ASUS TX97-X User Manual

R TX97-X

Pentium® ATX Motherboard

USER’S MANUAL

USER’S NOTICE

No part of this manual, including the products and softwares 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.

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 board itself. Manual revisions are released for each board 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 RESPONSIBLITY OR LIABILITY FOR ANY ERRORS OR INACCURACIES THAT MAYAPPEAR IN THIS MANUAL, INCLUDING THE PRODUCTS AND SOFTWARES DESCRIBED IN IT.

Copyright © 1997 ASUSTeK COMPUTER INC. All Rights Reserved.

Product Name:	ASUS TX97-X
Manual Revision:	3.00
Release Date:	August 1997

2	ASUS TX97-X 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:	49-2102-445011
Fax:	49-2102-442066
Email:	[e-mail]

Technical Support

BBS: 49-2102-448690

Email: [e-mail]

Hotline: [phone]

ASUS TX97-X 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-X Motherboard ..................................	8
Introduction to ASUS TX97 Series of Motherboards ................	9
Parts of the ASUS TX97-X Motherboard ................................	11
III. INSTALLATION ........................................................................	12
ASUS TX97-X Motherboard Layout ............................................	12
Installation Steps ............................................................................	14
1. Jumpers ......................................................................................	14
Jumper Settings ..................................................................	15
Compatible Cyrix CPU Identification ................................	19
2. System Memory (DIMM) .........................................................	19
DIMM Memory Installation Procedures: ...........................	20
3. Central Processing Unit (CPU) .................................................	22
4. Expansion Cards .......................................................................	23
Expansion Card Installation Procedure: .............................	23
Assigning IRQs for Expansion Cards .................................	23
Assigning DMA Channels for ISA Cards ...........................	24
ISA Cards and Hardware Monitor ......................................	24
5. External Connectors ..................................................................	25
Power Connection Procedures .................................................	33
IV. BIOS SOFTWARE .....................................................................	34
Support Software ...........................................................................	34
Flash Memory Writer Utility ....................................................	34
Main Menu .........................................................................	35
Advanced Features Menu ...................................................	35
Managing and 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
Chipset Features Setup .............................................................	44
Details of Chipset Features Setup .......................................	44
Power Management Setup ........................................................	47
Details of Power Management Setup .................................	47

4	ASUS TX97-X User’s Manual

CONTENTS
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. SUPPORT SOFTWARE ..............................................................	56
ASUS TX97 Motherboard Series Support CD ..............................	56
LANDesk Client Manager (LDCM) ..............................................	56
Desktop Management Interface (DMI) ..........................................	58
Introducing the ASUS DMI Configuration Utility .............	58
System Requirements .........................................................	58
Using the ASUS DMI Configuration Utility ......................	59
VI. ASUS PCI SCSI Cards ..............................................................	61
Symbios SCSI BIOS and Drivers ..................................................	61
ASUS PCI-SC200 & PCI-SC860 SCSI Cards ..............................	61
Setting Up the ASUS PCI-SC200 & PCI-SC860 .....................	62
Setting the INT Assignment for the ASUS PCI-SC200 ...........	62
Terminator Requirements for SCSI Devices ............................	62
Terminator Settings for the ASUS PCI-SC860 ........................	63
Terminator Settings for the ASUS PCI-SC200 ........................	63
SCSI ID Numbers for SCSI Devices .......................................	64
SCSI ID Priority .......................................................................	64
16-bit Audio (Section included with optional onboard audio) .......	65
ASUS Installation CD ..............................................................	67
ASUS Audio Driver CD Contents ......................................	67
Audio Drivers Installation ................................................................	67
Win95 Audio Drivers .........................................................................	68
Win3.x Audio Drivers ........................................................................	69
Configuration Manager ............................................................	69
Creative PnP Configuration Manager (CTCM) .......................	69
Audio Software ........................................................................	71
Environment Variables .............................................................	75
SOUND Environment variable ...........................................	75
BLASTER Environment Variable ......................................	75
MIDI Environment Variable ...............................................	76
Maximum Recording Rates for the Audio Hardware .........	76

ASUS TX97-X 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-X 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)

Item Checklist

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

ASUS TX97-X motherboard

1 IDE ribbon cable

1 floppy ribbon cable

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)

•Readme files for descriptions and use of the files

•Technical Support Form

This user’s manual

Infrared module (optional)

ASUS PCI-SC200 Fast-SCSI or PCI-SC860 Ultra-Fast SCSI card (optional)

ASUS audio onboard and audio driver CD with online help (optional)

I. INTRODUCTION	(Manual / Checklist)

ASUS TX97-X User’s Manual

7

FEATURES .II (Features)

II. FEATURES

Features of the ASUS TX97-X Motherboard

The ASUS TX97-X is carefully designed for the demanding PC user who wants many features in a small package. This motherboard:

•Intel Chipset: Features Intel’s 430TX PCIset with I/O subsystems.

