Table of Contents
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2.1 Introduction
The basic system includes:
+ + £ © ££ & £
Main board assembly,.
Power board assembly,
Keyboard assembly,
Floppy disk drive,
Hard disk drive,
LCD assembly,
Main battery
Adapter.
2-1
2.2. Main board
The main board compromises the following > gic:
System logic (HT-21)
ROM (Read Only Memory)
The ROM BIOS consists of one 128 x 8 bit EPROM mo-
dule.
RAM (Random Access Memory)
The 1 MB on board standard RAM is factory installed.
Real Time Clock Generator (DS-1287)
Keyboard Controller & Encoder (8042 & 80C51)
Controller is the 8042 and encoder is 80051
LCD/CRT Controller Interface (CL-GD 610, 620)
Parallel Port & Serial Port interface (82C601)
Floppy disk interface (8473)
CS 55 798
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