Date: Fri, 2 Feb 1996 12:02:26 +1030 (CST) From: Michael Smith <msmith@atrad.adelaide.edu.au> To: jkh@time.cdrom.com (Jordan K. Hubbard) Cc: dgy@rtd.com, freebsd-hackers@freefall.freebsd.org Subject: Re: Watchdog timers (was: Re: Multi-Port Async Cards) Message-ID: <199602020132.MAA25664@genesis.atrad.adelaide.edu.au> In-Reply-To: <4664.823163192@time.cdrom.com> from "Jordan K. Hubbard" at Feb 1, 96 00:26:32 am
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Jordan K. Hubbard stands accused of saying: > > Actually, I kind of liked the idea of letting it grab ahold of the > bus. It seems that a lot of problems one runs into in PCs these days > stem from individual cards or chipsets not *quite* playing by the > rules, and at times like that you really do want to watch every IRQ > line and have little service routines that are called when one changes > state, or whatever. It's the only way to tell if someone's bogusly > generating an interrupt, or to generate one yourself if you're trying > to simulate some weird peripheral. Eww! I can just see it now; it occupies three slots, is covered with surface-mount ECL parts and radiates enough heat to be illegal in Eskimo dwellings 8) > I can also see where maybe you just want to design a dumb card that > enables one PC to take over another. Then your PC on a card can just > be a PC on a PC. :-) All the intelligence would be in the device > driver. No can do. Think about the address buffers for example. > Jordan -- ]] Mike Smith, Software Engineer msmith@atrad.adelaide.edu.au [[ ]] Genesis Software genesis@atrad.adelaide.edu.au [[ ]] High-speed data acquisition and (GSM mobile) 0411-222-496 [[ ]] realtime instrument control (ph/fax) +61-8-267-3039 [[ ]] "wherever you go, there you are" - Buckaroo Banzai [[
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