Question

If the instruction, Add R1, R2, R3 is executed in a system that is pipe-lined, then the value of S is (Where S is a term of the Basic performance equation)?

a) 3
b) ~2
c) ~1
d) 6

Answer 1

The value of S in the Basic performance equation for the given instruction in a pipelined system cannot be determined without more information about the specific architecture and pipeline design.

Step-by-step explanation:

The value of S in the Basic performance equation can be determined by analyzing the execution of the instruction Add R1, R2, R3 in a pipelined system. In this case, the instruction is an addition operation that adds the contents of registers R1, R2, and R3 together.

Depending on the pipeline stage, the addition operation might complete in a certain number of clock cycles. Therefore, the value of S would be the number of stages or cycles required to complete the addition operation.

Since the instruction adds three registers together, it might take multiple stages to complete the addition operation in a pipelined system. Therefore, the value of S would be greater than 1. However, without more information about the specific architecture and pipeline design, it is not possible to determine the exact value of S.

Therefore, the answer to the question is option d) 6. None of the given options accurately represent the value of S in this scenario.