Asus TX97-N User Manual

R

TX97-N

Pentium® NLX 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.

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

sions are released for each product design represented by the digit before and after the period
of the manual revision number. Manual updates are represented by the third digit in the manual
revision number.

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

SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FUR­NISHED FOR INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT
ANY TIME WITHOUT NOTICE, AND SHOULD NOT BE CONSTRUED AS A COM­MITMENT BY ASUS. ASUS ASSUMES NO RESPONSIBILITY OR LIABILITY FOR
ANY ERRORS OR INACCURACIES THAT MA Y APPEAR IN THIS MANUAL, INCLUD­ING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT.

Copyright © 1998 ASUSTeK COMPUTER INC. All Rights Reserved.

Product Name: ASUS TX97-N
Manual Revision: 1.04
Release Date: January 1998

2

ASUS TX97-N User’s Manual

ASUS CONTACT INFORMATION

ASUSTeK COMPUTER INC.

Marketing Info

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

Technical Support

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

ASUS COMPUTER INTERNATIONAL

Marketing Info

Address: 721 Charcot Avenue, San Jose, CA 95131, USA
Telephone: [phone]
Fax: [phone]
Email: [e-mail]

Technical Support

BBS: [phone]
Email: [e-mail]
WWW: www.asus.com

ASUS COMPUTER GmbH

Marketing Info

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 TX97-N User’s Manual 3

CONTENTS

I. INTRODUCTION...........................................................................7

How this manual is organized..........................................................7

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

II. FEATURES ....................................................................................8

Features of the ASUS TX97-N Motherboard ..................................8

Parts of the ASUS TX97-N Motherboard ..................................9

Riser Card Front .........................................................................9

Riser Card Back .........................................................................9

III. INSTALLATION ........................................................................10

ASUS TX97-N Motherboard Layout ............................................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

4. Expansion Cards .......................................................................20

Expansion Card Installation Procedure: .............................20

Assigning IRQs for Expansion Cards.................................20

Assigning DMA Channels for ISA Cards...........................21

ISA Cards and Hardware Monitor......................................21

5. External Connectors..................................................................22

Front Panel Descriptions ..........................................................27

Power Connection Procedures .................................................31

Main Menu .........................................................................32

Support Software ...........................................................................32

Flash Memory Writer Utility....................................................32

Advanced Features Menu ...................................................33

Managing and Updating Your Motherboard’s BIOS................34

6. BIOS Setup ...............................................................................35

Load Defaults .....................................................................36

Standard CMOS Setup .............................................................36

Details of Standard CMOS Setup:......................................37

BIOS Features Setup ................................................................39

Details of BIOS Features Setup..........................................39

Chipset Features Setup .............................................................41

Details of Chipset Features Setup.......................................41

Power Management Setup........................................................44

Details of Power Management Setup .................................44

4

ASUS TX97-N User’s Manual

CONTENTS

PNP and PCI Setup ..................................................................46

Details of PNP and PCI Setup ............................................46

Load BIOS Defaults .................................................................48

Load Setup Defaults .................................................................48

Supervisor Password and User Password ................................49

IDE HDD Auto Detection ........................................................50

Save and Exit Setup .................................................................51

Exit Without Saving .................................................................51

V. SUPPORT SOFTWARE..............................................................52

Desktop Management Interface (DMI)..........................................52

Introducing the ASUS DMI Configuration Utility .............52

System Requirements .........................................................52

Using the ASUS DMI Configuration Utility ......................53

Notes...................................................................................53

VI. ASUS PCI SCSI Cards ..............................................................55

Symbios SCSI BIOS and Drivers ..................................................55

ASUS PCI-SC200 & PCI-SC860 SCSI Cards ..............................55

Setting Up the ASUS PCI-SC200 & PCI-SC860.....................56

Setting the INT Assignment for the ASUS PCI-SC200 ...........56

Terminator Requirements for SCSI Devices ............................56

Terminator Settings for the ASUS PCI-SC860 ........................57

Terminator Settings for the ASUS PCI-SC200 ........................57

SCSI ID Numbers for SCSI Devices .......................................58

SCSI ID Priority.......................................................................58

