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Altera_Forum
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18 years ago

Help: What's the difference between functional simulation and timing one

I have a project and the functions are OK when i run functional simulation,but when i tried timing one ,it didn't work as i designed ,it seems as if it didn't work. In some other projects the problem...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
18 years ago

No commment on the 3 first statements / questions.

As regards the hash marks, this usually means that in the simulation the value is unknown (to the simulator).

This is usually because some reset signal or established value has not occured or propogated throught the logic in the design and the value (in the simulator) cannot resolve to a known level of 1 or 0.