AOpen AP55CS User manual

AP55CS
User’s Guide

Copyright
ii
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.

Disclaimer
iii
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 and P54C is a trademark of Intel Corporation.
Other brand and product names are trademarks and/or registered trademarks of their
respective holders.

FCC Statement
iv
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.

About this Manual
v
Purpose and Scope
This manual tells how to install and configure the system board.
Organization
This manual consists of four 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, VGA, describes the video graphics accelerator on board, and
lists the supported applications and display modes.
Chapter 4, 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.

About this Manual
vi
Conventions
The following conventions are used in this manual:
Text entered by user,
default settings,
recommended selections
Represent text input by the user,
default settings and recommended
selections
message displayed Denotes actual messages that appear
on screen
a, e, s, etc 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 doing or not doing specific
actions.
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
with minimum steps through little
shortcuts.

Table of Contents
vii
1Features
Specifications.....................................................1-2
Board Layout......................................................1-3
System Board Parts............................................1-4
Microprocessor..........................................1-4
ASICs ........................................................1-4
AMI BIOS...................................................1-5
Expansion Slots.........................................1-5
DRAM Sockets...........................................1-5
SRAMs.......................................................1-5
Super I/O Controller...................................1-6
VGA Controller..........................................1-6
Two-channel PCI Mode 4
Enhanced IDE Interface............................1-6
Keyboard Connector..................................1-6
2Hardware Setup
ESD Precautions................................................2-1
Installing a Microprocessor................................2-2
ZIF Microprocessor Socket........................2-2
Upgrading the Microprocessor...........................2-3
Jumper Settings.................................................2-4

Table of Contents
viii
Changing the CPU Type and Speed.........2-5
Changing the Flash ROM Type.................2-6
Selecting the ECP DMA Channel..............2-6
Enabling the FDC and Super I/O Chip......2-7
Selecting the Cache Mode.........................2-7
Enabling the Onboard VGA.......................2-8
Clearing the CMOS....................................2-9
Memory Configuration......................................2-10
Installing a SIMM.....................................2-12
Removing a SIMM...................................2-13
Connectors.......................................................2-14
Multifunction Connector...........................2-14
Keyboard Connector................................2-16
Power Connector.....................................2-16
Fan Connector.........................................2-17
VGA Connector........................................2-17
Break/Suspend Connector.......................2-18
Voltage Regulator Module (VRM)
Connector (optional)................................2-19
Installation........................................................2-19
Installing the System Board.....................2-19
Installing Expansion Boards....................2-20

Table of Contents
ix
3VGA
Drivers and Utilities............................................3-2
Getting Started..........................................3-2
Supported Applications..............................3-2
Driver Diskettes.........................................3-3
Installing the Drivers..................................3-5
Standard Display Modes....................................3-6
Enhanced Video Modes.....................................3-7
MPEG Function..................................................3-9
4AMI BIOS
AMI BIOS Setup Main Menu..............................4-1
Standard CMOS Setup.......................................4-2
Date/Time..................................................4-2
Floppy Drives A and B...............................4-3
Hard Disk Drives........................................4-4
Advanced CMOS Setup.....................................4-5
Typematic Rate (Chars./Sec.)...................4-7
System Keyboard.......................................4-8
Primary Display..........................................4-8
Above 1 MB Memory Test.........................4-8
Memory Test Tick Sound...........................4-8
Parity Error Check.....................................4-8

Table of Contents
x
Hit “Del” Message Display.........................4-9
Extended BIOS RAM Area.........................4-9
Wait for F1 If Any Error..............................4-9
System Boot-up Num Lock........................4-9
Floppy Drive Seek at Boot.......................4-10
Floppy Drive Swapping............................4-10
System Boot-up Sequence......................4-10
Password Checking.................................4-10
Cache Memory.........................................4-10
Shadow....................................................4-11
IDE ......................................................4-12
1st Priority IRQ for PCI/PnP....................4-18
2nd IRQ...................................................4-18
3rd IRQ....................................................4-18
ISA Memory Block Base..........................4-18
ISA Memory Block Size...........................4-19
Boot to PnP Operating System................4-19
Chipset Setup Mode................................4-19
Chipset Features Setup...................................4-20
VGA Shared Memory Size.......................4-23
VGA Frequency.......................................4-23
DRAM......................................................4-23
SRAM ......................................................4-23