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 language 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, incidental, 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 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 ASUS' home page at: http://www.asus.com.tw/ or contact ASUS from the following page. Copyright 1997 ASUSTeK COMPUTER INC. All rights reserved.
Product Name: ASUS TX97-X Manual Revision: 2.03 Release Date: March 1997
ASUS TX97-X User's Manual

ASUS CONTACT INFORMATION

ASUSTeK COMPUTER INC.

Marketing Info:

Address: 150 Li-Te Road, Peitou, Taipei, Taiwan, ROC Telephone: 886-2-894-3447 Fax: 886-2-894-3449 Email: info@asus.com.tw

Technical Support:

Fax: BBS: Email: WWW: Gopher: FTP: 886-2-895-9254 886-2-896-4667 tsd@asus.com.tw http://www.asus.com.tw/ gopher.asus.com.tw ftp.asus.com.tw/pub/ASUS
ASUS COMPUTER INTERNATIONAL
Address: 721 Charcot Avenue, San Jose, CA 95131, USA Telephone: 1-408-474-0567 Fax: 1-408-474-0568 Email: info-usa@asus.com.tw
BBS: Email: 1-408-474-0555 tsd-usa@asus.com.tw

ASUS COMPUTER GmbH

Address: Harkort Str. 25, 40880 Ratingen, BRD, Germany Telephone: 49-2102-445011 Fax: 49-2102-442066 Email: info-ger@asus.com.tw
BBS: Email: 49-2102-448690 tsd-ger@asus.com.tw

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 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 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

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.

I. INTRODUCTION

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 PCI-SC200: Installation of an optional Fast-SCSI card. VII. Windows 95: Audio Software Section (optional) VIII. DOS/Win3.1x: Audio Software Section (optional) I. INTRODUCTION (Manual / Checklist) 7
How this manual is organized

Item Checklist

Please check that your package is complete. If you discover damaged or missing items, please contact your retailer. The ASUS TX97-X motherboard 1 IDE ribbon cable 1 floppy ribbon cable Support drivers and utilities as follows (view FILELIST.TXT for details) LANDesk Client Manager (LDCM) Software Flash Memory Writer utility to update the FLASH BIOS Desktop Management Interface (DMI) utility Audio drivers and utilities (optional) Readme files for descriptions and use of the files Technical Support Form This user's manual Optional infrared module Optional ASUS PCI-SC200 Fast-SCSI card

ASUS TX97-X Users Manual

II. FEATURES
Features of the ASUS TX97-X Motherboard
The ASUS TX97-X 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. Multi-Processor/Multi-Speed Support: Intel Pentium 75-200MHz (P55C-MMX, P54C/P54CS), Cyrix P166+ (Rev 2.7 & later), AMD-K5 (PR75-133MHz). 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 four 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 external 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 devices. 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. Versatile Memory Support: Is equipped with three DIMM sockets to support (8, 16, 32, 64, or 128MB) 168-pin SDRAM memory modules up to 256MB. 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 IrDA connector is available for a standard individual infrared cable set. NCR SCSI BIOS: Has firmware to support optional ASUS SCSI controller cards. Audio Ready: Optional Creative Labs 16C Series Audio with 3D sound. Optional IrDA Connector: This motherboard supports an optional infrared port module for wireless interface.

RTCLR Battery Test RTCLR

Operation (Default)

Clear Data

RTC RAM (Operation / Clear Data)
6. 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 CPUs External frequency (or BUS Clock). The BUS Clock times the BUS Ratio equals the CPU's Internal frequency (the advertised CPU speed). 7. 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.

FS0 FS1 FS2

66MHz 60MHz 50MHz 55MHz CPU External Clock (BUS) Frequency Selection

BF0 BF1

III. INSTALLATION (Jumpers) 18
Set the jumpers by the Internal speed of the Intel, AMD, or Cyrix CPU as follows:
CPU Model Intel Pentium Intel Pentium Intel Pentium Intel Pentium Intel Pentium Intel Pentium Intel Pentium Intel Pentium AMD-K5-PR133 AMD-K5-PR120 AMD-K5-PR100 AMD-K5-PR90 AMD-K5-PR75 *Cyrix 166+ Freq. 200MHz 166MHz 150MHz 133MHz 120MHz 100MHz 90MHz 75MHz 100MHz 90MHz 100MHz 90MHz 75MHz 133MHz Ratio 3.0x 2.5x 2.5x 2.0x 2.0x 1.5x 1.5x 1.5x 1.5x 1.5x 1.5x 1.5x 1.5x 2.0x BUS Freq. 66MHz 66MHz 60MHz 66MHz 60MHz 66MHz 60MHz 50MHz 66MHz 60MHz 66MHz 60MHz 50MHz 66MHz (BUS Freq.) FS2 FS1 FS0 [2-3] [2-3] [1-2] [2-3] [2-3] [1-2] [2-3] [2-3] [2-3] [2-3] [2-3] [1-2] [2-3] [2-3] [2-3] [2-3] [2-3] [1-2] [2-3] [2-3] [2-3] [2-3] [1-2] [2-3] [2-3] [2-3] [2-3] [2-3] [2-3] [2-3] [2-3] [2-3] [2-3] [1-2] [1-2] [2-3] [1-2] [2-3] [2-3] (Freq. Ratio) BF1 BF0 [2-3] [1-2] [2-3] [2-3] [2-3] [2-3] [1-2] [2-3] [1-2] [2-3] [1-2] [1-2] [1-2] [1-2] [1-2] [1-2] [1-2] [1-2] [1-2] [1-2] [1-2] [1-2] [1-2] [1-2] [1-2] [1-2]
*NOTE: Only Cyrix Revision 2.7 or later is supported on this motherboard. See next page for revision identification. Bootup screen will show 6x86-P166+ with the Cyrix 166+ installed on this motherboard.

3 Intel P54C Intel P55C Cyrix M1
1.5 x 2.0 x 3.0 x 2.5 x 3.5 x 2.0 x 3.0 x 2.5 x 3.0 x 2.0 x 3.0 x 2.0 x CPU : BUS Frequency Ratio

[2-3] [2-3] [1-2]

[1-2] [2-3]
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.
8. Voltage Regulator Output Selection (VID0, 1, 2) These jumpers set the voltage supplied to the CPU. Current Intel CPU's marked "Pentium" has only a Single Power Plane and uses the standard 3.38 volts (STD) or 3.5 volts (VRE). Currently Intels new Pentium P55C MMX 200MHz with Dual Power Planes is supported at 2.8Volts. The voltage regulators will automatically detect and switch between Single Power Plane and Dual Power Planes. III. INSTALLATION (System Memory) 19
Intel P54C Pentium Intel P55C Pentium MMX (150-200MHz) (75-200MHz)
AMD-K5 Cyrix 6x86 166+ (PR75-133MHz) Rev2.7 (133MHz)
Type AMD K5 AMD K5 P55C AMD K5 (Reserved) P54C/CS P54C/CS
Setting AMD 3 AMD 1 P55C AMD 2 (Reserved) STD VRE
Voltage 2.5V 2.7V 2.8V 2.9V 3.1V 3.4V 3.5V
VID2 [1-2] [1-2] [2-3] [1-2] [1-2] [2-3] [1-2]

