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Graphics
Table D-9. Incremental (short) Vector Bytes
0
2
3
4
5
6
7
8
9
10
11
12
13
14
15
I
X
&
(
)
/
-16
-15
-14
-13
-12
- 1 1 - 10
-9
-8
-7
-6
-5
-4
-3
-2
- 1
0
2
3
4
5
6
7
8
9
Table D-IO. Graphics Control Sequences Used in Record Operations
Key
Sequence
Description
i -H-t
none
Graphics cursor controls
CURSOR FAST
none
Graphics cursor fast
G.CURSOR
Ec * dL
off
Ec * dK
on
G. DISPLAY
Ec * de
on
Ec * dD
off
G.CLEAR
Ec * dA
ALPHA DSPLY
Ec * dF
off
Ec * dE
on
Figure D-14 shows the sequences generated when drawing a simple box. The graphics cursor
is initially on and positioned at 0,0.
0~*P~13,213Z
o
~
*pa213 ,213 ,382 ,213Z
•
~ *p~382
,213 ,382, 189Z
o
~
*pa382, 189 ,213,1891
8
~ *p~
13 , 189 ,213 ,213Z
213,213
382,213
08
0
0
o
•
213,189
382,189
+8,8
Figure D-14. Displaying Graphics Sequences
D-36
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