DFI P5BTX/L, P5BTX, P5BTL User Manual

P5BTX/L

Rev. A+
System Board
User’s Manual

34371013

Copyright

This publication contains the information that is protected by copyright.
No part of it may be reproduced in any form or by any means or used
to make any transformation/adaptation without the prior written
permission from the copyright holders.

This publication is provided for informational purposes only. The
manufacturer makes no representations or warranties with respect to
the contents or use of this manual and specifically disclaims any express
or implied warranties of merchantability or fitness for any particular purpose.
The user will assume the entire risk of the use or the results of the use of
this document. Further, the manufacturer reserves the right to revise this
publication and make changes to its contents at any time, without obligation
to notify any person or entity of such revisions or changes.

All Rights Reserved.

Trademarks

Microsoft® MS-DOS®, WindowsTM and Windows® 95 are registered
trademarks of Microsoft Corporation. Intel and Pentium are registered
trademarks of Intel Corporation. Cyrix, 6x86, 6x86L and 6x86MX are
registered trademarks of Cyrix Corporation. AMD, K5 and K6 are
registered trademarks of Advanced Micro Devices, Inc. IBM is a registered
trademark of International Business Machine Corporation. Award is a
registered trademark of Award Software, Inc. Other trademarks and
registered trademarks of products appearing in this manual are the
properties of their respective holders.

Caution:
Danger of explosion if battery incorrectly replaced.
Replace only with the same or equivalent type recommended by the
manufacturer.
Dispose of used batteries according to the battery manufacturer’s
instructions.

FCC and DOC Statement on Class B

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 when the equipment is operated in a residential
installation. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with
the instruction manual, may cause harmful interference to radio
communications. However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the
following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and the receiver.

• Connect the equipment into 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.

Notice:

1. The changes or modifications not expressly approved by the
party responsible for compliance could void the user's authority
to operate the equipment.

2. Shielded interface cables must be used in order to comply with
the emission limits.

Table of Contents

Chapter 1 - Introduction

1.1 Features and Specifications...................................................................

1.2 Package Checklist.......................................................................................

Chapter 2 - Hardware Installation

2.1 System Board Layout .............................................................................

2.2 Installation Steps..........................................................................................

2.2.1 Installing System Memory........................................................

2.2.2 Installing a Processor..................................................................

2.2.3 Setting the Jumpers on the System Board..................

2.2.4 Installing Expansion Cards......................................................

2.2.5 Connecting the Ribbon Cables and Wires of the

Ports and Connectors..............................................................

2.2.6 Installing the System Board....................................................

Chapter 3 - Award BIOS Setup Utility

3.1 The Basic Input/Output System........................................................

3.1.1 Standard CMOS Setup.......................................................

3.1.2 BIOS Features Setup.............................................................

3.1.3 Chipset Features Setup.......................................................

3.1.4 Power Management Setup................................................

3.1.5 PNP/PCI Configuration.......................................................

3.1.6 Load Fail-Safe Settings..........................................................

3.1.7 Load Optimal Settings..........................................................

3.1.8 Integrated Peripherals...........................................................

3.1.9 Supervisor Password............................................................

3.1.10 User Password.........................................................................

3.1.11 IDE HDD Auto Detection................................................

3.1.12 Save & Exit Setup...................................................................

3.1.13 Exit Without Saving................................................................

7

10

12
13
13
18
22
23

25
33

35
35
39
43
44
47
49
49
50
53
54
54
55
55

Chapter 4 - Supported Softwares

4.1 Desktop Management Interface........................................................

4.2 IDE Drivers...................................................................................................

Appendix A - Identifying Processors

A.1 Intel Processors...........................................................................................

A.2 Cyrix Processors........................................................................................

A.3 AMD Processors........................................................................................

Appendix B - System Error Report

B.1 POST Beep...................................................................................................

B.2 Error Messages............................................................................................

Appendix C - Troubleshooting

C.1 Troubleshooting Checklist.....................................................................

57
60

62
62
63

65
65

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P5BTX/L System Board User’s Manual

CHAPTER

Introduction

6

1.1 Features and Specifications

1.1.1 Features

Chipset

• Intel 82430TX PCIset chipset
Processor

Introduction

1

The system board is equipped with a 321-pin ZIF socket (Intel
Socket 7). This socket is designed for easy removal of an old
processor and easy insertion of an upgrade processor. The system
board is also equipped with a switching voltage regulator that
supports 2.8V to 3.5V core voltage for various processors.

• Intel Pentium processor with MMXTM technology-166/200/
233MHz

• Intel Pentium 90/100/120/133/150/166/200MHz

• Cyrix 6x86L PR150+/PR166+ and 6x86MX-PR166/PR200

• AMD K5 PR90/PR100/PR120/PR133/PR166

• AMD K6-166, K6-200, K6-233 and future K6 processors

System Memory
The system board supports 8MB to 256MB of memory. It is

equipped with two DIMM and four SIMM sockets. The 168-pin
DIMM sockets use x64 EDO (60/70ns), fast page mode (60/70ns),
or SDRAM (10/12/13ns), 3.3V. The 72-pin SIMM sockets use EDO
or fast page mode, 60/70ns, x32 DRAM, 5V.

Level 2 Cache Memory

• 512KB pipeline burst, direct map write-back cache installed on
the system board.



Expansion Slots
The system board is equipped with 4 dedicated PCI slots and 3

dedicated 16-bit ISA slots. All PCI and ISA slots are bus masters.

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P5BTX/L System Board User’s Manual

Desktop Management Interface (DMI)
The system board comes with DMI 2.0 built into the BIOS. The

DMI utility in the BIOS automatically records various information
about your system configuration and stores these information in
the DMI pool, which is a part of the system board's Plug and Play
BIOS. DMI, along with the appropriately networked software, is
designed to make inventory, maintenance and troubleshooting of
computer systems easier.

Onboard I/O

• Two NS16C550A-compatible serial ports

• One SPP/ECP/EPP parallel port

• One floppy drive interface supports up to 2.88MB floppy
drives.

• One PS/2 mouse port

• One PS/2 or AT keyboard port

• One 12-pin standard AT power supply connector

PCI Bus Master IDE Controller

• Two PCI IDE interfaces support up to four IDE devices

• Ultra DMA/33 supported (Synchronous DMA mode - data
transfer rate up to 33MB/sec.)

• PIO Mode 3 and Mode 4 Enhanced IDE (data transfer rate up
to 16.6MB/sec.)

• Bus mastering reduces CPU utilization during disk transfer

• ATAPI CD-ROM supported

• LS-120 and ZIP supported

IrDA Interface
The system board is equipped with an IrDA connector for

wireless connectivity between your computer and peripheral
devices.

USB Ports
The system board is equipped with a header for external USB

ports. USB allows data exchange between your computer and a
wide range of simultaneously accessible external Plug and Play
peripherals.

8

Introduction

BIOS

• Award BIOS, Windows 95 Plug and Play compatible

• Flash EPROM for easy BIOS upgrades
Power Supply Connector
The system board is equipped with an AT power supply connector

for connecting an AT power supply.

1.1.2 Technology

SDRAM
Synchronous Dynamic Random Access Memory (SDRAM) is a

DRAM technology that uses the clock on the chip to synchronize
with the CPU clock so that the timing of the memory chips and
the timing of the CPU are synchronized. This saves time during
transmission of data, subsequently increasing system performance.

Ultra DMA/33 Bus Master IDE
The system board supports Synchronous Ultra DMA mode that

provides data transfer rate at 33MB/sec, which is double the data
transfer rate of Enhanced IDE or ATA-2. This enables the CPU to
operate more efficiently when handling simultaneous events.

1

1.1.3 Intelligence

RTC Timer to Power On the System
The RTC installed on the system board allows your system to

automatically wake up on the set day and time. Set the day and
time you would like your system to power on in the “Resume By
Alarm” field (Power Management Setup) of the Award BIOS.

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P5BTX/L System Board User’s Manual

Virus Protection
Most viruses today destroy data stored in hard drives. The system

board is designed to protect the boot sector and partition table
of your hard disk drive. If an attempt is made to write to the
boot sector or partition table of the hard disk drive, the BIOS will
halt the system and an error message will appear. Refer to the
“Virus Warning” field in the BIOS Features Setup section of this
manual (Chapter 3).

1.2 Package Checklist

The system board package contains the following items:

þ The system board
þ A user’s manual
þ Serial, mouse and printer port cables

Option 1:

- One card-edge bracket with a 9-pin and 25-pin serial port

cables

- One card-edge bracket with a 25-pin printer port cable

and a PS/2 mouse port cable

Option 2:

- One card-edge bracket with two 9-pin serial port cables

and a PS/2 mouse port cable

- One 25-pin printer port cable for chassis mounting

þ One 40-pin IDE hard disk cable
þ One 34-pin floppy disk drive cable
þ One utility diskette
þ Five spare jumpers
¨ One card-edge bracket with two USB ports (optional)

If any of these items are missing or damaged, please contact your
dealer or sales representative for assistance.

10

CHAPTER

Hardware Installation

2

P5BTX/L System Board User’s Manual

2.1 System Board Layout

12

Hardware Installation

2.2 Installation Steps

Warning:

Electrostatic discharge (ESD) can damage your processor, disk
drives, add-in boards, and other components. Perform the
upgrade instruction procedures described at an ESD
workstation only. If such a station is not available, you can
provide some ESD protection by wearing an antistatic wrist
strap and attaching it to a metal part of the system chassis. If
a wrist strap is unavailable, establish and maintain contact with
the system chassis throughout any procedures requiring ESD
protection.

The following outlines the basic installation steps prior to installing
the system board into the chassis.

2.2.1 Install the System Memory

2.2.2 Install the Processor

2.2.3 Set the Jumpers on the System Board

2.2.4 Install the Expansion Cards

2

2.2.5 Connect the Ribbon Cables and Wires of the Ports and
Connectors

2.2.6 Install the System Board

2.2.1 Installing System Memory

The system board supports two kinds of memory modules: DIMM
and SIMM. DIMM, which sometimes uses SDRAM, performs better
than SIMM, which uses DRAM. When you are purchasing DIMMs,
please specify you want the Intel compatible type. (There are DIMMs
made for other types of computers that are not compatible.)

Note:

DIM and SIM modules cannot exist on the system board at
the same time. Use either SIMM or DIMM only.

