Date: Tue, 29 Jul 1997 08:52:25 -0400 (EDT) From: Jamie Bowden <jamie@itribe.net> To: FreeBSD Development <freebsd@atipa.com> Cc: John Kelly <mouth@ibm.net>, hackers@freebsd.org, Terry Lambert <terry@lambert.org> Subject: Re: Sharing interrupts Message-ID: <199707291249.IAA13511@gatekeeper.itribe.net> In-Reply-To: <Pine.BSF.3.91.970728211925.25478B-100000@dot.ishiboo.com>
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On Mon, 28 Jul 1997, FreeBSD Development wrote: > > > On Tue, 29 Jul 1997, John Kelly wrote: > > > On Mon, 28 Jul 1997 10:38:32 -0700 (MST), Terry Lambert wrote: > > > > > You can not share interrupts with ISA cards. Period. > > > You can share interrupts, but not use both SIMULTANEOUSLY. A very good > example would be to have LPT1: and a sound card on IRQ7 (both ISA). As > long as they have unique base addresses (0x378h and 0x220 for instance), > both devices can coexist. You just can't use them at the same time > without conflicting. Sharing IRQs is definitely not recommend, but I believe > your statement may require a bit more qualifying. I wouldn't call what you describe sharing an interrupt. I would compare it to sleeping with someone's girlfriend and hoping they don't happen to try sleeping with her at the same time, cause who the hell knows what will happen then (of course, this breaks down at this point, due to the fact that some people don't mind sharing. Your hardware is about as forgiving as an old New England WASP). Jamie Bowden System Administrator, iTRiBE.net
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