Critical Issue
Description
This problem affects QDR-IV interfaces on Arria 10 devices, simulated with ModelSim-Altera Edition (Questa) version 10.3c.
QDR-IV simulations are likely to fail in ModelSim-AE version 10.3c.
Resolution
The workaround for this issue is to simulate the interface using ModelSim-AE version 10.1.
This issue is fixed in version 15.0.