If PHY Lite for Parallel Interfaces Intel® FPGA IP design example is generated using the Intel® Quartus® Prime Pro Edition Software version 21.1 or 21.2, you will encounter the Aldec Riviera-Pro simulation hang or fail to simulate. This problem was root caused in the Aldec Riviera-Pro version 2020.04, which the Intel® Quartus® Prime Pro Edition Software version 21.1 and 21.2 generates simulation files for.
This problem has been resolved in Aldec Riviera-PRO version 2021.4, which is supported in the Intel® Quartus® Prime Pro Edition Software version 21.3 and onwards. Regenerate your design with the updated Intel Quartus software version.