ASUS XGDLS User Manual

®

XG-DLS

Dual Xeon® A TX 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 T O THE IMPLIED
W ARRANTIES OR CONDITIONS OF MERCHANTABILITY OR FITNESS FOR A P AR­TICULAR 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 DAT A, 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, LANDesk, and Pentium are registered trademarks of Intel Corporation.

• IBM and OS/2 are registered trademarks of International Business Machines.

• Symbios is a registered trademark of Symbios Logic Corporation.

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

• Sound Blaster, SB16, A WE32, A WE64D and SB-LINK are trademarks of Creative T echnology Ltd.

• Adobe and Acrobat are registered trademarks of Adobe Systems Incorporated.
The product name and revision number are both printed on the product itself. Manual revi-

sions 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.

Copyright © 1999 ASUSTeK COMPUTER INC. All Rights Reserved.

Product Name: ASUS XG-DLS
Manual Revision: 1.04 E396
Release Date: June 1999

ASUS XG-DLS User’s Manual2

ASUS CONTACT INFORMATION

ASUSTeK COMPUTER INC.

Marketing

Address: 150 Li-Te Road, Peitou, Taipei, Taiwan 112
Telephone: [phone]
Fax: [phone]
Email: [e-mail]

Technical Support

Fax: [phone]
Email: [e-mail]
Newsgroup: news2.asus.com.tw
WWW: www.asus.com.tw
FTP: ftp.asus.com.tw/pub/ASUS

ASUS COMPUTER INTERNATIONAL

Marketing

Address: 6737 Mowry Avenue, Mowry Business Center, Building 2

Newark, CA 94560, USA
Fax: [phone]
Email: [e-mail]

Technical Support

Fax: [phone]
BBS: [phone]
Email: [e-mail]
WWW: www.asus.com
FTP: ftp.asus.com.tw/pub/ASUS

ASUS COMPUTER GmbH

Marketing

Address: Harkort Str. 25, 40880 Ratingen, BRD, Germany
Telephone: [phone]
Fax: [phone]
Email: [e-mail]

Technical Support

Hotline: [phone]
BBS: 49-2102-448690
Email: [e-mail]
WWW: www.asuscom.de
FTP: ftp.asuscom.de/pub/ASUSCOM

ASUS XG-DLS User’s Manual 3

CONTENTS

I. INTRODUCTION 7

How this Manual is Organized ........................................................... 7

Item Checklist ..................................................................................... 7

II. FEATURES 8

Features ............................................................................................... 8

ASUS XG-DLS Motherboard........................................................... 11

III. INSTALLATION 12

ASUS XG-DLS Motherboard Layout .............................................. 12

Installation Steps............................................................................... 14

1. Jumpers ......................................................................................... 14

2. System Memory (DIMM) ............................................................. 16

DIMM Memory Installation Procedures ..................................... 17

3. Central Processing Unit (CPU).................................................... 18

Xeon Processor Installation .............................................................. 19

Step 1: Install the Baseboard....................................................... 19

Step 2: Install Retention Mechanisms......................................... 19

Step 3: Install the Retention Mechanism Brace Bars.................. 20

Step 4: Install Cartridge Lifters................................................... 20

Step 5: Install a 2nd Processor or Termination Module .............. 21

Step 6: Install Retention Mechanism Cap ................................... 21

Step 7: Install Retention Mechanism Frame ............................... 22

Removing the Xeon™ Processor ................................................ 22

External Thermal Sensor (optional) ............................................ 23

4. Expansion Cards .......................................................................... 24

Expansion Card Installation Procedure: ................................ 24

Assigning IRQs for Expansion Cards.................................... 24

Assigning DMA Channels for ISA Cards.............................. 25

ISA Cards and Hardware Monitor ......................................... 25

Accelerated Graphics Port ..................................................... 25

5. External Connectors..................................................................... 26

SCSI Connection and Termination Information.......................... 30

SCSI Connection Examples .................................................. 30

Power Connection Procedures .......................................................... 35

IV. BIOS SOFTWARE 36

Flash Memory Writer Utility ............................................................ 36

Main Menu .................................................................................. 36

Managing and Updating Your Motherboard’s BIOS................... 38

6. BIOS Setup .................................................................................. 39

Load Defaults ........................................................................ 40

ASUS XG-DLS User’s Manual4

CONTENTS

Standard CMOS Setup ................................................................ 40

Details of Standard CMOS Setup:......................................... 40

BIOS Features Setup ................................................................... 43

Details of BIOS Features Setup............................................. 43

Chipset Features Setup ................................................................ 46

Details of Chipset Features Setup.......................................... 46

Power Management Setup........................................................... 49

Details of Power Management Setup .................................... 49

PNP and PCI Setup ..................................................................... 52

Details of PNP and PCI Setup ............................................... 52

Load BIOS Defaults .................................................................... 54

Load Setup Defaults .................................................................... 54

Supervisor Password and User Password ................................... 55

IDE HDD Auto Detection ........................................................... 56

Save & Exit Setup ....................................................................... 57

Exit Without Saving .................................................................... 57

ASUS XG-DLS 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 inter ­ference 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 ap-

proved by the manufacturer could void any assurances of safety or performance
and could result in violation of Part 15 of the FCC Rules.

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 XG-DLS User’s Manual6

I. INTRODUCTION

How this Manual is Organized

This manual is divided into the following sections:

I. Introduction Manual information and checklist
II. Features Information and specifications
III. Installation Instructions on setting up the motherboard
IV. BIOS Software Instructions on setting up the BIOS software
V. Support Software Driver and utilities installation and usage

Item Checklist

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

(1) ASUS Motherboard
(1) Processor mounting set for two processors

Manual / Checklist

I. INTRODUCTION

(1) Front side bus termination module (for slot 2 connector)
(1) IDE ribbon cable for master and slave drives
(1) Floppy ribbon cable for (1) 5.25inch floppy and (2) 3.5inch floppies
(1) Bag of spare jumpers caps
(1) 68-pin Ultra2 cable with terminator (usable on all 68pin SCSI devices)
(1) 68-pin Ultra-Wide SCSI cable (not usable for Ultra2 devices)
(1) 50-pin Ultra-Fast SCSI cable
(1) Support CD with drivers and utilities
(1) This motherboard User’s Manual
(1) Adaptec 7800 Family Manager Set User’s Manual

ASUS PC100 DIMM memory module (optional)
ASUS PCI-L101 Wake-On-LAN 10/100 Fast Ethernet Card (optional)

IrDA-compliant infrared module (optional)
CPU thermal sensor cable (optional)

ASUS XG-DLS User’s Manual 7

II. FEATURES

Features

The ASUS XG-DLS motherboard is carefully designed for the demanding corpo­rate user who wants the highest performance motherboard money can buy.

• Multi-Speed: Supports dual Intel

II. FEATURES

Specifications

• Intel AGPset: Features Intel’s 440GX AGPset with I/O subsystems and front-

• PC100 Memory Support: Equipped with four DIMM sockets to support Intel

• Network Interface: Features the Intel 82558 Fast-Ethernet Controller (fully

• W ake-On-LAN Connector: Supports a secondary W ake-On–LAN activity with

• Adaptec SCSI Chipset: Features Adaptec AIC-7896 dual-channel Ultra2 SCSI

• AGP Slot: Supports Accelerated Graphics Port cards for high performance, com-

• PCI/ISA Expansion Slots: Provides five 32-bit PCI and one 16-bit ISA slots.

• Super Multi-I/O: Provides two high-speed UART compatible serial ports and

• Ultra DMA/33 Bus Master IDE/Floppy: Comes with an onboard PCI Bus

• SB-Link™: Features Creative’s SB-Link™, allowing SB16 compatibility, us-

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

• Chassis Intrusion: Onboard chassis intrusion header allows security switches

®

Pentium® III Xeon™ (500MHz and faster)
and Pentium® II Xeon™ (400MHz to 450MHz) processors. When using a dual
processor configuration, both processors must have the same speed. When us­ing a single processor configuration, the included front side bus termination
moudle must be used.

side bus (FSB) platform, which boosts the traditional 66-MHz internal bus speed
to 100MHz.

