R
P/I-XP55T2P4
Pentium Motherboard
USER'S MANUAL
USER'S NOTICE
No part of this product, including the product and software may be reproduced,
transmitted, transcribed, stored in a retrieval system, or translated into any language in any form by any means without the express written permission of ASUSTeK
COMPUTER INC. (hereinafter referred to as ASUS) except documentation kept
by the purchaser for backup purposes.
ASUS provides this manual "as is" without warranty of any kind, either express or
implied, including but not limited to the implied warranties or conditions of merchantability or fitness for a particular purpose. In no event shall ASUS be liable for
any loss or profits, loss of business, loss of use or data, interruption of business, or
for indirect, special, incidental, or consequential damages of any kind, even if ASUS
has been advised of the possibility of such damages arising from any defect or error
in this manual or product. ASUS may revise this manual from time to time without
notice.
Products mentioned in this manual are mentioned for identification purposes only.
Product names appearing in this manual may or may not be registered trademarks
or copyrights of their respective companies.
The product name and revision number are both printed on the board itself. Manual
revisions are released for each board design represented by the digit before and
after the period of the manual revision number. Manual updates are represented by
the third digit in the manual revision number. For updated BIOS, drivers, or product release information you may visit ASUS' home page at: http://www.asus.com.tw/
© Copyright 1996 ASUSTeK COMPUTER INC. All rights reserved.
Product Name:
P/I-XP55T2P4
Manual Revison: 3.00
Manual Release: October 1996
II
ASUS P/I-XP55T2P4 User's Manual
ASUS CONTACT INFORMATION
ASUSTeK COMPUTER INC.
Marketing Info:
Address:
Telephone:
Fax:
Email:
150 Li-Te Road, Peitou, Taipei, Taiwan, ROC
886-2-894-3447
886-2-894-3449
info@asus.com.tw
Technical Support:
Fax:
BBS:
Email:
WWW:
Gopher:
FTP:
886-2-895-9254
886-2-896-4667
tsd@asus.com.tw
http://www.asus.com.tw/
gopher.asus.com.tw
ftp.asus.com.tw/pub/ASUS
ASUS COMPUTER INTERNATIONAL
Marketing Info:
Address:
Telephone:
Fax:
Email:
721 Charcot Avenue, San Jose, CA 95131, USA
1-408-474-0567
1-408-474-0568
info-usa@asus.com.tw
Technical Support:
BBS:
Email:
1-408-474-0569
tsd-usa@asus.com.tw
ASUS COMPUTER GmbH
Marketing Info:
Address:
Telephone:
Fax:
Email:
Harkort Str. 25, 40880 Ratingen, BRD, Germany
49-2102-445011
49-2102-442066
info-ger@asus.com.tw
Technical Support:
BBS:
Email:
49-2102-448690
tsd-ger@asus.com.tw
ASUS P/I-XP55T2P4 User's Manual
III
CONTENTS
I. INTRODUCTION ........................................................ 1
How this manual is organized .......................................................... 1
Item Checklist .................................................................................. 1
Features of This Motherboard .......................................................... 2
II. FEATURES ................................................................. 2
Parts of the Motherboard ................................................................. 3
III. INSTALLATION ....................................................... 4
Map of the ASUS Motherboard ....................................................... 4
Jumpers ................................................................................. 5
Expansion Slots .................................................................... 5
Connectors ............................................................................ 5
Installation Steps .............................................................................. 6
1. Jumpers ........................................................................................ 6
Jumper Settings .................................................................... 7
2. System Memory (DRAM & SRAM) ........................................ 12
TAG SRAM Upgrade: ........................................................ 12
DRAM Memory Installation Procedures: .......................... 13
Static RAM (SRAM) for Level 2 (External) Cache ...................... 14
Compatible Cache Modules for this Motherboard ............. 14
3. Central Processing Unit (CPU) ................................................. 15
4. Expansion Cards ....................................................................... 16
Expansion Card Installation Procedure: ............................. 16
Assigning IRQs for Expansion Cards ................................. 16
Assigning DMA Channels for ISA Cards ........................... 17
ASUS MediaBus Card ........................................................ 18
5. External Connectors .................................................................. 19
Power Connection Procedures ............................................ 25
Support Software ...................................................................... 25
IV. BIOS SOFTWARE .................................................. 26
6. BIOS Setup ............................................................................... 26
Load Defaults ..................................................................... 27
Standard CMOS Setup ............................................................. 27
Details of Standard CMOS Setup: ...................................... 28
IV
ASUS P/I-XP55T2P4 User's Manual
CONTENTS
BIOS Features Setup ................................................................ 30
Details of BIOS Features Setup: ......................................... 31
Chipset Features Setup ............................................................. 33
Power Management Setup ........................................................ 36
Details of Power Management Setup: ................................ 37
PNP and PCI Setup .................................................................. 39
Load BIOS Defaults ................................................................. 40
Load Setup Defaults ................................................................. 41
Supervisor Password and User Password ................................ 41
IDE HDD Auto Detection ........................................................ 43
Save and Exit Setup ................................................................. 44
Exit Without Saving ................................................................. 44
Flash Memory Writer Utility ......................................................... 45
The Flash Memory Writer Utility Screen: .......................... 46
V. DESKTOP MANAGEMENT ................................... 49
Desktop Management Interface (DMI) .......................................... 49
Introducing the DMI Configuration Utility ........................ 49
System Requirements ......................................................... 49
Using the DMI Configuration Utility ................................. 50
Notes: .................................................................................. 50
VI. PCI-SC200 SCSI Card ............................................ 53
NCR SCSI BIOS and Drivers ........................................................ 53
The PCI-SC200 SCSI Interface Card ............................................ 54
Setting Up the PCI-SC200 ....................................................... 54
Setting the INT Assignment ..................................................... 55
Terminator Settings .................................................................. 55
SCSI ID Numbers .................................................................... 56
VII. I-A16C Audio Card ............................................... 57
I-A16C Audio Features ............................................................ 57
Unpacking and Handling Precautions ...................................... 57
Layout and Connectors ............................................................ 58
Connectors .......................................................................... 58
VIII. DOS 3.1 & Windows 3.1x Audio Software
(with optional I-A16C Audio Card Bundle Only)
IX. Windows 95 Audio Software
(with optional I-A16C Audio Card Bundle Only)
ASUS P/I-XP55T2P4 User's Manual
V
FCC & DOC COMPLIANCE
Federal Communications Commission Statement
This device complies with FCC Rules Part 15. Operation is subject to the following
two conditions:
•
•
This device may not cause harmful interference, and
This device must accept any interference received, including interference that
may cause undesired operation.
This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if
not installed and used in accordance with manufacturer's instructions, may cause
harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
•
•
•
•
Re-orient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment to an outlet on a circuit different from that to which
the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
WARNING: The use of shielded cables for connection of the monitor to the graphics
card is required to assure compliance with FCC regulations. Changes or modifications to this unit not expressly approved by the party responsible for compliance
could void the user's authority to operate this equipment.
Canadian Department of Communications Statement
This digital apparatus does not exceed the Class B limits for radio noise emissions
from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications.
VI
ASUS P/I-XP55T2P4 User's Manual
I. INTRODUCTION
I. INTRODUCTION
(Manual / Checklist)
How this manual is organized
This manual is divided into the following sections:
I.
Introduction:
II. Features:
III. Installation:
IV. BIOS Setup:
V. ASUS DMI Utility:
VI. ASUS PCI-SC200:
VII. ASUS I-A16C:
VIII. DOS/Win3.1x:
IX. Windows 95:
Manual information and checklist
Information and specifications
Instructions on setting up the motherboard
BIOS software setup information
BIOS supported Desktop Management Interface
Installation of an optional SCSI card
Installation of an optional Audio card
Audio Software Manual (with I-A16C bundle only)
Audio Software Manual (with I-A16C bundle only)
Item Checklist
Please check that your package is complete. If you discover damaged or missing
items, please contact your retailer.
√ The ASUS P/I-XP55T2P4 motherboard with built-in 2 serial, 1 parallel,
PS/2 Keyboard, and PS/2 Mouse connectors
√ 1 IDE ribbon cable
√ 1 floppy ribbon cable
√ Support software (view FILELIST.TXT detailed contents and description)
• Bus Master IDE Drivers
• PFLASH BIOS Utility
√ This user's manual (audio sections included with I-A16C bundle only)
Optional infrared module
Optional ASUS PCI-SC200 Fast-SCSI card
Optional ASUS I-A16C Audio Card
ASUS P/I-XP55T2P4 User's Manual
1
II. FEATURES
Features of This Motherboard
The ASUS P/I-XP55T2P4 is carefully designed for the demanding PC user who
wants a great many features in a small package. This motherboard:
•
•
II. FEATURES
(Features)
•
•
•
•
•
•
•
•
•
•
2
Easy Installation: Is equipped with BIOS that supports auto detection of hard
drives and Plug and Play to make setup of hard drives and expansion cards
virtually automatic.
Multi-Processor/Multi-Speed Support: Supports one Pentium (75-200MHz),
Cyrix P166+ (Rev 2.7 or later), or AMD-K5 (PR75-100MHz) (See page 11).
Intel Chipset: Features Intel's 430HX PCIset with I/O subsystems.
Error Checking and Correcting (ECC): Using Intel's 430HX PCIset and
parity DRAM modules can detect multi-bit errors and correct 1-bit memory
errors.
Desktop Management Interface (DMI): Supports DMI through BIOS which
allows hardware to communicate within a standard protocol creating a higher
level of compatibility. (See section V)
ATX Power Connector: Has a single easy-to-install connector for 3.3V, 5V,
12V, and a new soft-power control. (Requires an ATX power supply)
L2 Cache: Provides the option of 0KB upgradeable to 256KB or 512KB,
onboard 256KB upgradeable to 512KB, or 512KB onboard Pipelined Burst
SRAM. Upgrades are made through a Synchronous SRAM cache module.
(See page 14 for compatible cache modules.)
Versatile DRAM Memory Support: Supports 72-pin SIMMs of 4MB, 8MB,
16MB, 32MB, or 64MB to form a memory size between 8MB to 256MB.
Supports both Fast Page Mode (FPM) and Extended Data Output (EDO)
SIMMs. (see page 12)
ISA and PCI Expansion Slots: Provides four 16-bit ISA slots, three 32-bit
PCI slots, and one PCI/MediaBus 2.0 which allows the use of either an standard PCI card or the ASUS MediaBus Card.
ASUS MediaBus Rev 2.0: Features an expansion slot extension shared with
PCI Slot 4 for an optional high-performance expansion card which includes
two functions in one easy-to-install card. (For revision compatibility information, please refer to page 18.)
Super Multi-I/O: Provides two high-speed UART compatible serial ports
and one parallel port with EPP and ECP capabilities. UART2 can also be
directed from COM2 to the Infrared Module for wireless connections. Two
floppy drives of either 5.25" or 3.5" (1.44MB or 2.88MB) are also supported
without an external card. The Japanese "Floppy 3 mode" (3.5" 1.2MB)
floppy standard is also supported.
NCR SCSI BIOS: This motherboard has firmware that supports the optional
ASUS PCI-SC200 SCSI controller cards.
ASUS P/I-XP55T2P4 User's Manual
II. FEATURES
•
PCI Bus Master IDE Controller: Comes with an onboard PCI Bus Master
IDE controller with two connectors that supports four IDE devices in two channels, provides faster data transfer rates, and supports Enhanced IDE devices
such as Tape Backup and CD-ROM drives. This controller supports PIO Modes
3 and 4 and Bus Master IDE DMA Mode 2. BIOS supports IDE CD-ROM
or SCSI boot-up.
Optional IrDA: This motherboard supports an optional infrared port module
for wireless interface.
