Elitegroup Computer Systems P5TX-AR User manual

P5TX-AR Mainboard
User’s Manual

Version 1.1
Copyright © July 1997 All rights reserved
Thispublicationmaynotbecopied,reproduced,translated,transmittedorreducedtoanyprinted
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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 publica-
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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.

P5TX–AR User’s Manual
Table Of Contents –III
Section 1: P5TX-AR Package & Product Information.............................1 - 1
Manual Features.......................................................................................................... 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 - 8
Section 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 Connectors.................................................................................2 - 9
Firmware & Software .......................................................................................2 - 10
How To Use The CMOS Setup Utility ........................................................................ 2 - 10
Clearing CMOS ......................................................................................................... 2 - 10
Flashing The BIOS ..................................................................................................... 2 - 12
Bus Master Drivers ................................................................................................... 2 - 12
ATi Display Drivers..................................................................................................... 2 - 12

P5TX–AR User’s Manual
Table Of Contents – IV
Section 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 - 6
Memory Configurations .............................................................................................3 - 6
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
Adding Display Memory ................................................................................... 3 - 19
Disabling The Onboard Video Display.............................................................. 3 - 20
Section 4: P5TX–AR Reference Information.........................................4 - 1
Using This Section...............................................................................................4 - 1
Jumper Configuration Summary........................................................................ 4 - 3
Supported CPUs ................................................................................................4 - 8
Interpreting CPU Markings.........................................................................................4 - 9
System Memory Specifications..........................................................................4 - 11
Memory Configurations ............................................................................................4 - 11
CMOS Setup Utility Summary...........................................................................4 - 12
Using the CMOS Setup Utility ................................................................................... 4 - 12
Accessing The CMOS Setup Utility ........................................................................... 4 - 12
Standard CMOS Setup.............................................................................................. 4 - 16
BIOS Features Setup ................................................................................................ 4 - 20
Chipset Features Setup............................................................................................ 4 - 25
Power Management Setup......................................................................................4 - 27
PNP/PCI Configuration ............................................................................................ 4 - 34

P5TX-AR User’s Manual
1: Package & Product Information – 1.1
P5TX-AR Package & Product Information
This manual contains all the information you’ll need to use
the P5TX-AR mainboard. Please take a moment to familiarize
yourself with the design and organization of the manual.
Manual Features
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.
In This Section:
About This Manual
Package Contents
Mainboard Features
Component Information

P5TX-AR User’s Manual
1: Package & Product Information – 1.2
The manual uses some icons to call your attention to impor-
tant information. The icons appear in the sidebar and represent
the following:
• 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
afreecopyoftheReadersoftwarefromtheAbobewebsitewhich
is currently at www.adobe.com as well as other locations.
If you have the online manual, you may want to install Acro-
bat Reader on your system hard disk. You can copy the manual
over as well so that the manual is readily available without hav-
ing to hunt up the Support Disk when you want to view it.
If you are unfamiliar with Acrobat Reader, please take a mo-
ment to view the Reader Online Guide which is available under
the Help menu when you run Reader.
C
D
G
N

P5TX-AR User’s Manual
1: Package & Product Information – 1.3
Package Contents
The P5TX–AR mainboard package contains the following
items. Please inspect the package contents and confirm that ev-
erything is there. If anything is missing or damaged, call your
vendor for instructions before proceeding. The package includes:
• P5TX–AR Mainboard
• Cable Pack:
– 1 Floppy Controller Cable
– 1 IDE Controller Cable
– 1 COM2 & TV Out Port Bracket with attached cable
• Support Disk:
– Bus Master Drivers
– Video Display Drivers
– Audio Drivers
– Infrared Module utility
The mainboard comes with IDE Bus Master drivers for sev-
eral Operating Systems. The drivers are organized in individual
folders by OS. 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.

P5TX-AR User’s Manual
1: Package & Product Information – 1.4
Mainboard Features
This mainboard is a highly integrated ATX design that incor-
porates many features on the board. The mainboard includes the
following features:
• Socket 7 CPU socket supports Pentium and compatible CPUs
up to 233MHz
• Intel 82439TX (MTXC) and 82371AB (PIIX4) chipsets
• Super I/O chip
• NS LM78/LM75 Microprocessor System Hardware Monitor
• 512KB Pipeline Burst SRAM Level 2 cache
• Memory module sockets:
– 3 DIMM sockets support up to 256MB
– SODIMM socket for display memory upgrade
• Onboard Audio
– Crystal CS4237B 3D Sound audio
– Crystal CS9236 hardware wavetable
– Supports ‘Surround-sound’ via audio driver
– External mini-jack Mic, Line-In and Line-Out connectors
• Onboard Video Display
– ATI Rage II+ 3D video chip
– 2MB display memory standard, upgrade to 4MB
– Display drivers for multiple Operating Systems
• External Ports
– VGA display, COM1 serial port, Parallel port
– PS/2 Mouse & Keyboard connectors, dual USB ports
– Game/Joystick port, Mic, Line-In and Line-Out connectors
• Expansion Card Slots
– Three PCI 2.1–compliant PCI slots
– Three 16-bit ISA slots