PC100-compliant SDRAMs (8, 16, 32, 64, 128, 256, or 512MB) up to 2048MB.

integrated 10BASE-T/100BASE-TX) which supports Wake-On-LAN.

an optional Wake-On-LAN Ethernet card on the expansion slot.

chipset that supports any combination of 50-pin narrow or 68-pin wide/ultra2
devices through the onboard 50-pin and 68-pin SCSI connectors.

ponent level interconnect targeted at 3D graphical display applications.

(PCI4 and PCI5 has shared interrupt)

one parallel port with EPP and ECP capabilities. UART2 can also be directed
from COM2 to the Infrared Module for wireless connections.

Master IDE controller with two connectors that supports four IDE devices in
two channels, supports UltraDMA/33, PIO Modes 3 and 4 and Bus Master IDE
DMA Mode 2, and supports Enhanced IDE devices. Two floppy drives of either

5.25inch or 3.5inch (1.44MB or 2.88MB) are also supported without an external
card. Supports Japanese standard “Floppy 3 mode” (3.5-inch disk drive: 1.2MB)
and LS-120 floppy disk drives (3.5-inch disk drive: 120 MB, 1.44MB, 720KB).
BIOS supports IDE CD-ROM or SCSI device boot-up.

ing Intel’s PC-PCI technology, to AWE64D or compatible PCI audio cards.

to be connected to the motherboard for chassis intrusion alarm and logging.

8 ASUS XG-DLS User’s Manual

II. FEATURES

Special Features:

• Enhanced ACPI: Features a programmable BIOS, offering enhanced ACPI for

Windows 98 compatibility, built-in firmware-based virus protection through
Trend ChipAway Virus codes, and autodetection of most devices for virtually
automatic setup.

• 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.)

• 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.

• PC’98 Compliant: Both the BIOS and hardware levels of ASUS smart series of

motherboards meet PC’98 compliancy. The new PC’98 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 Windows 95/98/NT.

• Anti-Boot Virus BIOS & PC-cillin Bundled: Double protection for your moth-

erboard against boot sector viruses through boot firmware (Anti-Boot V irus BIOS)
and file viruses through the bundled PC-cillin.

• Symbios SCSI BIOS: Supports optional ASUS Symbios SCSI controller cards

through onboard SYMBIOS firmware.

Performance Features:

• Concurrent PCI: Concurrent PCI allows multiple PCI transfers from PCI mas-

ter busses to the memory and to the processor.

• Double the IDE Transfer Speed: ASUS smart series motherboards with Intel

chipsets improves IDE transfer rate using Bus Master UltraDMA/33 IDE which
can handle data transfer up to 33MB/s. The best of all is that this new technol­ogy is compatible with existing ATA-2 IDE specs so there is no need to upgrade
current hard drives or cables.

Specifications

II. FEATURES

• SDRAM Optimized Performance: Supports the new generation memory - Syn-

chronous Dynamic Random Access Memory (SDRAM) which increases the data
transfer rate from 528MB/s max using EDO memory to 800MB/s max using
SDRAM.

ASUS XG-DLS User’s Manual 9

Intelligent Features:

• Auto Fan Off: The system fans will power off automatically even in sleep

• Dual Function Power Button: Pushing the power button for less than 4 sec-

II. FEATURES

Specifications

• Keyboard Power Up: Keyboard Power Up can be enabled or disabled to allow

• Message LED (requires ACPI OS support): Turbo LEDs now act as informa-

II. FEATURES

mode. This function reduces both energy consumption and system noise, and is
an important feature in implementing silent PC systems.

onds 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 setting (see “Power
Management Setup” under BIOS SOFTWARE). When the power button is
pressed for more than 4 seconds, the system enters the soft-off mode regardless
of the BIOS setting.

the computer to be powered on by pressing the space bar on the keyboard.

tion providers. Through the way a particular LED illuminates, the user can de­termine the stage the computer is in. A simple glimpse provides useful informa­tion to the user.

• Remote Ring On (requires external modem): This allows a computer to be

turned on remotely through an external modem. With this benefit on-hand, any
user can access vital information from their computer from anywhere in the world!

• System Resources Alert: Today’s operating systems such as Windows 95/98/

NT and OS/2, 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.

10 ASUS XG-DLS User’s Manual

II. FEATURES

ASUS XG-DLS Motherboard

Dual Slot 2 Connectors (for Xeon™ Processors)
T: PS/2 Mouse
B: PS/2 Keyboard

T: USB Port 1
B: USB Port 2

COM 1
(Bottom)

4 DIMM Sockets

ATX/AUX Power
Connectors

Parallel (Top)
Serial (Bottom)

COM 2
(Bottom)

Ethernet Port
(RJ45)

Intel 440GX AGPset
Intel Fast Ethernet
Floppy Connector

Accelerated
Graphics Port

5 PCI Slots
Multi-I/O

Hardware Monitor

Programmable
2Mbit Flash EEPROM

II. FEATURES

Motherboard Parts

1 ISA Slots

Intel PIIX4E PCIset

Adaptec AIC-7896
Dual Chan U2 SCSI

68pin Ultra2-SCSI Connector A
50pin Ultra-Fast-SCSI Connector
68pin Ultra2-SCSI Connector B

ASUS XG-DLS User’s Manual 11

ASUS XG-DLS Motherboard Layout

PS/2

TOP:

USB 1

USB

BOTTOM:

USB 2

COM1

Motherboard Layout

III. INST ALLATION

PARALLEL PORT

TOP:

Mouse

BOTTOM:

Keyboard

PWR_FAN

III. INSTALLATION

Slot 2 Connector (for Intel® Xeon™ Processor)

CPU1TEMP

Intel

440GX

AGPset

PWR3V

ATXPWR

®

COM2

RJ-45

Hardware

Monitor

Motherboard

Thermal Sensor

Intel® Fast-

Ethernet

Chipset

Multi-I/O,
Keyboard
Controller

SB-LINK

Flash EEPROM

CHA_FAN

Slot 2 Connector (for Intel® Xeon™ Processor)

CPU0TEMP

FLOPPY

PCI1 (PCI Slot 1)

WOL_CON

PCI2 (PCI Slot 2)

PCI3 (PCI Slot 3)

PCI4 (PCI Slot 4)

(Programable BIOS)

PCI5 (PCI Slot 5)

ISA Slot 1 (ISA1)

CPU_FAN

XG-DLS

AGP (Accelerated Graphics Port)

R

Adaptec

®

AIC-7896

Dual Chan.

Chipset

®

Intel
PIIX4E
PCIset

Ultra-Fast (50-Pin)
SCSI Connector
(Channel B)

CHASSIS
(Intrusion)

BUS FREQ

1

SECONDARY IDE

DIMM Socket 4 (64/72 bit, 168 pin module)

DIMM Socket 3 (64/72 bit, 168 pin module)

DIMM Socket 2 (64/72 bit, 168 pin module)

DIMM Socket 1 (64/72 bit, 168 pin module)

01 23 45

ROW

67

PRIMARY IDE

FS0
FS1
FS2

Ultra2 (68-Pin)SCSI
Connector (Channel A)

35

1

35

1

Ultra2 (68-Pin)SCSI
Connector (Channel B)

68
34

68
34

ASUS

ASIC

CLRTC

HDLED

Freq Mult

BF1

BF0

BF2

BF3

Buzzer

PANEL Connectors

CR2032 3V
Lithium Cell

(BIOSPower)

IR

12 ASUS XG-DLS User’s Manual

III. INSTALLATION

Jumpers

1) FS0, FS1, FS2 p. 15 CPU Bus Frequency

2) BF0, BF1, BF2, BF3 p. 15 CPU Core:Bus Frequency Multiple

Expansion Slots/Sockets

1) DIMM Sockets p. 17 DIMM Memory Support

2) Slot 2 p. 18 Intel Xeon™ Processor Support

3) SLOT1 p. 24 16-bit ISA Bus Expansion Slots

4) PCI1, 2, 3, 4, 5 p. 24 32-bit PCI Bus Expansion Slots

5) AGP p. 25 Accelerated Graphics Port

Hardware Monitor

1) CPU0TEMP p. 23 External Temperature Sensor Connector (Processor1)

