PPT Slide

begin

count_up : process (clock)

variable count_value : natural := 0;

begin

if clock = ‘1’ then

count_value := (count_value + 1) mod 4;

q0 <= bit’val(count_value mod 2) after prop_delay;

q1 <= bit’val(count_value /2 ) after prop_delay;

end if;

end process;

end behaviour;