P5TX-AR User’s Manual
1: Package & Product Information – 1.5
Socket 7
VGA COM1
Parallel USB
Game Keybd
Mouse
COM2
CD-In
TV-Out
VGA Feature/AMC
ATX Power
J19 JP9
ATi Mem. Socket
DIMM3,2,1
JP11
J20
J21
J22
J18
J16 Floppy IDE2
IDE1
CPU Socket 7
Audio Ports: Mic, Line In, Line Out
P5TX-AR Layout
The illustration above shows
the connectors, sockets and
ports and the mainboard.
TheCOM1andVGAportsare
underneath the Parallel port.
The USB ports and the PS/2
Keyboard(lower) andMouse
(upper)portsarestackedone
above the other.
The onboard audio connec-
torsareunderthegameport.
COM2 and TV Out ports are
on a port bracket with cables
that connect to their respec-
tiveconnectorson theboard.

P5TX-AR 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 re-
view this section.
This mainboard uses the ATX ‘form factor’, a design that inte-
grates many features onto the board including some number of
external ports.
Expansion Cards & Slots
The mainboard has six expansion slots for system expansion
or ‘add-on’ cards. Three are ISA slots, the others 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/
ATdesign. Theyare16-bit slotsthatrun ata moderatebusspeed.
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
requiresmanagingthesystemresourceconfiguration.Mostnewer
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
documentationfor acard todetermine ifthis isthe caseand what
needs do be done to properly configure the card.

P5TX-AR User’s Manual
1: Package & Product Information – 1.7
Memory Sockets & Modules
There are three memory module sockets on the mainboard.
They use 168-pin DIMM memory modules. The sockets func-
tionindependently ofeach other.This mainboardhasa veryflex-
ible memory design that allows the use of a variety of memory
options up to a total of 256MB. There is more information about
thisinAddingSystemMemorysectionofSection3:Reconfiguring
Your Mainboard.
Video Display Memory Socket
Thereis 2MBof videodisplay memorymounted onthe main-
board. The display memory can be upgraded to 4MB by install-
ing an SGRAM memory module in the display memory upgrade
socket on the mainboard. See Section 3 for more information.
CPU Socket & CPU
The Socket 7 CPU socket supports the full range of Pentium®-
class CPUs including MMX Pentiums®. Installing a CPU in the
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.

P5TX-AR User’s Manual
1: Package & Product Information – 1.8
Port & Controller Connections
Thereareseveralportsandconnectorsonthemainboard.Some
are external ports and others are internal connectors that connect
to other parts of the computer or internal options.
External Ports
This mainboard has several external ports and connectors in-
cluding the COM2 serial port, a Parallel port, a VGA display con-
nector, a Game port for connecting a Joystick, PS/2-type key-
board and mouse ports and several audio ports. The audio ports
include Mic, Line-In and Line-Out connectors for the onboard
sound card. These external ports are all accessible at the rear of
the computer when the mainboard is installed.
Internal Connectors
There are also several connectors built onto the mainboard,
includingconnectors forfour Enhanced IDEdevices intwo chan-
nels, two floppy disk drives, the COM2 serial port and the TV
Out option. There are also connectors for a CPU cooling fan,
chassis intrusion alert cable and modem ring wake-up cable.
Details about these connectors are in Section 4: Reference In-
formation.

