statement

This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications.

This Class B digital apparatus complies with Canadian ICES-003.

Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.

6

ASUS A7M266 User’s Manual

1.INTRODUCTION

1.1How This Manual Is Organized

This manual is divided into the following sections:

1.

INTRODUCTION

Manual information and checklist

2.

FEATURES

Production information and specifications

3.

HARDWARE SETUP

Instructions on setting up the motherboard.

4.

BIOS SETUP

Instructions on setting up the BIOS

5.

SOFTWARE SETUP

Instructions on setting up the included software

6.

SOFTWARE REFERENCE

Reference material for the included software

7.

APPENDIX

Optional items and general reference

1.2 Item Checklist

Check that your package is complete. If you discover damaged or missing items, contact your retailer.

Package Contents

(1) ASUS Motherboard

(1) 40-pin 80-conductor ribbon cable for internal UltraDMA/ 100 / UltraDMA/66 (also compatible with UltraDMA/33 IDE drives/devices)

(1) Ribbon cable for internal UltraDMA/33 IDE drives

(1) Ribbon cable for one 5.25” and two 3.5” floppy disk drives

(1) ASUS 2-port USB Connector Set

(1) Bag of spare jumper caps

(1) ASUS Support CD with drivers and utilities

(1) This Motherboard User’s

Manual

Optional Items

ASUS CIDB chassis intrusion detection module

ASUS IrDA-compliant infrared module

ASUS PCI-L101 Wake-On-LAN 10/

100 Ethernet Card

ASUS MR-I Modem Riser Card

1. INTRODUCTION

Manual / Checklist

ASUS A7M266 User’s Manual

7

Specifications

.2 FEATURES

2.FEATURES

2.1The ASUS A7M266

The ASUS A7M266 motherboard is carefully designed for the value-conscious PC user who wants advanced features processed by the fastest processors.

2.1.1 Specifications

AMD Athlon™ /Duron™ Processor Support: Supports Socket A-based AMD

 

Athlon™ /Duron™ processors.

North Bridge System Chipset: AMD-761™ chipset with AGP/PCI/Memory

 

controller supports a 266MHz Front Side Bus (FSB), supports DDR SDRAM

 

DIMM, complies with AGP 2.0 specifications for 4X, 2X and 1X AGP modes

 

and PCI 2.2. bus interface with support for 5 PCI masters. It is optimized to

 

deliver enhanced AMD Athlon™ processor system performance.

“Super South” South Bridge System PCIset: VIA VT82C686B PCIset with PCI Super-I/O Integrated Peripheral Controller (PSIPC) with support for UltraDMA/100, which allows burst mode data transfer rates of up to 100MB/sec; AC97 audio; USB controller with root hub and four function ports.

PC2100 / PC1600 DDR SDRAM Support: Equipped with two Double Data Rate Dual Inline Memory Module (DDR DIMM) sockets to support up to 2GB of DDR SDRAM. DDR SDRAM is the newest memory standard with the highest bandwidth and lowest latency currently available and dramatically improves the memory system’s ability to service, among others, high multimedia requirements.

Stepless Frequency Selection: Allows CPU external (FSB) frequency settings to be set in 1MHz-increments or reduction.

• JumperFree™ Mode: Allows processor settings and easy overclocking of frequency and Vcore voltage all through BIOS setup when JumperFree™ mode is enabled. Easy-to-use DIP switches instead of jumpers are included to allow manual adjustment of the processor’s external frequency.

AGP Pro Slot: Supports AGP/AGP Pro cards for high performance, component level interconnection targeted at 3D graphical applications supporting 133MHz 4X mode.

UltraDMA/100 Support: Comes with an onboard PCI Bus Master IDE controller with two connectors that support four IDE devices on two channels. Supports UltraDMA/100, UltraDMA/66, UltraDMA/33, PIO Modes 3 & 4 and Bus Master IDE DMA Mode 2, and Enhanced IDE devices, such as DVD-ROM, CD-ROM, CD-R/RW, LS-120, and Tape Backup drives.

Wake-On-LAN Connector: Supports Wake-On-LAN activity through an optional ASUS PCI-L101 10/100 Fast Ethernet PCI card (see 7. Appendix).

Wake-On-Ring Connector: Supports Wake-On-Ring activity through a PCI modem card that supports a Wake-On-Ring connector.

USB: Supports up to 4 USB ports, two on the back panel and two midboard, for more peripheral connectivity options.

8

ASUS A7M266 User’s Manual

2.FEATURES

One Touch Management: Supports an optional ASUS iPanel, an easy to access box with system information LED display, front I/O ports, and space reserved for a hard disk drive. With an ASUS iPanel, you can monitor your computer system’s vital components.

PC Health Monitoring: Provides an easy way to examine and manage system status information, such as CPU and systerm voltages, temperatures, and fan status through the onboard hardware ASUS ASIC and the bundled ASUS PC Probe.

SMBus: Features the System Management Bus interface, which is used to physically transport commands and information between SMBus devices.

