ASTRO VG-870, Instruction Manual

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Chapter 5 INDIVIDUAL DRAWING COMMAND FORMATS
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5.17 G8CIRC [E0H]: Circle drawing (color designation)
G8CIRCPA [E6H]: Filled-in circle drawing
(color designation)
5.17.1 G8CIRC [E0H]: Circle drawing (color designation)
Function : This command draws circles on the color bar plane (8-bit plane). The center
coordinates and radius and color of the circle are designated by the parameters.
Sequence : Type 2
Parameter :
STX 1 byte 02H
G8CIRC 1 byte E0H
Center X coordinate 2 to 5 bytes
Sign code + “0” to “4095” e.g. 100

“0100”
Sign code: “0” = +, “1” = -
*-
2048 (“12048”) to +4096 (“04095”) in numerical terms
Data delimiter 1 byte
“,”
Center Y coordinate 2 to 5 bytes
Sign code + “0” to “4095” e.g. 100  “0100”
Sign code: “0” = +, “1” = -
*-
2048 (“12048”) to +4096 (“04095”) in numerical terms
Data delimiter 1 byte
“,”
Radius 1 to 4 bytes
“1” to “4095”
Data delimiter 1 byte
“,”
Color 1 to 3 bytes
“0” to “255”
ETX 1 byte 03H
Fig. 5-17-1