PCSrc 0 Add ALU Add Shift left 2 RegWrite Instruction [25-21] Read register 1 Read Read register2 Write Read address PC MemWrite data 1 nstruction [(20-16 ALUSrc MemtoReg Instruction [31-0] Read data 2 ero ALU ALU result 0 0 Address Read data ureglster Instruction [15-11] I Write data Registers Write Data data memory RegDst instruction [15 16 Sign extend ALU control MemRead Instruction [5-0] ALUOp PCSrc 0 Add ALU Add Shift left 2 RegWrite Instruction [25-21] Read register 1 Read Read register2 Write Read address PC MemWrite data 1 nstruction [(20-16 ALUSrc MemtoReg Instruction [31-0] Read data 2 ero ALU ALU result 0 0 Address Read data ureglster Instruction [15-11] I Write data Registers Write Data data memory RegDst instruction [15 16 Sign extend ALU control MemRead Instruction [5-0] ALUOp