ASUS A7N266-C User Manual

A7N266-C

JumperFree™ DDR DRAM

266MHz FSB

NVIDIA

nForce 415-D™ Chipset

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 DIRECT ORS, 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.

• Intel and Pentium are registered trademarks of Intel Corporation.

• VIA is a registered trademark of VIA Technologies, Inc.

• 3Com is a registered trademark of 3Com Corporation.

• C-Media is a registered trademark of C-Media Electronics 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.

• Symbios is a registered trademark of Symbios Logic Corporation.

• nVidia is a registered trademark of NVIDIA Corporation. 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 MANUAL ARE FURNISHED FOR INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT ANY TIME WITHOUT NOTICE, AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY ASUS. ASUS ASSUMES NO RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR INACCURACIES THAT MA Y APPEAR IN THIS MANUAL, INCLUDING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT.

Product Name: ASUS A7N266-C Manual Revision: 1.00 E941 Release Date: January 2002

ASUS A7N266-C 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: +886-2-2890-7698 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 A7N266-C 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 ASUS A7N266-C Motherboard................................................... 8

2.1.1 Core Specifications............................................................. 8

2.1.2 Connections ........................................................................ 9

2.1.3 Special Features.................................................................. 9

2.1.4 Performance and Intelligence ........................................... 10

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 Hardware Setup Procedure......................................................... 17

3.4 Motherboard Settings ................................................................. 17

3.5 System Memory ......................................................................... 23

3.5.1 DDR DIMM Support........................................................ 23

3.5.2 Memory Installation ......................................................... 24

3.5.4 General DIMM Memo...................................................... 25

3.6 Central Processing Unit (CPU) .................................................. 26

3.7 Expansion Cards ........................................................................ 27

3.7.1 Installing an Expansion Card ........................................... 27

3.7.2 Assigning IRQs for Expansion Cards .............................. 28

3.7.3 Accelerated Graphics Port (AGP) Pro Slot ...................... 30

3.7.4 Advanced Communications Riser (Slot) .......................... 31

ACR-A6CH Layout.......................................................... 31

ACR-A6CH Hardware Installation Procedure ................. 32

3.8 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 .............................................. 49

4.2 BIOS Setup Program.................................................................. 51

4.2.1 BIOS Menu Bar................................................................ 52

ASUS A7N266-C User’s Manual

CONTENTS

4.2.2 Legend Bar ....................................................................... 52

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 ................................................. 65

4.4.3 PCI Configuration ............................................................ 67

4.4.4 Shadow Configuration...................................................... 69

4.5 Power Menu ............................................................................... 70

4.5.1 Power Up Control............................................................. 71

4.5.2 Hardware Monitor ............................................................ 72

4.6 Boot Menu ................................................................................. 73

4.7 Exit Menu................................................................................... 75

5. SOFTWARE SETUP....................................................................... 77

5.1 Install Operating System............................................................ 77

5.2 Start Windows............................................................................ 77

5.3 A7N266-C Series Motherboard Support CD ............................. 78

5.3.2 Installation Procedure....................................................... 79

5.3.3 Manual Installation of Drivers for Windows 98............... 80

6. SOFTWARE REFERENCE ........................................................... 82

6.1 ASUS Live Update..................................................................... 82

6.2 ASUS PC Probe ......................................................................... 83

6.3 3Deep Color Tuner..................................................................... 88

6.4 CyberLink PowerPlayer SE ....................................................... 90

6.5 CyberLink V ideoLive Mail ........................................................ 91

7. APPENDIX....................................................................................... 93

7.1 Modem Riser.............................................................................. 93

7.2.1 56K Software Modem ...................................................... 93

7.2.2 Primary/Seconday MR ..................................................... 93

7.2.3 Hardware Installation Procedure ...................................... 93

7.2.4 Software Setup in Windows 98 ........................................ 94

7.2 Glossary ..................................................................................... 95

INDEX ................................................................................................... 99

ASUS A7N266-C 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.

W ARNING! 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.

