initial begin
  string waveform;
  if($test$plusargs("LVM_DUMP_FSDB")) begin
    if(!$value$plusargs("LVM_FSDBNM=%0s", waveform))begin
      waveform = "test.fsdb"
    end

    if($test$plusargs("LVM_DUMP_SPLIT"))begin
      $fsdbAutoSwitchDumpfile(10000,waveform,0);
    end else begin
      $fsdbDumpfile(waveform);
    end
    $fsdbDumpvars(0, top, "+all")
    $fsdbDumpvars(3, top.u_apu_top, "+all")    

    //$dumpon;
    //$dumpoff;
    //$finish();
  end
end