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The unit that is needed for virtual mode 80386, only to run the 8086 programs, which require more than 1 Mbyte of memory for memory management functions, is

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The unit that is needed for virtual mode 80386, only to run the 8086 programs, which require more than 1 Mbyte of memory for memory management functions, is

(a) execution unit

(b) central processing unit

(c) paging unit

(d) segmentation unit

The question was asked during an internship interview.

My question is taken from Virtual 8086 Mode, The Coprocessor 80387 in section 32-bit Processors-80386, 80387 and 80486 of Microprocessor

1 Answer

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by (49.2k points)
The correct option is (c) paging unit

To explain I would say: Paging unit is not necessarily enabled in the virtual mode, but may be needed to run the 8086 programs, which require more than 1 Mbyte of memory, for memory management functions.

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