PCI/AMR Expansion Slots: Provides five 32-bit PCI (Rev. 2.2) expansion slots, which can support Bus Master PCI cards, such as SCSI or LAN cards (PCI supports up to 133MB/s maximum throughput), and one Audio Modem Riser (AMR) slot (shared), which supports a very affordable audio and/or modem riser card.

Super Multi-I/O: Provides two high-speed UART compatible serial ports and one parallel port with EPP and ECP capabilities.

Enhanced ACPI & Anti-Boot Virus Protection: Programmable BIOS (Flash EEPROM), offering enhanced ACPI for Windows 982000/Millenium compatibility, built-in firmware-based virus protection, and autodetection of most devices for virtually automatic setup.

Concurrent PCI: Concurrent PCI allows multiple PCI transfers from PCI master busses to the memory and processor.

Smart BIOS: 2Mb firmware provides Vcore and CPU/SDRAM frequency adjustments, boot block write protection, and HD/SCSI/MO/ZIP/CD/Floppy boot selection.

Integrated Infrared (IrDA) Support: Integrated IR supports an optional remote control package for wireless interfacing with external peripherals, personal gadgets, or an optional remote controller.

Desktop Management Interface (DMI): Supports DMI through BIOS, which allows hardware to communicate within a standard protocol creating a higher level of compatibility. (Requires DMI-enabled components.)

Color-coded Connectors: To enhance user accessibility to system components and to meet PC 99 compliancy, major connectors in this motherboard are colorcoded.

2.1.2 Specifications – Optional Components

Smart Networking (optional): Features the 3Com 3C920 Fast Ethernet controller, which supports Wired for Management, remote wake-up, and OnNow initiatives to reduce Total Cost of Ownership (TCO).

PCI Audio (optional): Features Cmedia CMI8738 3D positional audio controller with high speed PCI v2.1 bus controller and legacy SB® DSP audio emulator.

2. FEATURES

Specifications

ASUS A7M266 User’s Manual

9

Performance

.2 FEATURES

2.FEATURES

2.1.3Special Features

ACPI Ready: Advanced Configuration Power Interface (ACPI) provides more Energy Saving Features for operating systems that support OS Direct Power Management (OSPM) functionality. With these features implemented in the OS, PCs can be ready around the clock, yet satisfy all the energy saving standards. To fully utilize the benefits of ACPI, an ACPI-supported OS, such as Windows 98/2000/Millenium must be used.

Easy Installation: Incorporates BIOS that supports autodetection of hard disk drives, PS/2 mouse, and Plug and Play devices to make the setup of hard disk drives, expansion cards, and other devices virtually automatic.

New Compliancy: Both the BIOS and hardware levels of this motherboard meet the stringent requirements for PC 99 certification. The new PC 99 requirements for systems and components are based on the following high-level goals: Support for Plug and Play compatibility and power management for configuring and managing all system components, and 32-bit device drivers and installation procedures for Windows95/98/NT . Color-coded connectors and descriptive icons make identification easy as required by PC 99.

2.1.4 Performance Features

Concurrent PCI: Concurrent PCI allows multiple PCI transfers from PCI master busses to the memory and processor.

High-Speed Data Transfer Interface: IDE transfers using UltraDMA/33 Bus Master IDE can handle rates up to 33MB/s. This motherboard with its chipset and support for UltraDMA/100 increases the data transfer rate to 100MB/s. UltraDMA/100 is backward compatible with DMA/66, DMA/33, and DMA and with existing DMA devices and systems so there is no need to upgrade current EIDE/IDE drives and host systems. (UltraDMA100/66 require a 40-pin 80-con- ductor cable to be enabled.)

DDR SDRAM Optimized Performance: This motherboard supports a new generation memory, Double Data Rate (DDR) Dynamic Random Access Memory (SDRAM), which is compatible to the industry standard SDRAM. This new memory technology increases performance by executing two actions per clock cycle, resulting in data transfer rates of up to 2.1 GB/s for 133MHz DDR SDRAM and 1.6GB/s for 100MHz DDR SDRAM.

10

ASUS A7M266 User’s Manual

2.FEATURES

2.1.5Intelligence

Dual Function Power Button: Pushing the power button for less than 4 seconds when the system is in the working state places the system into one of two states: sleep mode or soft-off mode, depending on the BIOS or OS setting (see PWR Button < 4 Secs in 4.5 Power Menu). When the power button is pressed for more than 4 seconds, the system enters the soft-off mode regardless of the BIOS setting.

Fan Status Monitoring and Alarm: To prevent system overheat and system damage, the CPU, power supply, and system fans can be monitored for RPM and failure. All fans are set for its normal RPM range and alarm thresholds.

Message LED (requires ACPI OS support): Turbo LEDs now act as information providers. Through the way a particular LED illuminates, the user can determine if there are messages waiting in the mailbox. A simple glimpse provides useful information to the user.

Remote Ring On (requires modem): This allows a computer to be turned on remotely through an internal or external modem. With this benefit on-hand, users can access vital information from their computers from anywhere in the world!

System Resources Alert: Today’s operating systems such as Windows 98/ Millenium and Windows NT/2000, require much more memory and hard drive space to present enormous user interfaces and run large applications. The system resource monitor will warn the user before the system resources are used up to prevent possible application crashes. Suggestions will give the user information on managing their limited resources more efficiently.

