Radio Shack CCR-81 Operation Manual

Computer Graphics
TRS-aO®
Operation Manual
~
~99
YPOS
DEFB
~
1~~
OPNFLG
DEFB
1
1~1
DCBEE
DEFS
5~
1~2
BUFFER DEFS
256
10'3
·
INITG --
Initialize
Model III Graphics
Board
,
10'4
·
,
'1~5 INITG
LD
A,l~H
1~6
OUT
(236),A
;Turn on
port
1~7
LD
BC,15
1~8
LD HL,DATA
1~9
LOOP
LD A,B
;Program 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
GSAVE
---------Itadlolllaell---------
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Radio Shack CCR-81 Specifications

General

Brand	Radio Shack
Model	CCR-81
Category	Desktop
Language	English