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Posted By

Csabo
on 2004-05-30
09:34:02
 Re: Keyboard handling

The keyboard matrix is also here: [ link ]. A basic routine that would wait until space is pressed would be:

*
LDA #$7F ; Check column 7
STA $FD30 ; Keyboard Matrix
STA $FF08 ; Keyboard Latch
LDA $FF08 ; Keyboard Latch
AND #$10 ; Query keyboard for "Space"
BNE *



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