Re: PCI IO range limitation

Define "legacy device"? What should that entail? You mean like mapping
most of those registers to the first couple of kilobytes of "IO"?

Anything that hard-decodes IOs in the low ISA range yes. That includes
VGA video cards.

If they're just left as their own on their own as PCI devices, why would
it matter what the window was?

Because quite a few of those things hard decodes (can't be moved around,
so -have- to be able to generate cycles to those low addresses to hit
them) and sometimes don't even fully decode the 32 bits addresses
(though that's more rare).

For example, a VGA video card in text mode hard decodes both IO and
Memory at the legacy VGA ranges.

Ben.