Messages in this thread | | | Date | Wed, 23 Feb 2000 17:43:49 -0500 | From | "Theodore Y. Ts'o" <> | Subject | Re: APIC and some timers stuff |
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Date: Wed, 23 Feb 2000 17:48:55 +0100 From: Vincent Oberle <vincent.oberle@hadiko.de>
A good idea seem to use the Pentium local APIC's programmable timer (I know Ingo is working on that). But unfortunately, the APIC seems to be disabled on most UP motherboards. Does someone knows MBs with the APIC enabled? Does somebody have programming experience with the APIC? Some docs? Any other suggestion are welcome.
It's not that the APIC is disabled on most UP motherboards; it's not there at all. APIC's are expensive, so on motherboards where it's not necessary (since all OS's have to have 8259 PIC support anyway) most UP chipsets only provide a PIC which 8259 compatible. It's not that you *can't* put an APIC on a UP machine, it's just that in practice most MB manufacturer's don't, for cost reasons.
- Ted
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