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In protected mode of 80386, the VM flag is set by using

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In protected mode of 80386, the VM flag is set by using

(a) IRET instruction

(b) Task switch operation

(c) IRET instruction or task switch operation

(d) None of the mentioned

I got this question in quiz.

This intriguing question comes from Register Organisation of 80386 -1 topic in section 32-bit Processors-80386, 80387 and 80486 of Microprocessor

1 Answer

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Right answer is (c) IRET instruction or task switch operation

Best explanation: The VM flag can be set using the IRET instruction or any task switch operation, only in the protected mode.

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