2) CPU1TEMP p . 23 External T emperature Sensor Connector (Processor2)

Connectors

1) PS2KBMS p. 26 PS/2 Mouse Connector (6-pin female)

2) PS2KBMS p. 26 PS/2 Keyboard Connector (6-pin female)

3) PRINTER p. 27 Parallel (Printer) Port Connector (25-pin female)

4) COM1/COM2 p. 27 Serial Port COM1/COM2 (two 9-pin male)

5) RJ-45 p. 27 RJ-45 Connector (8-pin female)

6) USB p. 28 Universal Serial BUS Ports 1 & 2 (two 4 pin female)

7) FLOPPY p. 28 Floppy Drive Connector (34-1 pins)

8) HDLED p. 28 Activity LED Lead (2 pins)

9) Primary/SecondaryIDE p. 29 Primary/Secondary IDE Connector (40 pins)

10) SCSI-50/ULTRA2-68 p. 29 Ultra-Fast (50 pins)/Ultra2 (68 pins) SCSI Connectors

11) IR p. 31 Infrared Port Module Connector (5 pins)

12) SBLINK p. 31 SB-LINK™ Connector (6-1 pins)

13) MSG.LED (PANEL) p. 32 Message LED Lead (2 pins)

14) SMI (PANEL) p. 32 SMI Suspend Switch Lead (2 pins)

15) PWR (PANEL) p. 32 ATX Power Switch / Soft Power Switch (2 pins)

16) RESET (PANEL) p. 32 Reset Switch Lead (2 pins)

17)

KEYLOCK (

18)

KEYLOCK (

19) SPEAKER (PANEL) p. 32 Speaker Connector (4 pins)

20) CHASSIS p. 33 Chassis Open Alarm Lead (4-1 pins)

21) WOLCON p. 33 Wake-On-LAN Connector (3 pins)

22) PWR_/CHA_/CPU_FAN p. 34 Power Supply/Chassis/CPU Fan Connectors (3 pins)

23) ATXPWR/PWR3V p. 34 ATX Power/Auxilliary Connector (20 pins /6 pins)

PANEL
PANEL

)
)

p. 32 System Power LED (3 pins)
p. 32 Keyboard Lock Switch Lead (2 pins)

*

Layout Contents

III. INST ALLATION

*

The onboard hardware monitor uses the address 290H-297H so legacy ISA cards

must not use this address, otherwise conflicts will occur.

ASUS XG-DLS User’s Manual 13

III. INST ALLATION

Jumpers

III. INSTALLATION

Installation Steps

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

1. Set Jumpers on the Motherboard

2. Install System Memory Modules

3. Install the Central Processing Unit (CPU)

4. Install Expansion Cards

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

6. Setup the BIOS Software

W ARNING! Computer motherboards, baseboards and components, such as SCSI

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.

14 ASUS XG-DLS User’s Manual

III. INSTALLATION

1. Jumpers

1. CPU Bus Frequency (FS0, FS1, FS2)

This option tells the clock generator what frequency to send to the CPU, DRAM,
and chipset. This allows the selection of the CPU’ s External frequency (or BUS
Clock). The BUS Clock multiplied by the BUS Ratio equals the CPU’ s Internal
frequency (the advertised CPU speed).

2. CPU Core:BUS Frequency Multiple (BF0, BF1, BF2, BF3)

This option sets the frequency ratio between the Internal frequency of the CPU
and the CPU’s External frequency. These must be set in conjunction with the

CPU Bus Frequency.

BF2

BF2

112MHz

BF3

BF3

231

BF1

BF0

4.0x (4/1)

BF1

BF0

7.5x (15/2)

BF2

BF2

BF3

BF3

BF1

BF0

4.5x (9/2)

BF1

BF0

8.0x (8/1)

BF2

BF2

BF3

BF3

BF1

BF0

5.0x (5/1)

BF2

BF3

XG-DLS

R

XG-DLS CPU Settings

100MHz

BF1

BF0

3.0x (3/1)

BF1

BF0

6.5x (13/2)

BF2

BF2

231

BF3

BF3

BF1

BF1

83.3MHz

BF2

BF3

BF2

BF3

231

231

231

FS0
FS1
FS2

66.8MHz

CPU Bus Frequency

BF0

1
2
3

2.0x (2/1)

BF0

1
2
3

5.5x (11/2)

CPU Core:Bus Frequency Multiple

BF1

BF1

BF2

BF2

BF3

BF3

75MHz

BF0

2.5x (5/2)

BF0

6.0x (6/1)

103MHz

BF1

BF0

3.5x (7/2)

BF1

BF0

7.0x (7/1)

231

W ARNING! Frequencies above 100Mhz exceed the specifications for the on-

board Intel Chipset and are not guaranteed to be stable.

Jumpers

III. INST ALLATION

Set the jumpers by the Internal speed of your Intel Xeon processor as follows:

(BUS Frequency) (Freq. Multiple)

Frequency Ratio BUS FQ. FS0 FS1 FS2 BF0 BF1 BF2 BF3

550MHz 5.5x 100MHz [1-2] [1-2] [1-2] [2-3] [2-3] [2-3] [1-2]
500MHz 5.0x 100MHz [1-2] [1-2] [1-2] [1-2] [2-3] [2-3] [1-2]
450MHz 4.5x 100MHz [1-2] [1-2] [1-2] [2-3] [1-2] [2-3] [1-2]

ASUS XG-DLS User’s Manual 15

2. System Memory (DIMM)

This motherboard uses only Dual Inline Memory Modules (DIMMs). Sockets are
available for 3.3Volt (power level) unbuffered Synchronous Dynamic Random Ac-
cess Memory (SDRAM). One side (with memory chips) of the DIMM takes up one
row on the motherboard.

To utilize the chipset’s Error Checking and Correction (ECC) feature, you must use a
DIMM module with 9 chips per side (standard 8 chips/side + 1 ECC chip) and make
the proper settings through “Chipset Features Setup” in BIOS setup.

Memory speed setup is recommended through SDRAM Configuration under “Chipset
Features Setup” in BIOS setup.

Install memory in any combination as follows:

III. INST ALLATION

System Memory

DIMM Location 168-pin DIMM Total Memory

III. INSTALLATION

Socket 1 (Rows 0&1) SDRAM 8,16,32,64,128,256,512MB x1
Socket 2 (Rows 2&3) SDRAM 8,16,32,64,128,256,512MB x1
Socket 3 (Rows 4&5) SDRAM 8,16,32,64,128,256,512MB x1
Socket 4 (Rows 6&7) SDRAM 8,16,32,64,128,256,512MB x1

Total System Memory (Max 2048MB) =

General DIMM Notes

• For the system CPU bus to operate at 100MHz, use only PC100-compliant DIMMs

compatible with Intel’s PC100 SDRAM specifications. This motherboard operates at
100MHz, thus most systems will not even boot if non-compliant modules are used be­cause of the strict timing issues involved under this speed. If your DIMMs are not PC100­compliant, set the CPU bus frequency to 66MHz.

• Two possible memory chips are supported: SDRAM with and without ECC.

• SDRAM chips are generally thinner with higher pin density than EDO (Extended Data
Output) chips.

• BIOS shows SDRAM memory on bootup screen.

• 8 chips/side modules do not support ECC, only 9 chips/side modules support ECC.

• Single-sided DIMMs come in 16, 32, 64,128MB; double-sided come in 32, 64, 128, 256MB.

16 ASUS XG-DLS User’s Manual

III. INSTALLATION

Power Connection Procedures

1. After all connections are made, close the system case cover.

2. Be sure that all switches are off (in some systems, marked with

3. Connect the power supply cord into the power supply located on the back of
your system case according to your system user’s manual.

4. Connect the power cord into a power outlet that is equipped with a surge protector .

5. You may then turn on your devices in the following order:
a. Your monitor
b. External SCSI devices (starting with the last device on the chain)
c. Your system power. For ATX power supplies, you need to switch

on the power supply as well as press the ATX power switch on the
front of the case.