ASUS A7N266-C User’s Manual

1. INTRODUCTION

1.1 How 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.

Manual / Checklist

1. INTRODUCTION

Package Contents

(1) ASUS Motherboard (1) 40-pin 80-conductor ribbon

cable for internal UltraDMA100/66//33 IDE drives

(1) extra 40-pin 80-conductor

ribbon cable

(1) Ribbon cable for two 3.5”

floppy disk drives

(1) ASUS Support CD with drivers

and utilities (1) Bag of spare jumper caps (1) ASUS 2-port USB Connector

Set (1) ACR-A6CH Audio Card (1) Quick Set-up Guide and

Reference Card (Retail Box

only)

Optional Items

ASUS IrDA-compliant infrared module

ASUS AGP-DVI/TV Card

(1) I/O Shield (1) User’s Manual

ASUS A7N266-C User’s Manual 7

2. FEATURES

2.1 ASUS A7N266-C Motherboard

The ASUS A7N266-C motherboard is a high-performance motherboard powered by

AMD

415-D

performance. The A7N266-C meets today’s demand for a superior quality, fully integrated system.

Athlon™ XP / Athlon™ /Duron™ processors. It sports the new nVidia® nForce

™

chipset. The board offers users advanced features to provide superlative

2. FEATURES

Specifications

2.1.1 Core Specifications

• AMD® Athlon™ XP / Athlon™ / Duron™ Processor support: Features the latest

• North Bridge System Chipset: Features the brand new nVidia

• South Bridge System Chipset: Features the brand new nVidia

AMDs, 500MHz to 1.6 GHz and higher.

nForce

™

415-D integrated GPU/North Bridge controller chipset. The controller supports a 64/128bit DDR memory controller and up to 1.5 GB of 266/200MHz DDR SDRAM memory. The 128bit memory controller provides a phenomenal 4.2 GB/second system memory bandwidth.

nForce

™

MCP-D integrated peripheral South Bridge controller operates at 800MB/sec to communicate with the North Bridge for maximum bandwith required for PCI, USB and support for Fast Ethernet devices. The chipset has an integrated APU (Audio Processing Unit) that provides 6-Channel AC’97 compliant 3D positional

™

audio and Dolby

digital encoding. The controller supports standard UltraDMA/ 100/66/33 for burst mode data transfer rates of up to 100MB/sec. Separate data paths for each IDE channel are built-in to support up to four IDE devices. The controller supports six USB ports and 5 PCI slots and is PCI rev 2.2 compliant. The MCP supplies an LPC 1.0 interface along with A T legacy functions, a clock synthesizer, and meets ACPI 1.0 and PCI Power Management 1.1 specifications.

• PC2100 / PC1600 DDR Support: Equipped with three Double Data Rate Dual

Inline Memory Module (DDR DIMM) sockets to support up to 1.5GB of DDR SDRAM. DDR SDRAM supplies the highest bandwidth (64/128 bit) and offers the lowest latency currently available, improving the memory system’s ability to service multimedia requirements.

• Easy Frequency Changes: Now, easily overclock all important frequency

settings - simply and quickly with the onboard BIOS firmware.

• Smart BIOS: 2Mb firmware enables Vcore (core voltage) and CPU/DDR

SDRAM frequency adjustments, boot-block write protection, enhanced ACPI, DMI, Green and PnP Features Plus.

ASUS A7N266-C User’s Manual

2. FEATURES

2.1.2 Connections

• CPU socket: Socket A (462) for Athlon™ XP / Athlon™ / Duron™ processors.

• PCI Expansion Slots: Provides five 32-bit PCI slots, (PCI 2.2 compliant) with

no ISA. All PCI slots can support Bus Master PCI cards, such as SCSI or LAN cards. (PCI supports up to 133MB/s maximum throughput.) The MB supports Concurrent PCI, which allows multiple PCI transfers from PCI master bus to the memory and processor.

• IDE connectors: Dual-channel bus master IDE connectors support up to four

Ultra DMA/100/66, PIO Modes 3 & 4 IDE devices like two HDDs, one DVD and an R/W CD.

• AGP Pro Slot: Comes with an Accelerated Graphics Port Pro slot that

supports AGP cards for high performance, component level interconnect targeted at 3D graphical applications using a 4X mode bus. The slot is keyed to support only the latest 1.5 volt AGP cards.

• Floppy disk connector: Supports the floppy disk drive.

Specifications

2. FEATURES

• USB ports: Six Universal Serial Bus (USB) ports are available for connecting

USB devices such as a mouse and PDA.

• Serial ports: One 9-pin COM1 port and one COM2 header support all serial

devices.

• IrDA: Supports an optional infrared port module for a wireless interface.

