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Re: iBook and playing DVDs



On Sun, 2002-05-19 at 23:45, Albert D. Cahalan wrote:
> 
> >>> Using an interrupt might help there.
> >> 
> >> 	I don't understand this, sorry. :-)
> > 
> > The chip could issue an interrupt when the DMA transfer is complete so
> > the CPU could do something useful while it's in progress.
> 
> Then you suffer interrupt overhead. You should be able
> to do something useful while you wait, polling when you
> expect the DMA to be about done.

If it was that easy, it would already be done... Doesn't sound like you
are familiar with the situation we're discussing.


-- 
Earthling Michel Dänzer (MrCooper)/ Debian GNU/Linux (powerpc) developer
XFree86 and DRI project member   /  CS student, Free Software enthusiast


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