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P5BTX/L System Board User’s Manual

2.2.1.1 DIMM

The two 168-pin DIMM
(Dual In-line Memory
Module) sockets use x64
EDO, FPM and SDRAM.
The system board can
support 8MB to 256MB
memory. The table below
summarizes the DIMM
sockets and modules
needed for the corres­ponding memory sizes.

Memory Size

8MB
8MB
16MB
16MB
16MB
24MB
24MB
32MB
32MB
32MB
40MB
40MB
48MB
48MB
64MB
128MB
256MB

DIMM 1
8MB
none
16MB
none
8MB
8MB
16MB
32MB
none
16MB
8MB
32MB
16MB
32MB
32MB
64MB
128MB

DIMM 2
none
8MB
none
16MB
8MB
16MB
8MB
none
32MB
16MB
32MB
8MB
32MB
16MB
32MB
64MB
128MB

14

Hardware Installation

Installing the DIM Module

A DIM module simply snaps into a socket on the system board. Pin
1 of the DIM module must correspond with Pin 1 of the socket.

Notch

2

Tab

Pin 1

1. Pull the “tabs” which are at the ends of the socket to the side.

2. Position the DIMM above the socket with the “notches” in the

module aligned with the “keys” on the socket.

3. Seat the module vertically into the socket. Make sure it is

completely seated. The tabs will hold the DIMM in place.

Key

2.2.1.2 SIMM

The SIMM sockets are
divided into two banks on
the system board, Bank 0
and Bank 1. Each bank
consists of 2 SIMM sockets.

The system board supports
8MB to 256MB of memory
using 1MBx32, 2MBx32,
4MBx32, 8MBx32 or
16MBx32 72-pin SIMMs
(Single In-line Memory
Module). You will need 2 or 4 pieces of SIM modules, depending
on the amount of memory you intend to install. Make sure you
insert the same type of SIMMs in one bank. You can install SIMMs
in either banks but you must populate one bank first before going
to the next bank.

Tab

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P5BTX/L System Board User’s Manual

The following table summarizes the bank locations and modules
needed for the corresponding memory sizes.

Memory Size

8MB

8MB
16MB
16MB
16MB
24MB
24MB
32MB
32MB
32MB
40MB
40MB
48MB
48MB
64MB
64MB
64MB
72MB
72MB
80MB
80MB
96MB
96MB

128MB
128MB
128MB

SIMM1

4MB

—

8MB

—
4MB
4MB
8MB

16MB

—
8MB
4MB

16MB

8MB

16MB
32MB

—

16MB

4MB

32MB

8MB

32MB
16MB
32MB
64MB

—

32MB

Bank 0

SIMM2

4MB

—

8MB

—
4MB
4MB
8MB

16MB

—
8MB
4MB

16MB

8MB

16MB
32MB

—

16MB

4MB

32MB

8MB

32MB
16MB
32MB
64MB

—

32MB

SIMM3

—

4MB

—
8MB
4MB
8MB
4MB

—

16MB

8MB

16MB

4MB

16MB

8MB

—

32MB
16MB
32MB

4MB

32MB

8MB

32MB
16MB

—

64MB
32MB

Bank 1

SIMM4

—

4MB

—
8MB
4MB
8MB
4MB

—

16MB

8MB

16MB

4MB

16MB

8MB

—

32MB
16MB
32MB

4MB

32MB

8MB

32MB
16MB

—

64MB
32MB

16

Hardware Installation

2

Memory Size

136MB
136MB
144MB
144MB
160MB
160MB
192MB
192MB
256MB

SIMM1

4MB

64MB

8MB
64MB
16MB
64MB
32MB
64MB
64MB

Bank 0

SIMM2

4MB

64MB

8MB
64MB
16MB
64MB
32MB
64MB
64MB

SIMM3

64MB

4MB

64MB

8MB
64MB
16MB
64MB
32MB
64MB

Bank 1

SIMM4

64MB

4MB

64MB

8MB
64MB
16MB
64MB
32MB
64MB

Installing a SIM Module

A SIM module simply snaps into a socket on the system board. Pin
1 of the SIM module must correspond with Pin 1 of the socket.

notch

key

1. Position the SIMM above the socket with the “notch” in the
module aligned with the “key” on the socket.

2. Seat the module at a 45° angle into the bank. Make sure it is
completely seated. Tilt the module upright until it locks in place in
the socket.

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P5BTX/L System Board User’s Manual

2.2.2 Installing a Processor

The system board is equipped with a 321-pin Zero Insertion Force
(ZIF) socket The ZIF socket is designed for easy removal of an old
processor and easy insertion of an upgrade processor. If you need
to apply excessive force to insert the processor, you are not installing
the processor correctly.

1. To raise the handle of the ZIF socket, push it down, slightly pull it
out to the side, then raise it as far as it will go. It may be
necessary to initially apply a small amount of sideways force to
free the handle from its retaining “tab”. Once clear of the “tab”,
the handle will open relatively easily. The top plate will slide back.

2. Insert the processor until the pins are in their corresponding
holes. Make sure pin 1 of the processor is aligned with pin 1 of
the socket. To prevent improper processor installation, the ZIF
socket has a Plug/Keying mechanism. Several holes in the socket
are plugged so that the processor will go in only one way.

3. Push the handle down until the handle locks into place. The top
plate will slide forward.

18

Warning:

The processor must be kept cool by using a fan with heatsink.
Otherwise, the processor will overheat and damage the
processor and the system board.

Tab Handle

Pin 1

Hardware Installation

JP1

JP2

JP3

JP8

2.2.2.1 Jumper Settings of the Processors

A processor’s internal clock speed is the actual internal operating
clock of the processor. Its frequency ratio differs from one processor
to another. An Intel processor will multiply the external bus clock by
the frequency ratio to become the internal clock speed. Internal clock
speed is the commonly known speed of Intel processors in the
market and is the actual operating clock of the processor (external
bus clock x frequency ratio = internal clock speed). Cyrix and
AMD processors use the PR-rating system which is the overall
processor performance rating.

The voltage of the processors are divided into Single voltage and
Dual voltage processors. Single voltage processors include Intel
Pentium, Cyrix 6x86 and AMD K5 processors. Dual voltage
processors include Intel Pentium processors with MMX technology,
Cyrix 6x86L and 6x86MX, and AMD K6 processors. Make sure
all jumpers are set correctly before applying power or you may
damage the processor or system board. Use a needle-nosed plier to
move the jumpers if necessary.

The table below shows the External System Bus Clock of the
processors supported by the system board and their corresponding
PCI Clock and ISA Bus Clock.

2

Ext. System Bus Clock

60MHz
66MHz

JP6
JP7

PCI CLK

30MHz
33MHz

ISA Bus CLK

7.5MHz

8.25MHz

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P5BTX/L System Board User’s Manual

