ECS P5SJ-A User Manual

P5SJ-A Mainboard

User ’s Manual

P5SJ-A User’s Manual

Table Of Contents – II

FCC & DOC ComplianceFCC & DOC Compliance

FCC & DOC Compliance

FCC & DOC ComplianceFCC & DOC Compliance

Federal Communications Commission StatementFederal Communications Commission Statement

Federal Communications Commission Statement

Federal Communications Commission StatementFederal 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 the 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 the 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.
WW

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ning!ning!

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ning! The use of shielded cables for the connection of the monitor to the graphics

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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.

ning!ning!

Canadian DeparCanadian Depar

Canadian Depar

Canadian DeparCanadian Depar

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.

Version 2.2

Copyright © October 1997 All rights reserved

This publication may not be copied, reproduced, translated, transmitted or reduced to
any printed or electronic medium or to any machine readable form, or stored in a retrieval
system, either in whole or in part without the written consent of the copyright holders.

The contents of this publication are subject to change. The manufacturer reserves the
right to alter the contents of this publication at any time and without notice. The contents of
this publication may contain inaccuracies or typographical errors and is supplied for infor­mational use only.

Products are noted in this publication for identification purposes only. Microsoft is a
registered trademark and Windows is a trademark of Microsoft Corporation. Pentium is a
trademark of Intel Corporation. All other product names or brands may be trademarks or
registered trademarks of their respective holders.

tment of Communications Statementtment of Communications Statement

tment of Communications Statement

tment of Communications Statementtment of Communications Statement

P5SJ-A User’s Manual

Table Of Contents – III

1: P5SJ-A Package & Product Information............. 1.1

About This Manual....................................................................... 1.1

Package Contents............................................................... 1.3

Mainboard Features ........................................................... 1.4

Component Information ..................................................... 1.6

Expansion Cards & Slots.............................................................. 1.6

Memory Sockets & Modules ....................................................... 1.7

CPU Socket & CPU ....................................................................... 1.7

Port & Controller Connections ..................................................... 1.7

2: Using Your Mainboard ....................................... 2.1

System Controls.................................................................. 2.1

Hardware Controls & Indicators ................................................. 2.1

CMOS Setup Utility Controls......................................................... 2.3

Hardware Features............................................................. 2.6

Onboard Ports.............................................................................. 2.6

Connectors ...................................................................................2.6

Optional Hardware...................................................................... 2.8

Firmware & Software.......................................................... 2.9

How To Use The CMOS Setup Utility............................................ 2.9

Clearing CMOS............................................................................. 2.9

Flashing The BIOS......................................................................... 2.11

Bus Master Drivers....................................................................... 2.11

Video Drivers ................................................................................2.11

Disabling Onboard Video Display Card...................................... 2.11

3: Reconfiguring Your Mainboard .......................... 3.1

Installing Expansion Cards .................................................. 3.1

ISA Cards & Slots.......................................................................... 3.1

Configuring Expansion Card Resources In CMOS Setup............3.2

Adding System Memory ..................................................... 3.5

Memory Configurations............................................................... 3.6

P5SJ-A User’s Manual

Table Of Contents – IV

Installing A CPU Upgrade ................................................... 3.9

The Basic Procedure ....................................................................3.9

Configuring External Clock Speed & Factor ................................3.10

Configuring CPU Voltage............................................................. 3.10

CPU Jumper Tables & Illustrations .............................................. 3.12

Adding An IDE Peripheral.................................................... 3.16

IDE Transfer Modes ...................................................................... 3.16

Installing IDE Devices....................................................................3.18

Adjusting Display Memory.................................................. 3.19

4: P5SJ–A Reference Information.......................... 4.1

Using This Section............................................................... 4.1

Jumper Configuration Summary......................................... 4.3

Supported CPUs.................................................................. 4.10

Interpreting CPU Markings ..........................................................4.11

System Memory Specifications........................................... 4.13

Memory Configurations............................................................... 4.13

CMOS Setup Utility Summary ............................................. 4.14

Using the CMOS Setup Utility.......................................................4.14

Accessing The CMOS Setup Utility...............................................4.14

Standard CMOS Setup ................................................................. 4.18

BIOS Features Setup..................................................................... 4.22

Chipset Features Setup................................................................ 4.27

Power Management Setup .........................................................4.29

PNP/PCI Configuration................................................................. 4.34

P5SJ-A User’s Manual

1: Package & Product Information – 1.1

In This Section:

About This Manual
Package Contents
Component Information

1: P5SJ-A Package & Product Information

This manual contains all the information you’ll need to use
the P5SJ-A mainboard. Please take a moment to familiarize your­self with the design and organization of the manual.

About This Manual

This manual is divided into four sections:

• Section 1: Package & Product Information

A brief overview of what comes in the mainboard package, its

basic features, layout and component information.

• Section 2: Using Your Mainboard

Information on mainboard features that you may make use of

in operating your computer.

• Section 3: Reconfiguring Your Mainboard

How to change or upgrade the mainboard configuration.

• Section 4: Reference Information

A summary of the mainboard’s settings and specifications.

P5SJ-A User’s Manual

1: Package & Product Information – 1.2

The manual uses some icons to call your attention to impor­tant information. The icons appear in the sidebar and represent
the following:

G

C

D

N

• Important information

• A recommendation or good idea

• A warning or bad idea

• Danger warning

Online Manual Format

If the support disk for your mainboard is a CD-ROM disc, a
copy of the printed manual may be stored on the disc in Adobe
Acrobat format. If so, it requires Adobe Acrobat Reader version

3.0 or later to view it. Acrobat Reader for Microsoft Windows95
may also be supplied on the Support Disk. If not, you can obtain
a free copy of the Reader software from the Abobe web site which
is currently at www.adobe.com as well as other locations.

If you have the online manual, you may want to install Acro­bat Reader on your system hard disk. You can copy the manual
over as well so that the manual is readily available without hav­ing to hunt up the Support Disk when you want to view it.

If you are unfamiliar with Acrobat Reader, please take a mo­ment to view the Reader Online Guide which is available under
the Help menu when you run Reader.

P5SJ-A User’s Manual

1: Package & Product Information – 1.3

Package Contents

The P5SJ–A mainboard package contains the following items,
as noted in the Quick Installation Guide. We’ve listed them here
again for your convenience. Please inspect the package contents
and confirm that everything is there. If anything is missing or
damaged, call your vendor for instructions before proceeding.
The package includes:

• P5SJ–A Mainboard

• Cable Pack:

– 1 Floppy Controller Cable

– 1 IDE Controller Cable

– 1 VGA Port Bracket with attached cable (SIS 5598 model)

• Optional Hardware:

– External USB dual-port bracket

• Support CD:

– IDE Bus Master Drivers

– Display Drivers

The SIS VGA display comes with drivers for a wide range of
Operating Systems. These are organized in individual folders. In
each folder there is a “readme” file that explains how to install
the driver. Please locate the folder for the driver you need and
check this file.

G

P5SJ–A Models

There are two P5SJ–A main­board models. One has an
onboard video display fea­ture – SIS5598, the other –
SIS5582– does not. If you
have the model with the
onboard display feature, it
comes with an external VGA
port bracket with an attached
cable that connects to the
mainboard. Other than this
feature, the two models are
the same.

You can tell which model you
have by looking at the big
green heat sink in the middle
of the board. The SIS chip
number is printed on it.

P5SJ-A User’s Manual

1: Package & Product Information – 1.4

Mainboard Features

This mainboard is a highly integrated Mini-ATX design that

incorporates many features on the board. The mainboard includes
the following features:

• Socket 7 CPU socket supports Pentium and compatible CPUs
up to 266MHz

• SIS5598 or 5582 (non-VGA) single chip solution

• Super I/O chip

• Integrated SIS VGA display (optional)
– Uses system memory for display memory
– Display drivers for multiple Operating Systems

• 256KB or optional 512KB Pipeline Burst SRAM Level 2 cache

• 4 SIMM memory module sockets:
– SIMMs: 5V EDO or Fast Page DRAM
– SIMMs in two banks SIM1/2, SIM3/4
– Supports up to 256MB

• Onboard Connectors
– Primary & Secondary EIDE channels, Ultra DMA support
– Floppy disk drive connector for two drives
– Optional Infrared module connector

• External Ports
– Two USB ports on optional port bracket
– COM1 & COM2 serial ports, enhanced Parallel port
– PS/2 Mouse & Keyboard connectors

• Expansion Card Slots
– Four PCI 2.1–compliant PCI slots
– Three 16-bit ISA slots

P5SJ-A User’s Manual

1: Package & Product Information – 1.5

P5SJ-A Mainboard Layout

ISA Slots 1 2 3

PCI Slots 4 3 2 1

IR Port

The model shown above

G

uses the SiS5598 chip with
heatsink and has the VGA
port connector and jumpers
onboard. The 5582 model
does not have these compo­nents onboard.

USB Port

Case Features

VGA Port

Battery

COM2

SIMM4

SIMM2

SiS

IDE 2
IDE 1

Printer

KB/Mouse

SIMM3
SIMM1

Socket 7

5598

CPU Socket 7

Floppy

Jumper & Connectors

The illustration above shows
the connectors, sockets and
ports on the mainboard.
The VGA Port is a connector
for the external VGA port
bracket.
The USB Port is a connector
for the optional external dual
USB port bracket.
The IR Port is a connector for
an optional IrDA–compatible
infrared port module.

