Asus TX97-XV User manual

R
TX97-XV
Pentium®ATX Motherboard
USER'S MANUAL
IMPORTANT: This preliminary copy is for review purposes only and is
subject to errors and ongoing modifications.

ASUS TX97-XV User’s Manual
2
USER'S NOTICE
Product Name: ASUS TX97-XV
Manual Revision: 1.13
Release Date: April 1997
No part of this product, including the product and software may be reproduced,
transmitted, transcribed, stored in a retrieval system, or translated into any lan-
guageinanyformbyanymeanswithouttheexpresswrittenpermissionofASUSTeK
COMPUTER INC. (hereinafter referred to as ASUS) except documentation kept
by the purchaser for backup purposes.
Specifications are subject to change without notice. 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 shallASUS be liable for any loss or profits, loss of
business, loss of use or data, interruption of business, or for indirect, special, inci-
dental, or consequential damages of any kind, even if ASUS has been advised of
the possibility of such damages arising from any defect or error in this manual or
product. ASUS may revise this manual from time to time without notice.
Products mentioned in this manual are mentioned for identification purposes only.
Product names appearing in this manual may or may not be registered trademarks
or copyrights of their respective companies.
• Intel, LanDesk, and Pentium are registered trademarks of Intel Corporation.
• 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 andAcrobat 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 you may visit ASUS' home page at:
http://www.asus.com.tw/ or contact ASUS from the following page.
© Copyright 1997 ASUSTeK COMPUTER INC. All rights reserved.

ASUS TX97-XV User’s Manual 3
ASUS CONTACT INFORMATION
ASUSTeK COMPUTER INC.
Marketing Info:
Address: 150 Li-Te Road, Peitou, Taipei, Taiwan, ROC
Telephone: [phone]
Fax: [phone]
Email: [email protected]
Technical Support:
Fax: [phone]
BBS: 886-2-896-4667
Email: [email protected]
WWW: http://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: [email protected]
Technical Support:
BBS: 1-408-474-0555
Email: [email protected]
ASUS COMPUTER GmbH
Marketing Info:
Address: Harkort Str. 25, 40880 Ratingen, BRD, Germany
Telephone: [phone]
Fax: [phone]
Email: [email protected]
Technical Support:
BBS: 49-2102-448690
Email: [email protected]

ASUS TX97-XV User’s Manual
4
CONTENTS
I. INTRODUCTION...........................................................................7
How this manual is organized ..................................................................... 7
Item Checklist ............................................................................................. 7
II. FEATURES ....................................................................................8
Features of the ASUS TX97-XV Motherboard........................................... 8
Introduction to ASUS TX97 Series of motherboards ........................... 9
Parts of the ASUS TX97-XV Motherboard ........................................ 11
III. INSTALLATION ........................................................................12
Map of the ASUS Motherboard ................................................................ 12
Installation Steps ....................................................................................... 14
1. Jumpers ................................................................................................. 14
Jumper Settings ............................................................................ 15
Compatible Cyrix CPU Identification .......................................... 17
2. System Memory (SIMM & DIMM) .................................................... 19
SIMM Memory Installation.......................................................... 20
DIMM Memory Installation ......................................................... 21
3. Central Processing Unit (CPU) ............................................................ 23
4. Expansion Cards................................................................................... 24
Expansion Card Installation Procedure: ....................................... 24
Assigning IRQs for Expansion Cards........................................... 24
Assigning DMA Channels for ISA Cards..................................... 25
5. External Connectors ............................................................................. 26
Power Connection Procedures ............................................................ 33
IV. BIOS SOFTWARE .....................................................................34
Support Software....................................................................................... 34
Flash Memory Writer Utility..................................................................... 34
Main Menu ................................................................................... 34
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:................................................ 39
BIOS Features Setup........................................................................... 42
Details of BIOS Features Setup.................................................... 42
Chipset Features Setup........................................................................ 45
Details of Chipset Features Setup................................................. 45
Power Management Setup .................................................................. 48
Details of Power Management Setup ........................................... 48
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 and Exit Setup ............................................................................ 55
Exit Without Saving ............................................................................ 55
V. SUPPORT SOFTWARE..............................................................56
ASUS TX97 Motherboard Series Support CD ......................................... 56
LANDesk Client Manager (LDCM) ......................................................... 56

