ASUS PI-P55SP4V User Manual

R

P/I-P55SP4V 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 ASUST eK
COMPUTER INC. (hereinafter referred to as ASUS) except documentation kept
by the purchaser for backup purposes.

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.

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 updated BIOS, drivers, or prod­uct release information you may visit ASUS' home page at: http://www .asus.com.tw/

© Copyright 1996 ASUSTeK COMPUTER INC. All rights reserved.

Product Name: P/I-P55SP4V
Manual Revision: 1.72
Release Date: December 1996

II

ASUS P/I-P55SP4V User's Manual

ASUS CONTACT INFORMATION

ASUSTeK COMPUTER INC.

Marketing Info:

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

Technical Support:

Fax: [phone]
BBS: 886-2-896-4667
Email: [e-mail]
WWW: http://www.asus.com.tw/
Gopher: gopher.asus.com.tw
FTP: ftp.asus.com.tw/pub/ASUS

ASUS COMPUTER INTERNATIONAL

Marketing Info:

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

Technical Support:

BBS: 1-408-474-0569
Email: [e-mail]

ASUS COMPUTER GmbH

Marketing Info:

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

Technical Support:

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

ASUS P/I-P55SP4V User's Manual III

CONTENTS

I. INTRODUCTION................................................................ 1

How this manual is organized ..................................................................... 1

Item Checklist ............................................................................................. 1

Features of This Motherboard ..................................................................... 2

II. FEATURES......................................................................... 2

Parts of the Motherboard............................................................................. 3

III. INSTALLATION ............................................................... 4

Map of the Motherboard ............................................................................. 4

Jumpers........................................................................................... 5

Expansion Slots .............................................................................. 5

Connectors ...................................................................................... 5

Installation Steps ......................................................................................... 6

1. Jumpers ................................................................................................... 6

Jumper Settings .............................................................................. 7

Cyrix CPU Identification.............................................................. 11

2. System Memory (DRAM & SRAM) ................................................... 12

DRAM Memory Installation Procedures: .................................... 13

3. Central Processing Unit (CPU) ............................................................ 15

4. Expansion Cards................................................................................... 16

Expansion Card Installation Procedure: ....................................... 16

Assigning IRQs for Expansion Cards........................................... 16

Assigning DMA Channels for ISA Cards..................................... 17

ASUS MediaBus Card.................................................................. 18

5. External Connectors ............................................................................. 19

Power Connection Procedures...................................................... 25

Support Software ................................................................................ 25

The Flash Memory Writer Utility Screen: .................................... 26

IV. BIOS SOFTWARE .......................................................... 26

Flash Memory Writer Utility..................................................................... 26

6. BIOS Setup........................................................................................... 29

Load Defaults ............................................................................... 30

Standard CMOS Setup ........................................................................ 30

Details of Standard CMOS Setup:................................................ 31

BIOS Features Setup........................................................................... 34

Details of BIOS Features Setup:................................................... 34

Chipset Features Setup........................................................................ 37

Details of Chipset Features Setup: ............................................... 37

Power Management Setup .................................................................. 39

Details of Power Management Setup: .......................................... 40

PNP and PCI Setup ............................................................................. 42

Details of PNP and PCI Setup: ..................................................... 42

Load BIOS Defaults............................................................................ 44

Load Setup Defaults............................................................................ 44

IV

ASUS P/I-P55SP4V User's Manual

CONTENTS

Supervisor Password and User Password ........................................... 45

IDE HDD Auto Detection ................................................................... 46

Save and Exit Setup ............................................................................ 47

Exit Without Saving............................................................................ 47

V. DESKTOP MANAGEMENT........................................... 49

Desktop Management Interface (DMI) ..................................................... 49

Introducing the ASUS DMI Configuration Utility ....................... 49

System Requirements ................................................................... 49

Using the ASUS DMI Configuration Utility ................................ 50

Notes:............................................................................................ 50

VI. PCI-SC200 SCSI Card.................................................... 53

NCR SCSI BIOS and Drivers ................................................................... 53

The PCI-SC200 SCSI Interface Card........................................................ 54

Setting Up the PCI-SC200 .................................................................. 54

Setting the INT Assignment................................................................ 55

Terminator Settings ............................................................................. 55

SCSI ID Numbers ............................................................................... 56

VII. I-A16C Audio Card ....................................................... 57

I-A16C Audio Features ....................................................................... 57

