ASUS VX97 User Manual

R

VX97

Pentium 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
W ARRANTIES 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 DAT A, 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 MA Y APPEAR IN THIS MANUAL, INCLUD­ING THE PRODUCTS AND SOFTWARES DESCRIBED IN IT.

Copyright © 1997 ASUSTeK COMPUTER INC. All Rights Reserved.

Product Name: ASUS VX97
Manual Revision: 1.02
Release Date: May 1997

2

ASUS VX97 User's Manual

ASUS CONTACT INFORMATION

ASUSTeK COMPUTER INC.

Marketing Info:

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

Technical Support:

Fax: [phone]
BBS: 886-2-896-4667
Email: [e-mail]
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: [e-mail]

Technical Support:

BBS: 1-408-474-0555
Email: [e-mail]

ASUS COMPUTER GmbH

Marketing Info:

Address: Harkort Str. 25, 40880 Ratingen, BRD, Germany
Telephone: [phone]
Fax: [phone]
Email: [e-mail]

Technical Support:

BBS: 49-2102-448690
Email: [e-mail]

ASUS VX97 User's Manual 3

CONTENTS

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

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

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

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

Features of the VX97 Motherboard ................................................. 8

Parts of the VX97 Motherboard ................................................. 9

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

Map of the VX97 Motherboard ....................................................... 10

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

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

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

Compatible Cyrix CPU Identification .................................. 14

2. System Memory .......................................................................... 17

DRAM Memory Installation Procedures: ............................ 17

3. Central Processing Unit (CPU) ................................................... 18

4. Expansion Cards ......................................................................... 19

Expansion Card Installation Procedure: ............................... 19

Assigning IRQs for Expansion Cards................................... 19

Assigning DMA Channels for ISA Cards ............................. 20

5. External Connectors .................................................................... 21

Power Connection Procedures ................................................... 27

IV. BIOS SOFTWARE ....................................................................... 28

Support Software ............................................................................. 28

Flash Memory Writer Utility ........................................................... 28

Main Menu ........................................................................... 28

Advanced Features Menu ..................................................... 29

Updating your Motherboard's BIOS .......................................... 30

6. BIOS Setup ................................................................................. 31

Load Defaults ....................................................................... 32

Standard CMOS Setup ............................................................... 32

Details of Standard CMOS Setup: ........................................ 33

BIOS Features Setup .................................................................. 36

Details of BIOS Features Setup ............................................ 36

Chipset Features Setup ............................................................... 39

Details of Chipset Features Setup......................................... 39

Power Management Setup.......................................................... 42

Details of Power Management Setup ................................... 42

PNP and PCI Setup .................................................................... 44

Details of PNP and PCI Setup .............................................. 44

Load BIOS Defaults ................................................................... 46

4

ASUS VX97 User's Manual

CONTENTS

Load Setup Defaults ................................................................... 46

Supervisor Password and User Password .................................. 47

IDE HDD Auto Detection .......................................................... 48

Save and Exit Setup ................................................................... 49

Exit Without Saving ................................................................... 49

V. DESKTOP MANAGEMENT........................................................ 51

Desktop Management Interface (DMI)............................................ 51

Introducing the ASUS DMI Configuration Utility ............... 51

System Requirements ........................................................... 51

Using the ASUS DMI Configuration Utility ........................ 52

Notes: .................................................................................... 52

VI. ASUS PCI-SC200 SCSI Card...................................................... 55

NCR SCSI BIOS and Drivers .......................................................... 55

The ASUS PCI-SC200 SCSI Interface Card ................................... 56

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

Setting the INT Assignment ....................................................... 57

Terminator Settings .................................................................... 57

SCSI ID Numbers ...................................................................... 58

VII. ASUS I-A16C Audio Card ......................................................... 59

ASUS I-A16C Audio Features ................................................... 59

Unpacking and Handling Precautions ........................................ 59

Layout and Connectors .............................................................. 60

Connectors ............................................................................ 60

