Mylex MAE486 User manual

PREFACE
Thank you for your choice of a Mylex 486/EISA System Board
product. With proper installation and care, your Mylex System
Board will operate for years without any service requirement. This
manual will guide you in the installation process. The information
contained herein is subject to change without notice.
Mylex Corporation shall not be held liable for technical or editorial
omissions or errors made herein; nor for incidental or consequential
damages resulting from the furnishing, performance, or use of this
material.
This document contains proprietary information protected by
copyright. All rights are reserved. No part of this document may be
photocopied or reproduced by mechanical, electronic, or other
means in any form without prior written permission of Mylex
Corporation.
IBM is a registered trademark of International Business Machines Corporation.
Intel is a trademark of Intel Corporation.
Copyright 1990
by
Mylex Corporation
47650 Westinghouse Drive
Fremont, California 94539
Revision 1.0
Written and typeset by High-Tech Publications
Marc H. Fishel, wrltlng consultant
8780486005

Preface
This equipment generates, uses, and can radiate
radio frequency energy and, if not installed and
used in accordance with the instructions manual,
may cause interference to radio communications.
It has been tested and found to comply with the
limits for a Class Acomputing device pursuant to
Subpart J of Part 15 of FCC Rules, which are
designed to provide reasonable protection
against such interference when operated in a
commercial environment.
Operation of this equipment in a residential area
is likely to cause interference, in which case the
user, at his own expense, will be required to take
whatever measures may be required to correct
the interference.
Installation and Operation Guide
Ill

Table of Contents
Introduction I-l
Precautions
.....................
Handling the system board
.....
Unpacking and installing
......
Unpacking your components
...
What else you need
..............
Using this Guide .............
Conventions ..............
Contents .................
. . . .
. . . .
. .
. .
. .
. .
................
I-l
................ I-l
................I-l
................
I-2
................
I-2
................
I-3
................
I-3
................
I-3
Chapter 1, Product overview
MAE486 features .................
Microprocessor .............
BUS architecture
..........
On-board memory
..........
Memory cache .............
Shadow RAM ..............
Nonvolatile RAM
...........
Math coprocessor
...........
Jumpers ..................
Connectors ................
MBE486 features .................
Microprocessor .............
BUS architecture
..........
On-board memory
..........
Shadow RAM.. ............
Nonvolatile RAM
...........
Math coprocessor
...........
Jumpers ..................
Connectors ................
......................
l-l
...................... l-l
...................... l-l
...................... l-2
...................... l-2
...................... l-2
...................... l-2
...................... l-2
...................... l-3
...................... l-3
...................... l-4
...................... l-4
...................... l-4
...................... l-4
...................... l-4
......................
1-5
......................
1-5
......................
1-5
......................
1-5
Installation and Operation Guide

Table of Contents
Chapter 2, Configuring the MAE486
Jumper locations
.............................
Summary of jumper settings
...................
Jumper functions
.............................
External cache (Jl)
........................
Operating speed (521
......................
On-board system memory (53 through 512)
...
SIMM sockets NJ96 through U103)
..........
. . . .
. . . .
. . . .
. . .
. . . .
. . . .
. . . .
.2-l
.2-3
.2-4
.2-4
.2-4
.2-5
.2-6
Chapter 3, Connectors
Connector locations
...................
Connectors and pin assignments
........
Turbo light connector
.................
Keyboard IocWpower light connector
.....
Reset switch connector
................
Speaker connector
....................
. . . .
. . .
. . . .
. . . .
. . .
. . . .
. . . .
3-l
3-4
3-5
3-6
3-7
3-8
Chapter 4, Installation
Building a complete system
............................... .4-l
Precautions..............................................4- 2
Handling the system board
.........................
.4-2
Installing the system board
.........................
.4-2
Power supply
.....................................
.4-3
Uninstalled components
............................ .4-3
Installing system board components
........................
.4-3
Installing BIOS chips
.................................
.4-6
Installing a math coprocessor in the MAE486 ............. .4-7
Installing SIMM memory
.............................. .4-8
MAE486 memory configurations
.....................
.4-8
MBE486 memory configurations
..................... .4-8
Installing SIMMs
................................. .4-9
Installing the system board
..............................
.4-13
vi Installation and Operation Guide