Parts of the Motherboard
Serial, Parallel, PS/2 Mouse, PS/2 Keyboard
L2 Upgrade Cache
Expansion Slot
II. FEATURES
(Parts of Board)
•
Onboard 256KB/
512KB Pipelined
Burst L2 Cache Floppy & IDE
CPU ZIF Socket 7
Intel's 430HX
PCIset
ATX Power
(4) 72-pin SIMM
Sockets
(3) PCI Slots
Super Multi-I/O
PCI 4 or ASUS
MediaBus 2.0
(4) ISA Slots
Programmable Flash ROM
Infrared Port
ASUS P/I-XP55T2P4 User's Manual
3
III. INSTALLATION
III. INSTALLATION
(Map of Board)
PS/2
Keyboard
PS/2
Mouse
CPU Vcore Volt (2.5-2.9)
2.5
2.7
2.8
2.9
JP1
Res.
CPU Volt (STD/VRE)
Bus Freq.
JP9
JP10
Freq. Ratio
JP12
JP13
L2 Cache (256/512)
Memory Cached (64/512)
JP14
JP15
Tag SRAM Upgrade
CPU Fan Power
Parallel Printer
Board Power Input
for ATX Power Supply
CPU ZIF Socket 7
Pipelined Burst Level 2 Cache Expansion Slot
COM 1
Map of the ASUS Motherboard
256KB/512KB Onboard L2 Cache
SIMM Socket 1 (Bank 0)
Primary IDE
SIMM Socket 2 (Bank 0)
Secondary IDE
SIMM Socket 3 (Bank 1)
Floppy Drives
COM 2
SIMM Socket 4 (Bank 1)
PCI Slot 1
Universal Serial Bus
JP16
Multi-I/O (En/Dis)
PCI Slot 2
Super
Multi-I/O
PCI Slot 3
ISA Slot 3
IR Conn
ISA Slot 4
4
Block Write (Dis/En)
ISA Slot 2
JP19
JP17
JP18
ISA Slot 1
CR2032
3 Volt
Lithium Cell
MediaBus 2.0
CMOS (Operate/Clear)
PCI Slot 4
Case Connector
ASUS P/I-XP55T2P4 User's Manual
IDE LED
III. INSTALLATION
1) JP14
2) JP18
3) JP15
4) JP16
5) JP17
6) JP19
7) JP9, JP10
8) JP12, JP13
9) JP1
10) Vcore
p. 7
p. 7
p. 8
p. 8
p. 9
p. 9
p. 10
p. 10
p. 11
p. 11
Total Level 2 Cache Size Setting (256KB/512KB)
Flash ROM Boot Block Program (Enable/Disable)
Memory Cacheable Size (64MB/512MB)
SMC37C669 Multi-I/O Selection (Enable/Disable)
CMOS RAM (Operation/Clear CMOS Data)
Battery Test Jumper (Operation/Test Mode)
CPU External Clock (BUS) Frequency Selection
CPU:BUS Frequency Ratio
Single Power Plane Voltage Regulator (STD/VRE)
Dual Power Plane Voltage Regulator (2.5V-2.9V)
p. 12
p. 12
p. 14
p. 15
p. 16
p. 16
p. 18
DRAM Memory Expansion slots
Upgrade socket for TAG SRAM
Socket for Pipelined Burst SRAM Cache Module
Socket for Central Processing Unit (CPU)
16-bit ISA Bus Expansion slots
32-bit PCI Bus Expansion slots
32-bit PCI Bus Slot and MediaBus
p. 19
p. 19
p. 19
p. 19
p. 20
p. 21
p. 21
p. 22
p. 22
p. 22
p. 22
p. 23
p. 23
p. 23
p. 24
p. 24
PS/2 Keyboard connector (6-pin female)
PS/2 Mouse connector (6-pin female)
Parallel Port connector (25-pin female)
Serial Port COM1 & COM2 (9-pin male)
Motherboard ATX Power connector (20-pin Block)
Primary/Secondary IDE connectors (40-pin Blocks)
Floppy Drive connector (34-pin Block)
IDE_LED activity light
System Power LED (2-pins)
Keyboard Lock Switch lead (5-pins)
SMI Switch lead (2-pins)
Power switch for ATX power supply only
Reset Switch lead (2-pins)
Speaker connector (4-pins)
CPU 12V Cooling Fan connector
Infrared Port Module connector
III. INSTALLATION
(Map of Board)
Jumpers
Expansion Slots
1)
2)
3)
4)
5)
6)
7)
SIMM Slots
TAG SRAM
Cache Expansion
ZIF Socket 7
ISA Slots 1, 2, 3, 4
PCI Slots 1, 2, 3
PCI 4 / MediaBus
Connectors
1) PS/2 Keyboard
2) PS/2 Mouse
3) Parallel Port
4) Serial Port
5) ATX Power Input
6) Primary/Second IDE
7) Floppy Drive
8) IDE_LED
9) Power LED (CON1)
10) Key Lock (CON1)
11) SMI Switch (CON1)
12) ATX Power (CON1)
13) Reset Switch (CON1)
14) Speaker (CON1)
15) FAN
16) IR CON
ASUS P/I-XP55T2P4 User’s Manual
5
III. INSTALLATION
Installation Steps
Before using your computer, you must complete the following steps:
1.
2.
3.
4.
5.
6.
Set Jumpers on the Motherboard
Install DRAM and SRAM Modules
Install the Central Processing Unit (CPU)
Install Expansion Cards
Connect Ribbon Cables, Cabinet Wires, and Power Supply
Setup the BIOS Software
1. Jumpers
III. INSTALLATION
(Jumpers)
Several hardware settings are made through the use of jumper caps to connect jumper
pins (JP) on the motherboard. See "Map of the Motherboard" on page 4 for locations of jumpers. The jumper settings will be described numerically such as [----],
[1-2], [2-3] for no connection, connect pins 1&2, and connect pins 2&3 respecPin 1
tively. Pin 1 for our motherboards is always on top
Pin 1
or on the left
when
holding the motherboard with the keyboard connector away from yourself. A "1" is
written besides pin 1 on jumpers with three pins. The jumpers will also be shown
graphically such as
to connect pins 1&2 and
to connect pins 2&3.
Jumpers with two pins will be shown as
for short (On) and
for open (Off).
For manufacturing simplicity, the jumpers may be sharing pins from other groups.
Use the diagrams in this manual instead of following the pin layout on the board.
Settings with two jumper numbers require that both jumpers be moved together. To
connect the pins, simply place a plastic jumper cap over the two pins as diagramed.
WARNING: Computer motheboards and components contain very delicate
Integrated Circuit (IC) chips. To protect the motherboard and other components against damage from static electricity, you should follow some precautions whenever you work on your computer.
1. Unplug your computer when working on the inside.
2. Hold components by the edges and try not to touch the IC chips, leads, or
circuitry.
3. Use a grounded wrist strap before handling computer components.
4. Place components on a grounded antistatic pad or on the bag that came with
the component whenever the components are separated from the
system.
6
ASUS P/I-XP55T2P4 User’s Manual
III. INSTALLATION
Jumper Settings
1. Total Level 2 Cache Size Setting (JP14)
This jumper sets the total amount of L2 cache that is present. If you have both
onboard cache chips (see "Map of Motherboard" for locations) and a Cache
Expansion Slot, then you have 256KB. If you only have onboard cache chips,
then you have 512KB. An "ASUS" or "COAST" cache module can be used to
upgrade the 256KB version to 512KB. If there is no onboard cache, you may
install a cache module of either 256KB or 512KB. IMPORTANT: See page
14 "SRAM Cache" for installation procedures. Regardless of your cache
combination, set the following jumpers according to the total amount of L2
cache that is present onboard and installed as a module.
JP14
[1-2]
[2-3]
JP14
JP14
III. INSTALLATION
(Jumpers)
Cache Size
256KB
512KB
1
2
3
256KB
1
2
3
512KB
Total L2 Cache Size Setting (256KB / 512KB)
2. Flash ROM Boot Block Programming (JP18)
This sets the operation mode of the boot block area of the BIOS Flash ROM to
allow programming in the Enabled position.
Programming
Disabled
Enabled
JP18
[1-2] (Default)
[2-3]
1 2 3
1 2 3
JP18
JP18
Disabled (Default)
Enabled
Boot Block Programming (Disable / Enable)
ASUS P/I-XP55T2P4 User’s Manual
7
III. INSTALLATION
3. Memory Cacheable Size (JP15)
The default of 64MB uses only the onboard TAG SRAM which allows cacheable
memory up to 64MB. If you install DRAM above 64MB and wish to allow
cacheable memory above 64MB, you need to install a TAG SRAM upgrade or
use a cache module with an extended TAG SRAM (such as 256KB ASUS CM1
Rev 3.0 with 2 TAG SRAM's) but not both and set this jumper to 512MB. See
page 12 for TAG SRAM upgrade and page 14 for cache module information.
WARNING: If there are DRAM cache chips (MCache) either onboard or on
the SIMM cache module instead of pipelined burst SRAM chips, this jumper
must be set to 64MB. 512MB will make the system unstable. Mcache chips
can only allow cacheable memory up to 64MB. See "Map of Motherboard" on
page 4 for L2 cache locations. If the cache module that you install already
have an extended tag, do not install another TAG SRAM into the TAG SRAM
Upgrade Socket.
JP15
[1-2] (Default)
[2-3]
JP15
JP15
III. INSTALLATION
(Jumpers)
Cacheable Size
64MB (BSRAM/MCache)
512MB (BSRAM Only)
1
2
3
64MB Cacheable (Default)
Burst SRAM or MCache
1
2
3
512MB Cacheable
Burst SRAM Only
Memory Cacheable Size (64MB/512MB)
4. Onboard Multi-I/O Selection (JP16)
You can selectively disable each onboard Multi-I/O item (floppy, serial, parallel, and IrDA) through BIOS (see pages 35 & 36) or disable all Multi-I/O items
at once with the following jumper in order to use your own Multi-I/O card.
Selections
Enable
Disable
JP16
[1-2] (Default)
[2-3]
JP16
JP16
1
2
3
Enable (Default)
1
2
3
Disabled
Multi I/O Setting (Enable / Disable)
8
ASUS P/I-XP55T2P4 User’s Manual
III. INSTALLATION
5. CMOS RAM (JP17)
This clears the user-entered information stored in the CMOS RAM of the Real
Time Clock such as hard disk information and passwords. To clear the CMOS
data: (1) Turn off the PC, (2) Set jumper to "Clear," (3) Power on the PC, (4) Turn
off the PC, (5) Set jumper to "Operation," (6) Power on the PC, (7) Hold down
<Delete> during bootup and enter BIOS setup to re-enter user information.
Selections
JP17
Operation
[1-2] (Default)
Clear CMOS Data [2-3] (momentarily)
1 2 3
JP17
Operation (Default)
Clear CMOS Data
III. INSTALLATION
(Jumpers)
1 2 3
JP17
CMOS RAM (Operation / Clear CMOS Data)
6. Battery Test Jumper (JP19)
The CMOS RAM is powered by the onboard button cell battery. You can test
the battery’s current by removing this jumper and attaching a current meter to
each pin. WARNING: You must unplug the power cord to your power
supply to ensure that there is no power to your motherboard. The CMOS
RAM containing BIOS setup information will be cleared by this action.
You must enter BIOS to “Load Setup Defaults” and re-enter any user information after removing and reapplying this jumper.
JP19
JP19
Operation
Test Mode
Battery Test Jumper
ASUS P/I-XP55T2P4 User’s Manual
9
III. INSTALLATION
7. CPU External Clock (BUS) Frequency Selection (JP9, JP10)
These jumpers tells the clock generator what frequency to send to the CPU to allow
the selection of the CPU’s External frequency (or BUS Clock). The BUS Clock
times the BUS Ratio equals the CPU's Internal frequency (the advertised CPU speed).
8. CPU to BUS Frequency Ratio (JP12, JP13)
These jumpers set the frequency ratio between the Internal frequency of the CPU
and the External frequency (called the BUS Clock) within the CPU. These must
be set together with the above jumpers CPU External (BUS) Frequency Selection.
