Question

The number of pages that the paging unit allows, in the virtual mode of 80386 is

(a) 64

(b) 128

(c) 256

(d) 512

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

Answer 1

The correct answer is:

(d) 512

In the virtual mode of the 80386 microprocessor, the paging unit allows up to 512 pages for the virtual memory addressing. This is because the 80386 supports a 32-bit virtual address space, and each page is typically 4 KB in size. In virtual mode, the paging mechanism divides the virtual address space into 512 pages of 4 KB each.