AOpen AP5C/P AP5C/P User guide

AP5C/P

User’s Guide

Copyright

Copyright  1995 by this company. All rights reserved. No part of
this publication may be reproduced, transmitted, transcribed, stored in
a retrieval system, or translated into any language or computer
language, in any form or by any means, electronic, mechanical,
magnetic, optical, manual or otherwise, without the prior written
permission of this company.

ii

Disclaimer

This company makes no representations or warranties, either expressed or
implied, with respect to the contents hereof and specifically disclaims any
warranties, merchantability or fitness for any particular purpose. Any
software described in this manual is sold or licensed "as is". Should the
programs prove defective following their purchase, the buyer (and not this
company, its distributor, or its dealer) assumes the entire cost of all necessary
servicing, repair, and any incidental or consequential damages resulting from
any defect in the software. Further, this company reserves the right to revise
this publication and to make changes from time to time in the contents hereof
without obligation to notify any person of such revision or changes.

AMI is a registered trademark of American Megatrends Inc.
Pentium is a registered trademark of Intel Corporation.
PC XT/AT is a registered trademark of International Business Machines Corporation.

Other brand and product names are trademarks and/or registered trademarks of their respective
holders.

iii

FCC Statement

FCC Class B Radio Frequency

Interference Statement

Note:

This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to Part 15 of 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 the
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:

1. Reorient or relocate the receiving antenna.

2. Increase the separation between the equipment and receiver.

3. Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected.

4. Consult the dealer or an experienced radio/television technician for help.

Notice 1:

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

Notice 2:

Shielded interface cables, if any, must be used in order to comply with
emission limits.

iv

About this Manual

Purpose and Scope

This manual tells how to install and configure the system board.

Organization

This manual consists of three chapters and one appendix.
Chapter 1, Features, covers the specifications, layout and components of the system
board.
Chapter 2, Hardware Setup, tells how to set the jumpers, upgrade the CPU and the
system memory, install the system board and add expansion cards.
Chapter 3, AMI BIOS, explains the system BIOS and tells how to configure the
system by setting the BIOS parameters.
Appendix A, Jumper Summary, gives you a tabular summary of the jumper settings
discussed in Chapter 2. It also gives a list of the onboard connectors.

v

About this Manual

Conventions

The following conventions are used in this manual:

Text entered by user,
default settings

message displayed

a, e, s, etc

Represent text input by the user, default
settings and recommended selections

Denotes actual messages that appear on
screen

Represent the actual keys that you have to
press on the keyboard.

NOTE

Gives bits and pieces of additional
information related to the current topic.

WARNING

Alerts you to any damage that might result
from not following directions.

CAUTION

Suggests precautionary measures to avoid
potential hardware or software problems.

IMPORTANT

Reminds you to take specific action
relevant to the accomplishment of the
procedure at hand.

TIP

Tells how to accomplish a procedure
through little shortcuts.

vi

Table of Contents

1 Features

Specifications.............................................................. 1-2

Board Layout............................................................... 1-3

System Board Parts..................................................... 1-4

Microprocessor..........................................1-4

ASICs ........................................................1-4

AMI BIOS...................................................1-4

Expansion Slots.........................................1-5

DRAM Sockets ..........................................1-5

Two-channel PCI Mode 4

Enhanced-IDE Controller...........................1-5

Super I/O Controller...................................1-6

Keyboard Connector..................................1-6

SRAM ........................................................1-6

Power Management...................................1-6

2 Hardware Setup

ESD Precautions ......................................................... 2-1

Installing a Microprocessor......................................... 2-2

Upgrading the Microprocessor.................................... 2-4

Jumper Settings........................................................... 2-5

Selecting the CPU Type ............................2-7

Setting the Cache Size..............................2-8

vii

Table of Contents

Selecting the Flash ROM Type................2-10

Clearing the CMOS..................................2-11

Enabling the PS/2 Mouse (Optional)........2-11

Enabling the Onboard

Super I/O Controller.................................2-12

Selecting the ECP DMA Channel ............2-12

Memory Configuration ............................................. 2-13

Installing a SIMM.....................................2-15

Removing a SIMM ...................................2-16

Cache Module (Optional) ......................................... 2-17

Connectors ................................................................ 2-18

Multifunction Connector...........................2-18

Break Switch............................................2-20

Keyboard Connector................................2-20

Power Connector.....................................2-21

Fan Connectors.......................................2-22

Installation................................................................. 2-23

Installing the System Board.....................2-23

Installing Expansion Boards.....................2-24

viii

Table of Contents

3 AMI BIOS

AMI BIOS Setup Main Menu..................................... 3-1

Standard CMOS Setup................................................ 3-2

Date/Time..................................................3-3

Floppy Drives A and B...............................3-3

Hard Disk Drives........................................3-4

Advanced CMOS Setup.............................................. 3-5

Typematic Rate (Chars./Sec.)....................3-6

System Keyboard ......................................3-7

Primary Display..........................................3-7

PS/2 Mouse Support..................................3-7

Above 1 MB Memory Test .........................3-7

Memory Test Tick Sound...........................3-7

Hit “Del” Message Display........................3-8

Extended BIOS RAM Area ........................3-8

Wait for F1 If Any Error..............................3-8

System Boot-up Num Lock........................3-8

Floppy Drive Seek at Boot.........................3-8

Floppy Drive Swapping..............................3-9

System Boot-up Sequence........................3-9

Password Checking...................................3-9

Cache Memory ..........................................3-9

System BIOS Shadow Cacheable...........3-10

ix

Table of Contents

Adapter ROM Control..............................3-10

IDE Control..............................................3-11

Secondary Drives Present.......................3-13

ISA PnP Function ....................................3-13

Power-on Delay .......................................3-13

Chipset Setup Mode................................3-13

Chipset Features Setup.............................................. 3-14

DRAM Control..........................................3-17

ISA Control ..............................................3-19

PCI Control..............................................3-19

IRQ Allocated...........................................3-21

Power Management Setup ........................................ 3-22

Advanced Power Management................3-23

Full-on to Standby Timeout......................3-23

Standby to Suspend Timeout ..................3-23

IDE Drive Power Down in ........................3-23

Video Power Down in...............................3-23

VGA Power Down Mode..........................3-24

Slow Clock Ratio......................................3-24

Break Event (IRQ 3~7, 9~15) ..................3-24

x

Table of Contents

Peripheral Setup........................................................ 3-25

Programming Mode.................................3-25

Onboard FDC ..........................................3-25

Serial Port 1.............................................3-26

Serial Port 2.............................................3-26

Parallel Port.............................................3-26

Parallel Port Mode...................................3-26

Parallel Port Extended Mode...................3-26

Utility Setup.............................................................. 3-27

IDE Setup ................................................3-27

Color Set..................................................3-28

Default Setup ............................................................ 3-28

Original ....................................................3-28

Optimal ....................................................3-29

Fail-safe...................................................3-29

Security Setup .........................................3-30

Password.................................................3-30

Anti-virus..................................................3-32

Exit Setup.................................................................. 3-33