JP9
JP10
JP9
JP10
JP9
JP10
JP9
JP10
1
1
1
1
2
2
2
2
3
3
3
3
50MHz
66MHz
60MHz
55MHz
CPU External Clock (BUS) Frequency Selection
1
2
3
JP12
JP13
JP12
JP13
JP12
JP13
JP12
JP13
III. INSTALLATION
(Jumpers)
1
2
3
1
2
3
1
2
3
1.5 x
2.0 x
2.5 x
3.0 x
CPU : BUS Frequency Ratio (1.5x, 2.0x, 2.5x, 3.0x)
Set the jumpers by the Internal speed of the Intel, AMD, or Cyrix CPU’s as follows:
CPU Model
Intel Pentium
Intel Pentium
Intel Pentium
Intel Pentium
Intel Pentium
Intel Pentium
Intel Pentium
Intel Pentium
AMD
AMD
AMD
Freq.
200MHz
166MHz
150MHz
133MHz
120MHz
100MHz
90MHz
75MHz
100MHz
90MHz
75MHz
Ratio
3.0x
2.5x
2.5x
2.0x
2.0x
1.5x
1.5x
1.5x
1.5x
1.5x
1.5x
(BUS Freq.)
66MHz
66MHz
60MHz
66MHz
60MHz
66MHz
60MHz
50MHz
66MHz
60MHz
50MHz
(BUS Freq.)
JP10 JP9
[2-3] [1-2]
[2-3] [1-2]
[1-2] [2-3]
[2-3] [1-2]
[1-2] [2-3]
[2-3] [1-2]
[1-2] [2-3]
[2-3] [2-3]
[2-3] [1-2]
[1-2] [2-3]
[2-3] [2-3]
(Freq. Ratio)
JP13 JP12
[2-3] [1-2]
[2-3] [2-3]
[2-3] [2-3]
[1-2] [2-3]
[1-2] [2-3]
[1-2] [1-2]
[1-2] [1-2]
[1-2] [1-2]
[1-2] [1-2]
[1-2] [1-2]
[1-2] [1-2]
*Cyrix 166+
133MHz
2.0x
66MHz
[2-3] [1-2]
[1-2] [2-3]
*The only Cyrix CPU that is supported on this motherboard is labeled Cyrix 6x86
P166+ but must be Revision 2.7 and later. Look on the underside of the CPU for the
serial number. The number should read G8DC6620A or larger.
10
ASUS P/I-XP55T2P4 User’s Manual
III. INSTALLATION
9-10. Single/Dual Power Plane CPU Voltage Regulator Selections
The following jumpers set the voltage supplied to the CPU. Determine whether
your CPU has a Single Power Plane or Dual Power Planes and then the voltage that it uses. When a single power plane CPU is installed, the dual power
plane selections will be automatically disabled. When a dual power plane CPU
is installed, the single power plane selections will be automatically disabled.
You may have one jumper on the Single Power Plane and another on the Dual
Power Planes at the same time.
Single Power Plane
STD 3.3V-3.465V
VRE 3.4V-3.6V
III. INSTALLATION
(Jumpers)
9. Single Power Plane CPU Voltage Regulator Selection (JP1)
These jumpers set the voltage supplied to single power plane CPU's. For example most CPU’s only have a single power plane and use the standard voltage
setting but currently Cyrix 6x86 166+ Rev 2.7, AMD K586-100, and Intel Pentium
166&200 CPU’s use the VRE setting. WARNING: You can damage your
CPU if you are not exactly clear on CPU jumper settings, check with your
retailer before using your system.
JP1
[1-2] (Default)
[2-3]
JP1
JP1
1
2
3
1
2
3
STD 3.3V - 3.465V (Default)
VRE 3.4-3.6V
Voltage Regulator Output Selection (STD / VRE)
10. Dual Power Plane CPU Voltage Regulator Selection
These jumpers set the voltage supplied to dual power plane CPU's.
WARNING: Position [9-10] is reserved for future use, do not use this setting or you may cause damage to your CPU.
Dual Power Planes
[9-10]
[7-8]
Reserved 2.9V
[5-6]
2.8V
[3-4]
2.7V
[1-2]
2.5V
2.5V
2.7V
2.8V
2.9V
Res.
2.8 Volt Default
CPU Vcore Voltage Selection
ASUS P/I-XP55T2P4 User’s Manual
11
III. INSTALLATION
2. System Memory (DRAM & SRAM)
This motherboard supports four 72-pin SIMMs of 4MB, 8MB, 16MB, 32MB, or
64MB to form a memory size between 8MB to 256MB. The DRAM can be either
60ns or 70ns Fast Page Mode (Asymmetric or Symmetric) or EDO. To support
ECC, you must use true (opposed to phantom parity generated by logic chips) 36-bit
parity-type DRAM (e.g. 8 chips + 4 parity chips) in pairs for all modules. Mixing
32-bit non-parity DRAM (e.g. 8 chips) and 36-bit DRAM (e.g. 12 chips) will work
minus the ECC feature.
Install memory in any or all of the banks in any combination as follows:
III. INSTALLATION
(Memory)
Bank
Bank 0
SIMM Slots 1&2
Memory Module
4MB, 8MB, 16MB, 32MB, 64MB
72-pin FPM or EDO SIMM
Total Memory
Bank 1
SIMM Slots 3&4
4MB, 8MB, 16MB, 32MB , 64MB
72-pin FPM or EDO SIMM
x2
Total System Memory
=
x2
IMPORTANT: Memory setup is required in BIOS Chipset Setup "Auto Configuration."
IMPORTANT: Each bank must have the same size memory installed in pairs.
Do not use memory modules with more than 24 chips per module. Modules
with more than 24 chips exceed the design specifications of the memory subsystem and will cause unreliable operation.
TAG SRAM Upgrade:
The purpose of this SRAM is described on page 9. You must use a standard 5Volt
SRAM chip that is 15ns or faster. See the illustration below for installation location
and orientation.
Indention
SRAM Chip Side
Insert one 16K8 or 32K8
SRAM chip as shown by
the Top view with the semicircle "Indention" on the
same side as the "Notch."
SRAM Chip Top
Notch
TAG SRAM Upgrade Socket
WARNING: If the cache module that you install already have an extended tag, do
not install another TAG SRAM into the TAG SRAM Upgrade Socket.
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ASUS P/I-XP55T2P4 User’s Manual
III. INSTALLATION
DRAM Memory Installation Procedures:
1. The SIMM memory modules will only fit in one orientation as shown because
of a "Plastic Safety Tab" on one end of the SIMM sockets which requires the
"Notched End" of the SIMM memory modules.
1 2 3 4
Notched End
Bank 1
III. INSTALLATION
(DRAM Memory)
Bank 0
72 Pin SIMM DRAM Sockets & Module
2. Press the memory module firmly into place starting from a 45 degree angle
making sure that all the contacts are aligned with the sockets.
3. With your finger tips, rock the memory module into a vertical position so that
it clicks into place.
72 Pin DRAM in SIMM Socket
Metal Clip
Plastic Safety Tab (This Side Only)
Mounting Hole
4. The plastic guides should go through the two "Mounting Holes" on the sides
and the "Metal Clips" should snap on the other side.
5. To release the memory module, squeeze both "Metal Clips" outwards and rock
the module out of the "Metal Clips".
ASUS P/I-XP55T2P4 User’s Manual
13
III. INSTALLATION
Static RAM (SRAM) for Level 2 (External) Cache
The motherboard you purchase may have either 0KB, 256KB, or 512KB onboard.
If you have both onboard cache chips (see "Map of Motherboard" for locations) and
a Cache Expansion Slot, then you have 256KB. If you only have onboard cache
chips, then you have 512KB. An "ASUS" or "COAST" cache module can be used
to upgrade the 256KB version to 512KB. If there is no onboard cache, you may
install a cache module of either 256KB or 512KB.
IMPORTANT: You must set jumper 1 "Total Level 2 Cache Size Setting" on
page 8 when changes are made to your cache size.
III. INSTALLATION
(SRAM Cache)
42 Pins
38 Pins
Pipelined Burst Cache Module
Insert the module as shown. Because the number of pins are different on either side
of the break, the module will only fit in the orientation as shown.
Compatible Cache Modules for this Motherboard
SIMM Cache Module
ASUS CM1 Rev 1.0
ASUS CM1 Rev 1.3
ASUS CM4 Rev 1.5
ASUS CM1 Rev 1.6
ASUS CM1 Rev 3.0*
COAST 1.1
COAST 1.2
COAST 1.3
COAST 2.0
COAST 2.1
COAST 3.0
COAST 3.1
256KB Onboard
---------Yes
Yes
---------Yes
Yes
Yes
Yes
0KB Onboard
------------Yes
---------Yes
Yes
Yes
Yes
*NOTE: ASUS CMI Rev 3.0 has two TAG SRAM's to comply with COAST 3.0
specifications. This extra TAG SRAM will not conflict with the onboard TAG SRAM.
14
ASUS P/I-XP55T2P4 User’s Manual
III. INSTALLATION
3. Central Processing Unit (CPU)
The motherboard provides a 321-pin ZIF Socket 7 that is backwards compatible
with ZIF Socket 5 processors. The CPU that came with the motherboard should
have a fan attached to it to prevent overheating. If this is not the case then purchase
a fan before you turn on your system. Apply thermal jelly to the CPU top and then
install the fan onto the CPU.
WARNING: Without a fan, the CPU can overheat and cause damage to both
the CPU and the motherboard. (See page 24 "CPU Cooling Fan Connector).
III. INSTALLATION
(CPU)
To install a CPU, first turn off your system and remove its cover. Locate the ZIF
socket and open it by first pulling the lever sideways away from the socket then
upwards to a 90-degree right angle. Insert the CPU with the correct orientation as
shown. Use the notched corner of the CPU with the white dot as your guide. The
white dot should point towards the end the of the lever. Notice that there is a blank
area where one hole is missing from that corner of the square array of pin holes and
a "1" printed on the motherboard next to that corner. Because the CPU has a corner
pin for three of the four corners, the CPU will only fit in the one orientation as
shown. The picture is for reference only; you should have a CPU fan that will cover
the face of the CPU. With the added weight of the CPU fan, no force is required to
insert the CPU. Once completely inserted, hold down on the fan and close the
socket's lever.
IMPORTANT: You must set jumpers for "CPU External Clock (BUS) Frequency Selection" and jumpers for "CPU to BUS Frequency Selection" on page
10 depending on the CPU that you install.
Lever Lock
Blank
1
ZIF Socket 7 with
Pentium Processor
ASUS P/I-XP55T2P4 User’s Manual
1
White Dot
15
III. INSTALLATION
4. Expansion Cards
WARNING: Make sure that you unplug your power supply when adding or
removing expansion cards or other system components. Failure to do so may
cause severe damage to both your motherboard and expansion cards. ATX
power supplies may power on if certain motherboard components or connections are touched by metallic objects.
First read your expansion card documentation on any hardware and software settings that may be required to setup your specific card.
NOTE: PCI Slot 4 has a MediaBus extension 2.0 (see page 18) which allows the
installation of a PCI card or a MediaBus card (optional multifunctional card) but not
both.
III. INSTALLATION
(Expansion Cards)
Expansion Card Installation Procedure:
1.
2.
3.
4.
5.
6.
7.
8.
9.
Read the documentation for your expansion card.
Set any necessary jumpers on your expansion card.
Remove your computer system's cover.
Remove the bracket on the slot you intend to use. Keep the bracket for possible future use.
Carefully align the card’s connectors and press firmly.
Secure the card on the slot with the screw you removed in step 4.
Replace the computer system's cover.
Setup the BIOS if necessary (such as "IRQ xx Used By ISA: Yes" in PNP AND
PCI SETUP)
Install the necessary software drivers for your expansion card.
