ASTRO VG-870, Instruction Manual

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Chapter 5 INDIVIDUAL DRAWING COMMAND FORMATS
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5.3 GLINE [19H]: Straight line drawing /
CLINE [13H]: Straight line clearing
5.3.1 GLINE [19H]: Straight line drawing
Function: This command draws a straight line on the graphic plane (1-bit plane).
The start and end point coordinates are set by the parameters.
Sequence: Type 2
Command:
STX 1 byte 02H
GLINE, CLINE 1 byte 19H, 13H
Start point 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
“, “
Start point 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
“, “
End point coordinate X 1 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
“, “
End point coordinate Y 1 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
ETX 1 byte 03H
Fig. 5-3-1
* Sign codes are provided.