•Versatile Processor Support: Intel Pentium® 75-233MHz (P55C-MMX™ , P54C/ P54CS), IBM® /Cyrix® 6x86-PR166+ (Rev 2.7 or later), IBM® /Cyrix® 6x86MX™

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

•Versatile Memory Support: Is equipped with three DIMM sockets to support (8, 16, 32, 64, or 128MB) 168-pin SDRAM memory modules up to 256MB.

•Easy Installation: Is 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: Provides expansion for three 16-bit ISA cards, three 32-bit PCI cards, and 1 shared expansion for either a PCI or an ISA card.

•Super Multi-I/O: Provides two high-speed UART-compatible serial ports and one parallel port with EPP and ECP capabilities.

•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. Supports two drives of either 5.25-inch (360KB or 1.2MB) or 3.5-inch (720KB, 1.44MB, or 2.88MB) disk drives. 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 boot-up.

•Level 2 Cache: 512KB Pipelined Burst SRAM onboard.

•Optional IrDA: Supports and optional IrDA receiver/transmitter device.

•Symbios SCSI BIOS: Has onboard firmware to support optional ASUS SCSI controller cards.

•Optional Audio: Has optional onboard Creative Labs® Audio with 3D sound.

8	ASUS TX97-X User’s Manual

II. FEATURES

Introduction to ASUS TX97 Series of Motherboards

Performance

•SDRAM Optimized Performance -ASUS TX97 series of motherboards support the new generation memory - Synchronous Dynamic Random Access Memory (SDRAM) which increases the data transfer rate from 264MB/s max using EDO memory to 528MB/s max using SDRAM.

•Double the IDE Transfer Speed - ASUS TX97 series of motherboards with Intel 430TX PCIset improves IDE transfer rate using Bus Master UltraDMA/33 IDE which can handle data transfer up to 33MB/s. The best of all is that this new technology is compatible with existing ATA-2 IDE specs so there is no need to upgrade current hard drives or cables.

•Concurrent PCI - Concurrent PCI allows multiple PCI transfers from PCI master busses to memory to CPU.

•ACPI Ready - ACPI (Advanced Configuration and Power Interface) is also implemented on all ASUS 430TX series of motherboards. ACPI provide more Energy Saving Features for the future operating systems (OS) supporting OS Direct Power Management (OSPM) functionality. With these features implemented in the OS, PCs can be ready around the clock everyday, yet satisfy all the energy saving standards. To fully utilize the benefits of ACPI, an ACPIsupported OS such as in the next release of Windows 95 must be used.

•PC ’97 Compliant - Both the BIOS and hardware levels of ASUS TX97 series of motherboards meet PC ’97 compliancy. The new PC 97 requirements for systems and components are based on the following high-level goals: Support for Plug and Play compatibility and power management for configuring and managing all system components, and 32-bit device drivers and installation procedures for both Windows 95 and Windows NT.

II. FEATURES (TX97 Series)

ASUS TX97-X User’s Manual

9

FEATURES .II Series) (TX97

II.FEATURES

•Voltage Monitoring and Alert - System voltage levels are monitored to ensure stable current to critical motherboard components. Voltage specifications are more critical for future processors, so monitoring is necessary to ensure proper system configuration and management.

•System Resources Alert -Today’s operating systems such as Windows 95, Windows NT, and OS/2, require much more memory and hard drive space to present enormous user interfaces and run large applications. The system resource monitor will warn the user before the system resources are used up to prevent possible application crashes. Suggestions will give the user information on managing their limited resources more efficiently.

•Virus Write Protection -Normally, viruses can destroy data on storage media such as hard drivers, floppy diskettes, and MO. Some new-generation viruses will not only destroy data on storage media, but also clear BIOS data which is usually unprotected. ASUS TX97 series of motherboards were designed to cooperate with BIOS, chipset, and flash EPROM to disable write permission when the system’s initialization stage is completed upon boot-up.

