2. We do not discuss the datapath for I-type instructions like ADDI or ANDI. (a) What additional logic blocks, if any, are needed to add I-type instructions to the CPU shown in the following figure (Figure 4.23 in the textbook)? Add any necessary logic blocks to it and explain their purpose. (b) Show the dataflow for this instruction using dash lines on the following figure Add Add ALU Shift left 2 Reg2Loc Branch MemRead MomtoRog Instruction (31-21 Control ALUOD Vem ALUSIC RegWrite PC Read Instruction 19-51 Instruction (20-1610 address Read register 1 Read Read data 1 register 2 Write Road Zero >ALU ALU Instruction [ (31-0) Instruction memory result Address Read data Tirstruction 14-02 egister data 2 Write data Registers i White Date data memory Instruction (31-01 32 Sign- extend ALU control Instruction (31-21) (c) List the values of the signals generated by the control unit for ADDI. Explain the reasoning for any "don't care" control signals. Reg2Loc ALUSC MemtoReg RegWrite MemRead MemWrite Branch ALUOP1 ALUOPO