ASUS TX97-XV User’s Manual 5
CONTENTS
Desktop Management Interface (DMI) ..................................................... 58
Introducing the ASUS DMI Configuration Utility ....................... 58
System Requirements ................................................................... 58
Using the ASUS DMI Configuration Utility ................................ 59
Notes:............................................................................................ 59
R
ATI VGA Series....................................................................65
VI. Microsoft Windows 95 ................................................................67
Video Driver Installation........................................................................... 67
Software MPEG & Video Player ........................................................ 71
Windows 95 Display Settings ................................................................... 72
VII. Microsoft Windows 3.x..............................................................73
Video Driver Installation........................................................................... 73
Software MPEG & Video Player .............................................................. 75
ATI Desktop Control Panel................................................................. 76
ATI Desktop Features ......................................................................... 76
FlexDesk+ ................................................................................................. 77
FlexDesk+ Basic Settings ................................................................... 77
FlexDesk+ Advanced Settings ............................................................ 79
DPMS (for Windows) ............................................................................... 80
Timer Settings ..................................................................................... 80
Buttons ................................................................................................ 80
DeskScape ................................................................................................. 81
DeskScape Functions .......................................................................... 81
Buttons ................................................................................................ 82
WinSwitch ................................................................................................. 82
Screen Adjustment .............................................................................. 83
DPMS Parameters ............................................................................... 85
VIII. Windows Video Player.............................................................86
ATI Player and control panel (Win3.1x and Win95) .......................... 86
Features ............................................................................................... 86
Video Acceleration Performance ........................................................ 87
Playing Video Clips ............................................................................ 87
Sizing Windows .................................................................................. 87
IX. Microsoft Windows NT...............................................................88
Video Driver Installation........................................................................... 88
X. IBM OS/2 & OS/2 Warp ..............................................................92
Video Driver Installation........................................................................... 92
XI. Other Video Drivers....................................................................93
AutoCAD Video Driver Installation ......................................................... 93
Microstation Video Driver Installation ..................................................... 94
Select System Information (optional) ....................................................... 95
Quick Setup (optional) .............................................................................. 95
VDIF Files (optional).......................................................................... 96
Advanced Setup (optional)........................................................................ 97
A. Troubleshooting ............................................................................99
Diagnostics ................................................................................................ 99
Troubleshooting ........................................................................................ 99
System Lockup.......................................................................................... 99

ASUS TX97-XV User’s Manual
6
FCC & DOC COMPLIANCE
FederalCommunications 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 installa-
tion. This equipment generates, uses and can radiate radio frequency energy and, if
not installed and used in accordance with manufacturer's instructions, may cause
harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the inter-
ference by one or more of the following measures:
• Re-orient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment to an outlet on a circuit different from that to which
the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
WARNING: Theuseofshieldedcablesfor connection of the monitor to the graphics
card is required to assure compliance with FCC regulations. Changes or modifica-
tions to this unit not expressly approved by the party responsible for compliance
could void the user's authority to operate this equipment.
CanadianDepartment of CommunicationsStatement
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 Cana-
dian Department of Communications.

