Question 16355 – UPPCL AE 2022
February 19, 2024Question 6364 – OOPS
February 19, 2024Question 11881 – UGC NET CS 2014 Dec – paper-3
For switching from a CPU user mode to supervisor mode following type of interrupt is most appropriate
Correct Answer: C
Question 2 Explanation:
Software interrupt is caused either by an exceptional condition in the processor itself, or a special instruction in the instruction set which causes an interrupt when it is executed.
It is used for switching from a CPU user mode to supervisor mode.
Software interrupts is internal interrupt triggered by some software instruction.
There are 8 software interrupts in 8085 microprocessor. They are – RST 0, RST 1, RST 2, RST 3, RST 4, RST 5, RST 6, RST 7.
External interrupt: External interrupts are the interrupts caused by the hardware module. pressing a key on the keyboard or moving the mouse triggers hardware interrupts that cause the processor to read the keystroke or mouse position.
It is used for switching from a CPU user mode to supervisor mode.
Software interrupts is internal interrupt triggered by some software instruction.
There are 8 software interrupts in 8085 microprocessor. They are – RST 0, RST 1, RST 2, RST 3, RST 4, RST 5, RST 6, RST 7.
External interrupt: External interrupts are the interrupts caused by the hardware module. pressing a key on the keyboard or moving the mouse triggers hardware interrupts that cause the processor to read the keystroke or mouse position.
Internal interrupts
External interrupts
Software interrupts
None of the above
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