[1] : Jargon File (4.3.1, 29 Jun 2001)

priority interrupt n. from the hardware term describes any stimulus
   compelling enough to yank one right out of hack mode. classically used
   to describe being dragged away by an so for immediate sex, but may
   also refer to more mundane interruptions such as a fire alarm going off
   in the near vicinity. also called an nmi non-maskable interrupt,
   especially in pc-land.


see also:
hack mode so nmi 

[2] : The Free On-line Dictionary of Computing (27 SEP 03)

priority interrupt
     
        hardware describes any stimulus compelling enough to yank
        one right out of hack mode.  classically used to describe
        being dragged away by an so for immediate sex, but may also
        refer to more mundane interruptions such as a fire alarm going
        off in the near vicinity.  also called an nmi non-maskable
        interrupt, especially in pc-land.
     
        jargon file
     
     
see also:
hack mode so nmi jargon file 

Interrupt >> I Words
Interrupt, definition of term: Interrupt
interrupt_pag1.html

Priority >> P Words
Priority, definition of term: Priority
priority_pag1.html

Priority Mail >> P Words
Priority Mail, definition of term: Priority Mail
priority+mail_pag1.html

Priority Interr >> P Words
Priority Interr, definition of term: Priority Interr
priority+interr_pag1.html