Honored Contributor
Honored ContributorFYI: I'm only using 13.1 because they *DROPPED SUPPORT* for Stratix III an all subsequent versions. The Stratix III was once their "Flagship" product! And now they don't support it! In fact, even in V13, *many* of the tools specifically don't work for Stratix III. That's some of the reason I start off with a somewhat bad attitude about Altera and Quartus in particular. They've never supported prior versions of Quartus once they move on, and current versions of Quartus do not support the FPGA that we have many, MANY thousands of dollars invested into. Grrrr...
I also maintained copies of some previous versions of Quartus documentation, and I was unable to find any reference to "frequency_counter" there either. It seems to be a complete orphan. The real problem is that even after I reverse engineer the IP, I find that it is ridiculously easy to put it into a state where there is no recovery except for power-down / power-up. Why would they ever put such a completely untested item in their library? And it caused me to question whether I should be using any of their other IP, whether it has instructions or not. Things like this give me the impression that Altera really just doesn't care.
