| module testbench; | |
| reg clk; | |
| initial begin | |
| // $dumpfile("testbench.vcd"); | |
| // $dumpvars(0, testbench); | |
| #0 clk = 0; | |
| repeat (10000) begin | |
| #5 clk = 1; | |
| #5 clk = 0; | |
| end | |
| $display("OKAY"); | |
| end | |
| reg [1:0] in = 0; | |
| reg z_p; | |
| wire z; | |
| always @(posedge clk) begin | |
| in <= in + 1; | |
| end | |
| always @* | |
| z_p <= in[0] ~& in[1]; | |
| top uut (in[0],in[1],z); | |
| assert_dff z_test(clk,z,z_p); | |
| endmodule |