P/I-P6NP5 Motherboard
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. For updated BIOS, drivers, or product release information you may visit
ASUSTeK's home page at: http://www.asus.com.tw/
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 motherboard itself.
Manual revisions are released for each design represented by the digit before the
period and for additions or corrections represented by the digit after the period.
The BIOS version noted below represents the current release during this manual
© Copyright 1996 ASUSTeK Computer Inc. All rights reserved.
Product Name:
Product Revision:
Manual Revision:
BIOS Version:
Release Date:
#401A0-0105 or later
October 1996
P/I-P6NP5 User's Manual
P/I-P6NP5 User's Manual
I. INTRODUCTION ........................................................ 1
How this manual is organized .......................................................... 1
Item Checklist .................................................................................. 1
II. FEATURES ................................................................. 2
Features of This Motherboard .......................................................... 2
Parts of the Motherboard ................................................................. 3
III. INSTALLATION ....................................................... 4
Map of the Motherboard .................................................................. 4
Jumpers ................................................................................. 5
Expansion Slots .................................................................... 5
Connectors ............................................................................ 5
Installation Steps .............................................................................. 6
1. Jumpers ........................................................................................ 6
Jumper Settings .................................................................... 7
2. System Memory (DRAM/SDRAM & SRAM) ........................ 12
DRAM Memory Installation Procedures: .......................... 13
3. Central Processing Unit (CPU) ................................................. 15
4. Expansion Cards ....................................................................... 16
Expansion Card Installation Procedure: ............................. 16
Assigning IRQs for Expansion Cards ................................. 16
Assigning DMA Channels for ISA Cards ........................... 17
ASUS MediaBus Card ........................................................ 18
5. External Connectors .................................................................. 19
Power Connection Procedures ............................................ 25
IV. BIOS SOFTWARE .................................................. 26
6. BIOS Setup ............................................................................... 26
Load Defaults ..................................................................... 27
Standard CMOS Setup ............................................................. 27
Details of Standard CMOS Setup: ...................................... 28
BIOS Features Setup ................................................................ 31
Details of BIOS Features Setup: ......................................... 31
Chipset Features Setup ............................................................. 34
Power Management Setup ........................................................ 37
Details of Power Management Setup: ................................ 37
PNP and PCI Setup .................................................................. 39
Load BIOS Defaults ................................................................. 41
P/I-P6NP5 User's Manual
Load Setup Defaults ................................................................. 41
Supervisor Password and User Password ................................ 42
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 utility ................................................ 49
System Requirements ......................................................... 49
Using the DMI 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)
P/I-P6NP5 User's Manual
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.
P/I-P6NP5 User's Manual
(Manual / Checklist)
How this manual is organized
This manual is divided into the following sections:
Introduction: Manual information and checklist
Information and specifications
Installation: Instructions on setting up the motherboard
BIOS Setup: BIOS software setup information
DMI Utility: BIOS supported Desktop Management Interface
PCI-SC200: Installation of an optional SCSI card
Installation of an optional Audio card
DOS/Win3.1x: Audio Software Manual (with I-A16C bundle)
Windows 95: Audio Software Manual (with I-A16C bundle)
Item Checklist
Please check that your package is complete. If you discover damaged or
missing items, please contact your retailer.
The P/I-P6NP5 motherboard
2 serial port ribbon cables attached to a mounting bracket
1 parallel ribbon cable with mounting bracket
1 IDE ribbon cable
1 floppy ribbon cable
Support software as follows (1 diskette or 1 CD with I-A16C bundle)
• BMIDEOS2.EXE - BUS Master IDE Driver for OS/2 system
- BUS Master IDE Driver for Windows 95 system
• BMIDE_NT.EXE - BUS Master IDE Driver for Windows NT system
• BMREADME.TXT - BUS Master IDE Driver notes
- Desktop Management Interface (DMI) Configurstion Utility
- Text file on the contents of the product support software
- Flash Memory Writer utility to update motherboard BIOS
- Readme file for instructions on use of the support software
• NA6Ixxxx.AWD - Binary file containing a BIOS version
• Audio drivers and utilities (included with I-A16C CD bundle only)
This user's manual (audio sections included with I-A16C bundle)
Optional PS/2 mouse cable with mounting bracket
Optional infrared module
Optional PCI-SC200 Fast-SCSI card
Optional I-A16C Audio Card
P/I-P6NP5 User's Manual
Features of This Motherboard
The P/I-P6NP5 is carefully designed for the demanding PC user who wants
a great many features in a small package. This motherboard:
Easy Installation: Is equipped with BIOS that supports auto
detection of hard drives and Plug and Play to make setup of hard drives
and expansion cards virtually automatic.