VID0 VID1 VID2

VID1 [2-3] [1-2] [2-3] [2-3] [1-2] [1-2] [1-2]
VID0 [1-2] [1-2] [2-3] [2-3] [2-3] [2-3] [2-3]

2.5Volt

3 2.7Volt 2.8Volt

3 2.9Volt

3 3.5Volt
3.1Volt 3.4Volt Voltage Regulator Output Selection
(This page was intentionally left blank)

2. System Memory (DIMM)

This motherboard has three sockets to support 3.3Volt (power level) Unbuffered Synchronous DRAMs (SDRAM) DIMMs of either 8, 16, or 32, 64, or 128MB. Maximum memory of DIMMs must be 256MB or less.
IMPORTANT: Memory speed setup is required through "Auto Configuration" in BIOS Chipset Setup of the BIOS SOFTWARE.
Install memory in any combination as follows:
DIMM Type 168-pin DIMM Memory Modules Socket 1 SDRAM 8MB, 16MB, 32MB SDRAM 64MB, 128MB - Slot 3 must be empty Socket 2 SDRAM 8MB, 16MB, 32MB SDRAM 64MB, 128MB - Slot 3 must be empty Socket 3 SDRAM 8MB, 16MB, 32MB - Slot 1 or 2 must not have 64 or 128MB SDRAM Total System Memory (Max 256MB) Total Memory x1
NOTE: Maximum memory size is 256MB total for all sockets. Socket 3 will not support 64MB or 128MB DIMMs with 64Mbit SDRAM cells. If Socket 1 and/or Socket 2 has 64MB or 128MB DIMMs with 64Mbit SDRAM cells, Socket 3 must be empty.
DIMM Memory Installation Procedures:
Insert the module(s) as shown. Because the number of pins are different on either side of the breaks, the module will only fit in the orientation as shown. DRAM SIMM modules have the same pin contact on both sides. SDRAM DIMM modules have different pint contact on each side and therefore have a higher pin density.

88 Pins

60 Pins 20 Pins
III. INSTALLATION (System Memory) 22
168 Pin DIMM Memory Sockets
The Dual Inline Memory Module (DIMM) memory modules must be 3.3Volt Unbuffered Synchronous DRAM (SDRAM) or Extended Data Output (EDO). You can identify the type of DIMM module by the illustration below:
DRAM Key Position Unbuffered RFU Buffered
Voltage Key Position 5.0V Reserved 3.3V
168-PIN DRAM DIMM Notch Key Definitions
The notch on the DIMM module will shift between left, center, or right to identify the type and also to prevent the wrong type to be inserted into the DIMM slot on the motherboard. You must ask your retailer for the specifications before purchasing. Four clock signals are supported on this motherboard.
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. With the added weight of the CPU fan, no force is required to insert the CPU. Once completely inserted, hold down on the fan and close the socket's lever. IMPORTANT: You must set jumpers for "CPU to BUS Frequency Ratio" and jumpers for "BUS Frequency Selection" depending on the CPU that you install.

Lever Lock

White Dot
ZIF Socket 7 with Pentium Processor

III. INSTALLATION (CPU)

4. Expansion Cards
WARNING: Make sure that you unplug your power supply when adding or removing expansion cards or other system components. Failure to do so may cause severe damage to both your motherboard and expansion cards.

Expansion Card Installation Procedure:
1. Read your expansion card documentation on any hardware and software settings that may be required to setup your specific card. 2. Set any necessary jumpers on your expansion card. 3. Remove your computer system's cover. 4. Remove the bracket on the slot you intend to use. Keep the bracket for possible future use. 5. Carefully align the cards connectors and press firmly. 6. Secure the card on the slot with the screw you removed in step 4. 7. Replace the computer system's cover. 8. Setup the BIOS if necessary (such as "IRQ xx Used By ISA: Yes" in PNP AND PCI SETUP) 9. Install the necessary software drivers for your expansion card.
III. INSTALLATION (Expansion Cards) 24
Assigning IRQs for Expansion Cards
Some expansion cards need to use an IRQ to operate. Generally an IRQ must be exclusively assigned to one use. In an standard design there are 16 IRQs available but most of them are already in use by parts of the system which leaves 6 free for expansion cards. Both ISA and PCI expansion cards may need to use IRQs. System IRQs are available to cards installed in the ISA expansion bus first, and any remaining IRQs are then used by PCI cards. Currently, there are two types of ISA cards. The original ISA expansion card design, now referred to as Legacy ISA cards, requires that you configure the cards jumpers manually and then install it in any available slot on the ISA bus. You may use Microsoft's Diagnostic (MSD.EXE) utility included in the Windows directory to see a map of your used and free IRQs. For Windows 95 users, the "Control Panel" icon in "My Computer," contains a "System" icon which gives you a "Device Manager" tab. Double clicking on a specific device give you "Resources" tab which shows the Interrupt number and address. Make sure that no two devices use the same IRQs or your computer will experience problems when those two devices are in use at the same time. ASUS TX97-X Users Manual
To simplify this process this motherboard has complied with the Plug and Play (PNP) specification which was developed to allow automatic system configuration whenever a PNP-compliant card is added to the system. For PNP cards, IRQs are assigned automatically from those available. If the system has both Legacy and PNP ISA cards installed, IRQs are assigned to PNP cards from those not used by Legacy cards. The PCI and PNP configuration of the BIOS setup utility can be used to indicate which IRQs are being used by Legacy cards. For older Legacy cards that does not work with the BIOS, you can contact your vendor for an ISA Configuration Utility. An IRQ number is automatically assigned to PCI expansion cards after those used by Legacy and PNP ISA cards. In the PCI bus design, the BIOS automatically assigns an IRQ to a PCI slot that has a card in it that requires an IRQ. To install a PCI card, you need to set something called the INT (interrupt) assignment. Since all the PCI slots on this motherboard use an INTA #, be sure that the jumpers on your PCI cards are set to INT A.

12Volt Chassis, CPU, Power Supply Fan Power
10. Chassis Open Alarm Lead (CHASSIS) This lead is for an open chassis monitor. A high level signal to the CHASSIS lead will indicate to the system that the chassis has been opened.

+5V GND CHASSIS

Chassis open alarm lead
11. Primary / Secondary IDE connectors (Two 40-pin Block) These connectors support the provided IDE hard disk ribbon cable. After connecting the single end to the board, connect the two plugs at the other end to your hard disk(s). If you install two hard disks, you must configure the second drive to Slave mode by setting its jumper accordingly. Please refer to the documentation of your hard disk for the jumper settings. BIOS now supports SCSI device or IDE CD-ROM bootup (see "HDD Sequence SCSI/IDE First" & "Boot Sequence" in the BIOS Features Setup of the BIOS SOFTWARE) (Pin 20 is removed to prevent inserting in the wrong orientation when using ribbon cables with pin 20 plugged). TIP: You may configure two hard disks to be both Masters using one ribbon cable on the primary IDE connector and another ribbon cable on the secondary IDE connector. You may install one operating system on an IDE drive and another on a SCSI drive and select the boot disk through BIOS Features Setup. III. INSTALLATION (Connectors) 30
NOTE: Connect the Red stripe to Pin 1 Pin 1 Secondary IDE Connector
IDE (Hard Driver) Connectors
12. IDE activity LED (IDE LED) This connector supplies power to the cabinets IDE activity LED. Read and write activity by devices connected to the Primary or Secondary IDE connectors will cause the LED to light up.
TIP: If the case-mounted LED does not light, try reversing the 2-pin plug.