NCR SCSI BIOS and Drivers................................... 3-34

Appendix A Jumper Summary

xi

Table of Contents

Notice to User

To run Windows NT operating system using the Pentium 75/90/120/150
CPU, you must install the driver that comes with the board. Refer to
README.NT text file for the driver installation procedure.

xii

Chapter

Features 1

The AP5C/P is a Pentium -based system board that utilizes the PCI/ISA
architecture. It has three PCI slots, three ISA-AT slots and one PCI-/ISA­shared slot. The board integrates the Intel 82437FX, 82438FX and 82371FB
application-specific integrated circuit (ASIC) chipsets that enable the System
Management Mode (SMM) function of the Pentium chip. It also includes the
Green power management feature that extends energy conservation from
system components to the display monitor.
The system memory is expandable to 128 MB by adding single in-line
memory modules (SIMMs). The second-level cache is also upgradable to
512 KB and supports the write-back mode. The board may also come with
an onboard cache module slot and a separate cache module that supports the
pipeline-burst cache.
A super I/O controller and a PCI mode 4 enhanced-IDE controller with bus
master support are also incorporated in the design to further enhance system
performance. The board measures 220 mm x 330 mm (full baby-AT size).

User’s Guide 1-1

Features

Specifications

Microprocessor

Memory
SIMM Sockets
ASICs

I/O Chip

Bus Architecture
Expansion Slots

Ports

Secondary Cache
BIOS
RTC
Board Size

Intel Pentium (3.3V) Processor
75/90/100/120/133/150/166/200 MHz
Cyrix 6x86 - P120+

128 MB
Four 72-pin, 32-bit
Intel 82437FX

Intel 82438FX
Intel 82371FB

SMC 37C665GT, SMC MC1665IR or
UMC 8669F

PCI, ISA
Three PCI slots

Three ISA-AT slots
One PCI-/ISA-shared slot

One parallel port (SPP/ECP/EPP)
Two serial ports (UART 16C550)
Two-channel PCI mode 4 enhanced IDE
One floppy-disk connector

256 KB/512 KB
AMI Plug-and-Play WinBIOS
Dallas DS12887A
220 mm x 330 mm (full baby-AT)

1-2 User’s Guide

Features

Board Layout

1. Power connector 15. CPU socket

2. FDC connector 16. System BIOS

3. IDE2 connector 17. Real-time clock/battery

4. IDE1 connector 18. TAG SRAM

5. SIMM sockets 19. ISA slots

6. 82438 ASIC 20. 82371 ASIC

7. Asynchronous cache 21. Keyboard controller

8. Voltage regulator 22. System I/O chip

9. 82437 ASIC 23. PCI slots

10. Pipeline-burst cache slot 24. COM1 connector

11. Multifunction connector 25. Printer connector

12. 4-pin fan connector 26. PS/2 mouse connector (option)

13. 2-pin fan connector 27. AT-keyboard connector

14. Hard disk LED connector 28. COM2 connector

User’s Guide 1-3

Features

System Board Parts

Microprocessor

The AP5C/P system board uses an Intel Pentium (3.3V) Processor running at
75, 90, 100, 120, 133, 150, 166, or 200 MHz. It can also support a Cyrix
6x86 - P120+ running at 100 MHz. Chapter 2 tells how to upgrade the
processor.

ASICs

The ASICs onboard are the 82437FX, 82438FX and 82371FB. The 82437
serves as the system memory controller and PCI bus interface.
The two 82438FX ASICs function as PCI local-bus data paths that offer 64­bit DRAM and 32-bit PCI bus interfaces to support the 64-bit Pentium
processor data bus.
The 82371FB acts as the PCI-/ISA-bus bridge that translates the PCI bus
cycles into ISA bus cycles or vice-versa. It also functions as the PCI fast­IDE interface and the SMM controller.

AMI BIOS

The AMI BIOS (basic input-output system) resides in the flash ROM chip.
This contains the program that performs the power-on self-tests (POST) upon
booting. During POST, this program activates the peripheral devices, tests
onboard memory, and prepares the system for operation. Chapter 3 gives
more information on the AMI BIOS.

Expansion Slots

The board expansion slots consist of three PCI slots, three ISA-AT slots and
one PCI-/ISA-shared slot. These expansion slots are the parallel bars on the
system board. There are rows of golden pins inside each slot that serve as a
clutch to secure the contacts of expansion boards. Chapter 2 tells how to
install expansion boards.

DRAM Sockets

The system board has four 72-pin DRAM sockets that expand system
memory to a maximum of 128 MB. These sockets accept single- and

1-4 User’s Guide

Features

double-density SIMMs. Chapter 2 tells how to install memory modules and
the different memory configurations available.

Two-channel PCI Mode 4 Enhanced-IDE Controller

The board integrates a two-channel PCI mode 4 enhanced-integrated drive
electronics (E-IDE) controller that improves data transfer rate and supports
bus master IDE. It also has E-IDE interfaces that allow the system to support
four E-IDE devices, including hard disks with more than 528-MB capacity.
This feature offers users increased data storage capacity.

Super I/O Controller

The onboard super I/O controller chip supports two UART 16450/16550­compatible serial ports and a parallel port (SPP, EPP, ECP)1. It also
accommodates 1.2-/1.44-/2.88-MB disk drives allowing full-range access to

5.25-inch drives with 360-KB or 1.2-MB format and 3.5-inch drives with

720-KB, 1.44-MB or 2.88-MB format.

Keyboard Connector

The keyboard connector at the rear of the system board allows you to
connect any AT-compatible keyboard. PS/2 keyboard and mouse connectors
are optional.

SRAM

The system board comes either with a 256-KB asynchronous cache
upgradable to 512 KB, or a cache module slot that supports a 256-KB
pipeline-burst cache. See Chapter 2 for instructions on how to upgrade the
cache.

Power Management

The AP5C/P features a system power-management mode that conforms to
the power-saving standards of the U.S. Environmental Protection Agency

1

SPP: Standard Parallel Port

EPP: Enhanced Parallel Port (IEEE 1284 compliant)
ECP: Extended Capabilities Port (IEEE 1284 compliant)

User’s Guide 1-5

Features

(EPA) Energy Star program. See Chapter 3 for more information on the
power-management mode.