6. The power LED on the front panel of the system case will light. For ATX power
supplies, the system LED will light when the ATX power switch is pressed. The
monitor LED may light up after the system’s if it complies with “green” stan­dards or if it has a power standby feature. The system will then run power-on
tests. While the tests are running, additional messages will appear on the screen.
If you do not see anything within 30 seconds from the time you turn on the
power, the system may have failed a power-on test. Recheck your jumper set­tings and connections or call your retailer for assistance.

).

Power Connections

III. INST ALLATION

7. During power-on, hold down <Delete> to enter BIOS setup. Follow the instruc­tions in the next section, BIOS SOFTWARE.

* Powering Off your computer: You must first exit or shut down your operating

system before switching off the power switch. For ATX power supplies, you
can press the ATX power switch after exiting or shutting down your operating
system. If you use Windows 95, click the Start button, click Shut Down, and
then click Shut down the computer?.

NOTE: The message “You can now safely turn off your computer” will not
appear when shutting down with ATX power supplies.

ASUS XG-DLS User’s Manual 35

IV. BIOS SOFTWARE

Flash Memory Writer Utility

AFLASH.EXE: This is the Flash Memory W riter utility that updates the BIOS by uploading
a new BIOS file to the programmable flash ROM chip on the motherboard. To determine the
BIOS version of your motherboard, check the last four numbers of the code displayed on the
upper left-hand corner of your screen during bootup. Larger numbers represent a newer BIOS
file. This file works only in DOS mode.

NOTE: The following screen displays are provided as examples only and may not reflect the

screen contents displayed on your system.

Flash Memory Writer

IV. BIOS

IMPORTANT! If “unknown” is displayed after Flash Memory:, the memory chip is

either not programmable or is not supported by the ACPI BIOS and therefore, cannot be
programmed by the Flash Memory Writer utility.

Main Menu

1. Save Current BIOS To File

This option allows you to save a
copy of the original motherboard
BIOS in case you need to reinstall
it. It is recommended that you save
AFLASH.EXE and the BIOS file
to a bootable floppy disk.

To save your current BIOS, type
[1] at the Main Menu and then
press <Enter>. The Save Current
BIOS To File screen appears.
Type a filename and the path, for example, A:\XXX-X and then press <Enter>.

ASUS XG-DLS User’s Manual36

IV. BIOS SOFTWARE

2. Update BIOS Including Boot Block and ESCD

This option updates the boot block, the baseboard BIOS, and the ACPI extended system con­figuration data (ESCD) parameter block from a new BIOS file. See the next page for proce­dures on downloading an updated BIOS file.

To update your current BIOS,
type [2] at the Main Menu and
then press <Enter>. The Update

BIOS Including Boot Block
and ESCD screen appears. T ype

the filename of your new BIOS
and the path, for example,
A:\XXXXXXX.AWD, and then
press <Enter>.

When prompted to confirm the
BIOS update, press Y to start the

update.

The utility starts to program the
new BIOS information into the
flash ROM. When the pro­gramming is finished, Flashed
Successfully will be displayed.

Follow the onscreen instruc­tions to continue.

IV. BIOS

Flash Memory Writer

ASUS XG-DLS User’s Manual 37

IV. BIOS SOFTWARE

Managing and Updating Your Motherboard’s BIOS

Upon First Use of the Computer System

1. Create a bootable system floppy disk by typing [FORMAT A:/S] from the DOS
prompt without creating “AUTOEXEC.BAT” and “CONFIG.SYS” files.

2. Copy AFLASH.EXE to the just created boot disk.

3. Run AFLASH.EXE from this new disk and select option 1. Save Current BIOS
to File. See 1. Save Current BIOS To File on the previous page for more de­tails and the rest of the steps.

Updating BIOS Procedures (only when necessary)

1. Download an updated ASUS BIOS file from the Internet (WWW or FTP) or a
BBS (Bulletin Board Service) (see ASUS CONT ACT INFORMATION on page
3 for details) and save to the disk you created earlier.

2. Boot from the disk you created earlier.

3. At the “A:\” prompt, type AFLASH and then press <Enter>.

4. At the Main Menu, type 2 and then press <Enter>. See 2. Update BIOS In-
cluding Boot Block and ESCD on the previous page for more details and the
rest of the steps.

WARNING! If you encounter problems while updating the new BIOS, DO NOT

turn off your system since this might prevent your system from booting up. Just

Updating BIOS

IV. BIOS

repeat the process, and if the problem still persists, update the original BIOS file
you saved to disk above. If the Flash Memory Writer utility was not able to
successfully update a complete BIOS file, your system may not be able to boot
up. If this happens, your system will need service.

ASUS XG-DLS User’s Manual38

IV. BIOS SOFTWARE

6. BIOS Setup

The motherboard supports two programmable Flash ROM chips: 5-Volt and 12­Volt. Either of these memory chips can be updated when BIOS upgrades are re­leased. Use the Flash Memory W riter utility to download the new BIOS file into the
ROM chip as described in detail in this section.

All computer motherboards provide a Setup utility program for specifying the sys­tem configuration and settings. If your motherboard came in a computer system, the
proper configuration entries may have already been made. If so, invoke the Setup
utility , as described later , and take note of the configuration settings for future refer ­ence; in particular, the hard disk specifications.

If you are installing the motherboard, reconfiguring your system or you receive a
Run Setup message, you will need to enter new setup information. This section
describes how to configure your system using this utility.

The BIOS ROM of the system stores the Setup utility. When you turn on the com­puter, the system provides you with the opportunity to run this program. This ap­pears during the Power-On Self Test (POST). Press <Delete> to call up the Setup
utility . If you are a little bit late pressing the mentioned key(s), POST will continue
with its test routines, thus preventing you from calling up Setup. If you still need to
call Setup, reset the system by pressing <Ctrl> + <Alt> + <Delete>, or by pressing
the Reset button on the system case. You can also restart by turning the system off
and then back on again. But do so only if the first two methods fail.

When you invoke Setup, the CMOS SETUP UTILITY main program screen will
appear with the following options:

IV. BIOS

BIOS Setup

ASUS XG-DLS User’s Manual 39

IV. BIOS SOFTWARE

Load Defaults

The “Load BIOS Defaults” option loads the minimum settings for troubleshooting.
“Load Setup Defaults”, on the other hand, is for loading optimized defaults for
regular use. Choosing defaults at this level, will modify all applicable settings.

A section at the bottom of the above screen displays the control keys for this screen.
Take note of these keys and their respective uses. Another section just below the
control keys section displays information on the currently highlighted item in the list.

Standard CMOS Setup

The “Standard CMOS Setup” option allows you to record some basic system hard­ware configuration and set the system clock and error handling. If the motherboard
is already installed in a working system, you will not need to select this option
anymore. However, if the configuration stored in the CMOS memory on the board
gets lost or damaged, or if you change your system hardware configuration, you will
need to respecify the configuration values. The configuration values usually get lost
or corrupted when the power of the onboard CMOS battery weakens.

Standard CMOS

IV. BIOS

The preceding screen provides you with a list of options. At the bottom of this screen
are the control keys for this screen. Take note of these keys and their respective uses.

User-configurable fields appear in a different color. If you need information on the
selected field, press <F1>. The help menu will then appear to provide you with the
information you need. The memory display at the lower right-hand side of the screen
is read-only and automatically adjusts accordingly.

Details of Standard CMOS Setup:

Date

T o set the date, highlight the “Date” field and then press either <Page Up>/<Page Down>
or <+>/<–> to set the current date. Follow the month, day and year format. Valid values
for month, day and year are: Month: (1 to 12), Day: (1 to 31), Year: (up to 2079)

ASUS XG-DLS User’s Manual40

IV. BIOS SOFTWARE

Time

T o set the time, highlight the “Time” field and then press either <Page Up>/<Page Down>
or <+>/<–> to set the current time. Follow the hour, minute and second format. Valid
values for hour, minute and second are: (Hour: (00 to 23), Minute: (00 to 59), Second:

(00 to 59).
NOTE: You can bypass the date and time prompts by creating an AUTOEXEC.BAT

file. For information on how to create this file, please refer to the MS-DOS manual.

