Introduction; General; System Board; System Identification Number (Sin) - Mitsubishi Electric LS Pro Hardware Technical Reference

System Board

3.1

INTRODUCTION

General

This section describes the LS Pro system board and the operation of its processing
system and interface circuits.
The LS Pro range uses a highly integrated, IBM AT compatible system board. In addition
to standard features, the LS Pro system board provides: Ethernet interface, business
audio subsystem, LOC Technology security subsystem and a mouse port.
System Each system board fitted with the LOC Technology subsystem is identified by its own
Identification System Identification Number (SIN). During normal operation the SIN will never be
Number (SIN) required. Under certain circumstances the system may display a prompt asking for the
SIN to be entered. If this happens refer to the Owner's Handbook and associated
documentation. If Apricot's LOC Technology software is in use refer to the
documentation supplied with the software.
Major The following list of major components on the system board identifies the custom chips
components and briefly details their function:
1. Processor:
2. 4 Mbytes of RAM
3. 128 Kbyte ROM
4. VL82C311 (SCAMP) AT chipset
5. 8042 keyboard and mouse interface
6. CL-GD542X video controller with 1Mbyte of video RAM
7. 82596SX based Ethernet interface
8. 8051 based LOC Technology security feature
9. ATA compatible hard disk interface
10. 82077 based floppy drive interface
11. 16C452 based serial and parallel ports
12. Four SIMM sockets for memory expansion
13. 146818A Real Time Clock
14. Yamaha YMZ263 based business audio subsystem
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