COM1

Power

Fan Power

Wake Up

P5SJ-A User’s Manual

1: Package & Product Information – 1.6

Component Information

This section is a brief description of the components on the

mainboard that you might need to know about if you want to
upgrade or change your system configuration. If your mainboard
is already installed in a system, it isn’t necessary for you to re­view this section.

This mainboard uses the Mini-A TX ‘form factor’, a design that

integrates many features onto the board including some number
of external ports.

Expansion Cards & Slots

The mainboard has seven expansion slots for system expan-

sion or ‘add-on’ cards. Three of them are ISA slots, the other four
are PCI slots. When you get an expansion card, it must use one of
these to connect to the computer.

The ISA expansion slots are a legacy of the original IBM PC/

A T design. They are 16-bit slots that run at a moderate bus speed.
There are many kinds of expansion cards that use this slot design
to connect to the computer, some of the most common being
sound and modem cards.

PCI slots are the current high-speed 32-bit standard for sys-

tem expansion cards. They operate at a faster speed and have a
greater data throughput than ISA cards.

Expansion cards often make use of system resources, which

requires managing the system resource configuration. Most newer
expansion cards support the ‘Plug and Play’ standard that allows
an Operating System like Windows95 to automatically detect
them and configure system resources as needed. Some older ISA
designs may not support this standard and may therefore require
manual configuration. You should consult the specifications or
documentation for a card to determine if this is the case and what
needs do be done to properly configure the card.

P5SJ-A User’s Manual

1: Package & Product Information – 1.7

Memory Sockets & Modules

There are four memory module sockets on the mainboard.
They use 72-pin SIMM memory modules. The sockets are paired
into two ‘banks.’ This means you must install two modules at a
time. This mainboard has a very flexible memory design that al­lows the use of a variety of memory options up to a total of
256MB. There is more information about this in ‘Adding System
Memory’ section of Section 3: Reconfiguring Your Mainboard.

CPU Socket & CPU

The Socket 7 CPU socket supports the full range of Pentium®­class CPUs including MMX Pentiums
socket is easy . The lever at the side of the socket latches the CPU
in place when it is down and releases it when raised.

If you want to install a CPU upgrade or are installing a CPU
on the board for the first time, please refer to ‘Installing a CPU’ in
Section 3: Reconfiguring Your Mainboard.

Port & Controller Connections

This mainboard has two external Serial ports, one Parallel port
and a PS/2-type keyboard and mouse port built onto the board.
There are also several connectors built onto the board. There are
connectors for four IDE devices in two ‘channels’ and for two
floppy disk drives. There are also some connectors on the board
for some system case features and a CPU cooling fan.

In addition, there is a connector for an optional external double
USB (Universal Serial Bus) port bracket that is an option for this
mainboard. If you have the version of this mainboard that has
the onboard video display card, there is also a connector for an
external VGA port bracket.

Details about these connectors are in Section 4: Reference In­formation.

®

. Installing a CPU in the

P5SJ-A User’s Manual

1: Package & Product Information – 1.8

P5SJ-A User’s Manual

2: Using Your Mainboard – 2.1

In This Section:

System Controls
Hardware Features
Firmware & Software

2: Using Your Mainboard

This section covers the following topics:

• System Controls & Indicators

• Hardware Features

• Firmware & Software

They go over the system control features and status indicators
that derive from the mainboard and explain the software that
comes with or is built-into the mainboard

System Controls

There are two topics in this section, a explanation of the hard­ware controls and status indicators that connect from the main­board to your system case and some information about the parts
of the CMOS Setup Utility that allow you customize some sys­tem features.

Hardware Controls & Indicators

There are some control features and status indicators that con­nect from the mainboard to your system case, which is some­times called the ‘Enclosure’ or ‘Chassis.’ These are:

• Power Switch

• Power Status Indicator

• Suspend Switch

• Suspend Status Indicator

• Reset Switch

• Hard Disk Drive Activity Indicator

• Keyboard Lock

P5SJ-A User’s Manual

2: Using Your Mainboard – 2.2

All of these case features connect to the mainboard via con-

nector strip J7. Not all system cases have all of these features, so
your system may not have all of them. The functions and op­tions for these are shown in the table on the next page.

Hardware Controls & Indicators
Feature J7 Pins

Power Switch 19-20
Turns the system power on and of f. In some systems, push once for
Suspend, push for >4 seconds for Off.

Power Status LED 1-3
When lighted indicates that system is turned on

Suspend Switch 4-5
Puts the system into Suspend state under Operating Systems that support
this power management feature

Suspend LED 6-8
When lighted indicates that system is suspended

Reset Switch 9-10
Pressing the Reset switch restarts the system

HDD Activity 17-18
Flashes when hard disk drive is active

Keyboard Lock 11-12
Disables keyboard via a lock mounted on front panel of the case

P5SJ-A User’s Manual

2: Using Your Mainboard – 2.3

CMOS Setup Utility Controls

T wo sections of the CMOS Setup Utility allow you to config­ure how some of your system’s features work. These are:

• BIOS Features Setup

• Power Management Setup

The CMOS Setup Utility is a program that is permanently
stored in the BIOS chip on the mainboard. The utility creates a
system hardware configuration record that it stores in a small
amount of battery-supported memory on the board. The BIOS
uses this record to function as an interface between the system
hardware and the operating system. Most of the settings in the
CMOS Setup Utility are made automatically, so you won’t nor­mally need to use this program. You can, however, customize
some of the operational features to suit how you prefer to use
the program.

The screen illustrations on the next two pages show the Setup
Default settings for these two sections of the utility.

The CMOS Setup Utility Summary in Section 4: Reference
Information, lists the setting options for each section of the util­ity including the two noted above.

P5SJ-A User’s Manual

2: Using Your Mainboard – 2.4

CMOS Setup Utility –

BIOS Features Setup
This section of the setup utility
allows you to configure some
system features including Vi­rus Warning, Boot Sequence
and Security Option.
Virus Warning –
When enabled, monitors the
primary hard disk boot sector
and warns of any attempt to
write to it.

Boot Sequence –
Controls the order in which
the system checks disk drives
for a boot disk.
Security Option –
Sets the level of password
protection for the system.

P5SJ-A User’s Manual

2: Using Your Mainboard – 2.5

CMOS Setup Utility –

Power Management Setup
This section of the setup utility
allows you to configure the
power management features
supported by the BIOS. These
can also operate in tandem
with Operating System power
management features.

Y ou can use the Min Saving or
Max Saving default modes or
you can configure the power
management features indi­vidually in the User Define
mode.

P5SJ-A User’s Manual

2: Using Your Mainboard – 2.6

Hardware Features

This section is a brief overview of information about the

mainboard’s hardware features that connect to external devices.

Onboard Ports

There are five external ports on the mainboard. These are ports

standard to most personal computers:

• COM1 Serial Port
A high-speed serial port which can also be configured as the

COM3 port in the CMOS Setup Utility.

• COM2 Serial Port
A high-speed serial port which can also be configured as the

COM4 port in the CMOS Setup Utility.

• Parallel Port
The parallel port can be configured as a Standard, ECP or EPP

parallel port in the CMOS Setup Utility.

• PS/2 Keyboard Port

• PS/2 Mouse Port

Connectors

There are several connectors on the mainboard for connecting

additional ports and internal peripheral devices

• IDE 1 – Primary IDE Channel
Connector for the Primary Master and Slave IDE devices.

• IDE 2 – Secondary IDE Channel
Connector for the Secondary Master and Slave IDE devices.

• Floppy Connector
Connector for two floppy disk drives.

P5SJ-A User’s Manual

2: Using Your Mainboard – 2.7

CMOS Setup Utility –

Integrated Peripherals
This section of the setup utility
configures the IDE and Floppy
controllers and the settings for
the external ports
This section enables and con­figures the optional USB and
Infrared features.

The screen illustration shows
the settings when the Opti­mum Settings are loaded.

P5SJ-A User’s Manual

2: Using Your Mainboard – 2.8

Optional Hardware

There two feature connectors on the mainboard for optional

ports. These require optional external port hardware.

USB Ports

The USB1 connector on the mainboard supports two Univer-

sal Serial Bus ports. An optional external port bracket attaches to
the onboard connector via an attached cable.

With the optional port bracket installed you can attach USB

devices to the external ports. If the USB ports are installed, the
USB Controller line in the Integrated Peripherals section of the
CMOS Setup utility must be set to ‘Enabled’. USB ports may
also require Operating System support for USB devices.

IR Port

The onboard IR connector supports an Infra-Red port module

that enables wireless communication between the computer and
other computers and devices with infrared capability.

The port module is an optional component. If it is installed,

you must set the UART 2 line in the Integrated Peripherals sec­tion of the CMOS Setup utility to the appropriate IR mode used
by the module.

P5SJ-A User’s Manual

2: Using Your Mainboard – 2.9

Firmware & Software

The mainboard hardware is supported by both firmware and
software components. Firmware is software that is stored on a
chip on the board rather than on disk media.

The firmware component you interface with on this main­board is the CMOS Setup Utility. This utility establishes various
settings used by the BIOS, the basic software that is an interface
between the system hardware and software.

The software component is comprised of software drivers that
support the PCI IDE controller and the 5598 model onboard VGA
video display card.