Temperature Monitoring and Alert: CPU temperature is monitored by the ASUS ASIC to prevent system overheat and system damage.

Voltage Monitoring and Alert: System voltage levels are monitored to ensure stable voltage to critical motherboard components. Voltage specifications are more critical for future processors, so monitoring is necessary to ensure proper system configuration and management.

Chassis Intrusion Detection: Supports chassis-intrusion monitoring through the ASUS ASIC. A chassis intrusion event is kept in memory on battery power for more protection.

2. FEATURES

Intelligence

ASUS A7M266 User’s Manual

11

Parts Motherboard

.2 FEATURES

2.FEATURES

2.2Motherboard Components

See opposite page for locations.

Location

Processor Support

Socket 462 for AMD Athlon/Duron Processors .......................

2

 

(NOTE: A CPU thermal sensor is integrated on the motherboard,

 

located near the center of the CPU heat source, just below the

 

CPU socket)

 

Chipsets

AMD 761 system controller ......................................................

1

 

VIA VT82C686B PCIset ...........................................................

8

 

2Mbit Programmable Flash EEPROM .....................................

6

Main Memory

Maximum 2GB support

 

 

2 DIMM Sockets ......................................................................

3

 

PC2100 / PC1600 DDR memory support

 

Expansion Slots

5 PCI Slots ..............................................................................

16

 

1 Accelerated Graphics Port (AGP) Pro Slot .........................

17

 

1 Audio Modem Riser (AMR) Slot ........................

(Shared) 13

System I/O

1 Floppy Disk Driver Connector ..............................................

5

 

2

IDE Connectors (UltraDMA/100 Support) ...........................

4

 

1

Parallel Port Connector .............................................

(Top) 21

 

1

Serial COM1 Port Connector ..............................

(Bottom) 22

 

1

Serial COM2 Port Connector ..............................

(Bottom) 20

 

USB Connectors (Port 0 & Port 1) ........................................

23

 

USB Header (Port 2 & Port 3) ..................................................

7

 

1

PS/2 Mouse Connector ..............................................

(Top) 24

 

1

PS/2 Keyboard Connector ...................................

(Bottom) 24

Audio

PCI Audio Chipset (optional) .................................................

15

 

1

Game/MIDI Connector (on audio model only) .........

(Top) 19

 

1

Line Out Connector (on audio model only) ........

(Bottom) 19

 

1

Line In Connector (on audio model only) ...........

(Bottom) 19

 

1

Microphone Connector (on audio model only) ...

(Bottom) 19

Network Features

3Com 3C920 Fast Ethernet Controller ...................................

14

 

1

LAN (RJ45) Connector .............................................

(Top) 23

 

Wake-On-LAN Connector ......................................................

12

 

Wake-On-Ring Connector ......................................................

10

Hardware Monitoring ASUS ASIC ..............................................................................

9

 

3

Fan Power and Speed Monitoring Connectors

 

Power

ATX Power Supply Connector ...............................................

18

Special Feature

Onboard LED .........................................................................

11

Form Factor

ATX

 

12

ASUS A7M266 User’s Manual

Asus A7M266 User Manual

2.FEATURES

2.2.1Component Locations

1

2

3

4

5

24

23

22

21

20

19

18

17

16

15

14

13

12

11 10

9

8

7

6

2. FEATURES

Motherboard Parts

ASUS A7M266 User’s Manual

13

Layout Motherboard

.3 SETUP H/W

3.HARDWARE SETUP

3.1Motherboard Layout

24.5cm (9.64in)

PS/2

T: Mouse

B:Keyboard

USB Top:

T:USB1 RJ-45

B: USB2

COM1 USBPWR1

 

 

 

 

PARALLEL PORT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COM2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AUDIOGAME

Line

 

 

 

 

Out

 

ConnectorPower

 

 

 

Line

 

 

 

 

 

In

 

 

 

 

 

Mic

 

 

 

 

 

In

 

 

 

 

 

 

 

 

 

ATX

 

 

 

AUX

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HPHONE

CD

MIC2

 

Media-C

8738-CMI

Audio PCI

AUDIO_EN

3Com

Fast

Enternet

 

01

Socket

pin module)

A

184-

AMD761

DDR DIMM1 (64/72 bit,

System

 

 

Controller

 

 

 

0

1

NB_FAN

Accelerated Graphic Port (AGP PRO)

PCI Slot 1

PCI Slot 2

DSCKF

A7M266

PCI Slot 3

CR2032 3V

WOLCON

Lithium Cell

CMOS Power

CPU_FAN PWR_FAN

DSFID

01

DIMM2 (64/72 bit, 184-pin module)

 

 

 

FLOPPY

DDR

 

VIO1

 

(12in)

 

 

 

 

 

2

3

 

PRIMARYIDE

 

30.6cm

 

 

 

 

 

 

VIO

SECONDARY IDE

EEPROMFlash2Mbit

(ProgrammableBIOS)

 

 

 

 

 

 

 

 

VIA

 

 

 

 

 

VT82C686B

 

 

 

 

®

PCIset

 

 

 

 

 

PCI Slot 4

 

 

 

LAN_EN

 

 

CLRTC

 

 

 

 

 

 

 

JTPWR JEN

USBPORT

 

 

 

CHA_FAN

 

 

 

 

PCI Slot 5

ASUS

USBPWR2

 

VID4

CHASSIS

IDELED

VID3

MODEM

WOR

ASIC

IR

SMB

VID2

with Hardware

Audio Modem Riser

 

 

PANEL

VID1

PLED

Monitor

 

(AMR)

AFPANEL

 

 

 

 

 

Grayed components are available only on certain models at the time of purchase.