IDE Activity LED

Primary IDE Connector

IDE_LED

13. Message LED Lead (PANEL) This indicates whether a message has been received from a fax/modem. The LED will remain lit when there is no signal and blink when there is data transfer or waiting in the inbox). 14. SMI Suspend Switch Lead (PANEL) This allows the user to manually place the system into a suspend mode or "Green" mode where system activity will be instantly decreased to save electricity and expand the life of certain components when the system is not in use. This 2-pin connector (see the figure below) connects to the case-mounted suspend switch. If you do not have a switch for the connector, you may use the "Turbo Switch" since it does not have a function. SMI is activated when it detects a short to open moment and therefore leaving it shorted will not cause any problems. May require one or two pushes depending on the position of the switch. Wake-up can be controlled by settings in the BIOS but the keyboard will always allow wakeup (the SMI lead cannot wake-up the system). If you want to use this connector, "Suspend Switch" in the Power Management Setup of the BIOS SOFTWARE section should be on the default setting of Enable. 15. ATX Power Switch / Soft Power Switch (PANEL) The system power is controlled by a momentary switch connected to this lead. Pushing the button once will switch the system between ON and SLEEP. Pushing the switch while in the ON mode for more than 4 seconds will turn the system off. The system power LED shows the status of the system's power. 16. Reset Switch Lead (PANEL) This 2-pin connector connects to the case-mounted reset switch for rebooting your computer without having to turn off your power switch This is a preferred method of rebooting in order to prolong the life of the system's power supply. 17. Keyboard Lock Switch Lead & System Power LED (PANEL) This 5-pin connector connects to the case-mounted keyboard lock switch for locking the keyboard and also to connect the system power LED. The system power LED lights when the system is powered on and blinks in sleep mode. 18. Speaker Connector (PANEL) This 4-pin connector connects to the case-mounted speaker.

IV. BIOS (Flash Memory Writer) 36

6. BIOS Setup

The motherboard supports two programmable Flash ROM chips: 5 Volt and 12 Volt. Either of these memory chips can be updated when BIOS upgrades are released. Use the Flash Memory Writer utility to download the new BIOS file into the ROM chip as described in detail in this section. All computer motherboards provide a Setup utility program for specifying the system configuration and settings. If your motherboard came in a computer system, the proper configuration entries may have already been made. If so, invoke the Setup utility, as described later, and take note of the configuration settings for future reference; in particular, the hard disk specifications. If you are installing the motherboard, reconfiguring your system or you receive a Run Setup message, you will need to enter new setup information. This section describes how to configure your system using this utility. The BIOS ROM of the system stores the Setup utility. When you turn on the computer, the system provides you with the opportunity to run this program. This appears during the Power-On Self Test (POST). Press the <Delete> key to call up the Setup utility. If you are a little bit late pressing the mentioned key(s), POST will continue with its test routines, thus preventing you from calling up Setup. If you still need to call Setup, reset the system by simultaneously pressing the <Ctrl>, <Alt> and <Delete> keys, or by pushing the Reset button on the system case. You can also restart by turning the system off and then back on again. But do so only if the first two methods fail. When you invoke Setup, the CMOS SETUP UTILITY main program screen will appear with the following options:

IV. BIOS (BIOS Setup)

Load Defaults
The Load BIOS Defaults option loads the minimized settings for troubleshooting. Load Setup Defaults, on the other hand, is for loading optimized defaults for regular use. Choosing defaults at this level, will modify all applicable settings. A section at the bottom of the above screen displays the control keys for this screen. Take note of these keys and their respective uses. Another section just below the control keys section displays information on the currently highlighted item in the list.

IV. BIOS (Standard CMOS)

For IDE hard disk drive setup, you can: Use the Auto setting for detection during bootup. Use the IDE HDD AUTO DETECTION in the main menu to automatically enter the drive specifications. Enter the specifications yourself manually by using the User option. The entries for specifying the hard disk type include CYLS (number of cylinders), HEAD (number of read/write heads), PRECOMP (write precompensation), LANDZ (landing zone), SECTOR (number of sectors) and MODE. The SIZE field automatically adjusts according to the configuration you specify. The documentation that comes with your hard disk should provide you with the information regarding the drive specifications. The MODE entry is for IDE hard disks only, and can be ignored for MFM and ESDI drives. This entry provides three options: Normal, Large, LBA, or Auto (see below). Set MODE to the Normal for IDE hard disk drives smaller than 528MB; set it to LBA for drives over 528MB that support Logical Block Addressing (LBA) to allow larger IDE hard disks; set it to Large for drives over 528MB that do not support LBA. Large type of drive can only be used with MS-DOS and is very uncommon. Most IDE drives over 528MB support the LBA mode.
Auto detection of hard disks on bootup For each field: Primary Master, Primary Slave, Secondary Master, and Secondary Slave, you can select Auto under the TYPE and MODE fields. This will enable auto detection of your IDE drives during bootup. This will allow you to change your hard drives (with the power off) and then power on without having to reconfigure your hard drive type. If you use older hard drives which do not support this feature, then you must configure the hard drive in the standard method as described above by the "User" option.
IV. BIOS (Standard CMOS) 40
NOTE: After the IDE hard disk drive information has been entered into BIOS, new IDE hard disk drives must be partitioned (such as with FDISK) and then formatted before data can be read from and write on. Primary IDE hard disk drives must have its partition set to active (also possible with FDISK).
NOTE: SETUP Defaults are noted in parenthesis next to each function heading.
Drive A / Drive B (None) These fields record the types of floppy disk drives installed in your system. The available options for drives A and B are: 360KB, 5.25 in.; 1.2MB, 5.25 in.; 720KB, 3.5 in.; 1.44MB, 3.5 in.; 2.88MB, 3.5 in.; None To enter the configuration value for a particular drive, highlight its corresponding field and then select the drive type using the left- or right-arrow key. Floppy 3 Mode Support (Disabled) This is the Japanese standard floppy drive. The standard stores 1.2MB in a 3.5" diskette. This is normally disabled but you may choose from either: Drive A, Drive B, Both, and Disabled Video (EGA/VGA) Set this field to the type of video display card installed in your system. The options are: EGA/VGA, Mono (for Hercules or MDA), CGA 40, and CGA 80 If you are using a VGA or any higher resolution card, choose the EGA/VGA option. Halt On (All Errors) This field determines which types of errors will cause the system to halt. Choose from : All Errors, No Errors, All, But Keyboard, All, But Diskette, and All, But Disk/ Key IV. BIOS (Standard CMOS) ASUS TX97-X User's Manual 41

