User Guide Motherboard A7S266-VM/U2
E1191 First Edition V1 January 2003 Copyright © 2003 ASUSTeK COMPUTER INC. All Rights Reserved. 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”).
Contents Notices ............................................................................................ v Safety information .......................................................................... vi About this guide ............................................................................. vii ASUS contact information ............................................................ viii A7S266-VM/U2 specifications summary ........................................
Contents 2.3 2.4 2.5 2.6 2.7 Main Menu ........................................................................ 2-10 2.3.1 Primary and Secondary Master/Slave ................. 2-12 2.3.2 Keyboard Features .............................................. 2-14 Advanced Menu ............................................................... 2-15 2.4.1 Chip Configuration ............................................... 2-16 2.4.2 I/O Device Configuration ...................................... 2-18 2.4.
Notices 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.
Safety information Electrical safety • To prevent electrical shock hazard, disconnect the power cable from the electrical outlet before relocating the system. • When adding or removing devices to or from the system, ensure that the power cables for the devices are unplugged before the signal cables are connected. If possible, disconnect all power cables from the existing system before you add a device.
About this guide Conventions used in this guide To make sure that you perform certain tasks properly, take note of the following symbols used throughout this manual. WARNING/DANGER: Information to prevent injury to yourself when trying to complete a task. CAUTION: Information to prevent damage to the components when trying to complete a task. IMPORTANT: Information that you MUST follow to complete a task. NOTE: Tips and additional information to aid in completing a task.
ASUS contact information ASUSTeK COMPUTER INC. (Asia-Pacific) Address: General Tel: General Fax: General Email: 150 Li-Te Road, Peitou, Taipei, Taiwan 112 +886-2-2894-3447 +886-2-2894-3449 info@asus.com.tw Technical Support MB/Others (Tel): Notebook (Tel): Desktop/Server (Tel): Support Fax: Support Email: Web Site: +886-2-2890-7121 (English) +886-2-2890-7122 (English) +886-2-2890-7123 (English) +886-2-2890-7698 tsd@asus.com.tw www.asus.com.
A7S266-VM/U2 specifications summary CPU Socket A for AMD Athlon XP/Athlon/Duron 2 GHz+ Thoroughbred core CPU ready Chipset Northbridge: SiS 740 Southbridge: SiS 962L Front Side Bus (FSB) 266/200Mhz Memory 2 x DDR DIMM Sockets Max. 2 GB unbuffered PC2100/1600 non-ECC DDR SDRAM 2 x SDR DIMM Sockets Max. 2 GB unbuffered PC133/100 non-ECC SDRAM (Note: DDR and SDR memory cannot be used on A7S266VM/U2 simultaneously.
A7S266-VM/U2 specifications summary BIOS features 2Mb Flash ROM, CrashFree BIOS 2, EEPROM, ASUS JumperFree, Award BIOS with ACPI, DMI2.0, PnP, WfM2.0, Green, TCAV (Trend Chip Away Virus) Industry standard PCI 2.2, USB 2.0 Manageability WfM2.0, DMI2.0, WOR, WOL Form Factor Micro-ATX form factor: 9.6 in x 9.6 in (24.5 cm x 24.
This chapter gives information about the ASUS A7S266-VM/U2 motherboard that came with the system.This chapter includes the motherboard layout, jumper settings, and connector locations.
1.1 Welcome! Thank you for buying the ASUS® A7S266-VM/U2 motherboard! The ASUS A7S266-VM/U2 motherboard is loaded with the most advanced technologies to deliver the maximum performance for socket A processors. This motherboard is loaded with value-added features for guaranteed consumer satisfaction. Unique ASUS features such as ASUS C.O.P., ASUS JumperFree, ASUS CrashFree BIOS 2 and more are included to ensure the best user experience and value in a motherboard.
1.3 Motherboard components Before you install the motherboard, learn about its major components and available features to facilitate the installation and future upgrades. Refer to the succeeding pages for the component descriptions.
1-4 1 CPU Sockets. Socket 462 (Socket A) Zero Insertion Force (ZIF) socket for the AMD Athlon XP 2200+/Athlon/Duron Processors, with frequency of 2200+ or higher. 2 NorthBridge Controller. The SIS 740 NorthBridge controller supports 266 Mhz front side bus. 3 DDR DIMM Sockets. These two 184-pin DIMM sockets support up to 2GB using non-ECC PC2100/1600 DDR DIMMs 4 SDRAM DIMM Sockets. These two 168-pin DIMM sockets support up to 2GB using non-ECC PC133/100 SDRAM DIMMs.