14

ASUS A7M266 User’s Manual

3.HARDWARE SETUP

3.2Layout Contents

Motherboard Settings

1)

JEN

p. 19

JumperFree Mode (JumperFree / Jumper Mode)

2)

VIO

p. 20

Clock Generator Voltage Setting ((3.30V / 3.56V / 3.45V)

 

VIO1

 

+2.5V Voltage Setting (2.7V / 2.9V / 2.8V)

3)

USBPWR1/USBPWR2

p. 21

USB Device Wake Up (+5V / +5VSB)

4)

DSCKF 1–4

p. 22

CPU External Frequency Setting

6)

VID1/VID2/VID3/VID4

p. 24

Voltage Regulator Output Setting

Expansion Slots/Sockets

1)

System Memory

p. 25

System Memory Support

2)

DIMM1/2

p. 26 DDR DIMM Memory Module Support

3)

Socket 462 (Socket A)

p. 27

CPU Support

4)

PCI1/2/3/4/5

p. 29

32-bit PCI Bus Expansion Slots

5)

AGP PRO

p. 31

Accelerated Graphics Port (AGP) Pro

6)

AMR

p. 32

Audio Modem Riser (AMR) Slot

Connectors

1)

PS2KBMS

p. 33 PS/2 Mouse Porv #onnector (6 pin-female)

2)

PS2KBMS

p. 33 PS/2 Keyboard Port Connector (6-pin female)

3)

USB

p. 34 Universal Serial Bus Connectors 0 & 1 (Two 4-pin female)

4)

COM1/COM2

p. 34 Serial Port Connector (9-pin male)

5)

PRINTER

p. 34 Parallel Port Connector (25-pin female)

6)

GAME_AUDIO

p. 35 Game/MIDI Connector (15-pin female) (optional)

7)

GAME_AUDIO

p. 35 Audio Port Connectors (Three 1/8”) (optional)

8)

RJ45

p. 35 Fast-Ethernet Port Connector (RJ45) (optional)

9)

FLOPPY

p. 36 Floppy Disk Drive Connector (34 pins)

10)

PRIMARY IDE

p. 36 IDE Connectors (Two 40-1 pins)

 

SECONDARY IDE

 

11)

CHASSIS

p. 37 Chassis Intrusion Lead (4-1 pins)

12)

IR

p. 37 Infrared Module Connector (5 pins)

13)

WOLCON

p. 38 Wake-On-LAN Connector (3 pins)

14)

WOR

p. 38 Wake-On-Ring Connector (2 pins)

15)

CHA_FAN

p. 39 Chassis, Power Supply, CPU, Chipset Fan Connectors (3 pins)

 

PWR_FAN

 

 

CPU_FAN

 

 

NB_FAN

 

16)

USBPORT

p. 40 USB Header (10-1 pins)

17)

SMB

p. 40 SMBus Connector (5-1 pins)

18)

AFPANEL

p. 41 ASUS iPanel Connector (24-1 pins)

19)

JTPWR

p. 41 Power Supply Thermal Sensor Connector (2 pins)

continued...

3. H/W SETUP

Layout Contents

ASUS A7M266 User’s Manual

15

3. HARDWARE SETUP

20)

ATXPWR

p. 42 ATX Power Supply Connector (20 pins)

21)

IDELED

p. 42 IDE Activity LED (2 pins)

22)

PWR.LED (PANEL)

p. 43 System Power LED Lead (3 pins)

23)

SPEAKER (PANEL)

p. 43

System Warning Speaker Connector (4 pins)

24)

MSG.LED (PANEL)

p. 43

System Message LED (2 pins)

25)

SMI (PANEL)

p. 43

System Management Interrupt Lead (2 pins)

26)

PWR.SW (PANEL)

p. 43 ATX / Soft-Off Switch Lead (2 pins)

27)

RESET (PANEL)

p. 43

Reset Switch Lead (2 pins)

Contents Layout

SETUP H/W .3

16

ASUS A7M266 User’s Manual

3.HARDWARE SETUP

3.3Getting Started

Before using your computer, you must complete the following steps:

1.Check Motherboard Settings

2.Install Memory Modules

3.Install the Central Processing Unit (CPU)

4.Install Expansion Cards

5.Connect Ribbon Cables, Panel Wires, and Power Supply

6.Setup the BIOS Software

3. H/W SETUP

Getting Started

ASUS A7M266 User’s Manual

17

Settings Motherboard

SETUP H/W .3

3.HARDWARE SETUP

3.4Motherboard Settings

This section explains in detail how to change your motherboard’s function settings through the use of switches and/or jumpers.

