AOpen AP53 User Manual
AP53
Mainboard
User Guide
Copyright
Copyright 1996 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.
Intel and Pentium are registered trademarks of Intel Corporation.
XT/AT is a registered trademark of International Business Machines Corporation.
AMI is a registered trademark of American Megatrends Inc.
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, Overview, covers the specifications, layout, and components of the
system board.
Chapter 2, Hardware Installation, tells how to install the hardware
components, configure the system by resetting the jumpers, install the system
board and add expansion cards.
Chapter 3, AMI BIOS Utility, explains the system BIOS and tells how to
configure the system by setting the BIOS parameters.
Appendix A, Jumper and Connector Summary, gives you a tabular
summary of the jumper settings and onboard connectors discussed in Chapter
2.
v
About This Manual
Conventions
The following conventions are used in this manual:
Text entered by user,
default settings,
recommended
selections
a, e, s, etc
Represent text input by the user, default
settings and recommended selections
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.
vi
Table of Contents
Chapter 1 Overview
1.1 Board Layout.........................................1-2
1.2 Specifications .......................................1-3
1.3 System Board Parts..............................1-4
1.3.1 Microprocessor ................................. 1-4
1.3.2 ASICs ...............................................1-4
1.3.3 BIOS.................................................1-4
1.3.4 Expansion Slots................................ 1-5
1.3.5 DRAM Sockets .................................1-5
1.3.6 Second-level Cache .........................1-5
1.3.7 Two-channel PCI Mode 4
Enhanced IDE Interface...................1-5
1.3.8 Super I/O Controller..........................1-6
1.3.9 Keyboard Connector.........................1-6
1.3.10 Mouse Connector .............................1-6
Chapter 2 Hardware Installation
2.1 ESD Precautions...................................2-1
2.2 Jumper Locations.................................2-2
2.3 Setting the Jumper ...............................2-3
2.4 Installing a Microprocessor .................2-3
vii
Table of Contents
2.5 Upgrading the Microprocessor............2-7
2.6 Configuring the System Memory.........2-7
2.6.1 Installing a SIMM .............................. 2-9
2.6.2 Removing a SIMM ..........................2-10
2.7 Customizing your
Hardware Setup ..................................2-11
2.7.1 Selecting the Flash ROM Type.......2-11
2.7.2 Disabling the Onboard Super I/O
Controller .......................................2-11
2.7.3 Selecting the ECP DMA Channel ...2-12
2.7.4 Clearing the CMOS ........................2-12
2.7.5 Disabling the
PS/2 Mouse Function.....................2-13
2.7.6 Setting the Keyboard Clock ............2-13
2.8 Installing the System Board...............2-14
2.9 Connecting Peripherals......................2-15
2.9.1 Power Cable...................................2-15
2.9.2 Mouse.............................................2-15
2.9.3 Serial Devices (COM1/COM2)........2-16
2.9.4 Floppy Drives..................................2-16
2.9.5 Printer.............................................2-17
2.9.6 IDE Devices.................................... 2-17
2.9.7 Front-panel Switches and LEDs .....2-18
2.9.8 Keyboard ........................................2-19
viii
Table of Contents
2.10 Installing Expansion Boards..............2-20
Chapter 3 AMI BIOS Utility
3.1 Entering the AMI BIOS Setup............... 3-1
3.2 Setup Menu ...........................................3-2
3.2.1 Standard Setup ................................3-3
3.2.2 Advanced CMOS Setup ...................3-7
3.2.3 Chipset Features Setup.................. 3-13
3.2.4 Power Management Setup ............. 3-17
3.2.5 PCI/PnP Setup ...............................3-20
3.2.6 Peripheral Setup.............................3-24
3.3 Security Setup..................................... 3-26
3.3.1 Supervisor Password......................3-27
3.3.2 User Password ............................... 3-28
3.3.3 Anti-virus.........................................3-29
3.4 Utility Setup ......................................... 3-29
3.4.1 Color Set ........................................3-30
3.4.2 Language .......................................3-30
3.5 Default Setup.......................................3-31
3.5.1 Original ...........................................3-31
3.5.2 Optimal ...........................................3-32
3.5.3 Fail-safe..........................................3-32
3.6 Exiting Setup.......................................3-33
ix
Table of Contents
3.7 NCR SCSI BIOS and Drivers ..............3-34
Appendix A Jumper and Connector Summary
x
Chapter 1
Overview
The AP53 is a high-performance Pentium-based system board that utilizes
the PCI/ISA architecture. It integrates the Intel 430HX PCIset, a super I/O
controller, a PCI mode 4 enhanced IDE controller with bus master support and
a 256-KB pipelined-burst cache to enhance system performance. It also has
four single in-line memory module (SIMM) sockets that allow memory
expansion up to a maximum of 512 MB.