Assigning IRQs for Expansion Cards
Some expansion cards need to use an IRQ to operate. Generally an IRQ must be
exclusively assigned to one use. In an standard design there are 16 IRQs available
but most of them are already in use by parts of the system which leaves 6 free for
expansion cards.
Both ISA and PCI expansion cards may need to use IRQs. System IRQs are available to cards installed in the ISA expansion bus first, and any remaining IRQs are
then used by PCI cards. Currently, there are two types of ISA
16
ASUS P/I-XP55T2P4 User’s Manual
III. INSTALLATION
cards. The original ISA expansion card design, now referred to as “Legacy” ISA
cards, requires that you configure the card’s jumpers manually and then install it in
any available slot on the ISA bus. You may use Microsoft's Diagnostic (MSD.EXE)
utility included in the Windows directory to see a map of your used and free IRQs.
For Windows 95 users, the "Control Panel" icon in "My Computer," contains a "System" icon which gives you a "Device Manager" tab. Double clicking on a specific
device give you "Resources" tab which shows the Interrupt number and address.
Make sure that no two devices use the same IRQs or your computer will experience
problems when those two devices are in use at the same time.
To simplify this process this motherboard has complied with the Plug and Play (PNP)
specification which was developed to allow automatic system configuration whenever a PNP-compliant card is added to the system. For PNP cards, IRQs are assigned automatically from those available.
III. INSTALLATION
(DMA Channels)
If the system has both Legacy and PNP ISA cards installed, IRQs are assigned to
PNP cards from those not used by Legacy cards. The PCI and PNP configuration of
the BIOS setup utility can be used to indicate which IRQs are being used by Legacy
cards. For older Legacy cards that does not work with the BIOS, you can contact
your vendor for an ISA Configuration Utility.
An IRQ number is automatically assigned to PCI expansion cards after those used
by Legacy and PNP ISA cards. In the PCI bus design, the BIOS automatically
assigns an IRQ to a PCI slot that has a card in it that requires an IRQ. To install a
PCI card, you need to set something called the INT (interrupt) assignment. Since all
the PCI slots on this motherboard use an INTA #, be sure that the jumpers on your
PCI cards are set to INT A.
Assigning DMA Channels for ISA Cards
Some ISA cards, both Legacy and PNP may also need to use a DMA (Direct Memory
Access) channel. DMA assignments for this motherboard are handled the same way
as the IRQ assignment process described above. You can select a DMA channel in
the PCI and PNP configuration section of the BIOS Setup utility.
IMPORTANT: In the BIOS setup page 40, you should choose "Yes" for those
IRQ's and DMA's you wish to reserve for Legacy (Non PnP) ISA cards, otherwise conflicts may occur.
ASUS P/I-XP55T2P4 User’s Manual
17
III. INSTALLATION
ASUS MediaBus Card
ASUS MediaBus allows a cost-efficient solution to a complete multimedia system.
The advantages of using one add-on card is to reduce the slot requirements and
compatibility problems in order to maximize the Plug and Play advantages. The
add-on card inserts into the shared PCI 4 / MediaBus 2.0 Slot.
NOTE: This motherboard uses MediaBus Rev. 2.0. The previous MediaBus
cards designed for MediaBus Rev. 1.2 will not fit into the MediaBus Rev 2.0
that is on this motherboard.
III. INSTALLATION
(MediaBus Card)
The difference between Rev. 1.2 and Rev. 2.0 is that the later revision has 72 pins
instead of 68 so it does not have to use any PCI slot signals reserved for PCI cards,
therefore the motherboard's PCI Slot 4 can meet standard specifications. The gap
between the MediaBus extension and the PCI Slot 4 has been increased from 0.32"
to 0.40" in order to prevent Rev. 1.2 MediaBus cards from being installed into the
new motherboards and vice versa.
The following are MediaBus cards designed for MediaBus 2.0 that can be used on
this motherboard:
•
•
•
•
•
PCI-AS2940UW
PCI-AV264CT-N
PCI-AV264VT
PCI-AV264GT
PCI-AV264GT/Plus
Ultra Fast/Wide SCSI & Audio MediaBus Card
PCI Audio & Video MediaBus Card
PCI Audio & Video MediaBus Card
PCI Audio & Video MediaBus Card
PCI Audio & Video MediaBus Card
The following are MediaBus cards designed for MediaBus 1.2 and therefore
cannot be used on this motherboard:
• PCI-AS7870
• PCI-AV264CT
• PCI-AV868
Fast/Wide SCSI & Audio MediaBus Card
PCI Audio & Video MediaBus Card
PCI Audio & Video MediaBus Card
* All the above Audio features Creative Technology, Ltd.
* All the above Video features ATI, Inc. (AV868 Video features S3, Inc.)
* All the above SCSI features Adaptec, Inc.
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ASUS P/I-XP55T2P4 User’s Manual
III. INSTALLATION
5. External Connectors
WARNING: Some pins are used for connectors or power sources. These are
clearly separated from jumpers in "Map of the Motherboard" on page 4. Placing jumper caps over these will cause damage to your motherboard.
IMPORTANT: Ribbon cables should always be connected with the red stripe
on the Pin 1 side of the connector. The four corners of the connectors are labeled on the motherboard. Pin 1 is the side closest to the power connector on
hard drives and floppy drives. IDE ribbon cable must be less than 18in. (46cm),
with the second drive connector no more than 6in. (15cm) from the first connector.
III. INSTALLATION
(Connectors)
1. PS/2 Keyboard Connector (6-pin female)
This connection is for a standard keyboard using an PS/2 plug (mini DIN).
This connector will not allow standard AT size (large DIN) keyboard plugs.
You may use a DIN to mini DIN adapter on standard AT keyboards.
PS/2 Keyboard Connector (6-Pin Female)
2. PS/2 Mouse Connector (6-pin female)
The system will direct IRQ12 to the PS/2 mouse if one is detected. If not
detected, expansion cards can use IRQ12. See PS/2 Mouse Control in BIOS
FEATURES SETUP.
PS/2 Mouse Connector (6-Pin Female)
3. Parallel Printer Connector (25 female)
You can enable the parallel port and choose the IRQ through BIOS Setup on
page 37 "Onboard Parallel Port."
Parallel Printer Connector (25-Pin Female)
4. Serial port COM1 and COM2 Connectors (Two 9-pin male)
The two serial ports can be used for pointing devices or other serial devices.
See page 36 for BIOS configuration of "Onboard Serial Port"
COM 1 (9-Pin Male)
COM 2 (9-Pin Male)
ASUS P/I-XP55T2P4 User’s Manual
19
III. INSTALLATION
5. ATX Power Supply Connector (20-pin block)
This connector connects to a ATX power supply. The plug from the power
supply will only insert in one orientation because of the different hole sizes.
Find the proper orientation and push down firmly making sure that the pins are
aligned.
12.0V
5VSB
PW-0K
GND
5.0V
GND
5.0V
GND
3.3V
3.3V
5.0V
5.0V
-5.0V
GND
GND
GND
PS-ON
GND
-12.0V
3.3V
IMPORTANT: Make sure that the ATX power supply can take at least
10mAmp load on the 5Volt standby lead (5VSB). You may experience
difficulty in powering on your system without this.
III. INSTALLATION
(Connectors)
ATX Power Connector
on Motherboard
20
ASUS P/I-XP55T2P4 User’s Manual
III. INSTALLATION
6. Primary / Secondary IDE connectors (Two 40-pin Block)
This connector supports the provided IDE hard disk ribbon cable. After connecting the single end to the board, connect the two plugs at the other end to
your hard disk(s). If you install two hard disks, you must configure the second
drive to Slave mode by setting its jumpers accordingly. Please refer to the
documentation of your hard disk for the jumper settings. You may also configure two hard disks to be both Masters using one ribbon cable on the primary
IDE connector and another ribbon cable on the secondary IDE connector. Pin
20 is removed to prevent inserting in the wrong orientation when using
ribbon cables with pin 20 plugged).
Secondary IDE Connector
III. INSTALLATION
(Connectors)
Pin 1
Primary IDE Connector
7. Floppy Drive Connector (34-pin block )
This connector supports the provided floppy drive ribbon cable. After connecting the single end to the board, connect the two plugs on the other end to
the floppy drives. (Pin 5 is removed to prevent inserting in the wrong orientation when using ribbon cables with pin 5 plugged).
Floppy Drive Connector
Pin 1
ASUS P/I-XP55T2P4 User’s Manual
21
III. INSTALLATION
8. IDE Activity LED (IDE_LED)
This connector connects to the hard disk activity indicator light on the case.
+
IDE_LED
IDE Activity LED
9. System Power LED (CON1)
This 2-pin connector lights the system power LED when the motherboard has
power. Works the same as the next System Power LED. See the figure on the
next page.
III. INSTALLATION
(Connectors)
10. Keyboard Lock Switch Lead & System Power LED (CON1)
This 5-pin connector connects to the case-mounted key switch for locking the
keyboard and also the system power LED. The system power LED lights
when the motherboard has power. See the figure on the next page.
11. SMI Suspend Switch Lead (CON1)
This allows the user to manually place the system into a suspend mode or
"Green" mode where system activity will be instantly decreased to save electricity and expand the life of certain components when the system is not in use.
This 2-pin connector (See the figure on the next page) connects to the casemounted suspend switch. If you do not have a switch for the connector, you
may use the "Turbo Switch" since it does not have a function. SMI is activated
when it detects a short to open moment and therefore leaving it shorted will
not cause any problems. May require one or two pushes depending on the
position of the switch. Wake-up can be controlled by settings in the BIOS but
the keyboard will always allow wake-up (the SMI lead cannot wake-up the
system). If you want to use this connector, "Suspend Switch" in the POWER
MANAGEMENT SETUP of the BIOS software should be on the default setting of Enable.
22
ASUS P/I-XP55T2P4 User’s Manual
III. INSTALLATION
12. ATX Power Switch (CON1) (ATX Power Supply Only)
The system power is controlled by a momentary switch connected to this lead.
Pushing the button once will turn on the system and pushing another time will
turn off the system. The system power LED shows the status of the system's
power. This connection does not have a function when a standard power supply is used. See the figure below.
13. Reset Switch Lead (CON1)
This 2-pin connector connects to the case-mounted reset switch for rebooting
your computer without having to turn off your power switch This is a preferred method of rebooting in order to prolong the life of the system's power
supply. See the figure below.
Power LED
SMI Lead
ATX Power
Switch
Reset SW
GND
+5V
NC
GND
LOCK
GND
GND
+5V
GND
SPKR
+5V
GND
III. INSTALLATION
(Connectors)
14. Speaker Connector (CON1)
This 4-pin connector connects to the case-mounted speaker.
System
Power LED
Keyboard Lock
Speaker
Connector
System Case Connections
ASUS P/I-XP55T2P4 User’s Manual
23
III. INSTALLATION
15. CPU Cooling Fan Connector (FAN)
This connector supports a CPU cooling fan of 500mAMP (6WATT) or less.
Orientate the fan so that the heat sink fins allow airflow to go across the onboard heat sink(s) instead of the expansion slots. Depending on the fan manufacturer, the wiring and plug may be different. The red wire should be positive, while the black should be ground. Connect the fan's plug to the board
taking into consideration the polarity of the this connector.
WARNING: The CPU and/or motherboard will overheat if there is no airflow
across the CPU and onboard heatsinks. Damage may occur to the motherboard and/or the CPU fan if these pins are incorrectly used. These are not
jumpers, do not place jumper caps over these pins.
Air Flow
III. INSTALLATION
(Connectors)
+12V
GND
+12Volt Power
Connector for
CPU Cooling Fan
Air Flow
16. IrDA-Compliant Infrared Module Connector (IR CON)
This connector supports the optional wireless transmitting and receiving infrared module. This module mounts to a small opening on system cases that
support this feature. You must also configure the setting through BIOS setup
on page 37 UART2 Use Infrared to select whether UART2 is directed for use
with COM2 or IrDA. Use the five pins (as defined by Intel) as shown on the
Back View and connect a ribbon cable from the module to the motherboard
according to the pin definitions.
