[OpenBIOS] PCI setup code

Ronald G. Minnich rminnich at lanl.gov
Wed Mar 29 09:15:27 CEST 2000

On Wed, 29 Mar 2000, Marcus Gossner wrote:
> The IRQ assignment can't be done in the operating system. It depends on the
> wireing on your board and therefore it is done in BIOS. You can check the
> IRQ assignment with your original BIOS:

So I have to disagree. If the OS can figure out what motherboard it is,
then it ought to be able to do the assignment, since PCI int assignment is
known for a given motherboard. Or am I missing something (again) :-)? It
seems to me that all openbios has to do is communicate motherboard info to
the OS, and let the OS do the rest. BIOSes do a very poor job in interrupt
allocation anyway (as we have found the hard way out here -- we had one
COMPAQ motherboard that vectored everything to IRQ11 for very bad reasons)

But thanks, I will take a look at this.


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