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Hello,

> > Why do you think that ROM is already mapped into kernel address space?
> 
> I don't. But it was strongly implied by the fact that another user was able
> to dump the ROM from their Matrox video card on a macppc machine.
On macppc kernel virtual addresses are more or less physical addresses. 
Hmm, I always thought /dev/mem was for /physical/ memory, not kernel address space ( that's /dev/kmem, isn't it? ) so reading PCI_BASE+BAR_CONTENT should work.

have fun
Michael

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