Locations of Jumpers JP1-JP3 and JP6-JP8

Jumper Settings for Intel Processors

Processors-Ext. Bus Clk-Ratio

90MHz - 60MHz - 1.5x

100MHz - 66MHz - 1.5x

120MHz - 60MHz - 2x

133MHz - 66MHz - 2x

150MHz - 60MHz - 2.5x

166MHz - 66MHz - 2.5x

200MHz - 66MHz - 3x

MMX166MHz* - 66MHz - 2.5x

MMX200MHz - 66MHz - 3x

MMX233MHz - 66MHz - 3.5x

1-2 On
2-3 Off

1-2 Off
2-3 On

1-2 On
2-3 Off

1-2 Off
2-3 On

1-2 On
2-3 Off

1-2 Off
2-3 On

1-2 Off
2-3 On

1-2 Off
2-3 On

1-2 Off
2-3 On

1-2 Off
2-3 On

JP1

JP2

1-2 Off
2-3 On

1-2 On
2-3 Off

1-2 Off
2-3 On

1-2 On
2-3 Off

1-2 Off
2-3 On

1-2 On
2-3 Off

1-2 On
2-3 Off

1-2 On
2-3 Off

1-2 On
2-3 Off

1-2 On
2-3 Off

Jumper Settings for Cyrix Processors

Processors-Ext. Bus Clk-Ratio

6x86L PR150+ - 60MHz - 2x

6x86L PR166+ - 66MHz - 2x

6x86MX PR166 - 60MHz -

2.5x
6x86MX PR200 - 66MHz -

2.5x

1-2 On
2-3 Off

1-2 Off
2-3 On

1-2 On
2-3 Off

1-2 Off
2-3 On

JP1

JP2

1-2 Off
2-3 On

1-2 On
2-3 Off

1-2 Off
2-3 On

1-2 On
2-3 Off

JP3

1-2 Off
2-3 On

1-2 Off
2-3 On

1-2 Off
2-3 On

1-2 Off
2-3 On

1-2 Off
2-3 On

1-2 Off
2-3 On

1-2 Off
2-3 On

1-2 Off
2-3 On

1-2 Off
2-3 On

1-2 Off
2-3 On

JP3

1-2 Off
2-3 On

1-2 Off
2-3 On

1-2 Off
2-3 On

1-2 Off
2-3 On

JP6

1-2 Off, 3-4 Off,
5-6 On, 7-8 On

1-2 Off, 3-4 Off,
5-6 On, 7-8 On

1-2 Off, 3-4 Off,
5-6 On, 7-8 On

1-2 Off, 3-4 Off,
5-6 On, 7-8 On

1-2 Off, 3-4 Off,
5-6 On, 7-8 On

1-2 Off, 3-4 Off,
5-6 On, 7-8 On

1-2 Off, 3-4 Off,
5-6 On, 7-8 On

1-2 On, 3-4 On,
5-6 Off, 7-8 Off

1-2 On, 3-4 On,
5-6 Off, 7-8 Off

1-2 On, 3-4 On,
5-6 Off, 7-8 Off

JP6

1-2 On, 3-4 On,
5-6 Off, 7-8 Off

1-2 On, 3-4 On,
5-6 Off, 7-8 Off

1-2 On, 3-4 On,
5-6 Off, 7-8 Off

1-2 On, 3-4 On,
5-6 Off, 7-8 Off

JP8

1-2 Off, 3-4 Off,

5-6 Off

1-2 Off, 3-4 Off,

5-6 Off

1-2 On, 3-4 Off,

5-6 Off

1-2 On, 3-4 Off,

5-6 Off

1-2 On, 3-4 On,

5-6 Off

1-2 On, 3-4 On,

5-6 Off

1-2 Off, 3-4 On,

5-6 Off

1-2 On, 3-4 On,

5-6 Off

1-2 Off, 3-4 On,

5-6 Off

1-2 Off, 3-4 Off,

5-6 Off

JP8

1-2 On, 3-4 Off,

5-6 Off

1-2 On, 3-4 Off,

5-6 Off

1-2 On, 3-4 On,

5-6 Off

1-2 On, 3-4 On,

5-6 Off

20

Jumper Settings for AMD Processors

Hardware Installation

2

Processors-Ext. Bus Clk-Ratio

K5 PR90 - 60MHz - 1.5x

K5 PR100 - 66MHz - 1.5x

K5 PR120 - 60MHz - 1.5x

K5 PR133 - 66MHz - 1.5x

K5 PR166 - 66MHz - 1.75x

K6-166 - 66MHz - 2.5x

K6-200 - 66MHz - 3x

K6-233 - 66MHz - 3.5x

K6-266 - 66MHz - 4x

JP1

1-2 On
2-3 Off

1-2 Off
2-3 On

1-2 On
2-3 Off

1-2 Off
2-3 On

1-2 Off
2-3 On

1-2 Off
2-3 On

1-2 Off
2-3 On

1-2 Off
2-3 On

1-2 Off
2-3 On

1-2 Off
2-3 On

1-2 On
2-3 Off

1-2 Off
2-3 On

1-2 On
2-3 Off

1-2 On
2-3 Off

1-2 On
2-3 Off

1-2 On
2-3 Off

1-2 On
2-3 Off

1-2 On
2-3 Off

Jumper Settings for Core Voltage

Core Voltage

* Default

2.8V*

2.9V

3.2V

3.3V

3.5V

Pins 1-2

Off
On
Off
On
On

JP7

Pins 3-4 Pins 5-6

Off
Off
Off
Off
On

JP2

Off
Off
On
On
On

JP3

1-2 Off
2-3 On

1-2 Off
2-3 On

1-2 Off
2-3 On

1-2 Off
2-3 On

1-2 Off
2-3 On

1-2 Off
2-3 On

1-2 Off
2-3 On

1-2 Off
2-3 On

1-2 Off
2-3 On

Pins 7-8

1-2 Off, 3-4 Off,
5-6 On, 7-8 On

1-2 Off, 3-4 Off,
5-6 On, 7-8 On

1-2 Off, 3-4 Off,
5-6 On, 7-8 On

1-2 Off, 3-4 Off,
5-6 On, 7-8 On

1-2 Off, 3-4 Off,
5-6 On, 7-8 On

1-2 On, 3-4 On,
5-6 Off, 7-8 Off

1-2 On, 3-4 On,
5-6 Off, 7-8 Off

1-2 On, 3-4 On,
5-6 Off, 7-8 Off

1-2 On, 3-4 On,
5-6 Off, 7-8 Off

On
On
On
On
On

JP6

JP8

1-2 Off, 3-4 Off,

5-6 Off

1-2 Off, 3-4 Off,

5-6 Off

1-2 Off, 3-4 Off,

5-6 Off

1-2 Off, 3-4 Off,

5-6 Off

1-2 On, 3-4 On,

5-6 Off

1-2 On, 3-4 On,

5-6 Off

1-2 Off, 3-4 On,

5-6 Off

1-2 Off, 3-4 Off,

5-6 Off

1-2 On, 3-4 Off,

5-6 On

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P5BTX/L System Board User’s Manual

2.2.3 Setting the Jumpers on the System Board

2.2.3.1 Jumper Settings for CMOS Clear

Jumper JP5
CMOS Clear

If, for some reason, the CMOS becomes corrupted, the system
can be reconfigured with the default values stored in the ROM
BIOS. To load the default values, power off your system and set
JP5 pins 2 and 3 to On. Wait for a few seconds and set JP5 back
to its default setting, pins 1 and 2 On. You may now power on
your system.

1

2

3

1-2 On: Normal

(default)

1

2

3

2-3 On:

CMOS Clear

22

Hardware Installation

2.2.4 Installing Expansion Cards

1. Switch off your computer’s power.

2. Remove your computer’s cover.

3. Locate for a free expansion slot on the system board. Remove
the screw and slot cover. Save the slot cover for future use. You
will be using the screw in step 6.

4. Unpack the expansion card.

5. Refer to the expansion card’s user’s manual for any hardware
settings such as jumpers.

6. Position the expansion card above the free slot. When the card’s
edge-connector is aligned with the slot, press firmly on the top of
the board to seat it. Secure it with the screw you removed in
step 3.

7. Replace the computer’s cover and switch on the power.

2.2.4.1 Assigning an IRQ for an Expansion Card

2

If your expansion card need an IRQ, make sure to assign an IRQ
that has not been used yet. Refer to the expansion card manual to
determine whether an IRQ is needed.

The system has a total of 16 IRQs but most of them have been
used by different components on the system leaving only 6 free
IRQs available for expansion cards.

There are 2 types of ISA cards: Legacy (configured manually using
jumpers) and PnP (IRQs are assigned automatically). When both
types of cards exist, assign an IRQ for the Legacy cards first. The
PnP card will then automatically be assigned an IRQ that has not
been used by the Legacy cards.

After all ISA cards have been assigned an IRQ, the PCI cards will
then be automatically assigned an IRQ.

Refer to the “Resources Controlled By” field in the PNP/PCI
Configuration setup of the Award BIOS for more information.

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P5BTX/L System Board User’s Manual

To view the used and free IRQs, run Microsoft’s Diagnostic,
MSD.EXE. MSD.EXE is in the Windows directory. If you are using
Windows 95, double-click “My Computer” in the Windows 95
desktop. In “My Computer”, select “Control Panel”. In “Control
Panel”, select “System”. In “System”, select “Device Manager”. In
“Device Manager”, select a device to view the interrupt and IRQ
used.

2.2.4.2 Assigning a DMA Channel for an Expansion Card

The same method (described above) is applied when assigning a
DMA channel to an expansion card. Refer to the “Resources
Controlled By” field in the PNP/PCI Configuration setup of the
Award BIOS for more information.

2.2.4.3 Expansion Slots

The system board is
equipped with 4
dedicated PCI slots and 3
dedicated 16-bit ISA slots.
All PCI and ISA slots are
bus masters.

24

Hardware Installation

2.2.5 Connecting the Ribbon Cables and Wires of
the Ports and Connectors

2.2.5.1 Serial Ports

The built-in serial ports are RS-232C asynchronous communication
ports with 16C550A-compatible UARTs that can be used with
modems, serial printers, remote display terminals, and other serial
devices. You can set the serial ports’ I/O address in the Integrated
Peripherals setup of the Award BIOS.

The serial ports use the following system I/O addresses:

2

Port Configuration

Serial Port 1
Serial Port 2

* Default

COM1

3F8h*
3F8h

COM2

2F8h
2F8h*

COM3

Connecting the Serial Ports

Two serial port cables mounted
on a card-edge bracket are
provided with the system board.
Connect one serial port cable
to connector J7 for COM 1
primary serial port and the
other serial port cable to
connector J8 for the COM 2
secondary serial port. Make sure
the colored stripes on the
ribbon cables are aligned with
pins 1 of connectors J7 and J8.
Mount the card-edge bracket to the system chassis.

3E8h
3E8h

COM4

2E8h
2E8h

25

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P5BTX/L System Board User’s Manual

2.2.5.2 PS/2 Mouse Port

The PS/2 mouse port is a 6-pin connector on the system board.
Attach the 6-pin mouse port cable, which is mounted on a card­edge bracket, to connector J1. Make sure the red wire on the PS/2
mouse connector is aligned with pin 1 of connector J1. Mount the
card-edge bracket to the system chassis.

Pin

1

2
3
4
5

6

Function
Mouse Data
Reserved
Ground
+5V
Mouse Clock
Reserved

2.2.5.3 Parallel Port

The system board has a standard printer port for interfacing your
PC to a parallel printer. It supports SPP, ECP and EPP modes. You
can set the port’s mode in the Integrated Peripherals setup of the
Award BIOS.

Setting

SPP
(Standard Parallel Port)

ECP
(Extended Capabilities Port)

EPP
(Enhanced Parallel Port)

Allows normal speed operation but
in one direction only.

Allows parallel port to operate in
bidirectional mode and at a speed
higher than the maximum data trans­fer rate.

Allows bidirectional parallel port op­eration at maximum speed.

Function

The parallel port on your system board can be set to any of the
following system I/O addresses: 3BC-3BE Hex, 378-37A Hex
(default) and 278-27A Hex.

26

Hardware Installation

Connecting the Parallel Printer Port

Attach the DB-25 printer port
cable to connector J9 on the
system board. Make sure the
colored stripe on the ribbon
cable aligns with pin 1 of J9.
Use a small nutdriver to mount
the cable into a DB-25 cutout
in the system chassis. If your
printer port cable is attached to
a card-edge bracket, connect
the cable to connector J9 on
the system board and mount
the card-edge bracket to the system chassis.

2.2.5.4 Floppy Disk Drive Controller

The system board is equipped with a shrouded floppy disk header
that supports two standard floppy disk drives. To prevent improper
floppy cable installation, the shrouded floppy disk header has a
keying mechanism. The 34-pin connector on the floppy cable can be
placed into the header only if pin 1 of the connector is aligned with
pin 1 of the header.

2

Connecting the Floppy Disk Cable

1. Install the 34-pin header
connector into the shrouded
floppy disk header (J4) on
the system board. The
colored edge of the ribbon
should be aligned with pin 1
of connector J4.

2. Install the other 34-pin
header connector(s) into the
disk drive(s). Align the
colored edge of the daisy
chained ribbon cable with pin 1 of the drive edge
connector(s). The end-most connector should be attached to
the drive you want to designate as Drive A.

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P5BTX/L System Board User’s Manual

2.2.5.5 IDE Hard Disk Interface

The system board is equipped with two shrouded PCI IDE headers
that will interface four Enhanced IDE (Integrated Drive Electronics)
hard disk drives. To prevent improper IDE cable installation, each
shrouded PCI IDE header has a keying mechanism. The 40-pin
connector on the IDE cable can be placed into the header only if pin
1 of the connector is aligned with pin 1 of the header.

Note:

An IDE cable with a standard 40-pin connector (without the
keying mechanism) can be installed in the shrouded IDE
header. Be extremely careful to match the colored edge of the
ribbon with pin 1 of the header.

Connecting the Hard Disk Cable

1. If you are connecting two
hard drives, install the 40-pin
connector of the IDE cable
into the primary shrouded
IDE header (connector J6).
If you are adding a third or
fourth IDE device, install the
40-pin connector of the
other IDE cable into the
secondary shrouded IDE
header (connector J5).

