Question

Which addressing mode is necessary to implement pointers in a processor?

Answer 1

Addressing modes are an aspect of the instruction set architecture in most central processing unit designs. The various addressing modes that are defined in a given instruction set architecture define how machine language instructions in that architecture identify the operand of each instruction. 

Answer 2

Answer: Indirect Addressing mode

Explanation:

In Indirect Addressing mode, Instruction contains the address of Effective Address(M-->EA-->operand), so it is used for pointer implementation.

Index Addressing mode is used for array implementation because array can be accessed by changing the index value in instruction.

For program relocation, relative addressing mode is used, but we can implement relocation using Base Addressing mode by changing value in Base.