Unpacking and Handling Precautions................................................. 57

Layout and Connectors ....................................................................... 58

Connectors .................................................................................... 58

Video Software Manual.......................................................... 59

VIII. DOS UTILITY ............................................................. 61

DOS Utility ............................................................................................... 61

1. SVGAUTL.EXE ............................................................................. 61

2. V ideo Modes ................................................................................... 63

IX. SOFTWARE DRIVERS ................................................. 68

Software Drivers ....................................................................................... 68

1. Windows 3.1 .................................................................................. 69

2. Windows 95 ................................................................................... 77

3. Windows NT 3.1 ............................................................................. 80

4. Windows NT 3.5, 3.51, & 4.0 ......................................................... 80

5. Autodesk ADI 4.2 -Protected Mode................................................ 82

6. OS/2 V2.1 ....................................................................................... 88

7. OS/2 V3.0 (Warp) .......................................................................... 89

8. Double Bytes OS/2 Warp............................................................... 90

X. DOS 3.1 & Windows 3.1x Audio Software

(with optional I-A16C Audio Card Bundle Only)

XI. Windows 95 Audio Software

(with optional I-A16C Audio Card Bundle Only)

ASUS P/I-P55SP4V User's Manual V

FCC & DOC COMPLIANCE

Federal Communications Commission Statement

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

• This device may not cause harmful interference, and

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

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

• Re-orient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

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

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

WARNING: The use of shielded cables for connection of the monitor to the graphics
card is required to assure compliance with FCC regulations. Changes or modifica­tions to this unit not expressly approved by the party responsible for compliance
could void the user's authority to operate this equipment.

Canadian Department of Communications Statement

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

VI

ASUS P/I-P55SP4V 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
III. Installation: Instructions on setting up the motherboard
IV. BIOS Setup: BIOS software setup information
V. DMI Utility: BIOS supported Desktop Management Interface
VI. PCI-SC200: Installation of an optional SCSI card
VII. I-A16C: Installation of an optional Audio card
VIII. SiS Video: Installation and information for SiS video
IX. DOS/Win3.1x: Audio Software Manual (with I-A16C bundle)
X. Windows 95: Audio Software Manual (with I-A16C bundle)

Item Checklist

I. INTRODUCTION

(Manual / Checklist)

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

√ The P/I-P55SP4V motherboard
√ 2 serial port ribbon cables attached to a mounting bracket
√ 1 parallel ribbon cable with mounting bracket
√ 1 IDE ribbon cable
√ 1 floppy ribbon cable
√ 1 Video + PS/2 Mouse Card (on 16-pin connector)
√ Support software on CD or diskettes (view FILELIST.TXT for contents)
√ This user's manual (audio sections included with I-A16C bundle)

Optional infrared module
Optional PCI-SC200 Fast-SCSI card
Optional I-A16C Audio Card

ASUS P/I-P55SP4V User’s Manual 1

II. FEATURES

Features of This Motherboard

The P/I-P55SP4V is carefully designed for the demanding PC user who wants a
great many features in a small package. This motherboard:

• Easy Installation: Is equipped with BIOS that supports auto

detection of hard drives and Plug and Play to make setup of hard drives and
expansion cards virtually automatic.

II. FEATURES

(Features)

• Multi-Processor/Multi-Speed Support: Supports one Pentium (75-200MHz),

Cyrix P166+ (Rev 2.7 or later), or AMD-K5 (PR75-100MHz) (See page 11).

• SiS Chipset: Features SiS5596 chipset with built-in video controller.

Supports video shared memory from 1MB to 2MB.

• Desktop Management Interface (DMI): Supports DMI through BIOS which

allows hardware to communicate within a standard protocol
creating a higher level of compatibility (see section V).

• L2 Cache: Provides 512KB Pipelined Burst SRAM onboard.

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

16MB, 32MB, 64MB to form a memory size between 8MB to 256MB. Sup­ports both Fast Page Mode (FPM) and Extended Data Output (EDO) SIMM's.

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

PCI slots, and one PCI/MediaBus 2.0 which allows the use of either a standard
PCI card or the ASUS MediaBus Card.

• ASUS MediaBus Rev 2.0: 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. (For revision compatibility infor-

mation, please refer to page 18.)

• 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. The Japanese "Floppy 3 mode" (3.5" 1.2MB)

floppy standard is also supported.