ASUS TX97-XV User’s Manual 7
I. INTRODUCTION
I. INTRODUCTION
(Manual / Checklist)
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 Setup: BIOS software setup information.
V. Support Software: Installation of software drivers and utilities.
VI. (reserved) SCSI Firmware not available
VII. ASUS I-A16C: Installation of an optional 16-bit Audio card
VIII. Windows 95: Audio Software Manual (with ASUS I-A16C bundle)
IX. DOS/Win3.1x: Audio Software Manual (with ASUS I-A16C bundle)
Item Checklist
Please check that your package is complete. If you discover damaged or missing
items, please contact your retailer.
√The ASUS TX97-XV motherboard
√1 serial port ribbon cable attached to a mounting bracket
√1 IDE ribbon cable
√1 floppy ribbon cable
√ASUS TX97 Series Support CD:
• LANDesk Client Manager (LDCM) Software
• Flash Memory Writer utility to update the FLASH BIOS
• Desktop Management Interface (DMI) utility
• Audio drivers and utilities (included withASUS I-A16C CD bundle only)
• VGA Drivers and utilities
• Readme files for descriptions and use of the files
• Technical Support Form
√This user's manual
Optional ASUS I-A16C Audio Card

8 ASUS TX97-XV User’s Manual
Features of the ASUS TX97-XV Motherboard
The ASUS TX97-XV is carefully designed for the demanding PC user who wants
many many features in a small package. This motherboard:
•Intel Chipset: Features Intel's 430TX PCIset with I/O subsystems.
•VGAOnboard: Features ATI’s VGA Chipset with VGA out connector.
•Multi-Processor/Multi-Speed Support: Intel Pentium
®
75-233MHz (P55C-
MMX
™
, P54C/P54CS), Cyrix
®
P166+ (Rev 2.7 & later), AMD-K5
™
(PR75-
133MHz), AMD-K6
™
(PR200-233MHz).
•Versatile Memory Support: Is equipped with two DIMM sockets to support
8-128MB 168-pin 3.3Volt SDRAM/EDO memory modules up to 256MB. Is
also equipped with four SIMM sockets to support 4-64MB 72-pin Fast Page
Mode (FPM) or Extended Data Out (EDO) memory modules up to 256MB.
SIMMs and DIMMs cannot be used at the same time.
•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 and PCI Expansion Slots: Provides three 16-bit ISA slots, and four 32-bit
PCI slots.
•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. Two floppy drives
of either 5.25" or 3.5" (1.44MB or 2.88MB) are also supported without an exter-
nal card. Supports Japanese standard "Floppy 3 mode" (3.5" 1.2MB).
• 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 Ultra DMA/33
Bus Master IDE controller with two connectors that supports four IDE devices
in two channels up to 33MB/sec IDE transfers and supports Enhanced IDE de-
vices. This controller supports PIO Modes 3 and 4 and Bus Master IDE DMA
Mode 2. BIOS now supports IDE CD-ROM or SCSI bootup.
•Level 2 Cache: 512KB Pipelined Burst SRAM onboard.
•SCSI BIOS: (not supported on motherboards with VGA)
•Optional IrDA Connector: This motherboard supports an optional infrared
port module for wireless interface.
II. FEATURES
(Features)
II. FEATURES

ASUS TX97-XV User’s Manual 9
II. FEATURES
II. FEATURES
(TX97 Series)
Introduction to ASUS TX97 Series of motherboards
Performance:
• SDRAM Optimized Performance - ASUS TX97 series of motherboards sup-
port 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.
• 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.
•ConcurrentPCI-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 imple-
mented 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 ACPI-
supported OS such as in the next release of Windows 95 must be used.
• PC ’97 Compliant - Both the BIOS and hardware levels ofASUS 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 pro-
cedures for both Windows 95 and Windows NT.
Intelligence:
• Fan Status Monitoring and Alarm - To prevent system overheat and system
damage, the CPU fan and system fans are monitored for RPM and failure. Each
fan can be set for its normal RPM range and alarm thresholds.
•Temperature Monitoring andAlert - To prevent system overheat and system
damage, there is a heat sensor under the CPU and on the motherboard itself to
monitor CPU and system temperature to make sure the system is operating at a
safe heat level to avoid any failures triggered by extremely high temperature.

10 ASUS TX97-XV User’s Manual
II. FEATURES
(TX97 Series)
II. FEATURES
•Voltage Monitoring andAlert - 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.
• SystemResourcesAlert-Today’s operating systems such as Windows 95, Win-
dows NT, and OS/2, require much more memory and hard drive space to present
enormous user interfaces and run large applications. The system resource moni-
tor will warn the user before the system resources are used up to prevent pos-
sible application crashes. Suggestions will give the user information on manag-
ing 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 co-
operate 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 tem-
perature 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 (requiresATX 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 (requiresATX powersupply) - 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.