•CPU Slow Down - When CPU fans or system fans are malfunctioning, the system will deactivate the CPU Clock line to decrease CPU utilization to the speed upon detection of system overheat. This will prevent CPU damage from system overheat. The CPU utilization will restore normal operations when temperature falls below a safe level.

•Auto Fan Off - The system fans will power off automatically even in sleep mode. This function reduces both energy consumption and system noise, and is a important feature to implement silent PC systems.

•Dual Function Power Button (requires ATX power supply) -The system can be in one of two states, one is Sleep mode and the other is the Soft-Off mode. Pushing the power button for less than 4 seconds places the system into Sleep mode. When the power button is pressed for more than 4 seconds, it enters the Soft-Off mode.

•Remote Ring On (requires ATX power supply) -This allows a computer to be turned on remotely through a modem. With this benefit on-hand, any user can access vital information from their computer from anywhere in the world!

•Message LED - Chassis LEDs now act as information providers. Through the way a particular LED illuminates, the user can determine the stage the computer is in. A simple glimpse provides useful information to the user.

10	ASUS TX97-X User’s Manual

II. FEATURES

Parts of the ASUS TX97-X Motherboard

2 DIMM

Sockets

T: PS/2 Mouse

B:PS/2 Keyboard

T:USB Port 1

B:USB Port 2

COM 1

T: Parallel Conn.

B: Serial Conn.

COM 2

Intel’s 430TX

PCIset

(Optional)

T:Joystick/Midi

B:Out/In/Mic

3 PCI Slots

Creative Labs

Audio (optional)

1 PCI/ISA shared Slot

CPU ZIF	CPU Thermal	512KB Pipelined
Socket 7	Sensor (optional)	Burst L2 Cache

3 ISA Slots

LM78 Hardware	Programmable
Monitor (optional)	Flash ROM

II. FEATURES (Motherboard Parts)

ASUS TX97-X User’s Manual

11

INSTALLATION .III Layout) (Motherboard

III. INSTALLATION

ASUS TX97-X Motherboard Layout

	PS/2	Top: Mouse
		Bottom: Keyboard

USB	Top: USB 1	FANPWR3	module)	module)	module)
	Bottom: USB 2
		Multi-I/O (En/Dis)	pin	pin	pin
	1	SIO
Port	COM		(64-bit, 168-	(64-bit, 168-	(64-bit, 168-
Parallel	COM 2		Socket 3	Socket 2	Socket 1
			DIMM	DIMM	DIMM

Port	Line	Out
Game/Midi	Mic Line	In In

Sony CD In

Creative® Modem

Connector

Row 5 4 3 2 1 0

PCI Slot 1

Board Power Input

CPU Voltage

for ATX Power Supply

VID0

VID1

VID2

VID3

CPU Fan

BUS Freq.

L2 Cache

CPU Thermal Sensor

BF0

Onboard512KB

(Hardware Monitor)

BF1

BF2

LM75

CPU ZIF Socket 7

Intel 430TX PCIset

Floppy Drives

Secondary IDE

Primary IDE

Creative®

Labs

Audio

Keyboard BIOS

BUS FREQ

FS0

PCI Slot 2			FS1
			FS2

VOLCTL	Wake on LAN	R

Volume Control

PCI Slot 3

AUDIO (Dis/En)

PCI Slot 4

ISA Slot 1

ISA Slot 2

ISA Slot 3

Intel PIIX4

PCIset

					(Test/Clear)	RTCLR
					RTC
	CR2032
					FANPWR1
	3 Volt
	Lithium Cell

Chasis open alarm lead

Hardware Monitor

LM78

Programmable

BIOS EEPROM

Infrared Con. (IrDA)

Panel Connections

ISA Slot 4

IDE LED

NOTE: The items in outline are optional and may not be present.

