Modelsim barfing on "oper_mux" in cycloneiv_hssi_atoms.v

I've made some progress. After using windows search in the /altera/13.0sp1 directory I found that "oper_mux" was in the modelsim_ase/altera/verilog/sgate library. Wonder how they missed that library requirement in the megawizard for the serial transceiver? Seems they've missed this for several years now, and several Q2 releases. Nice.

Once this was done, I also needed to add the 220model library as other dependencies were discovered as I peeled this rotten, fetid onion.

Then came dependencies for the Nios core. All-in-all it only took 2 work days to get this far. Marvelous.