WARNING! Computer motherboards and expansion cards contain very delicate Integrated Circuit (IC) chips. To protect them against damage from static electricity, you should follow some precautions whenever you work on your computer.

1.Unplug your computer when working on the inside.

2.Use a grounded wrist strap before handling computer components. If you do not have one, touch both of your hands to a safely grounded object or to a metal object, such as the power supply case.

3.Hold components by the edges and try not to touch the IC chips, leads or connectors, or other components.

4.Place components on a grounded antistatic pad or on the bag that came with the component whenever the components are separated from the system.

5.Ensure that the ATX power supply is switched off before you plug in or remove the ATX power connector on the motherboard.

WARNING! Make sure that you unplug your power supply when adding or removing system components. Failure to do so may cause severe damage to your motherboard, peripherals, and/or components. The onboard LED when lit acts as a reminder that the system is in suspend or soft-off mode and not powered OFF.

 

 

 

 

 

 

 

 

 

 

1

0

1

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A7M266

®

A7M266 Onboard LED

ON

OFF

Standby

Powered

Power

Off

18

ASUS A7M266 User’s Manual

3. HARDWARE SETUP

Motherboard Features Settings (DIP Switches - DSCKF)

The motherboard’s onboard functions are adjusted through the DIP switches. The white block represents the switch’s position. The example below shows all the switches in the OFF position.

 

 

 

 

 

 

 

 

 

 

01

01

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A7M266

A7M266 DIP Switch

DSCKF

 

2 1

 

 

ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

 

 

 

 

 

 

 

 

 

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OFF

ON

 

1.Frequency Selection

2.Frequency Selection

3.Frequency Selection

4.Frequency Selection

1) JumperFree™ Mode (JEN)

This jumper allows you to enable or disable the JumperFree™ mode. The

JumperFree™

mode allows processor settings to be made through the BIOS

setup (see 4.4 Advanced Menu).

Setting

 

 

 

 

 

 

 

JEN

JumperFree

 

 

 

 

 

 

 

[2-3] (default)

Jumper Mode

 

 

 

[1-2]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

0

01

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3 4 VID4

VID3 VID2 VID1

A7M266

Jumper Free

Jumper Mode

 

(Default)

1

2

2

3

A7M266 Jumper Mode Setting JEN

NOTE: In JumperFree™ mode, all VID1-4 must be set to [3-4].

3. H/W SETUP

Motherboard Settings

ASUS A7M266 User’s Manual

19

3.HARDWARE SETUP

2)Voltage Settings (VIO/VIO1)

VIO allows you to select the voltage supplied to the clock generator and VIO1 (for overclocking only) allows you to select the voltage supplied to the chipset and DDR DIMM modules. The default voltage should be used for better system reliability.

Setting

VIO

3.30 Volt

[1-2] (default)

3.56 Volt

[2-3]

3.45 Volt

[3-4]

Setting

VIO1

2.7 Volt

[1-2] (default)

2.9 Volt

[2-3]

2.8 Volt

[3-4]

Settings Motherboard

 

 

 

 

VIO1

 

1

0

01

 

 

 

.3

 

 

1

2

 

 

 

2

 

H/W

 

 

3

 

 

 

3

 

 

 

 

 

 

 

 

 

4

SETUP

 

 

2.7 Volt

2.9 Volt

2.8 Volt

 

 

(default)

VIO

 

 

 

 

 

 

 

 

 

 

 

 

 

1

2

 

A7M266

 

2

3

 

 

 

 

3

 

 

 

 

 

4

 

 

 

3.30 Volt

3.56 Volt

3.45 Volt

A7M266 Voltage Settings

(default)

 

 

WARNING! Using a higher voltage may help when overclocking but may result in the shortening of your computer component’s life. It is strongly recommended that you leave these settings on their default.

20

ASUS A7M266 User’s Manual

3.HARDWARE SETUP

3)USB Device Wake Up (USBPWR1, USBPWR2)

Set these jumpers to +5V to allow wake up from the S1 sleep state (CPU stopped; RAM refreshed; system running in a low power mode) using connected USB devices and +5VSB to allow wake up from the S3 sleep state (no power to CPU; RAM in slow refresh; power supply in a reduced power mode). An ATX power supply that can supply at least 2A on the +5VSB lead is required when these jumpers are set to +5VSB. The default is set to +5V because not all computers have the appropriate ATX power supply. Your computer will not power ON if you set this to +5VSB and do not have the appropriate ATX power supply.

Setting

 

USBPWR1, USBPWR2

+5V

 

[2-3] (default)

+5VSB

[1-2]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

01

01

A7M266

USBPWR1

USBPWR2

1

2

2

3

+5VSB

+5V

 

 

 

(default)

A7M266 USB Device Wake Up

3. H/W SETUP

Motherboard Settings

ASUS A7M266 User’s Manual

21

Settings Motherboard

SETUP H/W .3

3.HARDWARE SETUP

4)CPU External Frequency Setting (DSCKF Switches 1–4)

This option tells the clock generator what frequency to send to the CPU, SDRAM, and the chipset. This allows the selection of the CPU’s External frequency. The CPU External Frequency multiplied by the Frequency Multiple equals the CPU’s Internal frequency (the advertised CPU speed).

