module tick_div4(
input wire clk,
input wire rst,
output reg tick
);
reg [1:0] cnt;
always @(posedge clk) begin
if(rst) begin
tick <= 1'b0;
cnt <= 1'b0;
end
else begin
if (cnt == 2'd3) begin
cnt <= 2'd0;
tick <= 1'b1; // pulse for exactly one cycle
end else begin
cnt <= cnt + 2'd1;
tick <= 1'b0;
end
end
end
endmodule