ASUS TX97-XV User’s Manual 11
Parts of the ASUS TX97-XV Motherboard
II. FEATURES
II. FEATURES
(Parts of Board)
1MBVGA Memory
(upgradable to 2MB)
512KB Pipelined
Burst L2 Cache
CPU ZIF
Socket 7
4 PCI Slots
3ISA Slots
2 DIMM Sockets
T: USB Port 1
B: USB Port 2
Programmable
Flash ROM
T: PS/2 Mouse
B: PS/2 Keyboard
T: Parallel Conn.
B: Serial / VGA
COM 1
VGAConnector
Hardware Monitor
CPU Thermal
Sensor Intel 430TX
PCIset
ATI VGA

12 ASUS TX97-XV User’s Manual
III. INSTALLATION
Map of the ASUS Motherboard
Panel Connections
Board Power Input
for ATX Power Supply
Floppy Drives
PCI Slot 1
PCI Slot 2
PCI Slot 4
Secondary IDE Primary IDE
PCI Slot 3
256KB/512KB Onboard L2 Cache
CR2032
3 Volt
Lithium Cell
FS0
FS1
FS2
BUS FREQ
Keyboard
BIOS/
Multi-I/O
Flash ROM for BIOS
Intel
430TX
PCIset
Intel
PIIX4
PCIset
Chassis open
CPU_FAN
ISA Slot 3
ISA Slot 2
ISA Slot 1
ATI
VGA
CHASSIS FAN
T: USB 1
B: USB 2
USB
PS/2
T: Mouse
B: Keyboard
PWR_FAN
BF1
BF0
FREQ. RATIO
AMC Connector
COM 2
RTC (Clear/Test)
RTCLR
Hardware Monitor
CPU ZIF Socket 7
Heat
Sensor
DIMM Socket 2 (64-bit, 168-pin module)
DIMM Socket 1 (64-bit, 168-pin module)
SIMM Socket 1 (32-bit, 72-pin module)
SIMM Socket 2 (32-bit, 72-pin module)
SIMM Socket 3 (32-bit, 72-pin module)
SIMM Socket 4 (32-bit, 72-pin module)
32 10
Row
01 01 23 23
Row
512KB DRAM
512KB DRAM
512KB DRAM
Upgrade Socket
512KB DRAM
Upgrade Socket
COM 1
Parallel Port
VGA
IDE LED
CPU Voltage
VID2
VID1
VID0
VGA IRQ (Dis/En)
VIRQ
Infrared Con.
(Map of Board)
III. INSTALLATION

