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Atari coding BBS
| Re: Drive select 0 / D0SEL |
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Posted by: Fredrik Olsson
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Sep,24.2013-14:04
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You'll just have to make sure that the motor has stopped before you start your tampering. Something like:
fdc_busy: ; Wait for last instruction to finish
move.w $fffffa01,d0
btst #0,d0
bne fdc_busy
loop: ; Wait for motor to stop
move.w #$180,$ffff8606
move.w $ffff8604,d0
btst #7,d0
bne loop
time_to_flash_the_led:
...
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