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Altera_Forum's avatar
Altera_Forum
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17 years ago

signed/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_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

So your method involves sign extending both 9 bit inputs to 18 bit? This means, you need four multiplier blocks instead of one, not a useful suggestion, to my opinion. I would rather use signed/unsigned inputs with altmult_add, as previously said.

P.S.: O.K., it's only two instead of one block, still a waste of resources.