Hi kt,

I'm not able to tell all simulators in the world that deal with verilog-AMS.
I'm able though to tell that AMS Designer (a Cadence tool) deals with Verilog-AMS very well. I am working with AMS Designer in the virtuoso use model as far as I'm concerned.

Verilog-AMS is a behavioral modeling language, not a SPICE level language. But using AMS Designer, you can simulate part of your design at transistor level, ysunig BSIM/PSP models along with digital RTL along with mised-signal models ... etc.

In other words, the Verilog-AMS language does not support BSIM but the AMS environment lets you do it.

Assuming I have understood your question ...

Cheers,
Riad.

It is possible to write BSIM4 in Verilog-A(MS); in fact, the next-generation MOSFET model "PSP" is released officially in Verilog-A (rather than C code for Spice3f5, as for BSIM4).

Some simulators are able to simulate transistor-level Verilog-A circuits just fine.