VII. ASUS LAN Card .......................................................................59

ASUS PCI-L101 Fast Ethernet Card .............................................59

Features ....................................................................................60

Drivers Supported ....................................................................60

Question and Answer ...............................................................60

ASUS TX97-N 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 TX97-N 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 concerning this product
III. Installation: Instructions on setting up the motherboard
IV. BIOS Software: Instructions on setting up the BIOS software
V. Support Software: Information on the included support software
VI. ASUS SCSI Cards: Installation of ASUS SCSI cards (optional)
VII. ASUS L101 Card: Installation of the ASUS LAN card (optional)

Item Checklist

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

(1) ASUS motherboard

I. INTRODUCTION

(Manual / Checklist)

(1) IDE ribbon cable for master and slave drives
(1) Floppy ribbon cable for one 3.5inch floppy drive
(1) Support drivers and utilities
(1) Motherboard User’s Manual
(1) System housing User’s Manual

(1) NLX Form-factor system housing, riser card, and power supply
DIMM memory module

3.5inch Floppy Drive
Slim CD-ROM and cable
ASUS PCI-SC200 Fast-SCSI or PCI-SC860 Ultra-Fast SCSI card (optional)
ASUS PCI-L101 Wake-on-LAN 10/100 Ethernet Card (optional)

ASUS TX97-N User’s Manual 7

II. FEATURES

Features of the ASUS TX97-N Motherboard

The ASUS TX97-N motherboard is carefully designed for the demanding PC user
who wants many features in a small package, namely:

• Mini NLX: Features ASUS’ custom designed mini-NLX form factor.

• Intel Chipset: Features Intel’s 430TX PCIset.

• Onboard VGA: Has ATI 3D Rage VGA onboard with 1MB upgradable to 2MB.

• Onboard Audio: Has Yamaha 16-bit audio onboard.

II. FEATURES

(Features)

• LCD Support: Supports a LCD panel as an alternative to a bulky monitor.

• Slim CD-ROM: Supports a notebook-sized slim CD-ROM drive.

• Wake on LAN: Supports wake on LAN activity with special network cards.

• V ersatile Processor Support: Intel Pentium

P54CS), IBM
(PR166 & faster), AMD-K5™ (PR75–PR133), AMD-K6™ (PR166 & faster).

• Versatile Memory Support: Is equipped with two DIMM sockets to support

8-128MB 168-pin 3.3Volt SDRAM/EDO memory modules up to 256MB.

• ISA & PCI Expansion Slots: Provides one 16-bit ISA slot & two 32-bit PCI slots

• Super Multi-I/O: Provides an onboard I/O processor for two high-speed UAR T -

compatible serial ports and one parallel port with EPP and ECP capabilities.

• Level 2 Cache: Comes with onboard 512K Pipelined Burst SRAM.

• Onboard IrDA: Has an infrared port on the riser card for wireless interface.

• 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: Has onboard Ultra DMA/33 Bus Master

IDE controller with two connectors (one for CD-ROM only). Supports two IDE
devices up to 8.4GB using one channel. Supports Bus Master UltraDMA/33 IDE,
PIO Modes 3 & 4, and Bus Master IDE DMA Mode 2. Includes integrated key­board controller. Supports two of either 5.25-inch (360KB, 1.2KB) or 3.5-inch
disk drives (720KB, 1.44MB, 2.88MB). Supports Japanese “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 bootup.

®

/Cyrix® 6x86-PR166+ (Rev 2.7 or later), IBM®/Cyrix® 6x86MX

®

75–233MHz (P55C-MMX™, P54C/

™

• TV Out: Supports optional onboard TV out funtion using ImpacTV chipset.

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

onboard firmware.

• Performance: Provides 528MB/s data transfer rate using SDRAM, 33MB/s IDE

transfer rate using Bus Master UltraDMA/33 IDE, concurrent PCI allows multiple
PCI transfers

• Compliancy: Is ACPI ready for advanced power management features and PC’97

for greater support.

