Hi..
 GM> CH> Not quite. NMI is disableable on all 286+ motherboards by setting 
it
 GM> 7
 GM> CH> of port 70h. On an XT, It's possible by reprogramming the 8255.
 GM> It's possible
 GM> CH> CLI has no effect on NMI, nor does disabling the PIC's.
 GM> Of course not. Then, if you have a NMI at anytime it won't matter
 GM> much. Failed parity is failed parity.
NMI is also used for math coprocessor exceptions in 286 and 386 designs, so 
an NMI handler needs to find out which source triggered it, and take the 
appropriate action, not just assume it must be a parity error.
       Craig
--- FMail/386 1.20+
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