ASUS P2L97-S User Manual

R

P2L97-S

Pentium® II 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
WARRANTIES OR CONDITIONS OF MERCHANT ABILITY OR FITNESS FOR A PAR­TICULAR PURPOSE. IN NO EVENT SHALL ASUS, ITS DIRECTORS, OFFICERS,
EMPLOYEES OR AGENTS BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDEN­TAL, OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF
PROFITS, LOSS OF BUSINESS, LOSS OF USE OR DATA, INTERRUPTION OF BUSI­NESS AND THE LIKE), EVEN IF ASUS HAS BEEN ADVISED OF THE POSSIBILITY
OF SUCH DAMAGES ARISING FROM ANY DEFECT OR ERROR IN THIS MANUAL
OR PRODUCT.

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

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

• 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 AWE32 and SB16 are trademarks of Creative Technology Ltd.

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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 © 1998 ASUSTeK COMPUTER INC. All Rights Reserved.

Product Name: ASUS P2L97-S
Manual Revision: 2.01
Release Date: April 1998

2

ASUS P2L97-S User’s Manual

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

ASUS COMPUTER INTERNATIONAL

Marketing

Address: 6737 Mowry Ave, 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 P2L97-S User’s Manual 3

CONTENTS

I. INTRODUCTION 7

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

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

II. FEATURES 8

Features of the ASUS P2L97-S Motherboard..................................... 8

The ASUS P2L97-S Motherboard ................................................ 9

III. INSTALLATION 10

Layout of the ASUS P2L97-S Motherboard ..................................... 10

Installation Steps............................................................................... 12

1. Jumpers ......................................................................................... 12

Jumper Settings ..................................................................... 13

2. System Memory (DIMM) ............................................................ 17

DIMM Memory Installation Procedures: .............................. 18

3. Central Processing Unit (CPU).................................................... 19

Pentium II Processor.............................................................. 19

AAVID Heatsink ................................................................... 23

Elan V ital Heatsink................................................................ 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

Power Connection Procedures .................................................... 33

IV. BIOS SOFTWARE 34

Support Software......................................................................... 34

Flash Memory Writer Utility....................................................... 34

Main Menu ............................................................................ 35

Advanced Features Menu ...................................................... 35

Managing & Updating your Motherboard’s BIOS...................... 36

6. BIOS Setup .................................................................................. 37

Load Defaults ........................................................................ 38

Standard CMOS Setup ................................................................ 38

Details of Standard CMOS Setup:......................................... 38

BIOS Features Setup ................................................................... 41

Details of BIOS Features Setup............................................. 41

4

ASUS P2L97-S User’s Manual

CONTENTS

Chipset Features Setup ................................................................ 44

Details of Chipset Features Setup.......................................... 44

Power Management Setup........................................................... 47

Details of Power Management Setup .................................... 47

PNP and PCI Setup ..................................................................... 50

Details of PNP and PCI Setup ............................................... 50

Load BIOS Defaults .................................................................... 52

Load Setup Defaults .................................................................... 52

Supervisor Password and User Password ................................... 53

IDE HDD Auto Detection ........................................................... 54

Save & Exit Setup ....................................................................... 55

Exit Without Saving .................................................................... 55

V. DESKTOP MANAGEMENT 56

Desktop Management Interface (DMI)............................................. 56

Introducing the ASUS DMI Configuration Utility ................ 56

System Requirements ............................................................ 56

Using the ASUS DMI Configuration Utility ......................... 57

VI. ADAPTEC SCSI SELECT 59

Configuring the SCSI Adapter .......................................................... 59

Configure/View Host Adapter Settings ................................. 59

SCSI Disk Utilities ...................................................................... 59

VII. ADAPTEC EZ-SCSI UTILITY 61

Quick Start Instructions .................................................................... 61

Windows95 or WindowsNT........................................................ 61

Windows/Windows for Workgroups 3.1x ................................... 61

DOS............................................................................................. 61

Troubleshooting Tips ........................................................................ 62

SCSI Device Troubleshooting ..................................................... 62

Windows95/WindowsNT Troubleshooting................................. 62

Information for DOS/Windows 3.1x Users ...................................... 65

DOS and Windows3.1x Device Drivers...................................... 65

DOS and Windows3.1x ASPI Managers..................................... 65

DOS Formatting Utilities ............................................................ 66

Low-level Formatter (scsifmt)............................................... 66

Formatter and Partitioner (afdisk) ......................................... 67

VIII. ADAPTEC 7800 FAMILY MANAGER SET (84 pages)

(Drivers for onboard Adaptec 7880 SCSI Chipset)

ASUS P2L97-S User’s Manual 5

FCC & DOC COMPLIANCE

Federal Communications Commission Statement

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

• This device may not cause harmful interference, and

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

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

• Re-orient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

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

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

WARNING! The use of shielded cables for connection of the monitor to the

graphics card is required to assure compliance with FCC regulations. Changes
or modifications to this unit not expressly approved by the party responsible for
compliance could void the user's authority to operate this equipment.

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.

6

ASUS P2L97-S User’s Manual

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. DMI Utility BIOS supported Desktop Management Interface
VI. Adaptec SCSI Select Adaptec SCSI Select utility
VII. Adaptec EZ-SCSI Adaptec EZ-SCSI utility
VIII. Adaptec 7800 Adaptec SCSI driver installation and usage

Item Checklist

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

I. INTRODUCTION

(Manual / Checklist)

ASUS P2L97-S motherboard
Retention mechanism & heatsink support
1 IDE ribbon cable
1 floppy ribbon cable
50-pin Fast SCSI cable
ASUS P2L97-S Support Drivers & Utilities

• Flash Memory Writer utility to update the FLASH BIOS

• Desktop Management Interface (DMI) utility

®

• LANDesk

• Adaptec SCSI drivers and utilities

• Readme files for descriptions and use of the files

• Technical Support Form
This user’s manual

Infrared module (optional)

Client Manager (LDCM) Software (with optional onboard LM78)

68-Pin Fast&Wide-SCSI cable (optional)

ASUS P2L97-S User’s Manual 7

II. FEATURES

Features of the ASUS P2L97-S Motherboard

The ASUS P2L97-S is carefully designed for the demanding PC user who wants
many features processed by the fastest CPU. This motherboard:

• Versatile Processor Support: Intel Pentium

• Intel Chipset: Features Intel’s 440LX AGPset with I/O subsystems.

• Adaptec SCSI Chipset: Features Adaptec’ s 7880 Ultra-Fast/Wide SCSI chipset.

®

II (233MHz–333MHz) processor.

(Specifications)

II. FEATURES

• Easy Installation: Equipped with BIOS that supports auto detection of hard

• ISA & PCI Expansion Slots: Provides one 16-bit ISA, three 32-bit PCI slots, and

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

• Desktop Management Interface (DMI): Supports DMI through BIOS, which

• PCI Bus Master IDE Controller: Comes with an onboard PCI Bus Master IDE

• Multi-Cache: Supports a Pentium

drives, PS/2 mouse, and Plug and Play devices to make setup of hard drives,
expansion cards, and other devices virtually automatic.

one ISA/PCI shared slot.

one parallel port with EPP and ECP capabilities. UAR T2 can also be directed from
COM2 to the Infrared Module for wireless connections.

allows hardware to communicate within a standard protocol creating a higher
level of compatibility. (Requires DMI-enabled components.) (See section V)

controller with two connectors that supports four IDE devices in two channels,
supports PIO Modes 3 and 4 and Bus Master IDE DMA Mode 2, and supports
Enhanced IDE devices, such as Tape Backup and CD-ROM drives. 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, 720K). BIOS supports IDE CD-ROM or SCSI device boot-up.

®

II processor with either 512KB, 256KB, or

0KB Pipelined Burst Level 2 cache in the Single Edge Contact (SEC) cartridge.

• Versatile Memory Support: Equipped with three DIMM sockets to support

(8, 16, 32, 64, or 128MB) 168-pin SDRAM/EDO memory modules up to 384MB.

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

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

busses to memory to CPU.

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

nent level interconnect targeted at 3D graphical display applications.

• Intelligence: Supports Fan Status Monitoring and Alarm, Temperature Moni-

toring and Alert, Voltage Monitoring and Alert, System Resources Alert, and
Virus Write Protection through the optional onboard LM78 Hardware Monitor
and Intel

8 ASUS P2L97-S User’s Manual

®

LANDesk Client Manager (LDCM) software.