Front View
NC
GND
Infrared Module Connector
24
Back View
+5V
IRRX
IRTX
ASUS P/I-XP55T2P4 User’s Manual
+5V
NC
IRTX
GND
IRRX
III. INSTALLATION
Power Connection Procedures
III. INSTALLATION
(Power Connections)
1. After all jumpers and connections are made, close the system case cover.
2. Make sure that all switches are in the off position as marked by .
3. Connect the power supply cord into the power supply located on the back of
your system case as instructed by your system user's manual.
4. Connect the power cord into an power outlet that is equipped by a surge protector.
5. You may then turn on your devices in the following order:
a. Your monitor
b. External SCSI devices (starting with the last device on the chain)
c. Your system power. For ATX power supplies, you need to switch
on the power supply as well as press the ATX power switch on the
front of the case.
6. For ATX power supplies, the system LED will light when the ATX power switch
is pressed. The monitor LED may light up after the system's if it complies with
"Green" standards or if it has a power standby feature. The system will then run
power-on tests. While the tests are running, additional messages will appear on
the screen. If you do not see anything within 30 seconds from the time you turn
on the power, the system may have failed a power-on test. Recheck your jumper
settings and connections or call your retailer for assistance.
7. During power-on, hold down the <Delete> key to enter BIOS setup. Follow
the next section "BIOS SOFTWARE" for instructions.
* Powering Off your computer: You must first exit or shut down your operating system before switching off the power switch. For ATX power supplies,
you can press the ATX power switch after exiting or shutting down your operating system. For Windows 95 users, you can select shut down the computer
from the "Start" button and the system will give three quick beeps after about
30 seconds and power off after windows shut down. NOTE: The message:
"It's now safe to turn off your computer" will not be shown in Windows 95
when using shut down with ATX power supplies.
ASUS P/I-XP55T2P4 User's Manual
25
IV. BIOS SOFTWARE
Support Software
FILELIST.TXT - View this file to see the files included in the support software.
PFLASH.EXE - This is the Flash Memory Writer utility that updates the BIOS by
uploading a new BIOS file to the programmable flash ROM chip on the motherboard. To determine the BIOS version, check the last four numbers of the code
displayed on the upper left-hand corner of your screen during bootup. Larger numbers represent a newer BIOS file.
NOTE: A binary BIOS file is no longer included with the support software.
Save the motherboard's BIOS file to a floppy diskette as soon as your system is
operational. See "Flash Memory Writer Utility" in this section to “Save
Current BIOS to File.”
Flash Memory Writer Utility
ASUSTeK PNP BIOS
FLASH MEMORY WRITER V1.5
Copyright (C) 1995, ASUSTeK COMPUTER Inc.
Flash Type -- SST 29EE010
Current BIOS Revision: #401A0-xxxx
Choose one of the following:
IV. BIOS
(Flash Memory Writer)
1. Save Current BIOS To File
2. Update BIOS Main Block From File
3. Advanced Features
Enter Choice: [1]
Press ESC To Exit
xxxx denotes the current BIOS version stored in the Flash EPROM
IMPORTANT: Flash Type may also be "INTEL 28F001BXT." If "unknown"
is shown after "Flash type --," then this ROM chip is not programmable or not
supported with the PnP BIOS and therefore cannot be programmed by the
Flash Memory Writer.
Main Menu
1. Save Current BIOS to File (Perform as soon as system is operational)
This option allows you to copy the contents of the Flash memory chip onto a diskette. This gives you a backup copy of the original motherboard BIOS in case you
need to re-install it.
Create a bootable system floppy diskette by typing [FORMAT A:/S] from the
DOS environment without creating "AUTOEXEC.BAT" and "CONFIG.SYS"
files, then save the PFLASH.EXE and the BIOS to the floppy diskette.
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ASUS P/I-XP55T2P4 User's Manual
IV. BIOS SOFTWARE
2. Update BIOS Main Block from File
This option updates the BIOS from a file on the disk. This can either be a new file
or a backup file created by the “Save Current BIOS to File” option. This will not
update the Boot Block if the Boot Block is different. You will be prompted with the
following if advanced features if necessary.
Boot Block of New BIOS is different from old one !!!
Please Use 'Advanced Feature' to flash whole bios !!!
3. Advanced Features
Selecting this option brings up the Advanced Features screen for clearing the PnP
configuration record and updating the motherboard BIOS.
Advanced Features Menu
Advanced Features
Flash Type -- SST 29EE010
Current BIOS Revision: #401A0-xxxx
Choose one of the following:
1. Clear PNP ESCD Parameter Block
IV. BIOS
(Flash Memory Writer)
2. Update BIOS Including Boot Block and ESCD
Enter Choice: [2]
Press ESC To Exit
xxxx denotes the current BIOS version stored in the Flash EPROM
1. Clear PNP ESCD Parameter Block
This option erases the Plug-and-Play (PnP) configuration record.
2. Update BIOS Including Boot Block and ESCD
This option updates the Boot Block, the motherboard BIOS and the PnP ESCD
Parameter Block from a new BIOS file.
NOTE: "Update BIOS Main Block from File" and "Update BIOS Including Boot
Block and ESCD" requires that the system is running in real mode. This utility will
not operate if the system is under protected mode or virtual mode. You should boot
from a system floppy diskette without "AUTOEXEC.BAT" and "CONFIG.SYS" files.
ASUS P/I-XP55T2P4 User's Manual
27
IV. BIOS SOFTWARE
Updating your Motherboard's BIOS
1. Download an updated BIOS file from Bulletin Board Services (BBS) or the
internet (WWW) and save to the diskette you created in step 1 of the Main
Menu. See ASUS CONTACT INFORMATION on page II.
2. Turn off your computer and open the system cabinet to Enable "Boot Block
Programming" jumper as shown in section III.
2. Boot from the floppy diskette you created in step 1 of the main menu.
3. At the "A:\" prompt, type: PFLASH <Enter>
4. Enter "2" from the Main Menu or "2" from the Advanced Features Menu.
5. The program displays a second screen prompting you for the name of the BIOS
file. Type in the complete name of the file, including the file name extension,
and then press the <Enter> key. The utility then uploads the BIOS file from
disk. The following message will appear:
DO NOT TURN OFF THE SYSTEM IF THERE IS A PROBLEM!
IV. BIOS
(Flash Memory Writer)
If you encounter problems while downloading the new BIOS, DO NOT turn off
your system since this might prevent your system from
booting up. Just repeat the process, and if the problem still persists, upload the
original BIOS file you saved to disk in step 1 of the Main Menu.
WARNING: If the Flash Memory Writer utility was not able to successfully
download a complete BIOS file, your system may not be able to boot up. If
this happens, your system will require service from your vendor.
6. After successfully downloading the new BIOS file, exit the Flash Memory Writer
utility and then turn off your system. Set the jumper back to its default setting
of Programming “Disabled.”
7. Turn on your computer and hold down <delete> to enter BIOS setup. You must
select "Setup Default" to affect the new BIOS, then you may set other items
from the Main Menu.
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IV. BIOS SOFTWARE
6. BIOS Setup
The motherboard supports two programmable Flash ROM chips: 5 Volt and 12
Volt. Either of these memory chips can be updated when BIOS upgrades are released. Use the Flash Memory Writer utility to download the new BIOS file into the
ROM chip as described in detail in this section.
All computer motherboards provide a Setup utility program for specifying the system configuration and settings. If your motherboard came in a computer system, the
proper configuration entries may have already been made. If so, invoke the Setup
utility, as described later, and take note of the configuration settings for future reference; in particular, the hard disk specifications.
If you are installing the motherboard, reconfiguring your system or you receive a
Run Setup message, you will need to enter new setup information. This section
describes how to configure your system using this utility.
IV. BIOS
(BIOS Setup)
The BIOS ROM of the system stores the Setup utility. When you turn on the computer, the system provides you with the opportunity to run this program. This appears during the Power-On Self Test (POST). Press the <Delete> key to call up the
Setup utility. If you are a little bit late pressing the mentioned key(s), POST will
continue with its test routines, thus preventing you from calling up Setup. If you
still need to call Setup, reset the system by simultaneously pressing the <Ctrl>, <Alt>
and <Delete> keys, or by pushing the Reset button on the system case. You can also
restart by turning the system off and then back on again. But do so only if the first
two methods fail.
When you invoke Setup, the CMOS SETUP UTILITY main program screen will
appear with the following options:
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IV. BIOS SOFTWARE
Load Defaults
The “Load BIOS Defaults” option loads the minimized settings for troubleshooting.
“Load Setup Defaults”, on the other hand, is for loading optimized defaults for
regular use. Choosing defaults at this level, will modify all applicable settings.
A section at the bottom of the above screen displays the control keys for this screen.
Take note of these keys and their respective uses. Another section just below the
control keys section displays information on the currently highlighted item in the list.
Standard CMOS Setup
This “Standard CMOS Setup” option allows you to record some basic system hardware configuration and set the system clock and error handling. If the motherboard
is already installed in a working system, you will not need to select this option
anymore. However, if the configuration stored in the CMOS memory on the board
gets lost or damaged, or if you change your system hardware configuration, you will
need to respecify the configuration values. The configuration values usually get lost
or corrupted when the power of the onboard CMOS battery weakens.
IV. BIOS
(Standard CMOS)
The above screen provides you with a list of options. At the bottom of this screen
are the control keys for use on this screen. Take note of these keys and their respective uses.
User-configurable fields appear in a different color. If you need information on the
selected field, press the <F1> key. The help menu will then appear to provide you
with the information you need. The memory display at the lower right-hand side of
the screen is read-only and automatically adjusts accordingly.
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IV. BIOS SOFTWARE
Details of Standard CMOS Setup:
Date
To set the date, highlight the “Date” field and then press the page up/page down or
+/- keys to set the current date. Follow the month, day and year format. Valid
values for month, day and year are:
Month:
Day:
Year:
1 to 12
1 to 31
up to 2099
Time
To set the time, highlight the “Time” field and then press the page up/page down or
+/- keys to set the current time. Follow the hour, minute and second format. Valid
values for hour, minute and second are:
Hour:
Minute:
Second:
00 to 23
00 to 59
00 to 59
time, just press the <Enter> key twice if you do not want to modify the current
You can bypass the date and time prompts by creating an AUTOEXEC.BAT file.
For information on how to create this file, please refer to the MS-DOS manual.
IV. BIOS
(Standard CMOS)
Hard Disk Drives
This field records the specifications for all non-SCSI hard disk drives installed in
your system. The onboard PCI IDE connectors provide Primary and Secondary
channels for connecting up to four IDE hard disks or other IDE devices. Each channel can support up to two hard disks; the first of which is the “master” and the
second is the “slave”.
Specifications for SCSI hard disks need not to be entered here since they operate
using device drivers and are not supported by any the BIOS. If you install the
optional PCI-SC200 SCSI controller card into the motherboard (see section VI for
instructions). If you install other vendor’s SCSI controller card, please refer to their
respective documentations on how to install the required SCSI drivers.
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IV. BIOS SOFTWARE
For IDE hard disk drive setup, you can:
• Use the Auto setting for detection during bootup.
• Use the IDE HDD AUTO DETECTION in the main menu to automatically
enter the drive specifications.
• Enter the specifications yourself manually by using the “User” option.
The entries for specifying the hard disk type include CYLS (number of cylinders),
HEAD (number of read/write heads), PRECOMP (write precompensation), LANDZ
(landing zone), SECTOR (number of sectors) and MODE. The SIZE field automatically adjusts according to the configuration you specify. The documentation
that comes with your hard disk should provide you with the information regarding
the drive specifications.
