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Old 09 June 2021, 19:16   #121
phx
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Quote:
Originally Posted by ross View Post
Different possibilities:
- copper, but you need to be the first routine in VBI or you call for problem
True. Especially when the whole game engine runs in VBI.

Quote:
- a CIA IRQ , which, however, would not be invasive because it is linked to the VBI
Which means I would set up TimerB interrupts for writing DMACON/AUDxLC exactly like I do now, but from a level-3 instead of a level-6 interrupt?
Can be done, but if I really do the VBI option I would not want to use a second interrupt vector.

Quote:
- next VBI, but you would have the same problems as p61
Yes. Should be avoided.

(Currently this discussion has not much to do with Blitz Basic. Sorry for that.)
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Old 09 June 2021, 19:28   #122
ross
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Quote:
Originally Posted by phx View Post
Which means I would set up TimerB interrupts for writing DMACON/AUDxLC exactly like I do now, but from a level-3 instead of a level-6 interrupt?
Can be done, but if I really do the VBI option I would not want to use a second interrupt vector.
Yes, a set up for a timed IRQ6 inside the IRQ3.
The alternative is a delay by "raster lines count"..

(promised, last derail for the thread sorry)
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Old 10 June 2021, 02:41   #123
neumanix
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Thanks for the help guys. As the noob I am, I didn't realize the wait for line $96, caused it Commented that out and it runs just fine with music.
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