II. FEATURES

The ASUS P2L97-S Motherboard

Intel 440LX AGPset

PS/2 Mouse (Top)
PS/2 K’board (Bottom)

USB Port 1 (Top)
USB Port 2 (Bottom)

COM 1
(Bottom)

Narrow/Wide SCSI Connectors

Adaptec’s 7880
Ultra-Fast/Wide

SCSI Chipset

Parallel (Top)
Serial (Bottom)

COM 2
(Bottom)

SEC CPU Slot
Floppy Disk Drive

Connector
3 DIMM

Sockets

Accelerated
Graphics Port

Multi-I/O

3 PCI Slots

Hardware
Monitor

II. FEATURES

(Motherboard Parts)

Programmable
2MB Flash ROM

1 ISA/PCI
Shared Slot

1 ISA Slot

Intel PIIX4 PCIset

ASUS P2L97-S User’s Manual 9

III. INSTALLATION

Layout of the ASUS P2L97-S Motherboard

34

68

PS/2

Mouse (top port)
Keyboard (bottom port)

PWR_FAN

ATX Power Connector

III. INSTALLATION

(Board Layout)

USB

USB 1 (top port)
USB 2 (bottom port)

COM 1

Parallel Port

COM 2

Floppy Disk Drives

CPU_FAN

R_CPU

Intel

440LX

AGPset

Single Edge Contact CPU Slot

68-Pin Wide SCSI

35

1

Adaptec

7880 SCSI

Chipset

50-Pin SCSI Connector

SCSI

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

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

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

BIOS Power

(CR2032 3V
Lithium Cell)

Secondary IDE

Primary IDE

Multi-I/O

Hardware

Monitor

LM78

WOL_CON

R_MB1

Thermal

Sensor

(Programable BIOS)

2MB Flash EEPROM

Accelerated Graphics Port

PCI Slot 1

R

PCI Slot 2

PCI Slot 3

PCI Slot 4

ISA Slot 1

ISA Slot 2

FS0
FS1
FS2

BUS FREQ

Intel PIIX4

PCIset

CLRTC

CHA_FAN

BF0

FREQ

BF1

RATIO

BF2
BF3

HDLED

Panel Connect.

IrDA

10 ASUS P2L97-S User’s Manual

III. INSTALLATION

Jumpers

1) SCSI p. 13 Onboard SCSI Setting

2) FS0, FS1, FS2 p. 14 CPU Bus Frequency

3) BF0, BF1, BF2, BF3 p. 14 CPU Core:Bus Frequency Multiple

4) CLRTC p. 15 Clear Real Time Clock (RTC) RAM

Expansion Slots/Sockets

1) System Memory p. 17 System Memory Support

2) DIMM Sockets p. 18 DIMM Memory Module Support

3) SEC CPU Slot p. 19 Single Edge Contact CPU Support

4) SLOT1, SLOT2 p. 24 16-bit ISA Bus Expansion Slots

5) PCI1, PCI2, PCI3, PCI4 p. 25 32-bit PCI Bus Expansion Slots

6) AGP p. 25 Accelerated Graphics Port

Hardware Monitor

1) R_CPU p. 22 Pentium II Processor Thermal Sensor Connector

Connectors

1) PS2KEYBOARD p. 26 PS/2 Keyboard Connector (6-pin female)

2) PS2MOUSE p. 26 PS/2 Mouse 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) FLOPPY p. 27 Floppy Drive Connector (34-1 pin block)

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

7) Primary / Second IDE p. 28 Primary / Secondary IDE Connector (40-pin blocks)

8) HDLED p. 29 IDE LED Activity Light (2 pins)

9) CHA_, CPU_, PWR_FAN p. 29 Chassis, CPU, Power Supply Fan Connectors (3-pin block)

10) IR p. 30 Infrared Port Module Connector (5 pins)

11) ATXPWR p. 30 ATX Motherboard Power Connector (20-pin block)

12) WOL p. 31 Wake on LAN (3 pins) (Reserved)

13) NARROW/WIDE SCSI p. 31 50-pin Fast SCSI II & 68-pin Fast&Wide SCSI III

14) TB_LED (PANEL) p. 32 LED Lead (2 pins)

15) SMI (PANEL) p. 32 SMI Switch Switch Lead (2 pins)

16) PWR_SW (PANEL) p. 32 ATX Power Switch / Soft Power Switch (2 pins)

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

18)

KEYLOCK (

19)

KEYLOCK (

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

PANEL
PANEL

)
)

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

*

†

(Board Layout)

III. INSTALLATION

*

The onboard hardware monitor uses the address 290H-297H so legacy ISA cards must not

use this address or else conflicts will occur.

†

PCI slots 4 share the same interrupt number (INT#) as the onboard SCSI so PCI slot 4 card

must be able to share an INT# or make sure that it does not use an INT# at all.

ASUS P2L97-S User’s Manual 11

III. INSTALLATION

Installation Steps

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

1. Set Jumpers

2. Install 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

1. Jumpers

Several hardware settings are made through the use of jumper caps to connect jumper
pins (JP) on the motherboard. See motherboard layout on page 10 for locations of

III. INSTALLATION

(Jumpers)

jumpers. The jumper settings will be described numerically such as [----], [1-2],
[2-3] for no connection, connect pins 1&2, and connect pins 2&3 respectively. Pin 1
for our motherboards is always on top
motherboard with the keyboard connector away from yourself. A “1” is written
besides pin 1 on jumpers with three pins. The jumpers will also be shown graphi­cally such as to connect pins 1&2 and to connect pins 2&3. Jumpers
with two pins will be shown as for Short (On) and for Open (Off). For
manufacturing simplicity, the jumpers may be sharing pins from other groups. Use
the diagrams in this manual instead of following the pin layout on the board. Settings
with two jumper numbers require that both jumpers be moved together. To connect
the pins, simply place a plastic jumper cap over the two pins as diagramed.

WARNING! Computer motherboards and expansion cards contain very delicate

Integrated Circuit (IC) chips. To protect them against damage from static electric­ity, you should follow some precautions whenever you work on your computer.

PIN 1

or on the left

PIN 1

when holding the

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.

12 ASUS P2L97-S User’s Manual

III. INSTALLATION

Jumper Settings

1. Onboard SCSI Setting (SCSI)

This motherboard gives you the option of using the onboard Adaptec 7880 SCSI
BIOS through either the PnP and PCI Setup of the BIOS SOFTWARE or the
use of jumper caps.

Selection SCSI

Enable [1-2]
Disable [2-3]

R

SCSI

123 123

SCSI

P2L97-S SCSI Setting

Enable

Disable

(Jumpers)

III. INSTALLATION

ASUS P2L97-S User’s Manual 13

III. INSTALLATION

(Jumpers)

III. INSTALLATION

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

This option tells the clock generator what frequency to send to the CPU. 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).

3. 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.

FS1

FS0

R

P2L97-S CPU Settings

FS2

60MHz 66MHz 75MHz 83MHz

CPU Bus Frequency

BF2

BF3

CPU Core:Bus Frequency Multiple

1
2
3

BF1

FS2

BF0

1
2
3

FS1

BF3

FS0

1
2
3

BF2

FS2

BF1

FS1

BF0

1
2
3

FS0

1
2
3

BF3

FS2

BF2

FS1

FS0

1
2
3

BF1

BF0

BF2

BF1

BF3

1
2
3

4.5x(9/2)4.0x(4/1)3.5x(7/2)2.0x(2/1) 5.0x(5/1)

BF0

1
2
3

BF3

BF2

BF1

BF0

WARNING! Frequencies above 66Mhz exceed the specifications for the onboard

Intel Chipset and are not guaranteed to be stable.

Intel Pentium II Processor in a SEC Cartridge
(233-333MHz 512KB/256KB/0KB L2 Cache)

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

(BUS Freq.) (Freq. Ratio)

CPU Model Freq. Ratio BUS F. FS2 FS1 FS0 BF3 BF2 BF1 BF0

Intel Pentium II 333MHz 5.0x 66MHz [1-2] [1-2] [1-2] [2-3] [1-2] [1-2] [2-3]
Intel Pentium II 300MHz 4.5x 66MHz [1-2] [1-2] [1-2] [2-3] [1-2] [2-3] [1-2]
Intel Pentium II 266MHz 4.0x 66MHz [1-2] [1-2] [1-2] [2-3] [1-2] [2-3] [2-3]
Intel Pentium II 233MHz 3.5x 66MHz [1-2] [1-2] [1-2] [2-3] [2-3] [1-2] [1-2]

IMPORTANT: Do not set the Frequency Ratio (BF) jumpers to all [2-3], this will
cause unexpected behaviors.

NOTES: Overclocking your processor is not recommended. It may result in a slower
speed. Voltage Regulator Output Selection (VID) is not needed for the Pentium II
processor because it sends a VID signal directly to the onboard power controller.

14 ASUS P2L97-S User’s Manual

III. INSTALLATION

4. Real Time Clock (RTC) RAM (CLRTC)

The CMOS RAM is powered by the onboard button cell battery. To clear the
RTC data: (1) Turn off your computer and unplug its AC power, (2) Short the
two solder points labeled CLRTC, (3) Turn on your computer, (4) Hold down
<Delete> during bootup and enter BIOS setup to re-enter user preferences.

