Asus P/I-P6NP5 User manual

P/I-P6NP5 Motherboard
USER'S MANUAL

P/I-P6NP5 User's Manual
II
USER'S NOTICE
Product Name: P/I-P6NP5
Product Revision: 1.3
Manual Revision: 2.1
BIOS Version: #401A0-0105 or later
Release Date: October 1996
No part of this product, including the product and software may be reproduced,
transmitted, transcribed, stored in a retrieval system, or translated into any lan-
guageinanyformbyanymeanswithouttheexpresswrittenpermissionofASUSTeK
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 mer-
chantability or fitness for a particular purpose. In no event shallASUS 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 ifASUS
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
revision.
© Copyright 1996 ASUSTeK Computer Inc. All rights reserved.

P/I-P6NP5 User's Manual III

P/I-P6NP5 User's Manual
IV
CONTENTS
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 V
CONTENTS
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 INTAssignment .....................................................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
VI
FCC & DOC COMPLIANCE
FederalCommunications CommissionStatement
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 installa-
tion. 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 inter-
ference 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: Theuseofshieldedcablesforconnectionofthemonitor to the graphics
card is required to assure compliance with FCC regulations. Changes or modifica-
tions to this unit not expressly approved by the party responsible for compliance
could void the user's authority to operate this equipment.
CanadianDepartment ofCommunications Statement
This digital apparatus does not exceed the Class B limits for
radio noise emissions from digital apparatus set out in the Radio Interference Regu-
lations of the Canadian Department of Communications.

P/I-P6NP5 User's Manual 1
I. INTRODUCTION
I. INTRODUCTION
(Manual / Checklist)
How this manual is organized
This manual is divided into the following sections:
I. Introduction: Manual information and checklist
II. Features: Information and specifications
III. Installation: Instructions on setting up the motherboard
IV. BIOS Setup: BIOS software setup information
V. DMI Utility: BIOS supported Desktop Management Interface
VI. PCI-SC200: Installation of an optional SCSI card
VII. I-A16C: Installation of an optional Audio card
VIII. DOS/Win3.1x: Audio Software Manual (with I-A16C bundle)
IX. 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 -BUSMasterIDEDriverforOS/2system
• BMIDE_95.EXE -BUSMasterIDEDriverforWindows95system
• BMIDE_NT.EXE -BUSMasterIDEDriverforWindowsNTsystem
• BMREADME.TXT -BUSMasterIDEDrivernotes
• DMI.EXE -DesktopManagementInterface(DMI)ConfigurstionUtility
• FILE.LST -Textfileonthecontentsoftheproductsupportsoftware
• PFLASH.EXE -FlashMemoryWriterutilitytoupdatemotherboardBIOS
• README.TXT -Readmefileforinstructionsonuseofthesupportsoftware
• NA6Ixxxx.AWD -BinaryfilecontainingaBIOSversion
• Audiodriversandutilities(includedwithI-A16CCDbundleonly)
√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
2
II. FEATURES
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.
•ErrorCheckingand Correcting(ECC): Using Intel's 440FX PCIset
together with parity DRAM modules can detect multi-bit memory
errors and correct 1-bit memory errors.
•DesktopManagementInterface(DMI): SupportsDMIthroughBIOS
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.
•ASUSMediaBusRev2.0: 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.
(Features)
II. FEATURES

P/I-P6NP5 User's Manual 3
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 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 the Motherboard
II. FEATURES
(Parts of Board)
Intel's 440FX
PCIset
CPU ZIF
Socket 8
PCI 5 orASUS
MediaBus 2.0
4 PCI Slots
Super
Multi-I/O
Programmable
Flash ROM
(4) 72-pin
SIMM Sockets
3ISASlots
Self-Powered
Real Time Clock
Infrared Module
Support
PS/2 Mouse Support

P/I-P6NP5 User's Manual
4
III. INSTALLATION
Map of the Motherboard
(Map of Board)
III. INSTALLATION
ISA Slot 3
ISA Slot 2 ISA Slot 1
PCI Slot 5 / MediaBus 2.0 PCI Slot 3 PCI Slot 2 PCI Slot 1
SIMM Slot 1 (Bank 0) SIMM Slot 2 (Bank 0) SIMM Slot 3 (Bank 1) SIMM Slot 4 (Bank 1)
ZIF Socket 8
Keyboard
Infrared
Case Connections
PCI Slot 4
PS/2
Mouse
JP13 JP10
JP12
JP5
JP7
JP6
JP4
JP2
JP3
JP15
JP16
JP17
JP18
Fan Power
Parallel Printer
COM 1 COM 2
Floppy Drives
Primary IDE
Secondary IDE
P9
Board Power Input
P8
ROM Program Multi I/O
BUS Freq.
JP1
Voltage Regulator
IDE LED
CMOS RAM
CPU:BUS Ratio