• Game/MIDI connector. This connector supports a joystick or a game pad for

playing games.

• Parallel port: 25-pin port connects a parallel printer or other devices.

• PS/2 mouse port: Green 6-pin connector is for a PS/2 mouse.

• PS/2 keyboard port: Purple 6-pin connector is for a PS/2 keyboard.

• Onboard Power LED: Signals AC power is okay.

• Onboard AGP Warning LED: Signals AGP configuration problems.

• ATX power connector. Supplies the MB with ATX power. The power supply

must have at least 1A on the +5V standby lead (+5VSB).

2.1.3 Special Features

• ACR-A6CH Audio Card: 6-Channel audio along with modem connectivity!

The ACR-A6CH Audio Communications Riser card does it all! Specially designed as a “super-connector,” the ACR includes two onboard AC’97 audio CODEC chips; together, the chips supply phenomenal fidelity, including the new S/PDIF digital audio format. The ACR-A6CH supports a modem connection and three connectors can supply three sets of speakers for full 6-channel sound. See page 29 and 30 for layout and installation.

ASUS A7N266-C User’s Manual 9

2. FEATURES

Performance

2. FEATURES

2.1.4 Performance and Intelligence

• 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, 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.

• Super Multi-I/O: The multi-I/O chipset offers complete support for a variety of

I/O functions. Provides two high-speed UART compatible serial ports and one parallel port with EPP and ECP capabilities. UART2 can also be directed from COM2 to the Infrared Module for wireless connections. The Super I/O controller also supports a floppy disk drive, PS/2 keyboard, and PS/2 mouse.

• DDR SDRAM Optimized Performance: Normal Double Data Rate Synchronous

Dynamic Random Access Memory (DDR SDRAM) executes two actions per clock cycle and sets a new standard data transfer of up to 2.1 GB/s for 133MHz DDR

SDRAM and 1.6GB/s for 100MHz DDR DRAM. New nVidia

TwinBank

technology harnesses the DDR and “doubles the Double Data Rate:” the chipset further multiplies the bandwith by 2 to offer a fabulously broad 4.2 GBs of memory bandwidth! (At least two of three DDR DIMM modules must be installed to activate this feature.)

™

• Onboard Audio: Bundled with the ASUS ACR-A6CH card for superlative audio

support complete with two AC’97 CODEC chips. Multiple audio outputs are available, including S/PDIF_OUT digital audio plus connectors for 6-Channel speaker systems.

• APU: The chipset has an integrated APU (Audio Processing Unit) that provides

™

6-Channel AC’97 compliant 3D positional audio and Dolby

• C.O.P . Thermal Protection: W ith AMD

Athlon™ XP installed, the motherboard

digital encoding.

offers users ASUS C.O.P. automatic CPU Overheating Protection to prolong the life of the entire system. If the CPU temperature becomes excessive, the PC shuts down automatically.

• 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 employed in the OS, PCs can be ready around the clock but comply with energy saving standards. To fully utilize the ACPI benefits, use an ACPI-supported OS such as W indows XP.

• PC’99 Compliant: Both the BIOS and hardware levels of ASUS smart series

motherboards are PC’99 compliant. The new PC’99 requirements for systems and components are based on the following high-level goals: Support for Plugn-Play compatibility and power management to configure and manage all system components. in all major OS systems. Color-coded connectors and descriptive icons make identification easy as required by PC’99.

ASUS A7N266-C User’s Manual

2. FEATURES

• T wo Onboard LEDs: 1) A green LED lights up to indicate that power is available

onboard. It reminds users that standby power is available. The LED also serves as a reminder to disconnect the power supply when making any change to the configuration. 2) A red onboard warning LED lights up only if the wrong type of AGP card is connected to the board.

• Concurrent PCI: Concurrent PCI allows multiple PCI transfers from PCI master

busses to the memory and processor.

• SMBus: Features the System Management Bus interface used to physically

transport commands and information between SMBus devices.

• Desktop Management Interface (DMI): Supports DMI through BIOS that

allows hardware to communicate within a standard protocol and create a higher level of compatibility. (Requires DMI-enabled components.)

• Enhanced ACPI and Anti-Boot Virus Pr otection: Programmable BIOS (Flash

EEPROM) that offers enhanced ACPI for W indows XP/2000/ME compatibility , built-in firmware-based virus protection, and autodetection of most devices for a virtual automatic setup.