The MODE entry is for IDE hard disks only, and can be ignored for MFM and ESDI
drives. This entry provides three options: Normal, Large, LBA, or Auto (see below). Set MODE to the Normal for IDE hard disk drives smaller than 528MB; set
it to LBA for drives over 528MB that support Logical Block Addressing (LBA) to
allow larger IDE hard disks; set it to Large for drives over 528MB that do not support LBA. Large type of drive can only be used with MS-DOS and is very uncommon. Most IDE drives over 528MB support the LBA mode.
IV. BIOS
(Standard CMOS)
Auto detection of hard disks on bootup
For each field: Primary Master, Primary Slave, Secondary Master, and Secondary
Slave, you can select Auto under the TYPE and MODE fields. This will enable auto
detection of your IDE drives during bootup. This will allow you to change your
hard drives (with the power off) and then power on without having to reconfigure
your hard drive type. If you use older hard drives which do not support this feature,
then you must configure the hard drive in the standard method as described above
by the "User" option.
NOTE: After the IDE hard disk drive information has been entered into BIOS, new
IDE hard disk drives must be partitioned (such as with FDISK) and then formatted
before data can be read from and write on. Primary IDE hard disk drives must have
its partition set to active (also possible with FDISK).
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IV. BIOS SOFTWARE
Drive A, Drive B
These fields record the types of floppy disk drives installed in your system. The
available options for drives A and B are:
360KB, 5.25 in.
1.2MB, 5.25 in.
720KB, 3.5 in.
1.44MB, 3.5 in.
2.88MB, 3.5 in.
None
To enter the configuration value for a particular drive, highlight its corresponding
field and then select the drive type using the left- or right-arrow key.
Floppy 3 Mode Support
This is the Japanese standard floppy drive. The standard stores 1.2MB in a 3.5"
diskette. This is normally disabled but you may choose from either:
Drive A
Drive B
Both
Disabled (Default)
IV. BIOS
(Standard CMOS)
Video
Set this field to the type of video display card installed in your system. The options
are:
EGA/VGA (Default)
Mono (for Hercules or MDA)
CGA 40
CGA 80
If you are using a VGA or any higher resolution card, choose the “EGA/VGA”
option.
Halt On
This field determines which types of errors will cause the system to halt.
All Errors (Default)
No Errors
All, But Keyboard
All, But Diskette
All, But Disk/Key
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IV. BIOS SOFTWARE
BIOS Features Setup
This “BIOS Features Setup” option consists of configuration entries that allow you
to improve your system performance, or let you set up some system features according to your preference. Some entries here are required by the motherboard’s design
to remain in their default settings.
IV. BIOS
(BIOS Features)
A section at the lower right of the screen displays the control keys you can use. Take
note of these keys and their respective uses. If you need information on a particular
entry, highlight it and then press the <F1> key. A pop-up help menu will appear to
provide you with the information you need. To load the last set values, press the
<F5> key. <F6> and <F7> load the BIOS default values and Setup default values,
respectively.
Details of BIOS Features Setup:
Virus Warning
This field protects the boot sector and partition table of your hard disk against accidental modifications. Any attempt to write to them will cause the system to halt and
display a warning message. If this occurs, you can either allow the operation to
continue or use a bootable virus-free floppy disk to reboot and investigate your
system. The default setting is “Disabled”. This setting is recommended because
conflicts with new operating systems. Installation of new operating systems require
that you disable this to prevent write errors.
CPU Internal Cache
These fields allow you to Enable (default) or Disable the CPU’s “Level 1” primary
cache. Caching allows better performance.
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IV. BIOS SOFTWARE
External Cache
These fields allow you to Enable (default) or Disable the CPU’s “Level 2” secondary cache. Caching allows better performance.
Quick Power On Self Test
This field speeds up the Power-On Self Test (POST) routine by skipping retesting a
second, third, and forth time. Setup default setting for this field is Enabled. A
complete test of the system is done on each test.
HDD Sequence SCSI/IDE First (New Feature!)
When using both SCSI and IDE hard disk drives, IDE is always the boot disk using
drive letter C (default setting of IDE). This new feature allows a SCSI hard disk
drive to be the boot disk when set to SCSI. This allows multiple operating systems
to be used on both IDE and SCSI drives or the primary operating system to boot
using a SCSI hard disk drive.
Boot Sequence
This field determines where the system looks first for an operating system. Options
are C,CDROM,A; CDROM,C,A; A,C; C,A The setup default setting is to check first
the hard disk and then the floppy drive; that is, C, A.
IV. BIOS
(BIOS Features)
Swap Floppy Drive
When enabled, the BIOS swaps floppy drive assignments so that Drive A becomes
Drive B, and Drive B becomes Drive A under DOS. By setup default, this field is set
to Disabled.
Boot Up Floppy Seek
When enabled, the BIOS will seek the floppy "A" drive one time. By setup default,
this field is set to Disabled.
Floppy Disk Access Control
This allows protection of files from the computer system to be copied to floppy
drives by allowing the setting of Read Only to only allow reads from the floppy but
not writes. The setup default R/W allows both reads and writes.
Boot Up NumLock Status
This field enables users to activate the Number Lock function upon system boot.
The setup default setting for this field is On.
Boot Up System Speed
This has not function and should be left at the setup default of High.
IDE HDD Block Mode Sectors
This field enhances hard disk performance by making multi-sector transfers instead
of one sector per transfer. Most IDE drives, except older versions, can utilize this
feature. By setup default, this field is set to HDD MAX, other selections are Disabled 2, 4, 8, 16, and 32.
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IV. BIOS SOFTWARE
Typematic Rate Setting
When enabled, you can set the two typematic controls listed next. Setup default
setting is Disabled.
Typematic Rate (Chars/Sec)
This field controls the speed at which the system registers repeated keystrokes.
Options range from 6 to 30 characters per second. Setup default setting is 6; other
settings are 8, 10, 12, 15, 20, 24, and 30.
Typematic Delay (Msec)
This field sets the time interval for displaying the first and second characters. Four
delay rate options are available: 250ms, 500ms, 750ms and 1000ms. Setup default
value is 250ms.
Security Option
This field determines when the system prompts for the password. The default setting is System, where the system prompts for the User Password every time you
boot up. The other option is Setup, where the system always boots up, and prompts
for the Supervisor Password only when the Setup utility is called up. You can specify
a password by using the Supervisor Password or User Password option from the
main screen as explained later in this section.
IV. BIOS
(BIOS Features)
PS/2 Mouse Function Control
The default of Auto allows the system to detect a PS/2 Mouse on bootup. If detected, IRQ12 will be used for the PS/2 Mouse. IRQ12 will be reserved for expansion cards if a PS/2 Mouse is not detected. Disabled will reserve IRQ12 for expansion cards and therefore the PS/2 Mouse will not function.
PCI/VGA Palette Snoop
Some display cards that are nonstandard VGA such as graphics accelerators or MPEG
Video Cards may not show colors properly. The setting Enabled should correct this
problem. Otherwise leave this on the setup default setting of Disabled.
OS/2 Onboard Memory > 64M
When using OS/2 operating systems with installed DRAM of greater than 64MB,
you need to Enable this option otherwise leave this on the setup default of Disabled.
......................................................................................................................................
Video BIOS Shadow
This field allows you to change the video BIOS location from ROM to RAM. Relocating to RAM enhances system performance, as information access is faster than
the ROM. Setup default setting is Enabled.
C8000-CBFFF to DC000-DFFFF
These fields are used for shadowing other expansion card ROMs. If you install
other expansion cards with ROMs on them, you will need to know which addresses
the ROMs use to shadow them specifically. Shadowing a ROM reduces the memory
available between 640KB and 1024KB by the amount used for this purpose. Leave
on default setting of Disabled.
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IV. BIOS SOFTWARE
Chipset Features Setup
(BIOS Features)
This “Chipset Features Setup” option controls the configuration of the board’s chipset.
Control keys for this screen are the same as for the previous screen.
Auto Configuration
The default setting of 60ns DRAM sets the optimal timings for items 2 through 9 for
60ns DRAM modules. If you are using 70ns DRAM modules, you must change this
item to 70ns DRAM. See pages 12-13 for DRAM installation information.
Peer Concurrency (Leave on default setting of Enabled)
IV. BIOS
(Chipset Features)
PCI Streaming (Leave on default setting of Enabled)
Passive Release (Leave on default setting of Enabled)
Chipset Global Features (Leave on default setting of Enabled)
16-bit I/O Recovery Time
Timing for 16-bit ISA cards (Leave on default setting of 1 BUSCLK)
8-bit I/O Recovery Time
Timing for 8-bit ISA cards (Leave on default setting of 1 BUSCLK)
Video BIOS Cacheable
Allows the Video BIOS to be cached to allow faster execution. (Leave on default
setting of Enabled)
Memory Hole at 15M - 16M
Enabling this features reserves 15MB to 16MB memory address space to ISA expansion cards that specifically require this setting. This makes the memory from
15MB and up unavailable to the system. Expansion cards can only access memory
up to 16MB. The default is Disabled.
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IV. BIOS SOFTWARE
[DRAM and ECC]
If all your DRAM modules have parity chips (e.g. 8 chips + 4 parity chips), they are
considered 36bits. This motherboard sums the memory per bank and therefore two
modules will give 72bits and the following will be displayed:
If your DRAM modules do not have parity chips (e.g. 8 chips), they are considered
32bits and the following will be displayed instead:
(Chipset Features)
The default of Disabled for Memory parity SERR# (NMI) will not show memory
errors on your monitor. When using parity DRAM modules, you can select from the
default of Parity or ECC (Error Checking and Correcting) to correct 1 bit memory
errors that may occur in the memory. (See pages 12-13 for more information on
DRAM memory modules.)
......................................................................................................................................
IV. BIOS
(Chipset Features)
Onboard FDC Controller
When enabled, this field allows you to connect your floppy disk drives to the onboard floppy drive connector instead of a separate controller card. If you want to
use a different controller card to connect the floppy drives, set this field to “Disabled”. Default setting is Enabled.
Onboard FDC Swap A: B:
This field reverses the drive letter assignments of your floppy disk drives in the
Swap AB setting, otherwise leave on the default setting of No Swap. This works
separately from the BIOS Features floppy disk swap feature. It is functionally the
same as physically interchanging the connectors of the floppy disk drives.
Onboard Serial Port 1
Settings are 3F8H/IRQ4 (default), 2F8H/IRQ3, 3E8H/IRQ4, 2E8H/IRQ10, and Disabled for the onboard serial connector.
Onboard Serial Port 2
Settings are 3F8H/IRQ4, 2F8H/IRQ3 (default), 3E8H/IRQ4, 2E8H/IRQ10, and Disabled for the onboard serial connector.
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IV. BIOS SOFTWARE
Onboard Parallel Port
This field sets the address of the onboard parallel port connector. You can select
either: 3BCH / IRQ 7, 378H / IRQ 7 (default), 278H / IRQ 5, Disabled. If you install
an I/O card with a parallel port, ensure that there is no conflict in the address assignments. The PC can support up to three parallel ports as long as there are no conflicts
for each port.
Parallel Port Mode
This field allows you to set the operation mode of the parallel port. The setting
Normal, allows normal-speed operation but in one direction only; EPP allows bidirectional parallel port operation at maximum speed; ECP allows the parallel port to
operate in bidirectional mode and at a speed faster than the maximum data transfer
rate; ECP+EPP (default) allows normal speed operation in a two-way mode.
IV. BIOS
(Chipset Features)
ECP DMA Select
This selection is available only if you select ECP or ECP+EPP in the
Parallel Port Mode. Select either DMA Channel 1, 3 (default), or Disable.
IV. BIOS
(Chipset Features)
UART2 Use Infrared
When enabled, this field activates the onboard infrared feature and sets the second
serial UART to support the infrared module connector on the motherboard. If your
system already has a second serial port connected to the onboard COM2 connector,
it will no longer work if you enable the infrared feature. By default, this field is set
to Disabled, which leaves the second serial port UART to support the COM2 serial
port connector. See section III of the baseboard manual for the IrDA-compliant
infrared module connector.
