When trying to simulate an example design in Windows using ModelSim DE/PE 32-bit, I am receiving the below error:
Unified simulation does not work in Vivado 2014.3 due to the use of the vopt command, which is not a supported command in the DE/PE versions of ModelSim.
In order to simulate in Windows using ModelSim 32-bit PE/DE you will need to disable unified simulation.
To disable unified simulation set the following parameter:
set_param project.enableUnifiedSimulation 0If you do not want to manually set the parameter every time Vivado is launched, you can create an init.tcl script which includes the above command, and put it in the $XILINX_VIVADO/scripts directory.
ModelSim and Questa SE versions will work correctly with Unified simulation.
This issue will be fixed in a future Vivado release.