[thrtythreeforty]

The hardest part is toolchains, for two reasons. First, Verilator doesn't have complete SV language support, although it's gotten better. Second, hardware has a tendency to accumulate some of the most contorted build systems I've ever seen and most hardware engineers don't actually know how to extricate it.

Once it's actually successfully run through Verilator, it's a C++ interface. Very easy to integrate if your sim already has a notion of "clock tick."