LAN PHY. The SiS 962L integrated 10/100Mbps Fast Ethernet with Realtek external PHY allows connection to a Local Area Network (LAN) through a network hub. (on LAN model only) 16 PS/2 mouse port. This green 6-pin connector is for a PS/2 mouse. 17 RJ-45 port. This port allows connection to a Local Area Network (LAN) through a network hub. (on LAN model only) 18 Parallel port. This 25-pin port connects a parallel printer, a scanner, or other devices. 19 MIDI/Game port.
1.4 Motherboard layout 24.5cm (9.64in) USBPWR12 PS/2 CPU_FAN1 T: Mouse B: Keyboard 2 3 0 1 2 3 ATX Power Connector 0 1 24.5cm (9.
1.5 Before you proceed Take note of the following precautions before you install motherboard components or change any motherboard settings. 1. Unplug the power cord from the wall socket before touching any component. 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 components to avoid damaging them due to static electricity. 3. Hold components by the edges to avoid touching the ICs on them. 4.
1.6 Motherboard installation Before you install the motherboard, study the configuration of your chassis to ensure that the motherboard fits into it. The motherboard uses the micro-ATX form factor that measures 9.6 inches x 9.6 inches (24.5 cm x 24.5 cm). Make sure to unplug the power cord before installing or removing the motherboard. Failure to do so may cause you physical injury and damage motherboard components. 1.6.
1.7 Central Processing Unit (CPU) The motherboard provides a Socket A (462) for CPU installation. AMD processors offer gigahertz speeds to support all the latest computing platforms and applications. The A7S266-VM/U2 supports AthlonTM XP/AthlonTM and DuronTM processors. CPU NOTCH TO INNER CORNER LOCK LEVER ® AMD™ CPU CPU NOTCH A7S266-VM/U2 A7S266-VM/U2 Socket 462 1.7.1 Installing the CPU Follow these steps to install a CPU: 1.
1.8 System memory The motherboard has two Double Data Rate (DDR) DIMM sockets and two Single Data Rate (SDR) DIMM sockets that supports up to 2GB non-ECC PC2100/1600 DDR and PC133/100 SDRAM DIMMs. A DDR DIMM has the same physical dimensions as an SDR DIMM, but it has a 184-pin footprint compared to the 168-pin of the SDR DIMM. Also, a DDR DIMM is single notched while an SDR DIMM is double notched.
1.9 Expansion slots The A7S266-VM/U2 motherboard has four (4) expansion slots. The following subsections describe the slots and the expansion cards that they support. 1.9.1 Configuring an expansion card After physically installing the expansion card, configure the card by adjusting the software settings. 1. Turn on the system and change the necessary BIOS settings, if any. 2. Assign an IRQ to the card. Refer to the tables below. 3. Install the software drivers for the expansion card. 1.9.
1.10 Jumpers This section describes and illustrates the jumpers on the motherboard. 1. USB device wake-up (3-pin USBPWR12,USBPWR34,USBPWR56) Set these jumpers to +5V to wake up the computer from S1 sleep mode (CPU stopped, DRAM refreshed, system running in low power mode) using the connected USB devices. Set to +5VSB to wake up from S3 sleep mode (no power to CPU, DRAM in slow refresh, power supply in reduced power mode).
1.11 Connectors This section describes and illustrates the connectors on the motherboard. 1. IDE connectors (40-1 pin IDE1, IDE2) This connector supports the provided UltraDMA 66/100/133 IDE hard disk ribbon cable. Connect the cable’s blue connector to the primary (recommended) or secondary IDE connector, then connect the gray connector to the UltraDMA 66/100/133 slave device (hard disk drive) and the black connector to the UltraDMA 66/100/133 master device.
2. CPU and Chassis Fan Connectors (3-pin CPU_FAN1, CHA_FAN1) The two fan connectors support cooling fans of 350mA (4.2 Watts) or a total of 1A (12W) at +12V. Orient the fans so that the heat sink fins allow air flow to go across the onboard heat sinks instead of the expansion slots. The fan wiring and plug may vary depending on the fan manufacturer. Connect the fan cable to the connector matching the black wire to the ground pin.