Multi-Speed Support: Supports one 150-200MHz Pentium Pro CPU
on a ZIF Socket 8.
Intel Chipset: Features Intel's 440FX PCIset with I/O subsystems.
Error Checking and Correcting (ECC): Using Intel's 440FX PCIset
together with parity DRAM modules can detect multi-bit memory
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.
Internal L2 Cache Support: Supports Intel CPU's built-in 256KB/
512KB (depending on CPU) Level 2 cache so that no external SRAM
chips are needed.
Versatile DRAM Memory Support: Supports four 72-pin SIMMs of
4MB, 8MB, 16MB, 32MB, 64MB to form a memory size between
8MB to 256MB. Supports both Fast Page Mode (FPM), Extended
Data Output (EDO) SIMMs, and Burst Extended Data Output (BEDO).
ISA and PCI Expansion Slots: Provides three 16-bit ISA slots, four
32-bit PCI slots, and one PCI/MediaBus 2.0 which allows the use of
either a standard PCI card or the ASUS MediaBus Card.
ASUS MediaBus Rev 2.0: Features an expansion slot extension shared
with PCI Slot 5 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. 16 bit I/O
fully decoded to meet PC97 standards. 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.
P/I-P6NP5 User's Manual
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 boot-up.
Optional IrDA and PS/2 Mouse Connector: This motherboard
supports an optional infrared port module for wireless interface and a
PS/2 mouse cable set.
(Parts of Board)
Parts of the Motherboard
PS/2 Mouse Support
Flash ROM
4 PCI Slots
MediaBus 2.0
3 ISA Slots
(4) 72-pin
SIMM Sockets
Intel's 440FX
Socket 8
Real Time Clock
Infrared Module
P/I-P6NP5 User's Manual
Map of the Motherboard
ZIF Socket 8
SIMM Slot 4 (Bank 1)
SIMM Slot 3 (Bank 1)
Primary IDE
Secondary IDE
Fan Power
SIMM Slot 2 (Bank 0)
SIMM Slot 1 (Bank 0)
Board Power Input
Case Connections
Floppy Drives
PCI Slot 1
PCI Slot 2
PCI Slot 3
Multi I/O
ROM Program
PCI Slot 4
PCI Slot 5 / MediaBus 2.0
ISA Slot 2
ISA Slot 3
Voltage Regulator
ISA Slot 1
Parallel Printer
(Map of Board)
P/I-P6NP5 User's Manual
BUS Freq.