IMPORTANT:

1. To use this feature, JEN [see 1) JumperFree™ Mode (JEN) in 3. HARDWARE SETUP] must be set to Jumper mode or [1-2].

2.In JumperFree mode, all dip switches (DSW-1–DSW-4) must be set to OFF.

3.When JumperFree mode is enabled, use BIOS setup in place of these switches (set Operating Frequency Setting to User Define under 4.4 Advanced Menu

in BIOS Setup so you can set the CPU Frequency).

 

 

 

 

 

 

 

 

 

 

DSCKF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

01

01

 

21

 

ON

 

21

 

ON

 

21

 

ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

 

 

3

 

 

 

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

 

4

 

 

 

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CPU

100MHz

103MHz

105MHz

 

2 1

ON

2 1

ON

2 1

ON

A7M266

3

 

3

 

3

 

 

 

 

 

 

 

 

4

 

4

 

4

 

CPU

110MHz

115MHz

133MHz

A7M266 CPU External Frequency Selection

WARNING! Frequencies other than the recommended CPU bus frequencies are not guaranteed to be stable. Overclocking your processor is not recommended. It may result in a slower speed and premature wearing of the processor.

22

ASUS A7M266 User’s Manual

3. HARDWARE SETUP

Manual CPU Settings

NOTE: JumperFree mode must be disabled .

Set the DIP switches by the internal speed of your processor as follows:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(CPU Bus Freq.)

 

CPU

Freq.

Mult.

Bus F.

1

2

3

4

 

 

 

 

 

 

 

 

 

Athlon

1.2GHz

9.0x

133MHz

[ON]

[ON]

[ON]

[OFF]

Athlon

1GHz

7.5x

133MHz

[ON]

[ON]

[ON]

[OFF]

 

 

 

 

 

 

 

 

 

Athlon

1.1GHz

11.0x

100MHz

[ON]

[OFF]

[ON]

[ON]

Athlon

1GHz

10.0x

100MHz

[ON]

[OFF]

[ON]

[ON]

 

 

 

 

 

 

 

 

 

Athlon

950MHz

9.5x

100MHz

[ON]

[OFF]

[ON]

[ON]

Athlon

900MHz

9.0x

100MHz

[ON]

[OFF]

[ON]

[ON]

 

 

 

 

 

 

 

 

 

Athlon

850MHz

8.5x

100MHz

[ON]

[OFF]

[ON]

[ON]

Athlon

800MHz

8.0x

100MHz

[ON]

[OFF]

[ON]

[ON]

 

 

 

 

 

 

 

 

 

Athlon

750MHz

7.5x

100MHz

[ON]

[OFF]

[ON]

[ON]

Athlon

700MHz

7.0x

100MHz

[ON]

[OFF]

[ON]

[ON]

 

 

 

 

 

 

 

 

 

Athlon

650MHz

6.5x

100MHz

[ON]

[OFF]

[ON]

[ON]

Athlon

600MHz

6.0x

100MHz

[ON]

[OFF]

[ON]

[ON]

 

 

 

 

 

 

 

 

 

Duron

750MHz

7.5x

100MHz

[ON]

[OFF]

[ON]

[ON]

Duron

700MHz

7.0x

100MHz

[ON]

[OFF]

[ON]

[ON]

 

 

 

 

 

 

 

 

 

Duron

650MHz

6.5x

100MHz

[ON]

[OFF]

[ON]

[ON]

 

 

 

 

 

 

 

 

 

For updated processor settings, visit the ASUS web site (see ASUS CONTACT INFORMATION).

3. H/W SETUP

Motherboard Settings

ASUS A7M266 User’s Manual

23

3.HARDWARE SETUP

7)Voltage Regulator Output Setting (VID1, VID2, VID3, VID4)

This jumpers allow you to manually adjust the CPU core voltage. It is recommended to use CPU Default as the CPU core voltage. CPU Default means the Vcore is generated according to the CPU VID configuration. For each jumper setting, there are two voltage options, depending on the CPU used.

Settings Motherboard

 

 

 

 

1 2 3 4

1 2 3 4

1 2 3 4

 

 

 

 

VID4

 

 

 

 

 

 

VID3

 

 

 

 

 

 

VID2

 

 

 

 

 

 

VID1

 

 

 

 

 

 

1.85/1.825Volts

1.8/1.775Volts

1.75/1.725Volts

 

 

 

 

VID4

 

 

 

 

 

 

VID3

 

 

 

 

 

 

VID2

 

 

 

1

0

01

VID1

 

 

 

 

 

 

1.7/1.675Volts 1.65/1.625Volts

1.6/1.575Volts

 

 

 

 

VID4

 

 

 

 

 

 

VID3

 

 

 

 

 

 

VID2

 

 

 

 

 

 

VID1

 

 

.3

 

 

 