Onboard PCI IDE Enable
You can select to enable the primary IDE channel, secondary IDE channel, both
(default), or disable both channels (for systems with only SCSI drives).
IDE 0 Master/Slave Mode, IDE 1 Master/Slave Mode
Each channel (0 and 1) has both a master and a slave making four IDE devices
possible. Because each IDE device may have a different Mode timing (0, 1, 2, 3, 4),
it is necessary for these to be independent. The default setting of Auto will allow
auto-detection to ensure the optimal performance.
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IV. BIOS SOFTWARE
Power Management Setup
This “Power Management Setup” option allows you to reduce power consumption.
This feature turns off the video display and shuts down the hard disk after a period
of inactivity.
IV. BIOS
(Chipset Features)
Details of Power Management Setup:
IV. BIOS
(Power Management)
Power Management (User Defined)
This field acts as the master control for the power management modes. There are
four options: Max Saving, Min Saving, Disabled, and User Defined. Max Saving
puts the system into power saving mode after a brief period of system inactivity;
Min Saving is almost the same as Max Saving except that this time the system inactivity period is longer; Disabled disables the power saving features; User Defined
allows you to set power saving options according to your preference.
IMPORTANT: Advanced Power Management (APM) should be installed to
keep the system time updated when the computer enters suspend mode activated by the BIOS Power Management. For DOS environments, you need to
add DEVICE=C:\DOS\POWER.EXE in you CONFIG.SYS. For Windows 3.1x
and Windows 95, you need to install Windows including the APM feature. A
battery and power cord icon labeled "Power" will appear in the "Control Panel."
Choose "Advanced" in the Power Management Field.
Video Off Option (Susp, Stby->Off )
This field determines when to activate the video off feature for monitor power management. The settings are Susp, Stby->Off, Suspend->Off, Always on, and All modes->off.
Video Off Method (V/H SYNC + Blank)
This field defines the video off features. Three options are available: V/H SYNC +
Blank, DPMS, and Blank Only. The first option, which is the default setting, blanks
the screen and turns off vertical and horizontal scanning; DPMS (acronym for Display Power Management System) allows the BIOS to control the video display card
if it supports the DPMS feature; Blank Screen only blanks the screen. Use the latter
for monitors that do not support the “Green” (no power management) feature.
Take note that a screen saver software does not work with this feature. While the
monitor is shut off, this software cannot display.
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IV. BIOS SOFTWARE
Suspend Switch
This field enables or disables the SMI connector on the motherboard. This connector connects to the lead from the Suspend switch mounted on the system case. Default setting for this field is Enabled.
Doze Speed, Stdby Speed
These two fields set the CPU speed during each mode. The number indicates what
the normal CPU speed is divided by.
PM Timers
This section controls the time-out settings for the Power Management scheme. The
fields included in this section are “HDD Power Down”, which places the hard disk
into its lowest power consumption mode, and the Doze, Standby and Suspend system inactivation modes.
The system automatically “wakes up” from any power saving mode when there is
system activity such as when a key is pressed from the keyboard, or when there is
activity detected from the enabled IRQ channels.
HDD Power Down shuts down any IDE hard disk drives in the system after a period of inactivity. This time period is user-configurable to 1-15 Mins or Disable.
This feature does not affect SCSI hard drives.
IV. BIOS
(Power Management)
The Doze Mode, Standby Mode, and Suspend Mode fields set the period of time
after which each of these modes activate. At Max Saving, these modes activate
sequentially (in the given order) after one minute; at Min Saving after one hour.
PM Events
This section sets the wake-up call of the system. If activity is detected from any
enabled IRQ channels in the left-hand group, the system wakes up from suspended
mode. You can enable power management for IRQs 3 ~ 15 individually in the list at
the right of the screen. The power management feature will work on the enabled
IRQ channels.
Take note that a Microsoft serial mouse or compatible will use either COM1 (IRQ4)
or COM2 (IRQ3), and a PS/2 mouse will use IRQ12. If you know which IRQ your
mouse is using, you can enable the Wake-up Event for that IRQ here and the system
will wake up when you move the mouse or click its button.
.......................................................................................................................................
Sleep Items (IRQ3-IRQ15)
You can individually Enable or Disable each IRQ to include in the sleep function.
IRQ8 (Real Time Alarm) is usually set to Disable so that any software alarm clock
or event calendar can wake up the system.
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IV. BIOS SOFTWARE
PNP and PCI Setup
This “PNP and PCI Setup” option configures the PCI bus slots. All PCI bus slots on
the system use INTA#, thus all installed PCI cards must be set to this value.
The first four fields on the screen set how IRQ use is determined for each PCI slot.
The default setting for each field is Auto, which uses auto-routing to determine IRQ
use. The other options are manual settings of 14 or 15 for each slot.
IV. BIOS
(Plug & Play / PCI)
PCI Latency Timer
The default setting of “32 PCI Clock” enables maximum PCI performance for this
motherboard.
IRQ xx Used By ISA
These fields indicate whether or not the displayed IRQ for each field is being used
by a Legacy (non-PnP) ISA card. Two options are available: No/ICU and Yes. The
first option, the default value, indicates either that the displayed IRQ is not used or
an ISA Configuration Utility (ICU) is being used to determine if an ISA card is
using that IRQ. If you install a Legacy ISA card that requires a unique IRQ, and you
are not using an ICU, you must set the field for that IRQ to Yes. For example: If you
install a Legacy ISA card that requires IRQ 10, then set IRQ10 Used By ISA to Yes.
......................................................................................................................................
DMA x Used By ISA
These fields indicate whether or not the displayed DMA channel for each field is
being used by a Legacy (non-PnP) ISA card. Available options include: No/ICU
and Yes. The first option, the default setting, indicates either that the displayed
DMA channel is not used or an ICU is being used to determine if an ISA card is
using that channel. If you install a Legacy ISA card that requires a unique DMA
channel, and you are not using an ICU, you must set the field for that channel to Yes.
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IV. BIOS SOFTWARE
ISA MEM Block BASE
This field allows you to set the base address and block size of a Legacy ISA card that
uses any memory segment within the C800H and DFFFH address range. If you
have such a card, and you are not using an ICU to specify its address range, select a
base address from the six available options; the ISA MEM Block SIZE field will
then appear for selecting the block size. If you have more than one Legacy ISA card
in your system that requires to use this address range, you can increase the block
size to either 8K, 16K, 36K, or 64K. If you are using an ICU to accomplish this task,
leave ISA MEM Block BASE to its default setting of No/ICU.
NCR SCSI BIOS
The default uses Auto settings for the onboard NCR SCSI BIOS (see section VI). If
you wish not to use the onboard NCR SCSI BIOS, choose Disabled
IV. BIOS
(Plug & Play / PCI)
(Power Management)
USB Function
This motherboard supports Universal Serial Bus (USB) devices but current operating systems do not. The default is set to Disabled until support disks and USB
devices are available in which time you can set this function to Enabled.
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IV. BIOS SOFTWARE
Load BIOS Defaults
This “Load BIOS Defaults” option allows you to load the troubleshooting default
values permanently stored in the BIOS ROM. These default settings are non-optimal and disable all high performance features. To load these default settings, highlight “Load BIOS Defaults” on the main screen and then press the <Enter> key. The
system displays a confirmation message on the screen. Press the <Y> key and then
the <Enter> key to confirm. Press the <N> key and then the <Enter> key to abort.
This feature does not affect the fields on the Standard CMOS Setup screen.
Load Setup Defaults
This “Load Setup Defaults” option allows you to load the default values to the system configuration fields. These default values are the optimized configuration settings for the system. To load these default values, highlight “Load Setup Defaults”
on the main screen and then press the <Enter> key. The system displays a confirmation message on the screen. Press the <Y> key and then the <Enter> key to confirm.
Press the <N> key and then the <Enter> key to abort. This feature does not affect
the fields on the Standard CMOS Setup screen.
IV. BIOS
(Load Defaults)
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IV. BIOS SOFTWARE
Supervisor Password and User Password
IV. BIOS
(Passwords)
These two options set the system passwords. “Supervisor Password” sets a password that will be used to protect the system and the Setup utility; “User Password”
sets a password that will be used exclusively on the system. By default, the system
comes without any passwords. To specify a password, highlight the type you want
and then press the <Enter> key. A password prompt appears on the screen. Taking
note that the password is case sensitive, and can be up to 8 alphanumeric characters
long, type in your password and then press the <Enter> key. The system confirms
your password by asking you to type it again. After setting a password, the screen
automatically reverts to the main screen.
To implement the password protection, specify in the “Security Option” field of the
BIOS Features Setup screen when the system will prompt for the password. If you
want to disable either password, press the <Enter> key instead of entering a new
password when the “Enter Password” prompt appears. A message confirms the
password has been disabled.
NOTE: If you forget the password, see CMOS RAM in section III for procedures
on clearing the CMOS.
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IV. BIOS SOFTWARE
IDE HDD Auto Detection
This “IDE HDD Auto Detection” option detects the parameters of an IDE hard disk
drive, and automatically enters them into the Standard CMOS Setup screen.
ROM PCI/ISA BIOS (PI55T2P4)
CMOS SETUP UTILITY
AWARD SOFTWARE, INC.
HARD DISKS
TYPE
SIZE
CYLS
HEAD
PRECOMP
LANDZ
SECTOR
MODE
Primary Master :
Select Primary Master Option (N=Skip) : N
OPTIONS
2(Y)
1
3
Note:
SIZE
CYLS
HEAD
849
849
849
823
1647
823
32
16
32
PRECOMP
0
65535
65535
LANDZ
1646
1646
1646
SECTOR
63
63
63
MODE
LBA
NORMAL
LARGE
Some OSes (like SCO-UNIX) must use "NORMAL" for installation
ESC : Skip
Up to four IDE drives can be detected, with parameters for each listed inside the
box. To accept the optimal entries, press the <Y> key or else select from the numbers displayed under the OPTIONS field (2, 1, 3 in this case); to skip to the next
drive, press the <N> key. If you accept the values, the parameters will appear listed
beside the drive letter on the screen. The process then proceeds to the next drive
letter. Pressing the <N> key to skip rather than to accept a set of parameters causes
the program to enter zeros after that drive letter.
IV. BIOS
(Hard Drive Detect)
Remember that if you are using another IDE controller that does not feature Enhanced IDE support for four devices, you can only install two IDE hard disk drives.
Your IDE controller must support the Enhanced IDE features in order to use Drive E
and Drive F. The onboard PCI IDE controller supports Enhanced IDE, with two
connectors for connecting up to four IDE devices. If you want to use another controller that supports four drives, you must disable the onboard IDE controller in the
Chipset Features Setup screen.
When auto-detection is completed, the program automatically enters all entries you
accepted on the field for that drive in the Standard CMOS Setup screen. Skipped
entries are ignored and are not entered in the screen.
If you are auto-detecting a hard disk that supports the LBA mode, three lines will
appear in the parameter box. Choose the line that lists LBA for an LBA drive. Do
not select Large or Normal.
The auto-detection feature can only detect one set of parameters for a particular IDE
hard drive. Some IDE drives can use more than one set. This is not a problem if the
drive is new and there is nothing on it.
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IV. BIOS SOFTWARE
IMPORTANT: If your hard drive was already formatted on an older previous
system, incorrect parameters may be detected. You will need to enter the correct parameters manually or use low-level format if you do not need the data
stored on the hard drive.
If the parameters listed differ from the ones used when the drive was formatted, the
drive will not be readable. If the auto-detected parameters do not match the ones
that should be used for your drive, do not accept them. Press the <N> key to reject
the presented settings and enter the correct ones manually from the Standard CMOS
Setup screen.
