IF/ID:   32 PC+4
           32 Instruction
           64 TOTAL

  ID/EX:    2 WB (RegWrite, MemtoReg)
            3 M
            4 Ex
           32 PC+4
           32 Read data 1
           32 Read data 2
           32 Immediate operand
            5 rs
            5 rt
            5 rd
          152 TOTAL

  EX/MEM:   2 WB
            3 M
           32 Branch Target Address
            1 Zero
           32 ALU Result
           32 Read data 2
            5 Writeback reg num
          107 TOTAL

  MEM/WB:   2 WB
           32 Read Data
           32 ALU Result
            5 Writeback reg num
           71 TOTAL