ASTRO VG-871 - GELPSPA [D8 H]: Filled-In Ellipse Drawing; CELPSPA [D9 H]: Filled-In Ellipse Clearing

Chapter 5 INDIVIDUAL DRAWING COMMAND FORMATS
447
5.16 GELPSPA [D8H]: Filled-in ellipse drawing /
CELPSPA [D9H]: Filled-in ellipse clearing
5.16.1 GELPSPA [D8H]: Filled-in ellipse drawing
Function: This command draws a filled-in ellipse on the graphic plane (1-bit plane).
The center coordinates and radii of the ellipse are designated by the
parameters.
Sequence: Type 2
Command:
STX
1 byte
02H
GELPSPA, CELPSPA
1 byte
D8H, D9H
Center coordinate X
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 coordinate Y
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 RX
1 to 4 bytes
“1” to “4095”
Data delimiter
1 byte
“, “
Radius RY
1 to 4 bytes
“1” to “4095”
ETX
1 byte
03H
Fig. 5-16-1