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/* Binary counter displayed on LEDs (the 4 green ones on the right).
* Changes value about once a second.
*/
module top (
input clk,
output LED2,
output LED3,
output LED4,
output LED5
);
localparam BITS = 4;
localparam LOG2DELAY = 22;
reg [BITS+LOG2DELAY-1:0] counter = 0;
reg [BITS-1:0] outcnt;
always @(posedge clk) begin
counter <= counter + 1;
outcnt <= counter >> LOG2DELAY;
end
assign {LED2, LED3, LED4, LED5} = outcnt;
endmodule
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