How To Use The CMOS Setup Utility

The CMOS Setup Utility options are listed in detail in Section
4: Reference Information. This section is just a brief explanation
of how to run the program to adjust settings as noted in this and
the next section.

To run the CMOS Setup Utility, press the Del or Delete key
while the computer is starting up, before the operating starts to
load. The utility’s main screen will appear as shown on the next
page. To navigate the program, use the controls shown on the
screen. The utility has several sections. Many of the features con­figured by the utility are set to operate automatically when the
‘Setup Defaults’, the recommended mode, are used. With Setup
Defaults loaded you can still customize various settings.

Clearing CMOS

Under some unusual circumstances the configuration record
created by the CMOS Setup utility and stored on the mainboard
can become corrupted and unusable, possibly leading to the board
being unable to operate properly. If this happens, the CMOS
record can be cleared by setting jumper JP16 to the clear setting
for a moment and then setting it back to the Normal setting. Re­fer to Section 4 for more information.

P5SJ-A User’s Manual

2: Using Your Mainboard – 2.10

CMOS Setup Utility –

This is the main screen for the
setup utility from which you
access its various sections.
The function and use of each
section is covered in Section
4: Reference Information.

P5SJ-A User’s Manual

2: Using Your Mainboard – 2.11

Flashing The BIOS

This mainboard uses the Award BIOS. The BIOS is stored on
a programmable flash memory chip on the mainboard. Updates
to the BIOS can be installed by installing a new BIOS file on the
flash chip, which replaces the existing one. You do this using
software that comes on the Support Disk. There is an explana­tion of how to install a BIOS update in a ‘readme’ text file in­cluded with the program.

To install a BIOS update, you must set the JP20 ‘Flash Boot
Block’ jumper to ‘Enabled’ while installing the BIOS and then set
it back to the ‘Disable’ setting for normal operation.

Bus Master Drivers

This mainboard comes with software drivers, for various Op­erating Systems, that enable the PCI controller to operate in ‘Bus
Master’ mode. The drivers are on the Support Disk. The included
‘readme’ file has information on the drivers and installation in­formation.

Video Drivers

The 5598 model of this mainboard has an onboard SIS VGA
video display card. A wide variety of display drivers are provided
with the board to support various Operating Systems. When you
run the installation program you can view information about the
drivers and make selections on which to install.

A text file is included that describes the drivers provided.

Disabling Onboard Video Display Card

If you have the 5598 model of this mainboard and want to use
a different video display card you can disable the onboard SIS
VGA video display . T o do this you must set jumpers JP23, 24 and
25 to their ‘Disable’ settings. See Section 4 : Reference Informa­tion for more information.

P5SJ-A User’s Manual

2: Using Your Mainboard – 2.12

Jumper Settings Mentioned In This Chapter
Function Jumper Settings

Clear CMOS JP16 Normal 1-2 (D)

Clear 2-3

Flash Boot JP20 Disable 2-3
Block Enable 1-2 (D)

Onboard JP23,24,25 Enable JP23:1-2, JP24:2-3, JP25:1-2 (D)
VGA DisableJP23:2-3, JP24:1-2, JP25:2-3

P5SJ-A User’s Manual

3: Reconfiguring Your Mainboard – 3.1

In This Section:

Installing Expansion Cards
Adding System Memory
Installing A CPU Upgrade
Adding An IDE Peripheral

Adjusting Display Memory

3: Reconfiguring Your Mainboard

This section explains how to install new hardware on your
mainboard. It covers installing expansion cards, adding system
memory , changing the CPU and installing additional IDE periph­eral devices such as a hard disk or a CD-ROM drive.

Installing Expansion Cards

There are seven expansion card slots on the mainboard, three
ISA slots and four PCI slots. When you get an expansion card, it
will come with instructions on how to install it, so this section
covers relevant information from the mainboard side only.

ISA Cards & Slots

ISA expansion cards often use system resources in the form of
IRQs and DMA channels. Newer cards that comply with the Plug
and Play (PnP) standard are designed to allow the Operating Sys­tem to automatically configure system resources. Cards that do
not support PnP may require manual configuration of both the
card hardware and settings in the CMOS Setup Utility.

If you have a PnP-compliant card to install there should be
little to do other than follow the installation instructions. If, how­ever, you have a non-PnP car d and it requires configuring system
resources, you may need to review the third part of this section,
Configuring Expansion Card Resources In CMOS Setup.

P5SJ-A User’s Manual

3: Reconfiguring Your Mainboard – 3.2

PCI Cards & Slots

With very few exceptions, any PCI expansion card you are

likely to get will be Plug an Play compliant. If you are using an
Operating System that supports PnP, such as Windows 95, you
should be able to follow the installation instructions that come
with the card and have the Operating System automatically rec­ognize and configure the card.

The four PCI slots on the mainboard all have ‘Bus Master’

capability. For installed PCI cards to use this feature an Operat­ing System-specific Bus Master software driver that comes with
this mainboard must be installed under your Operating System.
These drivers are located on the Support Disk. There is more
information about them later in this section.

Configuring Expansion Card Resources In CMOS Setup

The CMOS Setup Utility , which is covered in detail in Section

4: Reference Information, has a section called PNP/PCI Configu­ration. The default settings in this section allow the Operating
System to automatically configure IRQ resources for PnP com­pliant ISA and PCI Cards.

If you need to install a non-PnP card, you will need to config-

ure any IRQ and DMA settings manually, both on the card and
in the CMOS Setup Utility . The following three pages show how
to do this.

Running CMOS Setup

To run the CMOS Setup utility,
press the Delete or the Del
key while your computer is
first starting up. Select the
‘PNP/PCI CONFIGURATION’
item on the main screen and
press the Enter key to open it.

When you are finished, press
the Esc key once to return to
the main screen and then
select ‘SAVE & EXIT SETUP’ and
press the Enter key to save the
new configuration. For more
information on this see Sec­tion 4: Reference Information.

P5SJ-A User’s Manual

3: Reconfiguring Your Mainboard – 3.3

CMOS Setup Utility –

PnP/PCI Configuration
This is the default screen for
this section when Setup De­faults are loaded. If you need
to manually configure the IRQ
settings, set the first item on
the screen to the ‘Manual’
setting. See the next page.

If you install an Operating Sys­tem that supports Plug and
Play, such as Windows95,
you should set the first line,
‘PNP OS Installed’ to ‘Yes’.

P5SJ-A User’s Manual

3: Reconfiguring Your Mainboard – 3.4

CMOS Setup Utility –

PnP/PCI Configuration
When ‘Resources Controlled
By’ is set to ‘Manual’ you can
individually configure the IRQ
& DMA channel settings. The
individual defaults are for PnP
cards and will still use all the
items listed to automatically
assign resources as needed.
If you are installing a ‘legacy’
ISA card that requires manual
configuration, you can manu­ally assign the required re­sources as needed.

This screen shows an ex­ample of a manually config­ured IRQ setting for a “Legacy’
ISA expansion card. Legacy
cards, by definition, are not
PnP compliant and must be
manually configured if they
require an IRQ or DMA chan­nel. See the card manual for
specifics.
When an item in the list is con­figured this way, it is no longer
part of the pool of automati­cally configurable resources.
For this reason, don’t config­ure ISA cards this way unless
they are Legacy cards.

P5SJ-A User’s Manual

3: Reconfiguring Your Mainboard – 3.5

Adding System Memory

There are some requirements you must follow if you want to
install system memory . The memory subsystem has four 72-pin
SIMM sockets divided into two banks, SIMM1 & SIMM2 and
SIMM3 & SIMM4. You must install SIMM modules in pairs us­ing the same type and speed of module in each bank. This main­board supports both Fast Page Mode (FPM) and EDO DRAM
modules. You can use module sizes from 2MB to 128MB, either
single or double-sided. The total supported memory capacity for
this mainboard is 256MB.

If your mainboard is already installed in a system, it will have
some amount of memory installed on the board. You can tell
how much by checking the configuration screen that appears
when the computer is starting up. With some memory installed,
there will be two sockets available to add additional memory.

It is possible to install more

D

memory than the board sup­ports, e.g. four 128MB SIMM
modules would total 512MB,
but the board would ignore
256MB of that. Do not install
more than 256MB on this
mainboard.

P5SJ-A User’s Manual

3: Reconfiguring Your Mainboard – 3.6

Memory Configurations

You can install any system memory combination as long as

you follow the basic requirement of installing identical modules
in both sockets of a bank, i.e.:

• All modules must be 5 Volt

• Same module memory capacity, e.g. 16MB (MegaBytes)

• Same DRAM memory type, e.g. EDO

• Same operating speed, e.g. 60ns (nanoseconds)
Other than these requirements, there is no limitation on the

variety of possible combinations, so they are not listed here.

Note: It is possible to install more memory than the board

supports, e.g. four 128MB modules would total 512MB, but the
board would ignore 256MB of that. Do not install more than

Memory Sockets

The picture above shows the
memory module sockets in
detail.
The SIMM sockets are num­bered SIM1 to SIM4 as noted.
You must install modules in
pairs in either sockets 1 & 2 or
3 & 4.
Modules snap into place and
are held in position by a re­taining clip at each end of the
SIMM socket.

When you want to remove a
module, press on the retain­ing clips to release the mod­ule from the socket.

