library ieee;
use ieee.std_logic_1164.all;

-------------------------------------------------------
-- Declare all basic components.
-------------------------------------------------------
package parts is

component dff
  port (d, clk, reset : in std_logic;
        q             : out std_logic);
end component;

component mux41
  port (din:  in  std_logic_vector (0 to 3);
        sel:  in  std_logic_vector (1 downto 0);
        dout: out std_logic);
end component;

component mux441
  port (din0: in  std_logic_vector (0 to 3);
        din1: in  std_logic_vector (0 to 3);
        din2: in  std_logic_vector (0 to 3);
        din3: in  std_logic_vector (0 to 3);
        sel:  in  std_logic_vector (1 downto 0);
        dout: out std_logic_vector (0 to 3));
end component;

component regN
  generic (size: integer := 8);
  port (d: in std_logic_vector (size-1 downto 0);
        load, reset: in std_logic;
        q: out std_logic_vector (size-1 downto 0));
end component;

component tbufN
  generic (size: integer := 8);
  port (din: in std_logic_vector (size-1 downto 0);
        en: in std_logic;
        dout: out std_logic_vector (size-1 downto 0));
end component;

component counterN
  generic (size: integer := 4);
  port (clk, reset, ld, ce : in std_logic;
        d : in std_logic_vector(size-1 downto 0);
        q : out std_logic_vector(size-1 downto 0));
end component;

component equalN
  generic (size: integer := 4);
  port (din0, din1: in std_logic_vector (Size-1 downto 0);
        o: out std_logic);
end component;

component decoder3to8
  port (din: in std_logic_vector (2 downto 0);
        dout: out std_logic_vector (7 downto 0));
end component;

component mux21N
  generic (size: integer := 4);
  port (din0, din1: in std_logic_vector (Size-1 downto 0);
        sel : in std_logic;
        dout: out std_logic_vector(Size-1 downto 0));
end component;

component cmpN
  generic (size: integer := 4);
  port (dinA, dinB: in std_logic_vector (Size-1 downto 0);
        lt, eq, gt : out std_logic );
end component;

end parts;