Intelligence

2. FEATURES

• 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.

• PC Health Monitoring: Provides an easy way to test and manage system status

information, such as CPU and system voltages, temperatures, and fan status through the onboard hardware ASUS ASIC and the bundled ASUS PC Probe.

• 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.

ASUS A7N266-C User’s Manual 11

2.2 Motherboard Components

See opposite page for locations.

Processor Support Socket A for AMD

M/B Components

2. FEATURES

Expansion Slots 5 PCI Slots .............................................................................. 17

2. FEATURES

Location

Athlon™ XP, Athlon™ and Duron™ CPUs 1

Chipsets nVidia

nVidia

Multi-I/O controller .................................................................. 9

2Mbit Programmable Flash EEPROM ..................................... 8

Main Memory Maximum 1.5GB support

3 DDR DIMM Sockets ............................................................. 3

1 Accelerated Graphics Port (AGP) Pro/4X Slot ................... 19

1 Advanced Communication Riser (ACR) Slot ..................... 15

System I/O 1 Floppy Disk Drive Connector ............................................... 7

2 IDE Connectors (UltraDMA/100 Support) ........................... 6

1 Parallel Port ........................................................................ 22

1 Serial Port (COM1) ............................................................. 24

1 Serial Header (COM2) ....................................................... 10

USB Connectors (Port 0 & Port 1) ........................................ 25

USB Headers (Ports 2/3/4/5) .................................................. 13

Front Panel / Infrared Header ................................................. 11

1 PS/2 Mouse Connector ....................................................... 20

1 PS/2 Keyboard Connector .................................................. 26

nForce™ IGP-128 North Bridge .................................. 2

nForce™ MCP-D South Bridge ................................. 12

Hardware Monitoring ASUS System Voltage Monitor (with ASUS ASIC) .............. 14

Network Feature (Network Models only)

Realtek LAN Chip controller ................................................ 16

LAN (RJ-45) Connector ........................................................ 21

Audio Features

1 Game/MIDI Port................................................................. 23

ACR-A6CH Audio card: See p. 31 and 32 for more info.

Power ATX Power Supply Connector ................................................. 5

Onboard Power LED .................................................. (Green) 4

Onboard AGP W arning LED ........................................(Red) 18

Form Factor ATX

ASUS A7N266-C User’s Manual

2. FEATURES

2.2.1 Component Locations

19 18

235

2. FEATURES

Motherboard Parts

17 16

20 22 23

8 9

26 25

ASUS A7N266-C User’s Manual 13

3. HARDWARE SETUP

3.1 Motherboard Layout

24.5cm (9.64in)

PS/2

T: Mouse B: Keyboard

Bottom:

Top:

USB1

RJ-45

USB2

COM1

Motherboard Layout

3. H/W SETUP

GAME_AUDIO

USBPWR01

Socket 462

PARALLEL PORT

CPU_FAN

A7N266-C

VDDR

CHA_FAN

PLED

Secondary IDE

Primary IDE

nVidia

nForce

IGP-128

Chipset

JEN BSEL0 BSEL1

Accelerated Graphics Port (AGP Pro)

WARNING

DDR DIMM1 (64/72 bit, 184-pin module)

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

0 1

2 3

4 5

NB_FAN

CMOS Power

ATX Power Connector

CR2032 3V Lithium Cell

FLOPPY

30.5cm (12.0in)

PCI 1

nVidia

MCP-D

Chipset

PCI 2

PCI 3

Realtek

RTL8100

PCI 4

PCI 5

ASIC

Monitor

ASUS

with Hardware

USBPWR45 USBPWR23

USB45 USB23

JTPWR

BUZZER

IDELED

ACR

(Grayed components are optional at the time of purchase.)

VID1 VID2 VID3 VID4

PANEL

BIOS

CLRTC

SMB

2Mb

Super

I/O

COM2

CHASSIS

ASUS A7N266-C User’s Manual

3. HARDWARE SETUP

3.2 Layout Contents

Motherboard Settings

1) LED p. 18

2) JEN p. 18 Jumperfree Setting (Enable / Disable)

3) BSEL0, BSEL1 p. 19

4) VID1, 2, 3, 4 p. 20 Voltage Regulator Output Volt. Setting (1.675V-1.85 V)

5) VDDR p. 20 DDR Voltage Setting (2.7V, 2.6V, 2.5V) USB01 / USB23 / USB45PWR

7) CLR_RTC p. 22 Clear RTC RAM (3 pin jumper)

