ENGR 325 HOMEWORK #5 KEY
(5) Assume that the logic blocks needed to implement a processor’s datapath have the latencies shown in the table below. These problems refer to the datapath element Shift-Left-2. (P&H 4.4, §4.3) Block Latency (ps) I-Mem 200 Add 70 Mux 20 ALU 90 Regs 90 D-Mem 250 Sign-Extend 15 Shift-Left-2 10 a. Which kinds of instructions require this resource? b. For which kinds of instructions (if any) is this resource on the critical path? SOLUTION:
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