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Altera_Forum's avatar
Altera_Forum
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17 years ago

Not enough LABs after small change

I have a project that uses a system built by the SOPC builder. We weren't getting the perf we wanted, and the critical paths were through an adder in the "burst" wrappers added. So, we made our own b...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

Ok, found the problem. One of the arbitrators created by the sopc builder uses an abnormally huge amount of space - 3339 LC's and 13424 registers. It use to use 59 and 42, respectively.

Not sure how to fix yet. There was a burst width mismatch, but after fixing that the same amount of area is still required.