2. Install the other 40-pin header connector(s) into the device
with the colored edge of the ribbon cable aligned with pin 1
of the drive edge connector(s).

Note:

Refer to your disk drive user’s manual for information about
selecting proper drive switch settings.

28

Hardware Installation

Adding a Second IDE Hard Drive

When using two IDE drives, one must be set as the master and the
other as the slave. Follow the instructions provided by the drive
manufacturer for setting the jumpers and/or switches on the drives.

We recommend that you use Enhanced IDE, ATA-2, ATA-3 or
Ultra-ATA hard drives be from the same manufacturer. In a few
cases, drives from two different manufacturers will not function
properly when used together. The problem lies in the hard drives,
not the system board.

Important:

If you encountered problems while using an ATAPI CD-ROM
drive that is set in Master mode, please set the CD-ROM drive
to Slave mode. Some ATAPI CD-ROMs may not be recognized
and cannot be used if incorrectly set in Master mode.

Preparing an IDE Drive for Use

IDE disk drives are already low-level formatted, with any bad-track
errors entered, when shipped by the drive manufacturer. Do not
attempt to do a low-level format or you may cause serious damage
to the drive.

2

To use an IDE drive, you need to enter the drive type (this
information is provided by the drive manufacturer) into the system’s
CMOS setup table. Then run FDISK and FORMAT provided with
your operating system. You may also use the “IDE HDD Auto
Detection” function which will allow the BIOS to auto detect your
hard drive type. Refer to the Chapter 3 - IDE HDD Auto Detection
section for details.

Warning:

Do not run FDISK and FORMAT programs on a drive that has
already been formatted or you will lose all programs and data
stored on the drive.

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P5BTX/L System Board User’s Manual

2.2.5.6 Universal Serial Bus Ports

The system board is equipped with a header, at location J11 on
the system board, for external USB ports. USB allows data
exchange between your computer and a wide range of
simultaneously accessible external Plug and Play peripherals.

You must have the proper drivers installed in your operating
system to use these ports. Refer to your operating system’s
manual or documentation.

Pin

USB 1

1

+5V

2

-Data

3

+Data

4

Ground

5

Ground

USB 2

+5V

-Data
+Data
Ground
Key

Connecting the USB Ports

As an option, one card-edge bracket mounted with two USB port
cables may be provided with the system board. The ends of the
cables are attached to a connector. Connect the USB cable
connector to J11 on the system board. The USB port cables can be
inserted only if pin 1 of the cable (red wire) is aligned with pin 1 of
J11. Pin 5 of J11’s USB 2 has been removed and the hole in the
USB cable connector, which corresponds to pin 5, has been plugged
to prevent incorrectly inserting the connector. Mount the card-edge
bracket to the system chassis.

30

Hardware Installation

USB port

USB port

USB cable connector

USB port cables (optional)

2.2.5.7 IrDA Connector

The system board is equipped with an IrDA connector for wire­less connectivity between your computer and peripheral devices.
Connect your IrDA cable to connector J10 on the system board.
Make sure “UART2 Mode Select” in the Integrated Peripherals
setup of the Award BIOS is Enabled.

You must have the proper drivers installed in your operating
system to use this connector. Refer to your operating system’s
manual or documentation.

2

Pin

1

2
3
4
5

Function

IRTX
GND
IRRX
IRR3
VCC

31

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P5BTX/L System Board User’s Manual

2.2.5.8 J13 (LEDs and Switches)

HDLED
(Primary/Secondary IDE LED)

GLED
(Green LED)

EXTSMI#
(Green switch)

HW-RST
(Reset switch)

SPEAKER
(Speaker connector)

KEYLOCK
(AT power LED/
Keylock connector)

Pin 1
Pin 2

Pin 1
Pin 2

Pin 1
Pin 2

Pin 1
Pin 2

Pin 1
Pin 2
Pin 3
Pin 4

Pin 1
Pin 2
Pin 3
Pin 4
Pin 5

Use pins 1 and 3 for
the Power LED.

+5V
Signal

+5V
Signal

Signal
Ground

Signal
Ground

Signal
N.C.
Ground
+5V

+5V
N.C.
Ground
Keylock Signal
Ground

32

Hardware Installation

132

2.2.5.9 CPU Fan Connector

The processor must be kept cool by using a fan with heatsink.
Position the fan/heatsink on the processor such that the air from the
side of the fan/heatsink will flow across the heat regulators on the
system board. Connect the fan to the 3-pin fan connector at
location J12 of the system board.

2

Pin

1
2

3

Function

GND
+12V
NC

2.2.6 Installing the System Board

1. After you have finished installing or upgrading the system board,
install the system board into the chassis.

2. Install all expansion cards, cables and connectors.

3. Replace the system unit cover. Reconnect all power cords and
cables.

4. You may now turn on the power of your system unit. After you
power up your system, the BIOS message appears on your
screen and the memory count begins. After the memory test, the
following message will appear on the screen: Press DEL to enter
setup. If the message disappears before you respond, restart
your system or press the “Reset” button. You may also restart
the system by pressing the <Ctrl> <Alt> and <Del> keys
simultaneously.

5. Refer to Chapter 3 for descriptions on the BIOS setup.

33

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P5BTX/L System Board User’s Manual

CHAPTER

Award BIOS Setup Utility

34

Award BIOS Setup Utility

3.1 The Basic Input/Output System

The Basic Input/Output System (BIOS) is a program that takes care
of the basic level of communication between the processor and
peripherals. In addition, the BIOS also contain codes for various
advanced features found in this system board. This chapter explains
the Setup Utility for the Award BIOS.

After you power up your system, the BIOS message appears on your
screen and the memory count begins. After the memory test, the
following message will appear on the screen:

Press DEL to enter setup

If the message disappears before you respond, restart your system or
press the “Reset” button. You may also restart the system by pressing
the <Ctrl> <Alt> and <Del> keys simultaneously.

When you press <Del>, the main program screen will appear.

ROM PCI/ISA BIOS

CMOS SETUP UTILITY

AWARD SOFTWARE, INC.

3

STANDARD CMOS SETUP
BIOS FEATURES SETUP
CHIPSET FEATURES SETUP
POWER MANAGEMENT SETUP
PNP/PCI CONFIGURATION
LOAD FAIL-SAFE SETTINGS
LOAD OPTIMAL SETTINGS

: Quit

Esc

: Save & Exit Setup

F10

INTEGRATED PERIPHERALS
SUPERVISOR PASSWORD
USER PASSWORD
IDE HDD AUTO DETECTION
SAVE & EXIT SETUP
EXIT WITHOUT SAVING

: Select Item

↑↓→←

: Change Color

(Shift) F2

3.1.1 Standard CMOS Setup

Use the arrow keys to highlight “Standard CMOS Setup” and press
<Enter>. A screen similar to the one on the next page will appear.

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P5BTX/L System Board User’s Manual

ROM PCI/ISA BIOS

STANDARD CMOS SETUP

AWARD SOFTWARE, INC.

Date (mm:dd:yy) : Mon, Jul 29 1996
Time (hh:mm:ss) : 13: 27: 50

HARD DISKS
Primary Master
Primary Slave
Secondary Master
Secondary Slave

Drive A : 1.44M, 3.5 in.
Drive B : None

Video : EGA/VGA
Halt on : All Errors

: Quit

Esc

: Save & Exit Setup

F10

The settings on the screen are for reference only. Your version may not be
identical to this one.

Date
The date format is <day>, <month>, <date>, <year>. Day displays

a day, from Sunday to Saturday. Month displays the month, from
January to December. Date displays the date, from 1 to 31. Year
displays the year, from 1994 to 2079.

Time

:
:
:
:

TYPE
Auto
Auto
Auto
Auto

SIZE

CYLS
0
0
0
0

↑↓→←

(Shift)F2

HEAD
0
0
0
0

: Select Item
: Change

PRECOMP
0
0
0
0

SECTOR

LANDZ

0

0

0

0

0

0

0

0

Base Memory : 640K

Extended Memory : 64512K

Other Memory : 384K

Total Memory : 65536K

PU/PD/+/- : Modify

0
0
0
0

MODE
Auto
Auto
Auto
Auto

The time format is <hour>, <minute>, <second>. The time is based
on the 24-hour military-time clock. For example, 1 p.m. is 13:00:00.
Hour displays hours from 00 to 23. Minute displays minutes from 00
to 59. Second displays seconds from 00 to 59.

Primary Master, Primary Slave, Secondary Master and Secondary Slave
These categories allow you to enter the appropriate specifications for

the type of hard disk drive(s) installed in your system. There are 45
predefined types and 4 user definable types for hard drives. Type 1 to
Type 45 are predefined. Type “User” is user-definable.

Press <PgUp> or <PgDn> to select a numbered hard disk type or
type the number and press <Enter>. The hard disk will not work
properly if you enter improper information for this category.

36

Award BIOS Setup Utility

You can use Type “User” to define your own drive type manually. This
information should be included in the documentation from your hard
disk vendor.

If the controller of the HDD interface is ESDI, you must select “Type
1”. If the controller of the HDD interface is SCSI, you must select
“None”.

If you select Type ”Auto”, the BIOS will auto-detect the HDD & CD­ROM drive at the POST stage and show the IDE for the HDD &
CD-ROM drive. If a hard disk has not been installed, select “None”
and press <Enter>.

Drive A and Drive B
These categories identify the types of floppy disk drives installed. The

options for drive A and B are:

None No floppy drive is installed
360K, 5.25 in. 5-1/4 in. standard drive; 360KB capacity

1.2M, 5.25 in. 5-1/4 in. AT-type high-density drive; 1.2MB capacity
720K, 3.5 in. 3-1/2 in. double-sided drive; 720KB capacity

1.44M, 3.5 in. 3-1/2 in. double-sided drive; 1.44MB capacity

2.88M, 3.5 in. 3-1/2 in. double-sided drive; 2.88MB capacity

3

Note:

Choosing an incorrect type might cause your system to format the
floppy disk improperly and you cannot access your data.

Video
This category selects the type of video adapter used for the primary

system monitor. Although secondary monitors are supported, you do
not have to select the type in Setup. The default setting is EGA/VGA
(BIOS default, Setup default).

EGA/VGA Enhanced Graphics Adapter/Video Graphics Array. For

EGA, VGA, SVGA and PGA monitor adapters.

CGA 40 Color Graphics Adapter. Power up in 40-column mode.
CGA 80 Color Graphics Adapter. Power up in 80-column mode.
Mono Monochrome adapter. Includes high resolution

monochrome adapters.

