Re: Can NMI drop a hanging FreeBSD kernel into DDB?

[Warner Losh]

In message <[EMAIL PROTECTED]> 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 
could get the pcccard bus (and/or cardbus) to genereate NMIs for
laptop hacking at times.

Warner




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