Electronics and Communication Engineering - Digital Electronics - Discussion


In register index addressing mode the effective address is given by

[A]. index register value
[B]. sum of the index register value and the operand
[C]. operand
[D]. difference of the index register value and the operand

Answer: Option B


4 = 22, in up scaling digit will be shifted by two bit in right direction.

Sateesh said: (Apr 24, 2015)  
I think option A is correct. For eg Mov A, @R1. The address is stored in R1. So its effective address is depends on R1.

Swati said: (May 30, 2015)  
In index addressing mode address is calculated by adding the address of both @a+dptr.

Manjunath Rk said: (May 7, 2018)  
I think Option A is correct.

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