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

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

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

•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.

•Adobe and Acrobat are registered trademarks of Adobe Systems Incorporated.

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

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

SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FURNISHED FOR INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT ANY TIME WITHOUT NOTICE, AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY ASUS. ASUS ASSUMES NO RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR INACCURACIES THAT MAYAPPEAR 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:	49-2102-445011
Fax:	49-2102-442066
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 Vital 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.

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

•Adaptec SCSI drivers and utilities

•Readme files for descriptions and use of the files

•Technical Support Form

This user’s manual

Infrared module (optional)

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

I. INTRODUCTION	(Manual / Checklist)

ASUS P2L97-S User’s Manual

7

FEATURES .II (Specifications)

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® II (233MHz–333MHz) processor.

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

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

•Easy Installation: Equipped with BIOS that supports auto detection of hard drives, PS/2 mouse, and Plug and Play devices to make setup of hard drives, expansion cards, and other devices virtually automatic.

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

•Super Multi-I/O: Provides two high-speed UART compatible serial ports and one parallel port with EPP and ECP capabilities. UART2 can also be directed from COM2 to the Infrared Module for wireless connections.

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

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

•Multi-Cache: Supports a Pentium® 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, component level interconnect targeted at 3D graphical display applications.

•Intelligence: Supports Fan Status Monitoring and Alarm, Temperature Monitoring and Alert, Voltage Monitoring and Alert, System Resources Alert, and Virus Write Protection through the optional onboard LM78 Hardware Monitor and Intel® LANDesk Client Manager (LDCM) software.

8	ASUS P2L97-S User’s Manual

II. FEATURES

The ASUS P2L97-S Motherboard

Adaptec’s 7880

Ultra-Fast/Wide

Intel 440LX AGPset Narrow/Wide SCSI Connectors

SCSI Chipset

PS/2 Mouse (Top)

PS/2 K’board (Bottom)

USB Port 1 (Top)

USB Port 2 (Bottom)

COM 1

(Bottom)

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

Programmable

2MB Flash ROM

1 ISA/PCI

Shared Slot

1 ISA Slot

Intel PIIX4 PCIset

II. FEATURES (Motherboard Parts)

ASUS P2L97-S User’s Manual

9

INSTALLATION .III Layout) (Board

III. INSTALLATION

Layout of the ASUS P2L97-S Motherboard

		Mouse (top port)	ATX Power Connector			34 68
PS/2
		Keyboard (bottom port)
							SCSI
		PWR_FAN
							Pin-Wide
		CPU_FAN
USB	USB 1 (top port)
	USB 2 (bottom port)
COM 1							68
	DrivesDiskFloppy	CPUContactEdgeSingleSlot	168bit,(643Socket(DIMMpin module)	168bit,(642Socket(DIMMpin module)	168bit,(641Socket(DIMMpin module)	35	1	IDESecondary	IDEPrimary
ParallelPort						SCSIConnector
							Adaptec
							7880 SCSI
			Intel			Pin	Chipset
			440LX
COM 2			AGPset			50-
		R_CPU				SCSI
						BIOS Power
						(CR2032 3V
						Lithium Cell)
Multi-I/O			Accelerated Graphics Port						CLRTC
						FS0
						FS1
						FS2
			PCI Slot 1	BUS FREQ

Hardware

R

Monitor

CHA_FAN

LM78

PCI Slot 2

FREQ BF0

EEPROMFlash2MB

BIOS)(Programable

RATIO BF1

BF2

BF3

WOL_CON

PCI Slot 3

Intel PIIX4

R_MB1

PCIset

PCI Slot 4

Thermal

Sensor

ISA Slot 1

HDLED IrDA

Panel Connect.

ISA Slot 2

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 (PANEL)		p. 32	System Power LED (3 pins)
19) KEYLOCK (PANEL)		p. 32	Keyboard Lock Switch Lead (2 pins)
20)	SPEAKER (PANEL)	p. 32 Speaker Connector (4 pins)

*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.

III. INSTALLATION (Board Layout)

ASUS P2L97-S User’s Manual

11

INSTALLATION .III (Jumpers)

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 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

PIN 1

		PIN 1
for our motherboards is always on top	or on the left		when holding the

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 graphi-

cally 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.

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]
P2L97-S SCSI Setting

SCSI			SCSI
1	2	3	1	2	3
Enable			Disable

INSTALLATION	(Jumpers)
III.

ASUS P2L97-S User’s Manual

13

INSTALLATION .III (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.

FS2 FS1 FS0

FS2 FS1 FS0

FS2 FS1 FS0

FS2 FS1 FS0

	1	1	1	1
	2	2	2	2
	3	3	3	3
60MHz	66MHz	75MHz		83MHz

CPU Bus Frequency

					BF3 BF2 BF1 BF0	BF3 BF2 BF1 BF0	BF3 BF2 BF1 BF0	BF3 BF2 BF1 BF0	BF3 BF2 BF1 BF0

1

1

1

1

		2		2	2	2
	P2L97-S CPU Settings	3		3	3	3
		2.0x(2/1)	3.5x(7/2)	4.0x(4/1)	4.5x(9/2)	5.0x(5/1)

CPU Core:Bus Frequency Multiple

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:

CPU Model

Freq.

(BUS Freq.)

(Freq.

Ratio)

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.

Short the solder points to clear CMOS

CLRTC

P2L97-S Real Time Clock RAM (CLRTC)

INSTALLATION	(Jumpers)
III.

ASUS P2L97-S User’s Manual

15

(This page was intentionally left blank)

INSTALLATION .III (Jumpers)

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. Two sockets are available for 3.3Volt (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.

To utilize the chipset’s Error Checking and Correction (ECC) feature, you must use a DIMM module with 9 chips per side (standard 8 chips/side + 1 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)

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.

III. INSTALLATION (System Memory)

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.

INSTALLATION .III Memory) (System

20 Pins 60 Pins

88 Pins

Lock

(FRONT)

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		Voltage Key Position

RFU	Unbuffered	5.0V	Reserved
Buffered			3.3V

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.

Lock Holes

Captive Nut

(1)

(3)

(2)

Attach Mount Bridges (Items 1,2) Pentium II Retention Mechanism (Item 3)

(8)

Top Bar (4)

(5)

Pin

Posts

(6)

Base (7)

Larger Fin should

be on the bottom. Heatsink bottom Groove for the Support Top Bar

Heatsink Support Base/Top Bar (Items 4-7) Pentium II Processor Heatsink (Item 8)

Intel Pentium II Processor in a SEC Cartridge	CPU (Item 9)
(233-333MHz 512KB/256KB/0KB L2 Cache)

INSTALLATION	(CPU)
III.

ASUS P2L97-S User’s Manual

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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)

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

Captive nut

20	ASUS P2L97-S User’s Manual

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)			(9)	Push each end of the clamps until they lock
Push Clamp			(8)
			Lock			Lock

(9)

Push Clamp

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

SEC Cartridge with Heatsink (Side View)

SEC Cartridge with Heatsink (Top View)

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

(3)

INSTALLATION	(CPU)
III.

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