R

Short the solder points to clear CMOS

CLRTC

P2L97-S Real Time Clock RAM (CLRTC)

(Jumpers)

III. INSTALLATION

ASUS P2L97-S User’s Manual 15

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III. INSTALLATION

(Jumpers)

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16 ASUS P2L97-S User’s Manual

III. INSTALLATION

2. System Memory (DIMM)

Only Dual Inline Memory Modules (DIMM’s) can be used with this motherboard.
T wo sockets are available for 3.3V olt (power level) Unbuffered Synchronous DRAMs
(SDRAM) or EDO DRAM of either 8, 16, 32, 64, or 128MB to form a memory size
between 8MB to 384MB. One side (with memory chips) of the DIMM module
takes up one Row on the motherboard.

T o 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 parity chip) and
make the proper settings in the BIOS Chipset Features Setup.

IMPORTANT: Memory speed setup is required through "Auto Configura­tion" in BIOS Chipset Features Setup.

Install memory in any combination as follows:

DIMM Location 168-pin DIMM Memory Modules Total Memory
Socket 1 (Rows 0&1) SDRAM/EDO 8, 16, 32, 64, 128MB x1
Socket 2 (Rows 2&3) SDRAM/EDO 8, 16, 32, 64, 128MB x1
Socket 3 (Rows 4&5) SDRAM/EDO 8, 16, 32, 64, 128MB x1

Total System Memory (Max 384MB) =

ASUS Memory Examples:

Parity EDO DIMM (9 chips)

Non-Parity SDRAM DIMM (8 chips)

(System Memory)

III. INSTALLATION

General DIMM Notes: (not true for all memory modules)

• Four possible memory chips are supported: EDO or SDRAM with and without parity.

• SDRAM chips are generally thinner with higher pin density than EDO chips.

• BIOS shows EDO or SDRAM memory on bootup screen.

• 8 chip/side modules do not support parity, only 9 chip/side modules support parity.

• Single sided modules are usually 16 or 64 MB, double sided are usually 8, 32, or 128MB.

ASUS P2L97-S User’s Manual 17

III. INSTALLATION

DIMM Memory Installation Procedures:

Insert the module(s) as shown. Because the number of pins are different on either
side of the breaks, the module will only fit in the orientation as shown. DRAM
SIMM modules have the same pin contact on both sides. SDRAM DIMM modules
have a different pin contact on each side and therefore have a higher pin density.

R

III. INSTALLATION

(System Memory)

P2L97-S 168-Pin DIMM Memory Sockets

The Dual Inline Memory Module (DIMM) memory modules must be 3.3Volt Un­buffered Synchronous DRAM (SDRAM) or Extended Data Output (EDO) . You
can identify the type of DIMM module by the illustration below:

168-Pin DIMM Notch Key Definitions (3.3V)

DRAM Key Position

RFU

Buffered

Unbuffered

20 Pins

Voltage Key Position

5.0V

60 Pins

(FRONT)

Reserved

3.3V

88 Pins

Lock

The notch on the DIMM module will shift between left, center, or right to identify
the type and also to prevent the wrong type to be inserted into the DIMM slot on the
motherboard. You must ask your retailer for the specifications before purchasing.
Four clock signals are supported on this motherboard.

18 ASUS P2L97-S User’s Manual

III. INSTALLATION

3. Central Processing Unit (CPU)

The ASUS P2L97-S motherboard provides a Single Edge Contact (SEC) slot for a
Pentium II processor packaged in an SEC cartridge.

Pentium II Processor

WARNING! Be sure that sufficient air circulation is available across the

processor’s passive heatsink. Without sufficient circulation, the processor could
overheat and damage both the processor and the motherboard. You may install
an auxiliary fan, if necessary.

You should check to see that you have the following 9 items.
NOTE: The pictures in the following pages will have the same item numbers next to
them for your reference. The design and color of your items may be slightly different.

(1)

(2)

Attach Mount Bridges (Items 1,2)

Top Bar (4)

(5)

Heatsink Support Base/Top Bar (Items 4-7)

Pin

Posts

(6)

Base (7)

Lock Holes

Captive Nut

(3)

Pentium II Retention Mechanism (Item 3)

(8)

Larger Fin should
be on the bottom.

Pentium II Processor Heatsink (Item 8)

Heatsink bottom Groove
for the Support Top Bar

(CPU)

III. INSTALLATION

Intel Pentium II Processor in a SEC Cartridge
(233-333MHz 512KB/256KB/0KB L2 Cache)

CPU (Item 9)

ASUS P2L97-S User’s Manual 19

III. INSTALLATION

III. INSTALLATION

The ASUS P2L97-S As Shipped

Four screws should be showing next to each corner of the SEC CPU Slot using two
attach mount bridges from the underside of the motherboard. A bottom heatsink
support base must be mounted over the two chipsets located to the side of the slot.

SEC CPU slot

NOTE: Encircled items are screws
from the mount bridges (1 & 2)

(CPU)

Installing the Pentium II Processor

1. Mount the Pentium II Retention Mechanism: The retention mechanism is

designed to fit into the SEC slot only one way.

TIP: Orient the mechanism’s lock holes toward the motherboard’s chipset (see
motherboard layout for the location of the Intel 440LX AGPset).

Be sure to align the notch in the mechanism with the small rib on one side of the
slot and that the mechanism is properly seated on the board. Then, screw the
captive nuts in place.

WARNING! Do not overtighten the captive nuts. Doing so could damage your

motherboard. Tighten captive nuts to no more than 6±1 inch/pound.

Lock holes

Captive nut

20 ASUS P2L97-S User’s Manual

Captive nut

III. INSTALLATION

2. Mount the Heatsink: Place the SEC cartridge face down on a flat surface and lay

the heat sink flush on the back (metal side) of the SEC cartridge. Check the orien­tation of the heatsink against the pictures. The thicker fin must be orientated
toward the bottom. The top clamp is wider than the bottom clamp so only this
orientation will fit. With a screw driver, push the clamps one at a time into the
SEC cartridge. Be sure that the heatsink is firmly pressed against the SEC car­tridge. When correctly installed, no light must be showing through between the
thermal pad of the heatsink and the SEC cartridge.

WARNING! If the heatsink is not mounted tightly against the SEC cartridge,

the CPU will overheat. You may install an auxiliary fan to provide adequate
circulation across the processor’s passive heatsink.

(8)

Push Clamp

Push Clamp

SEC Cartridge with Heatsink (Side View)

(9)

Push each end of the clamps until they lock

(8)

Lock

(9)

The thermal pad & SEC cartridge should not have a gap!

SEC Cartridge with Heatsink (Top View)

Lock

3. Insert the SEC Cartridge: Push the SEC cartridge’s two locks inward (the

preceding picture shows the locks in the outward position and inward in the
picture below). With the heatsink facing the motherboard’s chipsets, press the
cartridge gently but firmly until it is full inserted.

(9)

(8)

Push lock inward

(CPU)

III. INSTALLATION

(3)

ASUS P2L97-S User’s Manual 21

III. INSTALLATION

(CPU)

III. INSTALLATION

4. Secure the SEC Cartridge: Secure the SEC cartridge in place by pushing the

SEC cartridge locks outward so that the lock shows through the retention
mechanism’s lock holes.

(3)

(3)

(8)

5. Secure the Heatsink: Install the heatsink support base into the motherboard.

This is not, however, necessary if you use a heatsink with fan (see next page).
The support base is necessary to secure the heatsink (without fan). Secure the
heatsink by sliding the heatsink support top bar into the bottom groove of the
heatsink until it locks into the heatsink support base posts.

(9)

(8)

Heatsink support
top bar (4)

Heatsink support
base (7)

Heatsink support
base post

6. Connect the Heat Sensor Cable to the R_CPU (optional): If you purchased

the specially designed fan and thermal monitor heatsink, you can connect the
heat sensor cable to the motherboard’s CPU heat sensor connector (R_CPU).

R_CPU

R

P2L97-S CPU Thermal Sensor Connector

22 ASUS P2L97-S User’s Manual

III. INSTALLATION

The heatsinks shown in this manual are for reference purposes only. The recom­mended heatsinks for the Pentium II processor are those with three-pin fans that can
be connected to the CPU fan connector on motherboard. These heatsinks have the
added benefits of proper heat dissipation and with the LM78 hardware monitor , the
ability to monitor the fan’s RPM and use the alert function through the included
LANDesk Client Manager (LDCM) software.

AAVID Heatsink

The procedures for installing the AAVID heatsink with fan is similar as that for the
heatsink without a fan. You will not, however, be able to use the heatsink support top
bar because of the fan. The heatsink support top bar will, however, still be included
in the package, in case you use a heatsink without a fan.

