Privileged instruction

  • Authors:

  • Gideon Frieder

  • Affiliations:

  • -

  • Venue:
  • Encyclopedia of Computer Science
  • Year:
  • 2003

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Abstract

Improper use of certain instructions can easily affect system integrity in a multiprocessing environment, whether it is a single user multitasking (q.v.) or a multiuser environment. These particular instructions usually include storage protection setting, interrupt handling, timer control, I/O, and special processor status-setting instructions.