From owner-freebsd-hackers  Wed Jan 31 16:08:22 1996
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Date: Thu, 1 Feb 1996 10:58:46 +1100
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199601312358.KAA30850@godzilla.zeta.org.au>
To: hackers@FreeBSD.org, phk@critter.tfs.com
Subject: Re: Watchdog timers (was: Re: Multi-Port Async Cards)
Sender: owner-hackers@FreeBSD.org
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>	The "FreeBSD gadget":

...

>		10, 100 or 250 Mhz timer, with readable count,
>		generates IRQ 20/100/250 (jumper) times a second.
>		(For microtime)  (Maybe even with a 10/11 swallow
>		counter along the lines the XNTP people suggest.)

		64-bit readable count with fast (32-bit) access.
		Single programmable IRQ - interrupt when count
		reaches a programmable value.

...

Bruce