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ASTRO VG-871 - CHACIRCPA4 [28 H 26 H]: Character Plane Filled-In Circle Drawing

ASTRO VG-871
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Chapter 4 INDIVIDUAL FORMATS FOR CONTROL COMMANDS
303
3.7 CHACIRCPA4 [28H 26H]: Character plane filled-in
circle drawing
Function: This command draws a filled-in circle on the character plane.
Sequence: Type 2
Command:
STX
1 byte
02H
VG4CMD
1 byte
FDH
CHACIRCPA4
2 bytes
28H 26H
Center X coordinate
2 to 5 bytes
Sign code + “0” to “4095”
Sign code: “0” = +, “1” = -
* -2048 (“12048”) to +4096 (“04095”) in
numerical terms
,
1 byte
2CH (Delimiter)
Center Y coordinate
2 to 5 bytes
Sign code + “0” to “4095”
Sign code: “0” = +, “1” = -
* -2048 (“12048”) to +4096 (“04095”) in
numerical terms
,
1 byte
2CH (Delimiter)
Radius
1 to 4 bytes
“1” to “4095”
,
1 byte
2CH (Delimiter)
Drawing mode
1 byte
“0” = Clear, “1” = Set
ETX
1 byte
03H
Fig. 3-7-1
When the drawing mode setting is omitted as below, the dot is drawn in the Set mode.
STX
1 byte
02H
VG4CMD
1 byte
FDH
CHACIRCPA4
2 bytes
28H 26H
Center X coordinate
2 to 5 bytes
See above figure.
,
1 byte
2CH (Delimiter)
Center Y coordinate
2 to 5 bytes
See above figure.
,
1 byte
2CH (Delimiter)
Radius
1 to 4 bytes
“1” to “4095”
ETX
1 byte
03H
Fig. 3-7-2

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