mirror of
https://git.sr.ht/~rabbits/uxn
synced 2024-11-08 15:25:05 +00:00
35 lines
514 B
Text
35 lines
514 B
Text
( screen )
|
|
|
|
:dev/r fff8 ( std read port )
|
|
:dev/w fff9 ( std write port )
|
|
;width 2
|
|
;height 2
|
|
|
|
|0100 @RESET
|
|
|
|
( set read/write to dev/screen )
|
|
#01 DUP ,dev/r STR ,dev/w STR
|
|
|
|
( load screen size )
|
|
#00 IOR2 ,width STR2
|
|
#02 IOR2 ,height STR2
|
|
|
|
( draw pixel at screen center )
|
|
#0101
|
|
,width LDR2 #0002 DIV2
|
|
,height LDR2 #0002 DIV2
|
|
,putpixel JSR
|
|
|
|
BRK
|
|
|
|
|c000 @FRAME BRK
|
|
|
|
@putpixel
|
|
IOW2 ( y short )
|
|
IOW2 ( x short )
|
|
IOW ( color byte )
|
|
IOW ( redraw byte )
|
|
RTS
|
|
|
|
|d000 @ERROR BRK
|
|
|FFFA .RESET .FRAME .ERROR
|