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

IDE controller with two connectors that supports four IDE devices in two chan­nels, provides faster data transfer rates, and supports Enhanced IDE devices
such as CD-ROM drives. This controller supports PIO Modes 3 & 4 and Bus
Master IDE DMA Mode 2. BIOS supports IDE CD-ROM or SCSI drive

bootup.

2 ASUS P/I-P55SP4V User’s Manual

II. FEATURES

• Optional IrDA : This motherboard supports an optional infrared port module
for wireless interface.

• NCR SCSI BIOS: This motherboard has firmware that supports the optional
ASUS PCI-SC200 SCSI controller cards.

Parts of the Motherboard

PS/2 Mouse +

Super Multi-I/O

3 ISA Slots

3 PCI Slots
Parallel & Serial

Video Feature
Connector

Video Connector

II. FEATURES

(Parts of Board)

Onboard Floppy
& IDE Connect.

PCI 4 or ASUS
MediaBus 2.0

(4) 72-pin SIMM
Sockets

Programmable
Flash ROM

SiS5596
Chipset

CPU ZIF
Socket 7

Onboard 512KB
Pipelined
Burst L2 Cache

ASUS P/I-P55SP4V User’s Manual 3

III. INSTALLATION

Map of the Motherboard

Keyboard

III. INSTALLATION

(Map of Board)

ISA Slot 3

Feature Connector

ISA Slot 2

Boot Block Program

Universal Serial Bus

ISA Slot 1

(Reserved for future use)

PCI Slot 4 / MediaBus 2.0

JP8

JP5
JP6
JP7

BUS Freq.

PCI Slot 3

JP1

Multi-I/O

PCI Slot 2

VGA + PS/2
Card Connector

PCI Slot 1

Primary IDE

Secondary IDE

COM 1

Parallel Printer

SIMM Socket 4 (Bank 1)

SIMM Socket 3 (Bank 1)

SIMM Socket 2 (Bank 0)

SIMM Socket 1 (Bank 0)

Floppy Drives

COM 2

Board Power Input

P8

P9

#CR2032
3Volt Button
Cell Battery

IDE_LED

Case Connections

CMOS RAM

JP16

Infrared Conn

CPU to Bus Ratio

P55C CPU Volt

P54C CPU Volt

12V CPU Fan Power

JP12

JP11

JP29
JP28
JP27
JP26
JP25
JP24
JP23

CPU ZIF Socket 7

512KB Onboard L2 Cache

JP4

Linear/Burst Mode

4 ASUS P/I-P55SP4V User’s Manual

III. INSTALLATION

Jumpers

1) JP1 p. 7 Multi-I/O Selection (Enable/Disable)

2) JP8 p. 7 Flash ROM Boot Block Program (Disable/Enable)

3) JP16 p. 8 CMOS RAM (Operation/Clear CMOS Data)

4) JP23-29 p. 9 Voltage Regulator Output Selection

5) JP5, JP6, JP7 p. 10 CPU External Clock (BUS) Frequency Selection

6) JP11, JP12 p. 10 CPU:BUS Frequency Ratio

Expansion Slots

1) SIMM Sockets p. 12 DRAM Memory Expansion sockets

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

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

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

5) PCI 4 / MediaBus p. 18 32-bit PCI Bus Slot and MediaBus

Connectors

1) Keyboard p. 19 Keyboard connector (5-pin Female)

2) Video + PS/2 Mouse p. 19 Video + PS/2 Mouse Card connector

3) Parallel Port (Printer) p. 20 Parallel Port (Printer) connector (26-pin Block)

4) Serial Port p. 20 Serial Port (COM1 & COM2) (10-pin Blocks)

5) Floppy Drive p. 21 Floppy Drive connector (34-pin Block)

6) Power Input p. 21 Motherboard Power connector (12-pin Block)

7) Primary/Second. IDE p. 22 Primary/Secondary IDE connectors (40-pin Blocks)

8) IDE_LED p. 22 IDE_LED activity light

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

10) SMI Switch (CON1) p. 23 SMI Switch lead (2-pins)

11) Reset Switch (CON1) p. 23 Reset Switch lead (2-pins)

12) Key Lock (CON1) p. 23 Keyboard Lock Switch lead (5-pins)

13) Speaker (CON1) p. 23 Speaker connector (4-pins)

14) FAN p. 24 CPU 12V Cooling Fan connector

15) IR CON. p. 24 Infrared Port Module connector

(Map of Board)

