Quote:
Originally Posted by ross
Well, alternating lines are neutral in regard to your phase shift, only CCK is significant. Or I'm missing something?
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Well, it's about the way I am synching the channels.
The current idea I am working on is:
1) find a vposr/hvposr nearby that we will use to start the whole thing
2) precalculate vposr/hvposr for all the next steps knowing the delays we want to have
3) vposr/hvposr wait to: start up the dma
4) vposr/hvposr wait to: stop the dma when we started playing the 2nd sample from the first pair
5) vposr/hvposr wait to: write to channel 0 when all of the channels are on idle
6) vposr/hvposr wait to: write to channel 1 at 90 degrees
7) vposr/hvposr wait to: write to channel 3 at 180 degrees
8) vposr/hvposr wait to: write to channel 2 at 270 degrees
9) fire up the audio DMA again
So the uneven scanlines are a problem, yes.