1-6 User’s Guide

Chapter

Hardware Setup2

This chapter tells how to set jumpers, upgrade system memory, add
expansion boards, and install the system board.
Install the CPU, memory, and set the jumpers before you install the board
inside a housing. You may add the other components after installing the
board. Read this chapter to learn about the components before you install
them.

ESD Precautions

Electrostatic discharge (ESD) can damage your CPU, disk drives, expansion
boards, and other components. Always observe the following precautions
before you install a system component.

1. Do not remove a component from its protective packaging until you are

ready to install it.

2. Wear a wrist grounding strap and attach it to a metal part of the system

unit before handling components. If a wrist strap is not available,
maintain contact with the system unit throughout any procedure
requiring ESD protection.

User’s Guide 2-1

Hardware Setup

Heatsink

Installing a Microprocessor

The motherboard has a zero-insertion force microprocessor socket that
allows you to install a CPU without using any tools.
Follow these steps to install a CPU in a ZIF-type upgrade socket:

Make sure that the system power is OFF before
installing a component.

1. Attach the heatsink and the fan to the CPU.

CPU in socket

CPU in socket

(with heatsink)

Fan

2-2 User’s Guide

Hardware Setup

2. Pull up the socket lever.

3. Insert the CPU with the attached heatsink and fan. Make sure that pin 1

of the CPU aligns with the hole 1 of the socket. The notched corner on
the CPU indicates pin 1.

4. Pull down the socket lever to lock the CPU into the socket.

Step 2

Step 3

Step 4

5. Plug the fan cable into the fan connector. The board has one 2-pin and

one 4-pin fan connector. See the section Connectors for details on the
fan connectors.

6. Set the jumpers accordingly. See the following sections for the correct

jumper settings.

User’s Guide 2-3

Hardware Setup

Upgrading the Microprocessor

Follow these steps to upgrade the CPU:

1. Turn off the system power and remove the housing cover.

2. Locate the CPU socket on the system board.

3. Pull up the socket lever.

4. Remove the installed CPU.

5. Install the upgrade CPU. Refer to the section Installing a

Microprocessor for instructions on how to install a CPU.

2-4 User’s Guide

Hardware Setup

Jumper Settings

You have to change the jumper settings when you reconfigure the system.
This section tells how to set the jumpers. The figure below shows the jumper
locations.

Optional jumper:

JP4 - for PS/2 mouse function

User’s Guide 2-5

Hardware Setup

Set a jumper switch as follows:

• To close a jumper, insert the plastic jumper cap over two pins of a

jumper.

• To open a jumper, remove the jumper cap.

The following conventions are used to represent the proper jumper settings.

Open

Closed (1-2 position)

2-6 User’s Guide

Hardware Setup

Selecting the CPU Type

The jumpers JP5, JP6 and JP8 let you select the CPU type. The available
settings are as follows:

CPU TYPE JP5 JP6 JP8

P54C-75

P54C-90

P54C-100

P54C -120

P54C -133

P54C -150

P54C -166

P54C - 200

Cyrix 6x86 - P120+

User’s Guide 2-7

Hardware Setup

Setting the Cache Size

The system board may have either a 256-KB asynchronous cache or
pipeline-burst cache. If your board comes with a pipeline-burst cache, see
the section Cache Module for information on pipeline-burst cache module.
A system board with asycnchronous cache allows you to upgrade the second­level cache from 256 KB to 512 KB. The table below lists the possible
cache configurations.

Cache

Size

256 KB 16 Kb x 8 x 1 pc or

512 KB 16 Kb x 8 x 1 pc or

TAG SRAM

32 Kb x 8 x 1 pc

32 Kb x 8 x 1 pc

(U25) Data SRAM

(U27, U28, U29, U30, U34, U35, U36, U37)

32 Kb x 8 x 8 pcs

64 Kb x 8 x 8 pcs

You must reset the 3-pin jumper JP7 when you upgrade the cache. See the
figure below for the correct settings.

CACHE SIZE JP7

256 KB

512 KB

Asynchronous Cache

The board supports both 3.3V and 3.3V/5V Mix Mode asynchronous cache.
However, before upgrading the cache, you need to check the location of the
resistor chips on the board. Normally, the board comes with the resistor
chips located at R260, R261, R262 and R263 enabling you to install

3.3V/5V Mix Mode SRAMs. To upgrade the asynchronous cache by

installing 3.3V SRAMs, you need to install zero-ohm resistor chips at

2-8 User’s Guide

Hardware Setup

U37

locations R249, R253, R254 and R255. See the following figure for the
location of the resistor chips.

U36

Installing the SRAM

Follow these steps to install SRAMs:

1. Locate the cache sockets on the system board. See the section Board

Layout.

2. Insert the SRAM chip into the socket. Align the straight edge of the

chip with the straight edge of the socket. Also, make sure that the cut
edge of the chip corresponds to the cut edge of the cache socket. See
the following figure.

U27
U28
U29

User’s Guide 2-9

U34
U35
U36

Hardware Setup

Press the SRAM chip gently but firmly into
place. Be careful not to bend the pins.

Selecting the Flash ROM Type

Set the 3-pin jumper JP9 according to the Flash ROM type. If you use 5V
Flash ROM, you must close pins 1-2 of JP9. For a 12V Flash ROM, the
required setting is 2-3. The default setting is 1-2.

Flash ROM JP9

5V

12V

2-10 User’s Guide

Hardware Setup

Clearing the CMOS

The 3-pin jumper JP12 clears the values in the CMOS. You need to clear
the CMOS if you forget your system password. To do this, shut off the
system power and short pins 2-3 of JP12 for a few seconds. Reset the jumper
to the normal setting by shorting pins 1-2 with a jumper cap. Enter Setup to
specify a new password.

JP12

Default

Clear CMOS

Enabling the PS/2 Mouse (Optional)

The 2-pin jumper JP4 lets you enable or disable the PS/2 mouse. To enable,
simply close both pins of the jumper. To disable, leave the jumper open.

JP4

Enabled

Disabled

User’s Guide 2-11

Hardware Setup

Enabling the Onboard Super I/O Controller

The jumper JP3 on the system board allows you to enable or disable the
onboard I/O controller. To enable, set the jumper to 1-2. To disable, reset
the jumper to 2-3.

JP3

Enabled

Disabled

Selecting the ECP DMA Channel

The 3-pin jumpers JP1 and JP2 let you select the DMA channel for ECP
function. The available channels are DMA 1 and DMA 3.