JP15, 16, 17, 18
JP2, 3
JP4, 5, 6, 7
p. 7
p. 7
p. 8
p. 8
p. 10
p. 10
Multi-I/O Selection (Enable/Disable)
Flash ROM Boot Block Program (Enable/Disable)
CMOS RAM (Operation/Clear CMOS Data)
Voltage Regulator Output Selection
CPU External Clock (BUS) Frequency Selection
CPU:BUS Frequency Ratio
p. 12
p. 15
p. 16
p. 16
p. 18
DRAM Memory Expansion slots
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
SIMM Slots
ZIF Socket 8
ISA Slots 1, 2, 3
PCI Slots 1, 2, 3, 4
PCI 5 / MediaBus
(Map of Board)
Expansion Slots
1) Keyboard
p. 19
2) PS/2 Mouse
p. 19
3) Parallel Port
p. 20
4) Serial Port
p. 20
5) Floppy Drive
p. 21
6) Power Input
p. 21
7) Primary/Second. IDE p. 22
8) Turbo/Power (CON1) p. 22
9) SMI Switch (CON1) p. 22
10) Reset Switch (CON1) p. 23
11) Key Lock (CON1)
p. 23
12) Speaker (CON1)
p. 23
13) JP11
p. 23
14) JP1
p. 24
15) IR
p. 24
Keyboard connector (5-pin Female)
PS/2 Mouse connector (6-pin Block)
Parallel Port connector (26-pin Block)
Serial Port COM1 & COM2 (10-pin Blocks)
Floppy Drive connector (34-pin Block)
Motherboard Power connector (12-pin Block)
Primary/Secondary IDE connectors (40-pin Blocks)
Turbo LED/Power LED (2-pins)
SMI Switch lead (2-pins)
Reset Switch lead (2-pins)
Keyboard Lock Switch lead (5-pins)
Speaker connector (4-pins)
IDE LED activity light
CPU 12V Cooling Fan connector
Infrared Port Module connector
P/I-P6NP5 User's Manual
Installation Steps
Before using your computer, you must follow the six steps as follows:
Set Jumpers on the Motherboard
Install DRAM Modules
Install the Central Processing Unit (CPU)
Install Expansion Cards
Connect Ribbon Cables, Cabinet Wires, and Power Supply
Setup the BIOS Software
1. Jumpers
Several hardware settings are made through the use of jumper caps to connect jumper pins (JP) on the motherboard. See "Map of the Motherboard"
on page 4 for locations of jumpers. The jumper settings will be described
numerically such as [----], [1-2], [2-3] for no connection, connect pins 1&2,
and connect pins 2&3 respectively. Pin 1 for our motherboards is always on
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
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.
Pin 1
Pin 1
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.
P/I-P6NP5 User's Manual
Jumper Settings
1. On-Board Multi-I/O Selection (JP10)
P/I-P6NP5 User's Manual
3. CMOS RAM (JP12)
This clears the user-entered information stored in the CMOS RAM of
the Real Time Clock such as hard disk information and passwords. To
clear the CMOS data: (1) Turn off the PC, (2) Set jumper to "Clear", (3)
Power on the PC, (4) Turn off the PC, (5) Set jumper to "Operation", (6)
Power on the PC, (7) Hold down <Delete> during bootup and enter BIOS
setup to re-enter user preferences.
Clear CMOS
[open] (Default)
[short] (momentarily)
Operation (Default)
Clear Data
CMOS RAM (Operation / Clear CMOS Data)
4. Voltage Regulator Output Selection (JP15, 16, 17, 18)
Pentium Pro Processors may require different voltages. Current
processors (marked "Pentium Pro") support VID and will automatically
adjust the voltage regulator so that no jumper settings are needed (leave
these jumpers open in this case). Older processors without VID support
require manual voltage ID setting. Use [S] for Short and [O] or Open.
JP15 (VID 0)
JP16 (VID 1)
JP17 (VID 2)
JP18 (VID 3)
3.4 3.3 3.2 3.1 3.0 2.9 2.8 2.7 2.6 2.5 2.4 2.3 2.2 2.1
[O] [S] [O] [S] [O] [S] [O] [S] [O] [S] [O] [S] [O] [S]
[S] [O] [O] [S] [S] [O] [O] [S] [S] [O] [O] [S] [S] [O]
[S] [S] [S] [O] [O] [O] [O] [S] [S] [S] [S] [O] [O] [O]
[S] [S] [S] [S] [S] [S] [S] [O] [O] [O] [O] [O] [O] [O]
JP15 (VID 0)
JP16 (VID 1)
JP17 (VID 2)
JP18 (VID 3)
VID Support (Default)
Voltage ID 0, 1, 2, 3 (VID Support or Manual)
P/I-P6NP5 User's Manual
(This page was intentionally left blank)
P/I-P6NP5 User's Manual
5. CPU External (BUS) Frequency Selection (JP2, JP3)
These jumpers tells the clock generator what frequency to send to the
CPU. These allow the selection of the CPU’s External frequency (or
BUS Clock). The BUS Clock times the BUS Ratio equals the CPU's
Internal frequency (the advertised CPU speed).
6. CPU to BUS Frequency Ratio (JP4, 5, 6, 7)
These jumpers set the frequency ratio between the Internal frequency of
the CPU and the External frequency (called the BUS Clock) within the
CPU. These must be set together with the above jumpers CPU External
(BUS) Frequency Selection.
