Radio Shack TRS-80 Operation Manual page 123

Computer Graphics Operation Manual
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PRESETC1~~,1~~),~
PRINT #-3, item list Write text characters to the
Graphics Screen.
PRINT #-3, "MONTHLY"
PSETC~),switch
Sets pixel ON or OFF.
PSET
(1~~
,
l~~
) ,1
PUT(xl,yl),array name,action
an array onto the screen.
PUTC1~~,1~~),A,PSET
PUTCA,B),B
Puts graphics from
PUTC1~~,1~~),A,AND
SCREEN ~
SCREEN ~
Selects the screen.
VIEW(xl,yl)-(x2,y2),£,b Redefines the screen and
creates a viewport.
VIEWC1~~,1~~)-C15~,15~) VIEWC1~~,1~~)-C15~,15~),~,1
&VIEW(£) A function. Returns viewport's coordinates.
PRINT
&
VIEW
(1 )
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