JP1 JP2

DMA 1

DMA 3

2-12 User’s Guide

Hardware Setup

Memory Configuration

The system board supports a maximum memory of 128 MB. The four 72­pin SIMM sockets accommodate 4- and 16-MB single-density SIMMs, and
8- and 32-MB double-density SIMMs - with or without the Extended Data
Output (EDO) function. The EDO feature expands data transfer cycle, thus
improves memory performance. All SIMMs support a DRAM speed of
70/60 ns (or less). Refer to the section Board Layout and see the figure for
the location of the SIMMs.
The table below lists the SIMM types and their corresponding capacities.

SIMM Type Capacity

1 Mb x 32/36 4 MB
2 Mb x 32/36 8 MB
4 Mb x 32/36 16 MB
8 Mb x 32/36 32 MB

User’s Guide 2-13

Hardware Setup

The following are the possible SIMM configurations:

Total Memory SIMM 1/2 SIMM 3/4

8 MB 4 MB x 2
16 MB 4 MB x 2 4 MB x 2
16 MB 8 MB x 2
24 MB 8 MB x 2 4 MB x 2
32 MB 8 MB x 2 8 MB x 2
32 MB 16 MB x 2
40 MB 16 MB x 2 4 MB x 2
48 MB 16 MB x 2 8 MB x 2
64 MB 16 MB x 2 16 MB x 2
64 MB 32 MB x 2
72 MB 32 MB x 2 4 MB x 2
80 MB 32 MB x 2 8 MB x 2
96 MB 32 MB x 2 16 MB x 2

128 MB 32 MB x 2 32 MB x 2

2-14 User’s Guide

Hardware Setup

Installing a SIMM

Observe the ESD precautions when installing
components.

Follow these steps to install a SIMM:

1. Slip a SIMM at a 45o angle into a socket with the component side
facing down.

Be careful when inserting or removing SIMMs.
Forcing a SIMM in or out of a socket can
damage the socket or the SIMM (or both).

2. Gently push the SIMM up until the pegs of the socket slip into the holes
on the SIMM and the holding clips lock the SIMM into a vertical
position.

The SIMM should be at a 90o angle when
installed.

User’s Guide 2-15

Hardware Setup

Removing a SIMM

1. Press the holding clips on both sides of the SIMM outward to release it.

2. Press the SIMM downward to about a 45o angle.

3. Gently pull the SIMM out of the socket.

2-16 User’s Guide

Hardware Setup

Cache Module (Optional)

A system board that supports pipeline-burst cache does not have onboard
DIP-type SRAMs and a TAG RAM. Instead, it comes with a separate cache
module in an anti-static package.
Here’s how to install a cache module:

1. Observe the ESD precautions before you remove the cache module
from its protective packaging.

2. Remove the board from its protective packaging.

3. Locate the cache module slot on the system board. See the board layout
figure in Chapter 1.

4. Gently insert the golden fingers of the cache module into the slot and
press it into place. Make sure the module is properly seated.

Cache module

Golden fingers

Cache module slot

Do not replace the cache module that comes
with the motherboard. Installing cache
modules manufactured by other vendors may
cause hardware failure.

User’s Guide 2-17

Hardware Setup

( Turbo Switch )

( Turbo LED )

Connectors

Multifunction Connector

This 20-pin connector is marked CN15 on the system board. It supports a
number of system functions: green mode LED, break switch, keylock, and
speaker. Attach the front panel connectors to the corresponding pins as in
the illustration below.

Speaker Power LED Keylock

Speaker Power LED Keylock

Break Switch Green Mode LEDReset

Some housings have a five-pin connector for the keylock and power LED.
See the following illustration.

2-18 User’s Guide

Hardware Setup

( Turbo Switch )

( Turbo LED )

Ground

Speaker Keylock and Power LED

Speaker Keylock & Power LED

Reset

Break Switch Green Mode LED

Other housings may have a 12-pin connector. If your housing has this type
of connector, plug it into CN15 as shown in the following figure. Make sure
that the red wire of the connector connects to pin 11.

Ground

Reset

Res-VCC

Speaker

Break Switch

( Turbo Switch )

Keylock

Ground

VCC

User’s Guide 2-19

Hardware Setup

Break Switch

The break switch gives the user the option to directly enter the system
suspend mode by setting the switch to the on position. To set, simply press
the switch. Make sure that the break switch is in the off position before you
set it to the on position. To set it to the off position, simply press the switch
to release it from the on position.

Keyboard Connector

The keyboard connector is a 5-pin, AT-compatible connector. The following
figure shows how to connect a keyboard.

The PS/2 keyboard connector is optional.

2-20 User’s Guide

Hardware Setup

Power Connector

A standard power supply has two cables with six wires each. Attach these
cables to the power connector on the board in such a way that all the black
wires are in the center. The power connector is marked CN4 on the system
board.

User’s Guide 2-21

Hardware Setup

2-PIN FAN CONNECTOR (J3)

Fan Connectors

The board has one 4-pin and one 2-pin fan connector. The 4-pin fan
connector is marked CN13 on the system board and the 2-pin is marked
CN14. Figure below shows the pin configuration of each connector.

+12V +5V

4-PIN FAN CONNECTOR (CN13)

4-PIN FAN CONNECTOR (J2)

GND

2-PIN FAN CONNECTOR (CN14)

2-22 User’s Guide

Hardware Setup

Installation

The full baby-AT size of the AP5C/P system board easily fits most housings.
It has mounting holes that conform to the standard system housing.
Some housings may differ slightly in design, requiring additional steps to
install the board. Read the documentation that comes with the housing.

Make sure that you have already installed the
system board components like the CPU and
memory, and have set the appropriate jumpers
before you proceed.

Installing the System Board

1. Open the system housing.

2. Use the screws that come with the housing to secure the board.

3. Attach the power supply cables to the power connector and the front
panel connectors to the multifunction connector. See the section
Connectors.

4. Install any additional components that you have not yet installed.

User’s Guide 2-23

Hardware Setup

Installing Expansion Boards

Install any expansion boards after you have secured the system board in the
housing.
Follow these steps to install an expansion board.

1. Observe the ESD precautions before removing the expansion card from
its protective packaging.

2. Remove the bracket opposite the slot that you want to use. Save the
cover for future use. Save the screw to secure the expansion board.

3. Remove the board from its protective packaging.

4. Gently insert the golden edge of the board into the slot until it fits into
place.

Golden
Edge

ISA Slot

Golden Edge

PCI Slot

5. Secure the board bracket with the screw.

2-24 User’s Guide

AMI BIOS 3

AMI BIOS Setup Main Menu

The AMI BIOS Setup Main Menu appears below. Press c to enter the
system menu.

