CPU as two modes privileged and non-privileged. In order to change the mode from privileged to non-privileged.

Question:CPU as two modes privileged and non-privileged. In order to change the mode from privileged to non-privileged.

1. A hardware interrupt is needed

2.A software interrupt is needed

3.Either hardware or software interrupt is needed

4. A non-privileged instruction (which does not generate an interrupt)is needed


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