Question: (2 marks) Consider a system with only two types of machine language instructions A and B, with CPIA = 4 and CPIB = 8. Suppose

(2 marks) Consider a system with only two types of machine language instructions A and B, with CPIA = 4 and CPIB = 8. Suppose that through a hardware modification CPIA could be deceased to 2, without any change to CPIB, at the cost of increasing the clock cycle time by 20%. For what range of values of the fraction fA of executed instructions of type A would the program execution time decrease?

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