CD-Audio Connector Pin Definitions ........................................ 60

The Following Sections are Available with ASUS Audio Bundle Only

Audio Driver Installation .................................................................... 3

Manual Information ................................................................... 3

Installation CD ........................................................................... 3

Installation CD Contents ...................................................... 3

Win95 Audio Driver ............................................................................ 4

Configuration Manager .............................................................. 5

Creative PnP Configuration Manager (CTCM) ......................... 5

Win3.1x Audio Driver ......................................................................... 5

Audio Drivers ............................................................................. 7

Environment Variables ............................................................... 11

SOUND Environment variable............................................. 11

BLASTER Environment Variable ........................................ 11

MIDI Environment Variable ................................................. 12

Maximum Recording Rates for the Audio Hardware ........... 12

ASUS VX97 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 VX97 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 Setup: BIOS software setup information.
V. Software: Information on the included support software
VI. ASUS SCSI: Installation of optional ASUS SCSI cards
VII. ASUS I-A16C: Installation of an optional 16-bit Audio card
VIII. DOS/Win3.1x: Audio Software Manual (with ASUS I-A16C bundle)
IX. Windows 95: 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.

I. INTRODUCTION

(Manual / Checklist)

√ The ASUS VX97 motherboard
√ 2 serial port ribbon cables attached to a mounting bracket
√ 1 parallel ribbon cable with mounting bracket
√ 1 IDE ribbon cable
√ 1 floppy ribbon cable
√ Support drivers and utilities as follows (view FILELIST.TXT for details)

• Flash Memory Writer utility to update the FLASH BIOS

• Desktop Management Interface (DMI) utility

• Bus Master IDE Drivers for various operating systems

• Audio drivers and utilities (included with ASUS I-A16C CD bundle only)

• Readme files for descriptions and use of the files

• Technical Support Form

√ This user's manual (Audio sections included with ASUS I-A16C CD bundle)

Optional PS/2 mouse cable with mounting bracket
Optional infrared module
Optional ASUS PCI-SC200 Fast-SCSI or PCI-SC860 Ultra-Fast SCSI card
Optional ASUS I-A16C Audio Card

ASUS VX97 User's Manual 7

II. FEATURES

(Features)

II. FEATURES

Features of the VX97 Motherboard

The ASUS VX97 is carefully designed for the demanding PC user who wants a
great many features in a small package. This motherboard:

• Intel Chipset: Features Intel's 430VX PCIset with I/O subsystems.

®

• V ersatile Processor Support: Intel Pentium

P54CS), IBM®/Cyrix® 6x86-PR166+ (Rev 2.7 or later), IBM®/Cyrix® 6x86MX
(PR166 & above), AMD-K5™ (PR75-PR133), AMD-K6™ (PR166-PR233).

• 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.

• 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)

75-233MHz (P55C-MMX™, P54C/

™

• L2 Cache: Comes in 256KB or 512KB models.

• Versatile DRAM Memory Support: Supports 72-pin SIMMs of 4MB, 8MB,

16MB, or 32MB to form a memory size between 8MB to 128MB. Supports
both Fast Page Mode (FPM) and Extended Data Output (EDO) SIMMs.

• ISA and PCI Expansion Slots: Provides three PCI slots, three ISA slots, and one

PCI/ISA share slot.

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

one parallel port with EPP and ECP capabilities. UART2 can also be directed
from COM2 to the Infrared Module for wireless connections. T wo floppy drives
of either 5.25" or 3.5" (1.44MB or 2.88MB) are also supported without an exter­nal card. The Japanese "Floppy 3 mode" (3.5" 1.2MB) floppy standard is

also supported.

• 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, provides faster data transfer rates, and supports Enhanced IDE devices
such as T ape Backup and CD-ROM drives. This controller supports PIO Modes
3 and 4 and Bus Master IDE DMA Mode 2. BIOS now supports IDE CD-

ROM or SCSI bootup.

• Optional IrDA and PS/2 Mouse Connector: This motherboard supports an

optional infrared port module for wireless interface and a PS/2 mouse cable set.

