ASUS PI-P55TVP4 User Manual

R

P/I-P55TVP4

Pentium Motherboard

USER’S MANUAL

Motherboard Model Information

This motherboard has various models besides the full-featured model described in this
manual. You have the option of purchasing models with or without the DIMM
sockets, MediaBus extension, or the L2 cache expansion slot. Ignore the features that
are not relevant to your model. You have the option of choosing 256KB or 512KB L2
cache onboard. To determine your L2 cache size, look on the box Model: or press
Pause when the BIOS diagnostic displays the information chart on your system. The
third line on the top right of the chart will show one of the following:

Cache Memory : 256K
Cache Memory : 512K

T o upgrade to 512KB cache, the 256K model requires a 256KB cache module to be
inserted into the optional L2 cache expansion slot. See your retailer about any fea­tures that you may need before purchasing.

USER'S NOTICE

No part of this manual, including the products and software described in it, may be repro­duced, transmitted, transcribed, stored in a retrieval system, or translated into any language
in any form or by any means, except documentation kept by the purchaser for backup pur­poses, without the express written permission of ASUSTeK COMPUTER INC. (“ASUS”).

ASUS PROVIDES THIS MANUAL “AS IS” WITHOUT WARRANTY OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED
W ARRANTIES OR CONDITIONS OF MERCHANTABILITY OR FITNESS FOR A P AR­TICULAR PURPOSE. IN NO EVENT SHALL ASUS, ITS DIRECTORS, OFFICERS,
EMPLOYEES OR AGENTS BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDEN­TAL, OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF
PROFITS, LOSS OF BUSINESS, LOSS OF USE OR DATA, INTERRUPTION OF BUSI­NESS AND THE LIKE), EVEN IF ASUS HAS BEEN ADVISED OF THE POSSIBILITY
OF SUCH DAMAGES ARISING FROM ANY DEFECT OR ERROR IN THIS MANUAL
OR PRODUCT.

Product warranty or service will not be extended if: (1) the product is repaired, modified or
altered, unless such repair, modification of alteration is authorized in writing by ASUS; or
(2) the serial number of the product is defaced or missing.

Products and corporate names appearing in this manual may or may not be registered trade­marks or copyrights of their respective companies, and are used only for identification or
explanation and to the owners’ benefit, without intent to infringe.

• Intel, LANDesk, and Pentium are registered trademarks of Intel Corporation.

• IBM and OS/2 are registered trademarks of International Business Machines.

• Symbios is a registered trademark of Symbios Logic Corporation.

• Windows and MS-DOS are registered trademarks of Microsoft Corporation.

• Sound Blaster AWE32 and SB16 are trademarks of Creative Technology Ltd.

• Adobe and Acrobat are registered trademarks of Adobe Systems Incorporated.
The product name and revision number are both printed on the product itself. Manual revi-

sions are released for each product design represented by the digit before and after the period
of the manual revision number. Manual updates are represented by the third digit in the
manual revision number.

For previous or updated manuals, BIOS, drivers, or product release information, contact ASUS
at http://www.asus.com.tw or through any of the means indicated on the following page.

SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FUR­NISHED FOR INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT
ANY TIME WITHOUT NOTICE, AND SHOULD NOT BE CONSTRUED AS A COM­MITMENT BY ASUS. ASUS ASSUMES NO RESPONSIBILITY OR LIABILITY FOR
ANY ERRORS OR INACCURACIES THA T MA Y APPEAR IN THIS MANUAL, INCLUD­ING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT.

Copyright © 1997 ASUSTeK COMPUTER INC. All Rights Reserved.

Product Name: ASUS P/I-P55TVP4
Manual Revision: 2.33
Release Date: November 1997

2

ASUS P/I-P55TVP4 User’s Manual

ASUS CONTACT INFORMATION

ASUSTeK COMPUTER INC.