P5TX–AR User’s Manual
2: UsingYourMainboard–2.1
Using Your Mainboard
This section covers the following topics:
• System Controls & Indicators
• Hardware Features
• Firmware & Software
Theygo over thesystem control featuresand status indicators
that connect 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 hard-
ware controls and status indicators that connect from the main-
board to your system case and some information about the parts
of the CMOS Setup Utility that allow you customize some sys-
tem features.
Hardware Controls & Indicators
Therearesomecontrol featuresandstatusindicators thatcon-
nect from the mainboard to your system case, which is some-
times 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
All of these case features connect to the mainboard via con-
nector J22. Not all system cases have all of these features, so
your system may not have all of them. The functions and op-
tions for these are shown in the table on the next page.
In This Section:
System Controls
Hardware Features
Firmware & Software

P5TX–AR User’s Manual
2: UsingYourMainboard – 2.2
Hardware Control & Indicator Connectors
Feature Function
Power Status LED When lighted indicates that system is turned on
Suspend Switch Puts the system into Suspend state under Operating
Systems that support this power management feature
Suspend LED When lighted indicates the system is suspended
Reset Switch Pressing the Reset switch restarts the system
Keyboard Lock Disables keyboard via a lock mounted on front panel
of the case
Speaker Connects to the PC speaker mounted on the system case
HDD Activity LED Flashes when hard disk drive is active
Power Switch Turns the system power on and off. Default sets this
to dual function as power and suspend switch. Press
once for Suspend, hold for >4 seconds for Off. To set as
Power only, change setting in the Power Management
section of the CMOS Setup utility.

P5TX–AR User’s Manual
2: UsingYourMainboard – 2.3
CMOS Setup Utility Controls
Two sections of the CMOS Setup Utility allow you to config-
ure 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 nor-
mally need to use this program. You can, however, customize
some of the operational features to suit how you prefer to use
the system.
Thescreen illustrations on thenext two pages showtheSetup
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 util-
ity including the two noted above.

P5TX–AR User’s Manual
2: UsingYourMainboard – 2.4
CMOS Setup Utility –
BIOS Features Setup
This section of the setup util-
ity allows you to configure
somesystemfeaturesinclud-
ing Virus Warning, Boot Se-
quence and Security Option.
Virus Warning –
When enabled, monitors the
primary hard disk boot sec-
torand warns of anyattempt
to write to it.
Boot Sequence –
Controls the order in which
thesystemchecksdiskdrives
for a boot disk.
Security Option –
Sets the level of password
protection for the system.

P5TX–AR User’s Manual
2: UsingYourMainboard – 2.5
CMOS Setup Utility –
Power Management Setup
This section of the setup util-
ityallowsyoutoconfigurethe
powermanagementfeatures
supportedbytheBIOS.These
can also operate in tandem
withOperatingSystempower
management features.
You can use the Min Saving
orMaxSavingdefaultmodes
or you can configure the
powermanagementfeatures
individuallyintheUserDefine
mode.

P5TX–AR User’s Manual
2: UsingYourMainboard – 2.6
Hardware Features
This section is a brief overview of information about the
mainboard’s hardware features.
Onboard Ports
There are several 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 (on supplied Port Bracket)
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 (lower) & PS/2 Mouse Port (upper)
• USB ports – two ports (stacked)
• Game Port for joystick or other game device
• Audio connectors – Mic, Line-In & Line-Out
• TV-Out jacks (on supplied Port Bracket)
Connectors
Thereare several connectors onthe 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.

P5TX–AR User’s Manual
2: UsingYourMainboard–2.7
CMOS Setup Utility –
Integrated Peripherals
This section of the setup util-
ity configures the IDE and
Floppy controllers and the
settingsfor the external ports
Thissectionenablesandcon-
figures the optional USB and
Infrared features.
The screen illustration shows
the settings when Optimum
Settings are loaded.

P5TX–AR User’s Manual
2: UsingYourMainboard – 2.8
Case Security
The mainboard has a case security feature that will warn if the
system case or ‘chassis’ has been opened since the last time the
system was used. There is a photoelectric cell mounted on the
mainboard that is active when the system is turned off and will
detect the case being opened. The next time you turn the system
on a warning message will appear on screen during the POST
(Power On Self Test) before the Operating System loads.
The J21 connector on the mainboard connects to a chassis
intrusion signal cable.
Cooling Fan Connectors
The is a cooling fan power connector on the mainboard that
supports a CPU cooling fan with power management features. If
you connect this type of fan, and the ‘CPU FAN Off In Suspend’
line in the CMOS Setup utility’s Power Management Setup sec-
tion is set to Enabled, the system will turn the fan off when the
system is in Suspend mode.
Modem Wake-Up
The JP11 connector on the mainboard is for connecting a sig-
nalcablefromamodemthatsupportsamodemringsystemwake
up feature. With such a modem installed and connected to the
mainboard via this connector, the system will wake up from Sus-
pend mode when an incoming call is received by the modem.
The ‘Ring-In Event’ line in the CMOS Setup utility’s Power
Management Setup section must be set to Enabled for this fea-
ture to function.