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Re: PCI I/O space on DEC Alpha machines



> >  Also what if your
> >  PWB ends up in an Alpha, Power PC, etc.  These *real*
> >  computers don't have IO space and everything ends up
> >  in memory space anyways.

> Alpha machines do have I/O space (PCI I/O space, that is),
> they just don't have I/O instructions.

Ditto on PowerPC machines.  The only difference between accessing
I/O space and memory space on PCI adapters in a PPC box is OR'ing
a flag in the PCI access routines.

Richard Masoner