ASUS TX97-XV User’s Manual 13
III. INSTALLATION
Jumpers
1)RTCLR p. 15Real Time Clock RAM (Operation/Clear Data)
2)FS0, FS1, FS2 p. 16CPU External Clock (BUS) Frequency Selection
3)BF0, BF1 p. 16CPU:BUS Frequency Ratio
4)VID0, VID1, VID2 p. 17CPU Voltage Regulator Output Selection
5)VIRQ p. 18VGA Interrupt (Disable / Enable)
Expansion Slots
1)System Memory p. 19System Memory Upgrade
2)SIMM Sockets p. 2072-Pin SIMM Memory Expansion Sockets
3)DIMM Sockets p. 21168-Pin DIMM Memory Expansion Sockets
4) CPU ZIF Socket 7 p. 23Central Processing Unit (CPU) Socket
5)ISASlots p. 2416-bit ISA Bus Expansion Slots
6)PCI Slots p. 2432-bit PCI Bus Expansion Slots
Connectors
1)PS2KEYBOARD p. 26PS/2 Keyboard Connector (6-pin Female)
2)PS2MOUSE p. 26PS/2 Mouse Connector (6-pin Female)
3)PRINTER p. 27Parallel (Printer) Port Connector (25-pin Female)
4)COM1 p. 27Serial Port COM1 (Two9-pin Female)
5)USB p. 27Universal Serial BUS Ports 1 & 2 (Two 4-pin Female)
6)VGA p. 28VGA Connector (15-pin Female)
7)FLOPPY p. 28Floppy Drive Connector (34-pin Block)
8)FANPWR p. 29Power Supply Fan (3-pin) & CPU Fan Lead (4-pin )
9)CHASSIS p. 29Chassis Open Alarm Lead (3-pin Block)
10)Primary / Second IDE p. 30Primary / Secondary IDE Connector (40-pin Blocks)
11)IDELED p. 30IDE LEDActivity Light
12)MSG LED (PANEL) p. 30System Message LED (2-pins)
13)SMI (PANEL) p. 31SMI Switch Lead (2-pins)
14)PWR SW (CON1) p. 31ATX Power & Soft-Off Switch Lead (2-pins)
15)RESET(PANEL) p. 31Reset Switch Lead (2-pins)
16)KEYLOCK (PANEL) p. 31Keyboard Lock Switch Lead (5-pins)
17)SPEAKER (PANEL) p. 31Speaker Output Connector (4-pins)
18)IR p. 32Infrared Port Module Connector
19)ATXPWR p. 32Motherboard Power Connector (20-pin Block)
(Map of Board)
III. INSTALLATION

14 ASUS TX97-XV User’s Manual
III. INSTALLATION
(Jumpers)
III. INSTALLATION
Installation Steps
Before using your computer, you must complete the following steps:
1. Set Jumpers on the Motherboard
2. Install DRAM 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 "Map of the Motherboard" on page 4 for loca-
tions 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 respec-
tively. Pin 1 for our motherboards is always on top
Pin 1
or on the left
Pin 1
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 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 to-
gether. To connect the pins, simply place a plastic jumper cap over the two pins as
diagramed.
WARNING: Computer motheboards and components contain very delicate
Integrated Circuit (IC) chips. To protect the motherboard and other compo-
nents against damage from static electricity, you should follow some precau-
tions whenever you work on your computer.
1. Unplug your computer when working on the inside.
2. Hold components by the edges and try not to touch the IC chips, leads, or
circuitry.
3. Use a grounded wrist strap before handling computer 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.

ASUS TX97-XV User’s Manual 15
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, (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 cur-
rent meter to pins 2&3. 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 [2-3] (Default)
Clear Data [1-2] (momentarily)
RTC RAM (Operation / Clear Data)
Operation (Default)
RTCLR
Clear Data
RTCLR
Battery Test
III. INSTALLATION
(Jumpers)

