privileged instruction

[′priv·ə·lijd in′strək·shən] (computer science) A class of instructions, usually including storage protection setting, interrupt handling, timer control, input/output, and special processor status-setting instructions, that can be executed only when the computer is in a special privileged mode that is generally available to an operating or executive system, but not to user programs.

privileged instruction

A machine code instruction that may only be executed whenthe processor is running in supervisor mode. Privilegedinstructions include operations such as I/O and memory management.

单词	privileged instruction
释义	privileged instruction privileged instruction [′priv·ə·lijd in′strək·shən] (computer science) A class of instructions, usually including storage protection setting, interrupt handling, timer control, input/output, and special processor status-setting instructions, that can be executed only when the computer is in a special privileged mode that is generally available to an operating or executive system, but not to user programs. privileged instruction A machine code instruction that may only be executed whenthe processor is running in supervisor mode. Privilegedinstructions include operations such as I/O and memory management.
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