Shift Operation 32 None = 00 SLL = 01 SRL = 10 SRA = 11 SLT: ALU does a SUB and check the sign and overflow Shift Amount Shifter Isb 5 A 32 sign ALU Result 32 B 32 2 32 Arithmetic Operation ADD = 0 SUB = 1 overflow + 2 zero ALU Logic Unit ILI Logical Operation AND = 00 OR = 01 NOR = 10 XOR = 11 Selection Shift = 00 SLT = 01 Arith = 10 Logic = 11 Figure 3: Arithmetic and Logic Unit (ALU) design. 2. Task 2: Arithmetic and Logical Unit (ALU) Design - Design a 32-bit ALU to perform all the arithmetic, logic and shift operations required by your data path - Model your designed 32-bit ALU in Logisim - Test the correct functionality of the operations implemented by the ALU, at least the operations that are mentioned in Figure 3