Elan Vital Heatsink

The procedures for installing the Elan V ital heatsink with fan is also similar as that for
the heatsink without a fan. The Elan Vital heatsink, however, comes with a lever to
clamp the heatsink into the SEC cartridge. Mount the heatsink in the orientation as
shown then flip the lever from “Unlock” to “Lock.” You will not be able to also use the
heatsink support top bar because of the fan. The heatsink support top bar will, how­ever, still be included in the package, in case you use a heatsink without a fan.

(CPU)

III. INSTALLATION

ASUS P2L97-S User’s Manual 23

III. INSTALLATION

4. Expansion Cards

WARNING! Unplug your power supply when adding or removing expansion

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

First read your expansion card documentation for hardware and software settings
that may be required to set up your specific card.

Expansion Card Installation Procedure

1. Read the documentation for your expansion card.

2. Set any necessary jumpers on your expansion card.

3. Remove your computer system’s cover.

III. INSTALLATION

(Expansion Cards)

4. Remove the bracket on the slot you intend to use. Keep the bracket for possible

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

6. Secure the card on the slot with the screw you removed in step 4.

7. Replace the computer system’s cover.

8. Set up the BIOS if necessary

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

Assigning IRQs for Expansion Cards

Some expansion cards need to use an IRQ to operate. Generally an IRQ must be
exclusively assigned to one use. In a standard design there are 16 IRQs available but
most of them are already in use, leaving 6 IRQs free for expansion cards.

Both ISA and PCI expansion cards may require to use IRQs. System IRQs are avail­able to cards installed in the ISA expansion bus first, then any remaining IRQs are
available to PCI cards. Currently , there are two types of ISA cards. The original ISA
expansion card design, now referred to as legacy ISA cards, requires that you con­figure the card’ s jumpers manually and then install it in any available slot on the ISA
bus. You may use Microsoft Diagnostics (MSD.EXE) utility located in the Win­dows directory to see a map of your used and free IRQs. If you use W indows 95, the
Resources tab under Device Manager displays the resource settings being used by
a particular device (to gain access, double-click the System icon under the Control
Panel program). Ensure that no two devices share the same IRQs or your computer
will experience problems when those two devices are in use at the same time.

future use.

(such as IRQ xx Used By ISA: Yes in PNP AND PCI SETUP)

24 ASUS P2L97-S User’s Manual

III. INSTALLATION

To simplify this process, this motherboard complies with the Plug and Play (PnP)
specification, which was developed to allow automatic system configuration when­ever a PnP-compliant card is added to the system. For PnP cards, IRQs are assigned
automatically from those available.

If the system has both legacy and PnP ISA cards installed, IRQs are assigned to PnP
cards from those not used by legacy cards. The PCI and PNP configuration section
of the BIOS setup utility can be used to assign which IRQs are being used by legacy
cards. For older legacy cards that do not work with the BIOS, you may contact your
vendor for an ISA Configuration Utility.

An IRQ number is automatically assigned to PCI expansion cards after those used
by legacy and PnP ISA cards. In the PCI bus design, the BIOS automatically assigns
an IRQ to a PCI slot that contains a card requiring an IRQ. T o install a PCI card, you
need to set the INT (interrupt) assignment. Since all the PCI slots on this mother­board use an INTA #, set the jumpers on your PCI cards to INT A.

Assigning DMA Channels for ISA Cards

Some ISA cards, both legacy and PnP, may also need to use a DMA (Direct Memory
Access) channel. DMA assignments for this motherboard are handled the same way
as the IRQ assignment process described earlier. You can select a DMA channel in
the PCI and PnP configuration section of the BIOS Setup utility.

IMPORTANT: To avoid conflicts, reserve the necessary IRQs and DMAs for legacy
ISA cards (under PNP AND PCI SETUP of the BIOS SOFTWARE, choose Yes in IRQ
xx Used By ISA and DMA x Used By ISA for those IRQs and DMAs you want to reserve).

ISA Cards and Hardware Monitor

The onboard hardware monitor uses the address 290H-297H so legacy ISA cards
must not use this address or else conflicts will occur.

Accelerated Graphics Port

This motherboard provides an accelerated graphics port (AGP) slot to support a new
generation of graphics cards with ultra-high memory bandwidth.

(AGP)

III. INSTALLATION

R

P2L97-S Accelerated Graphics Port (AGP)

ASUS P2L97-S User’s Manual 25

III. INSTALLATION

(Connectors)

III. INSTALLATION

5. External Connectors

WARNING! Some pins are used for connectors or power sources. Placing jumper

caps over these will cause damage to your motherboard.

IMPORTANT: Ribbon cables should always be connected with the red stripe on the
Pin 1 side of the connector. The four corners of the connectors are labeled on the
motherboard. Pin 1 is the side closest to the power connector on hard drives and floppy
drives. IDE ribbon cable must be less than 18in. (46cm), with the second drive con­nector no more than 6in. (15cm) from the first connector .

1. PS/2 Keyboard Connector (6-pin Female)
This connection is for a standard keyboard using an PS/2 plug (mini DIN). This
connector will not allow standard A T size (large DIN) keyboard plugs. You
may use a DIN to mini DIN adapter on standard AT keyboards.

PS/2 Keyboard (6-pin Female)

2. PS/2 Mouse Connector (6-pin Female)

The system will direct IRQ12 to the PS/2 mouse if one is detected. If not de­tected, expansion cards can use IRQ12. See “PS/2 Mouse Function Control” in
BIOS Features Setup of the BIOS SOFTWARE.

PS/2 Mouse (6-pin Female)

26 ASUS P2L97-S User’s Manual

III. INSTALLATION

3. Parallel Printer Connector (25-pin Female)

You can enable the parallel port and choose the IRQ through “Onboard Parallel
Port” in Chipset Features Setup of the BIOS SOFTWARE. NOTE: Serial print­ers must be connected to the serial port.

Parallel (Printer) Port (25-pin Female)

4. Serial Port COM1 and COM2 Connectors (Two 9-pin Male)

The two serial ports can be used for pointing devices or other serial devices. See
“Onboard Serial Port...” in Chipset Features Setup of the BIOS SOFTWARE.

COM 1 COM 2

Serial Ports (9-pin Male)

5. Floppy Disk Drive Connector (34-1pin FLOPPY)

This connector supports the provided floppy disk drive ribbon cable. After con­necting the single end to the board, connect the two plugs on the other end to the
floppy drives. (Pin 5 is removed to prevent inserting in the wrong orienta-

tion when using ribbon cables with pin 5 plugged).

NOTE: Orient the red stripe to Pin 1

R

Pin 1

Floppy Disk Drive Connector

(Connectors)

III. INSTALLATION

P2L97-S Floppy Disk Drive Connector

ASUS P2L97-S User’s Manual 27

III. INSTALLATION

(Connectors)

III. INSTALLATION

6. Universal Serial BUS Ports 1 & 2 (Two 4-pin Female)

Two USB ports are available for connecting USB devices.

USB 1

Universal Serial Bus (USB) 2

7. Primary / Secondary IDE connectors (Two 40-1pin IDE)

These connectors support the provided IDE hard disk ribbon cable. After con­necting the single end to the board, connect the two plugs at the other end to
your hard disk(s). If you install two hard disks, you must configure the second
drive to Slave mode by setting its jumper accordingly. Please refer to the docu­mentation of your hard disk for the jumper settings. BIOS now supports SCSI
device or IDE CD-ROM bootup (see “HDD Sequence SCSI/IDE First” & “Boot
Sequence” in the BIOS Features Setup of the BIOS SOFTWARE) (Pin 20 is

removed to prevent inserting in the wrong orientation when using ribbon
cables with pin 20 plugged).

TIP: You may configure two hard disks to be both Masters using one ribbon

cable on the primary IDE connector and another ribbon cable on the secondary
IDE connector. You may install one operating system on an IDE drive and an­other on a SCSI drive and select the boot disk through BIOS Features Setup.

R

P2L97-S IDE Connectors

NOTE: Orient the red stripe to Pin 1

Secondary IDE Connector
Pin 1
Pin 1

Primary IDE Connector

28 ASUS P2L97-S User’s Manual

III. INSTALLATION

8. Hard Disk Activity LED (2-pin HDLED)

This connector supplies power to the cabinet’s hard disk or IDE activity LED.
Read and write activity by devices connected to the Primary or Secondary IDE
connectors will cause the LED to light up.

HDLED

R

TIP: If the case-mounted LED does not light,

P2L97-S Hard Disk Activity LED

9. Chassis , CPU , & Power Supply Fan Connectors (3-pin FANPWR)

These connectors support cooling fans of 500mAMP (6WATT) or less. Orien­tate the fans so that the heat sink fins allow airflow to go across the onboard heat
sink(s) instead of the expansion slots. Depending on the fan manufacturer, the
wiring and plug may be different. The red wire should be positive, while the
black should be ground. Connect the fan’s plug to the board taking into consid­eration the polarity of the this connector.