12	ASUS TX97-X User’s Manual

III. INSTALLATION

Jumpers

1)	RTCLR	p. 15	Real Time Clock RAM (Operation/Clear Data)
2)	AUDIO (optional)	p. 15	Onboard Audio (Disable/Enable)
3)	M/IO	p. 16 Multi-I/O Selection (Enable/Disable)
4)	FS0, FS1, FS2	p. 16	CPU External Clock (BUS) Frequency Selection
5)	BF0, BF1, BF2	p. 16	CPU:BUS Frequency Ratio
6)	VID0, 1, 2, 3	p. 18	CPU Voltage Regulator Output Selection

Expansion Slots

1)	System Memory	p. 19	System Memory Upgrade
2)	CPU ZIF Socket 7	p. 22	Central Processing Unit (CPU) Socket
3)	SLOT 1, 2, 3, 4	p. 23	16-bit ISA Bus Expansion Slots*
4)	PCI 1, 2, 3, 4	p. 23	32-bit PCI Bus Expansion Slots†

Connectors

1)	PS2KEYBOARD	p. 25	PS/2 Keyboard Connector (6-pin Female)
2)	PS2MOUSE	p. 25	PS/2 Mouse Connector (6-pin Female)
3)	PRINTER	p. 26	Parallel (Printer) Port Connector (25-pin Female)
4)	COM1, COM2	p. 26	Serial Port COM1 & COM2 (Two 9-pin Female)
5)	FLOPPY	p. 26	Floppy Drive Connector (34-pin Block)
6)	AUDIO (optional)	p. 27	Audio Port -Line Out, Line In, Mic (Three 1/8” Female)
7)	GAME (optional)	p. 27	Joystick/Midi Connector (15-pin Female)
8)	USB	p. 27	Universal Serial BUS Ports 1 & 2 (Two 4-pin Female)
9)	Primary / Second IDE	p. 28	Primary / Secondary IDE Connector (40-pin Blocks)
10)	IDELED	p. 28	IDE LED Activity Light
11)	FANPWR1, 2, 3	p. 29	1 Chassis, 2 CPU, 3 Power Supply Fan Power Lead (3-pin Block)
12)	CHASSIS	p. 29	Chassis Open Alarm Lead (4-1pin Block)
13)	IR	p. 30	Infrared Port Module Connector
14)	ATXPWR	p. 30	ATX Motherboard Power Connector (20-pin Block)
15)	VOLCTL (optional)	p. 31	Digital Volume Level Control (Up/Down)
16)	WOL	p. 31	Wake on LAN (3 pins) (RESERVED)
17)	MSG LED (PANEL)	p. 32	System Message LED (2 pins)
18)	SMI (PANEL)	p. 32	SMI Switch Lead (2 pins)
19)	PWR SW (PANEL)	p. 32	ATX Power & Soft-Off Switch Lead (2 pins)
20)	RESET (PANEL)	p. 32 Reset Switch Lead (2 pins)
21)	PWR LED (PANEL)	p. 32	System Power LED Lead (3 pins)
22)	KEYLOCK (PANEL)	p. 32	Keyboard Lock Switch Lead (2 pins)
23)	SPEAKER (PANEL)	p. 32	Speaker Output 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.

III. INSTALLATION (Map of Board)

ASUS TX97-X User’s Manual

13

INSTALLATION .III (Jumpers)

III. INSTALLATION

Installation Steps

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

1.Set Jumpers on the Motherboard

2.Install System Memory

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. 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 moth-

Pin 1

Pin 1

erboards 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 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 jump-

ers 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.

1.Unplug your computer when working on the inside.

2.Use a grounded wrist strap before handling computer components. If you do not have one, touch both of your hands to a safely grounded object or to a metal object, such as the power supply case.

3.Hold components by the edges and try not to touch the IC chips, leads or connectors, or other components.

4.Place components on a grounded antistatic pad or on the bag that came with the component whenever the components are separated from the system.

14	ASUS TX97-X 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 RTC data: (1) Turn off 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 pins 1&2. WARNING: You must unplug the power cord to your power supply to ensure 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	[1-2]			(Default)
Clear Data	[2-3]			(momentarily)

RTCLR	RTCLR
Battery Test
Operation (Default)	Clear Data

RTC RAM (Operation / Clear Data)

2.Onboard Audio Selection (AUDIO) (with optional onboard Audio)

This jumper allows you to Disable the onboard audio chipset inorder to use your own audio card. Otherwise, leave on default of Enabled.

Onboard Audio	AUDIO
Enabled	[2-3] (Default)
Disabled	[1-2]
	AUDIO	AUDIO
	1	1
	2	2
	3	3
	Disable	Enable
		(Default)

Onboard Audio (Disable / Enable)

INSTALLATION	(Jumpers)
III.