• Symbios SCSI BIOS: This motherboard has firmware that supports optional

ASUS SCSI controller cards.

8 ASUS VX97 User's Manual

II. FEATURES

Parts of the VX97 Motherboard

Programmable
Flash ROM

3 ISA Slots
3 PCI Slots
1 PCI/ISA
Share Slot

IDE/Floppy

Super Multi-I/O

Serial/Parallel Ports

II. FEATURES

(Parts of Board)

Intel's 430VX
PCIset

(4) 72-pin SIMM
Sockets

CPU ZIF
Socket 7

256KB / 512KB L2 Cache

ASUS VX97 User's Manual 9

III. INSTALLATION

Map of the VX97 Motherboard

III. INSTALLATION

(Map of Board)

ISA Slot 4

Keyboard BIOS

ISA Slot 3

ISA Slot 2

Flash ROM for BIOS

ISA Slot 1

PCI Slot 4

PCI Slot 3

Intel PIIX3
PCIset

Universal Serial
Bus (Reserved)

Block Program (Dis/En)

PCI Slot 2

BBLKW

PCI Slot 1

Intel 430VX
PCIset

PS/2 Mouse

Primary IDE

Floppy Drives

Keyboard

Serial Ports
COM 1

Parallel Port (Printer)

Board Power Input

P8

Secondary IDE

SIMM Socket 1 (Bank 0)

COM 2

P9

SIMM Socket 2 (Bank 0)

SIMM Socket 3 (Bank 1)

SIMM Socket 4 (Bank 1)

RTC Clear

CR2032
3V Lithium Cell
(RTC RAM
Memory)

IDE LED

Panel Connections

Infrared Con.

Battery Test

CPU Voltage ID

VID2
VID1
VID0

BUS FREQ

FS1

FS2

BUS Ratio

BF1

FS0

CPU ZIF Socket 7

BF0

256/512KB OnBoard L2 Cache

10 ASUS VX97 User's Manual

III. INSTALLATION

Jumpers

1) BBLKW p. 13 Flash ROM Boot Block Program (Disable/Enable)

2) RTCLR / JP1 p. 13 Real Time Clock RAM / Battery Test Lead

3) VID0, 1, 2 p. 14 CPU Voltage Selection

4) FS0, FS1, FS2 p. 15 CPU External Clock (BUS) Frequency Selection

5) BF0, BF1 p. 15 CPU:BUS Frequency Ratio

Expansion Slots

1) SIMM Sockets p. 16 72-Pin DRAM Memory Expansion Sockets

2) CPU ZIF Socket 7 p. 18 Central Processing Unit (CPU) Socket

3) ISA Slots p. 19 16-bit ISA Bus Expansion Slots

4) PCI Slots p. 19 32-bit PCI Bus Expansion Slots

Connectors

1) KBCON p. 21 Keyboard Connector (5-pin Female)

2) PS2MOUSE p. 21 PS/2 Mouse Connector (6-pin Block)

3) PRINTER p. 22 Parallel (Printer) Port Connector (26-pin Block)

4) COM1, COM2 p. 22 Serial Port COM1 & COM2 (10-pin Blocks)

5) FLOPPY p . 23 Floppy Drive Connector (34-pin Block)

6) POWER p. 23 Motherboard Power Connector (12-pin Block)

7) IDE1, IDE2 p. 24 Primary / Secondary IDE Connector (40-pin Blocks)

8) IDELED p. 2 4 IDE LED Activity Light

9) TB LED (PANEL) p. 25 Turbo LED/Power LED (2-pins)

10) SMI (PANEL) p. 25 SMI Switch Lead (2-pins)

11) RESET (PANEL) p. 25 Reset Switch Lead (2-pins)

12) KEYLOCK (PANEL) p. 25 Keyboard Lock Switch Lead (5-pins)

13) SPEAKER (PANEL) p. 25 Speaker Output Connector (4-pins)

14) IR p. 26 Infrared Port Module Connector

(Map of Board)

