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In the following indexed addressing mode instruction, MOV 5(R1), LOC the effective address is ______

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In the following indexed addressing mode instruction, MOV 5(R1), LOC the effective address is ______

(a) EA = 5+R1

(b) EA = R1

(c) EA = [R1]

(d) EA = 5+[R1]

I got this question in an international level competition.

My doubt is from Addressing Modes topic in division Machine Instructions and Programs of Computer Architecture

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Correct choice is (d) EA = 5+[R1]

For explanation: This instruction is in Base with offset addressing mode.

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