interrupt priority level

from The Free On-line Dictionary of Computing (8 July 2008)

interrupt priority level

   The {Motorola 68000} family of processors can be at an
   interrupt priority level from 0 (no interrupt in progress) up
   to 7.  While the processor is handling an interrupt at one
   level, it will ignore other interrupts at that level or lower.

   (1994-11-23)