> Quoting James Stevenson <james@stev.org>:
>
> >
> > alot depends greatly on the hardware and how much data
> > has to be transfered.
>
> >
> > But quite often if DMA fails for some reson it will
> > try to fall back to PIO something working slowly
> > can be better than not working at all.
> Is it always useful (even for the small data transfer) to use DMA ?
for small transfere it can have the same over head to set up
the dma transfere as it does to transfere the data in a case
like this there it no point in using DMA
James
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