III. INSTALLATION

ASUS VX97 User’s Manual 11

III. INSTALLATION

III. INSTALLATION

Installation Steps

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

1. Set Jumpers on the Motherboard

2. Install Memory Modules

3. Install the Central Processing Unit (CPU)

4. Install Expansion Cards

5. Connect Ribbon Cables, Cabinet Wires, and Power Supply

6. Setup the BIOS Software

1. Jumpers

Several hardware settings are made through the use of jumper caps to connect jumper
pins (JP) on the motherboard. See "Map of the Motherboard" on page 4 for loca­tions of jumpers. The jumper settings will be described numerically such as [----],

(Jumpers)

[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
pins 2&3. Jumpers with two pins will be shown as for Short (On) and for
Open (Off). For manufacturing simplicity, the jumpers may be sharing pins from
other groups. Use the diagrams in this manual instead of following the pin layout on
the board. Settings with two jumper numbers require that both jumpers be moved
together . T o 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
components 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. 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.

to connect pins 1&2 and to connect

12 ASUS VX97 User’s Manual

III. INSTALLATION

Jumper Settings

1. Flash ROM Boot Block Programming (BBLKW)

This sets the operation mode of the boot block area of the Programmable Flash
ROM to allow programming in the Enabled position. This is required only if
prompted by the Flash Memory Writer Utility as shown in BIOS SOFTW ARE.

Programming BBLKW

Disabled [1-2] (Default)
Enabled [2-3]

BBLKW

1
2
3

Disabled / Protected
(Default)

Boot Block Programming (Disable / Enable)

BBLKW

1
2
3

Enabled

2. Real Time Clock (RTC) RAM

The CMOS RAM is powered by the onboard button cell battery. To clear the
R TC data: (1) Turn of f your computer , (2) Short the two pads (Labeled: SHORT
HERE TO CLEAR CMOS) momentarily with a metallic object ( 3) T urn on your
computer, (4) Hold down <Delete> during bootup and enter BIOS setup to re­enter user preferences.

Battery Test Jumper (JP1) (For Service Use Only)

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

(Jumpers)

III. INSTALLATION

JP1

Short to Clear

RTC RAM

Operation
(Default)

Test Mode

Battery Test

ASUS VX97 User’s Manual 13

III. INSTALLATION

3. 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 Power Plane & Dual Power Planes.

WARNING! Incorrect settings can damage your CPU. If you are not abso­lutely clear on CPU jumper settings, check with your retailer.

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)

NOTE: These jumpers are labeled from right to left.

Manufacturer CPU Type Single Plane Dual Plane VID2 VID1 VID0

Intel/AMD/IBM/Cyrix P54C/CS/K5/6x86 3.5V(VRE) ---- [2-3] [2-3] [1-2]
AM D K6-PR166,200 ---- 2.9 V olts

Intel/AMD P54C/CS/K5 3.4V(STD) ---- [2-3] [2-3] [2-3]
Intel/AMD/Cyrix P55C/6x86MX ---- 2.8 V olts

AMD K6-PR233 ---- 3.2 Volts [1-2] [ ] [2-3]

321 321 321
VID2
VID1
VID0

Single Plane

Dual Plane

K6-PR166,200
(2.9Volts)

P54C/CS/K5/6x86
(VRE 3.5V)

P55C/6x86MX
(2.8Volts)

P54C/CS
(STD 3.4V)

K6-PR233
(3.2Volts)

VID2:3
VID1:3

Voltage Regulator Output Selection

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.

14 ASUS VX97 User’s Manual

III. INSTALLATION

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)

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.

