On 2013-05-04, at 20:46, Michał Pleban wrote: > But probably to use the $D012 register, you would need to turn the > display on - this is also possibly invasive. As Segher Boessenkool already mentioned - that one is always available for polling. No need to change or set anything up. Therefore counting 30 full rasters should be as easy as: ldx #$1e : bit SCROLY ; or even lda SCROLY bpl :- : bit SCROLY bmi :- dex bne :-- without any preparatory steps. And with a php/pla I can even test the I flag cheaply ;-) -- SD! Message was sent through the cbm-hackers mailing listReceived on 2013-05-05 11:00:34
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