Marketing Info

Address: 150 Li-Te Road, Peitou, Taipei, Taiwan 112, ROC
Telephone: [phone]
Fax: [phone]
Email: [e-mail]

Technical Support

Fax: [phone]
BBS: [phone]
Email: [e-mail]
WWW: www.asus.com.tw
Gopher: gopher.asus.com.tw
FTP: ftp.asus.com.tw/pub/ASUS

ASUS COMPUTER INTERNATIONAL

Marketing Info

Address: 721 Charcot Avenue, San Jose, CA 95131, USA
Telephone: [phone]
Fax: [phone]
Email: [e-mail]

Technical Support

BBS: [phone]
Email: [e-mail]
WWW: www.asus.com

ASUS COMPUTER GmbH

Marketing Info

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

Technical Support

Hotline: [phone]
BBS: 49-2102-448690
Email: [e-mail]
WWW: www.asuscom.de
FTP: ftp.asuscom.de/pub/ASUSCOM

ASUS P/I-P55TVP4 User’s Manual 3

CONTENTS

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

How this Manual is Organized ........................................................7

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

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

Features of the ASUS Motherboard .................................................8

Parts of the ASUS P/I-P55TVP4 Motherboard ..........................9

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

ASUS P/I-P55TVP4 Motherboard Layout ....................................10

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

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

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

Compatible Cyrix CPU Identification ................................15

2. System Memory (DRAM/SDRAM & SRAM) ........................17

DRAM Memory Installation Procedures: ..........................18

SDRAM Memory Installation Procedures: ........................19

Static RAM (SRAM) for Level 2 (External) Cache.................20

Compatible Cache Modules for this Motherboard .............20

3. Central Processing Unit (CPU).................................................21

4. Expansion Cards .......................................................................22

Expansion Card Installation Procedure: .............................22

Assigning IRQs for Expansion Cards.................................22

Assigning DMA Channels for ISA Cards...........................23

5. External Connectors..................................................................25

Power Connection Procedures .................................................31

IV. BIOS SOFTWARE .....................................................................32

Support Software ...........................................................................32

Flash Memory Writer Utility .........................................................32

Main Menu .........................................................................32

Advanced Features Menu ...................................................33

Updating your Motherboard's BIOS ........................................34

6. BIOS Setup ...............................................................................35

Load Defaults .....................................................................36

Standard CMOS Setup .............................................................36

Details of Standard CMOS Setup:......................................37

BIOS Features Setup ................................................................40

Details of BIOS Features Setup..........................................40

4

ASUS P/I-P55TVP4 User’s Manual

CONTENTS

Chipset Features Setup .............................................................43

Details of Chipset Features Setup.......................................43

Power Management Setup........................................................46

Details of Power Management Setup .................................46

PNP and PCI Setup ..................................................................48

Details of PNP and PCI Setup ............................................48

Load BIOS Defaults .................................................................50

Load Setup Defaults .................................................................50

Supervisor Password and User Password ................................51

IDE HDD Auto Detection ........................................................52

Save and Exit Setup .................................................................53

Exit Without Saving .................................................................53

V. DESKTOP MANAGEMENT......................................................55

Desktop Management Interface (DMI)..........................................55

Introducing the ASUS DMI Configuration Utility .............55

System Requirements .........................................................55

Using the ASUS DMI Configuration Utility ......................56

VI. ASUS PCI SCSI Cards ..............................................................59

Symbios SCSI BIOS and Drivers ..................................................59

ASUS PCI-SC200 & PCI-SC860 SCSI Cards ..............................59

Setting Up the ASUS PCI-SC200 & PCI-SC860.....................60

Setting the INT Assignment for the ASUS PCI-SC200 ...........60

Terminator Requirements for SCSI Devices ............................60

Terminator Settings for the ASUS PCI-SC860 ........................61

Terminator Settings for the ASUS PCI-SC200 ........................61

SCSI ID Numbers for SCSI Devices .......................................62

SCSI ID Priority .......................................................................62

ASUS P/I-P55TVP4 User’s Manual 5

FCC & DOC COMPLIANCE

Federal Communications Commission Statement

This device complies with FCC Rules Part 15. Operation is subject to the following
two conditions:

• This device may not cause harmful interference, and

• This device must accept any interference received, including interference that
may cause undesired operation.