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P5BTX/L System Board User’s Manual

Halt On
This category determines whether the system will stop if an error is

detected during power up. The default setting is All Errors (BIOS
default, Setup default).

No Errors The system boot will not stop for any errors detected.
All Errors The system boot will stop whenever the BIOS detects

a non-fatal error.

All, But Keyboard The system boot will not stop for a keyboard

error; it will stop for all other errors.

All, But Diskette The system boot will not stop for a disk error;

it will stop for all other errors.

All, But Disk/Key The system boot will not stop for a disk or

keyboard error; it will stop for all other errors.
Memory
The base memory size, extended memory size and the other memory

size cannot be altered; your computer automatically detects and displays
them.

Base Memory The POST will determine the amount of base (or

conventional) memory installed in the system. The
value of the base memory is typically 512K for
systems with 512K memory installed on the
motherboard or 640K for systems with 640K or
more memory installed on the motherboard.

38

Extended Memory The BIOS determines how much extended

memory is present during the POST. This is the
amount of memory located above 1MB in the
CPU’s memory address map.

Other Memory This refers to the memory located in the 640K to

1024K address space. This is the memory that can
be used for different applications. DOS uses this
area to load device drivers in an effort to keep as
much base memory free for application programs.
The BIOS is the most frequent user of this RAM
area since this is where it shadows the ROM.

Award BIOS Setup Utility

3.1.2 BIOS Features Setup

The BIOS Features Setup allows you to configure your system for basic
operation. Some entries are defaults required by the system board,
while others, if enabled, will improve the performance of your system
or let you set some features according to your preference.

ROM PCI/ISA BIOS

BIOS FEATURES SETUP

AWARD SOFTWARE, INC.

Virus Warning
CPU Internal Cache
External Cache
Quick Power On Self Test
Boot Sequence
Swap Floppy Drive
Boot Up Floppy Seek
Boot Up NumLock Status
Typematic Rate Setting
Typematic Rate (Chars/Sec)
Typematic Delay (Msec)
Security Option
PCI/VGA Palette Snoop
OS Select For DRAM > 64MB
HDD S.M.A.R.T. Capability

: Disabled
: Enabled
: Enabled
: Enabled
: A, C, SCSI
: Disabled
: Enabled
: On
: Disabled
: 6
: 250
: Setup
: Disabled
: Non-OS2
: Disabled

Video BIOS Shadow
C8000-CBFFF Shadow
CC000-CFFFF Shadow
D0000-D3FFF Shadow
D4000-D7FFF Shadow
D8000-DBFFF Shadow
DC000-DFFFF Shadow

ESC

: Quit

F1

: Help

F5

: Old Values

F6

: Load Fail-Safe Settings

F7

: Load Optimal Settings

The settings on the screen are for reference only. Your version may not be
identical to this one.

: Enabled
: Disabled
: Disabled
: Disabled
: Disabled
: Disabled
: Disabled

↑↓→←

PU/PD/+/­(Shift) F2

: Select Item
: Modify
: Color

3

Virus Warning
This category protects the boot sector and partition table of your hard

disk drive. When this item is enabled, the Award BIOS will monitor the
boot sector and partition table of the hard disk drive. If an attempt
is made to write to the boot sector or partition table of the hard disk
drive, the BIOS will halt the system and an error message will appear.

After seeing the error message, if necessary, you will be able to run
an anti-virus program to locate and remove the problem before any
damage is done.

Many disk diagnostic programs which attempt to access the boot
sector table will cause the warning message to appear. If you are
running such a program, we recommend that you first disable this
category. Also, disable this category if you are installing or running
certain operating systems like Windows® 95 or the operating system
may not install nor work.

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P5BTX/L System Board User’s Manual

CPU Internal Cache and External Cache
These categories speed up the memory access. The default value is

enabled. Enable the External Cache for better performance.
Quick Power On Self Test
This category speeds up Power On Self Test (POST) after you power

on your system. If it is set to Enabled, the BIOS will shorten or skip
some check items during POST.

Boot Sequence
This category determines which drive to search first for the disk

operating system (i.e. DOS). The default is A, C, SCSI.
The options are: A, C, SCSI; C, A, SCSI; C, CDROM, A; CDROM, C,

A; D, A, SCSI; E, A, SCSI; F, A, SCSI; SCSI, A, C; SCSI, C, A; C only or
LS120/ZIP, C.

Swap Floppy Drive
When this option is enabled and the system is booting from the floppy

drive, the system will boot from drive B instead of drive A. When this
option is disabled and the system is booting from the floppy drive, the
system will boot from drive A. You must have two floppy drives to
use this function.

Boot Up Floppy Seek
When enabled, the BIOS will check whether the floppy disk drive installed

is 40 or 80 tracks. Note that the BIOS cannot distinguish between 720K,

1.2M, 1.44M and 2.88M drive types as they are all 80 tracks. When
disabled, the BIOS will not search for the type of floppy disk drive by
track number. Note that there will not be any warning message if the drive
installed is 360KB.

Boot Up NumLock Status
This allows you to determine the default state of the numeric keypad.

By default, the system boots up with NumLock on wherein the function
of the numeric keypad is the number keys. When set to Off, the
function of the numeric keypad is the arrow keys.

40

Award BIOS Setup Utility

Typematic Rate Setting
When disabled, continually holding down a key on your keyboard will

cause the BIOS to report that the key is down. When the typematic
rate is enabled, the BIOS will not only report that the key is down,
but will first wait for a moment, and, if the key is still down, it will begin
to report that the key has been depressed repeatedly. For example,
you would use such a feature to accelerate cursor movements with
the arrow keys.

Typematic Rate (Chars/Sec)
This selection allows you to select the rate at which the keys are

accelerated.
Typematic Delay (Msec)
This selection allows you to select the delay between when the key

was first depressed and when the acceleration begins.
Security Option

System The system will not boot and access to Setup will be

denied if the correct password is not entered at the
prompt.

Setup The system will boot, but access to Setup will be denied

if the correct password is not entered at the prompt.

3

PCI/VGA Palette Snoop
It determines whether the MPEG ISA/VESA VGA Cards can work with

PCI/VGA or not. The default value is Disabled.

Enabled PCI/VGA working with MPEG ISA/VESA VGA cards.
Disabled PCI/VGA not working with MPEG ISA/VESA VGA cards.

OS Select for DRAM > 64MB
This item allows you to access the memory that is over 64MB in

OS/2. The options are: Non-OS/2 and OS/2.

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P5BTX/L System Board User’s Manual

HDD S.M.A.R.T. Capability
The system board supports SMART (Self-Monitoring, Analysis and

Reporting Technology) hard drives. SMART is a reliability prediction
technology for ATA/IDE and SCSI drives. The drive will provide
sufficient notice to the system or user to backup data prior to the
drive’s failure. The default is Disabled. If you are using hard drives
that support S.M.A.R.T., set this field to Enabled.

Video BIOS Shadow
Determines whether video BIOS will be copied to RAM. Video

Shadow will increase the video speed. Note that some graphics
boards require that this option be disabled. The default value is
Enabled.

Enabled Video shadow is enabled.
Disabled Video shadow is disabled.

C8000-CBFFF Shadow to DC000-DFFFF Shadow
These categories determine whether option ROMs will be copied to

RAM.

42

Enabled Optional shadow is enabled.
Disabled Optional shadow is disabled.

Award BIOS Setup Utility

3.1.3 Chipset Features Setup

ROM PCI/ISA BIOS

CHIPSET FEATURES SETUP

AWARD SOFTWARE, INC.

Auto Configuration
DRAM Timing
DRAM Leadoff Timing
DRAM Read Burst (EDO/FP)
DRAM Write Burst Timing
Fast EDO Lead Off
Refresh RAS# Assertion
Fast RAS To CAS Delay
DRAM Page Idle Timer
DRAM Enhanced Paging
Fast MA to RAS# Delay
SDRAM (CAS Lat/RAS-to-CAS)
SDRAM Loading
System BIOS Cacheable
Video BIOS Cacheable
8 Bit I/O Recovery Time
16 Bit I/O Recovery Time
Memory Hole At 15M-16M
PCI 2.1 Compliance
PCI Concurrency

The settings on the screen are for reference only. Your version may not be
identical to this one.

This section gives you functions to configure the system based on the
specific features of the chipset. The chipset manages bus speeds and
access to system memory resources. It also coordinates
communications between the conventional ISA bus and the PCI bus.
These items should not be altered unless necessary. Depending on your
add-in boards, you may not or should not enable some of those
features. The default settings have been chosen because they provide
the best operating conditions for your system. The only time you might
consider making any changes would be if you discovered some incom­patibility or that data was being lost while using your system.

:Enabled
:Normal
:11/7/4
:x333/x444
:x444
:Disabled
:5 Clks
:2
:6 Clks
:Enabled
:2 Clks
:3/3
:Light
:Disabled
:Disabled
:4
:2
:Disabled
:Disabled
:Enabled

Mem. Drive Str. (MA/RAS) : 16mA/16mA

ESC

: Quit

F1

: Help

F5

: Old Values

F6

: Load Fail-Safe Settings

F7

: Load Optimal Settings

↑ ↓ → ←

PU/PD/+/­(Shift) F2

: Select Item
: Modify
: Color

3

Note:

The “SDRAM (CAS Lat/RAS-to-CAS)” field will appear only if the
system board is installed with DIM modules.

SDRAM Loading
This field must be set according to the memory size of the DIMM

installed in one of the DIMM socket.

Light 16MB DIMM
Middle 32MB DIMM
Heavy 64MB DIMM

43

3

P5BTX/L System Board User’s Manual

3.1.4 Power Management Setup

The Power Management Setup allows you to configure your system to
most effectively save energy. If you like to use the soft power down
feature of Windows 95, you must enable the Power Management
below. Select Min. Power, Max. Power or User Defined. Either one can
be used as long as it is NOT disabled.

ROM PCI/ISA BIOS

POWER MANAGEMENT SETUP

AWARD SOFTWARE, INC.

Power Management
PM Control by APM
Video Off Method
Video Off After
MODEM Use IRQ
Doze Mode
Standby Mode
Suspend Mode
HDD Power Down
Throttle Duty Cycle
VGA Active Monitor
IRQ 8 Break Suspend

: Disabled
: Yes
: V/H SYNC+Blank
: Standby
: 3
: Disabled
: Disabled
: Disabled
: Disabled
: 62.5%
: Enabled
: Disabled

The settings on the screen are for reference only. Your version may not be
identical to this one.