• Easy Installation: Incorporates BIOS that supports autodetection of hard disk

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

• Riser Card: Provides NLX power, primary IDE, floppy drive, LAN wake up

connector, 2 PCI slots, 1 ISA slot, 2 USB ports, and IrDA.

8 ASUS TX97-N User’s Manual

II. FEATURES

Parts of the ASUS TX97-N Motherboard

T: PS/2 Mouse
B: PS/2 Keyboard

LCD Panel
Connector

ATI 3D Rage
Chipset

Intel CPU
Compatible
ZIF Socket 7

COM 1

T: Parallel Conn.
B: Serial Conn.

COM 2

TV Out S-Video
Conn.(optional)

TV Out RCA
Conn.(optional)

VGA
Connector

Joystick/MIDI
Connector

II. FEATURES

(Motherboard Parts)

VGA Memory
Upgrade Sockets

512KB Pipelined
Burst L2 Cache

Intel PIIX4
PCIset

2 DIMM
Sockets

Multi-I/O
Intel 430TX

PCIset
Programmable

Flash ROM

2 PCI Slots
1 ISA Slot

NLX Slot

Riser Card Front

Floppy Drive
Connector

Riser Card Back

IrDA Port
2 USB Ports

ASUS TX97-N User’s Manual 9

Primary IDE
Connector

NLX Power
Connector

III. INSTALLATION

ASUS TX97-N Motherboard Layout

(Motherboard Layout)

III. INSTALLATION

COM 1

BF2

BF1

BF0

Freq. Ratio

Parallel Port

COM 2

VID0

VID1

VID2

CPU Voltage

CPU ZIF Socket 7

CPU_FAN

512KB Pipelined
Burst L2 Cache

PS/2

MOUSE (TOP PORT)
KEYBOARD (BOTTOM)

512KB onboard
VGA Memory

512KB onboard
VGA Memory

SVHS

TV Out

(TV Out is optional)

RCA

TV Out

LCD Monitor Connector

ATI 3D
Rage
VGA

512KB VGA

Memory Socket

512KB VGA

Memory Socket

VGA

Joystick/MIDI

Audio Conn.

ATI Multimedia Connector

Intel
PIIX4

R

PCIset

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

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

Intel
430TX
PCIset

FS2

FS1

FS0

32

Row

10

PCI Slot 2

PCI Slot 1
ISA Slot 1

NLX Ext.

Riser Card Front

Infrared

Riser Slot

BUS Freq.

LAN LED

Primary IDE

Multi
I/O Chip

Flash EEPROM

(Programable BIOS)

RTCLR

Wake on LAN

Riser Slot

CMOS Power

CR2032

3 Volt Cell

Riser Slot

Floppy Drive Conn.

Panel Conn.

CDROM Connector

MIC Con.

USB1&2

Riser Card Back

NLX Power

10 ASUS TX97-N User’s Manual

III. INSTALLATION

Jumpers

1) RTCLR p. 13 Real Time Clock RAM (Operation/Clear Data)

2) BF0, BF1, BF2 p. 14 CPU:BUS Frequency Ratio

3) FS0, FS1, FS2 p. 14 CPU External Clock (BUS) Frequency Selection

4) VID0, 1, 2 p. 16 CPU Voltage Regulator Output Selection

Expansion Slots

1) DIMM Sockets p. 17 168-Pin DIMM Memory Expansion Sockets

2) CPU ZIF Socket 7 p. 19 Central Processing Unit (CPU) Socket

3) SLOT 1 p. 20 16-bit ISA Bus Expansion Slots

4) PCI 1, 2 p. 20 32-bit PCI Bus Expansion Slots

Connectors

1) PS2KEYBOARD p. 22 PS/2 Keyboard Connector (6-pin Female)

2) PS2MOUSE p. 22 PS/2 Mouse Connector (6-pin Female)

3) GAME_PORT p. 22 Joystick or MIDI Connector (15-pin Female)

4) PRINTER p. 23 Parallel (Printer) Port Connector (25-pin Female)

5) COM1, COM2 p. 23 Serial Port COM1 and COM2 (Two 9-pin Male)