Chapter

The AMI BIOS is in Windows form. You can use either the keyboard or a
mouse to move between the items. To select among the Setup groups, use v
to highlight the selected group or simply click on the icon of the selected
Setup menu.
To select among the options, you can either use the arrow keys to move the
highlight bar or simply click on the icon of the desired option.
After selecting, press e or double-click on the icon to open the menu.

You can press h to enter the BIOS Setup screen. This
also enables you to do the following:

• Resolve an address conflict due to an IRQ

address assigned to multiple slots. For more
information on IRQ assignment, see the section
Chipset Features Setup.

• Return to the BIOS default settings if the PnP

User’s Guide 3-1

AMI BIOS

BIOS does not recognize the hardware
modifications under Windows 95.

Standard CMOS Setup

Highlight Setup using v or simply click on the Setup icon. Select

Standard to input configuration values such as the date, time, and disk

types. The Standard CMOS Setup pop-up window appears below:

Date/Time

To set the date and time, highlight Date/Time and press e or double­click on the Date/Time icon. The following screen appears:

Use the arrow keys to move among the items. Press the + and - keys or click
the + and - icons to set the current date and time. Close the window by
pressing e or double-clicking the Control menu box in the upper-left corner
of the window.

3-2 User’s Guide

AMI BIOS

Floppy Drives A and B

To configure the floppy drive, select Floppy A. The following values
appear on the screen:

After selecting the proper setting, press e or double-click the Control menu
box to close the window.
Select Floppy B and follow the same procedure to configure the second
floppy drive, if present.

Hard Disk Drives

Select Master Hard Disk to configure the first hard disk. The
following values appear on the screen:

User’s Guide 3-3

AMI BIOS

If you cannot find your hard disk drive type on the list, select User and
enter the disk parameters. You can also select Utility Setup. This
automatically configures your hard disk. Refer to the section Utility Setup
for more information.
Select ESDI or SCSI depending the device installed.
If you have two hard disks installed, select Slave Disk and follow the
same procedure to configure the second hard disk.

3-4 User’s Guide

AMI BIOS

Advanced CMOS Setup

The window below appears if you select the Advanced option.

The screen above does not show all the parameters of the Advanced
Configuration menu. Use w or y to highlight the desired parameter. Press }
to view the rest of the parameters. The following screens appear:

User’s Guide 3-5

AMI BIOS

Typematic Rate (Chars./Sec.)

This parameter determines the typematic rate. The typematic rate settings
are 15, 20, 30 and Disabled. The default setting is 30. Select

Disabled to disregard the rate setting.

System Keyboard

Set this parameter to Present if there is a keyboard connected to the
system. However, some servers may not have keyboards. Select Absent
if there is no keyboard present.

3-6 User’s Guide

AMI BIOS

Primary Display

This function detects the type of VGA in use. The settings are VGA/EGA,
CGA 40 x 25, CGA 80 x 25, Mono, and Absent. The default setting is

VGA/EGA.

PS/2 Mouse Support

Setting this parameter to Enabled lets you support a PS/2 mouse.
However, if you enable this function, you need to short the onboard jumper
JP4. Disable the parameter to disregard the function. The default setting is

Disabled.

Above 1 MB Memory Test

This parameter allows your system to check all available memory.
Therefore, setting this parameter to Enabled slows down the power-on
self-test. The default setting is Disabled.

Memory Test Tick Sound

Enabling this parameter lets you hear the tick sound during the memory test.
Disable the parameter to bypass the function.

Hit “Del” Message Display

This option lets you enable or disable the Hit <Del> if you want Setup
message from appearing when the system boots. The default setting is

Enabled.

Extended BIOS RAM Area

This function allows you to relocate the BIOS from ROM to RAM.
Relocating to RAM enhances system performance as information access is
faster than ROM. The parameter settings are 0:300 and DOS 1K. The
default address is 0:300.

User’s Guide 3-7

AMI BIOS

Wait for F1 If Any Error

If this option is enabled, the BIOS waits for the end user to press l before
continuing. If this option is disabled, the BIOS continues the boot process
without waiting for l to be pressed. The default setting is Enabled.

System Boot-up Num Lock

Setting this parameter to On enables the numeric function of the numeric
keypad. Set this parameter to Off to disregard the function. Disabling the
numeric function allows you to use the numeric keypad for cursor control.
The default setting is On.

Floppy Drive Seek at Boot

When enabled, the BIOS detects whether there is a floppy disk drive
installed. Disable the parameter to bypass the function. The default setting
is Disabled.

Floppy Drive Swapping

This parameter allows you to swap floppy drives. For example, if you have
two floppy drives (A and B), you can assign the first drive as drive B and the
second drive as drive A or vice-versa. Disable the parameter to bypass the
function. The default is Disabled.

System Boot-up Sequence

The settings are C:, A: and A:, C: to specify the system search sequence.
The default setting is A:,C:.

Password Checking

The settings are Setup and Always. The Setup setting allows the system to
boot and use the password only to protect the Setup Utility Configuration
settings from being tampered with. The Always setting requires you to enter
the password everytime you boot the system. The default setting is Setup.

3-8 User’s Guide

AMI BIOS

Cache Memory

The available selections for this parameter are Internal, Both and Disabled.
Select Internal if you want to enable the internal cache memory. Select

Both if you want to use both the internal and external cache memories.

Select Disabled to disregard the internal and external cache features.

System BIOS Shadow Cacheable

The default setting for this parameter is Enabled. This enhances the
system performance. Disabling the parameter prevents the system BIOS
from being cached.

Adapter ROM Control

C000, 32 K

This address is for shadowing video ROMs. Select Shadow to assign the
address for shadowing expansion video card with ROM. Select Cache to
assign them for cache. The default setting is Cache.

C800 ~ DC00, 16 K

These addresses are for shadowing other expansion card ROMs. The default
setting for these areas is Disabled. Set the addresses to Shadow if
you want to use them for shadowing expansion cards with ROM. Set the
addresses to Cache to assign them for cache.

The F000 and E000 addresses are exclusively
shadowed for BIOS.

IDE Control

IDE Auto-detect

There are cases wherein the HDD parameters that you entered and those
detected by the auto-detection function are mismatched. This causes the
system not to boot. If this happens, we recommend that you set this

User’s Guide 3-9

AMI BIOS

parameter to Disabled to bypass the auto-detection function. The default
setting is Disabled.