III. INSTALLATION

ASUS P/I-P55SP4V User’s Manual 5

III. INSTALLATION

Pin 1

III. INSTALLATION

Installation Steps

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

1. Set Jumpers on the Motherboard

2. Install DRAM and SRAM Modules

3. Install the Central Processing Unit (CPU)

4. Install Expansion Cards

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

6. Setup the BIOS Software

1. Jumpers

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

(Jumpers)

[1-2], [2-3] for no connection, connect pins 1&2, and connect pins 2&3 respec­tively. Pin 1 for our motherboards is always on top
holding the motherboard with the keyboard connector away from yourself. A "1" is
written besides pin 1 on jumpers with three pins. The jumpers will also be shown
graphically such as to connect pins 1&2 and to connect pins 2&3.
Jumpers with two pins will be shown as for Short (On) and for Open
(Off). For manufacturing simplicity, the jumpers may be sharing pins from other
groups. Use the diagrams in this manual instead of following the pin layout on the
board. Settings with two jumper numbers require that both jumpers be moved to­gether. To connect the pins, simply place a plastic jumper cap over the two pins as
diagramed.

WARNING: Computer motheboards and components contain very delicate
Integrated Circuit (IC) chips. To protect the motherboard and other compo­nents against damage from static electricity, you should follow some precau­tions whenever you work on your computer.

1. Unplug your computer when working on the inside.

2. Hold components by the edges and try not to touch the IC chips, leads, or
circuitry.

3. Use a grounded wrist strap before handling computer components.

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

Pin 1

or on the left

when

ASUS P/I-P55SP4V User’s Manual6

III. INSTALLATION

Jumper Settings

1. Onboard Multi-I/O Selection (JP1)

You can selectively disable each onboard Multi-I/O item (floppy, serial, paral­lel, and IrDA) through BIOS (see CHIPSET FEATURES SETUP) or disable all
Multi-I/O items at once with the following jumper in order to use your own
Multi-I/O card.

Selections JP1

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

JP1

1
2

3

Enable (Default) Disabled

Multi I/O Setting (Enable / Disable)

JP1

1
2

3

2. Flash ROM Boot Block Programming (JP8)

This sets the operation mode of the boot block area of the BIOS Flash ROM to
allow programming in the Enabled position.

Programming JP8

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

(Jumpers)

III. INSTALLATION

JP8

1
2
3

Disabled (Default)

Boot Block Programming (Disable / Enable)

JP8

1
2
3

Enabled

ASUS P/I-P55SP4V User’s Manual 7

III. INSTALLATION

3. CMOS RAM (JP16)

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 CMOS
data: (1) Turn off the PC, (2) Set jumper to "Clear", (3) Power on the PC, (4)
Turn off the PC, (5) Set jumper to "Operation", (6) Power on the PC, (7) Hold
down <Delete> during bootup and enter BIOS setup to re-enter user
preferences.

Selections JP16

Operation [1-2] (Default)
Clear CMOS Data [2-3] (momentarily)

III. INSTALLATION

(Jumpers)

1
2
3

Operation (Default) Clear CMOS Data

CMOS RAM (Operation / Clear CMOS Data)

JP16JP16

1
2
3

ASUS P/I-P55SP4V User’s Manual8

III. INSTALLATION

4. Voltage Regulator Output Selection (JP23-29)

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). 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.

Single Power Plane Type Voltage Dual Power Planes Voltage

JP24 [short] VRE 3.52V JP29 [short] Reserved
JP23 [short] (Default) STD 3.38V JP28 [short] 2.5V

JP27 [short] 2.88V
JP26 [short] 2.7V
JP25 [short] (Default) 2.8V

JP29
JP28

JP27
JP26
JP25
JP24

JP23
STD 3.3V - 3.465V (Default)

Voltage Regulator Output Selection (STD / VRE)

JP29

JP28
JP27
JP26
JP25
JP24

JP23

VRE 3.4V - 3.6V

(Jumpers)

III. INSTALLATION

ASUS P/I-P55SP4V User’s Manual 9

III. INSTALLATION

(Jumpers)

III. INSTALLATION

5. CPU External (BUS) Frequency Selection (JP5, JP6, JP7)

These jumpers tells 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).

6. CPU to BUS Frequency Ratio (JP11, JP12)

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.

