> i guess part of the picture is cost, but also the fact that 1) Windows
> doesnt use the IOAPIC at all 2) NT uses it only in SMP mode, just like
> Linux. Why build hardware at a higher cost that no OS supports?
OK. That's a valid point. It might be overkill for a single processor.
I guess I just have a fixation for IRQs above 15 :)
> IOAPIC from SMP about a year ago already - some of the SGI VisWS boxes
> were UP but used an IOAPIC.
OK.. so SGI kinda-sorta thinks like me.
Maybe they'll integrate the IOAPIC into newer chipsets.. that would negate
the need for an extra chip.
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