Date: Thu, 11 May 2000 08:51:22 +1000 From: Peter Jeremy <peter.jeremy@alcatel.com.au> To: wc.bulte@chello.nl Cc: hackers@FreeBSD.ORG Subject: Re: Can NMI drop a hanging FreeBSD kernel into DDB? Message-ID: <00May11.085127est.115442@border.alcanet.com.au> In-Reply-To: <20000510231004.A1871@jedi.wbnet>; from wkb@chello.nl on Thu, May 11, 2000 at 07:10:27AM %2B1000 References: <00May11.070143est.115219@border.alcanet.com.au> <20000510231004.A1871@jedi.wbnet>
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On 2000-May-11 07:10:27 +1000, Wilko Bulte <wkb@chello.nl> wrote: >And if you force the IOCHK* line on an AT slot to GND? Would that work >on modern PCI machines? Grounding IOCHK* does cause an NMI on the only PCI machine I've tried it on. It looks like this is maskable in the Intel PIIX3 (and presumably later) chips, so it may depend on the BIOS. I don't know whether this will still work if the PCI bus is hung. I know it doesn't work when I wedge that machine, but I'm not sure what is wedging (since I'm not playing with untested PCI hardware, I think it's not the PCI bus). Peter To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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