In register index addressing mode, how is the effective address of the operand calculated?
Electronics and Communication Engineering
Digital Electronics
Difficulty: Medium
Choose an option
-
Aindex register value
-
Bsum of the index register value and the operand
-
Coperand
-
Ddifference of the index register value and the operand
-
Ebase register + operand
Answer
Correct Answer: sum of the index register value and the operand
Explanation
Introduction:Addressing modes define how effective addresses of operands are computed in assembly language and microprocessor design.
Concept:
In index addressing, the effective address (EA) = index register content + displacement (operand). This allows accessing arrays efficiently.
Final Answer:
sum of the index register value and the operand