Hi newsgroup users,
maybe you can help me on the following question:
Does Modelsim remove registered signals which are unused or not connected to output pins? Is there a possibility to avoid this without using output pins?
Kind regards
Unused signals in Modelsim
Jun 22, 2004
2 Replies
Modelsim does not remove undriven/unused signals; a synthesis tool, however, is likely to.
It doesn't for the standard level of optimisation. If you enable
-O5/-fast then it may well do.
You can either compile with the default optimisation level, or use an option like +acc to make sure it retains a particular net/register.
Cheers, JonB
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