Sharp MZ-800 Technical Reference And User's Guide

CONTENTS
MZ-800 HARDWARE
1 System description · ·· · ·· · ·· · ·· ·· ··· · · · · · ·· ··· · ·· · ·· · ·· ·· · · · · ·· ··· ·· · · · ·· ···· · · · · · · ·· · · · · ·· · · · ·· · · ·· · · · · ·· 1
2 Block
diagram
2
3 Memory map ······ ··············· ········· ································································ ·· 3
4
Custom LSI ·• · ··· ·· · · · · ·· ·· ··· · · ··· · ·· ··· ·· · ·· · ···· ·· ·· ··· · · ······· ·· ·· · ·· · ·· ··· · · · · ·· ·· · ·· ·· · · ·· · ··· · ·· · · · · ·· 6
4-1 Memory controller ····························································································· 6
4-2
1/0 controller ··························· ······························································· ··· ······ 6
4-3
Clock generator and timing generator ··········· ....................................... ······· ···· ·· 9
4-4 Display address generator
··· ··· ········· ················ ················· ··························· ······ 9
4-5
Scroll · · · · · ··· · · · · ·· · · · · ··· · · · · · · ·· · · ·· · · · · · · · · ·· · · · ·· · · · · · · · · · · · · ·· · · · · · · · · · · · · · ·· · · · · · ·· · · · · · ·· ··· · · · · ·· · · · · · · ·· · · · 10
4-6 VRAM data input/output circuit ··············· ········· · ·· ········· ············ ············ ······· ····· 12
4-7 Register functions
···········································································-················· 17
4-8
Pallet ····································································································-···-·-· 22
4-9
CRTC register map ··································-······················································· 23
4-10 ROM configuration ·························································································· 24
5 8255 Programmable Peripheral Interface ......................................................... 24
6 8253 Programmable Interval Timer ······················· ····· ···················· .................. 28
7 Printer interface ·································································· ··························· 28
8 Programmable sound generator ····································································· 31
9 Joystick ···· · · ·· ··· ·· ·· ·· · ·· · · ·· ····· · · ······ ·· ······ ····· ·· · ··· ··· ···· · ·· · ·· · · ··· · · · · · ·· ·· ··· ······ · · ·· · · · ··· 32
1
0 Power supply · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 33
10-1 Block diagram ································································································ 33
10-2 Operational description ············-·····························-········································· 34
10-3 Maintenance ··································································································· 34
10-4 Problem determination and sequence ········ ··························· · ························ ······ 34
11 MZ-1P16 ··································································································· 35
11-1
Installation ······································································································ 35
11-2
Block· diagram ................................................................................................ 36
11-3 At power
on ··································································································· 36
11-4
Colour change operation ···················································································· 36
11-5
Pen change operation ······················································································· 36
11-6
Pen exchange method ······················································································· 37
11-7 Stepping motor driving signal
··········································································· 37
11-8 Colour position detector
···················································································· 37
11-9 Character set
··································································································· 37
11-10 Colour plotter printer control LSI ········································································ 38
11-11 Interfacing with the MZ-800 ·············································································· 39
11-12
Block diagram ................................................................................................ 39
11-13
Colour plotter printer control codes ····································································· 40
11-14 Graphic mode commands ················································································· 41
11-15 Specification ··································································································· 42
11-16 Circuit
············································································································ 42
12 CPU P.W.B. Circuit ······················································································· 43
ii

Sharp MZ-800 Specifications

General

Brand	Sharp
Model	MZ-800
Category	Desktop
Language	English