NOTE: The “Rotation” signal is to be used only by a specially designed fan
with rotation signal.

try reversing the 2-pin plug.

(Connectors)

III. INSTALLATION

WARNING! The CPU and/or motherboard will overheat if there is no airflow

across the CPU and onboard heatsinks. Damage may occur to the motherboard
and/or the CPU fan if these pins are incorrectly used. These are not jumpers,

do not place jumper caps over these pins.

Rotation

Ground

+12V

R

CPU Fan Power

Rotation

+12V

Ground

Chassis Fan Power

P2L97-S 12Volt Cooling Fan Power

Ground
+12V
Rotation

Power Supply

Fan Power

ASUS P2L97-S User’s Manual 29

III. INSTALLATION

10. IrDA-Compliant infrared module connector (5-pin IR)

This connector supports the optional wireless transmitting and receiving infrared
module. This module mounts to a small opening on system cases that support this
feature. You must also configure the setting through “UART2 Use Infrared” in
Chipset Features Setup to select whether UAR T2 is directed for use with COM2
or IrDA. Use the five pins as shown on the Back V iew and connect a ribbon cable
from the module to the motherboard according to the pin definitions.

III. INSTALLATION

(Connectors)

Back View

IRTX
GND

+5V
(NC)

IRRX

R

(NC)

GND

P2L97-S Infrared Module Connector

Front View

+5V
IRRX
IRTX

For the infrared feature to be available,
you must connect the optional Infrared
(IrDA) module to the motherboard

11. ATX Power Supply Connector (20-pin ATXPWR)

This connector connects to a ATX power supply. The plug from the power sup­ply will only insert in one orientation because of the different hole sizes. Find
the proper orientation and push down firmly but gently making sure that the pins
are aligned.

R

P2L97-S ATX Power Connector

+12.0Volts

+5V Standby

Power Good

Ground

+5.0 Volts

Ground

+5.0 Volts

Ground
+3.3 Volts
+3.3 Volts

+5.0 Volts
+5.0 Volts

-5.0 Volts
Ground
Ground
Ground
Power Supply On
Ground

-12.0Volts
+3.3Volts

IMPORTANT: Make sure that your ATX power supply can supply at least
10mAmp on the 5-volt standby lead (5VSB). You may experience difficulty in
powering on your system if your power supply cannot support the load. For
W ake on LAN support, your ATX power supply must supply at least 720mAmp.

30 ASUS P2L97-S User’s Manual

III. INSTALLATION

12. Wake on LAN (3-pin WOL) (Reserved for future use)

This connector connects to LAN cards with a Wake On LAN output. When the
system is in soft-off mode, LAN activity will power on the system.

PME
Ground
+5 Volt Standby

R

IMPORTANT: Requires an ATX power
supply with at least 720ma +5-volt
standby power

P2L97-S Wake on LAN Connector

13. Ultra-Fast SCSI & Ultra-Wide SCSI Connectors

This motherboard has onboard 50-Pin Ultra-Fast SCSI connector for 8-bit SCSI
devices and 68-Pin Ultra-Wide SCSI connector for 16-bit SCSI devices.

50-pin Fast SCSI II Connector

R

68-pin Fast & Wide SCSI III Connector

P2L97-S Onboard SCSI Connectors

IMPORTANT: The 68-Pin Ultra-Wide SCSI Connector is always terminated and
will only work as an end device.

R

motherboard is an end device
and has permanent termination

Wide SCSI
device

middle SCSI devices must
not be terminated

Wide SCSI
device

Wide SCSI
device (end)

last SCSI device
must be terminated

(Connectors)

III. INSTALLATION

NOTE: Up tp 15 devices can be connected with 50-Pin Fast-SCSI and 68-Pin
Ultra-Wide SCSI combined.

ASUS P2L97-S User’s Manual 31

III. INSTALLATION

(Connectors)

III. INSTALLATION

14. LED Lead (TB_LED)

This indicates whether a message has been received from a fax/modem. The
LED will remain lit when there is no signal and blink when there is data transfer
or waiting in the inbox. This function requires OS and driver support.

15. SMI Suspend Switch Lead (SMI)

This allows the user to manually place the system into a suspend mode or “Green”
mode where system activity will be decreased to save electricity and expand the
life of certain components when the system is not in use. This 2-pin connector
connects to the case-mounted suspend switch. If you do not have a switch for
the connector, you may use the “T urbo Switch”. SMI is activated when it detects
a short to open moment and therefore leaving it shorted will not cause any prob-
lems. This may require one or two presses depending on the position of the
switch. W ake-up can be controlled by settings in the BIOS but the keyboard will
always allow wake-up (the SMI lead cannot wake up the system). If you want to
use this connector, set “Suspend Mode” under the Power Management Setup
of the BIOS SOFTWARE section to the preferred time after which the system
must go into suspend mode when you press the switch.

16. ATX Power Switch / Soft Power Switch (PWR_SW)

The system power is controlled by a momentary switch connected to this lead.
Pressing the button once will switch the system between ON and SLEEP. Press­ing the switch while in the ON mode for more than 4 seconds will turn the
system off. The system power LED shows the status of the system’s power.

17. Reset Switch Lead (RESET)

This 2-pin connector connects to the case-mounted reset switch for rebooting
your computer without having to turn off your power switch. This is a preferred
method of rebooting to prolong the life of the system’s power supply.

18. System Power LED (KEYLOCK)

This 3-pin connector connects the system power LED, which lights when the
system is powered on and blinks when it is in sleep mode.

19. Keyboard Lock Switch Lead (KEYLOCK)

This 2-pin connector connects to the case-mounted key switch to allow key­board locking.

20. Speaker Connector (SPEAKER)

This 4-pin connector connects to the case-mounted speaker.

Turbo LED

R

SMI Lead
ATX Power

Switch*

Reset SW

*

Requires an ATX power supply.

+5 V
TB_LED
ExtSMI#

Ground

PWR_SW

+3VSB

ResetCon

Ground

P2L97-S System Panel Connections

32 ASUS P2L97-S User’s Manual

+5 V

PLED
KEYLOCK

Ground

+5V
Ground
Ground
SPKR

Power LED
Keyboard Lock

Speaker
Connector

III. INSTALLATION

Power Connection Procedures

1. After all jumpers and 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.

).

III. INSTALLATION

(Power Connections)

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?. The system will give three quick beeps
after about 30 seconds and then power off after Windows shuts down.

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

ASUS P2L97-S User’s Manual 33

IV. BIOS SOFTWARE

Flash Memory Writer Utility

This motherboard has an onboard SCSI BIOS and boot virus protection and therefore, re­quires a 2Mbit flash ROM.

AFLASH.EXE: This is the Flash Memory W riter utility that updates the BIOS by uploading
a new BIOS file to the 2Mbit 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:\440XX-1 and then press <Enter>.

ASUS P2L97-S User’s Manual34

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:\XX2I1001.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 Suc-
cessfully will be displayed.

Follow the onscreen instructions
to continue.

IV. BIOS

(Flash Memory Writer)

ASUS P2L97-S User’s Manual 35

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 P2L97-S User’s Manual36

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 P2L97-S User’s Manual 37

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

This “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 precedong 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 P2L97-S User’s Manual38

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). Press <Enter> twice if you do not want to modify the current time.
NOTE: You can bypass the date and time prompts by creating an AUT OEXEC.BA T

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, Large, LBA, or Auto (see be-
low). 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 sup-
port 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 P2L97-S User’s Manual 39

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: 360KB, 5.25 in.; 1.2MB, 5.25 in.; 720KB,

(Standard CMOS)

IV. BIOS

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

To enter the configuration value for a particular drive, highlight its corresponding
field and then select the drive type using the left- or right-arrow 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 49, 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 P2L97-S User’s Manual40

IV. BIOS SOFTWARE

BIOS Features Setup

This “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 softwares, you may have to set this to Disabled to prevent write errors.

IV. BIOS

(BIOS Features)

ASUS P2L97-S User’s Manual 41

IV. BIOS SOFTWARE

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
using a SCSI hard disk drive.

(BIOS Features)

IV. BIOS

Boot Sequence (A,C)

This field determines where the system looks first for an operating system. Options
are A,C; A,CDROM,C; CDROM,C,A; D,A; E,A; F,A; C only; LS/ZIP, C; and 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 field enables or disables S.M.A.R.T. IDE hard disk drive features.

ASUS P2L97-S User’s Manual42

IV. BIOS SOFTWARE

Security Option (System)

When you specify a Supervisor Password and/or User Password (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.

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.

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.

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.

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

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.

IV. BIOS

(BIOS Features)

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.

