Mitsubishi Electric Apricot LS Pro, Hardware Technical Reference

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Chapter 1
Chapter 2
Chapter 6
Contents
Chapter 3
Chapter 5
Preface
LS PRO HARDWARE TECHNICAL REFERENCE 1
Pr
eface
The Apricot LS Pro Technical Reference Manual is intended for:
Programmers and engineers involved in hardware and software design for LS Pro
computers.
Service personnel involved in fault diagnosis and repair.
All computers in the Apricot LS Pro range are covered.
The manual is divided into a number of sections and appendices as described below:
1. Introduction This is a brief overview of the Apricot LS Pro which describes the options and major
components of the system.
2. System Unit This section describes the system unit: it also includes disassembly instructions for
servicing and replacing major components of the system. It includes pinouts of the
connectors which appear on the rear of the system unit.
3. System Board This section provides an overview of the function of the system board and more
detailed descriptions of the processor and interface circuitry. Sub-sections provide a
description of each area of the board.
4. Peripheral This section describes each of the system components which attach to either the
Items system board e.g. floppy disk drive, or system unit e.g. keyboard. Also included is brief
information on the Key
LOC
card. Sub-sections describe each component.
5. Memory and This section provides information on the usage of Memory and I/O space by
I/O space the LS Pro system board, and programming information for each part of the system.
Appendices Three appendices are included:
Appendix A
This contains specifications for each component of Apricot LS Pro computers.
Appendix B
This appendix describes the differences between the revision C system board and the
revision D system board described in section 3.
Appendix C
A list of error beep codes.