1 2 3

J P 5
J P 6

J P 7

5 0 M H z

C P U E x t e r n a l C l o c k ( B U S ) F r e q u e n c y S e l e c t i o n

J P

J P 1

1

1

2

1
2
3

1 . 5 x ( 3 / 2 ) 2 . 0 x 2 . 5 x ( 5 / 2 ) 3 . 0 x

C P U : B U S F r e q u e n c y R a t i o ( 1 . 5 x , 2 . 0 x , 2 . 5 x , 3 . 0 x )

J P 5
J P 6
J P 7

J P

J P 1

1

1

2

1 2 3

5 5 M H z

1
2
3

J P 5
J P 6

J P 7

J P

J P 1

1

1

2

1 2 3

6 0 M H z

1
2
3

J P 5
J P 6
J P 7

J P

1

1

1 2 3

6 6 M H z

J P 1

2

1
2
3

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

(BUS Freq.) (Freq. Ratio)

CPU Model Freq. Ratio (BUS Freq.) JP5 JP6 JP7 JP11 JP12

Intel Pentium 200MHz 3.0x 66MHz [1-2] [1-2] [1-2] [2-3] [1-2]
Intel Pentium 180MHz 3.0x 60MHz [1-2] [1-2] [2-3] [2-3] [1-2]
Intel Pentium 166MHz 2.5x 66MHz [1-2] [1-2] [1-2] [2-3] [2-3]
Intel Pentium 150MHz 2.5x 60MHz [1-2] [1-2] [2-3] [2-3] [2-3]
Intel Pentium 133MHz 2.0x 66MHz [1-2] [1-2] [1-2] [1-2] [2-3]
Intel Pentium 120MHz 2.0x 60MHz [1-2] [1-2] [2-3] [1-2] [2-3]
Intel Pentium 100MHz 1.5x 66MHz [1-2] [1-2] [1-2] [1-2] [1-2]
Intel Pentium 90MHz 1.5x 60MHz [1-2] [1-2] [2-3] [1-2] [1-2]
Intel Pentium 75MHz 1.5x 50MHz [1-2] [2-3] [2-3] [1-2] [1-2]

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

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

*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+ -S CPU at 133MHz with
the Cyrix 166+ installed on this motherboard.

ASUS P/I-P55SP4V User’s Manual10

III. INSTALLATION

Cyrix CPU Identification

The 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.

(Cyrix CPU Identify)

III. INSTALLATION

ASUS P/I-P55SP4V User’s Manual 11

III. INSTALLATION

2. System Memory (DRAM & SRAM)

This motherboard supports four 72-pin SIMMs of 4MB, 8MB, 16MB, 32MB, or
64MB to form a memory size between 8MB to 256MB. The DRAM can be either
60ns or 70ns Fast Page Mode (Asymmetric or Symmetric) or EDO.

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

Bank Memory Module Total Memory
Bank 0 4MB, 8MB, 16MB, 32MB, 64MB x2
SIMM Sockets 1&2 72-pin FPM or EDO SIMM

III. INSTALLATION

(Memory)

Bank 1 4MB, 8MB, 16MB, 32MB, 64MB x2
SIMM Sockets 3&4 72-pin FPM or EDO SIMM

Total System Memory (Max 256MB) =

IMPORTANT: Memory setup is r equired in "Auto Configuration" in the
CHIPSET FEATURES SETUP of Section IV BIOS software.

IMPORTANT: Each bank 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-P55SP4V User’s Manual12

III. INSTALLATION

DRAM Memory Installation Procedures:

1. The SIMM memory modules will only fit in one orientation as shown because
of a "Plastic Safety Tab" on one end of the SIMM sockets which requires the
"Notched End" of the SIMM memory modules.

4321

Bank1 Bank0

Notched End

72 Pin SIMM DRAM Sockets & Module

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.

72 Pin DRAM in SIMM Socket

Metal Clip

Plastic Safety Tab (This Side Only)

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

Mounting Hole

(DRAM Memory)

III. INSTALLATION

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

ASUS P/I-P55SP4V User’s Manual 13

III. INSTALLATION

(This page was intentionally left blank)

ASUS P/I-P55SP4V User’s Manual14

III. INSTALLATION

3. Central Processing Unit (CPU)

The motherboard provides a 321-pin ZIF Socket 7 that is backwards compatible
with ZIF Socket 5 processors. The CPU that came with the motherboard should
have a fan attached to it to prevent overheating. If this is not the case then purchase
a fan before you turn on your system. Apply thermal jelly to the CPU top and then
install the fan onto the CPU. Orientate the fan so that the heat sink fins allow air
flow to go across the onboard heat sink(s) instead of the expansion slots.

