OpenFPGA/yosys/examples/gowin/testbench.v

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module testbench;
reg clk;
initial begin
#5 clk = 0;
forever #5 clk = ~clk;
end
wire [15:0] leds;
initial begin
// $dumpfile("testbench.vcd");
// $dumpvars(0, testbench);
$monitor("%b", leds);
end
demo uut (
.clk (clk ),
`ifdef POST_IMPL
.\leds[0] (leds[0]),
.\leds[1] (leds[1]),
.\leds[2] (leds[2]),
.\leds[3] (leds[3]),
.\leds[4] (leds[4]),
.\leds[5] (leds[5]),
.\leds[6] (leds[6]),
.\leds[7] (leds[7]),
.\leds[8] (leds[8]),
.\leds[9] (leds[9]),
.\leds[10] (leds[10]),
.\leds[11] (leds[11]),
.\leds[12] (leds[12]),
.\leds[13] (leds[13]),
.\leds[14] (leds[14]),
.\leds[15] (leds[15])
`else
.leds(leds)
`endif
);
endmodule