How do you save wcfg waveform data in Xilinx ISim clock cycle resolution

Question

I have a simulation that takes 4 hours to run and don't want to repeat it when I have to measure timing. Is there a way to save the data so that I can review it on demand.

score 1 · Accepted Answer · answered Jul 24 '17 at 21:09

The simulation data is store in a waveform database (.wdb) file. The waveform configuration file (.wcfg) contains only the selected signals and its display settings like radix, color, position, grouping, ...

So don't delete the *.wdb file and load/open it on your next run. Don't overwrite it :).

How do you save wcfg waveform data in Xilinx ISim clock cycle resolution

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