module tick_div4(
input wire clk,
input wire rst,
output reg tick
);
reg [1:0] cnt;
always @(posedge clk) begin
if (rst == 1) begin
tick <= 1'b0;
cnt <= 2'b0;
end
else begin
if (cnt == 2'b11) begin
tick <= ~tick;
cnt <= 0;
end
else begin
cnt <= cnt + 1;
tick <= 1'b0;
end
end
end
endmodule