Radio Shack CCR-81 Operation Manual

computer Graphics
Operation Manual
TRS-eO®
.~
~99 OPNFLG
DEFB
1
1~~
DCBEE
DEFS
5~
1~1
BUFFER
DEFS
256
1~2
i
1~3 INITG --
Initialize
Model III Graphics
Board
1~4
1~5
INITG
LD
A,l~H
1~6
OUT (236),A
iTurn on port
1~7
LD
BC,15
1~8
LD
HL,DATA
1~9 LOOP
LD
A,B
iProgram
CRTC
chip for 8~ by 24
11~
OUT (136) ,A
III
LD
A, (HL)
112
OUT (137),A
113
INC
HL
114
INC
B
115
LD
A,B
116
CP
C
117
JR
NZ,LOOP
118
RET
119
DATA
DEFB
99
12~
DEFB
8~
121
DEFB
85
122
DEFB
8
123
DEFB
25
124
DEFB
4
125
DEFB
24
126
DEFB
24
127
DEFB
~
128
DEFB
9
129
DEFB
~
13~ DEFB
~
131
DEFB
~
132
DEFB
~
133
DEFB
~
134
DEFB
~
135
136
END
GLOAD
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Radio Shack CCR-81 Specifications

General

Brand	Radio Shack
Model	CCR-81
Category	Desktop
Language	English