From owner-freebsd-hackers  Fri Jul  9  1:35:50 1999
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To: phk@critter.freebsd.dk (Poul-Henning Kamp)
Cc: hackers@freebsd.org
Subject: Re: Rewriting pca(4) using finetimer(9) (was: Re: MPU401 now worksunder New Midi Driver Framework with a Fine Timer)
References: <86k8sajlmz.fsf@not.demophon.com> <2231.931507837@critter.freebsd.dk>
From: Ville-Pertti Keinonen <will@iki.fi>
Date: 09 Jul 1999 11:30:53 +0300
In-Reply-To: phk@critter.freebsd.dk's message of "9 Jul 1999 11:13:07 +0300"
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phk@critter.freebsd.dk (Poul-Henning Kamp) writes:

> But shouldn't you still be able to use the timer in the local apic ?

Did you read the last paragraph in my message?

Here it is again:

> >It's been a while since I looked at the documentation, but it *might*
> >be possible that the local APIC timers would work without using APIC
> >interrupt routing.  IIRC the timers are simply programmed with the IDT
> >vector number to generate as an interrupt.

I haven't tried it, I don't know what would happen.  If someone else
knows (or has a chance to try it soon), please comment.

Even if it works, using the feature would probably have to rely on
undocumented behavior.


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