How do you plan to solve it?
module tick_div4( input wire clk, input wire rst, output reg tick ); reg [1:0] cnt; always @(posedge clk) begin if(rst) begin tick = 0; cnt = 0; end else if(cnt==3) begin tick = 1; cnt = 0; end else begin tick = 0; cnt = cnt +1; end end endmodule