試題詳解

25. 一個五階的管線中：IF(Instruction fetch)、ID(Instruction decode and register file read)、EXE(Execution or address calculation)、MEM(Memory access)、WB(Write Back)，則 BTB(Branch Target Buffer)單元應該在哪一階段中?
(A)IF
(B)ID
(C)EXE
(D)WB