Add Add ALU result Shift Reg2Loc Uncondbranch eft2 Branch Mem Read Instruction 131-211 Memto Control ALUO Mem Write ALUSrc Instruction 19-51 PC address Instruction 20-1 register 1 Read u Read data 1 Zero register 2 Instruction ALUALU Address Read M [31-01 register data 2 Instruction I Instruction 4-01 memory Write Write Data data 32 Sign ALU extend control Instruction [31-0] Instruction 131-21] 4.23 The simple control and datapath are extended to handle the unconditional branch instruction. An