Error: (vlog-7) Failed to open design unit file

Description

Due to simulation models not being installed along with the Quartus^® Prime Pro Edition Software, an error such as:

Error: (vlog-7) Failed to open design unit file "C:/altera_pro/26.1.1/quartus/eda/sim_lib/220model.v" in read mode

may occur during simulation.

The root cause of missing files is that “EDA libraries” are not installed properly during installation of the Quartus^® Prime Pro Edition Software.

Resolution

To fix this problem, make sure “EDA Libraries” has been checked and installed properly during installation of the Quartus^® Prime Pro Edition Software, as shown in the screenshot below.