BIOS Features Setup

This BIOS Features Setup option consists of configuration entries that allow you to improve your system performance, or let you set up some system features according to your preference. Some entries here are required by the motherboards design to remain in their default settings.
A section at the lower right of the screen displays the control keys you can use. Take note of these keys and their respective uses. If you need information on a particular entry, highlight it and then press the <F1> key. A pop-up help menu will appear to provide you with the information you need. To load the last set values, press the <F5> key. <F6> and <F7> load the BIOS default values and Setup default values, respectively. NOTE: SETUP Defaults are noted in parenthesis next to each function heading.
IV. BIOS (BIOS Features) 42
Details of BIOS Features Setup
Virus Warning (Disabled) This field protects the boot sector and partition table of your hard disk against accidental modifications. Any attempt to write to them will cause the system to halt and display a warning message. If this occurs, you can either allow the operation to continue or use a bootable virus-free floppy disk to reboot and investigate your system. This setting is recommended because conflicts with new operating systems. Installation of new operating systems require that you disable this to prevent write errors. External Cache (Enabled) These fields allow you to Enable or Disable the CPUs Level 2 secondary cache. Caching allows better performance.
Quick Power On Self Test (Enabled) This field speeds up the Power-On Self Test (POST) routine by skipping retesting a second, third, and forth time. Setup default setting for this field is Enabled. A complete test of the system is done on each test. HDD Sequence SCSI/IDE First (IDE) When using both SCSI and IDE hard disk drives, IDE is always the boot disk using drive letter C (default setting of IDE). This new feature allows a SCSI hard disk drive to be the boot disk when set to SCSI. This allows multiple operating systems to be used on both IDE and SCSI drives or the primary operating system to boot using a SCSI hard disk drive. Boot Sequence (C,A) This field determines which logical drive (not partitions) the system looks first for an operating system. Options are A,CDROM,C; CDROM,C,A; D,A; E,A; F,A; C only, A,C. The setup default setting is to check first the hard disk and then the floppy drive; that is, C, A. Boot Up Floppy Seek (Disabled) When enabled, the BIOS will seek the floppy "A" drive one time. Floppy Disk Access Control (R/W) This allows protection of files from the computer system to be copied to floppy drives by allowing the setting of Read Only to only allow reads from the floppy but not writes. The setup default R/W allows both reads and writes. IDE HDD Block Mode Sectors (HDD MAX) This field enhances hard disk performance by making multi-sector transfers instead of one sector per transfer. Most IDE drives, except older versions, can utilize this feature. Selections are HDD MAX, Disabled 2, 4, 8, 16, and 32. Security Option (System) This field determines when the system prompts for the password. The default setting is System, where the system prompts for the User Password every time you boot up. The other option is Setup, where the system always boots up, and prompts for the Supervisor Password only when the Setup utility is called up. You can specify a password by using the Supervisor Password or User Password option from the main screen as explained later in this section. PS/2 Mouse Function Control (Auto) The default of Auto allows the system to detect a PS/2 Mouse on bootup. If detected, IRQ12 will be used for the PS/2 Mouse. IRQ12 will be reserved for expansion cards if a PS/2 Mouse is not detected. Disabled will reserve IRQ12 for expansion cards and therefore the PS/2 Mouse will not function.

IV. BIOS (BIOS Features)

PCI/VGA Palette Snoop (Disabled) This function controls how VGA compatible and graphic devices handle accesses to VGA palette registers. The active VGA device always responds to a read of color palette, wihile either the VGA or graphic agent will be programmed to respond to write transactions to the color palette and the other will be to snoop it. Some display cards that are nonstandard VGA such as graphics accelerators or MPEG Video Cards may not show colors properly. The setting Enabled should correct this problem. Otherwise leave this on the setup default setting of Disabled. OS/2 Onboard Memory > 64M (Disabled) When using OS/2 operating systems with installed DRAM of greater than 64MB, you need to Enable this option otherwise leave this on the setup default of Disabled.... Video ROM BIOS Shadow (Enabled) This field allows you to change the video BIOS location from ROM to RAM. Relocating to RAM enhances system performance, as information access is faster than the ROM. C8000-CBFFF to DC000-DFFFF (Disabled) These fields are used for shadowing other expansion card ROMs. If you install other expansion cards with ROMs on them, you will need to know which addresses the ROMs use to shadow them specifically. Shadowing a ROM reduces the memory available between 640KB and 1024KB by the amount used for this purpose. Boot Up NumLock Status (On) This field enables users to activate the Number Lock function upon system boot. Otherwise choose Off. Boot Up System Speed (High) This has no function and should be left on the setup default. Typematic Rate Setting (Disabled) When Enabled, you can set the two typematic controls listed next. Setup default setting is Disabled. Typematic Rate (Chars/Sec) This field controls the speed at which the system registers repeated keystrokes. Options range from 6 to 30 characters per second. Setup default setting is 6; other settings are 8, 10, 12, 15, 20, 24, and 30. Typematic Delay (Msec) (250) This field sets the time interval for displaying the first and second characters. Four delay rate options are available: 250, 500, 750, and 1000.
IV. BIOS (BIOS Features) 44

Chipset Features Setup

This Chipset Features Setup option controls the configuration of the boards chipset. Control keys for this screen are the same as for the previous screen.
Details of Chipset Features Setup
Auto Configuration (60ns DRAM) The default setting of 60ns DRAM sets the optimal timings for items 2 through 9 for 60ns DRAM modules. If you are using 70ns DRAM modules, you must change this item to 70ns DRAM. See section III for DRAM installation information. SDRAM CAS# Latency (3T) If you use ASUS SDRAM DIMM modules, you can set this to 2T for better performance, otherwise leave on default or check with your vendor for DIMM specs. SDRAM Speculative Read (Disabled) If Enabled, the CPU will issue predict commands to access the DRAM, if a miss occurs, the CPU will cancel this command. Some operating systems under certain situations have a problem utilizing this feature so it is normally Disabled. Passive Release (Enabled) This is a mechanism that allows concurrency of ISA/EISA cycles and CPU-to-PCI cycles. When this feature is enabled, the TXC will be possible to re-arbitrate PCI bus and allow the CPU to access PCI even when the PCEB has been granted the bus.

Notes:

A heading, *** BIOS Auto Detect *** appears on the right for each menu item on the left side that has been auto detected by the system BIOS. A heading, *** User Modified *** will appear on the right for menu items that has been modified by the user.
V. SOFTWARE (Using DMI Utility)

Save MIFD

You can save the MIFD (normally only saved to flash ROM) to a file by entering the drive and path here. If you want to cancel save, you may press ESC and a message Bad File Name appears here to show it was not saved. Load MIFD
You can load the disk file to memory by entering a drive and path and file name here. Load BIOS Defaults V. SOFTWARE (Using DMI Utility) You can load the BIOS defaults from a MIFD file and can clear all user modified and added data. You must reboot your computer in order for the defaults to be saved back into the Flash BIOS. 60 ASUS TX97-X User's Manual
VI. ASUS PCI-SC200 SCSI Card
VI. ASUS PCI-SC200 (SCSI BIOS) 61

