Asus Pentium TX97-X User manual

Declaration of Conformity
0 EN 55011
0 EN55013
[7 EN 55014
0 EN 55015
0 EN 55020
q EN 55022
1 part part DIN VDE 12 10 0855
q CE marking
j---J EN 60065
0 EN 60335
We, Manufacturer/Importer
(full address)
ASUS COMPUTER GmbH
HARKORT STR. 25
40880 RATINGEN, BRD. GERMANY
declare that the product
( description of the apparatus, system, installation to which it refers)
Mother Board
TX97-X
is in conformity with
(reference to the specification under which conformity is declared)
in accordance with 89/336 EEC-EMC Directive
Limits and methods of measurement
of radio disturbance characteristics of
industrial, scientific and medical (ISM)
high frequency equipment
i
EN 61000-3-2*
EN60555-2
Limits and methods of measurement
of radio disturbance characteristics of
broadcast receivers and associated
equipment
I&I
EN61 000-3-3*
EN60555-3
Limits and methods of measurement
of radio disturbance characteristics of
household electrical appliances,
portable tools and similar electrical
apparatus
q EN 50081-I
q EN 50082-l
Limits and methods of measurement
of radio disturbance characteristics of
fluorescent lamps and luminaries
0 EN 55081-2
Immunity from radio interference of
broadcast receivers and associated
equipment
0 EN 55082-2
Limits and methods of measurement
of radio disturbance characteristics of
information technology equipment
0 ENV 55104
Cabled distribution systems; Equipment 0 EN 50091- 2
for receiving and/or distribution from
sound and television signals
CC
(EC conformity marking)
Disturbances in supply systems caused
by household appliances and similar
electrical equipment “Harmonics”
Disturbances in supply systems caused
by household appliances and similar
electrical equipment “Voltage fluctuations”
Generic emission standard Part 1:
Residual, commercial and light industry
Generic immunity standard Part 1:
Residual, commercial and light industry
Generic emission standard Part 2:
Industrial environment
Generic immunity standard Part 2:
Industrial environment
Immunity requirements for household
appliances tools and similar apparatus
EMC requirements for uninterruptible
power systems (UPS)
The manufacturer also declares the conformity of above mentioned product
with the actual required safety standards in accordance with LVD 73123 EEC
Safety requirements for mains operated
0 EN 60950
electronic and related apparatus for
household and similar general use
Safety of household and similar
0 EN 50091-I
electrical appliances
Manufacturer/Importer
Safety for information technology equrpr
Including electrical bustness equipment
General and Safety requirements for
uninterruptible power systems (UPS)
Signature :
nent
Date : Feb. 22, 1997 Name
: Richard Lee

ASIJS TX97-X
Pentium@ ATX Motherboard
USER’S MANUAL

USER’S NOTICE
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-
guage in any form by any means without the express written permission of ASUSTeK
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 shall ASUS 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.
l Intel, LANDesk, and Pentium are registered trademarks of Intel Corporation.
l IBM is a registered trademark of International Business Machines Corp.
l Symbios is a registered trademark of Symbios Logic Corporation.
l Windows and MS-DOS are registered trademarks of Microsoft Corporation.
l Sound Blaster AWE32 and SB 16 are trademarks of Creative Technology Ltd.
l 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 you may visit the ASUS home page
at http://www.asus.com.tw/ or contact ASUS from the following page.
0 Copyright 1997 ASUSTeK COMPUTER INC. All rights reserved.
Product Name:
ASUS TX979X
Manual Revision: 2.05
Release Date:
April 1997
2
ASUS TX97-X User’s Manual

ASUS CONTACT INFORMATION
ASUSTeK COMPUTER INC.
Marketing Info:
Address: 150 Li-Te Road, Peitou, Taipei, Taiwan, ROC
Telephone: [phone]
Fax:
886-2-894-3449
Email: [email protected]
Technical Support:
Fax:
886-2-895-9254
BBS: 886-2-896-4667
Email: [email protected]
www:
http:/lwww.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 95 131, USA
Telephone: l-408-474-0567
Fax: I-408-474-0568
Email: [email protected]
Technical Support:
BBS: l-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: 49-2 102-448690
Email: [email protected]
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
Map of the ASUS Motherboard .....................................................
12
Installation Steps ............................................................................
14
1. Jumpers
......................................................................................
14
Jumper Settings ..................................................................
15
Compatible IBM/Cyrix CPU Identification
.......................
19
2. System Memory (DIMM) .........................................................
21
DIMM Memory Installation Procedures: ...........................
22
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
4
ASUS TX97-X User’s Manual

