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Suppose an 80286 microprocessor is in protected mode. How it is switched back to real address mode operations.
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Suppose an 80286 microprocessor is in protected mode. How it is switched back

to real address mode operations.

User Bharti Ladumor
by
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1 Answer

1 vote

Answer:

hardware-initiated reset

Step-by-step explanation:

Once in protected mode, the 80286 is designed to remain there until it is reset by hardware.

__

External hardware can be designed so that software can cause such a reset. In the 1984 PC/AT, such hardware combined with code in the BIOS allowed real mode re-entry and returned execution control to the program that caused the reset.

User Ziyad
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