Art of Writing TestBenches

ArtofWritingTestBenchesArtofWritingTestBencheshttp://www.asic-world.com/verilog/art_testbench_writing.htmlJan-2-2006IntroductionBeforeyouStartExample-CounterCodeforCounterTestPlanTestCasesWritingTestBenchTestBenchTestBenchwithClockgenTestBenchcontinues...AddingResetLogicCodeofresetlogicAddingtestcaselogicTestCase1-Asserting/De-assertingresetTestCase2-Assert/De-assertenableafterresetisapplied.TestCase3-Assert/De-assertenableandresetrandomly.AddingcompareLogicIntroductionWritingtestbenchisascomplexaswritingtheRTLcodeitself.ThisdaysASIC'saregettingmoreandmorecomplexandthusthechallengetoverifythiscomplexASIC.Typically60-70%oftim