P5SJ-A User’s Manual

3: Reconfiguring Your Mainboard – 3.7

SIMM4

SIMM2

Retaining Clips

SiS

5598

SIMM3
SIMM1

Socket 7

P5SJ-A User’s Manual

3: Reconfiguring Your Mainboard – 3.8

256MB on this mainboard.

Installing Memory Modules

To install a module, inset it into the socket at about a 45°

angle and then push it up into the retaining clips so that it snaps
in place and is at a 90° angle to the board. Modules are designed
so that they will only insert in one orientation. If you have trouble
inserting the connector edge of the module into the socket, it
may be oriented the wrong way. Turn the module around and try
again. You shouldn’t need to force it.

If All Sockets Are Occupied

If you want to install more memory and there are no sockets

available, you must remove some installed modules and replace
them with the upgrade modules.

If you have to do this, make sure to identify what type of

memory is already installed. In some cases, there may be a mix
of module types. You can tell this by checking the configuration
screen that appears while the computer is starting up. Press the
Pause key to temporarily interrupt the start-up process while the
screen is visible so that you have more time to read it. When
you’re done press any key to resume.

Remove the lowest performance and smallest size modules

and replace them with the upgrade. For example, if you have the
following configuration and you plan to install two 16MB EDO
modules:

• SIMM 1 & 2: 8MB Fast Page mode modules

• SIMM 3 & 4: 8MB EDO modules
You should remove the two 8MB FP modules because they

are lower performance and replace them with the memory up­grade, resulting in the greatest performance gain.

P5SJ-A User’s Manual

3: Reconfiguring Your Mainboard – 3.9

Installing A CPU Upgrade

If you are installing this mainboard it will not have a CPU
installed unless your vendor installed one when you purchased
the board. If the mainboard is installed in a system, there will
already be a CPU installed. In either case the information and
procedure for installing a CPU is the same. Since the more likely
scenario is that you are installing an upgrade, this section assumes
that is what you are doing.

The Basic Procedure

To install a CPU on this mainboard you need to set up the
board for a specific CPU by doing the following:

• Set the External Clock Speed

• Set the Clock Multiplier Factor

• Set the CPU Voltage

You configure the CPU settings by adjusting jumper settings
on the board. In order to do this, you will need to know some
information about the CPU you plan to install. This should be
provided by the CPU vendor or by the vendor you buy the chip
from. You’ll need the following information:

• CPU Internal Clock Speed

• CPU Voltage

The internal clock speed is the speed the CPU operates at to
process data and is the one used by CPU manufacturers to indi­cate the speed of the chip, for example, a 133MHz Intel Pentium
The CPU also has an external clock speed which is the speed at
which it interacts with external components.

CPU voltage may either be the same internally and externally
or it may be split, depending on the CPU design. Some proces­sors use one voltage for the ‘core’ (Vcore) and another for input/
output (Vio).

®

.

P5SJ-A User’s Manual

3: Reconfiguring Your Mainboard – 3.10

Configuring External Clock Speed & Factor

To configure the board for a CPU’s internal clock speed, you

have to set the external clock speed (sometimes referred to as the
bus speed) and the clock factor so that the result is the internal
clock speed of the CPU you are installing. For example, the de­fault setting for these is:

66.6MHZ [external clock] x 2.0 [clock factor] =133.2MHz
or, an effective setting of 133MHz.
Since the internal clock speed the CPU is supposed to operate

at is fixed, the two factors, external clock and clock factor, are the
variables. The CPU manufacturer or vendor’s information should
tell you what these factors should be.

P Rated CPUs

Cyrix, IBM and AMD all make Pentium®-class CPUs that are

performance rated at an Intel Pentium
tually have a slower internal clock speed. This ‘P’ rating is used
to indicate the CPU’s performance rather than its internal clock
speed. For example, the Cyrix/IBM P166 has an actual internal
clock speed of 133MHz. If you install a CPU of this type, make
sure you set the mainboard for the actual internal clock speed of
the CPU, not its P rating.

®

equivalent speed but ac-

Configuring CPU Voltage

The CPU voltage specification should also be provided in in-

formation from the manufacturer or vendor. Standard Pentium
CPUs are single voltage. MMX Pentiums® are dual-voltage. You
should set the CPU Voltage jumpers according to the specifica­tions you get with the CPU.

®

P5SJ-A User’s Manual

3: Reconfiguring Your Mainboard – 3.11

CPU Settings

Internal Clock External Clock Clock Factor

Intel Pentium CPUs (Including MMX)
75MHz 50MHz x 1.5
90MHz 60MHz x 1.5
100MHz 66.6MHz x 1.5
120MHz 60MHz x 2.0
133MHz 66.6MHz x 2.0
150MHz 60MHz x 2.5
166MHz 66.6MHz x 2.5
200MHz 66.6MHz x 3.0
233MHz 66.6MHz x 3.5

Cyrix/IBM CPUs
6X86 & 6X86L –
P120+ (100MHz) 50MHz x 2.0
P133+ (110MHz) 55MHz x 2.0
P150+ (120MHz) 60MHz x 2.0
P166+ (133MHz) 66.6MHz x 2.0
P200+ (150MHz) 75MHz x 2.0
6X86MX –
PR166 (150MHz) 60MHz x 2.5
PR200 (166MHz) 66.6MHz x 2.5
PR233 (200MHz) 66.6MHz x 3.0
PR233 (188MHz) 75MHz x 2.5
PR266 (225MHz) 75MHz x 3.0

AMD CPUs
K5
PR75 (75MHz) 50MHz x 1.5
PR90 (90MHz) 60MHz x 1.5
PR100 (100MHz) 66.6MHz x 1.5
PR120 (120MHz) 60MHz x 2.0
PR133 (133MHz) 66.6MHz x 2.0
PR150 (150MHz) 60MHz x 2.5
PR166 (166MHz) 66.6MHz x 2.5
K6
PR166 (166MHz) 66.6MHz x 2.5
PR200 (200MHz) 66.6MHz x 3.0
PR233 (233MHz) 66.6MHz x 3.5

P5SJ-A User’s Manual

3: Reconfiguring Your Mainboard – 3.12

CPU Jumper Tables & Illustrations

The next few pages show the CPU jumper settings. The set-

tings are listed in the tables as follows:

• Where two pins are shorted (connected) by a jumper cap on a
three-or-more-pin jumper the shorted pins are listed, e.g. 1-2

or

• For a two-pin jumper, On, if the cap is in place, and Off, if the
cap is not in place.

In the jumper illustrations, the Pin 1 position is shaded and

the jumpers, shown in a “bird’s eye” view, look like this:

A jumper with a cap in position looks like this:

The default settings are noted in the tables.

C

In practice, for an Off setting
on a two-pin jumper, place
the cap over one pin so that it
doesn’t get lost.

P5SJ-A User’s Manual

3: Reconfiguring Your Mainboard – 3.13

CPU Jumper Settings
Function Jumper Settings

External JP12–JP15 50MHz 12:2-3, 13:2-3, 15:2-3
Speed 55MHz 12:2-3, 13:2-3, 15:1-2

60MHz 12:2-3, 13:1-2, 15:2-3

(D) 66.6MHz 12:1-2, 13:2-3, 15:2-3

75MHz 12:2-3, 13:1-2, 15:1-2

83.3MHz 12:1-2, 13:2-3, 15:1-2
*The 2-3 setting for JP14 sets the PCI bus clock to 32MHz for all speeds.
The 1-2 setting sets it to one half the external clock speed.

Internal Clock JP18 1.5x BF0:1-2BF1: 1-2
Factor (D) 2.0x BF0:2-3BF1: 1-2

2.5x BF0:2-3BF1: 2-3

3.0x BF0:1-2BF1: 2-3

3.5x BF0:1-2BF1: 1-2

4.0x BF0:2-3BF1: 1-2 BF2: 2-3
I/O Voltage JP6 (D) STD 3.3V 1-2

VRE 3.52V 3-4

Core Voltage JP22 1-2 3-4 5-6 7-8
On= Cap On (D) 2.14V On
Off= Cap Off 2.54V On On

2.84V On

2.94V On On

3.24V On On

3.34V On On On

3.54V On On On On

P5SJ-A User’s Manual

3: Reconfiguring Your Mainboard – 3.14

JP12, 13, 15: External Clock Speed

JP12JP15

50MHz

55MHz

60MHz

66.6MHz

75MHz

83.3MHz

JP18: Internal Clock Factor

BF0

BF1

BF2

1.5x

2.0x

2.5x

3.0x

3.5x

4.0x

JP6: CPU I/O Voltage (Vio)

42

STD 3.3V

31
42

VRE 3.52V

31

P5SJ-A User’s Manual

3: Reconfiguring Your Mainboard – 3.15

JP12-

JP15

SiS

5598

JP6

JP22

Socket 7

JP18

Jumper Locations

The illustration above shows
the location of the CPU jump­ers shown on these pages.

JP22: CPU Core Voltage (Vcore)

82

2.14V

71

2.54V

2.84V

2.94V

3.24V

3.34V

3.54V

P5SJ-A User’s Manual

3: Reconfiguring Your Mainboard – 3.16

Adding An IDE Peripheral

This section covers some aspects of installing internal IDE pe­ripheral devices as they relate to the mainboard. The onboard
Enhanced IDE controller supports up to four devices, two per
IDE channel. The primary hard disk drive in most systems is an
IDE device. You may want to install more hard disks, a CD-ROM
drive or combination of these and other devices. This mainboard
supports both PIO and UltraDMA modes, which it can detect
automatically. You can install a mix of devices. With the Setup
Defaults loaded in the CMOS Setup utility , the system will auto­matically detect and configure multiple devices of whatever mode.

