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The instruction that shifts the specified number of bits in the instruction, from the upper side of the source operand into the lower side of the destination operand is

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The instruction that shifts the specified number of bits in the instruction, from the upper side of the source operand into the lower side of the destination operand is

(a) SHRD

(b) SHLD

(c) SETNS

(d) None of the mentioned

This question was addressed to me in final exam.

Enquiry is from Enhanced Instruction Set of 80386 in portion 32-bit Processors-80386, 80387 and 80486 of Microprocessor

1 Answer

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Right option is (b) SHLD

The explanation is: The SHLD instruction shifts the specified number of bits in the instruction, from the upper side (i.e. MSB) of the source operand into the lower side (i.e. LSB) of the destination operand.

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