16 ASUS TX97-XV User’s Manual
III. INSTALLATION
(Jumpers)
III. INSTALLATION
2. 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
timestheBUSRatioequalstheCPU'sInternalfrequency(the advertisedCPUspeed).
3. CPU to BUS Frequency Ratio (BF0, BF1)
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.
CPU External Clock (BUS) Frequency Selection
50MHz
FS1
1
2
3
FS0 FS2
55MHz
FS1
FS0
FS2
1
2
360MHz
FS1
FS0
FS2
1
2
366MHz
FS1
FS0
FS2
1
2
3
Complete Names :
Intel Pentium P54C, P55C
AMD K5, K6
Cyrix M1, M2 CPU : BUS Frequency Ratio
3.0x(3/1)
3.0x(3/1)
4.0x(4/1)
BF0
BF1
2.5x(5/2)
2.5x(5/2)
1.0x(1/1)
BF0
BF1
2.0x(2/1)
2.0x(2/1)
2.0x(2/1)
BF0
BF1
1.5x(3/2)
3.5X(3/1)
3.0x(3/1)
BF0
BF1
P54C/K5
P55C/K6/M2
Cyrix M1
Set the jumpers by the Internal speed of the Intel, AMD, or Cyrix CPU as follows:
(BUS Freq.) (Freq. Ratio)
CPU Model Freq. Ratio BUS Freq. FS2 FS1 FS0 BF0 BF1
Intel Pentium 233MHz 3.5x 66MHz [2-3] [2-3] [1-2] [1-2] [1-2]
Intel Pentium 200MHz 3.0x 66MHz [2-3] [2-3] [1-2] [1-2] [2-3]
Intel Pentium 166MHz 2.5x 66MHz [2-3] [2-3] [1-2] [2-3] [2-3]
Intel Pentium 150MHz 2.5x 60MHz [2-3] [2-3] [2-3] [2-3] [2-3]
Intel Pentium 133MHz 2.0x 66MHz [2-3] [2-3] [1-2] [2-3] [1-2]
Intel Pentium 120MHz 2.0x 60MHz [2-3] [2-3] [2-3] [2-3] [1-2]
Intel Pentium 100MHz 1.5x 66MHz [2-3] [2-3] [1-2] [1-2] [1-2]
Intel Pentium 90MHz 1.5x 60MHz [2-3] [2-3] [2-3] [1-2] [1-2]
Intel Pentium 75MHz 1.5x 50MHz [2-3] [1-2] [2-3] [1-2] [1-2]
AMD-K6-PR233 233MHz 3.5x 66MHz [2-3] [2-3] [1-2] [1-2] [1-2]
AMD-K6-PR200 200MHz 3.0x 66MHz [2-3] [2-3] [1-2] [1-2] [2-3]
AMD-K5-PR133 100MHz 1.5x 66MHz [2-3] [2-3] [1-2] [1-2] [1-2]
AMD-K5-PR120 90MHz 1.5x 60MHz [2-3] [2-3] [2-3] [1-2] [1-2]
AMD-K5-PR100 100MHz 1.5x 66MHz [2-3] [2-3] [1-2] [1-2] [1-2]
AMD-K5-PR90 90MHz 1.5x 60MHz [2-3] [2-3] [2-3] [1-2] [1-2]
AMD-K5-PR75 75MHz 1.5x 50MHz [2-3] [1-2] [2-3] [1-2] [1-2]
*Cyrix 166+ 133MHz 2.0x 66MHz [2-3] [2-3] [1-2] [2-3] [1-2]
*NOTE: Only Cyrix Rev 2.7 or later is supported on this motherboard. See next page for revision identifi-
cation. Bootup screen will show 6x86-P166+ with the Cyrix 166+ installed on this motherboard.

ASUS TX97-XV User’s Manual 17
III. INSTALLATION
(System Memory)
III. INSTALLATION
4. Voltage Regulator Output Selection (VID0, 1, 2)
These jumpers set the voltage supplied to the CPU. The voltage regulators will
automatically detect and switch between Single PowerPlane (STD & VRE) and
Dual Power Planes.
Intel P54C Pentium
(75-233MHz) Intel P55C Pentium MMX (150-200MHz) AMD-K5 (PR75-133MHz) Cyrix 6x86 166+ Rev2.7 (133MHz)
AMD-K6
(PR166-233MHz)
Type Setting Voltage VID0 VID1 VID2
Intel/AMD/Cryix P54C/CS/K5/M1 3.5V(VRE) [2-3] [1-2] [1-2]
Intel/AMD P54C/CS/K5 3.4V(STD) [2-3] [1-2] [2-3]
AMD K6/PR233 3.2V [1-2] [ ] [2-3]
AMD K6/PR166, PR200 2.9V [2-3] [2-3] [1-2]
Intel/Cyrix P55C MMX/M2 2.8V [2-3] [2-3] [2-3]
Voltage Regulator Output Selection 2.5Volts
1
2
3
2.7Volts
1
2
3
3.5Volts
(VRE)
1
2
3
VID1
VID2
VID0
1
2
33.4Volts
(STD)
VID1
VID2
VID0
1
2
3
2.8Volts
1
2
3
1
2
32.9Volts
VID1
VID2
VID0
3.2Volts
VID1
VID2
VID0
Compatible Cyrix CPU Identification
The only Cyrix CPU that is supported on this motherboard is
labeled Cyrix 6x86 P166+ but must be Revision 2.7 and later.
Look on the underside of the CPU for the serial number. The
number should read G8DC6620A or larger.
(VID0-3)
(VID1-3)

