Critical Issue
Description
When simulating the Quartus II software version 14.1 in Mentor Graphics ModelSim SE version 10.3c or 10.3d, designs including cascading phase-locked loops (PLLs) and targeting the Arria 10 device cause simulation errors. Downstream PLLs do not lock and generate incorrect frequencies.
Resolution
You must use the debug version (-novopt
) when elaborating in Modelsim.