What is the value of the PCSrc signal for this instruction? This signal is generated early in

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What is the value of the PCSrc signal for this instruction? This signal is generated early in the MEM stage (only a single AND gate). What would be a reason in favor of doing this in the EX stage? What is the reason against doing it in the EX stage?


The first three problems in this exercise refer to the execution of the following instruction in the pipelined datapath from Figure 4.51, and assume the following clock cycle time, ALU latency, and Mux latency:a. b. Instruction LW R1,32(R2) OR R1, R5, R6 Clock Cycle Time 50ps 200ps ALU Latency 30ps 170ps Mux Latency

Figure 4.5114 MUX PC Address Add Instruction memory IFAD Instruction Read register 1 Read register 2 Write register

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Computer Organization And Design The Hardware Software Interface

ISBN: 9780123747501

4th Revised Edition

Authors: David A. Patterson, John L. Hennessy

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