Basics of memory management
Q.1 How logical address is converted into physical address by memory management unit ? Explain it with example. ( May – 2017 ) 5 Marks.
Logical Address :- It is generated by CPU. This address is also called virtual address.
Physical Address :- Main memory address uses physical address. This address also called as real
address. Memory management unit ( mmu ) is responsible for mapping of logical address to physical
address during run time. Base register is sometimes called as a relocation register. The value of the
relocation register is added to every address generated by processor to get physical address.
Figure shows basic operation of memory management unit mapping of logical address to
physical address is also termed as Dynamic relocation. For good memory management, logical
address space is bound with a separate physical address space.
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