CONTENTS
Power Management Setup ........................................................
48
Details of Power Management Setup .................................
48
PNP and PC1 Setup ..................................................................
50
Details of PNP and PC1 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 ..............................................................
58
Desktop Management Interface (DMI) ..........................................
58
Introducing the ASUS DMI Configuration Utility
.............58
System Requirements .........................................................
58
Using the ASUS DMI Configuration Utility ..................... .59
Notes* . ..................................................................................
59
VI. ASUS PCI-SC200 SCSI Card
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
61
SCSI BIOS and Drivers
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
61
The ASUS PCI-SC200 SCSI Interface Card .................................
62
Setting Up the ASUS PCI-SC200 ............................................
62
Setting the INT Assignment .....................................................
63
Terminator Settings ..................................................................
63
SCSI ID Numbers ....................................................................
64
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:
l This device may not cause harmful interference, and
l 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:
l Re-orient or relocate the receiving antenna.
l Increase the separation between the equipment and receiver.
l Connect the equipment to an outlet on a circuit different from that to which
the receiver is connected.
l 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 modifica-
tions 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 Cana-
dian 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 Setup:
BIOS software setup information
V. DMI Utility:
BIOS supported Desktop Management Interface
VI. ASUS PCLSC200: Installation of an optional Fast-SCSI card
Item Checklist
Please check that your package is complete. If you discover damaged or missing
items, please contact your retailer.
lZl The ASUS TX97-X motherboard
IZl 1 IDE ribbon cable
lZl 1 floppy ribbon cable
lZl Support drivers and utilities as follows (view FILELIST.TXT for details)
l Flash Memory Writer utility to update the FLASH BIOS
l Desktop Management Interface (DMI) utility
l Readme files for descriptions and use of the files
l Technical Support Form
lZl This user’s manual
0 .Optional infrared module
0 Optional ASUS PCI-SC200 Fast-SCSI card
ASUS TX97-X User’s Manual
7

Il. FEATURES
Features of the ASUS TX97-X Motherboard
The ASUS TX97-X is carefully designed for the demanding PC user who wants
manv smart features in a small package. This motherboard:
0
0
0
0
0
0
0
r’
Intel Chipset: Features Imel’s 43OTX PCIset with I/O subsystems.
Multi-ProeessorYMuIti-Speed Support: Intel Pentium@ 75200MHz (P55CMMX’“,
P54C/P54CS), IBM@/Cyrix@ P166+ (Rev 2.7 & later), AMD-KS’” (PR75-133MHz),
AMD-K6’” (PR166-233MHz).
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 PC1 Expansion Slots: Provides four 16-bit ISA slots, and four 32-bit
PC1 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) and
LS-120 Floppy Drives (3.5” 120MB, 1.44MB, 720KB) .
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)
PC1 Bus Master IDE Controller: Comes with an onboard Ultra DMA/33
Bus Master IDE controller with two connectors that supports four IDE devices
above 8.4GB in two channels up to 33MB/sec IDE transfers and supports En-
hanced IDE devices. This controller supports PI0 Modes 3 and 4 and Bus Mas-
ter IDE DMA Mode 2. BIOS supports IDE CD-ROM or SCSI bootup.
Level 2 Cache: 5 12KB Pipelined Burst SRAM onboard.
Versatile Memory Support: Is equipped with three DIMM sockets to support
(8, 16, 32,64, or 128MB) 16%pin SDRAM memory modules up to 256MB.
Optional PS/2 Mouse, USB, IrDA Connector: Supports an optional cable and bracket
set to mount the connectors to an unused expansion slot on the system chassis. A
second TrDA connector is available for a standard individual infrared cable set.
SCSI BIOS: Has firmware to support optional ASUS SCSI controller cards.
Optional IrDA Connector: Supports an optional infrared port module for wire-
less interface.
8
ASUS TX97-X User’s Manual

Il. FEATURES
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 ED0 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- IDE specs so there is no
need to upgrade current hard drives or cables.
Concurrent PC1 - Concurrent PC1 allows multiple PC1 transfers from PC1 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, 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 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 pro-
cedures for both Windows 95 and Windows NT.
ASUS TX97-X User’s Manual 9

(This page was intentionally left blank)
10 ASUS TX97-X User’s Manual

II. FEATURES
Parts of the ASUS TX97-X Motherboard
CPU ZIF
3 DIMM Sockets
512KB Pipelined
Socket 7
.
Burst L2 Cache
T: PS12 Mouse _
B: PSI2 Keyboard
T: USB Port 1
B: USB Port 2 -
COM 1 -
T: Parallel Conn.
B: Serial Conn. -
COM2-
Intel’s 430TX
PClset -
4 PCI Slots -
4 ISA Slots -
-
-
-
-
Programmable
Flash ROM
ASUS TX97-X User’s Manual 11

