Overlaping IO resource for AMD K8

[Ronald G. Minnich]

> It is weird that fuctory bios can still use them.

There's gotta be a hack in fuctory bios, I would guess, something like: 
if (the pci card is a vga && there is an option rom)
	callit();

i.e. I betcha that fuctory bioses will call an option rom on vga even if 
it violates the spec. 

I wonder if we really want to do this, the S3 cards are antiques anyway.

ron