ASUS TX97-X User’s Manual

15

INSTALLATION .III (Jumpers)

III.INSTALLATION

3.Onboard Multi-I/O Selection (M/IO)

You can selectively disable each onboard Multi-I/O item (floppy, serial, parallel, and IrDA) through Chipset Features Setup of BIOS SOFTWARE or disable all Multi-I/O items at once with the following jumper in order to use your own Multi-I/O card.

Multi-I/O M/IO

Enable	[1-2] (Default)
Disable	[2-3]

									M/IO			M/IO
											1	1
											2			2
											3			3
									Enable (Default)			Disabled

Multi I/O Setting (Enable / Disable)

4.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).

5.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.

FS2 FS1 FS0

FS2 FS1 FS0

FS2 FS1 FS0

FS2 FS1 FS0

FS2 FS1 FS0

1

1

1

1

1

2	2	2	2	2
3	3	3	3	3
50MHz	55MHz	60MHz	66MHz	75MHz

CPU External Clock (BUS) Frequency Selection

BF2 BF1 BF0

BF2 BF1 BF0

BF2 BF1 BF0

BF2 BF1 BF0

BF2 BF1 BF0

BF2 BF1 BF0

1

1

1

1

1

1

		2	2	2	2	2	2
Complete Names:		3	3	3	3	3	3
		1.5x(3/2)	2.0x(2/1)	2.5x(5/2)	3.0x(3/1)	----	----
Intel Pentium P54C	P54C/K5
Pentium P55C-MMX	P55C/K6/MX	3.5x(7/2)	2.0x(2/1)	2.5x(5/2)	3.0x(3/1)	----	----
AMD K5, K6	IBM/Cyrix 6x86	3.0x(3/1)	2.0x(2/1)	1.0x(1/1)	----	----	----
IBM/Cyrix 6x86(L) (M1)	IBM/Cyrix 6x86L	3.0x(3/1)	2.0x(2/1)	2.0x(2/1)	----	----	----
IBM/Cyrix 6x86MX(M2) AMD-K6 (.25 )		----	----	----	----	4.0x(4/1)	4.5x(9/2)
		CPU : BUS Frequency Ratio

16	ASUS TX97-X User’s Manual

III. INSTALLATION

WARNING! Frequencies above 66MHz exceed the specifications for the onboard Intel Chipset and are not guaranteed to be stable.

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

CPU Model	Freq.
Intel Pentium	233MHz
Intel Pentium	200MHz
Intel Pentium	166MHz
Intel Pentium	150MHz
Intel Pentium	133MHz
Intel Pentium	120MHz
Intel Pentium	100MHz
Intel Pentium	90MHz
Intel Pentium	75MHz
AMD-K6-PR233	233MHz
AMD-K6-PR200	200MHz
AMD-K6-PR166	166MHz
AMD-K5-PR133	100MHz
AMD-K5-PR120	90MHz
AMD-K5-PR100	100MHz
AMD-K5-PR90	90MHz
AMD-K5-PR75	75MHz
IBM/Cyrix 6x86MX-PR233	200MHz
IBM/Cyrix 6x86MX-PR200	166MHz
IBM/Cyrix 6x86MX-PR166	150MHz
*IBM/Cyrix 6x86-PR166+	133MHz

(BUS Freq.)

(Freq. Ratio)

Ratio

BUS Freq. FS2

FS1

FS0

BF2

BF1

BF0

3.5x

66MHz

[2-3]

[2-3]

[1-2]

[

----]

[1-2] [1-2]

3.0x

66MHz

[2-3]

[2-3]

[1-2]

[----

]

[2-3] [1-2]

2.5x

66MHz

[2-3]

[2-3]

[1-2]

[----

]

[2-3] [2-3]

2.5x

60MHz

[2-3]

[2-3]

[2-3]

[----

]

[2-3] [2-3]

2.0x

66MHz

[2-3]

[2-3]

[1-2]

[----

]

[1-2] [2-3]

2.0x

60MHz

[2-3]

[2-3]

[2-3]

[----

]

[1-2] [2-3]

1.5x

66MHz

[2-3]

[2-3]

[1-2]

[----

]

[1-2] [1-2]

1.5x

60MHz

[2-3]

[2-3]

[2-3]

[----

]

[1-2] [1-2]

1.5x

50MHz

[2-3]

[1-2]

[2-3]

[----

]

[1-2] [1-2]

3.5x

66MHz

[2-3]

[2-3]

[1-2]

[----

]

[1-2] [1-2]

3.0x

66MHz

[2-3]

[2-3]

