How do you plan to solve it?
`timescale 1ns / 1ps module tick_div4( input wire clk, input wire rst, output reg tick ); reg [1:0] cnt; always @(posedge clk) begin if (rst) begin cnt <= 0; tick <= 0; end else begin cnt <= cnt + 1; tick <= (cnt == 2'b11); end end endmodule