Date: Wed, 25 Feb 1998 15:15:51 -0800 (PST) From: Simon Shapiro <shimon@simon-shapiro.org> To: Tom <tom@uniserve.com> Cc: freebsd-current@FreeBSD.ORG, Kingson Gunawan <kingson@excite.com> Subject: Re: Help needed with DPT card + Asus M/B Message-ID: <XFMail.980225151551.shimon@simon-shapiro.org> In-Reply-To: <Pine.BSF.3.96.980225085530.18179A-100000@shell.uniserve.com>
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On 25-Feb-98 Tom wrote: > > On Wed, 25 Feb 1998, Simon Shapiro wrote: > >> On 25-Feb-98 Tom wrote: >> > >> > On Tue, 24 Feb 1998, Simon Shapiro wrote: >> > >> >> That is not it. Unless some other driver is stealing the PCI >> >> interrupt >> >> (which I do not know how to do with PCI). >> > >> > Unless it is a silly ISA device... >> >> True only if the MB allows interrupts to be shared between ISA and PCI, >> which it should not. Kingston reports that Win95 works on that MB, with >> the DPT and all. > > Hmmm, but how does a motherboard know what interupts a ISA card might > use? You certainly can't have ISA and PCI devices sharing the IRQ, but > it > is up to the operators to make sure it doesn't happen. Most MB I am familiar with route interrupts from the ISA bus to a PCI-ISA bridge. The bridge is programmable and will not pass interrupts form ISA that it was told not to. OTOH, I amy be talking about what things should have been. I think Steve Passe (amoung others) knows the definite answer here as he has to deal with it in the APIC code. > Win95 often works great in that situation, up until you address the > rogue ISA device. Or maybe it doesn't even have a driver installed for > the rogue device. Or, the driver knows about some problem with the MB and avoids it or works around it. This is why I suggested a call to DPT. It is a free call and they know about such intractions better than I do. ---------- Sincerely Yours, Simon Shapiro Shimon@Simon-Shapiro.ORG Voice: 503.799.2313 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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