Date: Thu, 11 May 2000 19:55:41 -0400 From: Sergey Babkin <babkin@bellatlantic.net> To: Warner Losh <imp@village.org> Cc: Peter Jeremy <peter.jeremy@alcatel.com.au>, wc.bulte@chello.nl, hackers@FreeBSD.ORG Subject: Re: Can NMI drop a hanging FreeBSD kernel into DDB? Message-ID: <391B487D.3BB896DC@bellatlantic.net> References: <391A1F35.23F38D4A@bellatlantic.net> <00May11.070143est.115219@border.alcanet.com.au> <20000510231004.A1871@jedi.wbnet> <00May11.085127est.115442@border.alcanet.com.au> <200005110409.WAA97551@harmony.village.org>
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Warner Losh wrote: > > In message <391A1F35.23F38D4A@bellatlantic.net> Sergey Babkin writes: > : Seems like most of the modern machines just don't have that > : pin on the PCI bus connected anywhere. But on most of them > : (though not all) the pin on ISA works. Some high-end machines > : like Unisys or Compaq have an NMI button on the box (sometimes > : under the cover). > > IOCHK* isn't on the PCI bus at all. You have to do weird things for > it to generate an NMI that I've never quite worked out. I sure wish I Probably SERR# is used instead. We have small cards at work with a big button, ISA connector on one side and PCI connector on the other one. I'm not sure exactly to which signal on the bus is it connected. But the PCI side commonly don't work for the modern machines. > could get the pcccard bus (and/or cardbus) to genereate NMIs for > laptop hacking at times. If it's derived from PCI you can try to use SERR# or its analog. -SB To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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