IDE Transfer Modes

Hard disk read and write operations are executed via the main­board chipset. The transfer of data between the hard disk and the
system takes place using one of a number of transfer modes –
either one of several PIO modes or UltaDMA mode.

Although there are several PIO Modes (0 through 4), and this
mainboard supports all of them, most current hard disk and CD­ROM drives use either Mode 3 or 4. The greater the mode num­ber, the faster the transfer rate, so you should use the fastest mode
the device can operate at. With Setup Defaults loaded in the
CMOS Setup Utility, the system will automatically detect the
fastest mode a device can use and set it for that mode.

UltraDMA is another transfer method that provides even faster
data transfer than PIO modes. To use it you must install a drive
that uses this transfer method. Drives that use PIO Mode transfer
can not use the UltraDMA setting.

The settings for drive modes are in the Integrated Peripherals
section of the CMOS Setup utility . The screen illustration at right
shows the Setup Defaults settings.

P5SJ-A User’s Manual

3: Reconfiguring Your Mainboard – 3.17

CMOS Setup Utility –

Integrated Peripherals
The illustration above shows
the Setup Defaults settings for
this screen. Y ou can install IDE
devices under these settings
and the system will automati­cally detect and set the best
mode for each device.

You can also set the transfer
mode for each device manu­ally, although we recom­mend using the default set­tings unless you have a rea­son not to and you know what
you are doing.

P5SJ-A User’s Manual

3: Reconfiguring Your Mainboard – 3.18

Installing IDE Devices

The mainboard’s Enhanced IDE controller supports four de­vices in two channels, IDE1 and IDE2. These are called the Pri­mary and Secondary IDE channels.

Each channel supports two devices, the first device is called
the Master device and the second the Slave device. You must
configure any IDE device you install to operate as one or the
other. To find out how to configure the device you plan to install
you should refer to the manual that comes with the device. You
may need to set jumpers or switches to configure it.

IDE Cables

The mainboard comes with one IDE ribbon cable to connect
two devices to the mainboard. If you need to install devices on
the second channel you will need to get another IDE cable. These
are a standard and inexpensive item that you can generally find
at any computer supply store. One edge of the cable is colored to
indicate the Pin 1 side. When you connect the cable to the main­board and a device you must orient the cable so that this colored
edge is at the Pin 1 side of the connector you are attaching it to.

The mainboard IDE connectors have an orientation cut-out to
ensure correct orientation, and the supplied cable has an orienta­tion tab on the side of the connector. Some IDE cables do not
have this tab and therefore are not forced to use the correct orien­tation. You should check that any cable you buy has orientation
tabs on the side of the connectors. If you get a cable that does not
have them, make sure the cable is correctly oriented when you
attach it to the board and the device.

P5SJ-A User’s Manual

3: Reconfiguring Your Mainboard – 3.19

IDE cables have three connectors on them, one at each end
and one in-between, closer to one of the ends. When you install
a device on the second channel, attach the lone end to the IDE2
connector on the mainboard. The two connectors that are closer
to each other are for connecting to IDE devices. The connector
on the end is for the Master device and the connector in the middle
is for the Slave device.

IDE Devices & CMOS Setup

When you install a new hard disk drive its parameters will be
automatically detected by the BIOS and entered in the Standard
CMOS Setup section of the CMOS Setup utility if you use the
Setup Defaults, which automatically detect any new hard disk
drive. All other devices do not use drive parameters and will not
show up in the device list on this page.

Adjusting Display Memory

The 5598 model of this mainboard has an onboard display
card that uses a part of the system memory as display memory.
The default display memory is 1MB. You can increase this in
1MB increments up to a total of 4MB.

Use the ChipSet Features Setup section of the CMOS Setup
utility to change the amount of system memory allotted to dis­play memory. The ‘VGA Shared Memory Size’ line sets the dis­play memory. The screen on the next page shows this.

Remember, when you increase the amount of display memory
you are subtracting from the system memory.

P5SJ-A User’s Manual

3: Reconfiguring Your Mainboard – 3.20

CMOS Setup Utility –

ChipSet Features Setup
The VGA Shared Memory Size
line sets the size of the dis­play memory. The display
memory is drawn from the
total system memory. The
options are 1, 2, 3 or 4MB.
This is for the 5598 model that
has onboard VGA only.

P5SJ-A User’s Manual

4: Reference Information – 4.1

In This Section:

Jumper Summary
Connector Summary
CPU Information
Memory Configurations
CMOS Setup Utility

4: P5SJ–A Reference Information

This section is a summary of the P5SJ–A’s specifications and
settings. It includes the following:

• Jumper Configuration Summary

• Connector Summary

• Supported CPUs

• System Memory Configuration Specifications

• CMOS Setup Utility Summary

Using This Section

The information in this section is presented in a summary for­mat to make it easy to find specific information. If you need re­lated explanations, please refer to the topics earlier in the manual.

P5SJ-A User’s Manual

4: Reference Information – 4.2

P5SJ-A Mainboard Layout

ISA Slots 1 2 3

PCI Slots 4 3 2 1

IR Port

JP20

USB Port

VGA Port

JP12-

JP15

Case Features

JP16

JP24

Battery

IDE 2
IDE 1

COM2

SIMM4

SIMM2

SiS

5598

JP23

JP18

Printer

CPU Socket 7

Floppy

KB/Mouse

SIMM3
SIMM1

Socket 7

Fan Power

COM1

JP6

JP22

JP25

Power

Wake Up

Jumper & Connectors

The illustration above shows
the location of the jumpers,
ports and other connectors
on the mainboard.
Jumpers JP23, 24, and 25 are
only on the 5598 model.

The VGA Port connector is for
the external VGA port bracket
(5598 model only.)
The USB connector is for the
external USB 2-port bracket.

P5SJ-A User’s Manual

4: Reference Information – 4.3

Jumper Configuration Summary

This section lists the jumper setting options for this mainboard.
The settings are listed as follows:

• The two pins shorted by a jumper cap on a three-or-more-pin

jumper, e.g. 1-2

or

• For a two-pin jumper, On, if the cap is in place, and Off, if a

cap is not in place.

In the jumper illustrations, the Pin 1 position is shaded and
the jumpers, shown in a “bird’s eye” view, look like this:

A jumper with a cap in position looks like this:

The default settings are noted in the summary tables. Unless
you need to upgrade the CPU, disable the onboard VGA feature
or upgrade the BIOS, you should not need to change them.

C

In practice, for an Off setting
on a two-pin jumper, place
the cap over one pin so that it
doesn’t get lost.

P5SJ-A User’s Manual

4: Reference Information – 4.4

CPU Jumper Settings
Function Jumper Settings

External JP12–JP15 50MHz 12:2-3, 13:2-3, 15:2-3
Speed 55MHz 12:2-3, 13:2-3, 15:1-2

60MHz 12:2-3, 13:1-2, 15:2-3

(D) 66.6MHz 12:1-2, 13:2-3, 15:2-3

75MHz 12:2-3, 13 :1-2, 15:1-2

83.3MHz 12:1-2, 13:2-3, 15:1-2
*The 2-3 setting for JP14 sets the PCI bus clock to 32MHz for all speeds.
The 1-2 setting sets it to one half the external clock speed.

Internal Clock JP18 1.5x BF0:1-2BF1: 1-2
Factor (D) 2.0x BF0:2-3BF1: 1-2

2.5x BF0:2-3BF1: 2-3

3.0x BF0:1-2BF1: 2-3

3.5x BF0:1-2BF1: 1-2

4.0x BF0:2-3BF1: 1-2 BF2: 2-3
I/O Voltage JP6 (D) STD 3.3V 1-2

VRE 3.52V 3-4

Core Voltage JP22 1-2 3-4 5-6 7-8
On= Cap On (D) 2.14V On
Off= Cap Off 2.54V On On

2.84V On

2.94V On On

3.24V On On

3.34V On On On

3.54V On On On On

P5SJ-A User’s Manual

4: Reference Information – 4.5

JP12, 13, 15: External Clock Speed

JP12JP15

50MHz

55MHz

60MHz

66.6MHz

75MHz

83.3MHz

JP18: Internal Clock Factor

BF0

BF1

BF2

1.5x

2.0x

2.5x

3.0x

3.5x

4.0x

JP6: CPU I/O Voltage (Vio)

42

STD 3.3V

31
42

VRE 3.52V

31

P5SJ-A User’s Manual

4: Reference Information – 4.6

JP22: CPU Core Voltage (Vcore)

2.14V

2.54V

2.84V

2

1

JP16: Clear CMOS

Normal Clear

JP23, 24, 25: Onboard VGA

8

2.94V

7

3.24V

3.34V

11

3.54V

JP20: Flash ROM Boot Block

11

Programmable Boot Block

Protect

Enable

1

JP23

1

JP241JP25

Disable

1

JP23

1

JP241JP25

P5SJ-A User’s Manual

4: Reference Information – 4.7

Other Jumper Settings
Function Jumper Settings

Clear CMOS JP16 Normal 1-2 (D)

Clear* 2-3
* With the power turned off, put cap on jumper for a moment and then
remove to clear current CMOS settings

Flash ROM JP20 Protect 2-3 (D)
Boot Block Programmable 1-2
Note: Set this to the Programmable setting to update the BIOS

Onboard VGA JP23,24,25 Enable 23:1-2, 24:2-3, 25:1-2 (D)

Disable 23:2-3,24:1-2, 25:2-3
Note: Non-VGA model does not have these jumpers.

