Unused signals in Modelsim

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

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Modelsim does not remove undriven/unused signals; a synthesis tool, however, is likely to.

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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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Jon Beniston

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