ASUS P2L97-S User’s Manual 43

IV. BIOS SOFTWARE

Chipset Features Setup

This “Chipset Features Setup” option controls the configuration of the board’ s chipset.
Control keys for this screen are the same as in the previous screen.

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

Details of Chipset Features Setup

EDO Auto Configuration (60ns DRAM)

The default setting of 60ns DRAM sets the optimal timings for items 2 through 5 for
60ns DRAM modules. If you are using 70ns DRAM modules, you must change this
item to 70ns DRAM. See section III for DRAM installation information.

(Chipset Features)

IV. BIOS

SDRAM Configuration (12ns SDRAM)

Leave on default setting.

SDRAM RAS to CAS Delay (Auto)

Leave on default setting.

SDRAM RAS Precharge Time (Auto)

Leave on default setting.

MA Wait State (Auto)

Leave on default setting.

SDRAM Banks Close Policy (Arbitration)

Leave on default setting.

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

Timing for 16-bit ISA cards. Leave on default setting.

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

Timing for 8-bit ISA cards. Leave on default setting.

Graphics Aperture Size (64MB)

Leave on default setting.

ASUS P2L97-S User’s Manual44

IV. BIOS SOFTWARE

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 or else your system may not boot.

PCI 2.1 Support (Enabled)

This function allows you to enable or disable PCI 2.1 features. Leave on the default
Enabled 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 DRAM modules have parity chips (e.g., 8 chips + 4 parity chips), they
are considered 36bits. This motherboard sums the memory per bank and therefore
two modules will give 72bits and the following will be displayed:

If your DRAM modules do not have parity chips (e.g., 8 chips), they are considered
32bits 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 DRAM array. EC-Only data errors are detected but not corrected. ECC
allowas a detection of single-bit and multiple-bit errors and recovery of single-bit
errors. (See section III for more information on DRAM 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 P2L97-S User’s Manual 45

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 data transfer
rate; ECP+EPP allows normal speed operation in a two-way mode.

(Chipset Features)

IV. BIOS

ECP DMA Select (3)

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 infrared 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 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
auto-detection to ensure optimal performance.

ASUS P2L97-S User’s Manual46

IV. BIOS SOFTWARE

Power Management Setup

This “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 W in­dows 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 P2L97-S User’s Manual 47

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 Doze, Standby and Suspend sys­tem inactivation modes.

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: 1 Min, 2 Min, 4
Min, 8 Min, 10 Min, 20 Min, 30 Min, 1 Hour, 2 Hour, and 4 Hour.

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

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. No Function disables the ATX switch function when the button is pressed
under 4 seconds. Regardless of the setting, holding the ATX switch for more than 4
seconds will power off the system.

ASUS P2L97-S User’s Manual48

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 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.

Wake on LAN (Enabled)

Enable allows the ASUS PCI-L101 fast Ethernet card to power up the system using
the proper software. Disable turns off this feature.

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). These
values refresh upon any key entries in the BIOS setup screen. 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 (thermal-sensing heatsink
required for Pentium II processor) and MB (motherboard) temperatures. These val­ues refresh upon key entries. Set to Ignore i f unavailable.

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

Voltage Monitor (xx.xV)

The onboard hardware monitor is able to detect the voltages put out by the voltage
regulators. These values refresh upon key entries. Set to Ignore if unavailable.

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”.

IV. BIOS

(Power Management)

ASUS P2L97-S User’s Manual 49

IV. BIOS SOFTWARE

PNP and PCI Setup

This “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 (RIGHT) IRQ to Slot 4/5 (LEFT) 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, 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.

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

ASUS P2L97-S User’s Manual50

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)

Auto enables the onboard Adaptec 7880 SCSI BIOS. If you do not want to use the
onboard Adaptec 7880 SCSI BIOS, choose Disabled.

ONB AHA BIOS First (No)

This allows you to select whether you want the onboard SCSI to boot first by select­ing Y es or for an external SCSI card to boot first by selecting No.

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 do not use
USB devices, you may Disable this feature to save an extra IRQ# for expansion cards.

IV. BIOS

(Plug & Play / PCI)

ASUS P2L97-S User’s Manual 51

IV. BIOS SOFTWARE

Load BIOS Defaults

This “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

This “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

ASUS P2L97-S User’s Manual52

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. Taking 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.

NOTE: If you forget the password, see Clear Time Clock (Jumpers) in section III
for procedures on clearing the CMOS.

IV. BIOS

(Passwords)

ASUS P2L97-S User’s Manual 53

IV. BIOS SOFTWARE

IDE HDD Auto Detection

This “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

(Hard Disk Detect)

IV. BIOS

letter on the screen. The process then proceeds to the next drive letter. Pressing
<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.

ASUS P2L97-S User’s Manual54

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 W ithout Sav­ing” option on the main screen and then press <Enter>.

ASUS P2L97-S User’s Manual 55

IV. BIOS

(Save & Exit)

V. DESKTOP MANAGEMENT

Desktop Management Interface (DMI)

Introducing the ASUS DMI Configuration Utility

This motherboard supports DMI within the BIOS level and provides a DMI Con­figuration Utility to maintain the Management Information Format Database (MIFD).
DMI is able to auto-detect and record information pertinent to a computer’s system
such as the CPU type, CPU speed, and internal/external frequencies, and memory
size. The onboard BIOS will detect as many system information as possible and
store those collected information in a 4KB block in the motherboard’ s Flash EPROM
and allow the DMI to retrieve data from this database. Unlike other BIOS software,
the BIOS on this motherboard uses the same technology implemented for Plug and
Play to allow dynamic real-time updating of DMI information versus creating a new
BIOS image file and requiring the user to update the whole BIOS. This DMI Con­figuration Utility also allows the system integrator or end user to add additional
information into the MIFD such as serial numbers, housing configurations, and ven­dor information. Those information not detected by the motherboard BIOS and has
to be manually entered through the DMI Configuration Utility and updated into the
MIFD. This DMI Configuration Utility provides the same reliability as PnP updat­ing and will prevent the refreshing failures associated with updating the entire BIOS.

System Requirements

The DMI Configuration Utility (DMICFG2.EXE) must be used in real mode in
order for the program to run, the base memory must be at least 180K. Memory
managers like HIMEM.SYS (required by windows) must not be installed. You can
boot up from a system diskette without AUT OEXEC.BAT and CONFIG.SYS files,
“REM” HIMEM.SYS in the CONFIG.SYS, or press <F5> during bootup to bypass
your AUTOEXEC.BAT and CONFIG.SYS files.

(DMI Introduction)

V. DMI

ASUS P2L97-S User’s Manual56

V. DESKTOP MANAGEMENT

Using the ASUS DMI Configuration Utility

Edit DMI (or delete)

Use the ←→ (left-right) cursors to move the top menu items and the ↑↓ (up-down)
cursor to move between the left hand menu items. The bottom of the screen will
show the available keys for each screen. Press enter at the menu item to enter the
right hand screen for editing. “Edit component” appears on top. The reversed color
field is the current cursor position and the blue text are available for editing. The
orange text shows auto-detected information and are not available for editing. The
blue text “Press [ENTER] for detail” contains a second pop-up menu is available,
use the + - (plus-minus) keys to change the settings. Enter to exit and save, ESC to
exit and not save.

If the user has made changes, ESC will prompt you to answer Y or N. Enter Y to go
back to the left-hand screen and save, enter N to go back to left-hand screen and not
save. If editing has not been made, ESC will send you back to the left hand menu
without any messages.

Notes

A heading, *** BIOS Auto Detect *** appears on the right for each menu item on the left
side that has been auto detected by the system BIOS.

A heading,
modified by the user.

*** User Modified *** will appear on the right for menu items that has been

V. DMI

(Using DMI Utility)

ASUS P2L97-S User’s Manual 57

V. DESKTOP MANAGEMENT

Save MIFD

Y ou can save the MIFD (normally only saved to flash ROM) to a file by entering the
drive and path here. If you want to cancel save, you may press ESC and a message
“Bad File Name” appears here to show it was not saved.

Load MIFD

You can load the disk file to memory by entering a drive and path and file name
here.

Load BIOS Defaults

(Using DMI Utility)

V. DMI

You can load the BIOS defaults from a MIFD file and can clear all user modified
and added data. You must reboot your computer in order for the defaults to be saved
back into the Flash BIOS.

ASUS P2L97-S User’s Manual58

VI. ADAPTEC SCSI SELECT

Configuring the SCSI Adapter

Access the SCSI BIOS by holding down both CTRL and A keys when you see the
BIOS banner message listing the driver name and the attached devices. For ex­ample:

Adaptec AIC-7880 Ultra/Wide W BIOS v1.24
(c) 1996 Adaptec, Inc. All Rights Reserved.

<<< Press <Ctrl><A> for SCSISelect(TM) Utility! >>>

The SCSISelect screen will come up. Instructions on how to move the cursor and
select options are listed on the bottom of the program windows. You can select
either Configure/View Host Adapter Settings or SCSI Disk Utilities.