1 2 3
1 2 3
CPU External Clock (BUS) Frequency Selection
5.0 x
2.5 x
3.0 x
3.5 x
4.0 x
2.0 x
CPU : BUS Frequency Ratio (2.0x, 2.5x, 3.0x, 3.5x, 4.0x, 5.0x)
Set the jumpers by the Internal speed of the Intel CPU as follows:
CPU:BUS Ratio:
External Freq.:
66MHz 60MHz 66MHz 60MHz
External Freq.:
CPU:BUS Ratio:
P/I-P6NP5 User's Manual
(This page was intentionally left blank)
P/I-P6NP5 User's Manual
2. System Memory (DRAM/SDRAM & SRAM)
This motherboard supports four 72-pin SIMMs (Single Inline Memory
Modules) of 4MB, 8MB, 16MB, 32MB, 64MB to form a memory size
between 8MB to 256MB. The DRAM can be either 60ns or 70ns Fast Page
Mode (Asymmetric or Symmetric), Extended Data Output (EDO), or Burst
Extended Data Output (BEDO). SIMMs must be installed in pairs so that
each bank contains two of the same size memory modules. To support
ECC, you must use true (opposed to phantom parity generated by TTL chips)
36-bit parity-type SIMM (e.g. 8 chips + 4 parity chips) in pairs for all
modules. Mixing 32-bit non-parity SIMM (e.g. 8 chips) and 36-bit SIMM
(e.g. 12 chips) will work minus the ECC feature.
Install memory in any or all of the banks in any combination as follows:
Bank 0
SIMM Slots 1&2
Memory Module
4MB, 8MB, 16MB, 32MB, 64MB
Total Memory
Bank 1
SIMM Slots 3&4
4MB, 8MB, 16MB, 32MB, 64MB
Total System Memory
IMPORTANT: Each bank must have the same size and type (FPM,
EDO, BEDO) of memory installed in pairs. Memory setup is required
in BIOS Chipset Setup "Auto Configuration" on page 34.
P/I-P6NP5 User's Manual
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
Bank 0
Notched End
Bank 1
72 Pin SIMM DRAM Sockets & Module
2. Press the memory module firmly into place starting from a 45 degree
angle making sure that all the contacts are aligned with the socket.
3. With your finger tips, rock the memory module into a vertical position
so that it clicks into place.
72 Pin DRAM in SIMM Socket
Metal Clip
Plastic Safety Tab (This Side Only)
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".
P/I-P6NP5 User's Manual
(This page was intentionally left blank)
P/I-P6NP5 User's Manual
3. Central Processing Unit (CPU)
The motherboard provides a 387-pin ZIF Socket 8. 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").
To install a CPU, locate the ZIF socket and open it by first pulling the lever
sideways away from the socket's "Lock" then upwards to a 90-degree right
angle. Insert the CPU with the correct orientation as shown. Look to see
that the pins are more dense on one half compared to the other half. 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 the "CPU External Clock (BUS) Frequency
Selection" and "CPU to BUS Frequency Ratio" depending on the CPU
that you install.
CPU ZIF Socket 8 with Pentium Pro
P/I-P6NP5 User's Manual
4. Expansion Cards
First read your expansion card documentation on any hardware and
software settings that may be required to setup your specific card.
NOTE: PCI Slot 5 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.
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.
(Expansion Cards)
Expansion Card Installation Procedure:
Read the documentation for your expansion card.
Set any necessary jumpers on your expansion card.
Remove your computer’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’s cover.
Setup the BIOS if necessary.
Install the necessary software drivers for your expansion card.
Assigning IRQs for Expansion Cards
IMPORTANT: PCI Slots 4 & 5 share the same IRQ. If using PCI
cards on both slots 4 & 5, make sure that the drivers support "Share
IRQ" or that one card does not need an IRQ assignment. Conflicts will
arise on PCI Slots 4 & 5 that will make the system unstable.
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.
