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Delay correlation analysis and representation for vital complaint VHDL models

United States Patent

November 9, 2004
View the Complete Patent at the US Patent & Trademark Office
Lawrence Livermore National Laboratory - Visit the Industrial Partnerships Office Website
A method and system unbind a rise/fall tuple of a VHDL generic variable and create rise time and fall time generics of each generic variable that are independent of each other. Then, according to a predetermined correlation policy, the method and system collect delay values in a VHDL standard delay file, sort the delay values, remove duplicate delay values, group the delay values into correlation sets, and output an analysis file. The correlation policy may include collecting all generic variables in a VHDL standard delay file, selecting each generic variable, and performing reductions on the set of delay values associated with each selected generic variable.
Rich; Marvin J. (Poughkeepsie, NY), Misra; Ashutosh (Bangalore, IN)
International Business Machines Corporation (Armonk, NY)
10/ 038,209
January 2, 2002
This invention was made with government support under subcontract B338307 under prime contract W-7405-ENG-48 awarded by the Department of Energy. The Government has certain rights in this invention.