MOV A, R1 will-

By Mona Kumari|Updated : June 28th, 2022

Choose the right answer to the question, MOV A, @ R1 will -

  1. Copy R1 to the accumulator.
  2. Copy the accumulator to R1.
  3. Copy the contents of memory whose address is in R1 to the accumulator.
  4. Copy the accumulator to the contents of memory whose address is in R1.

Answer: Option C. Copy the contents of memory whose address is in R1 to the accumulator 

MOV A, @ R1, will copy the contents of memory whose address is in R1 to the accumulator.

Solution

The detailed solution to the question, MOV A, @ R1 will be provided here. 

Register Indirect Addressing Mode: In this type, the register will store the address of the target memory location and will be mentioned in the instruction.

Example: 

MOV A, @ R1 

MOV R2, @R3

MOV @R2, R3

In the instruction MOV A, @ R1; R1 stores the address from where the contents must be copied and stored in the accumulator. The @ sign is used to register indirect addressing in the instructions.

Hence, Option (C) is the correct answer.

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