What are pointer and index registers ?

1.	What are pointer and index registers ?
Answer» Pointer and index register:- (i) The Pointer IP,BP and SP usually contain in offset within the code and stack (Back SP and BP ) segment. (ii) The index register are used as general purpose register as well as for offset storage in case of indexed. (iii)The register SI is generally used to store the offset of source data segment while the register Di used to store the offset of destination in data or extra segment. The index register are particularly useful for string manipulation. SP- Stack Pointer BP-Back Pointer SI- Source Index DI-Destination Index IP- Index Pointer

Answer»

Pointer and index register:-

(i) The Pointer IP,BP and SP usually contain in offset within the code and stack (Back SP and BP ) segment.

(ii) The index register are used as general purpose register as well as for offset storage in case of indexed.

(iii)The register SI is generally used to store the offset of source data segment while the register Di used to store the offset of destination in data or extra segment.

The index register are particularly useful for string manipulation.

SP- Stack Pointer

BP-Back Pointer

SI- Source Index

DI-Destination Index

IP- Index Pointer

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