P/I-P6NP5 User's Manual
Both ISA and PCI expansion cards may need to use IRQs. System IRQs are
available to cards installed in the ISA expansion bus first, and any
remaining IRQs are then used by PCI cards. Currently, there are two types
of ISA cards. The original ISA expansion card design, now referred to as
“Legacy” ISA cards, requires that you configure the card’s jumpers manually and then install it in any available slot on the ISA bus. You may use
Microsoft's Diagnostic (MSD.EXE) utility included 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.
(DMA Channels)
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.
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
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, you should choose "Yes" for those
IRQ's and DMA's you wish to reserve for Legacy cards.
P/I-P6NP5 User's Manual
ASUS MediaBus Card
MediaBus allows a cost-efficient solution to a complete multimedia
system. The advantages of using one add-on card is to reduce the slot
requirements and compatibility problems in order to maximize the Plug and
Play advantages. The add-on card inserts into the shared PCI 5 / 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.
(MediaBus Card)
The difference between Rev. 1.2 and Rev. 2.0 is that the later revision has
72 pins instead of 68 pins so it does not have to use any PCI slot signals
reserved for PCI cards, therefore the motherboard's PCI Slot 4 can meet
standard specifications. The gap between the MediaBus extension and the
PCI Slot 4 has been increased from 0.32" to 0.40" in order to prevent Rev.
1.2 MediaBus cards from being installed into the new motherboards and
vice versa.
The following are MediaBus cards designed for MediaBus 2.0 that can be
used on this motherboard:
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-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.
P/I-P6NP5 User's Manual
5. External Connectors
IMPORTANT: Ribbon cables should always be connected with the red
stripe on the Pin 1 side of the connector. The four corners of the
connectors are labeled on the motherboard. Pin 1 is the side closest to
the power connector on hard drives and floppy drives. IDE ribbon
cable must be less than 18in. (46cm), with the second drive connector
no more than 6in. (15cm) from the first connector.
1. Keyboard Connector (5-pin female)
This connection is for a standard IBM-compatible keyboard. May also
be known as a 101 enhanced keyboard.
Keyboard Connector (5-pin female)
Connector Plug from Keyboard
P/I-P6NP5 User's Manual
3. Parallel Printer Connector (26 Pin Block)
Connection for the included parallel port ribbon cable with mounting
bracket. Connect the ribbon cable to this connection and mount the
bracket to the case on an open slot. It will then be available for a
parallel printer cable. Note: Serial printers must be connected to the
serial port. You can enable the parallel port and choose the IRQ through
BIOS Setup on page 37 "Onboard Parallel Port." (Pin 26 is removed
to prevent inserting in the wrong orientation when using ribbon
cables with pin 26 plugged).
P/I-P6NP5 User's Manual
5. Floppy drive connector (34-pin block )
This connector supports the provided floppy drive ribbon cable.
After connecting the single end to the board, connect the two plugs
on the other end to the floppy drives. (Pin 5 is removed to prevent
inserting in the wrong orientation when using ribbon cables with
pin 5 plugged).
Pin 1
Floppy Drive Connector
6. Power connector (12-pin block)
This connector connects to a standard 5 Volt power supply. To connect
the leads from the power supply, ensure first that the power supply is
not plugged. Most power supplies provide two plugs (P8 and P9),
each containing six wires, two of which are black. Orient the
connectors so that the black wires are located in the middle.
Using a slight angle, align the plastic guide pins on the lead to their
receptacles on the connector. Once aligned, press the lead onto the
connector until the lead locks into place.
Power Connector
on Motherboard
Power Plugs from
Power Supply
P/I-P6NP5 User's Manual
7. 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).
Pin 1
Primary IDE Connector
Secondary IDE Connector
8. Turbo LED switch (CON1)
The motherboard's turbo function is always on. The turbo LED
connection is labeled here but the LED will remain constantly lit while
the system power is on. You may wish to connect the Power LED
from the system case to this lead. (See the figure on the next page)
9. 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 case-mounted suspend switch. If you do not
have a switch for the connector, you may use the "Turbo Switch" since
it does not have a function. SMI is activated when it detects a short to
open moment and therefore leaving it shorted will not cause any problems. May require one or two pushes depending on the position of the
switch. Wake-up can be controlled by settings in the BIOS but the
keyboard will always allow wake-up (the SMI lead cannot wake-up
the system). If you want to use this connector, "Suspend Switch" in
the POWER MANAGEMENT SETUP of the BIOS software should
be on the default setting of Enable.
