Date: Sun, 18 Feb 2001 10:34:15 +0100 From: Wilko Bulte <wkb@freebie.demon.nl> To: Warner Losh <imp@harmony.village.org> Cc: Luigi Rizzo <rizzo@aciri.org>, keichii@peorth.iteration.net, FreeBSD-hackers@FreeBSD.ORG, sos@FreeBSD.ORG Subject: Re: hotplug ata device? Message-ID: <20010218103415.B4042@freebie.demon.nl> In-Reply-To: <200102180224.f1I2O6W93349@harmony.village.org>; from imp@harmony.village.org on Sat, Feb 17, 2001 at 07:24:06PM -0700 References: <200102180220.f1I2KKR21592@iguana.aciri.org> <200102180224.f1I2O6W93349@harmony.village.org>
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On Sat, Feb 17, 2001 at 07:24:06PM -0700, Warner Losh wrote: > In message <200102180220.f1I2KKR21592@iguana.aciri.org> Luigi Rizzo writes: > : i actually wonder, aren't there removable disk frames which support > : hot swap (by turning off power with the keylock, or the like) ? > > I've not seen any, but I suppose they exist. The TAPR ones, however, > definitely are not those beasts. they are simple and don't support > hotswap. > > : Plus, it is actually curious that you can fry the IDE controller, > : the simplest ones used to be just a couple of '245 and an > : address decoder... > > I think that the main problem is lack of good grounding causing large > transients when the card is removed. But I could be wrong about > that. Each time I fried one it was definitely a remove + insert > sequence. Thanks for all the input :-) I will stop my hot-swap experiments here and now. To think that a few stupid TTL buffer chips would have made it possible to hotswap :-( W/ -- | / o / / _ Arnhem, The Netherlands email: wilko@freebsd.org |/|/ / / /( (_) Bulte http://www.freebsd.org http://www.nlfug.nl To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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