--Mealy State Machine with Registered Outputslibrary ieee;use ieee.std_logic_1164.all;entity mealy1 is port(                 clk, rst: in std_logic;                 id: in std_logic_vector(3 downto 0);                  y: out std_logic_vector(1 downto 0));end mealy1;architecture archmealy of mealy1 istype states is (state0, state1, state2, state3, state4);signal state: states;beginmoore: process (clk, rst)begin           if rst='1' then              state <= state0;            y <= "00";        elsif (clk'event and clk='1') thencase state iswhen state0 =>          if id = x"3" then            state <= state1;           y <= "10";           else            state <= state0;            y <= "00";            end if; when state1 =>           state <= state2;           y <= "11";when state2 =>           if id = x"7" then           state <= state3;             y <= "10";            else            state <= state2;            y <= "11";         end if;when state3 =>            if id < x"7" then            state <= state0;               y <= "00";             elsif id = x"9" then             state <= state4;                 y <= "11";            else                state <= state3;                 y <= "10";          end if;when state4 =>               if id = x"b" then                 state <= state0;                     y <= "00";                else                 state <= state4;                  y <= "11";                    end if;                end case;                end if;               end process;end archmealy;