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The FPU (Floating Point Unit) writes the results to the floating point register file in

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The FPU (Floating Point Unit) writes the results to the floating point register file in

(a) X1 execution state

(b) X2 execution state

(c) write back stage

(d) none of the mentioned

The question was asked during an online exam.

My query is from System Architecture topic in division Recent Advancements in Microprocessor Architecture of Microprocessor

1 Answer

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Right choice is (c) write back stage

The best explanation: In the two execution stages of X1 and X2, the floating point unit reads the data from the data cache and executes the floating point computation. In the “write back stage” of pipeline, the FPU (Floating Point Unit) writes the results to the floating point register file.

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