Hard Disks

This field records the specifications for all non-SCSI hard disk drives installed in
your system. The onboard PCI IDE connectors provide Primary and Secondary
channels for connecting up to four IDE hard disks or other IDE devices. Each chan­nel can support up to two hard disks; the first of which is the “master” and the
second is the “slave”.

Specifications for SCSI hard disks need not to be entered here since they operate
using device drivers and are not supported bythe BIOS. If you install other SCSI
controller cards, refer to their respective documentations on how to install the re­quired SCSI drivers.

For IDE hard disk drive setup, you can:

• Use the Auto setting for detection during bootup.

• Use the IDE HDD AUTO DETECTION in the main menu to automatically
enter the drive specifications.

• Enter the specifications yourself manually by using the “User” option.

The entries for specifying the hard disk type include CYLS (number of cylinders),
HEAD (number of read/write heads), PRECOMP (write precompensation), LANDZ
(landing zone), SECTOR (number of sectors) and MODE. The SIZE field auto­matically adjusts according to the configuration you specify. The documentation
that comes with your hard disk should provide you with the information regarding
the drive specifications.

The MODE entry is for IDE hard disks only , and can be ignored for MFM and ESDI
drives. This entry provides three options: Normal, Lar ge, LBA, or Auto (see below).
Set MODE to the Normal for IDE hard disk drives smaller than 528MB; set it to
LBA for drives over 528MB that support Logical Block Addressing (LBA) to allow
larger IDE hard disks; set it to Large for drives over 528MB that do not support
LBA. Large type of drive can only be used with MS-DOS and is very uncommon.
Most IDE drives over 528MB support the LBA mode.

IV. BIOS

Standard CMOS

ASUS XG-DLS User’s Manual 41

IV. BIOS SOFTWARE

Auto detection of hard disks on bootup

For each field: Primary Master, Primary Slave, Secondary Master, and Secondary
Slave, you can select Auto under the TYPE and MODE fields. This will enable auto
detection of your IDE hard disk during bootup. This will allow you to change your
hard disks (with the power off) and then power on without having to reconfigure
your hard disk type. If you use older hard disks that do not support this feature, then
you must configure the hard disk in the standard method as described earlier by the
“User” option.

NOTE: After the IDE hard disk drive information has been entered into BIOS, new
IDE hard disk drives must be partitioned (such as with FDISK) and then formatted
before data can be read from and write on. Primary IDE hard disk drives must have
its partition set to active (also possible with FDISK).

NOTE: SETUP Defaults are noted in parenthesis next to each function heading.

Drive A / Drive B (None)

These fields record the types of floppy disk drives installed in your system. The
available options for drives A and B are: 360K, 5.25 in.; 1.2M, 5.25 in.; 720K, 3.5

in.; 1.44M, 3.5 in.; 2.88M, 3.5 in.; None

Standard CMOS

IV. BIOS

To enter the configuration value for a particular drive, highlight its corresponding
field and then select the drive type using the <page up>/<page down> or <+>/<->
keys.

Floppy 3 Mode Support (Disabled)

This is the Japanese standard floppy drive. The standard stores 1.2MB in a 3.5inch
diskette. This is normally disabled but you may choose from either: Drive A, Drive

B, Both, and Disabled

Video (EGA/VGA)

Set this field to the type of video display card installed in your system. The options
are EGA/VGA, CGA 40, CGA 80, and MONO (for Hercules or MDA).

If you are using a VGA or any higher resolution card, choose EGA/VGA.

Halt On (All Errors)

This field determines which types of errors will cause the system to halt. Choose from
All Errors; No Errors; All,But Keyboard, All,But Diskette; and All,But Disk/Key.

ASUS XG-DLS User’s Manual42

IV. BIOS SOFTWARE

BIOS Features Setup

The “BIOS Features Setup” option consists of configuration entries that allow you
to improve your system performance, or let you set up some system features accord­ing to your preference. Some entries are required by the motherboard’s design to
remain in their default settings.

A section at the lower right of the screen displays the control keys you can use. T ake
note of these keys and their respective uses. If you need information on a particular
entry, highlight it and then press <F1>. A pop-up help menu will appear to provide
you with the information you need. <F5> loads the last set values, <F6> and <F7>
loads the BIOS default values and Setup default values, respectively.

NOTE: SETUP Defaults are noted in parenthesis next to each function heading.

Details of BIOS Features Setup

CPU Internal Core Speed

This function is reserved for future use and is currently disabled.

Boot Virus Detection (Enabled)

This field allows you to set boot virus detection, ensuring a virus-free boot sector.
This new antivirus solution is unlike native BIOS tools, which offer limited virus
protection typically by write-protecting the partition table. With this new solution,
your computer is protected against boot virus threats earlier in the boot cycle, that is,
before they have a chance to load into your system. This ensures your computer
boots to a clean operating system. The system halts and displays a warning message
when it detects a virus. If this occurs, you can either allow the operation to continue
or use a virus-free bootable floppy disk to restart and investigate your system. Be­cause of conflicts with new operating systems, for example, during installation of
new software, you may have to set this to Disabled to prevent write errors.

IV. BIOS

BIOS Features

ASUS XG-DLS User’s Manual 43

IV. BIOS SOFTWARE

Processor Serial Number (Disabled)

The Processor Serial Number is a unique electronic number that is added to every
Pentium III processor to help verify the identity of the user across the Internet. Set
this field to Enabled when you need increased security for doing business online or
e-commerce. Otherwise, set it to Disabled for greater anonymity when surfing the
Internet. If you are not using a Pentium III processor on the motherboard, you may
not make changes to this field.

CPU Level 1 Cache / CPU Level 2 Cache (Enabled)
These fields allow you to choose from the default of Enabled or choose Disabled to
turn on or off the CPU’s Level 1 and Level 2 built-in cache.

CPU Level 2 Cache ECC Check (Disabled)

This function controls the ECC check capability in the CPU level 2 cache.

BIOS Update (Enabled)

This functions as an update loader integrated into the BIOS to supply the processor
with the required data. The BIOS will load the update on all processors during
system bootup in the default position of Enabled.

Quick Power On Self Test (Enabled)

This field speeds up the Power-On Self Test (POST) routine by skipping retesting a
second, third, and forth time. Setup default setting for this field is Enabled. A
complete test of the system is done on each test.

HDD Sequence SCSI/IDE First (IDE)

When using both SCSI and IDE hard disk drives, IDE is always the boot disk using
drive letter C (default setting of IDE). This new feature allows a SCSI hard disk
drive to be the boot disk when set to SCSI. This allows multiple operating systems
to be used on both IDE and SCSI drives or the primary operating system to boot

BIOS Features

IV. BIOS

using a SCSI hard disk drive.

Boot Sequence (A,C)

This field determines where the system looks first for an operating system. Options
are A,C; C,A; A,CDROM,C; CDROM,C,A; CDROM,A,C; D,A; E,A; F,A; C only; LS/
ZIP, C; LAN,A,C; and LAN,C,A. The setup default setting, A, C, is to check first the
floppy disk and then the hard disk drive.

Boot Up Floppy Seek (Disabled)

When enabled, the BIOS will seek drive A once.

Floppy Disk Access Control (R/W)

This allows protection of files from the computer system to be copied to floppy
disks by allowing the setting of Read Only to only allow reads from the floppy disk
drive but not writes. The setup default R/W allows both reads and writes.

IDE HDD Block Mode Sectors (HDD MAX)

This field enhances hard disk performance by making multi-sector transfers instead
of one sector per transfer. Most IDE drives, except older versions, can utilize this
feature. Selections are HDD MAX, Disabled, 2, 4, 8, 16, and 32.

HDD S.M.A.R.T. capability (Disabled)

This allows the enabling or disabling of the S.M.A.R.T. (Self-Monitoring, Analysis
and Reporting Technology) system which utilizes internal hard disk drive monitor­ing technology. This feature is normally disabled because system resources used in
this feature may decrease system performance.