[D] = Default Setting

P5SJ-A User’s Manual

4: Reference Information – 4.8

Onboard Connectors
Name: Function Information

IDE1: 1st IDE channel 40-pin connector connects to 2-device cable;

End device is Primary Master, middle is Slave

IDE2: 2nd IDE channel 40-pin connector connects to 2-device cable;

End device is Secondary Master, middle is Slave

Floppy: Floppy drive 34-pin connector connects to 2-device cable;

End device is Drive A:, middle is Drive B:
COM1: Serial Port 1 Onboard 9-pin serial port , can be set to COM3
COM2: Serial Port 2 Onboard 9-pin serial port, can be set to COM4
CN2: Parallel port Standard 25-pin parallel Printer port
Mouse: PS/2 Mouse Standard PS/2 mouse port
KB: PS/2 Keyboard Standard PS/2 keyboard port
J6: VGA port External VGA port bracket connector (on 5598 only)
USB1: USB port 10-pin connector for dual external USB port bracket
PW1: AT Power Connects to AT (PS/2) power supply leads P8 & P9
PW2: ATX Power Connects to ATX power supply lead
J1: CPU Fan Connects to 2 or 3-pin power lead from CPU fan
CN3: SIR IR port Connects to optional IR port module
J8: Wakeup Connects to external wakeup signal cable
J7: Feature connector Connects to case features:

Pin 1-3: Power On LED; Pin 4-5: ACPI Switch;

Pin 6-8:ACPI LED; Pin 9-10: Reset Switch

Pin 11-12: Keyboard Lock; Pin 13-16: Speaker

Pin 17-18: Hard Disk LED; Pin 19-20: Power Switch

P5SJ-A User’s Manual

4: Reference Information – 4.9

J7: Case Features Connector

1 – 3 4 – 5 6 – 8 9 – 10 11 – 12 13 – 16 17 – 18 19 – 20

Pin 1-3: Power On LED
Pin 4-5: Suspend Switch
Pin 6-8: Suspend LED
Pin 9-10: Reset Switch
Pin 11-12: Keyboard Lock
Pin 13-16: Speaker
Pin 17-18: Hard Disk LED
Pin 19-20: Power Switch

P5SJ-A User’s Manual

4: Reference Information – 4.10

Supported CPUs

This mainboard can use CPUs from Intel, Cyrix, IBM and
AMD. The board’ s switching CPU power design and jumper con­figuration options allow the use of all Pentium class processors
from all three vendors, including those with MMX features. The
correct jumper configuration automatically sets the required
power configuration for the CPU.

Processor speeds from 90 to 200MHz are supported as well as
single and split voltage CPUs.

Intel CPUs Supported:

Pentium P54C, P54CTB, P54CT, P55C

Cyrix & IBM CPUs Supported:

6X86, 6X86L

AMD CPUs Supported:

K5, K6

P5SJ-A User’s Manual

4: Reference Information – 4.11

Interpreting CPU Markings

If you are installing a CPU and you do not have the informa­tion needed to set the CPU jumper configuration you can usually
get it from the makings on the CPU. The following information
is a guide to reading the markings.

AMD K5 CPU Markings

P–Rating: 75, 90, 100, 120, 133, 150, 166

Package Type
A=SPGA (296-pin)

AMD –

100MHz

Internal Clock Speed

Operating Voltage
B = 3.45V ~ 3.60V
C = 3.30V ~ 3.465V
F = 3.135V ~ 3.465V

(Vcore/Vio)
H = 2.76V ~ 3.0V / 3.135V ~ 3.465V
J = 2.57V ~ 2.84V / 3.135V ~ 3.465V
K = 2.38V ~ 2.63V / 3.135V ~ 3.465V

K5 – PR100 A B Q

CPU Model

Case Temperature
Q = 60°C
R = 70°C
W = 55°C
X = 65°C
Y = 75°C
Z = 85°C

P5SJ-A User’s Manual

4: Reference Information – 4.12

Cyrix 6x86 CPU Markings

P–Rating: 90+, 120+, 133+, 150+, 166+, 200+

CPU Model

6x86

6x86L

Core Voltage
Range Midpoint

3.3V

3.52V

2.5V

2.7V

6x86 – P166+ GP
133MHz

3.52V (028)

VCC Specification
Full-spec = 3.15V ~ 3.7V
C-spec (16) = 3.15V ~ 3.45V
C-spec (028) = 3.4V ~ 3.7V

Internal Clock Speed
(Core Frequency)
100, 110, 120, 133, 150

P5SJ-A User’s Manual

4: Reference Information – 4.13

System Memory Specifications

The memory subsystem has four SIMM sockets divided into
two banks, SIM1 & SIM2 and SIM3 & SIM4. Install SIMM mod­ules in pairs using the same type and speed in each bank. This
mainboard supports both Fast Page Mode (FPM) and EDO DRAM
modules. Modules from 2MB to 128MB are supported, either
single or double-sided. Total supported memory capacity is
256MB.

Memory Configurations

You can install any system memory combination as long as
you follow the basic requirement of installing identical modules
in both sockets of a bank, i.e.:

• All modules must be 5 Volt

• Same module memory capacity, e.g. 16MB (MegaBytes)

• Same DRAM memory type e.g. EDO

• Same operating speed, e.g. 60ns (nanoseconds)

Other than this requirement, there is no limitation on the va­riety of possible combinations, so they are not listed here.

Note: It is possible to install more memory than the board
supports, e.g. four 128MB modules would total 512MB, but the
board would ignore 256MB of that. Do not install more than
256MB on this mainboard.

P5SJ-A User’s Manual

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CMOS Setup Utility Summary

This section explains the entries in the CMOS Setup Utility

program. This utility is permanently stored on the BIOS chip on
the mainboard. It creates a record of the mainboard’s and some
system configuration information and stores it in battery-sup­ported memory on the mainboard. This record must be intact
and accurate in order for the mainboard to operate.

After a brief explanation of how to operate the utility there is

a summary of the entries and options for all sections of the util­ity. Under normal conditions, once your system is set up, you
should have little or no need to use this utility.

Using the CMOS Setup Utility

This mainboard uses the Award system BIOS. It is stored in a

Flash ROM memory chip on the mainboard. The BIOS uses a
software program, also stored on the same chip to create a sys­tem configuration record which is saved in a small amount of
special “CMOS” memory on the mainboard.

Accessing The CMOS Setup Utility

When you turn on your computer, a message appears on the

screen indicating you can run the Setup program by pressing the
Del key (it’s on the keypad.) The message appears after the POST
(Power On Self Test).

If you want to run Setup but you don’t respond in time before

the message disappears, you can reset the system by pressing the
Ctrl + Alt + Delete keys at the same time, or by pushing the
system Reset button. The message will then reappear.

After you press the Del or Delete key the program menu screen

will appear, displaying the Setup utility section names and some
command instructions.

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Menu Commands

If you look at the lower portion of the screen illustration you’ll

see a section that lists the control commands for this level of the
program. You execute a command by pressing the key for that
command. The program commands are :

Quit

This command will close the Setup program when you press
the ESC key.

Save & Exit Setup

This will save the current settings and close the Setup pro­gram when you press the F10 key.

Select Item

You can use the arrow keys on your keyboard to move around
the screen and select a menu item. An item is highlighted when
it is selected.

Change Color

Change the program color scheme by pressing Shift + F2.
The section at the bottom of the screen displays a brief expla-

nation of a highlighted menu item’s function.

There are six main sections to the Setup program:

• Standard CMOS Setup
Date, time, disk drive, video display and error handling

• BIOS Features Setup
System customization features and video display settings

• Chipset Features Setup
Chipset settings, memory configuration feature for special-

ized add-on cards and VGA memory configuration

• Power Management Setup
Sets up the “green” power management features

• PNP/PCI Configuration
PCI expansion slot and system resource settings

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• Integrated Peripherals

IDE channels and onboard port settings
The other main menu items interact with these main sections:

• Load BIOS Defaults

Loads minimum settings from the BIOS ROM.

• Load Optimum Settings

Loads optimized settings from the BIOS ROM.

• Password Setting

Sets system password which is configured by the Security
Option item in BIOS Features Setup.

• IDE HDD Auto Detection

Automatically detects the drive parameters of any installed
IDE hard disk drives and enters them automatically in the Stan­dard CMOS Setup.

• Save & Exit Setup

Saves the current settings and exits the program.

• Exit Without Saving

Discards any changes made during the current session and
exits the program.

To enter a section of the Setup program, highlight the menu

item and press the Enter key.

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Standard CMOS Setup

To enter this section, highlight this menu item in the main

menu and press the Enter key. The screen above will appear.