This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference in a residential installa­tion. This equipment generates, uses and can radiate radio frequency energy and, if
not installed and used in accordance with manufacturer's instructions, may cause
harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the inter­ference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment to an outlet on a circuit different from that to which
the receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

WARNING! The use of shielded cables for connection of the monitor to the

graphics card is required to assure compliance with FCC regulations. Changes
or modifications to this unit not expressly approved by the party responsible for
compliance could void the user's authority to operate this equipment.

Canadian Department of Communications Statement

This digital apparatus does not exceed the Class B limits for radio noise emissions
from digital apparatus set out in the Radio Interference Regulations of the Cana­dian Department of Communications.

6

ASUS P/I-P55TVP4 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: Information on setting up the BIOS software.
V. Support Software: Information on the included support software.
VI. ASUS SCSI Cards: Installation of optional ASUS SCSI cards.

Item Checklist

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

(1) ASUS motherboard

I. INTRODUCTION

(Manual / Checklist)

(1) 9pin male serial + 25pin male serial external connector set
(1) 25pin female parallel + 6pin female PS/2 mouse external connector set
(1) IDE ribbon cable for master and slave drives
(1) floppy ribbon cable for (1) 5.25inch floppy and (2) 3.5inch floppies
(1) bag of spare jumpers
(1) disk or CD disc with support drivers and utilities:

• Flash Memory Writer utility to update the onboard programmable BIOS

• Desktop Management Interface (DMI) utility

• Bus Master IDE Drivers for various operating systems

• Readme files for descriptions and use of the files

• Technical Support Form
(1) User’s manual
ASUS PCI-SC200 Fast-SCSI or PCI-SC860 Ultra-Fast SCSI card
PS/2 mouse, Infrared, USB1, and USB2 external connector module (optional)
ASUS pipelined burst cache module (optional)

ASUS P/I-P55TVP4 User’s Manual 7

II. FEATURES

(Features)

II. FEATURES

Features of the ASUS Motherboard

The ASUS P/I-P55TVP4 is carefully designed for the demanding PC user who wants
a great many features in a small package. This motherboard:

• Easy Installation: Equipped with BIOS that supports autodetection of hard

drives, PS/2 mouse, and Plug and Play devices to make set up of hard drives,
expansion cards, and other devices virtually automatic.

®

• V ersatile Processor Support: Intel Pentium

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

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

• 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)

• L2 Cache: Comes in 0KB, 256KB, or 512KB Pipelined Burst SRAM version,

each version is upgradeable to 256KB or 512KB. Upgrades are made through a
Synchronous SRAM cache module. (See page 14 for compatible modules.)

75-233MHz (P55C-MMX™, P54C/

™

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

16MB, or 32MB to form a memory size between 8MB to 128MB. Supports both
Fast Page Mode (FPM) and Extended Data Output (EDO) SIMMs. Has two
168-pin DIMMs to support (8, 16, 32MB) SDRAM modules.

• ISA and PCI Expansion Slots: Provides three 16-bit ISA slots, three 32-bit

PCI slots, and one PCI/MediaBus, which allows the use of either a standard PCI
card or the ASUS MediaBus Card.

• ASUS MediaBus: Features an expansion slot extension shared with PCI Slot 4

for an optional high-performance expansion card, which includes two functions
in one easy-to-install card.

• 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.

• PCI Bus Master IDE Controller: Comes with an onboard PCI Bus Master

IDE controller with two connectors that supports four IDE devices in two chan­nels, provides faster data transfer rates, and supports Enhanced IDE devices,
such as Tape Backup and CD-ROM drives. Supports two drives of either 5.25­inch (360KB or 1.2MB) or 3.5-inch (720KB, 1.44MB or 2.88MB) disk drives.
Supports Japanese “Floppy 3 mode” (3.5-inch disk drive: 1.2MB) and LS-120
floppy disk drives (3.5-inch disk drive: 120MB, 1.44MB, 720KB). BIOS sup­ports IDE CD-ROM or SCSI device bootup.

8 ASUS P/I-P55TVP4 User’s Manual

II. FEATURES

• Optional PS/2 Mouse, USB, IrDA Connector: Supports an optional cable and
bracket set to mount the connectors to an unused expansion slot. A second
IrDA connector is available for a standard individual infrared cable set.

• Symbios SCSI BIOS: Supports the optional ASUS SCSI controller cards
through onboard firmware.