Expansion Slots/Sockets

1) DIMM 1/2/3 p. 23 System Memory Support

2) Socket 462 p. 26 CPU Support

3) PCI 1/2/3/4/5 p. 27 32-bit PCI Bus Expansion Slots

4) AGP Pro p. 30 Accelerated Graphics Port Slot ACR

Connectors

1) PS2KBMS p. 33 PS/2 Mouse Port (6 pin female)

Onboard System Indicators (Green:power / Red: AGP warning)

CPU:DRAM Frequency Setting (100:100, 100:133, 133:100, 133:133)

p. 21 USB Device Wake-up (+5V / +5VSB)

p. 31 Advanced Communication Riser slot / ACR-A6CH

3. H/W SETUP

Layout Contents

2) PS2KBMS p. 33 PS/2 Keyboard Port (6 pin female)

3) USB p. 34 Universal Serial Bus Ports 1 & 2 (T w o 4 pin female)

4) PRINTER p. 34 Parallel Port (25 pin female)

5) RJ-45 p. 34 Fast Ethernet Port Connector (9 pin male)

6) COM 1 / 2 p. 35 Serial Port / Header (9 pin male, 10-1 pin male)

7) GAME p. 36 Game/MIDI Port (15 pin female) (optional)

8) IDELED p. 37 IDE Activity LED (2 pin)

9) FLOPPY p. 37 Floppy Disk Drive Connector (34 pin)

10) PRIMARY / SEC. IDE p. 38 IDE Connectors (Two 40-1 pin)

11) CPU, NB, CHA_FAN p. 39 CPU, NB, and Chassis Fan Connectors (Three 3 pin)

12) IrDA p. 40 Infrared Connector (10-1 pin)

13) ATXPWR p. 41 Power Supply Connectors (20 pin block)

14) CHASSIS p. 42 Chassis Open Alarm Lead (4 pin)

15) USB_23 / USB_45 p. 42 USB Headers (10-1 pin)

16) JTPWR p. 43 Power Supply Thermal Sensor Connector (2 pin)

17) SMB p. 43 SMBus Connector (5-1 pin)

ASUS A7N266-C User’s Manual 15

18) PWR.LED p. 44 System Power LED Lead (3 pin)

19) KEYLOCK p. 44 System Keyboard Lock Switch Lead (2 pin)

20) SPEAKER p. 44 System Warning Speaker Lead (4 pin)

21) LED p. 44 System Message LED Lead (2 pin)

22) SMI p. 44 System Management Interrupt Lead (2 pin)

23) PWR p. 44 ATX / Soft-Off Switch Lead (2 pin)

24) RESET p. 44 Reset Switch Lead (2 pin)

Layout Contents

3. H/W SETUP

3. HARDWARE SETUP

ASUS A7N266-C User’s Manual

3. HARDWARE SETUP

3.3 Hardware Setup Procedure

Complete these procedures before powering up the computer:

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 cables

6. Configure the BIOS parameter settings

All pertinent information to configure settigns and power up the computer for the first time appears in the following pages.

3.4 Motherboard Settings

This section tells you how to change motherboard function settings through the switches and/or jumpers.

W ARNING! Computer motherboards and expansion cards contain very delicate

Integrated Circuit (IC) chips. To avoid damaging them due to static electricity, follow these precautions whenever you work on your computer.

1. Unplug the computer when working on the internal components.

2. Use a grounded wrist strap or touch a safely grounded object or to a metal object, such as the power supply case, before handling computer components.

3. Hold components by the edges and try not to touch the IC chips on them.

4. Whenever you uninstall any component, place the components on a grounded antistatic pad or in the bag that came with the components.

5. Before you install or remove any component, ensur e that the A TX power

supply is switched off or the power cord is detached from the power supply. Failure to do so may cause severe damage to the motherboard,

peripherals, and/or components.

3. H/W SETUP

Motherboard Settings

ASUS A7N266-C User’s Manual 17

3. HARDWARE SETUP

1) Onboard System Indicators (LED - Light Emitting Diodes)

The GREEN onboard LED indicates that the system power is okay. This light also lights when the PC is in suspend or soft-off mode. The RED onboard warning LED lights up only if the wrong type of AGP card is connected to the board: (See AGP Pro , p. 28)

Motherboard Settings

3. H/W SETUP

A7N266-C Onboard LED

2) Jumperfree Setting (JEN)

Normally, all changes to frequency settings can be made through BIOS immediately upon starting up the computer. Therefore, the default setting for this jumper, [2-3] enables easy BIOS adjustments. If the BSEL jumpers are used, it is necessary to set this JEN jumper to [1-2].

