41 lines
532 B
Plaintext
41 lines
532 B
Plaintext
( mouse )
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:dev/r fff8 ( std read port )
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:dev/w fff9 ( std write port )
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|0100 @RESET
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,02 ,dev/r STR ( set dev/read mouse#02 )
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,01 ,dev/w STR ( set dev/write screen#01 )
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BRK
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|c000 @FRAME
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( get mouse button, or break )
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,04 IOR
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,01 NEQ
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BRK?
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( paint a white pixel )
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,01 ,01
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,getmouse JSR
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,putpixel JSR
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BRK
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@getmouse
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,00 IOR2 ( get mouse x )
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,02 IOR2 ( get mouse y )
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RTS
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@putpixel
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IOW2 ( y short )
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IOW2 ( x short )
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IOW ( color byte )
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IOW ( redraw byte )
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RTS
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|d000 @ERROR BRK
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|FFFA .RESET .FRAME .ERROR
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