** Reload Global Timer Events **
IRQ [3-7, 9-15], NMI
Primary IDE 0
Primary IDE 1
Secondary IDE 0
Secondary IDE 1
Floppy Disk
Serial Port
Parallel Port

ESC

: Quit

F1

: Help

F5

: Old Values

F6

: Load Fail-Safe Settings

F7

: Load Optimal Settings

: Enabled
: Disabled
: Disabled
: Disabled
: Disabled
: Disabled

: Enabled
: Disabled

↑ ↓ → ←

PU/PD/+/­(Shift) F2

: Select Item
: Modify
: Color

Power Management
This category allows you to select the type (or degree) of power saving

by changing the length of idle time that elapses before each of the
following modes are activated: Doze mode, Standby mode, and
Suspend mode.

Disable No power management. Disables the Doze, Standby and

Suspend modes.

Min. Power Saving Minimum power management. Doze Mode = 1

hr., Standby Mode = 1 hr., and Suspend Mode =

1 hr.

Max. Power Saving Maximum power management. Doze Mode = 1

min., Standby Mode = 1 min., and Suspend

Mode = 1 min.

User Defined Allows you to set each mode individually. When

enabled, each option ranges from 1 min. to 1 hr.

44

Award BIOS Setup Utility

PM Control by APM

Yes An Advanced Power Management device will be activated to

enhance the Max. Power Saving mode and stop the CPU’s in­ternal clock. Use this option in Windows® 95. (default)

No The system BIOS will ignore APM when initiating the Power

Management mode.
Video Off Method
This determines the manner in which the monitor is blanked.

V/H SYNC + Blank This selection will cause the system to turn off

the vertical and horizontal synchronization ports
and write blanks to the video buffer.

Blank Screen This option only writes blanks to the video buffer.
DPMS Initializes display power management signaling. Use

this option if your video board supports it.

Video Off After

N/A The system BIOS will never turn off the screen.
Suspend The screen is off when the system is in the Suspend

mode.

Standby The screen is off when the system is in the Standby

mode.

Doze The screen is off when the system is in the Doze

mode.

3

MODEM Use IRQ
This category is used to set an IRQ channel (IRQ 3, 4, 5, 7, 9, 10 or

11) for the modem installed in your system.
Doze Mode
This is user configurable only when the Power Management category

is set to User Defined. When enabled and after the set time of system
inactivity, the CPU clock will run at a slower speed (1/2 of full speed)
while all other devices still operate at full speed.

45

3

P5BTX/L System Board User’s Manual

Standby Mode
This is user configurable only when the Power Management category

is set to User Defined. When enabled and after the set time of system
inactivity, the CPU clock will run at a speed slower than the speed
during Doze mode (1/3 of full speed) while all other devices still op­erate at full speed.

Suspend Mode
This is user configurable only when the Power Management category

is set to User Defined. When enabled and after the set time of system
inactivity, the CPU and onboard peripherals will be shut off.

HDD Power Down
This is user configurable only when the Power Management category

is set to User Defined. When enabled and after the set time of system
inactivity, the hard disk drive will be powered down while all other
devices remain active.

Throttle Duty Cycle
This category allows you to select the rate of reduction with your ex-

ternal system bus clock to save power.

Options 12.5%, 25.0%, 37.5%, 50.0%, 62.5%, 75.0%, and 87.5%
Default 62.5%

VGA Active Monitor

Enabled VGA activities will cause the system to wake up from

power saving mode.

Disabled VGA activities will not cause the system to wake up from

power saving mode.
IRQ 8 Break Suspend and Reload Global Timer Events
When enabled, access to the specified IRQ will cause the system to

wake up completely from the power management mode. When
disabled, the system will not wake up from the power management
mode despite access to the specified IRQ.

46

Award BIOS Setup Utility

3.1.5 PNP/PCI Configuration

This section describes configuring the PCI bus system. It covers some
very technical items and it is strongly recommended that only
experienced users should make any changes to the default settings.

ROM PCI/ISA BIOS

PNP/PCI CONFIGURATION

AWARD SOFTWARE, INC.

PNP OS Installed
Resources Controlled By
Reset Configuration Data

The settings on the screen are for reference only. Your version may not be
identical to this one.

: No
: Auto
: Disabled

PCI IDE IRQ Map To

Primary IDE INT#

Secondary IDE INT#
Assign IRQ for VGA
Assign IRQ for USB

ESC

: Quit

F1

: Help

F5

: Old Values

F6

: Load Fail-Safe Settings

F7

: Load Optimal Settings

: PCI-Auto
: A
: B
: Enabled
: Enabled

↑ ↓ → ←

PU/PD/+/­(Shift) F2

: Select Item
: Modify
: Color

3

PNP OS Installed
This category is used to enable or disable Plug and Play with your

operating system.

Yes Select this option when you need Windows 95 to detect the

Plug and Play devices automatically.

No Select this option when you need the BIOS to detect the Plug

and Play devices for some compatible resources. We

recommend that you select this option. (default)
Resources Controlled By
The Award Plug and Play BIOS has the capability to automatically

configure all of the boot and Plug and Play compatible devices.

Auto The system will automatically detect the settings for you.

The categories that follow will not be shown on the
screen.

47

3

P5BTX/L System Board User’s Manual

Manual This will allow you to set the IRQ/DMA (you have

assigned your add-in card) to Legacy ISA or PCI/ISA PnP.
For non-PnP ISA cards, select Legacy ISA. For PnP ISA
or PCI cards, select PCI/ISA PnP.

Reset Configuration Data

Enabled The BIOS will reset the configuration data once

automatically. It will then recreate a new set of
configuration data.

Disabled The BIOS will not reset the configuration data.

PCI IDE IRQ Map To
This category is used to configure your system to the type of IDE disk

controller in use.

PCI-Auto The system will scan and determine the PCI slot that is

installed with an IDE controller card.

ISA Designates the ISA slot that is installed with an IDE

controller card; that is, if you are using an IDE controller

card.
Primary IDE INT# and Secondary IDE INT#
The Primary and Secondary IDE INT# categories are used to select

the PCI interrupt (A, B, C, or D) that is associated with the connected
hard drives.

Assign IRQ for VGA
When Enabled, the system automatically assigns an IRQ for the VGA

card installed. Your VGA card will need an IRQ address only when using
the video capture function of the card. If you are not using this function
and a new device requires an IRQ address, you can set this function
to Disabled. The IRQ address (previously occupied by the VGA card)
will be available for your new device.

Note:

When Disabled, a “Yellow” mark will appear in Windows 95’s
Device Manager.

48

Award BIOS Setup Utility

Assign IRQ for USB
When Enabled, the system automatically assigns an IRQ for the USB

device connected to your system. However, if you are not using USB
devices and an ISA slot requires an IRQ address, set this function to
Disabled. The IRQ address previously occupied by the USB device will
be available for the ISA slot.

Note:

When Disabled, a “Yellow” mark will appear in Windows 95’s
Device Manager.

3.1.6 Load Fail-Safe Settings

The “Load Fail-Safe Settings” option loads the troubleshooting default
values permanently stored in the ROM chips. These settings are not
optimal and turn off all high performance features. You should use these
values only if you have hardware problems. Highlight this option on the
main menu and press <Enter>. The message below will appear.

Load Fail-Safe Settings (Y/N)? N

If you want to proceed, type <Y> and press <Enter>. The default
settings will be loaded.

3

3.1.7 Load Optimal Settings

The “Load Optimal Settings” option loads optimized settings from the
BIOS ROM. Use the Setup default values as standard values for your
system.

Highlight this option on the main menu and press <Enter>. The
message below will appear.

Load Optimal Settings (Y/N)? N

Type <Y> and press <Enter> to load the Setup default values.

49

3

P5BTX/L System Board User’s Manual

3.1.8 Integrated Peripherals

ROM PCI/ISA BIOS

INTEGRATED PERIPHERALS

AWARD SOFTWARE, INC.

IDE HDD Block Mode
IDE Primary Master PIO
IDE Primary Slave PIO
IDE Secondary Master PIO
IDE Secondary Slave PIO
IDE Primary Master UDMA
IDE Primary Slave UDMA
IDE Secondary Master UDMA
IDE Secondary Slave UDMA
On-chip Primary PCI IDE
On-chip Secondary PCI IDE
USB Keyboard Support

The settings on the screen are for reference only. Your version may not be
identical to this one.

IDE HDD Block Mode

Enabled The IDE HDD uses the block mode. The system BIOS

will check the hard disk drive for the maximum block size

the system can transfer. The block size will depend on the

type of hard disk drive.

Disabled The IDE HDD uses the standard mode.

: Enabled
: Auto
: Auto
: Auto
: Auto
: Auto
: Auto
: Auto
: Auto
: Enabled
: Enabled
: Disabled

KBC input clock
Onboard FDC Controller
Onboard Serial Port 1
Onboard Serial Port 2
UART2 Mode Select

Onbpard Parallel Port
Parallel Port Mode

ESC

: Quit

F1

: Help

F5

: Old Values

F6

: Load Fail-Safe Settings

F7

: Load Optimal Settings

↑ ↓ → ←

PU/PD/+/­(Shift) F2

: 8MHz
: Enabled
: 3F8/IRQ4
: 2F8/IRQ3
: Disabled

: 378/IRQ7
: SPP

: Select Item
: Modify
: Color

IDE Primary Master/Slave PIO and IDE Secondary Master/Slave PIO
PIO means Programmed Input/Output. Rather than have the BIOS

issue a series of commands to effect a transfer to or from the disk
drive, PIO allows the BIOS to tell the controller what it wants and
then let the controller and the CPU perform the complete task by
themselves. Your system supports five modes, 0 (default) to 4, which
primarily differ in timing. When Auto is selected, the BIOS will select the
best available mode after checking your drive.

Auto The BIOS will automatically set the system according to your

hard disk drive’s timing.

0-4 You can select a mode that matches your hard disk drive’s

timing. Caution: Do not use the wrong setting or you will
have drive errors.

50

Award BIOS Setup Utility

IDE Primary Master/Slave UDMA and IDE Secondary Master/Slave
UDMA

These categories allow you to set the Ultra DMA in use. When Auto
is selected, the BIOS will select the best available option after checking
your hard drive or CD-ROM.

Auto The BIOS will automatically detect the settings for you.
Disabled The BIOS will not detect these categories.

On-Chip Primary PCI IDE and On-Chip Secondary PCI IDE
These categories allow you to enable or disable the primary and

secondary IDE controller. The default is Enabled. Select Disabled if you
want to add a different hard drive controller.