Parts of the ASUS P/I-P55TVP4 Motherboard

Programmable
Flash ROM Super Multi-I/O

3 ISA Slots

3 PCI Slots

IDE/Floppy

Serial/Parallel Ports

II. FEATURES

(Motherboard Parts)

2 DIMM Sockets

PCI 4 or ASUS
MediaBus Slot

Intel’s 430VX
PCIset

(4) 72-pin SIMM
Sockets

CPU ZIF
Socket 7

L2 Upgrade
Cache
Expansion Slot

Onboard 256KB/
512KB Pipelined
Burst L2 Cache

ASUS P/I-P55TVP4 User’s Manual 9

III. INSTALLATION

ASUS P/I-P55TVP4 Motherboard Layout

ISA Slot 3

(Motherboard Layout )

III. INSTALLATION

ISA Slot 2

ISA Slot 1

PCI Slot 4 / MediaBus 2.0

PCI Slot 3

Block Program (Dis/En)

Multi I/O (En/Dis)

PCI Slot 2

JP9

JP10

Universal Serial Bus
(Reserved for future use)

Super
Multi I/O

PCI Slot 1

Primary IDE

BUS FREQ

JP3

PS/2 Mouse

Key-

board

Serial Ports

COM 1

Parallel Port (Printer)

Secondary IDE

Floppy Drives

Board Power Input

P8

SIMM Socket 1 (Bank 0)

SIMM Socket 2 (Bank 0)

SIMM Socket 3 (Bank 1)

JP1

JP2

COM 2

P9

SIMM Socket 4 (Bank 1)

DIMM Socket 2 (Bank 3)

DIMM Socket 1 (Bank 2)

RTC Clear

IDE LED

JP7

Case Conn (CON 1)

Infrared Con.

Vio/Vcore
JP22
JP21
JP20
JP19
JP18
JP17
JP16

BUS Ratio

JP5

JP6

CPU ZIF Socket 7

Pipelined Burst Level 2 Cache Expansion Slot

L2 CACHE

JP4

256/512KB OnBoard L2 Cache

10 ASUS P/I-P55TVP4 User’s Manual

III. INSTALLATION

Jumpers

1) JP9 p. 7 Multi-I/O Selection (Enable/Disable)

2) JP10 p. 7 Flash ROM Boot Block Program (Disable/Enable)

3) JP4 p. 8 Total Level 2 Cache Size Setting

4) JP7 p. 8 Real Time Clock RAM (Operation/Clear Data)

5) JP16-22 p. 9 CPU Voltage Selection

6) JP1, 2, 3 p. 10 CPU External Clock (BUS) Frequency Selection

7) JP5, JP6 p. 10 CPU:BUS Frequency Ratio

Expansion Slots

1) SIMM Sockets p. 11 72-Pin DRAM Memory Expansion Sockets

2) DIMM Sockets p . 1 3 168-Pin SDRAM Memory Expansion Sockets

3) Cache Expansion p. 14 Pipelined Burst SRAM Cache Module Socket

4) ZIF Socket 7 p. 15 Central Processing Unit (CPU) Socket

5) ISA Slots 1,2,3 p. 16 16-bit ISA Bus Expansion Slots

6) PCI Slots 1,2,3 p. 16 32-bit PCI Bus Expansion Slots

Connectors

1) KBCON p. 1 9 Keyboard Connector (5-pin female)

2) PS2MOUSE p. 1 9 PS/2 Mouse Connector (6-pin block)

3) PRINTER p. 20 Parallel (Printer) Port Connector (26-1 pin block)

4) COM1, COM2 p. 20 Serial Port COM1 & COM2 (10-1 pin blocks)

5) FLOPPY p. 2 1 Floppy Disk Drive Connector (34-pin block)

6) POWER p. 2 1 Motherboard Power Connector (12-pin block)

7) Primary / Second IDE p. 22 Primary / Secondary IDE Connector (40-1 pin blocks)

8) IDELED p. 2 2 IDE LED Activity Light (2 pins)

9) TB LED (CON1) p. 23 Turbo LED/Power LED (2 pins)