Block Mode

This function enhances disk performance depending on the hard disk in use.
This parameter is normally set to Auto. This setting allows data transfer in
block (multiple sectors) by increasing the data transfer rate. The other
selections for this parameter are 2 S/B, 4 S/B, 8 S/B, 16 S/B, 32 S/B, 64
S/B and Disabled. Disable the parameter if your hard disk does not support
this feature.

Onboard IDE Present

The settings for this function are Auto, Enabled and Disabled. Select

Enabled if you have an onboard PCI IDE. Select Auto to

automatically detect the presence of PCI IDE. Select Disabled to
disregard the PCI IDE function.

PIO Mode

This parameter lets you set the PIO mode that your onboard PCI IDE
supports. The selections are from Mode 0 to Mode 4, Auto and Disabled.
Set this parameter either by entering the PIO mode manually or selecting

Auto to automatically detect the supported PIO mode. Disable the

parameter to bypass the feature.

32-bit Mode

Enabling this function improves the hard disk performance by increasing the
data transfer rate from 16-bit to 32-bit.

Primary 1st LBA Mode

This enhanced IDE feature allows you to use a hard disk with a capacity
higher than 528 MB. This is made possible through the Logical Block
Address (LBA) mode translation. This parameter affects the primary IDE
hard disk drive connected to the IDE 1 connector. The default setting is

Enabled.

3-10 User’s Guide

AMI BIOS

Primary 2nd LBA Mode

This enhanced IDE feature allows you to use a hard disk with a capacity
higher than 528 MB. This is made possible through the Logical Block
Address (LBA) mode translation. This parameter affects the secondary IDE
hard disk drive connected to the IDE 1 connector. The default setting is

Enabled.

Secondary 1st LBA Mode

This enhanced IDE feature allows you to use a hard disk with a capacity
higher than 528 MB. This is made possible through the Logical Block
Address (LBA) mode translation. This parameter affects the primary IDE
hard disk drive connected to the IDE 2 connector. The default setting is

Enabled.

Secondary 2nd LBA Mode

This enhanced IDE feature allows you to use a hard disk with a capacity
higher than 528 MB. This is made possible through the Logical Block
Address (LBA) mode translation. This parameter affects the secondary IDE
hard disk drive connected to the IDE 2 connector. The default setting is

Enabled.

Secondary Drives Present

This parameter lets you install up to two IDE hard disks in the secondary
channel. Select None if you do not have any.

ISA PnP Function

This parameter lets you enable or disable the Plug-and-Play feature. The
default setting is Disabled. If you are using Windows 95, we
recommend you to select Enabled.

Power-on Delay

This parameter lets you set the POST waiting time for the HDD motor to
stabilize before boot up. The available settings are from 1 to 15 sec and
Disabled. The default is Disabled.

User’s Guide 3-11

AMI BIOS

Chipset Setup Mode

This function allows you to change the Chipset Setup DRAM control
parameters according to the end-user type. The available settings are End­user and Engineer. We recommend that you select End-user. See the
following section for more details on Chipset Features Setup.

Chipset Features Setup

The Chipset Features Setup controls the board's chipset settings. The
controls for this menu are the same as for the previous screen.
The Chipset Setup DRAM control parameters differ depending on the
Chipset Setup Mode setting in the Advanced CMOS Setup. This screen
appears if you select the Chipset option from the Setup menu and if the
Chipset Setup Mode parameter setting is End-user.

The following screen appears if your Chipset Setup Mode parameter setting
is Engineer. Take note of the DRAM control parameters.

3-12 User’s Guide

AMI BIOS

Both screens do not show all the parameters of the Chipset Setup menu. Use

w or y to highlight the desired parameter. Press } to view the rest of the

parameters. The following screens appear regardless of the end-user type or
the Chipset Setup Mode parameter setting:

User’s Guide 3-13

AMI BIOS

SRAM Type

This parameter allows the user to select the transmission mode that your
SRAM supports. The selections are Asyn, Burst and Pipeline. The Asyn or
asynchronous mode is also known as the start-stop-bit transmission, wherein
the transmission of data is only one-way and per character. This is the most
common form of data transmission. The Burst mode supports the
simultaneous transmission of data in fixed blocks. The Pipeline-burst mode
allows simultaneous transmission of data in four continuous clocks (no
recovery time within each clock). The default setting is Asyn.

3-14 User’s Guide

AMI BIOS

DRAM Control

Read/Write Leadoff*

Before data can be accessed, the core logic must issue the memory address
signal, the column address strobe (CAS) signal and the row address strobe
(RAS) signal to the DRAM. However, these signals are not issued at the
same time. The time difference between the issuance of these signals is
called the lead-off time.
The lead-off time for read and write actions varies depending on the DRAM
type. Some DRAMs may even require a longer delay to access data. This
parameter allows you to set the lead-off time. The default setting is 8

T/6T.

Read Burst Timing*

This parameter adjusts the read wait state between the L2 and the DRAM
cache. Everytime the CPU reads a L2 cache miss, it reads four continuous
addresses from the DRAM cache.
The available settings are X-4-4-4, X-3-3-3 and X-2-2-2. The value of X
depends on the DRAM Lead-off Timing parameter setting. Faster DRAMs
require shorter wait states. The default setting is X-4-4-4.

Write Burst Timing*

This parameter adjusts the write wait state between the L2 and the DRAM
cache. Each cache write process consists of four continuous cache cycles
and therefore, this function has four numbers to adjust. The selections are X­4-4-4, X-3-3-3 and X-2-2-2. The value of X depends on the DRAM Lead­off Timing parameter setting. Faster DRAMs require shorter wait states.
The default setting is X-4-4-4.

RAS to CAS Delay*

This function allows you to set the wait state between the RAS and CAS
signals. The available settings are 3T and 2T. The default setting 3T.

* This parameter appears only if the Chipset Setup Mode parameter in the

Advanced Setup screen is set to Engineer.

* This parameter appears only if the Chipset Setup Mode parameter in the

Advanced Setup screen is set to Engineer.

User’s Guide 3-15

AMI BIOS

RAS Precharge*

This function lets you set the RAS precharge time. The RAS Precharge time
refers to the period it takes for the core logic to charge the RAS signal before
issuance. Some DRAMs require shorter time to charge RAS signals.
The selections for this parameter are 3T and 4T. The default setting is 3T.

Speed

This DRAM control parameter lets you set the DRAM speed. The speed
settings are 60 ns and 70 ns. The default setting is 70 ns.

Memory Hole

This option lets you set the system memory area that you need to avoid
memory conflicts. The settings are 512 ~ 640 K, 15 ~ 16 M and Disabled.