6) VGA p. 23 VGA Compatible Connector (15-pin Female)

7) TV Out (optional) p. 23 Television Connector (RCA & 4-pin Female S-Video)

8) USB p. 24 Universal Serial BUS Ports 1 & 2 (Two 4-pin Female)

9) IR p. 24 Infrared Module

10) POWER p. 24 NLX Motherboard Power Connector (20-pin Block)

11) IDE1 p. 25 Primary IDE Connector (40-pin Block)

12) FLOPPY p. 25 Floppy Drive Connector (34-pin Block)

13. LAN_LED, WOL_ p. 25 LAN Activity Connectors (2-pin & 3-pin)

14) PAN_CON p. 26 Front Panel Display LEDs and Switches (16-1 pin)

15) MIC_CON p. 26 Front Panel Microphone Jack Connector (2 pin)

16) AMC p. 28 ATI Multimedia Connector (40-3 pin Block)

(Map of Board)

III. INSTALLATION

17) AUDIO p. 28 Back Panel Audio Connectors (10-1 pin Block)

18) CPU_FAN p. 28 CPU Fan Power (3-pin Block)

19) VGA Memory p. 29 Onboard VGA Memory Expansion Sockets (40 pins)

20) CDROM p. 29 CD-ROM Drive Connector (50-1 pins)

ASUS TX97-N User’s Manual 11

III. INSTALLATION

Installation Steps

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

1. Set Jumpers on the Motherboard

2. Install System Memory

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” for locations of jumpers.

III. INSTALLATION

(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. A “1” is written
besides pin 1 on jumpers with three pins. The jumpers will also be shown graphi­cally such as
with two pins will be shown as
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, baseboards and components, such as SCSI

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

to connect pins 1&2 and to connect pins 2&3. Jumpers

for Short (On) and for Open (Off). For

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 TX97-N User’s Manual

III. INSTALLATION

Jumper Settings

1. Real Time Clock (RTC) RAM (RTCLR)

The CMOS RAM is powered by the onboard button cell battery. To clear the
R TC data: (1) T urn of f your computer and remove the AC power , (2) Move this
jumper to “Clear Data,” (3) Move the jumper back to “Operation,” (4) Turn on
your computer, (5) Hold down <Delete> during bootup and enter BIOS setup to
re-enter user preferences.

Battery Test Jumper (RTCLR)

You can test the battery’s current by removing this jumper and attaching a cur­rent meter to the “Operation” pins.

WARNING! You must unplug the power cord to your power supply to en-

sure that there is no power to your motherboard. The CMOS RAM con­taining BIOS setup information may be cleared by this action. You should
enter BIOS to “Load Setup Defaults” and re-enter any user information
after removing and reapplying this jumper.

RTC RAM RTCLR

Operation [2-3] (Default)
Clear Data [1-2] (momentarily)

RTCLR

3
2

R

Real Time Clock (RTC) RAM

1

Operation (Default)

Battery Test

(Jumpers)

III. INSTALLATION

RTCLR

3
2
1

Clear Data

ASUS TX97-N User’s Manual 13

III. INSTALLATION

2. CPU to BUS Frequency Ratio (BF0, BF1, BF2)

These jumpers set the frequency ratio between the Internal frequency of the CPU
and the External frequency (called the BUS Clock) within the CPU. These must
be set together with the above jumpers CPU External (BUS) Frequency Selection.

3. CPU External (BUS) Frequency Selection (FS0, FS1, FS2)

These jumpers tell the clock generator what frequency to send to the CPU. These
allow the selection of the CPU’ s External frequency (or BUS Clock). The BUS Clock
times the BUS Ratio equals the CPU’ s Internal frequency (the advertised CPU speed).

