Hi, I would like to change the simulator from Icarus to modelsim. From the user guide, it said I can just change to "SIMULATOR ?=(modelsim)" or "SIMULATOR ?= (sim)" in sim/bin/makefile. But after my changes, it doesnt display the waveform in modelsim. If I wanna check the simulation waveform in modelsim, What should I type in the terminal?

Best regard
Dan

I used Isim, the free simulator from Xilinx in my OpenRISC tutorial.
See my blog: http://www.rte.se/blog/blogg-modesty-corex/isim-hdl-simulator

It was a good replacement for ModelSim.

I used the wrong link.
Here is the right one: http://www.rte.se/blog/blogg-modesty-corex/simulating-orpsoc-using-isim

You have to run the test using
make rtl-tests VCD=1 MGC_NO_VOPT=1
Now the vcd file will be created in sim/out directory
You can convert the vcd file into wlf file , open modelsim tool and open the wlf file to view the waveforms.

Or use gtkwave, which IMO is a much nicer tool to view waveforms in, to open the vcd.
http://gtkwave.sourceforge.net/