ISA Control

8-bit I/O Recovery Time

This parameter allows you to set the response time of the 8-bit I/O connected
to your system. The range is from 1~7 SYSCLK. The default setting is 4

SYSCLK.

16-bit I/O Recovery Time

This parameter allows you to set the response time of the 16-bit I/O
connected to your system. The range is from 1~4 SYSCLK. The default
setting is 1 SYSCLK.

PCI Control

PCI VGA Palette Snooping

PCI devices support the “palette snooping” technique that enables the device
to control access to their palette registers.

* This parameter appears only if the Chipset Setup Mode parameter in the

Advanced Setup screen is set to Engineer.

3-16 User’s Guide

AMI BIOS

Set this parameter to Enabled to activate the palette snooping function in
the PCI VGA devices installed in your system.

PCI-IDE Card Selection

This parameter allows you to select the PCI-IDE card that you want to
enable. The board can support a maximum of four PCI-IDE cards. The
available selections are Slot 1, Slot 2, Slot 3, Slot 4, and Absent. Select

Absent if you do not have any PCI card installed.

PCI Primary IDE INT# Line

This parameter lets you assign an INT for the IDE device connected to your
primary IDE connector. The settings are INT A, INT B, INT C, INT D,
Absent and Not Used. If you do not have any PCI IDE card installed in
your system and your PCI IDE Card Selection parameter setting is

Absent, this parameter becomes non-configurable.

PCI Secondary IDE INT# Line

This parameter lets you assign an INT for the IDE device connected to your
secondary IDE connector. The settings are INT A, INT B, INT C, INT D,
Absent and Not Used. If you do not have any PCI IDE card installed in
your system and your PCI IDE Card Selection parameter setting is

Absent, this parameter becomes non-configurable.

PCI Slot 1, 2, 3, and 4

These functions allow you to assign an IRQ for each PCI slot in use. The
selections are IRQs 3, 4, 5, 7. 10, 11, 12, Auto and None. Selecting Auto
enables the BIOS to automatically assign an available IRQ for the selected
PCI slot. Select None if the PCI slot is not in use or to disregard the slot.
The default setting is Auto.

IRQ Allocated

IRQ 3, 4, 5, 7, 9, 10, 11, 14, 15 is for...

These lines allow you to assign the available IRQs to either ISA or PCI/PnP
device.

User’s Guide 3-17

AMI BIOS

If the same IRQ address is assigned to multiple slots,
an address conflict occurs. To resolve this, press h
during boot-up. This enables the BIOS to reassign
the IRQ addresses.

Power Management Setup

To take advantage of the power management features, select Power

Management from the Setup menu. To select, highlight Power Mgmt

and press e or double-click on the Power Management icon. The following
screen appears:

The screen above does not show all the parameters of the Power
Management Setup menu. Use w or y to highlight the desired parameter.
Press } to view the rest of the parameters. The following screens appear:

3-18 User’s Guide

AMI BIOS

Advanced Power Management

Set this parameter to Enabled to take advantage of the power-saving
feature. Disable the parameter to bypass the feature.

Full-on to Standby Timeout

This function lets you set when to put the system into standby mode. In
standby mode, the CPU clock slows down and the video signal is suspended.
Full power returns when an event is detected. The settings range from
1~255 Min and Disabled.

Standby to Suspend Timeout

This function lets you set when to put the system into suspend mode. In
suspend mode. the CPU clock stops, the IDE hard disk spins down and the
video signal is suspended. This mode conserves the most energy. Full
power returns when an event is detected. The settings range from 1~255
Min and Disabled.

IDE Drive Power Down in

This option allows you to set the mode when to "spin down" your IDE hard
disk. The disk returns to full speed once the system resumes to normal
mode. The settings are Standby, Suspend and Disabled.

User’s Guide 3-19

AMI BIOS

Video Power Down in

This option allows you to set the mode when to power down your video
monitor. The video monitor returns to full power once the system resumes to
normal mode. The settings are Standby, Suspend and Disabled.

VGA Power Down Mode

This option lets you choose the VGA power down mode. The settings are
Standby, Suspend and Off.

Slow Clock Ratio

When the system enters the standby mode, the CPU clock starts to slow
down. This parameter lets you set the “slow-down” clock ratio. The settings
are 1:2, 1:4, 1:8, 1:16, 1:32, 1:64, and 1:128.

Break Event (IRQ 3~7, 9~15)

Enabling these parameters allow your system to monitor the IRQ activities.
Any activity detected resets the power-management timers and resumes the
system to normal mode.

You must enable at least one IRQ activity.
Otherwise, the system stays in suspend mode.

3-20 User’s Guide

AMI BIOS

Peripheral Setup

This screen appears if you select Peripherals or double-click on the
Peripheral Setup icon from the Setup menu. The Peripheral Setup screen
allows you to set up your system peripherals.

Programming Mode

The settings for this option are Auto and Manual. The Manual setting
allows you to set up the screen items manually. The Auto setting sets up all
the items automatically except for the Parallel Port Mode parameter.

Onboard FDC

Enabling this function allows you to use the onboard floppy disk controller
(FDC). The default setting is Enabled.

Serial Port 1

This parameter allows you to set the base address of serial port 1. The
available settings are 3F8H, 2F8H, 3E8H, 2E8H and Disabled.

User’s Guide 3-21

AMI BIOS

Serial Port 2

This parameter allows you to set the base address of serial port 2. The
available settings are 3F8H, 2F8H, 3E8H, 2E8H and Disabled.

Parallel Port

This parameter allows you to set the base address of the parallel port. The
available settings are 3BCH, 378H, 278H and Disabled..

Parallel Port Mode

This option lets you set the parallel port mode. The settings are Normal or
Extended.

Parallel Port Extended Mode

This parameter is configurable only if the Parallel Port Mode parameter is set
to Extended. This enables the extended mode functions of the parallel
port. The selections are EPP, ECP, and ECP & EPP. The EPP setting
allows the parallel port to operate in bidirectional mode at maximum speed.
The ECP setting allows the parallel port to operate in bidirectional mode and
at a speed higher than maximum data transfer rate. The ECP & EPP setting
enables the parallel port to support both features. The default setting is ECP.

3-22 User’s Guide

AMI BIOS

Utility Setup

IDE Setup

This function allows your system to automatically configure your IDE hard
disk(s). This screen appears if you select IDE Setup.

After a few seconds, the screen below appears showing your disk(s)
parameters. Select Yes to accept the values.

User’s Guide 3-23

AMI BIOS

Color Set

This pop-up window appears if you select Color Set from the Utility
Setup menu.

