module slave_1_tb(); reg clk, rst_n, slave_en; wire slave_done; wire [3:0] slave_out; slave_1 obey (clk, rst_n, slave_en, slave_done, slave_out); initial begin $dumpfile("slave_1_tb.vcd"); $dumpvars(0, slave_1_tb); rst_n = 0; slave_en = 0; #10; rst_n = 1; slave_en = 1; #40; slave_en = 0; #200; $finish; end always begin clk = 1'b1; #5; clk = 1'b0; #5; end endmodule