non reliable nmi

[cjarvis at vci.com]

In <20030904131244.GU556 at straylight.oblivion.bg>, on 09/04/03 
   at 09:12 AM, Peter Pentchev <roam at ringlet.net> said:

>I haven't kept quite up to date on my x86 hardware lately (read: in the
>past five to ten years), but I distinctly remember a time when everyone
>referred to x86's NMI as a joke: a non-maskable interrupt that anyone
>could mask using a simple CLI instruction.  Not sure if this is still the
>case, others would have to say if today's processors still may get so
>wedged that a NMI request would simply be ignored.

CLI doesn't stop an NMI, but you can mask off NMI in the CMOS RAM.  On
standard PC-AT platforms anyway.

-- 
Clark




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