`timescale 1ns/1ns module tb_dffe(); reg clk = 0; reg en = 0; reg d = 0; wire q; dffe uut(.clk(clk),.d(d),.en(en),.q(q)); always #(5) clk <= !clk; initial begin $dumpfile("tb_dffe"); $dumpvars(0,tb_dffe); #10 d = 1; #10 d = 0; #10 d = 1; #10 d = 0; #10 en = 1; #10 d = 1; #10 d = 0; #10 d = 1; #10 d = 0; #10 d = 1; #10 d = 0; #10 $finish; end endmodule