ASUS XG-DLS User’s Manual44

IV. BIOS SOFTWARE

PS/2 Mouse Function Control (Auto)

The default of Auto allows the system to detect a PS/2 mouse on bootup. If detected,
IRQ12 will be used for the PS/2 mouse. IRQ12 will be reserved for expansion cards
if a PS/2 mouse is not detected. Enabled will always reserve IRQ12, whether on
bootup a PS/2 mouse is detected or not.

OS/2 Onboard Memory > 64M (Disabled)

When using OS/2 operating systems with installed DRAM of greater than 64MB,
you need to set this option to Enabled otherwise leave this on Disabled.

MPS 1.4 Support (Disabled)

Leave on default setting for best performance.

......................................................................................................................................

PCI/VGA Palette Snoop (Disabled)

Some display cards that are nonstandard VGA such as graphics accelerators or MPEG
V ideo Cards may not show colors properly . The setting Enabled should correct this
problem. Otherwise leave this on the setup default setting of Disabled.

Video ROM BIOS Shadow (Enabled)

This field allows you to change the video BIOS location from ROM to RAM. Relo­cating to RAM enhances system performance, as information access is faster than
the ROM.

C8000-CBFFF to DC000-DFFFF (Disabled)

These fields are used for shadowing other expansion card ROMs. If you install
other expansion cards with ROMs on them, you will need to know which addresses
the ROMs use to shadow them specifically . Shadowing a ROM reduces the memory
available between 640K and 1024K by the amount used for this purpose.

Boot Up NumLock Status (On)

This field enables users to activate the Number Lock function upon system boot.

Typematic Rate Setting (Disabled)

When enabled, you can set the two typematic controls listed next. Setup default
setting is Disabled.

Typematic Rate (Chars/Sec) (6)

This field controls the speed at which the system registers repeated keystrokes.
Options range from 6 to 30 characters per second. Setup default setting is 6; other
settings are 8, 10, 12, 15, 20, 24, and 30.

Typematic Delay (Msec) (250)

This field sets the time interval for displaying the first and second characters. Four
delay rate options are available: 250, 500, 750, and 1000.

Security Option (System)

When you specify a Supervisor Password and/or User Passwor d (explained later in
this section), the Security Option field determines when the system prompts for the
password. The default setting is System, where the system prompts for the User
Password every time you start your system. The other option is Setup, where the
system goes through its startup routine unless the Setup utility is called, when the
system prompts for the Supervisor Password.

IV. BIOS

BIOS Features

ASUS XG-DLS User’s Manual 45

IV. BIOS SOFTWARE

Chipset Features Setup

The “Chipset Features Setup” option controls the configuration of the board’ s chipset.

NOTE: SETUP Defaults are noted in parenthesis next to each function heading.

Details of Chipset Features Setup

SDRAM Configuration (By SPD)

This sets the optimal timings of settings for items 2–5, depending on the memory
modules that you are using. Default setting is By SPD, which configures items 2–5
by reading the contents in the SPD (Serial Presence Detect) device. This 8-pin serial
EEPROM device stores critical parameter information about the module, such as
memory type, size, speed, voltage interface, and module banks.

Chipset Features

IV. BIOS

SDRAM CAS Latency

This controls the latency between SDRAM read command and the time that the data
actually becomes available. Leave on default setting.

SDRAM RAS to CAS Delay

This controls the latency between SDRAM active command and the read/write com­mand. Leave on default setting.

SDRAM RAS Precharge Time

This controls the idle clocks after issuing a precharge command to SDRAM. Leave
on default setting.

DRAM Idle Timer

This controls the idle clocks before closing an opened SDRAM page. Leave on
default setting.

SDRAM MA Wait State (Normal)

This controls the leadoff clocks for CPU read cycles. Leave on default setting.

Snoop Ahead (Enabled)

Enabled will allow PCI streaming. Leave on default setting.

Host Bus Fast Data Ready (Disabled)

Leave on default setting.

ASUS XG-DLS User’s Manual46

IV. BIOS SOFTWARE

16-bit I/O Recovery Time (1 BUSCLK) / 8-bit I/O Recovery Time (1 BUSCLK)

Timing for 16-bit and 8-bit ISA cards, respectively. Leave on default setting.

Graphics Aperture Size (64MB)

Memory-mapped, graphics data structures can reside in a Graphics Aperture. Leave
on default setting.

Video Memory Cache Mode (UC)

USWC (uncacheable, speculative write combining) is a new cache technology for
the video memory of the processor. It can greatly improve the display speed by
caching the display data. You must leave this on the default setting of UC
(uncacheable) if your display card cannot support this feature, otherwise your sys­tem may not boot.

PCI 2.1 Support (Enabled)

This function allows you to enable or disable PCI 2.1 features including passive release
and delayed transaction. Leave Enabled (default setting) for PCI 2.1 compliancy.

Memory Hole At 15M–16M (Disabled)

Enabling this feature reserves 15MB to 16MB memory address space to ISA expan­sion cards that specifically require this setting. This makes the memory from 15MB
and up unavailable to the system. Expansion cards can only access memory up to
16MB. The default is Disabled.

DRAM are xx bits wide

If all your DIMMs have ECC (e.g., 8 chips + 1 ECC chip), they are considered
72bits and the following will be displayed:

If your DIMMs do not have ECC (e.g., 8 chips), they are considered 64 bits and the
following will be displayed instead:

Data Integrity Mode (Non-ECC)

Non-ECC has byte-wise write capability but no provision for protecting data integrity
in the memory module array. EC-Only data errors are detected but not corrected.
ECC with hardware scrubbing allows a detection of single-bit and multiple-bit errors
and recovery of single-bit errors. (See 2. System Memory, section III for more infor­mation on memory modules.)

....................................................................................................................................

Onboard FDC Controller (Enabled)

When Enabled , this field allows you to connect your floppy disk drives to the onboard
floppy disk drive connector instead of a separate controller card. If you want to use a
different controller card to connect the floppy disk drives, set this field to Disabled.

IV. BIOS

Chipset Features

ASUS XG-DLS User’s Manual 47

IV. BIOS SOFTWARE

Onboard FDC Swap A & B (No Swap)

This field allows you to reverse the hardware drive letter assignments of your floppy
disk drives. Two options are available: No Swap and Swap AB. If you want to switch
drive letter assignments through the onboard chipset, set this field to Swap AB.

Onboard Serial Port 1 (3F8H/IRQ4)

Settings are 3F8H/IRQ4, 2F8H/IRQ3, 3E8H/IRQ4, 2E8H/IRQ10, and Disabled for
the onboard serial connector.

Onboard Serial Port 2 (2F8H/IRQ3)

Settings are 3F8H/IRQ4, 2F8H/IRQ3, 3E8H/IRQ4, 2E8H/IRQ10, and Disabled for
the onboard serial connector.

Onboard Parallel Port (378H/IRQ7)

This field sets the address of the onboard parallel port connector. You can select
either: 3BCH / IRQ 7, 378H / IRQ 7, 278H / IRQ 5, Disabled. If you install an I/O card
with a parallel port, ensure that there is no conflict in the address assignments. The PC
can support up to three parallel ports as long as there are no conflicts for each port.

Parallel Port Mode (ECP+EPP)

This field allows you to set the operation mode of the parallel port. The setting
Normal, allows normal-speed operation but in one direction only; EPP allows bidi-
rectional parallel port operation at maximum speed; ECP allows the parallel port to
operate in bidirectional mode and at a speed faster than the maximum unidirectional
data transfer rate; ECP+EPP allows normal speed operation in a two-way mode.

ECP DMA Select (3)

Chipset Features

IV. BIOS

This selection is available only if you select ECP or ECP+EPP in the Parallel Port
Mode. Select either DMA Channel 1, 3, or Disable.

UART2 Use Infrared (Disabled)

When enabled, this field activates the onboard infrared feature and sets the second
serial UART to support the infrared module connector on the motherboard. If your
system already has a second serial port connected to the onboard COM2 connector, it
will no longer work if you enable the infrared feature. By default, this field is set to
Disabled, which leaves the second serial port UAR T to support the COM2 serial port
connector . See IrDA-compliant infrar ed module connector under section III.

