`timescale 1ns/1ns module tb_fifo() reg sys_clk; reg sys_rst; always #10 sys_clk = ~sys_clk; initial begin sys_clk <= 1'b0; sys_rst <= 1'b0; #50 sys_rst <= 1'b1; end test_fifo u_test_fifo( .sys_clk(sys_clk), .sys_rst(sys_rst) ); endmodule