library ieee;
use ieee.std_logic_1164.all;

entity Lab5Part3 is
	port(SW : IN STD_LOGIC_VECTOR(9 DOWNTO 0);
			HEX0, HEX1, HEX2, HEX3 : OUT STD_LOGIC_VECTOR(6 DOWNTO 0));

END Lab5Part3;

ARCHITECTURE STRUCTURE OF LAB5PART3 IS

	SIGNAL D		 : STD_LOGIC_VECTOR(6 DOWNTO 0);
	SIGNAL E		 : STD_LOGIC_VECTOR(6 DOWNTO 0);
	SIGNAL ONE 	 : STD_LOGIC_VECTOR(6 DOWNTO 0);
	SIGNAL ZERO  : STD_LOGIC_VECTOR(6 DOWNTO 0);
	SIGNAL S0	 : STD_LOGIC_VECTOR(6 DOWNTO 0);
	SIGNAL S1    : STD_LOGIC_VECTOR(6 DOWNTO 0);
	SIGNAL S2    : STD_LOGIC_VECTOR(6 DOWNTO 0);
	SIGNAL S3    : STD_LOGIC_VECTOR(6 DOWNTO 0);

	BEGIN

	D 	  <= "0100001";
	E    <= "0000110";
	ONE  <= "1111001";
	ZERO <= "1000000";


	WITH SW(1 downto 0) SELECT


		S0 <=   D	 WHEN "00",
				  E    WHEN "01",
				  ONE  WHEN "10",
				  ZERO WHEN "11";

	WITH SW(3 downto 2) SELECT

      S1 <=   D	 WHEN "00",
				  E    WHEN "01",
				  ONE  WHEN "10",
				  ZERO WHEN "11";

	WITH SW(5 downto 4) SELECT

		S2 <=   D	 WHEN "00",
				  E    WHEN "01",
				  ONE  WHEN "10",
				  ZERO WHEN "11";

	WITH SW(7 downto 6) SELECT

		S3 <=   D	 WHEN "00",
				  E    WHEN "01",
				  ONE  WHEN "10",
				  ZERO WHEN "11";

	WITH SW(9 downto 8) SELECT

      HEX0 <= S0	WHEN "00",
				  S1  WHEN "01",
				  S2  WHEN "10",
				  S3  WHEN "11";

	WITH SW(9 downto 8) SELECT

		HEX1 <= S1	WHEN "00",
				  S2  WHEN "01",
				  S3  WHEN "10",
				  S0  WHEN "11";

	WITH SW(9 downto 8) SELECT

	   HEX2 <= S2	WHEN "00",
				   S3  WHEN "01",
				   S0  WHEN "10",
				   S1  WHEN "11";

	WITH SW(9 downto 8) SELECT

		HEX3 <= S3	WHEN "00",
				  S0  WHEN "01",
				  S1  WHEN "10",
				  S2  WHEN "11";


				 END STRUCTURE;