%Error: t/t_specparam_unsup.v:14:8: Can't find definition of variable: 'tdevice_PU'
   14 |       #tdevice_PU PoweredUp = 1'b1;
      |        ^~~~~~~~~~
        ... See the manual at https://verilator.org/verilator_doc.html?v=latest for more assistance.
%Error: Exiting due to