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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

Tricky, I recommend you do your homework on this one. The lower n-bit of the result of n-bit by n-bit multiplication is indeed the same whether signed or not, but the top n-bit aren't. And no, it's not trivial to get them.