Register File CLK Register File A1 Register File A2 Register File A3 Register File WD3 Register File RD1 Register File RD2 Register File WE3 Control Unit OP Control Unit Func Control Unit MemtoReg Control Unit MemWrite Control Unit Branch Control Unit ALUControl Control Unit ALURre Control Unit RegDst Control Unit RegWrite Instruction Memory A Instruction Memory Instr Instr 0:5 Instr 6:10 Instr 11:15 Instr 16:20 Instr 21:25 Instr 26:31 Instr 0:15 Instr 0:25 ALU F ALU SrcA ALU SrcB ALU result ALU zero Data Memory CLK Data Memory WE Data Memory A Data Memory WD Data Memory RD Sign Extend In Sign Extend Sign Imm Shifter