FS1

FS0

FS2

FS1

FS0

FS2

FS1

FS0

FS2

FS1

FS0

FS2

FS1

FS0

FS2

BF1

1
2
3

BF0

Complete Names:

Intel Pentium P54C, P55C-MMX
AMD K5, K6
IBM/Cyrix 6x86, 6x86MX

BF0

1
2
3

60MHz

BF1

2.0x(2/1)

2.0x(2/1)

2.0x(2/1)

BF0

1
2
3

50MHz

CPU External Clock (BUS) Frequency Selection

P54C/K5
P55C/K6/MX
IBM/Cyrix 6x86

CPU : BUS Frequency Ratio

55MHz

BF1

1.5x(3/2)

3.5X(7/2)

3.0x(3/1)

1
2
3

66MHz

BF1

2.5x(5/2)

2.5x(5/2)

1.0x(1/1)

1
2
3

75MHz

BF0

3.0x(3/1)

3.0x(3/1)

4.0x(4/1)

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 BF1 BF0

Intel Pentium 233MHz 3.5x 66MHz [2-3] [1-2] [2-3] [1-2] [1-2]
Intel Pentium 200MHz 3.0x 66MHz [2-3] [1-2] [2-3] [2-3] [1-2]
Intel Pentium 166MHz 2.5x 66MHz [2-3] [1-2] [2-3] [2-3] [2-3]
Intel Pentium 150MHz 2.5x 60MHz [2-3] [2-3] [1-2] [2-3] [2-3]
Intel Pentium 133MHz 2.0x 66MHz [2-3] [1-2] [2-3] [1-2] [2-3]
Intel Pentium 120MHz 2.0x 60MHz [2-3] [2-3] [1-2] [1-2] [2-3]
Intel Pentium 100MHz 1.5x 66MHz [2-3] [1-2] [2-3] [1-2] [1-2]
Intel Pentium 90MHz 1.5x 60MHz [2-3] [2-3] [1-2] [1-2] [1-2]
Intel Pentium 75MHz 1.5x 50MHz [2-3] [2-3] [2-3] [1-2] [1-2]

(Jumpers)

III. INSTALLATION

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

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

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

*Cyrix 166+ 133MHz 2.0x 66MHz [2-3] [1-2] [2-3] [1-2] [2-3]

*NOTE: Only Cyrix Revision 2.7 or later is supported on this motherboard. Bootup screen will show

6x86-P166+ with the Cyrix 166+ installed on this motherboard.

ASUS VX97 User’s Manual 15

2. System Memory

This motherboard supports four 72-pin SIMMs (Single Inline Memory Modules) of
4MB, 8MB, 16MB, or 32MB to form a memory size between 8MB to 128MB. The
DRAM can be either 60ns or 70ns Fast Page Mode (FPM) (Asymmetric or Symmet­ric) or Enhanced Data Output (EDO). SIMMs must be installed in pairs so that each
bank contains two of the same size memory modules. Maximum memory size of
SIMM’s must be 128MB or less.

IMPORTANT: Memory speed setup is requir ed in BIOS Chipset Setup "Auto
Configuration."

Install memory in any or all of the banks in any combination as follows:

Bank Memory Module Total Memory
Bank 0 4MB, 8MB, 16MB, 32MB x2

SIMM Slots 1&2 72-pin FPM or EDO SIMM

III. INSTALLATION

(System Memory)

Bank 1 4MB, 8MB, 16MB, 32MB x2
SIMM Slots 3&4 72-pin FPM or EDO SIMM

III. INSTALLATION

Total System Memory (Max 128MB) =

IMPORTANT: 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.

16 ASUS VX97 User’s Manual

III. INSTALLATION

DRAM Memory Installation Procedures:

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 slots which requires the
"Notched End" of the SIMM memory modules.

1234

DRAM Memory
Module Example

Notched End

72 Pin SIMM Sockets

Bank 0 Bank 1

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.

Support Clip

Safety Tab (This Side Only)

72 Pin DRAM in SIMM Socket

Mounting Hole

4. The plastic guides should go through the two "Mounting Holes" on the sides and
the "Metal Clips" should snap on the other side.

(System Memory)

III. INSTALLATION

5. To release the memory module, squeeze both "Metal Clips" outwards and rock
the module out of the "Metal Clips".

ASUS VX97 User’s Manual 17

III. INSTALLATION

(CPU)

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 with the white dot 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. W ith 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

Installed CPU

ZIF Socket 7 with

Example

Pentium Processor

White Dot

18 ASUS VX97 User’s Manual