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Coding > DMA during Halt?

#24797 - gb_feedback - Wed Aug 11, 2004 5:56 pm

Can anyone tell me definitively whether DMA continues during the state induced by SWI 2?
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http://www.bookreader.co.uk/

#24871 - gb_feedback - Thu Aug 12, 2004 8:16 pm

Surprising silence on this one!

Okay, I've tried it and the answer seems to be yes. So the next version of Bookreader will turn off the CPU between vertical Blank interrupts, even when playing midi files. I'll try to measure the actual battery current saving now, to see whether this is just a myth, or what.
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http://www.bookreader.co.uk/