Date: Thu, 1 Feb 1996 10:58:46 +1100 From: Bruce Evans <bde@zeta.org.au> To: hackers@FreeBSD.org, phk@critter.tfs.com Subject: Re: Watchdog timers (was: Re: Multi-Port Async Cards) Message-ID: <199601312358.KAA30850@godzilla.zeta.org.au>
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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
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