6.3.1. Testbenches

Try these first

1. 1.

   What is the main purpose of a testbench?

   Hint

   Think about what we do to validate a design.

2. 2.

   Name one type of testbench.

   Hint

   Recall the two types we discussed in class.

3. 3.

   What is the primary function of a testbench?

   • To apply inputs
   • To compile code
   • To validate timing

   Hint

   Think about what you need to do before checking output.

4. 4.

   True or False: Directed testbenches can catch all edge cases.

   • True
   • False

   Hint

   Consider the limitations of having fixed test vectors.

5. 5.

   Design a testbench for a 4-input multiplexer. Include stimulus generation and monitoring outputs.

   Hint

   Think about how you will apply the various select lines to test all input scenarios.

6. 6.

   Critique a given directed testbench for potential improvements using randomization techniques.

   Hint

   Consider both the benefits and limitations of directed tests.