Radio Shack TRS-80

Computer Graphics Operation Manual
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GET(xl,yl)-(x2,y2),array name Reads the contents
of a rectangular pixel area into an array.
GET(1~,1~)-(5~,5~),V
GLOAD filename/ext.password:d Loads graphics
memory.
GLOAD PROG CMD "I","GLOAD PROG"
GLOCATE (~),direction Sets the Graphics Cursor
GLOCATE (32~,12~),j
GPRINT Dumps graphic display on the printer.
GPRINT CMD "I", "GPRINT" l~~ CMD "I", "GPRINT"
GPRT2 Dumps graphic display on the printer without
rotating 9~ degrees.
GPRT2 CMD"I", "GPRT2" l~~ CMD"I", "GPRT2"
GPRT3 Dumps graphic display on the printer without
rotating 9~ degrees.
GPRT3 CMD"I", "GPRT3" l~~ CMD"I", "GPRT3"
GROFF Turns Graphic Display OFF.
GROFF CMD "I","GROFF"
GRON Turns Graphic Display ON.
GRON CMD" I" , "GRON"
GSAVE fi1ename/ext.password:d Saves graphics
memory.
GSAVE PROG CMD "I","GSAVE PROG"
Draws a
PAINT(!LY),ti1ing,border,background Paints the
screen.
PAINT(32~,12~),1,1 PAINT(32~,12~),"DDDDD",1
PAINT(32~,12~),A$,1
PAINT(32~,12~),CHR$(~)+CHR$(&HFF),~,CHR$(&H~~)
PAINT(32~,12~),CHR$(E)+CHR$(77)+CHR$(3)
&POINT(~) A function. Tests graphics point.
PRINT &POINT(32~,12~) IF &POINT(32~,12~)=1 THEN •..
PRINT &POINT(32~,12~),-1
PRESET(~),switch Sets pixel OFF or ON.
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