A7N266-C

010101

Standby

Power

PLED

OFF

Powered

Off

WARNING

Incorrect

AGP Card

OFF

Correct

AGP Card

A7N266-C

010101

A7N266-C Jumper Mode Setting

ASUS A7N266-C User’s Manual

Disable

JEN

Enable

(Default)

3. HARDWARE SETUP

3) CPU:DRAM Frequency Setting (BSEL0, BSEL1)

This jumper sets the external CPU:DRAM frequency ratio for normal operation. The default operates at 100:100 Mhz. Note: To make any changes to jumper speed settings, the JEN jumper must be set to [1-2].

CPU DRAM BSEL0 BSEL1 JEN

133 133 [1-2] [1-2] [1-2] 133 100 [2-3] [1-2] [1-2] 100 133 [2-3] [2-3] [1-2] 100 100 [1-2] (Default) [2-3] (Default) [1-2]

A7N266-C

010101

A7N266-C CPU External Frequency Selection

BSEL0 BSEL1

CPU 133MHz

DRAM 133MHz

BSEL0 BSEL1

CPU 100MHz

DRAM 133MHz

312

BSEL0 BSEL1

CPU 133MHz

DRAM 100MHz

312

BSEL0 BSEL1

CPU 100MHz

DRAM 100MHz

(Default)

3. H/W SETUP

Motherboard Settings

ASUS A7N266-C User’s Manual 19

3. HARDWARE SETUP

4) 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.

A7N266-C

010101

VID1 VID2 VID3 VID4

(CPU Default)

VID1

VID2

VID3

VID4

1.85/1.825Volts

VID1 VID2 VID3 VID4

1.80/1.775Volts

A7N266-C CPU Core Voltage

VID1 VID2 VID3 VID4

1.75/1.725Volts

VID1 VID2 VID3 VID4

1.70/1.675Volts

Selection

5) DDR Voltage Setting (VDDR)

This jumper controls the voltage output to the DDR memory DRAMS. Less strain is placed on components at lower voltage settings.

Setting VDDR

2.7V [1-2]

2.6V [2-3] (default)

2.5V [3-4]

A7N266-C

010101

A7N266-C VDDR Setting

ASUS A7N266-C User’s Manual

VDDR

1 22

2.7V

2.6V

(Default)

2.5V

3. HARDWARE SETUP

6) USB Device Wake-up (USB01PWR / USB23PWR / USB45PWR)

Set these jumpers to +5V to allow wake up from the S1 sleep state (CPU stopped; RAM refreshed; system running in low power mode). The default setting for the three jumpers is [1-2] to select +5V, since not all computers have the appropriate power supply.

NOTE: This feature requires an ATX power supply that can supply at least 2A on the +5VSB lead when these jumpers are set to +5VSB. Otherwise, the system does not power up. The total current consumed must NOT exceed the power supply capability (+5VSB) for normal working conditions or in sleep mode.

A7N266-C

010101

USBPWR01

A7N266-C USB Device Wake Up

+5V

(Default)

+5V

(Default)

+5VSB

USBPWR45 USBPWR23

+5VSB

ASUS A7N266-C User’s Manual 21

7) Clear RTC RAM (2-pin CLR_RTC)

This jumper allows you to reset the Real Time Clock (RTC) RAM in CMOS. The RAM data in CMOS, that include system setup information such as system passwords, is powered by the onboard button cell battery . Erase the R TC RAM:

1. Turn OFF the computer and unplug the power cord.

2. Remove the battery.

3. Change the jumper from “normal” to “clear CMOS” for a few seconds then replace the jumper cap to the “normal” position.