Onboard PCI IDE Enable (Both)

You can select to enable the primary IDE channel, secondary IDE channel, both, or
disable both channels (for systems with only SCSI drives).

IDE Ultra DMA Mode (Auto)

This field autodetects Ultra DMA capability (for improved transfer speeds and data in­tegrity) for compatible IDE devices. Set to Disable to suppress Ultra DMA capability.

IDE 0 Master/Slave PIO/DMA Mode, IDE 1 Master/Slave PIO/DMA Mode (Auto)

Each channel (0 and 1) has both a master and a slave making four IDE devices
possible. Because each IDE device may have a different Mode timing (0, 1, 2, 3, 4),
it is necessary for these to be independent. The default setting of Auto will allow
autodetection to ensure optimal performance

ASUS XG-DLS User’s Manual48

IV. BIOS SOFTWARE

Power Management Setup

The “Power Management Setup” option allows you to reduce power consumption.
This feature turns off the video display and shuts down the hard disk after a period
of inactivity.

NOTE: SETUP Defaults are noted in parenthesis next to each function heading.

Details of Power Management Setup

Power Management (User Define)

This field acts as the master control for the power management modes. Max Saving
puts the system into power saving mode after a brief period of system inactivity;
Min Saving is almost the same as Max Saving except that this time the system inac­tivity period is longer; Disable disables the power saving features; User Define al­lows you to set power saving options according to your preference.

IMPORTANT: Advanced Power Management (APM) should be installed to keep
the system time updated when the computer enters suspend mode activated by the
BIOS Power Management. For DOS environments, you need to add the statement,
DEVICE=C:\DOS\POWER.EXE, in you CONFIG.SYS. For W indows 3.x and Win­dows 95, you need to install Windows with the APM feature. A battery and power
cord icon labeled “Power” will appear in the “Control Panel.” Choose “Advanced”
in the Power Management Field.

Video Off Option (Suspend -> Off )

This field determines when to activate the video off feature for monitor power
management. The settings are Always On and Suspend -> Off.

IV. BIOS

Power Management

ASUS XG-DLS User’s Manual 49

IV. BIOS SOFTWARE

Video Off Method (DPMS OFF)

This field defines the video off features. The following options are available: DPMS
OFF, DPMS Reduce ON, Blank Screen, V/H SYNC+Blank, DPMS Standby, and
DPMS Suspend. The DPMS (Display Power Management System) features allow
the BIOS to control the video display card if it supports the DPMS feature. Blank
Screen only blanks the screen (use this for monitors without power management or

“green” features. If set up in your system, your screen saver will not display with
Blank Screen selected). V/H SYNC+Blank blanks the screen and turns off vertical
and horizontal scanning.

.......................................................................................................................................

PM Timers

This section controls the time-out settings for the Power Management scheme. The
fields included in this section are “HDD Power Down”, which places the hard disk
into its lowest power consumption mode, and the “Suspend Mode” which suspends
the CPU.

The system automatically “wakes up” from any power saving mode when there is
system activity such as when a key is pressed from the keyboard, or when there is
activity detected from the enabled IRQ channels.

HDD Power Down (Disable)

Shuts down any IDE hard disk drives in the system after a period of inactivity . This

Power Management

IV. BIOS

time period is user-configurable to 1–15 Min or Disable. This feature does not
affect SCSI hard drives.

Suspend Mode (Disable)

Sets the period of time after which each of these modes activate: 30 sec, 1 Min, 2
Min, 4 Min, 8 Min, 20 Min, 30 Min, 40 Min, 1 Hour, and Disable.

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Power Up Control

This section determines the ways the system can be controlled when it is started or
restarted, when modem activity is detected, or when power to the computer is inter­rupted and reapplied. The Soft-Off mode refers to powering of f the system through
a momentary button switch (ATX switch) or through the software as opposed to
disconnecting the AC power by way of a rocker switch or other means.

PWR Button < 4 Secs (Soft Off)

When set to Soft Off, the ATX switch can be used as a normal system power-off
button when pressed for less than 4 seconds. Suspend allows the button to have a
dual function where pressing less than 4 seconds will place the system in sleep
mode. Regardless of the setting, holding the ATX switch for more than 4 seconds
will power off the system.

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IV. BIOS SOFTWARE

PWR Up On Modem Act (Enabled)

This allows either settings of Enabled or Disabled for powering up the computer (turns the
ATX power supply on) when the modem receives a call while the computer is Soft-off.
NOTE: The computer cannot receive or transmit data until the computer and appli­cations are fully running, thus connection cannot be made on the first try. Turning
an external modem off and then back on while the computer is off causes an initializa­tion string that will also cause the system to power on.

AC PWR Loss Restart (Disabled)

This allows you to set whether you want your system to boot up after the power has
been interrupted. Disabled leaves your system off after reapplying power and En-
abled boots up your system after reapplying power.

Power Up By Keyboard (Disabled)

This allows the computer to be powered on by pressing the spacebar on the key­board. This feature requires an ATX power supply that can supply at least 300mA on
the +5VSB lead. The default is set to Disabled because not all computers have the
appropriate ATX power supply . Your computer will not power ON if you set this to
Enabled but do not have the appropriate ATX power supply.

Wake On LAN (Enabled)

This allows you to remotely power up your system through your network by send­ing a wake-up frame or signal. W ith this feature, you can remotely upload/download
data to/from systems during off-peak hours. Enabled sets this feature.

IMPORTANT: This feature requires the optional network interface (see VII. Net-
work Interface) and an ATX power supply with at least 720mA +5V standby power.

Automatic Power Up (Disabled)

This allows you to have an unattended or automatic power up of your system. You may
configure your system to power up at a certain time of the day by selecting Everyday,
which will allow you to set the time or at a certain time and day by selecting By Date.

.....................................................................................................................................

Fan Monitor (xxxxRPM)

The onboard hardware monitor is able to detect the Chassis Fan Speed, CPU Fan
Speed, and the Power Supply Fan Speed in Rotations Per Minute (RPM). Set to
Ignore if one of these are not used so that error messages will not be given.

.....................................................................................................................................

Thermal Monitor (xxxC/xxxF)

The onboard hardware monitor is able to detect the CPU and MB (motherboard) tem­peratures. Set to Ignore only if necessary.

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IV. BIOS

Power Management

Voltage Monitor (xx.xV)

The onboard hardware monitor is able to detect the voltages put out by the voltage
regulators. Set to Ignore only if necessary.

NOTE: If any of the monitored items are out of range, an error message will appear:
“Hardware Monitor found an error, enter POWER MANAGEMENT SETUP for
details”. You will then be prompted to “Press F1 to continue, DEL to enter SETUP”.

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IV. BIOS SOFTWARE

PNP and PCI Setup

The “PNP and PCI Setup” option configures the PCI bus slots. All PCI bus slots on
the system use INTA#, thus all installed PCI cards must be set to this value.

NOTE: SETUP Defaults are noted in parenthesis next to each function heading.

Details of PNP and PCI Setup

PNP OS Installed (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. Thus interrupts may be reassigned by
the OS when Yes is selected. When a non-PnP OS is installed or to prevent reassign-

Plug & Play / PCI

IV. BIOS

ing of interrupt settings, select the default setting of No.
Slot 1 IRQ / Slot 2 IRQ (Auto)

These fields set how IRQ use is determined for each PCI slot. The default setting for
each field is Auto, which uses auto-routing to determine IRQ use. The other options are
manual settings of NA, 3, 4, 5, 7, 9, 10, 11, 12, 14 or 15 for each slot.

PCI Latency Timer (32 PCI Clock)

The default setting of 32 PCI Clock enables maximum PCI performance for this
motherboard.

IRQ xx Used By ISA (No/ICU)

These fields indicate whether or not the displayed IRQ for each field is being used
by a legacy (non-PnP) ISA card. Two options are available: No/ICU and Yes. The
first option, the default value, indicates either that the displayed IRQ is not used or
an ISA Configuration Utility (ICU) is being used to determine if an ISA card is
using that IRQ. If you install a legacy ISA card that requires a unique IRQ, and you
are not using an ICU, you must set the field for that IRQ to Yes. For example: If you
install a legacy ISA card that requires IRQ 10, then set IRQ10 Used By ISA to Yes.

