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GSX-86: Graphics for the APe
Table 9-2 GDOS Opcodes
9-12
OPCODE
DESCRIPTION
I
Open workstation
2
Close workstation
3
Clear workstation
4
Update workstation
5
Escape
Jd Definition
I Inquire addressable character cells
2 Enter graphics mode
3 Exit graphics mode
4 Cursor up
5 Cursor down
6 Cursor right
7 Cursor left
8 Home cursor
9 Erase to end of screen
10 Erase to end of line
II Direct cursor address
12 Output cursor addressable text
13 Reverse video on
14 Reverse video off
15 Inquire current cursor address
16 Inquire tablet status
17 Hard copy
18 Place cursor at location
19 Remove cursor
6
Polyline
7
Polymarker
8
Text
9
Filled area
10
Cell array
II
Generalized drawing primitive
12
Set character height
13
Set character up vector
14
Set color representation
15
Set polyline linetype
16
Set polyline linewidth
17
Set polyline color index
18
Set polymarker type
19
Set polymarker scale
20
Set poly marker color index
21
Set text font
22
Set text color index
23
Set fill interior style
24
Set fill style index
25
Set fill color index
26
Inquire color representation
27
Inquire cell array
28
Input locator
29
Input valuator
30
Input choice
31
Input string
32
Set writing mode
33
Set input mode
Y - Required for CRTs, printers, and plotters
C - Required for CRTs only
REQUIRED
Y
Y
y
Y
y
C
C
C
C
C
C
C
C
C
C
C
C
Y
Y
y
Y
Y
Y
Y
Y
y
Y
Y
y
y
y
Y
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