4. USB headers (10-1 pin USB56, USB34) If the USB ports on the rear panel are inadequate, a USB header is available for additional USB ports. The USB header complies with USB 2.0 specification that supports up to 480 Mbps connection speed. This speed advantage over the conventional 12 Mbps on USB 1.1 allows faster Internet connection, interactive gaming, and simultaneous running of high-speed peripherals. You may connect an optional USB 2.0/GAME module, connect the USB cable to this header.
6. Internal audio connectors (4-pin AUX1, CD1) (on audio models only) These connectors allow you to receive stereo audio input from sound sources such as a CD-ROM, TV tuner, or MPEG card. CD1 AUX1 (Black) (White) Left Audio Channel Ground Right Audio Channel ® A7S266-VM/U2 A7S266-VM/U2 Internal Audio Connectors 7.
9. infrared connector (5-1 pin IR_CON1) These connectors support an optional wireless transmitting and receiving infrared module. The module monts to a small opening on the system chassis that supports this feature. You must also configure the UART2 Use As parameter in BIOS to set UART2 for use with IR. Use the ten pins as shown in Back View and connect a ribbon cable from the module to the motherboard IR_CON1 connector according to the pin definitions.
11. Serial connector (9-pin COM2 ) This 9-pin connector connects to the Serial COM2 bracket. Connect the COM2 cable to this connector and install the bracket on an available slot in the rear panel of the chassis. COM2 PIN 1 ® A7S266-VM/U2 A7S266-VM/U2 Serial COM2 Bracket 12. System panel connector (20-pin PANEL1) This connector accommodates several system front panel functions.
• System Management Interrupt Lead (2-pin SMI#) This 2-pin connector permits switching to suspend mode, or “Green” mode, in which system activity is instantly decreased to save power and to expand the life of certain system components. • Reset Switch (2-pin RESET) This 2-pin connector connects to the case-mounted reset switch for rebooting the system without turning off the power switch.
1-20 Chapter 1: Motherboard Information
This chapter gives information about the ASUS A7S266-VM/U2 Basic Input/Output System (BIOS).This chapter includes updating the BIOS using the ASUS AFLASH BIOS that is bundled with the support CD.
2.1 Managing and Updating your BIOS It is recommended that you save a copy of the motherboard’s original BIOS to a bootable floppy disk in case you need to reinstall the original BIOS later. 2.1.1 Using ASUS EZ Flash to update the BIOS The ASUS EZ Flash feature allows you to easily update the BIOS without having to go through the long process of booting from a diskette and using a DOS-based utility.
5. At the prompt, “Please Enter File Name for NEW BIOS: _”, type in the BIOS file name that you downloaded from the ASUS website, then press . EZ Flash will automatically access drive A to look for the file name that you typed. When found, the following message appears on screen. If you accidentally typed in a wrong BIOS file name, the error message, “WARNING! File not found.” appears. Press to remove the message, then type in the correct file name. Press . 6.
The BIOS information in the above screen is for reference only. What you see on your screen may not be exactly the same as shown. 2.1.2 Using AFLASH to update the BIOS Creating a bootable disk AFLASH.EXE is a Flash Memory Writer utility that updates the BIOS by uploading a new BIOS file to the programmable flash ROM on the motherboard. This file works only in DOS mode.
5. Select 1. Save Current BIOS to File from the Main menu and press . The Save Current BIOS To File screen appears. 6. Type a filename and the path, for example, A:\XXX-XX.XXX, then press . Updating the BIOS Update the BIOS only if you are sure that the new BIOS revision will solve your problems. Careless updating may result to more problems with the motherboard! 1.
6. When prompted to confirm the BIOS update, press Y to start the update. 7. The utility starts to program the new BIOS information into the Flash ROM. The boot block is updated automatically only when necessary. When the programming is done, the message “Flashed Successfully” appears. 8. Follow the onscreen instructions to continue. DO NOT turn off the system while updating the BIOS. This may cause boot problems.
2.1.3 CrashFree BIOS 2 (BIOS Auto-recovery Procedure) The CrashFree BIOS 2 feature allows users to boot the computer from a floppy disk and update the BIOS using AFLASH.EXE or EZ Flash Utility in case the original BIOS fails or gets corrupted. If the user doesn’t have a bootable floppy disk with the original BIOS, an auto-recovery procedure can be performed using the support CD. It is strongly recommended to save a copy of the motherboard’s original BIOS along with the AFLASH.EXE utility to a bootable disk.
