Answer Happy

4-BIT Arithmetic and Logical Unit (ALU) A 4-bit ALU unit takes two 4-bit inputs and one 3-bit input (OPCODE). Based on the OPCODE the ALU performs one of the following instructions: ADD (A+B). SUB(A-B), AND (A&B). and OR (AB). The block level diagram of the 4-bit ALU is given in Fig 2. The 4-bit ALU is constructed out of 4 1-bit ALUS (hierarchical design). The block diagram and gate level diagram of 1-bit ALU is provided in Fig. 3a and Fig. 36. You need to implement this 1-bit ALU in Verilog using gate level modeling technique. Then, you will need to construct the 4-bit ALU as per Fig. 2 using the 1-bit ALU module. Result[3:01 A (3:0) B[3:01 Operation (2:0) 4-BIT ALU overflow All 3:01 All 3/11 A[2] 221 A1:31 페 Q Co a OV 1-BIT ALU 1 BITALU 1-SITALU DarT ALU Operation! Operation 21 Operation (1:01 Operation 21 Operation 11:01 Operation 121 Operation 11:01 Operation : Operation 10 Resto Result[11 Result Result Fig 2. 4-BIT ALU BLOCK DIAGRAM AND HIERARCHICAL DESIGN USING 4 1-BIT ALUS Result 1-BIT ALU Result b_invert Operation (1:0) 4d Mux Full Adder Co Operation (1:0) Fig 3. 1-Bit ALU a. Block Diagram b. Gate level diagram