SCSI BIOS and Drivers

Aside from the system BIOS, the Flash memory chip on the motherboard also contains the SCSI BIOS. This SCSI BIOS works in conjunction with the optional ASUS PCI-SC200 SCSI controller card to provide a complete PCI Fast SCSI-2 interface. All SCSI devices you install to your system require driver software to function. The SCSI BIOS directly supports SCSI hard disks under the DOS, Windows and OS/2 environments. It also uses device drivers from the DOS floppy disk included in the PCI-SC200 controller card package to support hard disks and other SCSI devices working under DOS, Windows, Windows NT, Novell NetWare and OS/2. These drivers provide higher performance than the direct BIOS support. To use these drivers, you must install them into your system and add them to your system configuration files. Driver support for SCSI devices used with SCO UNIX is also provided. These drivers are included in the second SCO UNIX floppy disk. Windows 95 support is also available using the device drivers included within the Windows software. The ASUS PCI-SC200 is a Plug and Play adapter that is auto detected by BIOS and current operating systems that support Plug and Play features. For information about these drivers and their usage, see the Readme files included in the driver packages. You can print out the contents of these files using any text editor program. The next few pages will instruct you on the installation of the ASUS PCI-SC200 Fast SCSI Card.
The ASUS PCI-SC200 SCSI Interface Card
Your motherboard may have come with an optional SCSI (Small Computer System Interface) controller card, the PCI-SC200. The card is also available separately. This card works with the SCSI BIOS on the motherboard. Together, they provide a complete PCI Fast SCSI-2 interface. With the card installed in your system you can connect SCSI devices installed in your system case to the internal connector on the card. You also have the additional option of connecting external SCSI devices to the external SCSI-2 connector on the card. If you get the ASUS PCI-SC200 later on as an option, you will need to install it yourself. The setup procedure is explained here. VI. ASUS PCI-SC200 (Setup) 62

Declaration of Conformity
We, Manufacturer/Importer

(full address)

ASUS COMPUTER GmbH HARKORT STR. RATINGEN, BRD. GERMANY
( 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

declare that the product

0 EN 55011
Limits and methods of measurement of radio disturbance characteristics of industrial, scientific and medical (ISM) high frequency equipment Limits and methods of measurement of radio disturbance characteristics of broadcast receivers and associated equipment Limits and methods of measurement of radio disturbance characteristics of household electrical appliances, portable tools and similar electrical apparatus Limits and methods of measurement of radio disturbance characteristics of fluorescent lamps and luminaries Immunity from radio interference of broadcast receivers and associated equipment Limits and methods of measurement of radio disturbance characteristics of information technology equipment Cabled distribution systems; Equipment for receiving and/or distribution from sound and television signals

EN 61000-3-2*

i EN60555-2
Disturbances in supply systems caused by household appliances and similar electrical equipment Harmonics

0 EN55013

EN61 000-3-3*

I&I EN60555-3

Disturbances in supply systems caused by household appliances and similar electrical equipment Voltage fluctuations

[7 EN 55014

EN 50081-I EN 50082-l
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

0 EN 55015

0 EN 55081-2

0 EN 55020

0 EN 55082-2
Generic immunity standard Part 2: Industrial environment

q EN 55022

1 part part DIN VDE 0855

0 ENV 55104

Immunity requirements for household appliances tools and similar apparatus

0 EN 50091- 2

EMC requirements for uninterruptible power systems (UPS)

CE marking

(EC conformity marking)
The manufacturer also declares the conformity of above mentioned product with the actual required safety standards in accordance with LVD 73123 EEC j---J EN 60065
Safety requirements for mains operated electronic and related apparatus for household and similar general use Safety of household and similar electrical appliances 0 EN 60950 Safety for information technology equrpr nent Including electrical bustness equipment General and Safety requirements for uninterruptible power systems (UPS)

0 EN 60335

0 EN 50091-I
Manufacturer/Importer Signature Date : Feb. 22, 1997 Name

Richard Lee

ASIJS TX97-X

Pentium@ ATX Motherboard

USERS MANUAL

USERS 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 language 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, incidental, 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 l l l l l

Intel, LANDesk, and Pentium are registered trademarks of Intel Corporation. IBM is a registered trademark of International Business Machines Corp. Symbios is a registered trademark of Symbios Logic Corporation. Windows and MS-DOS are registered trademarks of Microsoft Corporation. Sound Blaster AWE32 and SB 16 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 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.
ASUS TX979X Product Name: Manual Revision: 2.05 April 1997 Release Date:

ASUS TX97-X Users Manual

ASUS CONTACT INFORMATION

ASUSTeK COMPUTER INC.

Marketing Info:
Address: Telephone: Fax: Email: 150 Li-Te Road, Peitou, Taipei, Taiwan, ROC 886-2-894-3447 886-2-894-3449 info@asus.com.tw

Technical Support:

Fax: BBS: Email: www: Gopher: FTP: 886-2-895-9254 886-2-896-4667 tsd@asus.com.tw http:/lwww.asus.com.tw/ gopher.asus.com.tw ftp.asus.com.tw/pub/ASUS
ASUS COMPUTER INTERNATIONAL
Address: Telephone: Fax: Email: 721 Charcot Avenue, San Jose, CA 95 131, USA l-408-474-0567 I-408-474-0568 info-usa@asus.com.tw
BBS: Email: l-408-474-0555 tsd-usa@asus.com.tw

ASUS COMPUTER GmbH

Address: Telephone: Fax: Email: Harkort Str. 25,40880 Ratingen, BRD, Germany 49-2 102-49-2 102-442066 info-ger@asus.com.tw
BBS: Email: 49-2 102-448690 tsd-ger@asus.com.tw

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).. 4. Expansion Cards... Expansion Card Installation Procedure:.. Assigning IRQs for Expansion Cards.. Assigning DMA Channels for ISA Cards.. 25

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 users 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.

I. INTRODUCTION

How this manual is organized
This manual is divided into the following sections: Introduction: I. II. Features: III. Installation: IV. BIOS Setup: V. DMI Utility: VI. ASUS PCLSC200: Manual information and checklist Information and specifications concerning this product Instructions on setting up the motherboard BIOS software setup information BIOS supported Desktop Management Interface 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 IZl lZl lZl The ASUS TX97-X motherboard 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 Readme files for descriptions and use of the files Technical Support Form

l l l l

lZl 0 0
This users manual.Optional infrared module Optional ASUS PCI-SC200 Fast-SCSI card

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: Intel Chipset: Features Imels 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 external 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 Enhanced IDE devices. This controller supports PI0 Modes 3 and 4 and Bus Master 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.

[l-2] [2-31

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.
Compatible lBM/Cyrix CPU lcientification
The only Cyrix CPU that is supported on this motherboard is labeled Cyrix 6x86 PI 66+ 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 higher.
6. Voltage Regulator Output Selection (VIDO, 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.
Intel PS4C Pentiurn (752OOMHz)
Intel PSSC Pentiurn MMX SO-200MH1)

AMD-KS (PR75 I33MHr)

AMDK6 (PR 166-233MHz)
Cyrix 6xX6 166+ Rev2.7 ( 133MHr)
CPU Manufacturer CPU Tvge Intel/AMD/IBM/Cryix P54C/CS/KYM 1 P54C/CS/K5 InteUAMD AMD K6-PR233 K6-PR 166,200 AMD P55C-MMXlM2 Intel/IBM/Cyrix
Voltaye 3SV(VRE) 3.4V(STD) 3.2V 2.9V 2.8V
VID2 - - VIDl VIDO [l-2] [l-2] 12-31 12-31 [ l - 2 ) 12-31 12-31 krr:l, !] [ l-21 [ l-21 12-31 2-31 12-31 12-31 2-31

(3.5 Volts)

(3.4 Volts)

(3.2 Volts)

Voltage Regulator Output Selection

K6- 166/200 (2.9 Volts)