10) SMI (CON1) p. 23 SMI Switch Lead (2 pins)
1 1 ) RESET (CON1) p. 2 3 Reset Switch Lead (2 pins)

12) KEYLOCK (CON1) p. 23 Keyboard Lock Switch Lead (5 pins)

Motherboard Layout

III. INSTALLATION

13) SPEAKER (CON1) p. 23 Speaker Output Connector (4-pins)

14) IR p. 24 Infrared Port Module Connector

15) USB p. 24 Universal Serial Bus Connector (10-pin block) (Reserved)

ASUS P/I-P55TVP4 User’s Manual 11

III. INSTALLATION

III. INSTALLATION

Installation Steps

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

1. Set Jumpers on the Motherboard

2. Install DRAM Modules

3. Install the Central Processing Unit (CPU)

4. Install Expansion Cards

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

6. Setup the BIOS Software

1. Jumpers

Several hardware settings are made through the use of jumper caps to connect jumper
pins (JP) on the motherboard. See motherboard layout locations of jumpers. The jumper
settings will be described numerically such as [----], [1-2], [2-3] for no connection,

(Jumpers)

connect pins 1&2, and connect pins 2&3 respectively. Pin 1 for our motherboards is
always on top
board connector away from yourself. A “1” is written besides pin 1 on jumpers with
three pins. The jumpers will also be shown graphically such as to connect
pins 1&2 and to connect pins 2&3. Jumpers with two pins will be shown as

for Short (On) and for Open (Off). For manufacturing simplicity , the jumpers
may be sharing pins from other groups. Use the diagrams in this manual instead of
following the pin layout on the board. Settings with two jumper numbers require that
both jumpers be moved together. To connect the pins, simply place a plastic jumper
cap over the two pins as diagramed.

WARNING! Computer motherboards and expansion cards contain very delicate

Integrated Circuit (IC) chips. To protect them against damage from static electric­ity, you should follow some precautions whenever you work on your computer.

1. Unplug your computer when working on the inside.

Pin 1

or on the left

Pin 1

when holding the motherboard with the key-

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

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

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

12 ASUS P/I-P55TVP4 User’s Manual

III. INSTALLATION

Jumper Settings

1. Onboard Multi-I/O Selection (JP9)

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

Multi-I/O JP9

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

JP9

1
2
3

Enable (Default) Disabled

Multi I/O Setting (Enable/Disable)

JP9

1
2
3

2. Flash ROM Boot Block Programming (JP10)

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

Programming JP10

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

(Jumpers)

III. INSTALLATION

JP10

1
2
3

Disabled / Protected
(Default)

Boot Block Programming (Disable/Enable)

ASUS P/I-P55TVP4 User’s Manual 13

JP10

1
2
3

Enabled

III. INSTALLATION

3. Total Level 2 Cache Size Setting (JP4)

This jumper sets the total amount of L2 cache that is present. If you have two
cache chips onboard (see motherboard layout for locations), then you have
256KB. A cache module can be used to upgrade the 256KB version to 512KB.
If there is no onboard cache, you may install a cache module of either 256KB or
512KB. IMPORTANT: See External Cache for installation procedures. Re-
gardless of your cache combination, set the following jumpers according to the

total amount of L2 cache that is present onboard and installed as a module.
L2 Cache Size JP4

256KB [2-3] (default)
512KB [1-2]

III. INSTALLATION

(Jumpers)

JP4

1
2
3

256KB

Total L2 Cache Size Setting (256KB/512KB)

JP4

1
2
3

512KB

4. Real Time Clock (RTC) RAM (JP7)

This clears the user-entered information stored in the CMOS RAM of the Real
Time Clock such as hard disk information and passwords. To clear the RTC
data: (1) Turn off the PC, (2) Short this jumper, (3) Power on the PC, (4) Turn
off the PC, (5) Remove this jumper, (6) Power on the PC, (7) Hold down
<Delete> during bootup and enter BIOS setup to re-enter user preferences.

