SUBDESIGN sec_cnt
(
	clk : INPUT;
	second : OUTPUT;
)
VARIABLE
	count[25..0] : DFF;
BEGIN
	count[].clk = clk;
	IF ((count[].q == 5)) THEN
		count[].d = 0;
		second = VCC;
	ELSE
		count[].d = count[].q + 1;
		second = GND;
	END IF;
END;