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IV. BIOS SOFTWARE

DMA x Used By ISA (No/ICU)

These fields indicate whether or not the displayed DMA channel for each field is
being used by a legacy (non-PnP) ISA card. A vailable options include: No/ICU and
Yes. The first option, the default setting, indicates either that the displayed DMA
channel is not used or an ICU is being used to determine if an ISA card is using that
channel. If you install a legacy ISA card that requires a unique DMA channel, and
you are not using an ICU, you must set the field for that channel to Yes.

ISA MEM Block BASE (No/ICU)

This field allows you to set the base address and block size of a legacy ISA card that
uses any memory segment within the C800H and DFFFH address range. If you
have such a card, and you are not using an ICU to specify its address range, select a
base address from the six available options; the ISA MEM Block SIZE field will
then appear for selecting the block size. If you have more than one legacy ISA card
in your system that requires to use this address range, you can increase the block
size to either 8K, 16K, 36K, or 64K. If you are using an ICU to accomplish this task,
leave ISA MEM Block BASE to its default setting of No/ICU.

Onboard AHA BIOS (Auto)

The default uses Auto settings for the onboard Adaptec 7896 SCSI BIOS. If you do
not want to use the onboard Adaptec 7896 SCSI BIOS, choose Disabled.

ONB AHA BIOS First (No)

This field allows you to give priority to the onboard SCSI BIOS for SCSI functions
over other add-on SCSI controllers. The default is No.

SCSI Channel B/A Term (Enabled)

The onboard SCSI chipset supports dual channels. There are three SCSI connectors
on the motherboard. The ULTRA2SCSIA (68-pin) connector uses channel A and the
FASTSCSI (50-pin) and ULTRA2SCSIB (68-pin) connectors use channel B.

When termination is enabled for a particular channel, the relevant connector can
only be used to connect a single-ended SCSI cable. If you want to use a double­ended configuration, you must disable the termination for that channel.

USB IRQ (Enabled)

Enabled reserves an IRQ# for the USB to work, Disabled does not allow the USB to
have an IRQ# and therefore prevents the USB from functioning. If you are not using
any USB devices, you may set this feature to Disabled to save an extra IRQ# for
expansion cards.

VGA BIOS Sequence (PCI/AGP)

If your computer has both PCI and AGP VGA cards, this field allows you to select
which of the cards will act as your primary card. The default, PCI/AGP, allows your
PCI card to take precedent when detected. AGP/PCI uses the AGP card as your
primary card.

IV. BIOS

Plug & Play / PCI

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IV. BIOS SOFTWARE

Load BIOS Defaults

The “Load BIOS Defaults” option allows you to load the troubleshooting default
values permanently stored in the BIOS ROM. These default settings are non-opti­mal and disable all high performance features. To load these default settings, high­light “Load BIOS Defaults” on the main screen and then press <Enter>. The system
displays a confirmation message on the screen. Press <Y> and then <Enter> to
confirm. Press <N> and then <Enter> to abort. This feature does not affect the
fields on the Standard CMOS Setup screen.

Load Setup Defaults

The “Load Setup Defaults” option allows you to load the default values to the sys­tem configuration fields. These default values are the optimized configuration set­tings for the system. To load these default values, highlight “Load Setup Defaults”
on the main screen and then press <Enter>. The system displays a confirmation
message on the screen. Press <Y> and then <Enter> to confirm. Press <N> and
then <Enter> to abort. This feature does not affect the fields on the Standard CMOS
Setup screen.

Load Defaults

IV. BIOS

Supervisor Password and User Password

These two options set the system passwords. “Supervisor Password” sets a pass­word that will be used to protect the system and the Setup utility; “User Password”
sets a password that will be used exclusively on the system. By default, the system
comes without any passwords. To specify a password, highlight the type you want
and then press <Enter>. A password prompt appears on the screen. T aking note that
the password is case sensitive, and can be up to 8 alphanumeric characters long, type
in your password and then press <Enter>. The system confirms your password by
asking you to type it again. After setting a password, the screen automatically re­verts to the main screen.

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IV. BIOS SOFTWARE

Supervisor Password and User Password

These two options set the system passwords. “Supervisor Password” sets a password
that will be used to protect the system and the Setup utility; “User Password” sets a
password that will be used exclusively on the system. By default, the system comes
without any passwords. To specify a password, highlight the type you want and then
press <Enter>. A password prompt appears on the screen. T aking note that the password
is case sensitive, and can be up to 8 alphanumeric characters long, type in your password
and then press <Enter>. The system confirms your password by asking you to type it
again. After setting a password, the screen automatically reverts to the main screen.

To implement password protection, specify in the “Security Option” field of the BIOS
Features Setup screen when the system will prompt for the password. If you want to
disable either password, press <Enter> instead of entering a new password when the
“Enter Password” prompt appears. A message confirms the password has been disabled.

Forgot the password?

If you forgot the password, you can clear the password by erasing the CMOS Real
Time Clock (RTC) RAM. The RAM data containing the password information is
powered by the onboard button cell battery. To erase the RTC RAM: (1) Unplug
your computer, (2) Short the solder points, (3) Turn ON your computer, (4) Hold
down <Delete> during bootup and enter BIOS setup to re-enter user preferences.

XG-DLS

R

IV. BIOS

Passwords

XG-DLS Real Time Clock RAM

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Short the solder points
to clear CMOS

solder points are labeled R242

IV. BIOS SOFTWARE

IDE HDD Auto Detection

The “IDE HDD Auto Detection” option detects the parameters of an IDE hard disk
drive, and automatically enters them into the Standard CMOS Setup screen.

Up to four IDE drives can be detected, with parameters for each listed inside the
box. To accept the optimal entries, press <Y> or else select from the numbers dis­played under the OPTIONS field (2, 1, 3 in this case); to skip to the next drive, press
<N>. If you accept the values, the parameters will appear listed beside the drive
letter on the screen. The process then proceeds to the next drive letter. Pressing

Hard Disk Detect

IV. BIOS

<N> to skip rather than to accept a set of parameters causes the program to enter
zeros after that drive letter.

Remember that if you are using another IDE controller that does not feature En­hanced IDE support for four devices, you can only install two IDE hard disk drives.
Your IDE controller must support the Enhanced IDE features in order to use Drive E
and Drive F. The onboard PCI IDE controller supports Enhanced IDE, with two
connectors for connecting up to four IDE devices. If you want to use another con­troller that supports four drives, you must disable the onboard IDE controller in the
Chipset Features Setup screen.

When auto-detection is completed, the program automatically enters all entries you
accepted on the field for that drive in the Standard CMOS Setup screen. Skipped
entries are ignored and are not entered in the screen.

If you are auto-detecting a hard disk that supports the LBA mode, three lines will
appear in the parameter box. Choose the line that lists LBA for an LBA drive. Do
not select Large or Normal.

The auto-detection feature can only detect one set of parameters for a particular IDE
hard drive. Some IDE drives can use more than one set. This is not a problem if the
drive is new and empty.

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IV. BIOS SOFTWARE

IMPORTANT: If your hard disk was already formatted on an older previous system,
incorrect parameters may be detected. You will need to enter the correct parameters
manually or use low-level format if you do not need the data stored on the hard disk.

If the parameters listed differ from the ones used when the disk was formatted, the
disk will not be readable. If the auto-detected parameters do not match the ones that
should be used for your disk, do not accept them. Press <N> to reject the presented
settings and enter the correct ones manually from the Standard CMOS Setup screen.

Save & Exit Setup

Select this option to save into the CMOS memory all modifications you specified
during the current session. To save the configuration changes, highlight the “Save
& Exit Setup” option on the main screen, type “Y”, and then press <Enter>.

Exit Without Saving

Select this option to exit the Setup utility without saving the modifications you specify
during the current session. To exit without saving, highlight the “Exit Without Sav­ing” option on the main screen and then press <Enter>.

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IV. BIOS

Save & Exit

IV. BIOS SOFTWARE

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IV. BIOS

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