USB Keyboard Support
By default, USB Keyboard Support is Disabled. If you are operating

under DOS, make sure to enable this function.
KBC Input Clock
This is used to select the input clock of your keyboard. The options

are: 6MHz, 8MHz, 12MHz and 16MHz. The default is 8MHz.

3

Onboard FDC Controller

Enabled Enables the onboard floppy disk controller.
Disabled Disables the onboard floppy disk controller.

Onboard Serial Port 1 and Onboard Serial Port 2

Auto The system will automatically select an I/O address for the

onboard serial port 1 and serial port 2.

3F8/IRQ4, 2F8/IRQ3, 3E8/IRQ4, 2E8/IRQ3 Allows you to manually

select an I/O address for the onboard serial port 1 and
serial port 2.

Disabled Disables the onboard serial port 1 and/or serial port 2.

51

3

P5BTX/L System Board User’s Manual

UART2 Mode Select
The system board supports IrDA function for wireless connectivity

between your computer and peripheral devices.
You may not use IrDA (J10) and the COM 2 serial port at the

same time. If you are using the COM 2 serial port, make sure
“UART2 Mode Select” is set to Normal.

To use the IrDA function, follow the steps below.

1. Connect your IrDA cable to connector J10 on the system
board.

2. Set “UART2 Mode Select” to the type of IrDA standard
supported by your IrDA peripheral/device (IrDA or ASKIR).

3. The following will appear right after “UART2 Mode Select”.

IR Transmission Delay

If this option is Enabled, transmission of data will be slower. This
is recommended when you encounter transmission problem with
your device. The options are: Enabled and Disabled.

Onboard Parallel Port

378H/IRQ7, 3BCH/IRQ7, 278H/IRQ5 Selects the I/O address and

IRQ for the onboard parallel port.

Disabled Disables the onboard parallel port.
Parallel Port Mode
Parallel Port Mode will appear only if you selected an I/O address and

IRQ in Onboard Parallel Port (shown above). This option applies to
a standard specification and will depend on the type and speed of
your device. Refer to your peripheral’s manual for the best option.

Select the parallel port mode according to the type of printer device
connected to your onboard parallel port. The parallel modes are SPP,
EPP, ECP and ECP+EPP.

52

Award BIOS Setup Utility

If you selected EPP, “EPP Mode Select” will appear. This option applies
to standard specification. The options are EPP1.9 and EPP1.7. Default
setting: EPP1.9.

If you selected ECP, “ECP Mode Use DMA” will appear. This is used
to select a DMA channel for the parallel port. The options are 1 and

3. Default setting: 3.
If you selected ECP+EPP, “ECP Mode Use DMA” and “EPP Mode

Select” will both appear on the screen.

3.1.9 Supervisor Password

If you want to protect your system and setup from unauthorized entry,
set a supervisor’s password with the “System” option selected in the
BIOS Features Setup.

If you want to protect access to setup only, but not your system, set
a supervisor’s password with the “Setup” option selected in the BIOS
Features Setup. You will not be prompted for a password when you
cold boot the system.

Use the arrow keys to highlight the “Supervisor Password” option and
press <Enter>. The message below will appear.

3

Enter Password:

Type in the password. You are limited to eight characters. When done,
the message below will appear:

Confirm Password:

You are asked to verify the password. Type in exactly the same
password. If you type in a wrong password, you will be prompted to
enter the correct password again.

To delete or disable the password function, highlight “Supervisor
Password” and press <Enter>, instead of typing in a new password.
Press the <Esc> key to return to the main menu.

53

3

P5BTX/L System Board User’s Manual

3.1.10 User Password

If you want another user to have access only to your system but not
to setup, set a user’s password with the “System” option selected
in the BIOS Features Setup. If you want a user to enter a password
when trying to access setup, set a user’s password with the “Setup”
option selected in the BIOS Features Setup. Using user’s password
to enter Setup allows a user to access only the “User Password”
option that appears on the main screen. Access to all other options
is denied. To set, confirm, verify, disable or delete a user’s password,
follow the procedures described in the section “Supervisor Password”.
If you forget your password, refer to the procedure described in the
same section.

3.1.11 IDE HDD Auto Detection

Use this option to detect the parameters for the hard disk drives
installed in your system. These parameters will then be automatically
entered into the "Standard CMOS Setup". The IDE HDD Auto
Detection screen displays the following categories of information: Size,
Cylinders, Heads, Precomp, LandZone, Sectors and Mode.

ROM PCI/ISA BIOS

CMOS SETUP UTILITY

AWARD SOFTWARE, INC.

HARD DISKS TYPE SIZE CYLS HEAD RECOMP LANDZ SECTOR MODE

Primary Master:

Select Primary Master Option (N=Skip): N
OPTIONS SIZE CYLS HEAD RECOMP LANDZ SECTOR MODE
2 (Y) 853 827 32 0 1653 63 LBA

1 853 1654 16 65535 1653 63 Normal
3 853 827 32 65536 1653 63 Large

Note: Some OS (like SCO-UNIX) must be “NORMAL” for installation

ESC: Skip

The settings on the screen are for reference only. Your version may not be
identical to this one.

For hard drives larger than 528MB, you would typically select the
LBA type. Certain operating systems require that you select Normal
or Large. Please check your operating system’s manual or Help desk
on which one to select.

54

Award BIOS Setup Utility

3.1.12 Save & Exit Setup

When all the changes have been made, highlight “Save & Exit Setup”
and press <Enter>. The message below will appear:

Save to CMOS and Exit (Y/N)? N

Type “Y” and press <Enter>. The modifications you have made will be
written into the CMOS memory, and the system will reboot. You will
once again see the initial diagnostics on the screen. If you wish to make
additional changes to the setup, press <Ctrl> <Alt> <Esc>
simultaneously or <Del> after memory testing is done.

3.1.13 Exit Without Saving

When you do not want to save the changes you have made, highlight
“Exit Without Saving” and press <Enter>. The message below will
appear:

Quit Without Saving (Y/N)? N

Type “Y” and press <Enter>. The system will reboot and you will once
again see the initial diagnostics on the screen. If you wish to make any
changes to the setup, press <Ctrl> <Alt> <Esc> simultaneously or
<Del> after memory testing is done.

3

55

4

P5BTX/L System Board User’s Manual

CHAPTER

Supported Softwares

56

Supported Softwares

4.1 Desktop Management Interface (DMI)

The system board comes with a DMI built into the BIOS. DMI, along
with the appropriately networked software, is designed to make
inventory, maintenance and troubleshooting of computer systems easier.
With DMI, a network administrator or MIS engineer can remotely
access some information about a particular computer system without
physically going to it. Quite often a service call may be unnecessary as
the problem can be solved remotely.

The DMI utility in the BIOS automatically records various information
about your system configuration. Information about the type and speed
of CPU, type and amount of memory for each memory slot, BIOS
revision level, types of add-in PCI boards and components, certain
revision numbers of hardware installed, etc. are automatically detected
and stored in the DMI pool, which is a part of the system board's
Plug and Play BIOS. Additional information, such as ISA based
peripherals, which may not be automatically detected, can be manually
recorded in the DMI pool by using the Add DMI menu. The DMI pool
data is then verified or updated whenever the system hardware or
setup is altered.

4

4.1.1 Running the DMI Utility

To run the DMI utility, type: DMICFG.EXE. You can download this utility
from http://www.dfi.com.tw - BIOS & DRIVERS section or ftp.dfiusa.com

- /pub/DMI directory.
The DMI utility must run in real mode with at least 180K of base

memory. Memory managers like HIMEM.SYS (required by Windows)
must not be installed. You may do this by using one of the 3 methods
listed below.

1. Boot up from a system diskette without the AUTOEXEC.BAT and
CONFIG.SYS files,

2. “REM” HIMEM.SYS in the CONFIG.SYS, or

3. Press <F5> during bootup to bypass your AUTOEXEC.BAT and
CONFIG.SYS files.

57

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P5BTX/L System Board User’s Manual

4.1.2 Using the DMI Utility

[Edit DMI] [Add DMI] [Load DMI File] [Save DMI File]

s

n

s

↑ ↓
→

Award DMI Configuration Utility Copyright Award Software Inc, 1996

BIOS

System

Enclosure/Chassis

Processor

Memory Controller

Memory Module
Memory Module
Memory Module
Memory Module

Cache

Cache
Port Connector
Port Connector
Port Connector
Port Connector
Port Connector
Port Connector
Port Connector

System Slots

←

Move cursor ENTER-Accept DEL-Delete ESC-Abort&Exit

Type : BIOS Information
Handle : 0000

Vendor Name :
BIOS Version :
BIOS Starting Address Segment : F000
BIOS Build Date :
BIOS Characteristics :
Size of BIOS ROM : 0128K

*** BIOS Auto Detect ***

The four menus located on top of the DMI Configuration Utility screen
are Edit DMI, Add DMI, Load DMI File and Save DMI File. Use the
← or → (left or right) arrow keys to select a menu from the Menu
bar.

On the left side of the screen is a list of the system configuration items.
Use the ↑ or ↓ (up or down) arrow keys to select an item.

The commands at the bottom of the screen will allow you to navigate
through the various setup menus.

Edit DMI

1. Use the ← or → arrow keys to select the Edit DMI menu.

2. Highlight the item on the left screen that you would like to edit
by using the ↑ or ↓ arrow keys, then press <Enter>.

3. The cursor will move to the screen you select allowing you to edit
information. The screen will also display the auto-detected
information.

4. Press <F10> to update the edited information into the flash ROM.

58

Supported Softwares

Add DMI

1. Use the ← or → arrow keys to select the Add DMI menu.

2. Highlight the item on the left screen that you would like to add
by using the ↑ or ↓ arrow keys, then press <Enter>.

3. The cursor will move to the screen you select allowing you to enter
information about the added item.

4. Press <F10> to save information into the flash ROM.

To view information about the added items, go to the Edit DMI menu.

Load DMI File

1. Use the ← or → arrow keys to select the Load DMI File menu.

2. The following message will appear.

Press [Enter] to select DMI file for load

Press <Enter>.

3. The DMI files will appear on the screen. Select the file you would
like to load and press <Enter>.

4

4. The following message will appear.

Do you want to execute? (Y/N)

Type <Y>. All previous DMI structures will be destroyed and the
new file will be saved into the flash ROM.