2.2 BIOS Setup program Use the BIOS Setup program when you are installing a motherboard, reconfiguring your system, or prompted to “Run Setup”. This section explains how to configure your system using this utility. Even if you are not prompted to use the Setup program, you may want to change the configuration of your computer in the future. For example, you may want to enable the security password feature or make changes to the power management settings.
2.2.2 Legend bar At the bottom of the Setup screen is a legend bar. The keys in the legend bar allow you to navigate through the various setup menus. The following table lists the keys found in the legend bar with their corresponding functions.
Sub-menu Note that a right pointer symbol (as shown on the left) appears to the left of certain fields. This pointer indicates that you can display a sub-menu from this field. A sub-menu contains additional options for a field parameter. To display a sub-menu, move the highlight to the field and press . The sub-menu appears. Use the legend keys to enter values and move from field to field within a sub-menu as you would within a menu. Use the key to return to the main menu.
System Date [XX/XX/XXXX] Sets the system to the date that you specify (usually the current date). The format is month, day, year. Valid values for month, day, and year are Month: (1 to 12), Day: (1 to 31), Year: (up to 2099). Use the or + keys to move between the month, day, and year fields. Legacy Diskette A [1.44M, 3.5 in.] Sets the type of floppy drive installed. Configuration options: [None] [360K, 5.25 in.] [1.2M , 5.25 in.] [720K , 3.5 in.] [1.44M, 3.5 in.] [2.88M, 3.5 in.
Halt On [All Errors] This field specifies the types of errors that will cause the system to halt. Configuration options: [All Errors] [No Error] [All but Keyboard] [All but Disk] [All but Disk/Keyboard] Installed Memory [XXX MB] This field automatically displays the amount of conventional memory detected by the system during the boot process. 2.3.1 Primary and Secondary Master/Slave Type [Auto] Select [Auto] to automatically detect an IDE hard disk drive.
If no drive is installed or if you are removing a drive and not replacing it, select [None]. Other options for the Type field are: [CD-ROM] - for IDE CD-ROM drives [LS-120] - for LS-120 compatible floppy disk drives [ZIP] - for ZIP-compatible disk drives [MO] - for IDE magneto optical disk drives [Other ATAPI Device] - for IDE devices not listed here After making your selections on this sub-menu, press the key to return to the Main menu.
Maximum LBA Capacity This field shows the drive’s maximum LBA capacity as calculated by the BIOS based on the drive information you entered. Multi-Sector Transfers [Maximum] This option automatically sets the number of sectors per block to the highest number that the drive supports. Note that when this field is automatically configured, the set value may not always be the fastest value for the drive. You may also manually configure this field.
Boot Up NumLock Status [On] This field enables users to activate the Number Lock function upon system boot. Configuration options: [Off] [On] Keyboard Auto-Repeat Rate [12/Sec] This controls the speed at which the system registers repeated keystrokes. Options range from 6 to 30 characters per second.
PS/2 Mouse Function Control [Auto] The default setting [Auto] allows the system to detect a PS/2 mouse at startup. If a mouse is detected, the BIOS assigns IRQ12 to the PS/2 mouse. Otherwise, IRQ12 can be used for expansion cards. When you set this field to [Enabled], BIOS reserves IRQ12, whether or not a PS/2 mouse is detected at startup. Configuration options: [Enabled] [Auto] USB Legacy Support [Auto] This motherboard supports Universal Serial Bus (USB) devices.
The SDRAM parameters (items 2~5) become configurable only when you set the SDRAM Configuration to [User Defined]. SDRAM CAS Latency [3T] This item controls the latency between the SDRAM read command and the time the data actually becomes available. SDRAM RAS to CAS Delay [4T] This item controls the latency between the DDR SDRAM active command and the read/write command. SDRAM RAS Precharge Time [4T] This item controls the idle clocks after issuing a precharge command to the DDR SDRAM.
2.4.2 I/O Device Configuration Floppy Disk Access Control [R/W] When set to [Read Only], this parameter protects files from being copied to floppy disks by allowing reads from, but not writes to, the floppy disk drive. The default setting [R/W] allows both reads and writes. Configuration options: [R/W] [Read Only] Onboard Serial Port 1 [3F8H/IRQ4], Port 2 [2F8H/IRQ3] These fields allow you to set the addresses for the onboard serial connectors.
Onboard MIDI I/O [Disabled] This field allows you to select the I/O address for the MIDI port. Configuration options: [Disabled] [330H-331H] [300H-301H] 2.4.3 PCI Configuration Slot 1, Slot 2, Slot 3, Slot 4 IRQ [Auto] These fields assign the IRQ for each PCI slot. The default setting for each field is [Auto], which utilizes auto-routing to determine IRQ assignments.