P55UM2 (2.8Volts)

2. System Memory (DIMM)

Only Dual Inline Memory Modules (DIMMs) can be used with this motherboard. Two sockets are available for 3.3Volt (power level) Unbuffered Synchronous DRAMS (SDRAM) or ED0 DRAM of either 8,16,32,64, or 128MB to form a memory size between 8MB to 256MB. One side (with memory chips) of the DIMM module takes up one Row on the motherboard.
IMPORTANT: Memory speed setup is required through Auto Configuration in BIOS Chipset Setup of the BIOS SOFTWARE. Install memory in any combination as follows:
DIMM Socket 1 (Rows O&l) VP e 16%pin DIMM Memory Modules xl Total Memory
SDRAM SMB, 16MB, 32MB SDRAM 64MB, 128MB - but (Socket 3 must be empty) ED0 8,16,32,64,12SMB SDRAM SMB, 16MB, 32MB SDRAM 64MB, 128MB - but (Socket 3 must be empty) ED0 8,16,32,64,128MB

Socket 2 (Rows 2&3)

Socket SDRAM 8MB, 16MB, 32MB - but Socket 1 or 2 must not have (Rows 4&5) 64MB or 128MB SDRAM l ED0 8,16,32,64,128MB i Total System Memory (Max 256MB)
NOTE: Maximum memory size is 256MB total for this motherboard. Socket 3 will not support 64MB or 128MB DIMMs with 64Mbit SDRAM cells. If Socket 1 and/or Socket 2 has 64MB or 128MB DIMMs with 64Mbit SDRAM cells, Socket 3 must be empty.
D/MM Memory Installation Procedures:

Lever Lock

ZIF Socket 7 with Pentium Processor

4. Expansion Cards

WARNING: Make sure that you unplug your power supply when adding or removing expansion cards or other system components. Failure to do so may cause severe damage to both your motherboard and expansion cards.
Expansion Card Installation Procedure:
1. Read your expansion card documentation on any hardware and software settings that may be required to setup your specific card. 2. Set any necessary jumpers on your expansion card. 3. Remove your computer systems cover. 4. Remove the bracket on the slot you intend to use. Keep the bracket for possible future use. Carefully align the cards connectors and press firmly. Secure the card on the slot with the screw you removed in step 4. Replace the computer systems cover. Setup the BIOS if necessary (such as IRQ xx Used By ISA: Yes in PNPAND PC1 SETUP) 9. Install the necessary software drivers for your expansion card.
Assigning IRQs for Expansion Cards
Some expansion cards need to use an IRQ to operate. Generally an IRQ must be exclusively assigned to one use. In an standard design there are 16IRQs available but most of them are already in use by parts of the system which leaves 6 free for expansion cards. Both ISA and PC1 expansion cards may need to use IRQs. System IRQs are available to cards installed in the ISA expansion bus first, and any remaining IRQs are then used by PC1 cards. Currently, there are two types of ISA cards. The original ISA expansion card design, now referred to as Legacy ISA cards, requires that you configure the cards jumpers manually and then install it in any available slot on the ISA bus. You may use Microsofts Diagnostic (MSD.EXE) utility included in the Windows directory to see a map of your used and free IRQs. For Windows 95 users, the Control Panel icon in My Computer, contains a System icon which gives you a Device Manager tab. Double clicking on a specific device give you Resources tab which shows the Interrupt number and address. Make sure that no two devices use the same IRQs or your computer will experience problems when those two devices are in use at the same time. 24 ASUS TX97-X Users Manual

III, INSTALLATION

To simplify this process this motherboard has complied with the Plug and Play (PNP) specification which was developed to allow automatic system configuration whenever a PNP-compliant card is added to the system. For PNP cards, IRQs are assigned automatically from those available. If the system has both Legacy and PNP ISA cards installed, IRQs are assigned to PNP cards from those not used by Legacy cards. The PC1 and PNP configuration of the BIOS setup utility can be used to indicate which IRQs are being used by Legacy cards. For older Legacy cards that does not work with the BIOS, you can contact your vendor for an ISA Configuration Utility. An IRQ number is automatically assigned to PC1 expansion cards after those used by Legacy and PNP ISA cards. In the PC1 bus design, the BIOS automatically assigns an IRQ to a PC1 slot that has a card in it that requires an IRQ. To install a PC1 card, you need to set something called the INT (interrupt) assignment. Since all the PC1 slots on this motherboard use an INTA #, be sure that the jumpers on your PC1 cards are set to INT A.
Assigning DMA Channels for ISA Cards
Some ISA cards, both Legacy and PNP may also need to use a DMA (Direct Memory Access) channel. DMA assignments for this motherboard are handled the same way as the IRQ assignment process described above. You can select a DMA channel in the PC1 and PNP configuration section of the BIOS Setup utility. IMPORTANT: Choose Yes for those IRQs and DMAs you wish to reserve for Legacy (Non-PnP) ISA expansion cards in IRQ xx Used By ISA and DMA x Used By ISA of the PNP and PC1 Setup in the BIOS SOFTWARE section, otherwise conflicts may occur.

5. External Connectors

WARNING: Some pins are used for connectors or power sources. These are clearly separated from jumpers in Map of the Motherboard. Placing jumper caps over these will cause damage to your motherboard. IMPORTANT: Ribbon cables should always be connected with the red stripe on the Pin 1 side of the connector. The four corners of the connectors are labeled on the motherboard. Pin 1 is the side closest to the power connector on hard drives and floppy drives. IDE ribbon cable must be less than 18in. (46cm), with the second drive connector no more than 6in. (15cm) from the first connector. PS/2 Keyboard Connector (6-pin Female) This connection is for a standard keyboard using an PS/2 plug (mini DIN). This connector will not allow standard AT size (large DIN) keyboard plugs. You may use a DIN to mini DIN adapter on standard AT keyboards.

PSIi Keyboard (6-pin Female)
PS/2 Mouse Connector (6-pin Female) The system will direct IRQ12 to the PS/2 mouse if one is detected. If not detected, expansion cards can use IRQ12. See PS/2 Mouse Control in BIOS Features Setup of the BIOS SOFTWARE.
PS/2 Mouse (6-pin Female)
3. Parallel Printer Connector (25pin Female) You can enable the parallel port and choose the IRQ through Onboard Parallel Port in Chipset Features Setup of the BIOS SOFTWARE. NOTE: Serial printers must be connected to the serial port.
Parallel (Printer) P,ort (25pin Female)
4. Serial Port COMl and COM2 Connectors (Two 9-pin Male) The two serial ports can be used for pointing devices or other serial devices. See Onboard Serial Port in Chipset Features Setup of the BIOS SOFTWAKE.
COM 2 COM 1 Serial Ports (g-pin Male)
5. Universal Serial BUS Ports 1 & 2 (Two 4-pin Female Sockets) Two USB ports are available for connecting USB devices.
Univeral Serial Bus (USB) 2
6. Floppy drive connector (34-pin block ) This connector supports the provided floppy drive ribbon cable. After connecting the single end to the board, connect the two plugs on the other end to the floppy drives. (Pin 5 is removed to prevent inserting in the wrong orientation when using ribbon cables with pin 5 plugged).
NOTE: Connect the Red stripe to Pin