Save DMI File

1. Use the ← or → arrow keys to select the Save DMI File menu.

2. The following message will appear.

Press [Enter] to select DMI file for save

Press <Enter>.

3. Enter the directory and filename under which you would like the
DMI file saved.

59

4

P5BTX/L System Board User’s Manual

4.2 IDE Drivers

The system board comes with a utility diskette. If you are running
Windows 95 (Win95, Win95+, Win95 OSR1: Windows 95
OEM Service Release 1, Win95 OSR2: Windows 95 OEM Service
Release 2.0 or Win95 OSR2.1: Windows 95 OEM Service
Release 2.0 plus USB Supplement), you need to run this utility.
Please refer to the “Readme” file contained in the provided
diskette.

All steps or procedures are subject to change without notice as
the softwares are occassionally updated. Please refer to the
readme files for the latest information.

60

Identifying Processors

APPENDIX

Identifying Processors

A

61

A

BP80502-SSS

BP80502-SSS

6x86L-P200+GP

Cyrix

PROCESSOR

FAN/HEATSINK REQUIRED

P5BTX/L System Board User’s Manual

A.1 Intel Processors

SXXXX/RSS

SXXXX/RSS

XXX

SXXXX/KLM

XXX

R (voltage range)
V for VRE voltage range
S for Standard voltage range

SXXXX/KLM
K = V for VRE voltage range, S for Standard voltage range

L = M for min valid MD timings, S for min valid standard

timings

M = U is not tested for DP, S is tested for DP, UP and MP

A.2 Cyrix Processors

62

x

6

8

150MHz

2.8V

Cyr

x

8

6

6x86MX-PR166
60MHz Bus 2.5x

2.9V

R

R

x

I

6

6x86L-PR200+GP
Product

name

P-rating

6x86MX-PR166

Product

name

P-rating

Grid-array
package

60MHz Bus 2.5x

Processor

clock
speed

150MHz

Processor

clock
speed

2.9V

Core

voltage

2.8V

Core

voltage

(or as
marked)

PR166

AMD-K5-PR166ABX

AMD

AMD-K6-233ANR

AMD

A.3 AMD Processors

AMD-K5-PR166ABX

Identifying Processors

A

AMD

AMD

3.20V
B 9724EJFW

c

1997 AMD

K5 = Processor core
PR166 = Performance rating
A = Package type: Type A = CPGA
B = Operating voltage:

B: 3.45V-3.60V
C: 3.30V-3.465V
F: 3.135V-3.465V
H: 2.76V-3.0V/3.3V (core/IO)
J: 2.57V-2.84V/3.3V (core/IO)
K: 2.38V-2.63V/3.3V (core/IO)

X =Case temperature

W: 55oC R: 70oC Q: 65oC
Y: 75oC X: 65oC Z: 85oC

AMD-K6-233ANR

K6 = Processor core
233 = Performance rating
A = Package type: Type A = CPGA
B = Operating voltage:

N: 3.1V-3.3V (core)/3.135V-3.6V (I/O)
L: 2.755V-3.045V (core)/3.135V-3.6V (I/O)

X =Case temperature

W: 55oC R: 70oC Q: 65oC
Y: 75oC X: 65oC Z: 85oC

63

B

P5BTX/L System Board User’s Manual

APPENDIX

System Error Message

64

System Error Message

When the BIOS encounters an error that requires the user to
correct something, either a beep code will sound or a message will
be displayed in a box in the middle of the screen and the message,
PRESS F1 TO CONTINUE, CTRL-ALT-ESC or DEL TO ENTER
SETUP, will be shown in the information box at the bottom. Enter
Setup to correct the error.

B.1 POST Beep

There are two kinds of beep codes in the BIOS. One code
indicates that a video error has occured and the BIOS cannot
initialize the video screen to display any additional information. This
beep code consists of a single long beep followed by three short
beeps. The other code indicates that a DRAM error has occured.
This beep code consists of a single long beep.

B.2 Error Messages

One or more of the following messages may be displayed if the
BIOS detects an error during the POST. This list indicates the error
messages for all Awards BIOSes:

B

CMOS BATTERY HAS FAILED
The CMOS battery is no longer functional. It should be replaced.

Caution:

Danger of explosion if battery incorrectly replaced. Replace only
with the same or equivalent type recommended by the
manufacturer. Dispose of used batteries according to the battery
manufacturer’s instructions.

CMOS CHECKSUM ERROR
Checksum of CMOS is incorrect. This can indicate that CMOS has
become corrupt. This error may have been caused by a weak
battery. Check the battery and replace if necessary.

DISPLAY SWITCH IS SET INCORRECTLY
The display switch on the motherboard can be set to either
monochrome or color. This indicates the switch is set to a different
setting than indicated in Setup. Determine which setting is correct,
either turn off the system and change the jumper or enter Setup
and change the VIDEO selection.

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P5BTX/L System Board User’s Manual

FLOPPY DISK(S) fail (80)
Unable to reset floppy subsystem.

FLOPPY DISK(S) fail (40)
Floppy type mismatch.

Hard Disk(s) fail (80)
HDD reset failed.

Hard Disk(s) fail (40)
HDD controller diagnostics failed.

Hard Disk(s) fail (20)
HDD initialization error.

Hard Disk(s) fail (10)
Unable to recalibrate fixed disk.

Hard Disk(s) fail (08)
Sector Verify failed.

Keyboard is locked out - Unlock the key
The BIOS detects that the keyboard is locked. Keyboard controller
is pulled low.

Keyboard error or no keyboard present
Cannot initialize the keyboard. Make sure the keyboard is attached
correctly and no keys are being pressed during the boot.

Manufacturing POST loop
System will repeat POST procedure infinitely while the keyboard
controller is pull low. This is also used for the M/B burn in test at
the factory.

BIOS ROM checksum error - System halted
The checksum of ROM address F0000H-FFFFFH is bad.

Memory test fail
The BIOS reports memory test fail if the memory has error(s).

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APPENDIX

Troubleshooting

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P5BTX/L System Board User’s Manual

C.1 Troubleshooting Checklist

This chapter of the manual is designed to help you with problems
that you may encounter with your personal computer. To efficiently
troubleshoot your system, treat each problem individually. This is to
ensure an accurate diagnosis of the problem in case a problem has
multiple causes.

Some of the most common things to check when you encounter
problems while using your system are listed below.

1. The power switch of each peripheral device is turned on.

2. All cables and power cords are tightly connected.

3. The electrical outlet to which your peripheral devices are
connected is working. Test the outlet by plugging in a lamp or
other electrical device.

4. The monitor is turned on.

5. The display’s brightness and contrast controls are adjusted
properly.

6. All add-in boards in the expansion slots are seated securely.

7. Any add-in board you have installed is designed for your system
and is set up correctly.

Monitor/Display

If the display screen remains dark after the system is turned on:

1. Make sure that the monitor’s power switch is on.

2. Check that one end of the monitor’s power cord is properly
attached to the monitor and the other end is plugged into a
working AC outlet. If necessary, try another outlet.

3. Check that the video input cable is properly attached to the
monitor and the system’s display adapter.

4. Adjust the brightness of the display by turning the monitor’s
brightness control knob.

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Troubleshooting

The picture seems to be constantly moving.

1. The monitor has lost its vertical sync. Adjust the monitor’s vertical
sync.

2. Move away any objects, such as another monitor or fan, that
may be creating a magnetic field around the display.

3. Make sure your video card’s output frequencies are supported
by this monitor.

The screen seems to be constantly wavering.

1. If the monitor is close to another monitor, the adjacent monitor
may need to be turned off. Fluorescent lights adjacent to the
monitor may also cause screen wavering.

Power Supply

When the computer is turned on, nothing happens.

1. Check that one end of the AC power cord is plugged into a live
outlet and the other end properly plugged into the back of the
system.

2. Make sure that the voltage selection switch on the back panel is
set for the correct type of voltage you are using.

3. The power cord may have a “short” or “open”. Inspect the cord
and install a new one if necessary.

C

Floppy Drive

The computer cannot access the floppy drive.

1. The floppy diskette may not be formatted. Format the diskette
and try again.

2. The diskette may be write-protected. Use a diskette that is not
write-protected.

3. You may be writing to the wrong drive. Check the path
statement to make sure you are writing to the targeted drive.

4. There is not enough space left on the diskette. Use another
diskette with adequate storage space.

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P5BTX/L System Board User’s Manual
Hard Drive

Hard disk failure.

1. Make sure the correct drive type for the hard disk drive has
been entered in the BIOS.

2. If the system is configured with two hard drives, make sure the
bootable (first) hard drive is configured as Master and the
second hard drive is configured as Slave. The master hard drive
must have an active/bootable partition.

Excessively long formatting period.

1. If your hard drive takes an excessively long period of time to
format, it is likely a cable connection problem. However, if your
hard drive has a large capacity, it will take a longer time to
format.

Parallel Port

The parallel printer doesn’t respond when you try to print.

1. Make sure that your printer is turned on and that the printer is
on-line.

2. Make sure your software is configured for the right type of
printer attached.

3. Verify that the onboard LPT port’s I/O address and IRQ settings
are configured correctly.

4. Verify that the attached device works by attaching it to a parallel
port that is working and configured correctly. If it works, the
printer can be assumed to be in good condition. If the printer
remains inoperative, replace the printer cable and try again.

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Troubleshooting

Serial Port

The serial device (modem, printer) doesn’t output anything or is
outputting garbled characters.

1. Make sure that the serial device’s power is turned on and that
the device is on-line.

2. Verify that the device is plugged into the correct serial port on
the rear of the computer.

3. Verify that the attached serial device works by attaching it to a
serial port that is working and configured correctly. If the serial
device does not work, either the cable or the serial device has a
problem. If the serial device works, the problem may be due to
the onboard I/O or the address setting.

4. Make sure the COM settings and I/O address are configured
correctly.

Keyboard

Nothing happens when a key on the keyboard was pressed.

1. Make sure the keyboard is properly connected.

2. Make sure there are no objects resting on the keyboard and
that no keys are pressed during the booting process.

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System Board

1. Make sure the add-in card is seated securely in the expansion
slot. If the add-in card is loose, power off the system, re-install
the card and power up the system.

2. Check the jumper settings to ensure that the jumpers are
properly set.

3. Verify that all memory modules are seated securely into the
memory sockets.

4. Make sure the SIMMs are in the correct locations.

5. If the board fails to function, place the board on a flat surface
and seat all socketed components. Gently press each component
into the socket.

6. If you made changes to the BIOS settings, re-enter setup and
load the BIOS defaults.

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