%Error-UNSUPPORTED: t/t_tri_compass_bad.v:16:12: Unsupported: tristate in top-level IO: '__pinNumber1'
                                               : ... In instance t
   16 |    sub sub(i, o);
      |            ^
                    ... For error description see https://verilator.org/warn/UNSUPPORTED?v=latest
%Error: Exiting due to