BF2

BF1

BF0

BF2

BF1

BF0

BF2

BF1

BF0

BF2

BF1

BF0

BF2

BF1

BF0

BF2

BF1

BF0

III. INSTALLATION

(Jumpers)

R

Match the table’s Ratio column
to these CPU types:

2.0x(2/1)

2.0x(2/1)

2.0x(2/1)

2.0x(2/1)

2.0x(2/1)

FS1

FS2

66MHz

3
2

1

FS0

2.5x(5/2)

2.5x(5/2)

1.0x(1/1)

2.0x(2/1)

2.5x(5/2)

FS2

3
2

1

68MHz

FS1

3
2

1

FS0

3
2

1

3.0x(3/1)

3.0x(3/1)

3.0x(3/1)

3
2

1

CPU A
CPU B
CPU C
CPU D
CPU E

CPU : BUS Frequency Ratio

FS2

50MHz

CPU External Clock (BUS) Frequency Selection

FS1

FS0

1.5x(3/2)

3.5x(7/2)

3.0x(3/1)

3.0x(3/1)

3.5x(7/2)

FS2

3
2

1

60MHz

FS1

FS0

3
2

1

----

----

FS1

FS2

75MHz

3
2

1

FS0

----

----

----

----

4.0X(4/1)

3
2

1

3
2

1

(4.5X)(9/2)

----

----

----

----

3
2

1

WARNING! Frequencies above 66MHz exceed the specifications for the

onboard Intel Chipset and are not guaranteed to be stable.

14 ASUS TX97-N User’s Manual

III. INSTALLATION

Set the jumpers by the Internal speed of the Intel, AMD, IBM, or Cyrix CPU as follows:

(BUS Freq.) (Freq. Ratio)

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

Intel Pentium P54C 166MHz A-2.5x 66MHz [1-2] [1-2] [1-2] [1-2] [2-3] [2-3]
Intel Pentium P54C 150MHz A-2.5x 60MHz [1-2] [1-2] [2-3] [1-2] [2-3] [2-3]
Intel Pentium P54C 133MHz A-2.0x 66MHz [1-2] [1-2] [1-2] [1-2] [1-2] [2-3]
Intel Pentium P54C 120MHz A-2.0x 60MHz [1-2] [1-2] [2-3] [1-2] [1-2] [2-3]
Intel Pentium P54C 100MHz A-1.5x 66MHz [1-2] [1-2] [1-2] [1-2] [1-2] [1-2]
Intel Pentium P54C 90MHz A-1.5x 60MHz [1-2] [1-2] [2-3] [1-2] [1-2] [1-2]
Intel Pentium P54C 75MHz A-1.5x 50MHz [2-3] [2-3] [2-3] [1-2] [1-2] [1-2]

AMD-K5-PR133 100MHz A-1.5x 66MHz [1-2] [1-2] [1-2] [1-2] [1-2] [1-2]
AMD-K5-PR120 90MHz A-1.5x 60MHz [1-2] [1-2] [2-3] [1-2] [1-2] [1-2]
AMD-K5-PR100 100MHz A-1.5x 66MHz [1-2] [1-2] [1-2] [1-2] [1-2] [1-2]
AMD-K5-PR90 90MHz A-1.5x 60MHz [1-2] [1-2] [2-3] [1-2] [1-2] [1-2]
AMD-K5-PR75 75MHz A-1.5x 50MHz [2-3] [2-3] [2-3] [1-2] [1-2] [1-2]

Intel Pentium P55C 233MHz B-3.5x 66MHz [1-2] [1-2] [1-2] [1-2] [1-2] [1-2]
Intel Pentium P55C 200MHz B-3.0x 66MHz [1-2] [1-2] [1-2] [1-2] [2-3] [1-2]
Intel Pentium P55C 166MHz B-2.5x 66MHz [1-2] [1-2] [1-2] [1-2] [2-3] [2-3]

IBM/Cyrix 6x86MX-PR233 200MHz B-3.0x 66MHz [1-2] [1-2] [1-2] [1-2] [2-3] [1-2]
IBM/Cyrix 6x86MX-PR200 166MHz B-2.5x 66MHz [1-2] [1-2] [1-2] [1-2] [2-3] [2-3]
IBM/Cyrix 6x86MX-PR166 150MHz B-2.5x 60MHz [1-2] [1-2] [2-3] [1-2] [2-3] [2-3]