P/I-P6NP5 User's Manual
10. 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.
11. Keyboard lock switch lead (CON1)
This 5-pin connector connects to the case-mounted key switch for
locking the keyboard for security purposes. See the figure below.
12. Speaker connector (CON1)
This 4-pin connector connects to the case-mounted speaker.
Reset SW
Power LED &
Turbo or
Power LED
SMI Lead
Keyboard Lock
System Case Connections
13. IDE activity LED (IDE_LED)
This connector connects to the hard disk activity indicator light on the
system cabinet.
P/I-P6NP5 User's Manual
14. 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.
P/I-P6NP5 User's Manual
Power Connection Procedures
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
P/I-P6NP5 User's Manual
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" below.
Flash Memory Writer Utility
Copyright (C) 1995, ASUSTeK COMPUTER Inc.
Flash Type -- SST 29EE010
Current BIOS Revision: #401A0-xxxx
Choose one of the following:
1. Save Current BIOS To File
2. Update BIOS Main Block From File
(Flash Memory Writer)
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 copy PFLASH.EXE to the newly formatted diskette and then save
your BIOS to the same diskette.
P/I-P6NP5 User's Manual
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
(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.
P/I-P6NP5 User's Manual
Updating your Motherboard's BIOS
1. Download an updated BIOS file from a Bulletin Board Service (BBS) or the
internet (WWW) and save to the diskette you created in step 1 of the Main
Menu. Visit ASUS WWW at http://www.asus.com.tw/ or FTP: ftp.asus.com.tw/
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.
You will be prompted with the following if “Advanced Features” is necessary.
Boot Block of New BIOS is different from old one !!!
Please Use 'Advanced Feature' to flash whole bios !!!
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:
(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.
P/I-P6NP5 User's Manual
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.
(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:
P/I-P6NP5 User's Manual
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.
(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.
P/I-P6NP5 User's Manual
Details of Standard CMOS Setup:
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:
1 to 12
1 to 31
up to 2099
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:
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.
(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.
P/I-P6NP5 User's Manual
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.
(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).
NOTE: SETUP Defaults are noted in parenthesis next to each function heading.
P/I-P6NP5 User's Manual
Drive A / Drive B (None)
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 (Disabled)
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, and Disabled
Video (EGA/VGA)
Set this field to the type of video display card installed in your system. The options
are: EGA/VGA, Mono (for Hercules or MDA), CGA 40, and CGA 80
If you are using a VGA or any higher resolution card, choose the “EGA/VGA”
(Standard CMOS)
Halt On (All Errors)
This field determines which types of errors will cause the system to halt. Choose
from : All Errors, No Errors, All, But Keyboard, All, But Diskette, and All, But Disk/
P/I-P6NP5 User's Manual
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.
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. <F5> loads the last set values,
<F6>&<F7> loads the BIOS default values and Setup default values, respectively.
(BIOS Features)
NOTE: SETUP Defaults are noted in parenthesis next to each function heading.
Details of BIOS Features Setup
Virus Warning (Disabled)
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. 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 Level 1 Cache / CPU Level 2 Cache (Enabled)
These fields allow you to choose from the default of Enable or choose Disable to
turn on or off the CPU’s Level 1 and Level 2 built-in cache.
BIOS Update (Enabled)
This functions as an update loader integrated into the BIOS to supply the Pentium
Pro Processor(s) with the required data. The BIOS will load the update on all processors during system bootup in the default position of Enabled.
P/I-P6NP5 User's Manual
CPU Fast String (Enabled)
Leave on default setting of Enabled for best performance.
Deturbo Mode (Disabled)
When Enabled, FLUSH# signal is held asserted to disable caching and the P6 bus
pipeline will be stalled. This allows software to run at a reduced-speed. The default
is set to Disabled to allow maximum processing speed.
Quick Power On Self Test (Enabled)
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 (C,A)
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.