Save and Exit Setup
IV. BIOS
(Save & Exit)
IV. BIOS
(Load Setup Defaults)
Select this option to save into the CMOS memory all modifications you specify
during the current session. To save the configuration changes, highlight the “Save
& Exit Setup” option on the main screen and then press the <Enter> key.
Exit Without Saving
Select this option to exit the Setup utility without saving the modifications you specify
during the current session. To exit without saving, highlight the “Exit Without Saving” option on the main screen and then press the <Enter> key.
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ASUS P/I-XP55T2P4 User's Manual
V. DESKTOP MANAGEMENT
Desktop Management Interface (DMI)
Introducing the ASUS DMI Configuration Utility
System Requirements
The motherboard BIOS must support DMI. The following motherboards do not
support DMI:
• P/I-P6RP4
• PCI/E-P54NP4
• PCI/I-P54NP4D
(not supported)
(not supported)
(not supported)
V. DMI
(DMI Introduction)
(Flash Memory Writer)
This motherboard supports DMI within the BIOS level and provides a DMI Configuration Utility to maintain the Management Information Format Database (MIFD).
DMI is able to auto-detect and record information pertinent to a computer’s system
such as the CPU type, CPU speed, and internal/external frequencies, and memory
size. The onboard BIOS will detect as many system information as possible and
store those collected information in a 4KB block in the motherboard’s Flash EPROM
and allow the DMI to retrieve data from this database. Unlike other BIOS software,
the BIOS on this motherboard uses the same technology implemented for Plug and
Play to allow dynamic real-time updating of DMI information versus creating a new
BIOS image file and requiring the user to update the whole BIOS. This DMI Configuration Utility also allows the system integrator or end user to add additional
information into the MIFD such as serial numbers, housing configurations, and vendor information. Those information not detected by the motherboard BIOS and has
to be manually entered through the DMI Configuration Utility and updated into the
MIFD. This DMI Configuration Utility provides the same reliability as PnP updating and will prevent the refreshing failures associated with updating the entire BIOS.
The DMI Configuration Utility (DMICFG.EXE) must be ran in real mode in order
for the program to run, the base memory must be at least 180K. Memory managers
like HIMEM.SYS (required by windows) must not be installed. You can boot up
from a system diskette without AUTOEXEC.BAT and CONFIG.SYS files, “REM”
HIMEM.SYS in the CONFIG.SYS, or press <F5> during bootup to bypass your
AUTOEXEC.BAT and CONFIG.SYS files.
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49
V. DESKTOP MANAGEMENT
Using the ASUS DMI Configuration Utility
Edit DMI (or delete)
Use the ←→ (left-right) cursors to move the top menu items and the ↑↓ (up-down)
cursor to move between the left hand menu items. The bottom of the screen will
show the available keys for each screen. Press enter at the menu item to enter the
right hand screen for editing. “Edit component” appears on top. The reversed color
field is the current cursor position and the blue text are available for editing. The
orange text shows auto-detected information and are not available for editing. The
blue text “Press [ENTER] for detail” contains a second pop-up menu is available,
use the + - (plus-minus) keys to change the settings. Enter to exit and save, ESC to
exit and not save.
V. DMI
(Using DMI Utility)
If the user has made changes, ESC will prompt you to answer Y or N. Enter Y to go
back to the left-hand screen and save, enter N to go back to left-hand screen and not
save. If editing has not been made, ESC will send you back to the left hand menu
without any messages.
Notes:
A heading, *** BIOS Auto Detect *** appears on the right for each menu item on
the left side that has been auto detected by the system BIOS.
A heading, *** User Modified *** will appear on the right for menu items that has
been modified by the user.
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ASUS P/I-XP55T2P4 User's Manual
V. DESKTOP MANAGEMENT
Save MIFD
You can save the MIFD (normally only saved to flash ROM) to a file by entering the
drive and path here. If you want to cancel save, you may press ESC and a message
“Bad File Name” appears here to show it was not saved.
Load MIFD
You can load the disk file to memory by entering a drive and path and file name
here.
V. DMI
(Using DMI Utility)
Load BIOS Defaults
You can load the BIOS defaults from a MIFD file and can clear all user modified
and added data. You must reboot your computer in order for the defaults to be saved
back into the Flash BIOS.
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ASUS P/I-XP55T2P4 User's Manual
VI. ASUS PCI-SC200 SCSI Card
VI. ASUS PCI-SC200
(NCR SCSI BIOS)
NCR SCSI BIOS and Drivers
Aside from the system BIOS, the Flash memory chip on the motherboard also contains the NCR SCSI BIOS. This SCSI BIOS works in conjunction with the optional
ASUS PCI-SC200 SCSI controller card to provide a complete PCI Fast SCSI-2
interface.
All SCSI devices you install to your system require driver software to function. The
NCR SCSI BIOS directly supports SCSI hard disks under the DOS, Windows and
OS/2 environments. It also uses device drivers from the DOS floppy disk included
in the PCI-SC200 controller card package to support hard disks and other SCSI
devices working under DOS, Windows, Windows NT, Novell NetWare and OS/2.
These drivers provide higher performance than the direct BIOS support. To use
these drivers, you must install them into your system and add them to your system
configuration files. Driver support for SCSI devices used with SCO UNIX is also
provided. These drivers are included in the second SCO UNIX floppy disk. Windows 95 support is also available using the device drivers included within the Windows software. The ASUS PCI-SC200 adapter is auto detected as PCI NCRC810
SCSI HOST ADAPTER and uses the NCRC810.MPD driver.
For information about these drivers and their usage, see the Readme files included
in the driver packages. You can print out the contents of these files using any text
editor program.
The next few pages will instruct you on the installation of the ASUS PCI-SC200
Fast SCSI Card.
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53
VI. ASUS PCI-SC200 SCSI Card
VI. ASUS PCI-SC200
(Setup)
The ASUS PCI-SC200 SCSI Interface Card
Your motherboard may have come with an optional SCSI (Small Computer System
Interface) controller card, the PCI-SC200. The card is also available separately. This
card works with the SCSI BIOS on the motherboard. Together, they provide a complete PCI Fast SCSI-2 interface. With the card installed in your system you can
connect SCSI devices installed in your system case to the internal connector on the
card. You also have the additional option of connecting external SCSI devices to the
external SCSI-2 connector on the card.
If you get the ASUS PCI-SC200 later on as an option, you will need to install it
yourself. The setup procedure is explained here.
Setting Up the ASUS PCI-SC200
There are two jumper settings you may need to make on the card to set it up. One
setting assigns the PCI INT interrupt, the other sets the card’s termination.
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ASUS P/I-XP55T2P4 User’s Manual
VI. ASUS PCI-SC200 SCSI Card
VI. ASUS PCI-SC200
(Jumpers)
Setting the INT Assignment
You must use PCI INT A setting in order to properly assign the card's interrupt. On
the ASUS PCI-SC200, you assign the INT by setting jumper JP1 or JP2. The default
setting for the card already is INT A, so you do not need to change the setting to use
the ASUS PCI-SC200 with this motherboard.
JPJP
1 2
JPJP
1 2
1
2
3
JPJP
1 2
1
2
3
JPJP
1 2
1
2
3
INT A (Def) INT B
INT C
1
2
3
INT D
Interrupt Settings (A, B, C, or D)
Terminator Settings
SCSI devices are connected together in a “chain” by cables. Internal devices connect to the ASUS PCI-SC200 with a fifty-pin flat ribbon cable. External devices
connect to the external port with a SCSI-2 cable. If there are more than one internal
or external devices, additional devices are connected with cables to form a “daisy
chain.” The SCSI chain must be “terminated” at both ends, or the devices in the
chain will not work properly.
Many SCSI devices use a set of terminating resistors to terminate the device. The
ASUS PCI-SC200 has “active” termination that you set using jumper JP5. If you
need to terminate the ASUS PCI-SC200, you do it by setting the jumper. The are two
settings, "terminated" and "not terminated," as shown below.
JP
5
JP
5
Terminated (Default)
Not Terminated
Terminator Setting (Terminated / Not Terminated)
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VI. ASUS PCI-SC200 SCSI Card
VI. ASUS PCI-SC200
(SCSI ID Numbers)
Decide whether or not you need to terminate the ASUS PCI-SC200 based on its
position in the SCSI chain. Only the devices at each end of the chain need to be
terminated. If you have only internal or only external devices connected to the
ASUS PCI-SC200, then you must terminate the ASUS PCI-SC200. If you have
both internal and external devices connected, you must not terminate the card. See
the following example which illustrates this concept.
SCSI Device 1
SCSI Device 2
Termination Required
(End Device)
Termination Required
(JP5 Open)
SCSI Device 3
SCSI Device 4
Termination Required
(End Device)
No Termination Required
(JP5 Short)
Termination Required
(End Device)
SCSI Device 2
SCSI Device 1
SCSI ID Numbers
All SCSI devices, including the ASUS PCI-SC200 interface card must have a SCSI
identification number that is not in use by any other SCSI device. There are eight
possible ID numbers, 0 through 7. The ASUS PCI-SC200 has a fixed SCSI ID of 7.
You can connect up to seven SCSI devices to the interface card. You must set a SCSI
ID number for each device. SCSI devices vary in how they set the ID number. Some
use jumpers, others have some kind of selector switch. Refer to the manual for any
device you install for details on how to set its ID number.
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ASUS P/I-XP55T2P4 User’s Manual
VII. ASUS I-A16C Audio Card
NOTE: The ASUS I-A16C 16-bit ISA audio card comes with certain motherboard
packages and is not for sale separately.
ASUS I-A16C Audio Features
Creative Labs ViBRA 16C PnP Audio Chip
Full Duplex Supports
16/8 bit PCM 5KHz to 44.1KHz
Wave Table Upgradeable
Software Includes:
DOS and Window 3.1 Drivers
Windows 95 Driver
Wave Editor
Wave OLE
Quick CD
Mixer Control
Quick Player
VII. ASUS I-A16C
(Features / Precautions)
•
•
•
•
•
Unpacking and Handling Precautions
CAUTION: Keep the ASUS I-A16C stored in its anti-static bag until you are ready
to install it in your system. The ASUS I-A16C is easily damaged by static electricity. Observe the following precautions while unpacking and handling the board:
•
•
•
Before handling the board, discharge static electricity form your body by touching an unpainted area of the system's metal chassis. While installing the board,
ground yourself frequently to discharge any static electricity that may accumulate in your body.
After removing the board form the anti-static bag, place it on a grounded surface with the components facing up.
Check the board for damage. If any socketed component appears loose, press
firmly but carefully to seat the chip in its socket. Otherwise, avoid touching
the components on the board. Always handle the board by the edges.
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57
VII. ASUS I-A16C Audio Card
Layout and Connectors
Panasonic Audio In
PC Speaker In
Volume Control
Mitsumi Audio In
Sony Audio In
Wave Table Upgrade
PC Speaker Out
Speaker Out
Line Out
VII. ASUS I-A16C
(Layout / Connectors)
Line In
Microphone
MIDI/Game
Connectors
The audio input connectors are used when you wish to control software mixer settings (bass, treble, volume, etc.) for audio CD's that are played with your CD-ROM.
If the "Audio Out" from the CD-ROM is not connected to the "Audio In" on the
card, you can only use the direct output located in the front panel of the CD-ROM
and adjust volume level by the knob.
CD-Audio Connector Pin Definitions
Panasonic
Pin Definition
1 Left Signal
2 GND
3 Right Signal
----
Sony
Pin Definition
1 Right Signal
2 GND
3 GND
4 Left Signal
Mitsumi
Pin Definition
1 GND
2 Left Signal
3 GND
4 Right Signal
PC Speaker In
Pin Definition
1 Mono Signal
2 GND
-------
Volume Control:
Pin
1,3,5
2
4
58
Definition
Ground
Volume Up
Volume Down
ASUS P/I-XP55T2P4 User’s Manual
PC Speaker Out
Pin Definition
1 Right Signal
2 GND
3 Left Signal
4 GND