Tasks:

$1.$ ALU Design:

o Define inputs and outputs of the ALU.

o Select four essential arithmetic and logical operations to implement $($e$.$g$.,$

addition, subtraction, AND, OR$).$

o Create a block diagram representing the ALU's structure.

$2.$ Verilog Modules:

o Develop a top$-$level ALU module with appropriate input$/$output ports.

o Design separate modules for each of the four chosen operations, utilizing

a combination of structural and behavioral modeling approaches.

$$ Modules: Adder, Subtractor, AndGate, OrGate, and ALU $($toplevel module$).$

$$ The ALU design should be modular, comprising separate modules

for each functionality.

$$ Implement the modules using structure, dataflow, and behavioral

modeling as below:

$1.$ Utilize structural modeling for Adder, Subtractor, and logic

gates.

$2.$ Implement dataflow modeling for connecting the modules.

$3.$ Utilize behavioral modeling for the top$-$level ALU module.

$3.$ Input$/$Output:

o The ALU should take two $4-$bit inputs $($A and B$).$

o Include a $3-$bit control input $($OpCode$)$ to select the operation:

$3\text{'}$b$000$: Addition

$3\text{'}$b$001$: Subtraction

$3\text{'}$b$010$: Bitwise AND

$3\text{'}$b$011$: Bitwise OR

o Output the result $($Result$)$ of the selected operation.

$4.$ Testing and Simulation:

o Test various combinations of input values and control codes to ensure

the ALU operates as expected. Apply a variety of input test cases to

cover all possible combinations.

o Simulate the ALU Components$/$Modules using a Verilog simulator and

analyze the results

o Simulate the ALU using a Verilog simulator and analyze the results.

$5.$ Documentation:

o Provide clear and concise comments within the Verilog code for better

understanding.

o Prepare a well$-$formatted project report detailing the design process,

code implementation, simulation results, and conclusions.

Evaluation:

$$ Correctness of the ALU's functionality.

$$ Efficiency of the Verilog code.

$$ Quality of the simulation results.

$$ Clarity of documentation and project report.

Additional Guidelines:

$$ Adhere to Verilog coding conventions and best practices.

$$ Consider using a design hierarchy for better organization.

$$ Thoroughly test the ALU under various input scenarios.

$$ Document any assumptions or design choices made during the project.