One main feature of AP53 is the green power-management function that
extends energy conservation from system components to display monitor. It
complies with the power-saving standards of the U.S. Environmental Protection
Agency (EPA) Energy Star program.
The AP53 board measures 220 mm x 250 mm and may come with or without a
voltage regulator module (VRM). The VRM enables the board to support future
2.5V processors.
1-1
Overview
1.1 Board Layout
1 Power connector 14 Voltage regulator with heatsink
2 SIMM sockets 15 Real-time clock and battery
3 Floppy disk drive connector 16 ISA slots
4 Parallel port connector 17 Keyboard controller
5 Primary IDE connector 18 BIOS
6 Secondary IDE connector 19 Super I/O controller
7 Intel 82439 chip 20 PCI slots
8 Pipelined-burst cache 21 COM1 connector
9 Intel 82371 chip 22 COM2 connector
10 CPU socket 23 PS/2 mouse connector
11 Two-pin fan connector 24 AT-keyboard connector
12 Multifunction connector
13 HDD LED connector
1-2
1.2 Specifications
Overview
Microprocessor
Memory
SIMM Sockets
ASICs
Bus Architecture
Expansion Slots
Ports
Secondary Cache
BIOS
RTC & Battery
Board Size
Pentium (3.3V) Processor
75/90/100/120/133/150/166/200 MHz
512 MB (maximum)
72-pin SIMM x 4
Intel 430HX PCIset
ISA, PCI
Three ISA and four PCI slots
One parallel port (SPP/ECP/EPP)
Two serial ports (UART 16C550)
Two-channel PCI mode 4 IDE ports
(bus master transfer support)
One floppy disk drive port
(360/720 K, 1.2/1.44/2.88 MB)
256-KB pipelined-burst cache
AMI Plug-and-Play Flash ROM BIOS
Dallas DS12887A
220 mm x 250 mm
1-3
Overview
1.3 System Board Parts
1.3.1 Microprocessor
The AP53 system board uses an Intel Pentium (3.3V) processor running at 75,
90, 100, 120, 133, 150, 166, or 200 Hz. Chapter 2 tells how to install and
upgrade a Pentium processor.
1.3.2 ASICs
The application-specific integrated circuits (ASICs) are the Intel 82439 and Intel
82371 that belong to the Intel 430HX PCIset. This chipset allows the system to
support a higher memory (512 MB) and a pipelined-burst cache. It also offers
an error checking and correction (ECC) feature that enables the system to
detect, as well as correct the DRAM errors.
The Intel 82439 that comes in a unique ball-grid array (BGA) packaging, acts
as the memory controller data path and the DRAM data bus buffer. The Intel
82371 operates as the PCI/ISA bridge and IDE controller.
1.3.3 BIOS
The board supports the AMI basic input-output system (BIOS). The BIOS is a
program that performs the power-on self test (POST) upon booting. During
POST, this program activates the peripheral devices, tests onboard memory
and prepares the system for operation. For more information on AMI BIOS,
see Chapter 3.
1-4
Overview
1.3.4 Expansion Slots
The board has three ISA and four PCI expansion slots. The ISA expansion
slots are the black parallel bars on the system board. The PCI slots are those
with white color and are shorter than the ISA slots. There are rows of golden
pins inside each slot that serve as a clutch to secure the contacts of the
expansion board. For information on how to install the expansion boards, see
Chapter 2.