[1-2]

[----

]

[2-3] [1-2]

2.5x

66MHz

[2-3]

[2-3]

[1-2]

[----

]

[2-3] [2-3]

1.5x

66MHz

[2-3]

[2-3]

[1-2]

[----

]

[1-2] [1-2]

1.5x

60MHz

[2-3]

[2-3]

[2-3]

[----

]

[1-2] [1-2]

1.5x

66MHz

[2-3]

[2-3]

[1-2]

[----

]

[1-2] [1-2]

1.5x

60MHz

[2-3]

[2-3]

[2-3]

[----

]

[1-2] [1-2]

1.5x

50MHz

[2-3]

[1-2]

[2-3]

[----

]

[1-2] [1-2]

3.0x

66MHz

[2-3]

[2-3]

[1-2]

[----

]

[2-3] [1-2]

2.5x

66MHz

[2-3]

[2-3]

[1-2]

[----

]

[2-3] [2-3]

2.5x

60MHz

[2-3]

[2-3]

[2-3]

[----

]

[2-3] [2-3]

2.0x

66MHz

[2-3]

[2-3]

[1-2]

[----

]

[1-2]

[2-3]

*NOTE: The only IBM or Cyrix 6x86 (M1) Rev 2.7 or later is supported on this motherboard (see next page). Bootup screen will show 6x86-P166+ with the Cyrix PR166+ installed on this motherboard.

INSTALLATION	(Jumpers)
III.

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INSTALLATION .III (Jumpers)

III. INSTALLATION

Compatible Cyrix CPU Identification

The only Cyrix CPU that is supported on this motherboard is labeled Cyrix 6x86 PR166+ but must be Revision 2.7 or later. Look on the underside of the CPU for the serial number. The number should read G8DC6620A or later.

5.Voltage Regulator Output Selection (VID0, 1, 2, 3)

These jumpers set the voltage supplied to the CPU. VID1 for 3.4V(STD) is ignored, therefore, the jumper setting for 2.8V(Dual) may work for both 3.4V(STD) and 2.8V(Dual).

Pentium MMX (P55C) Intel Pentium (P54C)	AMD-K6	AMD-K5	IBM/Cyrix 6x86(MX)	IBM/Cyrix 6x86(M1)
(150MHz-233MHz) (75MHz-200MHz)	(PR166 and faster)	(PR75-PR133)	(PR166 and faster)	(PR166 and faster)

WARNING! Because CPU designs change rapidly, the following chart is only intended as a simple quideline and is not intended to be true for your CPU. Look for the CPU voltage included with your CPU and follow the Voltage setting diagramed below the chart.

Manufacturer	CPU Type	Single Plane	Dual Plane	VID3		VID2	VID1	VID0
Intel/AMD/IBM/Cyrix	P54C/CS/K5/M1	3.5V(VRE)	----	[----	]	[2-3]	[----]	[1-2]
AMD/IBM/Cyrix	K6-166,200/MX	----	2.9V(Dual)	[----	]	[2-3]	[2-3]	[1-2]
Intel/AMD	P54C/CS/K5	3.4V(STD)	----	[----	]	[2-3]	[2-3]	[2-3]
Intel	P55C	----	2.8V(Dual)	[----	]	[2-3]	[2-3]	[2-3]
AMD	K6-PR233	----	3.2V(Dual)	[----	]	[1-2]	[2-3]	[2-3]
AMD (.25micron)	K6-233,266,300	----	2.1V(Dual)	[----	]	[----]	[2-3]	[1-2]

VID3

VID2

VID1

VID0

VID3

VID2

VID1

VID0

VID3

VID2

VID1

VID0

1	1	1
2	2	2
3	3	3

1.8 Volts	1.9 Volts	2.1 Volts
1	1	1
2	2	2
3	3	3
2.7 Volts	2.8 Volts	2.9 Volts

		1	1	1
	Voltage Regulator Output Selection	2	2	2
		3	3	3

VID3	VID2	VID1	VID0
			1
			2
			3
2.5 Volts

3.2 Volts 3.4 V * 3.5 Volts

*3.4V VID1 may be [----] or [2-3]

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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 256MB. One side (with memory chips) of the DIMM module takes up one Row on the motherboard.