WARNING: Without a fan, the CPU and motherboard heatsink(s) can over­heat and cause damage to both the CPU and the motherboard.

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.

(CPU)

III. INSTALLATION

IMPORTANT: You must set jumpers for "BUS Frequency Selection" and
jumpers for "CPU to BUS Frequency Ratio" on page 10 depending on the CPU
that you install.

Lever
Lock

Blank

ZIF Socket 7 with Pentium Processor

White Dot

ASUS P/I-P55SP4V User’s Manual 15

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.

First read your expansion card documentation on any hardware and
software settings that may be required to setup your specific card.

NOTE: PCI Slot 4 has a MediaBus extension 2.0 (see page 18) which allows the
installation of a PCI card or a MediaBus card (optional multifunctional card) but
not both.

III. INSTALLATION

(Expansion Cards)

Expansion Card Installation Procedure:

III. INSTALLATION

1. Read the documentation for your expansion 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 card’s 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.

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 card’s jumpers manually and then install it in any available slot
on the ISA bus. You may use Microsoft's Diagnostic (MSD.EXE) utility included

ASUS P/I-P55SP4V User’s Manual16

III. INSTALLATION

in the W indows directory to see a map of your used and free IRQs. For W indows 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.

T o 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.

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 PCI and PNP configuration section of the BIOS Setup utility.

IMPORT ANT : In BIOS setup page 40, you should choose "Yes" for those IRQ's
and DMA's you wish to reserve for Legacy (Non-PnP) ISA cards, otherwise
conflicts may occur.

(DMA Channels)

III. INSTALLATION

ASUS P/I-P55SP4V User’s Manual 17

ASUS MediaBus Card

MediaBus allows a cost-efficient solution to a complete multimedia
system. The advantages of using one add-on card is to reduce the slot
requirements and compatibility problems in order to maximize the Plug and Play
advantages. The add-on card inserts into the shared PCI 4 / MediaBus 2.0 Slot.

NOTE: This motherboard uses MediaBus Rev. 2.0. The previous
MediaBus cards designed for MediaBus Rev . 1.2 will not fit into the MediaBus
Rev 2.0 that is on this motherboard.

The difference between Rev. 1.2 and Rev. 2.0 is that the later revision has 72 pins
instead of 68 pins so it does not have to use any PCI slot signals reserved for PCI
cards, therefore the motherboard's PCI Slot 4 can meet standard specifications. The
gap between the MediaBus extension and the PCI Slot 4 has been increased from

0.32" to 0.40" in order to prevent Rev . 1.2 MediaBus cards from being installed into

III. INSTALLATION

(MediaBus Card)

the new motherboards and vice versa.

III. INSTALLATION

The following are MediaBus cards designed for MediaBus 2.0 that can be used on
this motherboard:

• PCI-AS2940UW Ultra Fast/Wide SCSI & Audio MediaBus Card

• PCI-AV264CT-N PCI Audio & Video MediaBus Card

• PCI-AV264VT PCI Audio & Video MediaBus Card

• PCI-AV264GT PCI Audio & Video MediaBus Card

• PCI-AV264GT/Plus PCI Audio & Video MediaBus Card

The following are MediaBus cards designed for MediaBus 1.2 and
therefore cannot be used on this motherboard:

• PCI-AS7870 Fast/Wide SCSI & Audio MediaBus Card

• PCI-AV264CT PCI Audio & Video MediaBus Card

• PCI-AV868 PCI Audio & Video MediaBus Card

* All the above Audio features Creative Technology, Ltd.
* All the above Video features ATI, Inc. (AV868 Video features S3, Inc.)
* All the above SCSI features Adaptec, Inc.

ASUS P/I-P55SP4V User’s Manual18

III. INSTALLATION

5. External Connectors

WARNING: Some pins are used for connectors or power sources. These are
clearly separated from jumpers in "Map of the Motherboard" on page 4. 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.

1. Keyboard Connector (5-pin female)

This connection is for a standard IBM-compatible keyboard. May also be
known as a 101 enhanced keyboard.

Onboard Keyboard Connector (5-pin female)

Connector Plug from Keyboard

2. Video + PS/2 Mouse Connector (16-pin card)

The following video + PS/2 mouse card connects to the motherboard on the
first slot opening nearest the keyboard connector. Remove the slot cover and
insert this card. Mount the card's bracket to the case using the screw from the
slot cover. The card will then be available for a monitor and PS/2 mouse.