(BIOS Features)
Swap Floppy Drive (Disabled)
When enabled, the BIOS swaps floppy drive assignments so that Drive A becomes
Drive B, and Drive B becomes Drive A under DOS.
Boot Up Floppy Seek (Disabled)
When enabled, the BIOS will seek the floppy "A" drive one time.
Floppy Disk Access Control (R/W)
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 (On)
This field enables users to activate the Number Lock function upon system boot.
Boot Up System Speed (High)
This has no function and should be left on the setup default.
IDE HDD Block Mode Sectors (HDD MAX)
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. Selections are HDD MAX, Disabled 2, 4, 8, 16, and 32.
P/I-P6NP5 User's Manual
Typematic Rate Setting (Disabled)
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) (250ms)
This field sets the time interval for displaying the first and second characters. Four
delay rate options are available: 250ms, 500ms, 750ms and 1000ms.
OS/2 Onboard Memory > 64M (Disabled)
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.
Security Option (System)
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.
(BIOS Features)
PCI/VGA Palette Snoop (Disabled)
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.
Video BIOS Shadow (Enabled)
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.
C8000-CBFFF to DC000-DFFFF (Disabled)
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.
PS/2 Mouse Control (Auto)
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.
P/I-P6NP5 User's Manual
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.
NOTE: SETUP Defaults are noted in parenthesis next to each function heading.
Details of Chipset Features Setup
P/I-P6NP5 User's Manual
(Chipset Features)
Auto Configuration
The default setting of 60ns DRAM sets the optimal timings for items 2 through 6 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.
DRAM Refresh Type
Leave on default setting of RAS Only as this is the current standard.
CPU-to-PCI IDE Posting
Leave on default setting of Enabled so that the CPU to PCI IDE posting cycles are
treated as normal I/O write transactions.
USWC Write Posting
Leave on default setting of Enabled to allow USWC write posting during
I/O bridge access.
CPU-to-PCI Write Post
The default setting of Enabled will increase the efficiency of the PCI bus and speed
up the execution in the processor.
PCI-to-DRAM Pipeline
The default of Enabled will increase the bandwidth of the path between the
PCI and the DRAM to enhance the PCI bus efficiency and DRAM accessing.
PCI Burst Write Combining
The default setting of Enabled will increase the efficiency of PCI bus by combining
several CPU to PCI write cycles into one. VGA performance is increased by this
(Chipset Features)
The default setting of Enabled will increase the execution efficiency of the processor. It allows the processor to execute read commands out of order if there is no
dependence between these read and other write commands.
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 Memory Cache Mode
USWC (uncacheable, speculative write combining) is a new cache technology for
the video memory of the Pentium Pro processor. It can greatly improve the display
speed by caching the display data. You must leave this on the default setting of UC
(uncacheable) if your display card cannot support this feature or else your system
may not boot.
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.
[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:
(Chipset Features)
If your DRAM modules do not have parity chips (e.g. 8 chips), they are considered
32bits and the following will be displayed instead:
The default of Disabled for Data Integrity will not show memory errors on your
monitor. When using parity DRAM modules, you can select ECC (Error Checking
and Correcting) to correct 1 bit memory errors that may occur in the memory, otherwise Parity is the default. (See pages 12-13 for more information on DRAM memory
Onboard FDC Controller (Enabled)
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.
P/I-P6NP5 User's Manual
Onboard FDC Swap A: B: (No Swap)
This field reverses the drive letter assignments of your floppy disk drives. Two
options are available: “No Swap” and “Swap AB.” If you want to switch drive
letter assignments, set this field to “Swap AB”, and the swap will be controlled in
hardware. 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 (3F8H/IRQ4)
Settings are 3F8H/IRQ4, 2F8H/IRQ3, 3E8H/IRQ4, 2E8H/IRQ10, and Disabled for
the onboard serial connector.
Onboard Serial Port 2 (2F8H/IRQ3)
Settings are 3F8H/IRQ4, 2F8H/IRQ3, 3E8H/IRQ4, 2E8H/IRQ10, and Disabled for
the onboard serial connector.
(Chipset Features)
Onboard Parallel Port (378H/IRQ7)
This field sets the address of the onboard parallel port connector. You can select
either: 3BCH / IRQ 7, 378H / IRQ 7, 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.