18 ASUS TX97-XV User’s Manual
III. INSTALLATION
5. VGA Interrupt (VIRQ)
This jumper enables or disables the onboard VGA’s interrupt.
VGA Interrupt (Disable/Enable)
Disable (Default)
VIRQ
Enable
VIRQ

ASUS TX97-XV User’s Manual 19
III. INSTALLATION
2. System Memory (SIMM & DIMM)
This motherboard supports four 72-pin, 32-bit SIMMs (Single Inline Memory Mod-
ules) of 4, 8, 16, 32, or 64MB to form a memory size between 8MB to 256MB. The
SIMMs can be either 60ns or 70ns Fast Page Mode (FPM) (Asymmetric or Sym-
metric), or Enhanced Data Out (EDO) (BEDO & Parity are not supported). SIMMs
must be installed in pairs so that each Row (see Map of Motherboard for Row loca-
tions) contains 64-bits of the same size and type of memory chips. One side (with
memory chips) of the SIMM module takes up half a Row on the motherboard.
Dual Inline Memory Modules (DIMM’s) can be used when the SIMM sockets are
not used. Two sockets are available for 3.3Volt (power level) Unbuffered Synchro-
nous 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"
inBIOSChipsetSetup oftheBIOSSOFTWARE. Ifboth 60nsand70nsmemory
are used, set "Auto Configuration" to 70ns. Do not use memory modules with
more than 24 chips per module. Modules with more than 24 chips exceed the
design specifications of the memory subsystem and will be unstable.
Memory Socket SIMM Memory Module Total Memory
SIMM Sockets 1&2 4MB, 8MB, 16MB, 32MB, 64MB x2
(Rows 0 & 1) 72-pin FPM or EDO SIMM
(DIMM Sockets must be empty)
SIMM Sockets 3&4 4MB, 8MB, 16MB, 32MB, 64MB x2
(Rows 2 & 3) 72-pin FPM or EDO SIMM
(DIMM Sockets must be empty)
Total System Memory (Max 256MB) =
WARNING: Do not install both SIMMs and DIMMs at the same time or
elseyouwillburnyourmemory. MixingSIMMsandDIMMsrequire5.0Volt
(signal level) tolerant memory chips which are currently unavailable.
Memory Socket DIMM Memory Module Total Memory
DIMM Socket 1 8MB, 16MB, 32MB, 64MB, 128MB x1
(Rows 3 & 2) 168-pin SDRAM or EDO DIMM
(SIMM Sockets must be empty)
DIMM Socket 2 8MB, 16MB, 32MB, 64MB, 128MB x1
(Rows 1 & 0) 168-pin SDRAM or EDO DIMM
(SIMM Sockets must be empty)
Total System Memory (Max 256MB) =

20 ASUS TX97-XV User’s Manual
III. INSTALLATION
SIMM Memory Installation
1. The SIMM memory modules will only fit in one orientation as shown because
of a "Plastic Safety Tab" on one end of the SIMM sockets which requires the
"Notched End" of the SIMM memory modules.
72 Pin SIMM Sockets
4321
Notched End
2. Press the memory module firmly into place starting from a 45 degree angle
making sure that all the contacts are aligned with the socket.
3. With your finger tips, rock the memory module into a vertical position so that it
clicks into place.
Metal Clip
Plastic Safety Tab (This Side Only) Mounting Hole
72
Pi
n
DRAM
i
n
SIMM
S
oc
k
et
4. The plastic guides should go through the two "Mounting Holes" on the sides and
the "Metal Clips" should snap on the other side.
5. To release the memory module, squeeze both "Metal Clips" outwards and rock
the module out of the "Metal Clips".
(System Memory)
III. INSTALLATION