OPERATING SYSTEMS FOR COMPUTERS
COMPUTER OPERATING SYSTEMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Hardware:e.g. power button pressed.
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Software:e.g. a program needs to run a routine (for example, to automatically save a document being edited by a user).
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Time triggered:e.g. in data logging applications.
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Peripheral:e.g. user has moved the mouse.
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Detailed explanation-1: -TRAP is the internal interrupt that has the highest priority among all interrupts except the divide by zero exception.
Detailed explanation-2: -The interrupt priority is regulated by both hardware and software. FIQ interrupts have the highest priority, followed by the vectored interrupts 0-31, and the daisy-chained interrupt has the lowest priority.
Detailed explanation-3: -The interrupt priority defines which of a set of pending interrupts is serviced first. INTMAX is the most favored interrupt priority and INTBASE is the least favored interrupt priority. The interrupt priorities for bus interrupts range from INTCLASS0 to INTCLASS3.
Detailed explanation-4: -The highest interrupt priority upon reset in 8051 is external interrupt 0.