Data processing: structural design – modeling – simulation – and em – Simulating electronic device or electrical system – Circuit simulation
Reexamination Certificate
1993-08-26
2011-11-01
Coulter, Kenneth R (Department: 2445)
Data processing: structural design, modeling, simulation, and em
Simulating electronic device or electrical system
Circuit simulation
C703S014000, C703S013000
Reexamination Certificate
active
08050903
ABSTRACT:
Apparatus for storing all logic simulation signal values generated by a logic simulator during a simulation run is provided. The apparatus includes a runtime array for storing a plurality of signal values for each time instance in a predetermined time period, and a checkpoint cache for selectively storing the plurality of signal values stored in the runtime array at selected time instances. A hyper-checkpoint array is further provided to checkpoint the signal values in the checkpoint cache. In addition, the time instances and values of memory writes are also checkpointed. A user may retrieve the value of any signal values generated during the simulation run and may additionally rewind the simulator to a user-specified time in the simulation run.
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Bosshart Patrick W.
Matzke Douglas J.
Pickens Daniel Charles
Smith Derek James
Brady III Wade J.
Coulter Kenneth R
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
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