I've wondered this a while and it seems like it would make sense for
Uni-processor boards to use an IO-APIC also. Lots of people have had
trouble with sharing IRQs/etc and IO-APIC is a lot more elegant than
the age old XT pic on most boards. Is it just a matter of cost? Does
Intel's IO-APIC chip carry a cost they don't want to carry?
Personally, I think I'd buy a uni-box with an IO-APIC, it would
certainly help bang out some bugs because SMP boxes are still somewhat
rare.
Anyway, it might not be on topic but it's been fermenting in my mind
for a little while now.
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