Configure/View Host Adapter Settings

Host Adapter SCSI T ermination......................................................Low ON/High ON

• When using 50-Pin connector only, choose “Low ON/High ON” (Default)

• When using 68-Pin connector only, choose “Low ON/High ON” (Default)

• When using both 50-Pin & 68-Pin, choose “Low OFF/High ON”

Select the default of “Low ON/High ON” and press Enter, then use the up and down
arrows to make your new selection and press Enter. Press ESC to go back to the
Options menu. Press ESC again and select Yes to exit the program.

VI. SCSI SELECT

(Configuring SCSI)

SCSI Disk Utilities

The SCSI Disk Utilities option displays information on SCSI IDs 0 though 15, list­ing all devices on the bus including non-disk devices. When you select a device
from the list and press Enter key, another window appears giving you the option of
selecting one of two sub-utilities, Format Disk or Verify Media. These utilities are
used for hard disk drives only and will have no effect on other non-disk SCSI de­vices.

Format Disk - is a SCSI low-level formatting utility. In general, SCSI hard drive
have already been low-level formatted when you get them, so you generally should
not need to use this function.

Verify Media - scans the selected drive media for defects, notifies you of any found
and gives you the option of reassigning bad blocks so that data will not be written to
them. This is only necessary if you suspect that your SCSI disk drive has a problem.

ASUS P2L97-S User’s Manual 59

(This page was intentionally left blank)

60 ASUS P2L97-S User’s Manual

VII. ADAPTEC EZ-SCSI UTILITY

Welcome to Adaptec EZSCSIVI. ADAPTEC EZ-SCSI UTILITY 4.00e Adaptec
EZSCSI gives you what you need to use your SCSI devices most effectively with
Windows®95 and W indowsNT™. You can also use Adaptec EZSCSI on computers
running DOS, Windows®3.1x, or Windows for Workgroups3.1x.

Quick Start Instructions

First, install SCSI devices (see the hardware documentation for details). Then fol­low the instructions for your operating system software in one of the following sec­tions. We recommend that after you install Adaptec EZSCSI you run SCSITutor to
learn more about the features of SCSI.

Windows95 or WindowsNT

If you want to install Windows95 or WindowsNT on a new computer system, you
may not be able to access your SCSI CDROM drive at first. (Usually, you install
Windows95 and WindowsNT from a CDROM disc.) T o gain access to your CDROM
drive, follow the DOS Quick Start instructions on page 4. Then reboot your com­puter and follow these instructions:

(Intro/Quick Start)

VII. EZ-SCSI UTILITY

1 Install Windows95 or WindowsNT version 3.51 or above, and start it running

on your computer.

2 Insert the Adaptec EZSCSI Setup Diskette in your floppy disk drive.
3 Click the Start button and select Run.
4 Type a:\setup if you are using the A drive or b:\setup if you are using the B

drive. Then click OK.

5 Follow the instructions that appear on the screen.

Windows/Windows for Workgroups 3.1x

1 Install Windows3.1x or Windows for Workgroups3.1x and start it running on

your computer.

2 Insert the Adaptec EZSCSI Setup Diskette in your floppy disk drive.
3 Select File/Run from the Program Manager menu.
4 When the Run dialog box appears, type a:\setup if you are using the A drive or

b:\setup if you are using the B drive. Then click OK.

5 Follow the instructions that appear on the screen.

DOS

1 Install DOS6.x or above and start it running on your computer.
2 Insert the Adaptec EZSCSI Setup Diskette in your floppy disk drive.
3 At the DOS prompt, type a:\install (assuming your 3.5” floppy is A: drive).

Then press Enter.

4 Follow the instructions that appear on the screen.

ASUS P2L97-S User’s Manual 61

VII. ADAPTEC EZ-SCSI UTILITY

T roubleshooting Tips

SCSI Device Troubleshooting

Review this checklist if your newly-installed SCSI disk drives, CDROM drives, and
other devices do not seem to work properly:

• Be sure that termination is correctly set for all devices on the SCSI bus, as

VII. EZ-SCSI UTILITY

(Troubleshooting)

described in your host adapter documentation.

• Be sure there are no hardware conflicts such as devices in your computer try-

ing to use the same interrupts (IRQs) or DMA channels.

• Be sure the cables connecting the external and internal SCSI devices and the

host adapter are attached securely . Also be sure the pin-1 orientation is correct
for internal cables. See the host adapter documentation for more information.

• Be sure that each SCSI device connected to the host adapter has a unique SCSI ID.

• Be sure CD-ROM drives and other SCSI devices are attached to a power source

and are turned ON.

Windows95/WindowsNT Troubleshooting

What is a miniport driver, and how do I make sure that the miniport driver is
installed correctly?

Miniport drivers are a new kind of 32bit protect mode device driver used by Win­dows95 and WindowsNT to control host adapters and other kinds of devices. Win­dows95 and W indowsNT include a set of miniport drivers for various types of SCSI
host adapters. The host adapter miniport driver is automatically installed and con­figured during Windows95 and WindowsNT installation if your host adapter is al­ready installed. To make sure the driver is installed correctly in systems running
Windows95, open the Control Panel, double-click on System, and click the Device
Manager tab. Then double-click the SCSI Controllers icon; you should see the model
name of the SCSI host adapter(s) installed in your system.

What if there is no SCSI controllers icon under Device Manager, or the model
name of the SCSI chipset does not appear under Device Manager?

If the SCSI controllers icon or your host adapter’s model name do not appear , open
Control Panel and double-click the Add New Hardware icon. Let Windows search
for the host adapter by selecting Yes on the second screen of the Add New Hardware
Wizard.

If Windows does not detect the host adapter, run the Add New Hardware Wizard
again. This time, select No on the second screen of the wizard, then select SCSI
controllers on the next screen. Select the name of your host adapter when it appears.

62 ASUS P2L97-S User’s Manual

VII. ADAPTEC EZ-SCSI UTILITY

If the name of your SCSI chipset does not appear, you may be able to find its
miniport driver on the Windows95 CD-ROM. Follow these steps:

1 Place the W indows95 CD-ROM in your CDROM drive and run the Add New

Hardware wizard.

2 Select No on the second screen, and select SCSI controllers on the next screen.
3 Click on the Have Disk button, then click the Browse button.
4 Look in the \drivers\storage directory of the CDROM and select the name of

your SCSI host adapter if it appears.

What if a yellow exclamation point or a red X appears in Device Manager in
front of my host adapter?

This means there is some kind of resource problem. First, see if the names of any
host adapters appear that are not actually installed in your computer . If so, select the
name and click Remove. If a red X appears in front of your host adapter name,
remove all the host adapter references under SCSI Controllers and run Add New
Hardware, as described in the previous question/answer. If a yellow exclamation
point appears in front of your host adapter name, the resources that the driver uses
probably do not match the resources used by the hardware. Double-click the host
adapter name, then click on the Resource tab. Deselect the Use automatic settings
box and edit the resources (Interrupt Request, Direct Memory Access, etc.) so they
match those used by the host adapter . If the problem still remains, there is probably
a hardware resource conflict between the host adapter and other hardware in your
computer. You can fix this by changing the hardware resource settings. (See your
hardware documentation.)

(Troubleshooting)

VII. EZ-SCSI UTILITY

What do I need to do if I want to use another host adapter?

1 Open the Control Panel, double-click on System, and click the Device Man-

ager tab.

2 Double-click the SCSI Controllers icon, select the name of the old host adapter,

and click Remove.

3 Turn OFF the computer and physically remove the currently installed host

adapter.

4 Install the new host adapter according to the instructions in the hardware docu-

mentation.

5 Turn the computer ON. If the new host adapter supports Plug and Play, Win-

dows will install and configure it automatically . Otherwise, run Add New Hard­ware to make sure the new driver is loaded.

ASUS P2L97-S User’s Manual 63

VII. ADAPTEC EZ-SCSI UTILITY

If I am running under Windows95, do I need lines for the Adaptec real mode
ASPI drivers and mscdex in my config.sys and autoexec.bat files?

Usually, you do not need to use these real mode ASPI drivers, because the new
Windows miniport drivers support most SCSI host adapters and SCSI devices. How­ever, you need to load the drivers (including mscdex, if you have a CDROM drive)
if any of the following is true:

VII. EZ-SCSI UTILITY

(Troubleshooting)

• You are running in MSDOS mode

• Y ou are using a scanner or another SCSI device with config.sys- or autoexec.bat-

based drivers, such as HP’s sjiix.sys

• You have an older model SCSI-1 CDROM drive that Windows95 does not

support

• You are using a CD-Recorder drive (however, some newer models of CD-

Recorder drives can use the embedded Windows miniport drivers)

To install the Adaptec EZSCSI DOS drivers, click the Start button and select Re-
start the computer in MS-DOS mode. When the DOS prompt appears, follow the
Quick Start instructions for DOS.