4. Re-install the battery.

5. Plug the power cord and turn ON the computer.

6. Hold down the <Del> key during boot-up to enter BIOS setup.

Motherboard Settings

3. H/W SETUP

3. HARDWARE SETUP

A7N266-C

010101

CLRTC

A7N266-C Clear RTC RAM

Normal Clear CMOS

(Default)

ASUS A7N266-C User’s Manual

3. HARDWARE SETUP

3.5 System Memory

3.5.1 DDR DIMM Support

The three DDR DIMM sockets support 2.5Volt (power level) Double Data Rate Synchronous Dynamic Random Access Memory (DDR SDRAM) of 64MB, 128MB, 256MB and 512MB to form a memory size between 64MB to 1.5GB. One side (with memory chips) of the DIMM takes up one row on the motherboard.

™

TwinBank

mode”, at least 2 or more DIMM modules must be installed; with only one DIMM installed, the memory functions at only 64-bit, normal mode.

~ DDR DIMMs on this motherboard support only 184-pin, unbuffered, non-ECC memory . DDR DIMMs with CAS Latency of 2.0 (PC2100A) or 2.5 (PC2100B) are both supported. (See the General DIMM memo on page 25 for details.)

Configuration Rules:

1. DIMMs must be populated consecutively, in order, starting with DIMM Socket 1, then 2 and 3.

Technology: to function at 128-bit, 4.2 GB/second “Dual channel DDR

2. The total number of banks must not exceed five: ie.: two dual load modules and one single load module. Note: Do not populate DIMM Socket 3 with any dual load modules.

Memory Population:

Memory loads must be distributed according to the various possible combinations shown in the following table:

Capacity DIMM 1 (A0) DIMM2 (B0) DIMM3 (B1)

128 MB 64MB - 1B or 2B 64MB - 1B or 2B X 192 MB 128MB - 1B or 2B 64MB - 1B or 2B X 256 MB 128MB - 1B or 2B 128MB - 1B or 2B X

128MB - 1B or 2B 64MB - 1B or 2B 64MB - 1B

384 MB 256MB - 1B or 2B 128MB - 1B or 2B X

128MB - 1B or 2B 128MB - 1B or 2B 128MB - 1B

512 MB 256MB - 1B or 2B 256MB - 1B or 2B X

256MB - 1B or 2B 128MB - 1B or 2B 128MB - 1B

786 MB 512MB - 1B or 2B 256MB - 1B or 2B X

256MB - 1B or 2B 256MB - 1B or 2B 256MB - 1B

3. H/W SETUP

System Memory

1 GB 512MB - 1B or 2B 512MB - 1B or 2B X

512MB - 1B or 2B 256MB - 1B or 2B 256MB - 1B

1.25 GB 512MB - 1B or 2B 512MB - 1B or 2B 256MB - 1B

1.5 GB 512MB - 1B or 2B 512MB - 1B or 2B 512MB - 1B

Table Legend:

1B = 1 bank: a single load module. 2B = 2 bank: a dual load module.

ASUS A7N266-C User’s Manual 23

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.

System Memory

3. H/W SETUP

3. HARDWARE SETUP

A7N266-C

010101

104 Pins

80 Pins

A7N266-C 184-Pin DDR DIMM Sockets

Installing a DIMM:

1. Unlock a DIMM socket by pressing the retaining clips outward.

2. Align a DIMM on the socket such that the notches on the DIMM exactly match the notches in the socket.

3. Firmly insert the DIMM into the socket until the retaining clips snap back in place.

Unlocked Retaining Clip Locked Retaining Clip

24 ASUS A7N266-C User’s Manual

3. HARDWARE SETUP

Removing a DIMM:

1. Simultaneously press the retaining clips outward to unlock the DIMM.

2. Carefully remove the DIMM from the socket.

3.5.4 General DIMM Memo

•

See the Configuration Rules on page 21 for essential installation parameters.

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

• ASUS motherboards support SPD (Serial Presence Detect) DIMMs. This is the

memory of choice for best performance vs. stability.

• BIOS shows DDR RAM memory on bootup screen.

•

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

• Single load DDR DIMMs are available in 64, 128, and 256MB; dual load modules are available in 128, 256, and 512MB.

3. H/W SETUP

System Memory

ASUS A7N266-C User’s Manual 25

3. HARDWARE SETUP

3.6 Central Processing Unit (CPU)

The motherboard provides a Socket 462 or Socket A for CPU installation. A fan and heatsink should be attached to the CPU to prevent overheating.

A7N266-C

010101

CPU NOTCH TO INNER CORNER

AMD™ CPU

A7N266-C Socket 462

1. Locate the Socket 462 and open it by pulling the lever gently sideways away from the socket. Then lift the lever upwards. The socket lever must be fully opened (90 to 100 degrees).

