module tick_div4(
input wire clk,
input wire rst,
output reg tick
);
reg [1:0] count;
always @(posedge clk) begin
if(rst) begin
count<=2'b00;
tick<=1'b0;
end
else begin
if(count==2'b11)begin
count<=2'b00;
tick<=1'b1;
end else begin
count<=count+1'b1;
tick<=1'b0;
end
end
end
endmodule