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Altera_Forum
Honored Contributor
Honored Contributorsigned/unsigned multipliers
I can't seem to find a way to instantiate a multiplier that will dynamically select between signed and unsigned multiplication. This is on a Cyclone II, but applies to other parts as well. Read...
Altera_ForumHonored Contributor
Honored Contributor --- Quote Start --- Just to clarify, have you tried FvM's solution using altmult_add? It's certainly there in Quartus 6.1 and although the symbol in the MegaWizard looks a bit mad at first, if you do as FvM says and set the number of multipliers to 1 it simplifies up a treat. As a matter of interest, what was the workaround you chose in the end? --- Quote End --- Yes, the workaround looks great in Q II 8.1 (I failed to notice the "variable" option for input signedness when I first looked at it). I'm still trying to get the synthesis bug fixed, but that might take a while. I'll follow up if there's news. Thanks all, Tommy