2.4.3.1 Onboard PCI Devices Control Onboard LAN Controller [Enabled] This field allows you to enable or disable the onboard LAN controller. Configuration options: [Disabled] [Enabled] Onboard LAN Boot ROM [Disabled] This field allows you to enable or disable the option ROM in the onboard LAN chipset. Configuration options: [Disabled] [Enabled] Onboard AC97 Audio Controller [Enabled] This field allows you to disable or set to [Auto] the onboard AC97 audio controller.
2.5 Power Menu The Power menu allows you to reduce power consumption. This feature turns off the video display and shuts down the hard disk after a period of inactivity. Power Management [User Defined] This field allows you to activate or deactivate the automatic power saving features. When set to [Disabled], the power management features do not function regardless of the other settings on this menu.
HDD Power Down [Disabled] Shuts down any IDE hard disk drives in the system after a period of inactivity as set in this user-configurable field. This feature does not affect SCSI hard drives. Configuration options: [Disabled] [1 Min] [2 Min] [3 Min]...[15 Min] ACPI Suspend To RAM [Enabled] This field allows you to enable or disable the ACPI Suspend-to-RAM feature. To support this feature, the +5VSB of the power supply should have the capacity to provide more than 720mA current.
Power Up On PCI Card [Disabled] When set to [Enabled], this parameter allows you to turn on the system through a PCI LAN or modem card. This feature requires an ATX power supply that provides at least 1A on the +5VSB lead. Configuration options: [Disabled] [Enabled] Power On By PS/2 Keyboard [Disabled] This parameter allows you to use specific keys on the keyboard to turn on the system. This feature requires an ATX power supply that provides at least 1A on the +5VSB lead.
VCORE Voltage, +3.3V Voltage, +5V Voltage, +12V Voltage The onboard hardware monitor automatically detects the voltage output through the onboard voltage regulators. If any of the monitored items is out of range, the following error message appears: “Hardware Monitor found an error. Enter Power setup menu for details”. You will then be prompted to “Press F1 to continue or DEL to enter SETUP”. 2.
Other Boot Device [INT18 Device (Network)] Configuration options: [Disabled] [SCSI Boot Device] [INT18 Device (Network)] Plug & Play O/S [No] This field allows you to use a Plug-and-Play (PnP) operating system to configure the PCI bus slots instead of using the BIOS. When [Yes] is selected, interrupts may be reassigned by the OS. If you installed a non-PnP OS or if you want to prevent reassigning of interrupt settings, keep the default setting [No].
2.7 Exit Menu Pressing does not immediately exit this menu. Select one of the options from this menu or from the legend bar to exit. Exit Saving Changes Once you are finished making your selections, choose this option from the Exit menu to ensure the values you selected are saved to the CMOS RAM. The CMOS RAM is sustained by an onboard backup battery and stays on even when the PC is turned off. When you select this option, a confirmation window appears. Select [Yes] to save changes and exit.
Chapter 3 Starting Up This chapter helps you power up your system and install drivers and utilities that came with the support CD.
3.1 Install an operating system The A7S266-VM/U2 motherboard supports Windows ME/NT/2000/XP operating systems (OS). Always install the latest OS version and corresponding updates so you can maximize the features of your hardware. Because motherboard settings and hardware options vary, use the setup procedures presented in this chapter for general reference only. Refer to your OS documentation for more information. 3.
3.2.2 Drivers menus SiS Mini IDE Driver Click this item to load the installation wizard and install the SiS mini IDE driver. (for Windows XP and Windows 2000 operating system versions only.) SiS 740 Display Driver Click this item to load the installation wizard and install the SiS 740 display driver. SiS AGP Driver Click this item to load the installation wizard and install the SiS Accelerated Graphics Adapter (AGP) driver.
ASUS Update Installs utility to download and update motherboard BIOS & drivers. Microsoft DirectX 8.1 Driver This item installs the Microsoft V8.1 driver. PC-cillin 2002 This item installs the PC-cillin 2002 V9.02 anti-virus software. ADOBE Acrobat Reader V5.0 This installs software for viewing files in Portable Document Format (PDF). ASUS Screen Saver This item installs the ASUS screen saver. E-Color 3Deep This item installs application to optimize 3D graphics output. 3.2.