1.3.5 DRAM Sockets
The system board has four 72-pin SIMM sockets that allow you to expand
system memory to a maximum of 512 MB. These sockets accept both singledensity and double-density SIMMs. Chapter 2 tells how to install memory
modules and the different memory configurations available.
1.3.6 Second-level Cache
The AP53 motherboard comes with an onboard 256-KB pipelined-burst
second-level cache. This pipelined-burst cache improves system performance
by shortening the DRAM read prefetch time resulting to a faster data transfer
rate.
1.3.7 Two-channel PCI Mode 4 Enhanced IDE Interface
The AP53 board integrates a two-channel PCI mode 4 enhanced integrated
drive electronics (E-IDE) interface that allows the system to support four
E-IDE devices (including hard disks with more than 528-MB capacity) via two
onboard IDE connectors (see section 1.1). This feature offers users increased
data storage capacity.
1-5
Overview
1.3.8 Super I/O Controller
The onboard super I/O controller accommodates the following:
• Two UART 16450/16550-compatible fast serial ports
• A parallel port with standard parallel port (SPP), enhanced parallel port
(EPP) or extended capabilities port (ECP) support. Both the EPP and
ECP comply with the IEEE 1284 standards.
• 3.5-inch floppy disk drives with 720-KB, 1.44-MB or 2.88-MB format.
• 5.25-inch floppy disk drives with 360-KB, 1.2-MB format
1.3.9 Keyboard Connector
The onboard keyboard connector allows you to connect any AT-compatible
keyboard. See the board layout figure for the location of the keyboard
connector. Chapter 2 tells how to connect an AT keyboard.
A PS/2 keyboard connector is an option.
1.3.10 Mouse Connector
The board supports both serial and PS/2 mouse connectors. See Chapter 2 for
details on how to connect a serial and a PS/2 mouse connector.
1-6
Chapter 2
Hardware Installation
This chapter gives you a step-by-step procedure on how to install your system.
Follow each section accordingly.
2.1 ESD Precautions
Electrostatic discharge (ESD) can damage your processor, 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 ground strap and attach it to a metal part of the system unit
before handling a component. If a wrist strap is not available, maintain
contact with the system unit throughout any procedure requiring ESD
protection.
2-1
Hardware Installation
2.2 Jumper Locations
The following figure shows the locations of the jumpers on the system board:
2-2
2.3 Setting the Jumper
Set a jumper switch as follows:
• To open a jumper, remove the
jumper cap.
Hardware Installation
• To close a jumper, insert the plastic
jumper cap over two pins of a
jumper.
The conventions in the figure are used to
represent the proper jumper settings.
Open
Closed
-
2-3
Hardware Installation
2.4 Installing a Microprocessor
The motherboard comes with a zero-insertion force (ZIF) microprocessor
socket that allows you to install a CPU without using any tool.
Follow these steps to install a CPU into a ZIF-type CPU socket:
Make sure that the system power is OFF before
installing a component.
1. Locate the CPU socket on the
system board and pull up the socket
lever.
Hole 1
2. Gently insert the CPU. Make sure
that pin 1 of the CPU aligns with
hole 1 of the socket. The notched
corner on the CPU indicates the
location of pin 1.
3. Pull down the socket lever to lock
the CPU into the socket.
2-4
Pin 1 indicator
4. Attach the heatsink and fan to the
)
CPU.
5. Plug the fan cable onto the two-pin
fan connector onboard. The fan
connector is marked CN15 on the
system board.
Hardware Installation
GND
GND
2-pin fan power connector (J2
2-5
Hardware Installation
6. Set jumpers JP1 and JP10
according to the frequency of the
CPU that you install.
CPU FREQUENCY SELECT
JP1 JP10
75 MHz
90 MHz
100 MHz
(default)
120 MHz
133 MHz
150 MHz
166 MHz
7. Set jumper JP11 according to the
CPU voltage.
2-6
CPU VOLTAGE SELECT
JP11
3.45V
(default)
3.52V
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