My CDROM drive doesn’t work properly under Windows95.

Some older models of SCSI CDROM drives are not compatible with the embedded
Windows95 CDROM driver. You can add support for the CDROM drive by doing
the following:

1 Click the Start button and select Restart the computer in MS-DOS mode.
2 When the DOS prompt appears, follow the Quick Start instructions for DOS.
3 When you are finished running Adaptec EZSCSI for DOS, find the file named

cdtsd.vxd in the windows\system\iosubsys directory and rename it cdtsd.sav.

My CDROM drive shows up as more than one icon under My Computer.

The mapping between mscdex, which runs in real mode, and the W indows95 CDROM
driver does not match. You can correct this in one of two ways:

• Comment out the line that loads mscdex.exe in the autoexec.bat file.

• Change the /L switch on the line that loads mscdex.exe in the autoexec.bat file

so it assigns the CDROM drive the next highest logical drive letter after the
hard disk drives.

64 ASUS P2L97-S User’s Manual

VII. ADAPTEC EZ-SCSI UTILITY

Information for DOS/Windows 3.1x Users

The following information may be useful if you install Adaptec EZSCSI on a com­puter running DOS, Windows 3.1x, or Windows for Workgroups3.1x.

NOTE: The Windows95/WindowsNT Troubleshooting section on page 6 de­scribes a few situations when you may need to use the DOS/Windows3.1x driv­ers and ASPI managers under Windows95 or WindowsNT.

DOS and Windows3.1x Device Drivers

Device drivers are software programs that enable your computer to communicate
with SCSI devices such as hard disk drives, CDROM drives, and scanners. Each
kind of device requires a different device driver. Adaptec EZSCSI includes several
DOS/Windows3.1x device drivers that are copied to your hard disk during installa­tion. Adaptec EZSCSI adds command lines to your config.sys and autoexec.bat files
to load these device drivers if it finds these kinds of devices on your computer.

(DOS/Win Info.)

VII. EZ-SCSI UTILITY

To learn more about the Adaptec EZSCSI device drivers, including their command
line option information, see the online Adaptec EZSCSI Online Reference, a Win­dows Help application.

DOS and Windows3.1x ASPI Managers

ASPI (Advanced SCSI Programming Interface) managers are software programs
that enable the SCSI device drivers, your host adapter, and your SCSI devices to
communicate with each other. ASPI managers are written for a specific operating
system, such as DOS, and a specific family of Adaptec host adapters.

Adaptec EZSCSI includes several ASPI managers for DOS/Windows3.1x. When
you install Adaptec EZSCSI on these operating systems, it detects what kind of host
adapter is installed in your computer and automatically configures your system with
the correct ASPI manager. To learn more about these ASPI managers, including
their command line option information, see the Adaptec EZSCSI Online Reference,
a Windows Help application.

ASUS P2L97-S User’s Manual 65

VII. ADAPTEC EZ-SCSI UTILITY

DOS Formatting Utilities

Adaptec EZSCSI includes several DOS-based formatting utilities:

Low-level Formatter (scsifmt)

Use the DOS-based scsifmt utility for low-level formatting of SCSI hard disk drives,
removable media, Floptical® drives, and magneto-optical drives. You can also use

VII. EZ-SCSI UTILITY

it to scan a disk device for surface defects before you store data on it.

(Formatting)

Run scsifmt from the DOS prompt, not from the W indows MSDOS prompt. Before
you run it, be sure the disk devices you want to format are connected to the host
adapter and that they are powered. Then follow these steps:

1. Change to the directory where scsifmt.exe is located (usually c:\scsi), type
scsifmt at the DOS prompt, and press Enter.

NOTE: If you are formatting a SCSI disk device that supports more than
one LUN (for example, Iomega’ s Bernoulli dual multidrive) type scsifmt /
L at the command line.

2. When the first screen appears, read it and press Enter to continue. (Press F1 at
any time to view Help.) Information about your SCSI disk devices appears on
the screen.

3. Use the arrow keys to move the highlight bar to a disk device you want to
format or verify, then press Enter.

4. When the next screen appears, select either Format or Verify (to verify that the
disk is free of surface defects), then press Enter.

WARNING! Back up important data before you format the disk device!

A low-level format erases all data from the disk.

5. If you select Format, confirm that you want to format the disk, then wait while
the disk device is formatted. This may take a long time if the disk is large.

If you select Verify, you can press Esc at any time to stop the verification
process. (This does not damage the disk.) If the utility finds bad blocks on the
disk, it displays information about them. You can reassign the bad block(s) to
prevent data from being stored there.

6. Repeat steps 3, 4, and 5, as needed, to format or verify other disk devices.
When you are finished, press Esc to exit.

66 ASUS P2L97-S User’s Manual

VII. ADAPTEC EZ-SCSI UTILITY

Formatter and Partitioner (afdisk)

Use the DOS-based afdisk utility to partition and format SCSI hard disk drives,
Floptical drives, and magneto-optical drives. You can also use afdisk to remove
DOS and non-DOS partitions from a disk drive and to format removable media in
standard hard disk format, OS/2 floppy format, or DOS V (Japanese) format.

NOTE: Use afdisk only if the disk device is not controlled by the host adapter
BIOS—that is, if the host adapter does not have a BIOS or if its BIOS is not en­abled. If the disk device is controlled by the host adapter BIOS, use the DOS fdisk
utility to partition and format the disk device. (See the MSDOS documentation.)

Run afdisk from the DOS prompt only, not from the Windows MSDOS prompt.
Before you run it, be sure the disk devices you want to format and partition are
connected to the host adapter and that they are powered. Then follow these steps:

(Partitioning)

1. Change to the directory where afdisk.exe is located (usually c:\scsi), type afdisk
at the DOS prompt, and press Enter.

Information about your SCSI disk devices appears on the screen. (The number
that appears after Target is the device’s SCSI ID.)

2. Use the arrow keys to move the highlight bar to the disk device you want to
partition, then press Enter.

- If the selected disk device is controlled by the host adapter BIOS, you can
view information about it but you cannot partition it with afdisk (Use the DOS
fdisk and format utilities.)

- If the selected disk device is unpartitioned, you must partition it before you
can format it. To do this, follow the instructions on the screen. (Press F1 to see
an explanation of the partitioning options.)

Information about the selected disk device appears in the lower left of the
screen. Disks smaller than 1Gigabyte have 64 heads, 32 sectors per track, and
cylinders equal to the number of MBytes of available capacity. Disks larger
than 1Gigabyte have 255 heads, 63sectors per track, and one cylinder per
8MBytes of available capacity.

VII. EZ-SCSI UTILITY

ASUS P2L97-S User’s Manual 67

VII. ADAPTEC EZ-SCSI UTILITY

3. To create a new partition on the disk device, press Ins. A screen similar to this
appears:

Adaptec SCSI Disk Setup Program v3.33

Select SCSI Device to Partition

HA #0 - Target 0
HA #0 - Target 4

QUANTUM LP105S 910109405
IOMEGA BETA90

Type Start End Megs

VII. EZ-SCSI UTILITY

(Partitioning)

The Create a DOS Partition window suggests that you create one partition on
the disk device, equal to its entire capacity . If this is what you want to do, skip
to step5.

4. To change the size of the partition, use the arrow keys to select Start Cylinder
and End Cylinder, and type in the numbers you want. Partitions up to 2Gigabytes
are supported.

5. When the number of cylinders is what you want, press Esc. When the confir­mation prompt appears, select Yes and press Enter to create the partition.
To create more partitions on the same disk device, repeat steps 3, 4, and 5. As
you create partitions on the disk, they are added to the window at the upper
right of the screen, as shown here:

Logical Drive Info

head

64

sectors/track

32

cylinders

85

bytes/sector

512

megabytes

85
2AEEFh blocks

<Ins> Create, <Del> Delete, <F1> Help, <Esc> Exit

Create a DOS Partition

Start Cylinder:
End Cylinder:

0

84

Adaptec SCSI Disk Setup Program v3.33

Select SCSI Device to Partition

HA #0 - Target 0
HA #0 - Target 4

Logical Drive Info

head

64

sectors/track

32

cylinders

85

bytes/sector

512

megabytes

85
2AEEFh blocks

<Ins> Create, <Del> Delete, <F1> Help, <Esc> Exit

QUANTUM LP105S 910109405
IOMEGA BETA90

Type Start End Megs
DOS 0 84 85

6. Press Esc to return to the Select SCSI Device to Partition window. If you want
to partition a different disk device, select the device from the list and repeat the
earlier steps.

7. To quit afdisk, press Esc and select Yes to confirm that you want to quit.

68 ASUS P2L97-S User’s Manual