7734 - QuestaSim / ModelSim : How to use User-defined Radix?
Solution:
Normally, this appears gray by default. However, it is fully supported in QuestaSim / Modelsim Lattice Edition.
To enable this, a User-defined Radix needs to be set first before this option is enabled.
See the following command: radix define test {2'h0 "IDLE", 2'h1 "RUN"}
Once entered, it will now appear as an option: