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The instruction that multiplies the content of the stack top by 2n is

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in Microprocessor by (39.4k points)
The instruction that multiplies the content of the stack top by 2n is

(a) FMUL

(b) FPREM

(c) FSCAL

(d) FCSH

I have been asked this question during an interview.

I would like to ask this question from Numeric Processor 8087 -1 topic in section Multimicroprocessor Systems of Microprocessor

1 Answer

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by (49.2k points)
Right option is (c) FSCAL

The explanation is: FSCAL instruction multiplies the content of the stack top by 2n, where n is an integral part of stack and stores the result in stack.

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