Ill. INSTALLATION
Map of the ASUS Motherboard
ps/2 Top: Mouse
I
Bottom: Keyboard
1Top: USB 1
JSB Bottom: USB
E
a
0
0
FANPWRB
Muk-l/O (En/Did
1p-q SIO
Row
0
CPU ZIF Socket 7
I
PCI Slot 1
I
BUS FREQ
PCI Slot 2
PCI Slot 3
PCI Slot 4
ISA Slot 1
ISA Slot 2
ISA Slot 3
I
BUSFREQ E
. . . BFO g
El
. . . BFI e
0
I
ISA Slot 4
I
CPU Voltage
0
0
Block Program (DidEn)
I=] BBLKW
71
Infrared Con (IrDA)
Panel Connections
nn n n n n n n n n n
Id Illllllllll
l mmmmmmmmm
IDE LED
12
ASUS TX97-X User’s Manual

III. INSTALLATION
Jumpers
1) SIO
2) BBLKW
3) RTCLR
4) FSO, FS 1, FS2
5) BFO, BFl
6) VIDO, VIDl, VID2
Exoansion Slots
1) DIMM Sockets
2) CPU ZIF Socket 7
3) ISA Slots
4) PC1 Slots
Connectors
1) PS2KEYBOARD
2) PS2MOUSE
3) PRINTER
4) COMl, COM2
5) USB
6) FLOPPY
7) FANPWRl, 2,3
8) Primary / Second IDE
9) IDELED
10) MSG LED (PANEL)
11) SMI (PANEL)
12) PWR SW (CONl)
13) RESET (PANEL)
14) KEYLOCK (PANEL)
15) SPEAKER (PANEL)
16) IR
17) ATXPWR
p. 15
Multi-I/O Selection (Enable/Disable)
p. 16
Flash ROM Boot Block Program (Disable/Enable)
p. 17
Real Time Clock RAM (Operation/Clear Data)
p. 18 CPU External Clock (BUS) Frequency Selection
p. 18 CPU:BUS Frequency Ratio
p. 19
CPU Voltage Regulator Output Selection
p. 21
p. 23
p. 24
p. 24
16%Pin DIMM Memory Expansion Sockets
Central Processing Unit (CPU) Socket
16-bit ISA Bus Expansion Slots
32-bit PC1 Bus Expansion Slots
p. 26
p. 26
p. 27
p. 27
p. 28
p. 28
p. 29
p. 30
p. 30
p. 31
p. 31
p. 31
p. 31
p. 31
p. 31
p. 32
D. 32
PS/2 Keyboard Connector (6-pin Female)
PS/2 Mouse Connector (6-pin Female)
Parallel (Printer) Port Connector (25-pin Female)
Serial Port COMl & COM2 (Two 9-pin Male)
Universal Serial BUS Ports 1 & 2 (Two 4-pin Female)
Floppy Drive Connector (34-pin Block)
1 Chassis, 2 CPU, 3 Power Supply Fan Power Lead (3-pin Block)
Primary / Secondary IDE Connector (40-pin Blocks)
IDE LED Activity Light
System Message LED (2-pins)
SMI Switch Lead (2-pins)
ATX Power & Soft-Off Switch Lead (2-pins)
Reset Switch Lead (2-pins)
Keyboard Lock Switch Lead (5-pins)
Speaker Output Connector (4-pins)
Infrared Port Module Connector
ATX Motherboard Power Connector (20-pin Block)
ASUS TX97-X User’s Manual 13

Ill. INSTALLATION
Installation Steps
Before using your computer, you must complete the following steps:
1.
Set Jumpers on the Motherboard
2. Install System 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
I .
Jumpers
Several hardware settings are made through the use of jumper caps to connect jumper
pins (JP) on the motherboard. See “Map of the ASUS Motherboard” for locations of
jumpers. The jumper settings will be described numerically such as [----I, [l-2],
[2-31 for no connection, connect pins l&2, and connect pins 28~3 respectively. Pin
1 for our motherboards is always on top ‘I”’
P,” 1
or on the left K!!ZLEl when holding the
motherboard with the keyboard connector away from yourself. A “1” is written
besides pin 1 on jumpers with three pins. The jumpers will also be shown graphi-
cally such as m to connect pins l&2 and [ to connect pins 2&3. Jumpers
with two pins will be shown as m for Short (On) and m 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. Set-
tings 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 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.
14 ASUS TX97-X User’s Manual

Ill. INSTALLATION
Jumper Settings
1. Onboard Multi-I/O Selection (SIO)
You can selectively disable each onboard Multi-I/O item (floppy, serial, paral-
lel, and IrDA) through Chipset Features Setup of BIOS SOFTWARE or dis-
able all Multi-I/O items at once with the following jumper in order to use your
own Multi-I/O card.
Mu1 ti-I/O
SIO
Enable
[ l-21 (Default)
Disable -
E2 31
0 1
P
2
3
Enable (Default)
Disabled
Multi I/O Setting (Enable / Disable)
ASUS TX97-X User’s Manual
15

