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leagend5489's avatar
leagend5489
Icon for New Contributor rankNew Contributor
3 years ago
Solved

part of design disappear in technology map

hi I have a design that can be compiled. but part of design not use any source. I check RTL viewer, the part exist. but in technology map, it isn't existed. Is it about timing constrait problem...
  • leagend5489's avatar
    leagend5489
    3 years ago

    this problem is getting weird. I am closing this thread in this moment.

FvM's avatar
FvM
Icon for Super Contributor rankSuper Contributor
3 years ago

I'd like to give a general answer in case other forum users are reviewing the thread.

"Disappearing" logic is never caused by timing problems.

It's usually due to the fact that the synthesis tool removes any redundant logic. Redundant are all parts of your design that don't affect an output signal. Popular reasons are missing module connections, unconnected clock or module is inadvertently hold in reset.

Regards

Frank