> > > The global "wheee I'm a poor and can't afford 32 bit IO" option will remain
> > > there of course.
> > >
> > > So we have no issue here. OK?
>
> What if the user doesn't know the precise innards of their hardware. IDE
> more than anything else has to automagically do the right thing. Given the
> size of the PIO transfer loop and the way for some boards its weirdly
> dependant on hardware magic and wonder is there any reason for not just
> making the host controller provide the function or reference an ide library
> function for "sane" hardware ?
You are making a nice case to not set 32-bit for PIO.
I never run 32-bit PIO in development because of the false results you end
up seeing.
For the formal record: The ATA interface data transfers are done 16-bits
(2 bytes) at a time in PIO and DMA.
PERIOD!
Andre Hedrick
LAD Storage Consulting Group
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