III. INSTALLATION
2. 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 En&led position. This is required only if
prompted by the Flash Memory Writer Utility as shown in BIOS SOFTWARE.
Programming
BBLKW
Disabled/Protect
[l-2] (Default)
Enabled
P-31
BBLKW BBLKW
1 q
2
3
D
Disabled / Protected
(Default) Enabled
Boot Block Programming (Disable / Enable)
16
ASUS TX97-X User’s Manual

Ill. INSTALLATION
3. 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 unplug the AC power, (2) Move this
jumper to “Clear Data,” (3) Move the jumper back to “Operation,” (4) Plug in
the AT power and 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 l&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 [l-2] (Default)
Clear Data [2-31 (momentarily)
RTCLR
Battery Test RTCLR
Operation (Default) Clear Data
RTC RAM (Operation / Clear Data)
ASUS TX97-X User’s Manual
17

III. INSTALLATION
CPU External (BUS) Frequency Selection (FSO, FSl, 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).
CPU to BUS Frequency Ratio (BFO, BFl)
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 iumpers CPU External (BUS) Frequency Selection.
”
J
Complete Names:
Intel Pentium P54C, P55C-MMX
AMD K5, K6
IBM/Cyrix Ml, M2
n-n-n
717171 n-n-n
717171
g2g g2g g??g g!fg
1 1 1 1
22 2 2
3 3 3
3
50MHz 55MHz 6OMHz 66MHz
3PU External Clock (BUS) Frequency Selection
5s 5; !g
Aa 8; @; i;
P54C/K5 d 1.5x(3/2) 2.0x(2/1) 2.5x(5/2) 3.0x(3/1)
P55C/K6/M2 -N 3.5X(7/2) 2.0x(2/1) 2.5x(5/2) 3.0x(3/1)
IBM/Cyrix Ml + 3.0x(3/1 )
2.0x(2/1) 1.0x(1/1) 4.0x(4/1)
CPU : BUS Frequency Ratio
Set the jumpers by the Internal speed of the Intel, AMD, IBM, or Cyrix CPU as follows:
Model CPU
Intel (Reserved)
Intel Pentium
Intel Pentium
Intel Pentium
Intel Pentium
Intel Pentium
Intel Pentium
Intel Pentium
Intel Pentium
Freq.
233MHz
200MHz
166MHz
1 SOMHz
133MHz
120MHz
1 OOMHz
90MHz
75MHz
Ratio
3.5x
3.0x
2.5x
2.5x
2.0x
2.0x
1.5x
1.5x
1.5x
I
BUS Freq.
66MHz
66MHz
66MHz
6OMHz
66MHz
60MHz
66MHz
60MHz
5OMHz
- (BUS Freq.)
FS2 FSl FSO
[2-31 [2-31 [l-2]
[2-31 [2-31 [l-2]
[2-31 [2-31 [l-2]
[2-31 [2-31 [2-31
[2-3) [2-31 [l-2]
[2-31 [2-31 [2-31
[2-3) [2-31 [l-2]
[2-31 [2-31 [2-31
[2-31 [l-2] [2-31
I
(Freq. Ratio)
BFl BFO
[l-2] [l-2]
[2-31 [l-2]
[2-31 [2-31
[2-31 [2-31
[l-2] [2-31
[l-2] [2-31
[l-2] [l-2]
[l-2] [l-2]
[l-2] [l-2]
AMD-K6-PR233 233MHz 3.5x
66MHz
[2-31 [2-31 [l-2]
[l-2] [l-2]
AMD-K6-PR200 200MHz 3.0x 66MHz
[2-31 [2-33 [l-2]
[2-31 [l-2]
AMD-K6-PR166 166MHz 2.5x
66MHz [2-31 [2-31 [l-2]
[2-31 [2-3)
AMD-KS-PR 133
1 OOMHz
1.5x 66MHz [2-31 12-31 [l-2] [l-2]
[l-2]
AMD-KS-PRl20 90MHz
1.5x 60MHz [2-31 [2-31 [2-31
[l-2] [l-2]
AMD-KS-PR 100
1 OOMHz
1.5x
66MHz [2-31 [2-31 [l-2]
[l-2] [l-2]
AMD-KS-PR90 90MHz
1.5x 60MHz [2-31 [2-31 [2-31
[l-2] [l-2]
AMD-K5-PR75 75MHz
1.5x 5OMHz [2-31 [l-2] [2-31
[l-2] [l-2]
*IBM/Cyrix 166+ 133MHz
2.0x 66MHz [2-31 [2-31 [l-2] [l-2]
[2-31
*NOTE:
Only IBM or Cyrix Rev 2.7 or later is supported on this motherboard (see next page). Bootup
screen will show 6x86-P166+ with the Cyrix 166+ installed on this motherboard.
18
ASUS TX97-X User’s Manual