Forum Discussion
Altera_Forum
Honored Contributor
Honored ContributorOptimal ALU
Dear all, I'm creating an ALU for a homemade NIOS II compatible processor with Quartus Prime, targeting the Cyclone V. I discovered that, depending on the operations ordering, the ALU has a differ...
Altera_ForumHonored Contributor
Honored ContributorDid you read Joysyb's document?
If you use timing requirements to specify the frequency at which your system should work (and if you don't, you should definitely start with that) then all combinations should be able to reach the same target frequency. If you just look at the fmax then even a tiny change in your code will give different results. With its default settings Quartus will just try to reach the target frequency and will stop optimizing once it reaches it.
