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module top (
input clk,
output LED1, LED2, LED3, LED4, LED5
);
localparam LOG2DELAY = 22;
reg [LOG2DELAY-1:0] counter = 0;
reg [3:0] counter2 = 0;
reg state = 0;
always @(posedge clk) begin
counter <= counter + 1;
counter2 <= counter2 + !counter;
state <= state ^ !counter;
end
assign LED1 = state;
assign LED2 = 0;
assign LED3 = 0;
assign LED4 = 0;
assign LED5 = 1;
SB_WARMBOOT WB (
.BOOT(&counter2),
.S1(1'b 0),
.S0(1'b 1)
);
endmodule
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