(Chipset Features)
Parallel Port Mode (ECP+EPP)
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 allows normal speed operation in a two-way mode.
ECP DMA Select (3)
This selection is available only if you select ECP or ECP+EPP in the
Parallel Port Mode. Select either DMA Channel 1, 3, or Disable.
UART2 Use Infrared (Disabled)
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 (both)
You can select to enable the primary IDE channel, secondary IDE channel, both, or
disable both channels (for systems with only SCSI drives).
IDE 0 Master/Slave Mode, IDE 1 Master/Slave Mode (Auto)
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 optimal performance.
P/I-P6NP5 User's Manual
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.
(Chipset Features)
NOTE: SETUP Defaults are noted in parenthesis next to each function heading.
Details of Power Management Setup
(Power Management)
Power Management (User Defined)
This field acts as the master control for the power management modes. 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.x
and Windows 95, you need to install Windows with 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.
P/I-P6NP5 User's Manual
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 (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. NOTE:
Screen saver software does not work with this feature. While the monitor is shut off,
this software cannot display.
Suspend Switch (Enabled)
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.
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.
(Power Management)
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.
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.
P/I-P6NP5 User's Manual
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.
NOTE: SETUP Defaults are noted in parenthesis next to each function heading.
Details of PNP and PCI Setup
(Plug & Play / PCI)
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.
PCI Latency Timer (32 PCI Clock)
"32 PCI Clock" enables maximum PCI performance for this motherboard.
IRQ xx Used By ISA (No/ICU)
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.
P/I-P6NP5 User's Manual
DMA x Used By ISA (No/ICU)
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.
(Power Management)
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.
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
(Plug & Play / PCI)
USB Function (Disabled)
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.
Passive Release (Enabled)
This function allows the passive release to be Enabled or Disabled. The default
setting of Enabled allows better performance.
P/I-P6NP5 User's Manual
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.
(Load Defaults)
P/I-P6NP5 User's Manual
Supervisor Password and User Password
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.
P/I-P6NP5 User's Manual
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.
Primary Master :
Select Primary Master Option (N=Skip) : N
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.
(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.
P/I-P6NP5 User's Manual
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
(Save & Exit)
(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.
P/I-P6NP5 User's Manual
(This page was intentionally left blank)
P/I-P6NP5 User's Manual
Desktop Management Interface (DMI)
Introducing the ASUS DMI Configuration Utility
System Requirements
The DMI Configuration Utility (DMICFG.EXE) must be used 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
P/I-P6NP5 User's Manual
(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.
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.
(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.
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.
P/I-P6NP5 User's Manual
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.
You can load the disk file to memory by entering a drive and path and file name
(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.
P/I-P6NP5 User's Manual
(This page was intentionally left blank)
P/I-P6NP5 User's Manual
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
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.
P/I-P6NP5 User's Manual
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.
P/I-P6NP5 User's Manual
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.
1 2
1 2
1 2
1 2
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.
Terminated (Default)
Not Terminated
Terminator Setting (Terminated / Not Terminated)
P/I-P6NP5 User's Manual
(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.
P/I-P6NP5 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
(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.
P/I-P6NP5 User's Manual
VII. ASUS I-A16C Audio Card
Layout and Connectors
Mitsumi Audio In
Sony Audio In
Panasonic Audio In
PC Speaker In
Volume Control
Wave Table Upgrade
PC Speaker Out
Speaker Out
Line Out
(Layout / Connectors)
Line In
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
Sony Audio Input
Pin Definition
1 Right Signal
4 Left Signal
Mitsumi Audio Input
Pin Definition
2 Left Signal
4 Right Signal
Panasonic Audio Input
Pin Definition
1 Left Signal
3 Right Signal
-- ----
PC Speaker In
Pin Definition
1 Mono Signal
-- ----- ----- ----
PC Speaker Out
Pin Definition
1 Right Signal
3 Left Signal
-- ----
Volume Control
Pin Definition
1 Ground
2 Volume Up
3 Ground
4 Volume Down
5 Ground
P/I-P6NP5 User's Manual