examples/gowin/demo.v


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module demo (
	input clk,
	output [15:0] leds,
	output unused
);
	localparam PRESCALE = 20;
	reg [PRESCALE+3:0] counter = 0;
	always @(posedge clk) counter <= counter + 1;
	assign leds = 1 << counter[PRESCALE +: 4];
endmodule