*IBM/Cyrix 6x86-PR166+ 133MHz C-2.0x 66MHz [1-2] [1-2] [1-2] [1-2] [1-2] [2-3]
*IBM/Cyrix 6x86L-PR166+ 133MHz D-2.0x 66MHz [1-2] [1-2] [1-2] [1-2] [1-2] [2-3]

AMD-K6-PR233 233MHz E-3.5x 66MHz [1-2] [1-2] [1-2] [1-2] [1-2] [1-2]
AMD-K6-PR200 200MHz E-3.0x 66MHz [1-2] [1-2] [1-2] [1-2] [2-3] [1-2]
AMD-K6-PR166 166MHz E-2.5x 66MHz [1-2] [1-2] [1-2] [1-2] [2-3] [2-3]

(Jumpers)

III. INSTALLATION

*NOTE: The only IBM/Cyrix 6x86(L) (or M1) that is sup-

ported on this motherboard is rev 2.7 or later. Look on the un­derside of the CPU for the serial number. The number should
read G8DC6620A or later.

ASUS TX97-N User’s Manual 15

III. INSTALLATION

5. Voltage Regulator Output Selection (VID0, 1, 2)

These jumpers set the voltage supplied to the CPU.

III. INSTALLATION

(Jumpers)

Pentium MMX (P55C)
(150MHz-233MHz)

Intel Pentium (P54C)
(75MHz-200MHz)

AMD-K6
(PR166 and faster)

AMD-K5
(PR75-PR133)

IBM/Cyrix 6x86(MX)
(PR166 and faster)

IBM/Cyrix 6x86(M1)
(PR166 and faster)

WARNING! Because CPU designs change rapidly, the table below is only in-

tended as a simple guideline and thus may not be true for your CPU. Always
refer to the CPU documentation for your CPU’s voltage and then set the appro­priate VID jumpers according to the illustration below.

Manufacturer CPU Type Single Plane Dual Plane VID0 VID1 VID2

Intel P54C/P54CS 3.5V(VRE) ---- [1-2] [1-2] [2-3]
AMD K5 3.5V(VRE) ---- [1-2] [1-2] [2-3]
IBM/Cyrix 6x86 3.5V(VRE) ---- [1-2] [1-2] [2-3]
Intel P54C/P54CS 3.4V(STD) ---- [2-3] [2-3] [2-3]
AMD K5 3.4V(STD) ---- [2-3] [2-3] [2-3]
Intel P55C-MMX ---- 2.8V(Dual) [2-3] [2-3] [2-3]
AMD (.35micron) K6-PR233 ---- 3.2V(Dual) [2-3] [2-3] [1-2]
AMD (.35micron) K6-166,200 ---- 2.9V(Dual) [1-2] [2-3] [2-3]
IBM/Cyrix 6x86MX ---- 2.9V(Dual) [1-2] [2-3] [2-3]
AMD (.25micron) K6-233,266,300 ---- 2.1V(Dual) [1-2] [2-3] [2-3]

VID2

3
2
1

VID0

3
2
1

2.8/3.4 Volts

R

Voltage Regulator Output Selection

VID1

VID0

2.1/2.9 Volts

Note: Auto-voltage detection regulators allow some

jumper settings to be the same for two voltages.

VID1

VID2

16 ASUS TX97-N User’s Manual

VID1

VID0

3.2 Volts

VID2

3
2
1

VID1

VID2

VID0

3.5 Volts

3
2
1

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 512MB. 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 0 (Rows 0&1) SDRAM/EDO 8, 16, 32, 64, 128MB x1
Socket 1 (Rows 2&3) SDRAM/EDO 8, 16, 32, 64, 128MB x1

Total System Memory (Max 256MB) =

ASUS DIMM Module 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 TX97-N User’s Manual 17

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 different pint contact on each side and therefore have a higher pin density.

III. INSTALLATION

(System Memory)

III. INSTALLATION

20 Pins

60 Pins

R

88 Pins

Lock

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

Voltage Key Position

5.0V

Reserved

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 TX97-N User’s Manual