check delay unit
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2)verify the delay requirement by accusim before layout
-run accusim with command " accusim s1238_delay/accusim"
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3)verify the delay requirement by accusim after layout
(Note: To do this step, you must finish circuit layout first. )
-extract mask lumped parameters from layout (i.e. write back annotation file) see file tree
-follow the steps in above "step 2)verify the delay requirement by accusim before layout" and get the result