// This is how a vera shell is connected
interface_ex vshell(
 .SystemClock            (clk),
 .\sample_if.clock       (clk),
 .\sample_if.reset       (rst),
 .\sample_if.enable      (counter_en),
 .\sample_if.cout        (counter),
 .\sample_if.data        (data),
 .\sample_if.ddr_data_in (ddr_data_in)
);