RTC RAM JP7

Operation [open] (Default)
Clear Data [short] (momentarily)

JP7

Operation (Default)

RTC RAM (Operation/Clear Data)

JP7

Clear Data

14 ASUS P/I-P55TVP4 User’s Manual

III. INSTALLATION

5. Voltage Regulator Output Selection (JP16-JP22)

These jumpers set the voltage supplied to the CPU. Determine whether your
CPU has a Single Power Plane or Dual Power Planes and then the voltage that
it uses. 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 Intel’ s new
Pentium P55C MMX 200MHz is supported at 2.8Volts. When a single power
plane CPU is installed, the dual power plane selections will be automatically
disabled. When a dual power plane CPU is installed, the single power plane
selections will be automatically disabled. You may have one jumper on the Single
Power Plane and another on the Dual Power Planes at the same time.

Pentium MMX (P55C)
(150MHz-233MHz)

Intel Pentium (P54C)
(75MHz-200MHz)

AMD-K6
(PR166 and faster)

AMD-K5
(PR75-PR133)

IBM/Cyrix 6x86(MX)
(PR166 and faster)

IBM/Cyrix 6x86(M1)
(PR166 and faster)

Single Power Plane Type Voltage Dual Power Planes Voltage

JP17 [short] VRE 3.5V JP22 [short] 3.2V
JP16 [short] (Default) STD 3.4V JP21 [short] 2.5V

JP20 [short] 2.9V
JP19 [short] 2.7V

JP18 [short] (Default) 2.8V

JP22
JP21
JP20
JP19
JP18
JP17
JP16

(Default)

Voltage Regulator Output Selection

Reserved

2.5V

2.88V

2.7V

2.8V

3.5V (VRE)

3.38V (STD)

(Jumpers)

III. INSTALLATION

Compatible Cyrix CPU Identification

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

ASUS P/I-P55TVP4 User’s Manual 15

III. INSTALLATION

6. CPU External (BUS) Frequency Selection (JP1, JP2, JP3)

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).

7. CPU to BUS Frequency Ratio (JP5, JP6)

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) Fr equency Selection.

JP2

JP1

JP3

JP2

JP1

JP3

JP2

JP1

JP3

JP2

JP1

JP3

III. INSTALLATION

(Jumpers)

JP6

3.0 x

1
2
3

JP5

1
2
3

50MHz 55MHz 60MHz 66MHz

CPU External Clock (BUS) Frequency Selection

JP6

JP5

1.5 x

CPU : BUS Frequency Ratio (1.5x, 2.0x, 2.5x, 3.0x)

JP6

2.0 x

JP5

1
2
3

JP6

2.5 x

1
2
3

JP5

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

(BUS Freq.) (Freq. Ratio)

CPU Model Freq. Ratio BUS Freq. JP3 JP2 JP1 JP6 JP5

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

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

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

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

*IBM/Cyrix -PR166+ 133MHz 2.0x 66MHz [2-3] [1-2] [2-3] [2-3] [1-2]

*NOTE: The only IBM/Cyrix 6x86(L) (or M1) that is supported on this motherboard is rev 2.7 or later.

16 ASUS P/I-P55TVP4 User’s Manual

III. INSTALLATION

2. System Memory (DRAM/SDRAM & SRAM)

This motherboard supports four 72-pin SIMMs (Single Inline Memory Modules) of
4MB, 8MB, 16MB, or 32MB to form a memory size between 8MB to 128MB. The
DRAM can be either 60ns or 70ns Fast Page Mode (FPM) (Asymmetric or Symmet­ric) or Enhanced Data Output (EDO). SIMMs must be installed in pairs so that each
bank contains two of the same size memory modules. A new feature is the support
of Dual Inline Memory Modules (DIMM’s) when the SIMM sockets are not used.
T wo slots are available for 3.3Volt (power level) Unbuffered Synchronous DRAMs
(SDRAM) of either 8, 16, or 32MB. Maximum memory of SIMMs or DIMMs must
be 128MB or less.

