From owner-freebsd-hackers  Wed Mar 20 19:30:24 1996
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To: hackers@freebsd.org
Subject: real time interrupts in FreeBSD?
Date: Wed, 20 Mar 1996 19:30:14 -0800
From: Paul Traina <pst@shockwave.com>
Sender: owner-hackers@freebsd.org
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I've got a need for a kernel driver to go to sleep for a number of MS
and then be awoken by an interrupt.  Timing is critical, so I can't just
tsleep and get rescheduled later, and I don't have hardware of my own to
generate the interrupt.

Therfore, I need to get a free CTC register, program it up, and have it
generate an interrupt that I can service in the device driver.

Does anyone have any suggestions/ideas/help/pointers on how to do this.
I've never done this kind of stuff with PC hardware before, so I don't
even know where to start looking.

Thanks,

Paul