Color Set lets you select the color of your windows background. The
selections are LCD, Army, Pastel, and Sky.

Default Setup

Select this option to automatically set your system configuration parameters.
To select, highlight Default and press e.

Original

This option loads the values that you saved before shutting off the system.
The following prompt appears if you choose Original from the Default
Setup menu. Select Yes to load the original values.

Optimal

Choose this option and the BIOS configures the system using the best-case
values to optimize system performance. However, these values may not be
applicable to your system. If your system does not boot after choosing this

3-24 User’s Guide

AMI BIOS

setting, reconfigure it using the Fail-safe settings. Refer to the following
section.

The screen below appears if you choose Optimal from the Default
Setup menu. Select Yes to load the optimum values.

Fail-safe

Choose this option and the BIOS automatically configures the system using
the most stable settings. These settings are not necessarily the best settings
for system performance, but safe and stable enough to guarantee you that
your system will boot. This is useful if you are having problems with your
current system configuration and need to determine the cause.
A prompt appears if you choose Fail-safe from the Default Setup
menu. Select Yes to load the fail-safe values.

Security Setup

Password

The system password prevents unauthorized use of your computer. If you
enabled the password feature, it is impossible to boot the computer without
entering the password.

User’s Guide 3-25

AMI BIOS

To set a password, highlight Password or simply double-click the
Password icon. The following screen appears:

Your password can consist of up to six characters. The password does not
appear on the screen. WinBIOS prompts you to retype the password. The
following screen appears.

If you forget your password, you must clear the CMOS RAM and
reconfigure the system.

3-26 User’s Guide

AMI BIOS

To disable the password, press e when prompted for your password. Press e
again when prompted to retype the password.

User’s Guide 3-27

AMI BIOS

Anti-virus

Set this parameter to Enabled to protect the boot sector and partition table
of your hard disk from virus intrusion. Set it to Disabled to bypass the
feature.
A prompt appears when you select Anti-virus from the Security Setup
menu:

Select Enabled and the screen below appears:

3-28 User’s Guide

AMI BIOS

Exit Setup

To exit Setup, you can either double-click on the Control menu box or
simply press ^. A dialog box appears on the screen.

If you select Save Changes and Exit, the BIOS automatically
saves all CMOS values before leaving Setup. Select Do Not Save

Changes and Exit to exit Setup without saving the CMOS values.

Select Continue to return to Setup if you want to reconfigure your
system.

User’s Guide 3-29

AMI BIOS

NCR SCSI BIOS and Drivers

The NCR 53C810 SCSI BIOS resides on the same flash memory chip as the
system BIOS. To use the onboard NCR BIOS, you need to install an NCR
53C810 SCSI controller card in your system.
All SCSI devices that you install in your system require software drivers.
The NCR SCSI BIOS directly supports SCSI hard disks under DOS,
Windows and OS/2. It also uses DOS-format and SCO UNIX-format
support floppy disk device drivers that come with the NCR 53C810 SCSI
controller card. The DOS-format device drivers are for SCSI devices used
with DOS, Windows NT, Novell NetWare and OS/2. The SCO UNIX­format device drivers are for SCSI devices used with SCO UNIX. These
drivers offer higher performance than the direct BIOS support.
To use the device drivers, you must install them in your system hard disk
drive and add them to your system configuration files. For detailed
installation instructions, see the README files that come with the drivers.

The system board also supports the AMI Flash
Memory Writer Utility that allows you to
upgrade the system BIOS. For more
information on this utility, contact your local
distributor.

3-30 User’s Guide

Jumper Summary A

CPU Type

CPU Type JP5 JP6 JP8

P54C-75 1-2 1-2, 3-4 1-2, 3-4
P54C-90 2-3 1-2 1-2, 3-4
P54C-100 2-3 3-4 1-2, 3-4
P54C-120 2-3 1-2 3-4, 5-6
P54C-133 2-3 3-4 3-4, 5-6
P54C-150 2-3 1-2 5-6, 7-8
P54C-166 2-3 3-4 5-6, 7-8
P54C-200 2-3 3-4 1-2, 7-8
Cyrix 6x86 - P120+ 1-2 1-2, 3-4 Open

Cache and Size

Cache Size JP7

256 KB 1-2
512 KB 2-3

Flash ROM Type

Appendix

Flash ROM JP9

5V 1-2

12V 2-3

CMOS

Function JP12

Default (Normal) 1-2
Clear CMOS 2-3

PS/2 Mouse (Optional)

Function JP4

Enabled Closed

Disabled Open

User’s Guide A-1

Jumper Summary

Onboard Super I/O Controller

Function JP3

Enabled 1-2

Disabled 2-3

ECP DMA Channel

ECP DMA Channel JP1 JP2

DMA 3 1-2 1-2
DMA 1 2-3 2-3

Onboard Connectors

Connector Function

CN1 AT-keyboard connector
CN2 PS/2 keyboard connector (optional)
CN3 PS/2 mouse connector (optional)
CN4 Power connector
CN5 Parallel port connector
CN6 COM 2 connector
CN7 COM 1 connector
CN8 FDC connector
CN9 IDE 2 connector
CN10 IDE 1 connector
CN11 VRM
CN12 HDD LED connector
CN13 4-pin fan connector
CN14 2-pin fan connector
CN15 Multifunction connector

A-2 User’s Guide

Notice

For motherboards with onboard asynchronous
cache:

If you want to upgrade your second-level cache to
pipelined-burst cache, contact the board
manufacturer. DO NOT install cache modules
manufactured by other vendors. These cache
modules are NOT compatible with the board and
therefore may cause hardware failure.

1

Notice

Refer to this page for the updated information regarding the AP5C/P
motherboard.
The figure below shows the location of the hard disk LED connector on the
motherboard.

The board may come either with a SMC 665/669 or a UMC 8669F system
I/O controller. Due to this hardware modification, the BIOS has also been
modified. The IRQ Active parameter (refer to the Peripheral Setup screen in
the user’s guide) has been deleted and a new parameter (Parallel Port
Extended Mode) has been added. The following screen shows the new
Peripheral Setup menu.

1

Notice

Parallel Port Extended Mode

This parameter is configurable only if the Parallel Port Mode parameter is set
to Extended. This enables the extended mode functions of the parallel
port. The selections are EPP, ECP, and ECP & EPP. The EPP setting
allows the parallel port to operate in bidirectional mode at maximum speed.
The ECP setting allows the parallel port to operate in bidirectional mode and
at a speed higher than maximum data transfer rate. The ECP & EPP setting
enables the parallel port to support both features. The default setting is ECP.

2