P/I-P6NP5 User's Manual 5
III. INSTALLATION
Jumpers
1) JP10 p. 7 Multi-I/O Selection (Enable/Disable)
2) JP13 p. 7 Flash ROM Boot Block Program (Enable/Disable)
3) JP12 p. 8 CMOS RAM (Operation/Clear CMOS Data)
4) JP15, 16, 17, 18 p. 8 Voltage Regulator Output Selection
5) JP2, 3 p. 10 CPU External Clock (BUS) Frequency Selection
6) JP4, 5, 6, 7 p. 10 CPU:BUS Frequency Ratio
Expansion Slots
1) SIMM Slots p. 12 DRAM Memory Expansion slots
2) ZIF Socket 8 p. 15 Socket for Central Processing Unit (CPU)
3) ISA Slots 1, 2, 3 p. 16 16-bit ISA Bus Expansion slots
4) PCI Slots 1, 2, 3, 4 p. 16 32-bit PCI Bus Expansion slots
5) PCI 5 / MediaBus p. 18 32-bit PCI Bus Slot and MediaBus
Connectors
1) Keyboard p. 19 Keyboard connector (5-pin Female)
2) PS/2 Mouse p. 19 PS/2 Mouse connector (6-pin Block)
3) Parallel Port p. 20 Parallel Port connector (26-pin Block)
4) Serial Port p. 20 Serial Port COM1 & COM2 (10-pin Blocks)
5) Floppy Drive p. 21 Floppy Drive connector (34-pin Block)
6) Power Input p. 21 Motherboard Power connector (12-pin Block)
7) Primary/Second. IDE p. 22 Primary/Secondary IDEconnectors (40-pin Blocks)
8) Turbo/Power (CON1) p. 22 Turbo LED/Power LED (2-pins)
9) SMI Switch (CON1) p. 22 SMI Switch lead (2-pins)
10)Reset Switch (CON1) p. 23 Reset Switch lead (2-pins)
11) Key Lock (CON1) p. 23 Keyboard Lock Switch lead (5-pins)
12)Speaker (CON1) p. 23 Speaker connector (4-pins)
13)JP11 p. 23 IDE LED activity light
14)JP1 p. 24 CPU 12V Cooling Fan connector
15)IR p. 24 Infrared Port Module connector
(Map of Board)
III. INSTALLATION

P/I-P6NP5 User's Manual
6
(Jumpers)
III. INSTALLATION
III. INSTALLATION
Installation Steps
Before using your computer, you must follow the six steps as follows:
1. Set Jumpers on the Motherboard
2. Install DRAM Modules
3. Install the Central Processing Unit (CPU)
4. Install Expansion Cards
5. Connect Ribbon Cables, Cabinet Wires, and Power Supply
6. Setup the BIOS Software
1. Jumpers
Several hardware settings are made through the use of jumper caps to con-
nect 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
topPin 1 or on the left Pin 1 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
manufacturingsimplicity,thejumpersmaybesharingpins from other groups.
Use the diagrams in this manual instead of following the pin layout on the
board. Settingswithtwojumpernumbersrequirethatbothjumpersbemoved
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.

P/I-P6NP5 User's Manual 7
III. INSTALLATION
Jumper Settings
1. On-Board Multi-I/O Selection (JP10)

P/I-P6NP5 User's Manual
8
III. INSTALLATION
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)
Poweron the PC, (7) Holddown <Delete> during bootup andenter BIOS
setup to re-enter user preferences.
Selections JP12
Normal [open] (Default)
Clear CMOS [short] (momentarily)
CMOS RAM (Operation / Clear CMOS Data)
Operation (Default) Clear Data
JP12 JP12
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.
Selections 3.5 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
JP15 (VID 0) [S] [O] [S] [O][S] [O] [S] [O] [S] [O] [S] [O] [S] [O] [S]
JP16 (VID 1) [S] [S] [O] [O][S] [S] [O] [O] [S] [S] [O] [O] [S] [S] [O]
JP17 (VID 2) [S] [S] [S] [S] [O] [O][O] [O] [S] [S] [S] [S] [O] [O] [O]
JP18 (VID 3) [S] [S] [S] [S] [S] [S] [S] [S] [O] [O] [O] [O] [O] [O] [O]
Voltage ID 0, 1, 2, 3 (VID Support or Manual)
VID Support (Default)
JP15 (VID 0)
JP16 (VID 1)
JP17 (VID 2)
JP18 (VID 3)
(Jumpers)
III. INSTALLATION

P/I-P6NP5 User's Manual 9
III. INSTALLATION
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III. INSTALLATION
(Jumpers)

P/I-P6NP5 User's Manual
10
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.
CPU : BUS Frequency Ratio (2.0x, 2.5x, 3.0x, 3.5x, 4.0x, 5.0x)
2.0 x 2.5 x 3.0 x 3.5 x 4.0 x
JP5
JP7
JP6
JP4 5.0 x
60MHz
123
CPU External Clock (BUS) Frequency Selection
JP2
JP3 66MHz
123
JP2
JP3
Set the jumpers by the Internal speed of the Intel CPU as follows:
JP 200 180 166 150
External Freq.: JP2 [1-2] [2-3] [1-2] [2-3]
JP3 [2-3] [1-2] [2-3] [1-2]
CPU:BUS Ratio: JP5 [On] [On] [On] [On]
JP7 [On] [On] [Off] [Off]
JP6 [Off] [Off] [On] [On]
JP4 [On] [On] [On] [On]
CPU:BUS Ratio: 3.0x 3.0x 2.5x 2.5x
External Freq.: 66MHz 60MHz 66MHz 60MHz
III. INSTALLATION
(Jumpers)
III. INSTALLATION

P/I-P6NP5 User's Manual 11
III. INSTALLATION
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III. INSTALLATION
(Jumpers)

P/I-P6NP5 User's Manual
12
III. INSTALLATION
(Memory)
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 mustuse true (opposed to phantomparitygeneratedbyTTLchips)
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 Memory Module Total Memory
Bank 0 4MB, 8MB, 16MB, 32MB, 64MB x2
SIMM Slots 1&2 72-pin FPM, EDO, BEDO SIMM
Bank 1 4MB, 8MB, 16MB, 32MB, 64MB x2
SIMM Slots 3&4 72-pin FPM, EDO, BEDO SIMM
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 13
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.
72 Pin SIMM DRAM Sockets & Module
1234
Notched End
Bank 0 Bank 1
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.
Metal Clip
Plastic Safety Tab (This Side Only) Mounting Hole
72 Pin DRAM in SIMM Socket
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
14
III. INSTALLATION
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