The testbench, constraints, checkers and coverage are written using SystemVerilog Assertions. Discuss the steps involved in Layout versus Schematic? Difference between LVS and DRC? Levels of verification Level 0: Designer/macro, lowest level zVerification done by the designer (one who wrote the VHDL) zEnsures that the design will load into simulator and that basic functions work zMany changes in specification expected at this level zSmall block size, suitable also for formal verification … Formal verification is the process of verifying the correctness of the design using mathematical techniques. The two step LEC flow is the recommended way to verify RC netlists. Define ERC? * Testing is where you make sure your code - as written - actually works the way it's supposed to work. Formal verification is an answer to such a problem 2. What is the difference between ndm generation using oas and using lef? Differentiate Pitch and Spacing between metal layers? Formal verification is an automatic checking methodology that catches many common design errors and can uncover ambiguities in the design. Formal Verification (a.k.a Formal, a.k.a FV) is a different style of verification but achieves the same end goal -- weeding out bugs from your design. Discuss about Antenna check? * Formal verification is where you prove mathematically that the underlying algorithm is correct. Formal verification is an answer to it. Formal verification is also a double check on your synthesis tool, that it is doing the right job. Examples of EDA tools for formal verification. What are the common DRC checks? I suggest you continue to use the two step flow. 3. What is meant by Pitch? Often the late fixes also called ECOs, need to be verified quickly without running lengthy simulations. Cover: Detect Missing tended functionalities can be detected. The two step LEC flow helps LEC resolve and verify sequential merging. verification:6,7 cover, complete, data-flow, and extraneous. The single step verification flow can often resolve sequential merging, but sometimes it cannot. One of the big differences between Functional and Formal Verification is the role that the tool plays. It is the best way to prevent false-noneqs and aborts. Define LEC? The four alterna-tive activities aim to achieve the same three goals, substituting verification cases for test cases in the first one. Jentil Jose, Sachin A. Basheer Wipro Technologies Abstract: Formal tools used for functional verification claims an upper hand on traditional simulation based tools; given their exhaustive nature of property checking and a fast learning curve. Checking methodology that catches many common design errors and can uncover ambiguities in first... Formal verification is also a double check on your synthesis tool, that is! 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