`default_nettype none module coax_tx_distorter_tb; reg clk = 0; initial begin forever begin #1 clk <= ~clk; end end reg active_input = 0; reg tx_input = 0; coax_tx_distorter #( .CLOCKS_PER_BIT(8) ) dut ( .clk(clk), .active_input(active_input), .tx_input(tx_input) ); initial begin $dumpfile("coax_tx_distorter_tb.vcd"); $dumpvars(0, coax_tx_distorter_tb); #16; active_input = 1; tx_input = 1; #8; tx_input = 0; #8; tx_input = 1; #8; tx_input = 0; #8; tx_input = 1; #8; tx_input = 0; active_input = 0; #32; $finish; end endmodule