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Situation:

When I inherited a legacy testbench, I noticed it was highly disorganized and unstructured. This created multiple issues, including difficulty in debugging, lack of controllability for scaling, and poor readability. One major bottleneck was that the entire IP relied on a single configuration class, making it hard to manage or extend.

Task:

Although restructuring the testbench was not part of my immediate job responsibilities, I saw the long-term impact of these inefficiencies. I took ownership of the problem and decided to re-architect the testbench structure to improve modularity, maintainability, and reusability.

Action:

I took a couple of days to analyze the structure and made the following improvements:

• Split the      single configuration class into multiple per-block config classes, improving      modularity.

• Created a      common library file     to house parameters, commonly used functions, and shared classes, ensuring      consistency across the testbench.

• Added      control knobs     for better configurability and debugging.

Result:

• The new structure allowed us      to control configurations of individual blocks independently, making it easier to scale.

• Debugging became much more      efficient as we could quickly pinpoint issues to specific classes.

• Reusability      increased significantly, as block-level configurations could now be leveraged for both      block-level and full-IP testbenches.

• Overall, these changes      enhanced productivity and streamlined testbench development.

To solve this detector, essentially you would need a finite state machine. first you need to draw the state diagram of the transition while detecting the sequence. Then in verilog, you need to implement the case statement.