2. Insert the CPU with the correct orientation. The notched corner of the CPU must be oriented toward the inner corner of the socket base nearest to the lever hinge.

CAUTION! The CPU should drop easily into

place. Do not force the CPU into the socket to avoid bending the pins. If the CPU does not fit, check its alignment and look for bent pins.

LOCK

LEVER

CPU NOTCH

3. Once completely inserted, press the CPU firmly and close the socket lever until it snaps shut.

4. Place the CPU fan and heatsink on the CPU. The heatsink should entirely cover the CPU. Carefully attach the heatsink locking brace to the plastic clips on the socket base. With the added weight of the CPU fan and heatsink locking brace, no extra force is required to keep the CPU in place.

CAUTION! Take care not to scrape the motherboard surface when mounting a

clamp-style processor fan, or else damage may occur . When mounting a heatsink onto your CPU, make sure that exposed CPU capacitors do not touch the heatsink, or damage may occur!

NOTE! Do not neglect to set the correct Bus Frequency and leave the CPU

Multiple setting at default to avoid start-up problems.

26 ASUS A7N266-C User’s Manual

3. HARDWARE SETUP

3.7 Expansion Cards

In the future, you may need to install expansion cards. The motherboard has five PCI expansion slots to support these cards. Follow the steps in the next section when installing expansion cards.

W ARNING! Unplug the system power cord when adding or removing expansion

cards or other system components. Failure to do so may cause severe damage to both the motherboard and expansion cards.

3.7.1 Installing an Expansion Card

1. Read the documentation that comes with the expansion card and make any necessary hardware settings for the card before installing it.

2. Remove the system unit cover and the bracket plate on the slot you intend to use. Keep the screw for later use.

3. Align the card connectors with the slot and press firmly until the card fits in place.

4. Secure the card to the slot with the screw you removed earlier.

5. Replace the system cover.

6. Change the necessary BIOS settings, if any. (see section 4.4.3 PCI Configuration to change the settings.)

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

ASUS A7N266-C User’s Manual 27

3.7.2 Assigning 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 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.

CPU Installation

3. H/W SETUP

3. HARDWARE SETUP

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 ISA or PCI devices.

28 ASUS A7N266-C User’s Manual

3. HARDWARE SETUP

Interrupt Request Table for this Motherboard

INT-A INT-B INT-C INT-D INT-E

PCI slot 1 shared ———— PCI slot 2 ———shared — PCI slot 3 ——shared —— PCI slot 4 — used ——— PCI slot 5 shared ———— AGP ————used ACR slot shared ———— LAN controller ——shared —— USB controller ———shared —

3. H/W SETUP

Expansion Cards

ASUS A7N266-C User’s Manual 29

3. HARDWARE SETUP

3.7.3 Accelerated Graphics Port (AGP) Pro Slot

This motherboard has an Accelerated Graphics Port (AGP) Pro slot to support the new generation graphics cards with ultra-high memory bandwidth.

A7N266-C

010101

A7N266-C Accelerated Graphics Port (AGP PRO)

AGP Card without Retention Notch

20-pin bay

Rib (inside slot) Rib

TOP VIEW

28-pin bay

Expansion Cards

3. H/W SETUP

CAUTION! The AGP Pro slot is shipped with a warning label over the 20-pin bay.

DO NOT remove this label and the safety tab underneath it if you are using an AGP card without a retention notch. Removing may cause the card to shift and may cause damage to the card, slot, and motherboard. Remove the label and tab ONLY if you are using an AGP Pro card. Use a rigid tip, such as a pen tip, to dislodge the white tab.

IMPORTANT: Only 1.5V AGP cards are supported. ASUS® AGP 4X cards are

rated for both 1.5 and 3.3 Volts. Early AGP cards only operate at 3.3 volts and will not fit properly into the new AGP 4X slots. See examples of both types above. If the wrong type of AGP card is installed, such as an SiS305, or any other 3.3V AGP card, the onboard RED warning LED lights up immediately. So long as the LED is illuminated and the wrong card remains installed, the system power will not turn on, an automatic safety precaution to prevent damage to the motherboard.

An early 3.3V AGP card:

Do not use.

Removing the tab

A new 1.5 / 3.3V AGP card:

OKAY to use.

30 ASUS A7N266-C User’s Manual

+ 72 hidden pages