1.55/1.525Volts 1.50/1.475Volts

1.45/1.425Volts

 

 

 

VID4

 

 

H/W

 

 

 

 

 

 

 

 

VID2

 

 

 

 

 

 

VID3

 

 

 

A7M266

 

 

 

 

SETUP

A7M266 CPU Core Voltage

VID1

 

 

VID3

1.35/1.325Volts

1.30/1.275Volts

 

 

 

 

1.40/1.375Volts

 

 

 

 

VID4

 

 

 

Selection

 

 

VID2

 

 

 

 

 

 

VID1

 

 

 

 

 

 

1.25/1.225Volts 1.20/1.175Volts

1.15/1.125Volts

 

 

 

 

VID4

 

 

 

 

 

 

VID3

 

 

 

 

 

 

VID2

 

 

 

 

 

 

VID1

CPU Default/

 

 

 

 

 

1.10/1.075Volts

 

 

 

 

 

 

JumperFree

 

 

 

 

 

 

(Default)

 

24

ASUS A7M266 User’s Manual

3.HARDWARE SETUP

3.5System Memory (DDR DIMM)

This motherboard uses only Double Data Rate (DDR) Dual Inline Memory Modules (DIMMs). Two sockets are available for 2.5Volt (power level) unbuffered/registered Double Data Rate Synchronous Dynamic Random Access Memory (DDR SDRAM) of 64MB, 128MB, 256MB, 512MB, 1GB to form a memory size between 64MB to 2GB. One side (with memory chips) of the DIMM takes up one row on the motherboard.

DDR DIMMs support both ECC (Error Correction Code, typically used in servers) and non-ECC (used on desktops/laptops) and are available in both registered (typically used in servers) and unbuffered (typically used in PCs) versions.

NOTE: The DDR memory bus runs at the same frequency as the CPU front side bus.

Install memory in any combination as follows:

DIMM Location

184-pin DIMM

Total Memory

Socket 1 (Rows 0&1)

64MB, 128MB, 256MB, 512MB, 1GB

x1

 

 

 

Socket 2 (Rows 2&3)

64MB, 128MB, 256MB, 512MB, 1GB

x1

 

 

 

 

Total System Memory (Max 2GB)

=

 

 

 

ASUS A7M266 Qualified DDR DIMM Vendor List

The following lists the memory modules that have been tested and qualified for use with this motherboard.

Vendor

Model

Type / Size

Manufacturer

 

 

 

 

 

 

 

 

Samsung

M368L1713BT1-CB0

PC2100 / 128MB

Samsung K4H280838B-TCB0

Samsung

M368L1713BT1-CA0

PC1600 / 128MB

Samsung K4H280838B-TCA0

Samsung

M368L3313BT1-CB0

PC2100 / 256MB

Samsung K4H280838B-TCB0

Samsung

M368L3313BT1-CA0

PC1600 / 256MB

Samsung K4H280838B-TCA0

Micron

MT8VDDT864AG-265A2

PC2100 / 64MB

Micron 46V8M8-75

Micron

MT16VDDT1664AG-265A2

PC2100 / 128MB

Micron 46V8M8-75

TwinMOS

N/A

PC2100 / 128MB

Hyundai HY5DU28822

HCD

N/A

PC2100 / 64MB

Micron 46V8M8-75

HCD

N/A

PC2100 / 128MB

Micron 46V8M8-75

HCD

N/A

PC2100 / 256MB

Samsung K4H280838B-TCB0

 

 

 

 

 

 

 

 

 

 

 

 

.3 SETUPH/W

System Memory

ASUS A7M266 User’s Manual

25

Memory System

SETUP H/W .3

3.HARDWARE SETUP

3.5.1General DIMM Notes

DIMMs that have more than 18 chips are not supported on this motherboard.

For the system CPU bus to operate at 200 MHz/266MHz, use only PC1600-/ PC2100-compliant DIMMs.

ASUS motherboards support SPD (Serial Presence Detect) DIMMs. This is the memory of choice for best performance vs. stability.

BIOS shows SDRAM memory on bootup screen.

Single-sided DDR DIMMs come in 64, 128, and 256MB; double-sided come in 128, 256, and 512MB.

WARNING! Be sure that the DIMMs you use can handle the specified DDR SDRAM MHz or else bootup will not be possible.

3.5.2 Memory Installation

WARNING! Make sure that you unplug your power supply when adding or removing memory modules or other system components. Failure to do so may cause severe damage to both your motherboard and expansion cards (see 3.3 Hardware Setup Procedure for more information).

Insert the module(s) as shown. Because the number of pins are different on either side of the breaks, the module will only fit in the orientation shown. A 184-pin DDR SDRAM DIMM has a single notch slightly to the right of center.

 

 

 

 

 

 

 

 

 

 

01

01

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A7M266

®

A7M266 184-Pin DDR DIMM Sockets

This motherboard supports three pairs of differential clock signals per DIMM.

26

ASUS A7M266 User’s Manual

3.HARDWARE SETUP

3.6Central Processing Unit (CPU)

The motherboard provides a Socket 462 or Socket A for CPU installation. The CPU that came with the motherboard should have a fan and heatsink attached to it to prevent overheating. If this is not the case, then purchase and install a set before you turn on your system.