Floppy Drive Connector

7. Chassis Fan, CPU Cooling Fan, & Power Supply Fan Connectors (FANPWR) These connectors support cooling fans of SOOmAMP (6WATT) or less. Orientate the fans so that the heat sink fins allow airflow to go across the onboard heat sink(s) instead of the expansion slots. Depending on the fan manufacturer, the wiring and plug may be different. The red wire should be positive, while the black should be ground. Connect the fans plug to the board taking into consideration the polarity of the this connector. WARNING: The CPU and/or motherboard will overheat if there is no airflow across the CPU and onboard heatsinks. Damage may occur to the motherboard and/or the CPU fan if these pins are incorrectly used. These are not jumpers, do not place jumper caps over these pins.
8. Primary / Secondary IDE connectors (Two 40-pin Block) These connectors support the provided IDE hard disk ribbon cable. After connecting the single end to the board, connect the two plugs at the other end to your hard disk(s). If you install two hard disks, you must configure the second drive to Slave mode by setting its jumper accordingly. Please refer to the documentation of your hard disk for the jumper settings. BIOS now supports SCSI device or IDE CD-ROM bootup (see HDD Sequence SCSI/IDE First & Boot Sequence in the BIOS Features Setup of the BIOS SOFTWARE) (Pin 20 is removed to prevent inserting in the wrong orientation when using ribbon cables with pin 20 plugged). TIP: You may configure two hard disks to be both Masters using one ribbon cable on the primary IDE connector and another ribbon cable on the secondary IDE connector. You may install one operating system on an IDE drive and another on a SCSI drive and select the boot disk through BIOS Features Setup.

IV. BIOS SOFTWARE

Support Software
FILELIST.TXT - View this file to see the files included in the support software. PFLASH.EXE - This is the Flash Memory Writer utility that updates the BIOS by uploading a new BIOS file to the programmable flash ROM chip on the motherboard. To determine the BIOS version, check the last four numbers of the code displayed on the upper left-hand corner of your screen during bootup. Larger numbers represent a newer BIOS file. NOTE: A binary BIOS file is no longer included with the support software. Save the motherboards BIOS file to a floppy diskette as soon as your system is operational. See Flash Memory Writer Utility in this section to Save Current BIOS to File.
Flash Memory Writer Utility
ASUSTeK PNP BIOS FLASH MEMORY WRITER V1.5 Copyright (C) 1995, ASUSTeK COMPUTER Inc. Flash Type -- SST 29EEOlO Current BIOS Revlslon: #IOlAO-xxxx Choose orie of the following: 1. Save Current BIOS To File 2. Update BIOS Main Block From File 3. Advanred Features Enter Cho:zc:

Press ESC To Exit

xxxx denotes the current BIOS version stored in the Flash EPROM
IMPORTANT: Flash Type may also be INTEL 28FOOlBXT. If unknown is shown after Flash type --, then this ROM chip is not programmable or not supported with the PnP BIOS and therefore cannot be programmed by the Flash Memory Writer.

Main Menu

1. Save Current BIOS to File (Perform as soon as system is operational) This option allows you to copy the contents of the Flash memory chip onto a diskette. This gives you a backup copy of the original motherboard BIOS in case you need to reinstall it. Create a bootable system floppy diskette by typing [FORMAT A:/S] from the DOS environment without creating AUTOEXEC.BAT and CONFIG.SYS files, then save the PFLASH.EXE and the BIOS to the floppy diskette. ASUS TX97-X Users Manual
2. Update BIOS Main Block from File This option updates the BIOS from a file on the disk. This can either be a new file \ or a backup file created by the Save Current BIOS to File option. This will not update the Boot Block if the Boot Block is different. You will be prompted with the following if advanced features if necessary. Boot Block of New BIOS is different from old one !!! Please Use 'Advanced Feature' to flash whole bios !!! 3. Advanced Features Selecting this option brings up the Advanced Features screen for clearing the PnP configuration record and updating the motherboard BIOS.

AdvancedFeatures Menu

Advanced Features
1. Clear PNP ESCD Parameter Block This option erases the Plug-and-Play (PnP) configuration record. 2. Update BIOS Including Boot Block and ESCD This option updates the Boot Block, the motherboard BIOS and the PnP ESCD Parameter Block from a new BIOS file. NOTE: Update BIOS Main Block from File and Update BIOS Including Boot Block and ESCD requires that the system is running in real mode. This utility will not operate if the system is under protected mode or virtual mode. You should boot from a system floppy diskette without AUTOEXEC.BAT and CONFIG.SYS files.
Managing & Updating your Motherboards BIOS
Upon first use of the computer system: 1. Create a bootable system floppy diskette by typing [FORMAT A:/S] from the DOS prompt without creating AUTOEXEC.BAT and CONFIG.SYS files. 2. Copy PFLASH.EXE to your new diskette. 3. Run PFLASH.EXE from your new diskette and select option 1 Save Current BIOS to File. Enter the Current BIOS Revision: for the file name. Updating BIOS procedures (only when necessary): IMPORTANT: Flash type may be SST or INTEL. If unknown is displayed after Flash type --,I then this ROM chip is not programmable or not supported with the PnP BIOS and therefore cannot be programmed by the Flash Memory Writer. 1. Download an updated ASUS BIOS file from the internet (WWW), FTP, or a BBS (Bulletin Board Service) and save to the diskette you created above. See ASUS CONTACT INFORMATION on Page II of the Users Manual for details. 2. Turn off your computer and open the system cabinet to Enable Boot Block Programming jumper as shown in section III of the Users Manual. 3. Boot from the floppy diskette you created above. 4. At the A:\ prompt, type: [PFLASH] and then the <Enter> key. 5. Enter 2 Update BIOS Main Block From File from the Main Menu or option 2 Update BIOS Including Boot Block and ESCD from the Advanced Features Menu if prompted by option 2 of the Main Menu. 6. The program displays a second screen prompting you for the name of the BIOS file. Type in the complete file name and extension of the new BIOS, and then press the <Enter> key. The utility then updates the BIOS file from disk. WARNING: If you encounter problems while updating the new BIOS, DO NOT turn off your system since this might prevent your system from booting up. Just repeat the process, and if the problem still persists, update the original BIOS file you saved to disk above. If the Flash Memory Writer utility was not able to successfully update a complete BIOS file, your system may not be able to boot up. If this happens, your system will need service. 7. After successfully updating the new BIOS file, exit the Flash Memory Writer utility and then turn off your system. Set the jumper back to its default setting of Programming Disabled OY Protected. 8. Turn on your computer and hold down the <Delete> key to enter BIOS setup. You must select Setup Default to affect the new BIOS, then you may set other items from the Main Menu.

