Computer-Organization
October 13, 2023Computer-Organization
October 13, 2023Computer-Organization
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Question 2
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If we use internal data forwarding to speed up the performance of a CPU (R1, R2 and R3 are registers and M[100] is a memory reference), then the sequence of operations
R1 → M[100] M[100] → R2 M[100] → R3
can be replaced by
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R1 → R3
R2 → M[100] |
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M[100] → R2
R1 → R2 R1 → R3 |
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R1 → M[100]
R2 → R3 |
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R1 → R2
R1 → R3 R1 → M[100] |
Question 2 Explanation:
Data forwarding means if CPU writes to a memory location and subsequently reads from the same memory location, the second instruction can fetch the value directly from the register used to do write than waiting for the memory. So, this increases the performance.
Correct Answer: D
Question 2 Explanation:
Data forwarding means if CPU writes to a memory location and subsequently reads from the same memory location, the second instruction can fetch the value directly from the register used to do write than waiting for the memory. So, this increases the performance.
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