WARNING! Make sure that the heatsink is mounted tightly against the processor. Make sure also that there is sufficient air circulation across the processor’s heatsink by regularly checking that your CPU fan is working. Without sufficient circulation, the processor could overheat and damage both the processor and the motherboard. You may install an auxiliary fan, if necessary.

To install a CPU, first turn off your system and remove its cover. Locate the Socket 462 and open it by first pulling the lever sideways away from the socket then upwards to a 90-degree angle. Insert the CPU with the correct orientation as shown. The notched corner should be orientated toward the blank space on the socket nearest the lever. Because the CPU has a corner pin for two of the four corners, the CPU will only fit in the orientation as shown. The picture is for reference only; you should have a CPU fan and heatsink that covers the face of the CPU. With the added weight of the CPU fan and heatsink, no force is required to insert the CPU. Once completely inserted, close the socket’s lever while holding down the CPU.

NOTES

1.When inserting or removing the CPU, make sure the ZIF socket arm is fully extended (90˚-100˚ upright) and that the CPU is kept parallel to the socket. Do NOT force the CPU into the socket as it will damage the pins. It should drop into the socket with minimal pressure. If not, check the CPU for bent pins or check the orientation of the CPU.

2.Do not forget to set the correct Bus Frequency for your processor or else boot-up may not be possible.

3.Socket A processors require a socket mounted thermal resistor.

CAUTION! Be careful not to scrape the motherboard when mounting/unmounting a clamp-style processor fan or else damage may occur to the motherboard.

1

0

01

 

 

 

 

BLANK

 

 

 

LEVER

 

 

AMD™

LOCK

 

 

Athlon

A7M266

 

 

A7M266 Socket A

 

 

 

 

NOTCH

3. H/W SETUP

CPU

ASUS A7M266 User’s Manual

27

3. HARDWARE SETUP

(This page was intentionally left blank.)

.3 SETUP H/W

28

ASUS A7M266 User’s Manual

3.HARDWARE SETUP

3.7Expansion Cards

WARNING! Unplug your power supply when adding or removing expansion cards or other system components. Failure to do so may cause severe damage to both your motherboard and expansion cards.

3.7.1 Expansion Card Installation Procedure

1.Read the documentation for your expansion card and make any necessary hardware or software settings for your expansion card, such as jumpers.

2.Remove your computer system’s cover and the bracket plate on the slot you intend to use. Keep the bracket for possible future use.

3.Carefully align the card’s connectors and press firmly.

4.Secure the card on the slot with the screw you removed above.

5.Replace the computer system’s cover.

6.Set up the BIOS if necessary

(such as IRQ xx Used By ISA: Yes in 4.4.3 PCI Configuration)

7.Install the necessary software drivers for your expansion card.

3. H/W SETUP

Expansion Cards

ASUS A7M266 User’s Manual

29

Cards Expansion

.3 SETUP H/W

3.HARDWARE SETUP

3.7.2Assigning IRQs for Expansion Cards

Some expansion cards need an IRQ to operate. Generally, an IRQ must be exclusively assigned to one use. In a standard design, there are 16 IRQs available but most of them are already in use, leaving 6 IRQs free for expansion cards. If your motherboard has PCI audio onboard, an additional IRQ will be used. If your motherboard also has MIDI enabled, another IRQ will be used, leaving 4 IRQs free.

IMPORTANT: If using PCI cards on shared slots, make sure that the drivers support “Share IRQ” or that the cards do not need IRQ assignments. Conflicts will arise between the two PCI groups that will make the system unstable or cards inoperable.

The following table lists the default IRQ assignments for standard PC devices. Use this table when configuring your system and for resolving IRQ conflicts.

Standard Interrupt Assignments

IRQ

Priority

Standard Function

0

1

System Timer

1

2

Keyboard Controller

2

N/A

Programmable Interrupt

3*

11

Communications Port (COM2)

4*

12

Communications Port (COM1)

5*

13

Sound Card (sometimes LPT2)

6

14

Floppy Disk Controller

7*

15

Printer Port (LPT1)

8

3

System CMOS/Real Time Clock

9*

4

ACPI Mode when used

10*

5

IRQ Holder for PCI Steering

11*

6

IRQ Holder for PCI Steering

12*

7

PS/2 Compatible Mouse Port

13

8

Numeric Data Processor

14*

9

Primary IDE Channel

15*

10

Secondary IDE Channel

*These IRQs are usually available for PCI devices.

Interrupt Request Table for this Motherboard

 

INT-A

INT-B

INT-C

INT-D

PCI slot 1

shared

PCI slot 2

shared

 

 

 

 

 

PCI slot 3

shared

 

 

 

 

 

PCI slot 4

shared

 

 

 

 

 

PCI slot 5

shared

 

 

 

 

 

AGP Pro slot

shared

shared

 

 

 

 

 

Onboard PCI audio

shared

shared

 

 

 

 

 

AMR devices

shared

 

 

 

 

 

Onboard USB controller

shared

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ASUS A7M266 User’s Manual

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