6. BIOS Setup

The motherboard supports two programmable Flash ROM chips: 5 Volt and 12 Volt. Either of these memory chips can be updated when BIOS upgrades are released. Use the Flash Memory Writer utility to download the new BIOS file into the ROM chip as described in detail in this section. All computer motherboards provide a Setup utility program for specifying the system configuration and settings. If your motherboard came in a computer system, the proper configuration entries may have already been made. If so, invoke the Setup utility, as described later, and take note of the configuration settings for future reference; in particular, the hard disk specifications. If you are installing the motherboard, reconfiguring your system or you receive a Run Setup message, you will need to enter new setup information. This section describes how to configure your system using this utility. The BIOS ROM of the system stores the Setup utility. When you turn on the computer, the system provides you with the opportunity to run this program. This appears during the Power-On Self Test (POST). Press the <Delete> key to call up the Setup utility. If you are a little bit late pressing the mentioned key(s), POST will continue with its test routines, thus preventing you from calling up Setup. If you still need to call Setup, reset the system by simultaneously pressing the &trl>, <Alt> and <Delete> keys, or by pushing the Reset button on the system case. You can also restart by turning the system off and then back on again. But do so only if the first two methods fail. When you invoke Setup, the CMOS SETUP UTILITY main program screen will appear with the following options:

Load Defaults

The Load BIOS Defaults option loads the minimized settings for troubleshooting. Load Setup Defaults, on the other hand, is for loading optimized defaults for regular use. Choosing defaults at this level, will modify all applicable settings. A section at the bottom of the above screen displays the control keys for this screen. Take note of these keys and their respective uses. Another section just below the control keys section displays information on the currently highlighted item in the list.

For IDE hard disk drive setup, you can: Use the Auto setting for detection during bootup. Use the IDE HDD AUTO DETECTION in the main menu to automatically enter the drive specifications. Enter the specifications yourself manually by using the User option.
The entries for specifying the hard disk type include CYLS (number of cylinders), HEAD (number of read/write heads), PRECOMP (write precompensation), LANDZ (landing zone), SECTOR (number of sectors) and MODE. The SIZE field automatically adjusts according to the configuration you specify. The documentation that comes with your hard disk should provide you with the information regarding the drive specifications. The MODE entry is for IDE hard disks only, and can be ignored for MFM and ESDI drives. This entry provides three options: Normal, Large, LBA, or Auto (see below). Set MODE to the Normal for IDE hard disk drives smaller than 528MB; set it to LBA for drives over 528MB that support Logical Block Addressing (LBA) to allow larger IDE hard disks; set it to Large for drives over 528MB that do not support LBA. Large type of drive can only be used with MS-DOS and is very uncommon. Most IDE drives over 528MB support the LBA mode.
Auto detection of hard disks on bootup For each field: Primary Master, Primary Slave, Secondary Master, and Secondary Slave, you can select Auto under the TYPE and MODE fields. This will enable auto detection of your IDE drives during bootup. This will allow you to change your hard drives (with the power off) and then power on without having to reconfigure your hard drive type. If you use older hard drives which do not support this feature, then you must configure the hard drive in the standard method as described above by the User option.
NOTE: After the IDE hard disk drive information has been entered into BIOS, new IDE hard disk drives must be partitioned (such as with FDISK) and then formatted before data can be read from and write on. Primary IDE hard disk drives must have its partition set to active (also possible with FDISK).
NOTE: SETUP Defaults are noted in parenthesis next to each function heading.
Drive A / Drive B (None) These fields record the types of floppy disk drives installed in your system. The available options for drives A and B are: 360KB, 5.25 in.; I.2MB, 5.25 in.; 720KB, 3.5 in.; 1.44MB, 3.5 in.; 2.@MB, 3.5 in.; None To enter the configuration value for a particular drive, highlight its corresponding field and then select the drive type using the left- or right-arrow key. Floppy 3 Mode Support (Disabled) This is the Japanese standard floppy drive. The standard stores 1.2MB in a 3.5 diskette. This is normally disabled but you may choose from either: Drive A, Drive

SCSI BIOS (Auto)

The default uses Auto settings for the onboard SCSI BIOS (see section VI). If you wish not to use the onboard SCSI BIOS, choose Disuhled

Load BIOS Defaults

This Load BIOS Defaults option allows you to load the troubleshooting default values permanently stored in the BIOS ROM. These default settings are non-optimal and disable all high performance features. To load these default settings, highlight Load BIOS Defaults on the main screen and then press the <Enter> key. The system displays a confirmation message on the screen. Press the <Y> key and then the <Enter> key to confirm. Press the <N> key and then the <Enter> key to abort. This feature does not affect the fields on the Standard CMOS Setup screen.

Load Setup Defaults

This Load Setup Defaults option allows you to load the default values to the system configuration fields. These default values are the optimized configuration settings for the system. To load these default values, highlight Load Setup Defaults on the main screen and then press the <Enter> key. The system displays a confirmation message on the screen. Press the <Y> key and then the <Enter> key to confirm. Press the <N> key and then the <Enter> key to abort. This feature does not affect the fields on the Standard CMOS Setup screen.
Supervisor Password and User Password
These two options set the system passwords. Supervisor Password sets a password that will be used to protect the system and the Setup utility; User Password sets a password that will be used exclusively on the system. By default, the system comes without any passwords. To specify a password, highlight the type you want and then press the <Enter> key. A password prompt appears on the screen. Taking note that the password is case sensitive, and can be up to 8 alphanumeric characters long, type in your password and then press the <Enter> key. The system confirms your password by asking you to type it again. After setting a password, the screen automatically reverts to the main screen.
To implement the password protection, specify in the Security Option field of the BIOS Features Setup screen when the system will prompt for the password. If you want to disable either password, press the <Enter> key instead of entering a new password when the Enter Password prompt appears. A message confirms the password has been disabled.
NOTE: If you forget the password, see CMOS RAM in section III for procedures

on clearing the CMOS.

IDE HDD Auto Detection
This IDE HDD Auto Detection option detects the parameters of an IDE hard disk drive, and automatically enters them into the Standard CMOS Setup screen.

VI. ASUS PCEC200 SCSI Card
Decide whether or not you need to terminate the ASUS PCI-SC200 based on its position in the SCSI chain. Only the devices at each end of the chain need to be terminated. If you have only internal or only external devices connected to the ASUS PCI-SC200, then you must terminate the ASUS PCI-SC200. If you have both internal and external devices connected, you must not terminate the card. See the following example which illustrates this concept.

Termination Required

Termination Required (End Device)

No Termination Required

SCSI ID Numbers
All SCSI devices, including the ASUS PCI-SC200 interface card must have a SCSI identification number that is not in use by any other SCSI device. There are eight possible ID numbers, 0 through 7. The ASUS PCI-SC200 has a fixed SCSI ID of 7. You can connect up to seven SCSI devices to the interface card. You must set a SCSI ID number for each device. SCSI devices vary in how they set the ID number. Some use jumpers, others have some kind of selector switch. Refer to the manual for any device you install for details on how to set its ID number.

ASUS TX970X Users Manual

DECLARATION OF CONFORMITY
Per FCC Part 2 Section 2. 1077(a)
Responsible Party Name: Address: Phone/Fax No: hereby declares that the product
Asus Computer International Charcot Ave., San Jose, CA95131, U.S.A.
(408)474-0567/(408)474-OS68
Product Name: Model Number:

Mother Board TX97-X

Conforms to the following specifications: FCC Part 15, Subpart B, Section 15107(a) and Section 15.109(a), Class B Digital Device Supplementary Information: This device complies with part 15 of the FCC Rules. Operation is sub_ject to the following two conditions: (1) This device may not cause harmful intcrference, and (2) this device must accept any inference received, including interference that may cause undesired operation.
Representative Persons Name: Ivan Ho/ President
Signature:.A!&Date: Feb. 22, 1997

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