ModelSim can be downloaded in different ways. It is included in Lattice-diamond, and in lattice radiant. On ubuntu with radiant is not working because I miss a library, so I use a docker to run modelsim with lattice diamond. Repository, the script run-vsim launch ModelSim Lattice version.

The steps are:

• Create the project with Lattice Diamond, and then create a document in ModelSim.
• Compile > Compile all
• The architectures and entities should be in minus
• At the input of an entity the not should be like: "not"(i_rst)
• Then Run simulation and you can see the wave.
• Be aware that all the timings are expressed in ps.