In message <[EMAIL PROTECTED]> Peter Jeremy writes:
: 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.
All but one of my machines do that. I have a special card :-)
: 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).
I've had the pci bus hang when undebugged hardware was plugged into
it... When the machine was in this state it was impossible to break
into the debugger. I don't know what is hanging either...
Warner
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