Menu Commands

If you look at the lower portion of the screen illustration you’ll

see a section that lists the control commands for this level of the
program. You execute a command by pressing the key for that
command. The program commands are :

Quit
This command will close the Setup program when you press

the ESC key.
Help
This displays information about the highlighted item when

you press the F10 key.

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Select Item
You can use the arrow keys on your keyboard to move around

the screen and select a menu item. An item is highlighted when
it is selected.

Change Color
You can change the program color scheme by pressing Shift +

F2.
Modify
T o change the setting of a highlighted selection you can press

either the Page Up (PU) and Page Down (PD) keys or the Plus
(+) and Minus (–) keys. Pressing a key once will switch to the
next setting option for the selected item.

If your mainboard is already installed in a working system the
proper entries are already entered on this screen and you shouldn’t
change them except for adjusting the Date and Time entries if
necessary.

Date & Time

The first two lines on the screen are the date and time settings
for the system clock.

Hard Disk Type & Parameters

Use the IDE HDD Auto Detection feature to automatically
enter the drive parameters of IDE hard disk drives in these fields.
If you have only SCSI hard disk drives installed in your system
leave the settings here at None. Only hard disk information needs
to be entered here. Other IDE devices do not use this.

For an IDE hard drive, you should set the entry to “Auto” and
the BIOS will automatically detect all drive information needed.
Y ou can use the IDE HDD Auto Detection utility described later
to supervise the auto-detection process. If you want to do this,
leave the drive set to “None”. You can also enter specifications
manually by using the “User” option.

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Large Hard Disk Modes

The last of the drive parameter entries – Mode – has four op-

tions, Normal, LBA, Large and Auto. The Mode settings are for
IDE hard disks only.

Normal
For IDE hard disks of 528MB or less.
LBA
This stands for Logical Block Addressing, the current standard

access mode for large IDE hard disk drives. It allows the use of
hard disks larger than 528MB by causing the IDE controller to
translate between the logical address it creates and the hard
disk’s actual physical address. The maximum drive size sup­ported is 8.4GB.

Large
For 1GB or smaller drives with more than 1024 cylinders and

no LBA support. This access mode causes the Operating Sys­tem to treat the drive as if it has fewer than 1024 cylinders by
dividing the cylinder total in half and doubling the number of
heads. Drives needing this mode are less common.

Most large IDE hard disk drives currently available use the

LBA mode. Use the AUTO setting to automatically detect the
correct mode for new drives.

Floppy Disk Drives

The two floppy disk drive items set the drive type for drives A

and B, and must be entered manually. The options 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

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Highlight the listing after each drive name and select the ap­propriate entry.

Floppy 3Mode Support

3Mode is a Japanese 3.5-inch floppy disk drive specification.
If this type of drive is installed you should enable this feature.
The default setting is Disabled.

Video Display Types

You set this according to the type of display card in your sys­tem. This should normally be left on EGA/VGA. The options are:

EGA/VGA
Mono (for Hercules or MDA)
CGA 40
CGA 80

Error Handling

The last line – Halt On – sets when the system stops if an
error occurs. The options are:

All Errors (Default)
No Errors
All, But Keyboard
All, But Diskette
All, But Disk/Key

When you are finished in this section, exit to the main menu
screen by pressing the Esc key.

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BIOS Features Setup

T o enter this section of the Setup program, highlight this menu

item in the main menu and press the Enter key. The following
screen will appear.

Menu Commands

If you look at the lower portion of the screen illustration you’ll

see a section that lists the control commands for this level of the
program. You execute a command by pressing the key for that
command. The program commands are :

Quit

This command will close the Setup program when you press
the ESC key.

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Help

This displays information about the highlighted item when

you press the F10 key.
Select Item

You can use the arrow keys on your keyboard to move around

the screen and select a menu item. An item is highlighted when

it is selected.
Modify

T o change the setting of a highlighted selection you can press

either the Page Up (PU) and Page Down (PD) keys or the Plus

(+) and Minus (–) keys. Pressing a key once will switch to the

next setting option for the selected item.
Change Color

Change the program color scheme by pressing Shift + F2.
Old Values

If you make changes during the current session and you don’t

want to keep them you can recall the last set of saved values

for this page by pressing the F5 key.
Load BIOS Defaults

Pressing F6 loads the BIOS Default settings for this page.
Load Setup Defaults

Pressing F7 loads the Setup Default settings for this page.

If your mainboard is already installed in a working system the
proper entries are already entered on this screen and you shouldn’t
change them.

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Virus Warning

This protects the primary hard disk’s boot sector and partition

table from infection. Any attempt to write to them will halt the
system and produce a warning message. If this happens, you can
either allow the system to continue or stop it and boot from a
virus-free bootable floppy disk. Use an anti-virus utility located
on the floppy disk to check the hard disk. The default setting is
Disabled.

CPU Internal Cache

This enables CPU’s Level 1 built-in cache. Leave it enabled to

maintain system performance. The default setting is Enabled.

External Cache

This is the Level 2 external cache of either 256KB or 512KB.

Leave this enabled to maintain system performance. The default
setting is Enabled.

Quick Power On Self Test

This feature speeds up the Power On Self T est (POST) by skip-

ping some parts of the POST. If your system is functioning nor­mally , you can enable this feature to speed the boot process. The
default setting is Enabled.

Boot Sequence

This determines the order in which the computer checks drives

for an operating system. It allows you to configure the system to
boot from a CD-ROM, SCSI drive or other IDE drive in addition
to the drive A: floppy disk drive and the drive C: boot hard disk.
The are numerous options.

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Swap Floppy Drive

This switches the floppy drive assignments so that drive A is
treated as drive B: and drive B: as drive A: under DOS. The de­fault setting is Disabled.

Boot Up NumLock Status

This item allows you to select which mode the numeric key­pad on an IBM-compatible extended keyboard is set to when the
computer boots up. The options are:

On – Numeric keypad mode (Default)
Off – Cursor control mode

Gate A20 Option

This sets the gate A20 control. The two options are:

Fast – Recommended default
Normal

Security Option

This sets when password protection is active. The two op­tions are:

System – Password required at boot up
Setup – Password controls access to Setup utility

You create a password using the Password Setting option in
the main menu. If no password is set, the system ignores this
item.

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PCI/VGA Palette Snoop

If your video display card has an MPEG card attached to the

feature connector, the display may invert to black on white while
booting. If this happens with your system configuration, enable
this feature to correct the problem. The default setting is Dis­abled.

OS Select For DRAM >64MB

If your system has more than 64MB of system memory in-

stalled and you are using the OS/2 operating system, set this to
the OS2 setting. The default setting, Non-OS2, is for all other
operating systems.

Video BIOS Shadow

This copies the video display card BIOS into system DRAM

to increase display speed and is required for system performance.
The default setting is Enabled.

Shadowing Address Ranges

The next six lines, from C8000-CBFFF Shadow to DC000-

DFFFF Shadow are address ranges for shadowing other expan­sion card ROMs. If there are any expansion cards with ROMs
installed in your system, you have to know the address range
they use to shadow them specifically. The default setting for all
of these is Disabled.

When you are done in this section press the Esc key to return

to the main menu.

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Chipset Features Setup

T o enter this section of the Setup program, highlight this menu
item in the main menu and press the Enter key. The following
screen will appear.

Menu Commands

The menu commands for this screen are the same as for the
BIOS Features Setup screen.

Auto Configuration

Everything on this screen except for the Memory Hole and
VGA Shared Memory Size item is set automatically when auto­configuration is active. If you disable it you can set the values
manually, although we recommend against this. Don’t disable
automatic configuration unless you know what you are doing.
The default setting is Enabled.

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Memory Hole At 15M–16M

Some special add-on cards require a 1MB address space be-

tween 15 and 16MB. The documentation for this type of card
should tell you if it needs this. The default setting is Disabled.

VGA Shared Memory Size

This sets the size of the 5598 model’s onboard video display

memory. The video memory is drawn from the total installed
system memory. The options are 1MB, 2MB, 3MB and 4MB.
The default setting is 1MB.

To return to the main menu press the Esc key.

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Power Management Setup

To enter this section of the Setup program, highlight this
menu item in the main menu and press the Enter key. The fol­lowing screen will appear.

Menu Commands

The menu commands for this screen are the same as for the
BIOS Features Setup screen.

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What Power Management Does

Power management lets you set up your computer to save

electricity when it is not actively in use by putting the system
into progressively greater power saving modes. In the power man­agement scheme there are four system states which proceed in
the following sequence:

Normal
Doze
Standby
Suspend

Power Management

This controls the entire power management scheme. There

are four settings:
User Defined

You set the power saving options manually

Disable

Turns off all power management

Max Saving

Maximizes power saving by activating maximum power sav­ing settings after one minute of system inactivity

Min Saving

Produces less power saving by activating moderate power sav­ing settings after one hour of system inactivity

PM Control By APM

When this is set to Yes the Advanced Power Management fea-

ture in Microsoft Windows controls power management opera­tion. The default setting is No.

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Video Off Method

This governs monitor power saving by controlling how power
management blanks the monitor screen. The default setting blanks
the screen and turns off vertical and horizontal scanning and re­quires a monitor with “green” features. If you don’t have this
type of monitor, use the Blank option. DPMS (Display Power
Management System) allows the BIOS to control the video dis­play card if the card has the DPMS feature.