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

Install memory in Banks 0&1 or Banks 2&3 in combinations as follows:

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

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

(Bank 2 & 3 must be empty)

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

(Bank 2 & 3 must be empty)

Bank 2 8MB, 16MB, 32MB, 64MB x1
DIMM Slot 1 168-pin EDO or SDRAM DIMM

(Bank 0 & 1 must be empty)

Bank 3 8MB, 16MB, 32MB, 64MB x1
DIMM Slot 2 168-pin EDO or SDRAM DIMM

(Bank 0 & 1 must be empty)
Total System Memory (Max 128MB) =

WARNING: Do not install both SIMMs and DIMMs at the same time or
else you will burn your memory. Previous motherboards supported both
SIMMs and DIMMs to be used together because there were 5 volt signal
tolerant DIMMs, but these memory modules are no longer produced.

(System Memory)

III. INSTALLATION

IMPORTANT: Banks 0 & 1 must have the same size memory installed in pairs.
Do not use memory modules with more than 24 chips per module. Modules
with more than 24 chips exceed the design specifications of the memory sub­system and will be unstable.

ASUS P/I-P55TVP4 User’s Manual 17

DRAM Memory Installation Procedures:

1. The SIMM memory modules will only fit in one orientation as shown because

III. INSTALLATION

(DRAM Memory)

III. INSTALLATION

of a "Plastic Safety Tab" on one end of the SIMM slots which requires the
"Notched End" of the SIMM memory modules.

1234

DRAM Memory
Module Example

Bank 0 Bank 1

72 Pin SIMM DRAM Sockets

Notched End

2. Press the memory module firmly into place starting from a 45 degree angle
making sure that all the contacts are aligned with the socket.

3. With your finger tips, rock the memory module into a vertical position so that it
clicks into place.

Clip

Plastic Safety Tab (This Side Only)

72 Pin DRAM in SIMM Socket

Mounting Hole

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

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

18 ASUS P/I-P55TVP4 User’s Manual

III. INSTALLATION

SDRAM Memory Installation Procedures:

Insert the module 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

Installed SDRAM
Memory Module

60 Pins

20 Pins

Lock

Example

168 Pin DIMM SDRAM Sockets

The Dual Inline Memory Module (DIMM) memory module must be 3.3Volt Unbuf­fered Synchronous DRAM (SDRAM) of either 8, 16, or 32. You can identify the
type of DIMM module by the illustration below:

SDRAM Key Position

RFU

Unbuffered

Buffered

Voltage Key Position

5.0V

Reserved

3.3V

168-PIN SDRAM DIMM Notch Key Definitions

(SDRAM Memory)

III. INSTALLATION

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. 4
clock signals are supported on this motherboard.

ASUS P/I-P55TVP4 User’s Manual 19

III. INSTALLATION

Static RAM (SRAM) for Level 2 (External) Cache

The motherboard you purchase may have either 0KB, 256KB, or 512KB onboard.
If you have both onboard cache chips (see "Map of Motherboard" for locations) and
a Cache Expansion Slot, then you have 256KB. If you only have onboard cache
chips, then you have 512KB. An "ASUS" or "COAST" cache module can be used
to upgrade the 256KB version to 512KB. If there is no onboard cache, you may
install a cache module of either 256KB or 512KB.

IMPORTANT: You must set "Total Level 2 Cache Size Setting" jumper on
when changes are made to your cache size.

42 Pins

III. INSTALLATION

(External Cache)

Insert the module as shown. Because the number of pins are different on either side
of the break, the module will only fit in the orientation as shown.

Compatible Cache Modules for this Motherboard

Pipelined Burst
Cache Module
Example

38 Pins

L2 Cache Expansion Socket

SIMM Cache Module 256KB to 512KB 0KB to 256/512KB

ASUS CM1 Rev 1.0 ---- ---­ASUS CM1 Rev 1.3 ---- ---­ASUS CM4 Rev 1.5 ---- ---­ASUS CM1 Rev 1.6 Yes ---­ASUS CM1 Rev 3.0 * Yes Yes
COAST 1.1 ---- ---­COAST 1.2 ---- ---­COAST 1.3 ---- ---­COAST 2.0 Yes Yes
COAST 2.1 Yes Yes
COAST 3.0 Yes Yes
COAST 3.1 Yes Yes

* NOTE: ASUS CM1 Rev 3.0 has two TAG SRAM's to comply with COAST 3.0 specifica-

tions. This extra TAG SRAM will not conflict with the onboard TAG SRAM.

20 ASUS P/I-P55TVP4 User’s Manual