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The R/M field in a machine instruction format specifies

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in Microprocessor by (39.4k points)
The R/M field in a machine instruction format specifies

(a) another register

(b) another memory location

(c) other operands

(d) all of the mentioned

The question was asked by my college director while I was bunking the class.

This is a very interesting question from Machine Language Instruction Formats topic in section 8086/88 Instruction Set and Assembler Directives of Microprocessor

1 Answer

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by (49.2k points)
Right choice is (d) all of the mentioned

The best explanation: The LSBs(least significant bits) from 0 to 3 represent R/M field that specifies another register or memory location i.e. the other operand.

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