V/H SYNC+Blank (Default)
Blank (Non-green monitor, less saving)
DPMS (Display card must support DPMS)

Video Off Option

This governs in what modes the video display gets turned off.
The options are:

Susp,Stby-> Off (Off in Suspend & Standby)
Susp-> Off (Off in Suspend)
All Modes Off (Off in Doze, Suspend & Standby)
Always On (No video shut off)

Modem Use IRQ

If you have a modem installed in your system you can enter
which IRQ it is using so that APM can control it. The default
setting is NA (Not Applicable).

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Doze Mode

This sets the period of system inactivity after which the sys-

tem goes into Doze mode, the most limited power saving state.
The settings range from 1 minute to 1 hour and can be set manu­ally when power management is in User Define mode. The de­fault setting is Disabled. When the system goes into power sav­ing mode, power management will skip to the next mode in the
sequence if this is disabled.

Standby Mode

This sets the period of system inactivity after which the sys-

tem goes into Standby mode, the intermediate power saving state.
The settings range from 1 minute to 1 hour and can be set manu­ally when power management is in User Define mode. The de­fault setting is Disabled. When the system goes into power sav­ing mode, power management will skip to the next mode in the
sequence if this is disabled.

Suspend Mode

This sets the period of system inactivity after which the sys-

tem goes into Suspend mode, the maximum power saving state.
The settings range from 1 minute to 1 hour and can be set manu­ally when power management is in User Define mode. The de­fault setting is Disabled. When the system goes into power sav­ing mode, power management will skip to the next mode in the
sequence if this is disabled.

HDD Power Down

This shuts down IDE hard disks that support a power saving

mode after a specified time period. The settings range from 1 to
15 minutes and can be set manually when power management is
in User Define mode. HDD Power Down does not affect SCSI
hard disks. The default setting is Disabled.

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The system automatically resumes from any power saving
mode when there is system activity such as keyboard activity or
an IRQ wake-up event like mouse movement or a modem ring.

ACPI SW Settings

The two ACPI lines control how the system Suspend switch
interacts with power management. The first line enables or dis­ables support for Automatic Power Management – the default is
Disabled – and the second line sets whether the Suspend switch
will also function as a “Soft-Off” power button, where pressing it
for more than four seconds will turn off the system. The default
is Soft Off.

Reload Global Timer Events

The system will resume from Doze or Standby mode if there
is any activity on the ports listed here when they are set to ‘En­abled’. The system won’t wake up from such activity if an item is
set to ‘Disabled’. The default settings are:

COM Ports Activity Disabled
LPT Ports Activity Disabled
HDD Ports Activity Disabled
VGA Activity Disabled

Automatic Power Up Control

The items in this section set when the system will automati­cally turn it self on. The options include when there is an incom­ing call to a modem, by the day of the week or by a specific time,
which is set by the Alarm line. If you enable the Alarm line, sev­eral more settings appear below it to enable you to set the alarm.
The default setting for all items is Disabled.

When you are finished you can press the Esc key to return to
the main menu.

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PNP/PCI Configuration

T o enter this section of the Setup program, highlight this menu

item in the main menu and press the Enter key. The following
screen will appear.

Menu Commands

The menu commands for this screen are the same as for the

BIOS Features Setup screen.

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Resources Controlled By

When this line is set to Auto the BIOS will automatically con­figure IRQ and DMA resources. This is the recommended set­ting. If you set this line to Manual, the screen changes as shown
above and allows manual configuration. In general you should
only need to do this if you are installing an ISA card that requires
manual configuration.

Reset Configuration Data

The default setting is ‘Disabled’. If you need to clear the ESCD
data, set this to ‘Enabled’. The data will clear automatically and
the BIOS will reset this line to the ‘Disabled’ setting.

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PCI Actived By

The default setting is ‘Level’. The other setting is ‘Edge’. This

entry affects all the PCI slots. Use the default setting.

PCI IDE IRQ Map To

Most of PCI IDE cards are non-PCI compliant. This line de-

fines the IRQ Routing to make them work properly. The avail­able settings are:

PCI-AUTO (default)
ISA
PCI-SLOT1
PCI-SLOT2
PCI-SLOT3
PCI-SLOT4

If you set this option to ‘ISA’, both the ‘Primary IDE INT#’

and ‘Secondary IDE INT#’ options below it will not appear on
the screen.

Primary/Secondary IDE INT#

These define the primary/secondary IDE INT# of a PCI IDE

card. The setting options are:

A (Primary IDE INT# default )
B (Secondary IDE INT# default )
C
D

When you are finished you can press the Esc key to return to

the main menu.

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Load BIOS Defaults

To invoke this command highlight it in the main menu and
press Enter. A message will appear asking if you want to load the
BIOS defaults. Press the Y key and then the Enter key. The BIOS
default settings will load. Press the N key if you want to cancel.

This loads a set of troubleshooting default values permanently
stored in the BIOS ROM. The settings are not optimal and turn
off all the performance features. Standard CMOS Setup is not
affected by this command.

Load Optimum Settings

To invoke this command highlight it in the main menu and
press Enter. A message will appear asking if you want to load the
Optimum Settings. Press the Y key and then the Enter key. The
Optimum Settings will load. Press the N key if to cancel.

This loads a set of optimized default values permanently stored
in the BIOS ROM. Use this command to load default settings for
normal system operation. Standard CMOS Setup is not affected
by this command.

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Integrated Peripherals

This section sets the IDE transfer mode for all IDE channels. It

also configures the other onboard ports.

Menu Commands

The menu commands for this screen are the same as for the

BIOS Features Setup screen.

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IDE HDD Block Mode

Enables hard disk drive block transfer mode . The setting op­tions are:

Enabled (default)
Disabled

On-Chip Primary/Secondary PCI IDE

Enables or Disables the Primary or Secondary PCI controllers.
Selecting “Disabled”

Enabled (default)
Disabled

IDE Primary/Secondary Master/ Slave PIO

These four lines set the hard disk PIO transfer mode, which
affects the hard disk data transfer rate. The system will auto­detect the PIO mode of a device in any of these positions when
they are set to ‘Auto’, the recommended setting. Alternatively,
you can set the mode manually. Modes 0 to 4 are supported.

releases IRQ14.

Primary/Master Master/Slave Ultra DMA

These four lines enable hard disk UltraDMA transfer mode,
which requires a drive that supports this data transfer method.
The system will auto-detect an UltraDMA device in any of these
four positions when they are set to ‘Auto’, the recommended
setting. The other setting is ‘Disabled’. You can leave these set to
Auto without effect if there are no UltraDMA devices installed.

Onboard FDD Controller

Enables or Disables the onboard Floppy Drive controller.

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Onboard Serial Port 1/2

Sets the I/O address for serial ports 1/2.

3F8/IRQ4 (default of Onboard serial Port 1)
2F8/IRQ3(default of Onboard serial Port 2)
3E8/IRQ4
2E8/IRQ3
Disabled

UART 2 Mode

Sets mode for the second serial port UART. If you select an IR

module type, the second serial port will not be available. The
setting options are:

Standard (default) – (used by COM2 serial port)
ASKIR
HPSIR

Onboard Parallel Port

Sets the I/O address for the onboard parallel port. The setting

options are:

378H/IRQ7 (default)
Disabled
278H/IRQ5
3BCH/IRQ7

If you set this option to ‘Disabled’, the

option below will not appear on the screen.

‘Onboard Parallel Mode’

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Onboard Parallel Mode

Selects the parallel port mode. The setting options are:

SPP (default)
ECP/EPP
EPP/SPP
ECP

If you set this option to ‘SPP’ or ‘EPP/SPP’, the ‘ECP Mode
Use DMA’ option will not appear on the screen. If you set this
option to ‘SPP’ or ‘ECP’, the ‘Parallel Port EPP Type’ option will
not appear on the screen.

ECP Mode Use DMA

Selects the ECP Mode DMA channel. The setting options are:

3 (default)
1

Parallel Port EPP Type

Sets the EPP protocol version. The setting options are:

EPP 1.7 (default)
EPP 1.9

USB Controller

Enables or Disables the onboard USB port controller.

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Password Setting

To invoke this command highlight it in the main menu and

press Enter. A message will appear prompting you to enter a pass­word.

Type in a password. The password is case sensitive, and can

be up to 8 alphanumeric characters. Press Enter when you finish
typing in the password.

If you typed in a password, the message “Confirm Password”

will appear. Confirm the password by typing it again and press­ing Enter. The message box will close.

If you don’t want to set a password after you invoke this com-

mand, or if you want to eliminate an existing password, press
Enter without typing anything else. The message “Password Dis­abled” will appear and the message box will close.

When you set a password, the Security Option line in BIOS

Features Setup controls when the password is required. You can
set the option to require the password when the system boots up
or when calling up the Setup utility. The mainboard ships with
no password.

IDE HDD Auto Detection

When you install an IDE hard drive, you can use this feature

to automatically detect the drive parameters and enter them in
the appropriate Hard Disk section of Standard CMOS Setup.
However, since the Auto settings in Standard CMOS Setup per­form the same function, you do not need to configure IDE hard
disk drives from here. If you want to use this feature, highlight it
in the main menu and press the Enter key.

Save And Exit Setup

When you select this and press Enter the values entered dur-

ing the current session are recorded in CMOS memory.

Exit Without Saving

When you select this and press Enter the Setup Utility closes

without recording any changes made during the current session.