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

Install memory in any combination as follows:

DIMM	Type	168-pin DIMM Memory Modules		Total Memory
Socket 1	SDRAM	8MB, 16MB, 32MB	x1
(Rows 0&1)	SDRAM	64MB, 128MB - but
		(Socket 3 must be empty)
	EDO	8, 16, 32, 64, 128MB
Socket 2	SDRAM	8MB, 16MB, 32MB	x1
(Rows 2&3)	SDRAM	64MB, 128MB - but
		(Socket 3 must be empty)
	EDO	8, 16, 32, 64, 128MB
Socket 3	SDRAM	8MB, 16MB, 32MB - but
(Rows 4&5)		Socket 1 or 2 must not have	x1
		64MB or 128MB SDRAM
	EDO	8, 16, 32, 64, 128MB
	Total System Memory (Max 256MB)		=

NOTE:

•Maximum memory size is 256MB total for this motherboard.

•Socket 3 will not support 64MB or 128MB DIMMs with 64Mbit SDRAM cells.

•If Socket 1 and/or Socket 2 has 64MB or 128MB DIMM’s with 64Mbit SDRAM cells, Socket 3 must be empty.

III. INSTALLATION (System Memory)

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

INSTALLATION .III Memory) (System

							88 Pins	60 Pins 20 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		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.

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III. INSTALLATION

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III. INSTALLATION (System Memory)

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INSTALLATION .III Processor) (System

III.INSTALLATION

3.Central Processing Unit (CPU)

The motherboard provides a 321-pin ZIF Socket 7 that is backwards compatible with ZIF Socket 5 processors. The CPU that came with the motherboard should have a fan attached to it to prevent overheating. If this is not the case then purchase a fan before you turn on your system. Apply thermal jelly to the CPU top and then install the fan onto the CPU.

WARNING! Without a fan circulating air on the CPU and heat sinks, the CPU and/or heat sinks can overheat and cause damage to both the CPU and the motherboard. (See “CPU Cooling Fan Connector” at the end of this section.)

To install a CPU, first turn off your system and remove its cover. Locate the ZIF socket and open it by first pulling the lever sideways away from the socket then upwards to a 90-degree right angle. Insert the CPU with the correct orientation as shown. Use the notched corner of the CPU as your guide. The white dot should point towards the end the of the lever. Notice that there is a blank area where one hole is missing from that corner of the square array of pin holes and a “1” printed on the motherboard next to that corner. Because the CPU has a corner pin for three of the four corners, the CPU will only fit in the one orientation as shown. The picture is for reference only; you should have a CPU fan that will cover the face of the CPU. With the added weight of the CPU fan, no force is required to insert the CPU. Once completely inserted, hold down on the fan and close the socket’s lever.

IMPORTANT: You must set jumpers for “CPU to BUS Frequency Ratio” and jumpers for “BUS Frequency Selection” depending on the CPU that you install.

																Lever Lock			Blank		Notch
																				1		1

ZIF Socket 7 with Pentium MMX Processor

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III.INSTALLATION

4.Expansion Cards

WARNING! Make sure that you 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.

Expansion Card Installation Procedure:

1.Read your expansion card documentation on any hardware and software settings that may be required to setup your specific card.

2.Set any necessary jumpers on your expansion card.

3.Remove your computer system’s cover.

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

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.Edit the BIOS settings if necessary.

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

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 an standard design there are 16 IRQs available but most of them are already in use by parts of the system which leaves 6 free for expansion cards.

Both ISA and PCI expansion cards may need to use IRQs. System IRQs are available to cards installed in the ISA expansion bus first, and any remaining IRQs are then used by 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’s Diagnostic (MSD.EXE) utility included in the Windows directory to see a map of your used and free IRQs. For Windows 95 users, the “Control Panel” icon in “My Computer,” contains a “System” icon which gives you a “Device Manager” tab. Double clicking on a specific device gives you the “Resources” tab, which shows the Interrupt number and address. Make sure that no two devices use the same IRQs or your computer will experience problems when those two devices are in use at the same time.

III. INSTALLATION (Expansion Cards)

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INSTALLATION .III Cards) (Expansion

III. INSTALLATION

To simplify this process this motherboard has complied 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 of the BIOS setup utility can be used to indicate which IRQs are being used by Legacy cards. For older Legacy cards that does not work with the BIOS, you can 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 has a card in it that requires an IRQ. To install a PCI card, you need to set something called the INT (interrupt) assignment. Since all the PCI slots on this motherboard use an INTA #, be sure that the jumpers on your PCI cards are set 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.

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