6 Pin (female)
PS/2 Mouse Connector

15 Pin (female)
Video Connector

(Connectors)

III. INSTALLATION

Video+PS/2 Mouse Card

ASUS P/I-P55SP4V User’s Manual 19

16 Pin Connector

III. INSTALLATION

III. INSTALLATION

3. Parallel port (Printer) Connector (26 Pin Block)

Connection for the included parallel port ribbon cable with mounting bracket.
Connect the ribbon cable to this connection and mount the bracket to the case
on an open slot. It will then be available for a parallel printer cable. Note:
Serial printers must be connected to the serial port. You can enable the parallel
port and choose the IRQ through BIOS Setup on page 36 "Onboard Parallel
Port". (Pin 26 is removed to prevent inserting in the wrong orientation

when using ribbon cables with pin 26 plugged).

Pin 1

(Connectors)

Onboard Parallel (Printer) Connector

4. Serial port (COM1 and COM2) connectors (Two 10-pin blocks)

These connectors support the provided serial port ribbon cables with mounting
bracket. Connect the ribbon cables to these connectors and mount the bracket
to the case on an open slot. The two serial ports on the mounting bracket will
then be used for pointing devices or other serial devices. See page 35 for
BIOS configuration of "Onboard Serial Port". (Pin 10 is removed to prevent

inserting in the wrong orientation when using ribbon cables with pin 10
plugged).

COM 1

Pin 1

COM 2

Pin 1

Onboard Serial Port Connectors

ASUS P/I-P55SP4V User’s Manual20

III. INSTALLATION

5. 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).

Pin 1

Floppy Drive Connector

6. Power connector (12-pin block)

This connector connects to a standard 5 Volt power supply. To connect the
leads from the power supply , ensure first that the power supply is not plugged.
Most power supplies provide two plugs (P8 and P9), each containing six wires,
two of which are black. Orient the connectors so that the black wires are
located in the middle.

Using a slight angle, align the plastic guide pins on the lead to their receptacles
on the connector. Once aligned, press the lead onto the connector until the
lead locks into place.

+5V

-12V

-5V

PG

+12V

GND

+5V

P8

P9

ORG
RED
YLW
BLU
BLK
BLK
BLK
BLK
WHT
RED
RED
RED

(Connectors)

III. INSTALLATION

Power Connector
on Motherboard

Power Plugs from
Power Supply

ASUS P/I-P55SP4V User’s Manual 21

III. INSTALLATION

(Connectors)

III. INSTALLATION

7. 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. You may also
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. BIOS now supports SCSI device or IDE CD-ROM bootup (see
"HDD Sequence SCSI/IDE First" & "Boot Sequence" in the BIOS FEA TURES
SETUP of the BIOS software) (Pin 20 is removed to prevent inserting in

the wrong orientation when using ribbon cables with pin 20 plugged).

Pin 1

Secondary IDE Connector

Primary IDE Connector

8. IDE activity LED (IDE_LED)

This connector connects to the hard disk activity indicator light on the system
cabinet.

+

IDE_LED

IDE Activity LED

ASUS P/I-P55SP4V User’s Manual22

III. INSTALLATION

9. Turbo LED lead (CON1)

The motherboard's turbo function is always on. The turbo LED connection is
labeled here but the LED will remain constantly lit while the system power is
on. You may wish to connect the Power LED from the system case to this lead.
See the figure below.

10. SMI suspend switch lead (CON1)

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 wake-up (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 should be on the default setting of Enable.

11. Reset switch lead (CON1)

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. See the figure below.

12. Keyboard lock switch lead & Power LED lead (CON1)

This 5-pin connector uses 3-pins for the case-mounted key switch for
locking the keyboard to prevent unwanted users. Two of the 5-pins are used
for the case-mounted power LED. See the figure below.

13. Speaker connector (CON1)

This 4-pin connector connects to the case-mounted speaker.

Turbo or
Power LED

SMI Lead

Reset SW

+5V
GND

GND

GND

+5V

Power LED &

NC
GND
LOCK

Keyboard Lock

GND

+5V

Speaker

GND
GND

Connector

SPKR

(Connectors)

III. INSTALLATION

System Case Connections

ASUS P/I-P55SP4V User’s Manual 23