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Radio Shack Quick Printer II Operation Manual

Radio Shack Quick Printer II
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Page #111 background image
computer
Graphics
Operation
Manual
TRS-BO®
r--
JJ99
POP
HL
1~~
XOR
A
1~1
RET
1~2
X
EQU
80'H
1~3
y
EQU
81H
1~4
GRAPH
EQU
82H
1~5
STATUS
EQU
83H
1~6
MASK
DEFB
80'H
iMask
to
use
in
extracting
bits
1~7
BGMODE
DEFB
12H
iControl
byte:
start
graphics
mode
1~8
BUFFER
DEFS
24~
iPrinter
data
buffer
10'9
EGMODE
DEFB
lEH
iControl
byte:
end
graphics
mode
110'
BPOS DEFB
0'
iBit
position
in
printer
buffer
III
XLOC
DEFB
0'
iCurrent
X
location
value
112
i
113
i
114
.
INITG
--
Initialize
Model
III
Graphics
Board
,
115
.
,
116
INITG
LD
A,l~H
117
OUT
(236)
,A
iTurn
on
port
118
LD
BC,15
119
LD
HL,DATA
12~
LOOP
LD
A,B
iProgram
CRTC
chip
for
80'
by
24
121
OUT
(136),A
122
LD
A, (HL)
123
OUT
(137)
,A
,,---"
124
INC
HL
125
INC B
126
LD
A,B
127
CP
C
128
JR
NZ,LOOP
129
RET
13~
DATA
DEFB
99
131
DEFB
8~
132
DEFB
85
132
DEFB
8
133
DEFB
25
134
DEFB
4
135
DEFB
24
136
DEFB
24
137
DEFB
JJ
138
DEFB
9
139
DEFB
~
14JJ
DEFB
0'
141
DEFB
0'
142
DEFB
0'
143
DEFB
0'
144
DEFB
0'
145
146
END
GPRINT
,~
Itadlelllaell
-81-

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Radio Shack Quick Printer II Specifications

General IconGeneral
BrandRadio Shack
ModelQuick Printer II
CategoryDesktop
LanguageEnglish

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