Question

Explain the page memory management system with a suitable Page Map Table (PMT).

Answer 1

Paging is a memory management technique that allows a program to be stored in non-contiguous memory locations. Physical memory is divided into fixed-size blocks called Page Frames, and logical memory is divided into blocks of the same size called Pages.

When a program is executed, its pages are loaded into any available frames. A Page Map Table (PMT) is used to map the page number to the corresponding frame number. The page size is defined by hardware and is usually a power of 2.

Suitable Page Map Table (PMT):

Every logical address generated by the CPU is divided into:

• Page number (p)
• Offset (d)

The page number is used to index the PMT to find the frame number. The physical address is then formed by combining the frame number with the offset.