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-- サイコロデコーダサンプル
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LIBRARY IEEE;
USE IEEE.std_logic_1164.ALL;
USE IEEE.std_logic_unsigned.ALL;

ENTITY TEST7442 IS
  PORT(
    IN_A  : IN std_logic;
    IN_B  : IN std_logic;
    IN_C  : IN std_logic;
    IN_D  : IN std_logic;
    LED_A : out std_logic;
    LED_B : out std_logic;
    LED_C : out std_logic;
    LED_D : out std_logic;
    LED_E : out std_logic;
    LED_F : out std_logic;
    LED_G : out std_logic
    );
END TEST7442;

ARCHITECTURE rtl of TEST7442 IS
  SIGNAL number : std_logic_vector(3 downto 0);
BEGIN
  -- numberの0ビット目はA
  number(0) <= IN_A;
  -- numberの1ビット目はB
  number(1) <= IN_B;
  -- numberの2ビット目はC
  number(2) <= IN_C;
  -- numberの3ビット目はD
  number(3) <= IN_D;
  LED_A <= '1' when number = 0 else
           '0' when number = 1 else
           '1' when number = 2 else
           '0' when number = 3 else
           '1' when number = 4 else
           '0' when number = 5 else
           '1';

  LED_B <= '0' when number = 0 else
           '1' when number = 1 else
           '0' when number = 2 else
           '1' when number = 3 else
           '1' when number = 4 else
           '1' when number = 5 else
           '1';

  LED_C <= '0' when number = 0 else
           '1' when number = 1 else
           '0' when number = 2 else
           '1' when number = 3 else
           '1' when number = 4 else
           '1' when number = 5 else
           '1';

  LED_D <= '0' when number = 0 else
           '0' when number = 1 else
           '1' when number = 2 else
           '1' when number = 3 else
           '1' when number = 4 else
           '1' when number = 5 else
           '1';

  LED_E <= '0' when number = 0 else
           '0' when number = 1 else
           '1' when number = 2 else
           '1' when number = 3 else
           '1' when number = 4 else
           '1' when number = 5 else
           '1';

  LED_F <= '0' when number = 0 else
           '0' when number = 1 else
           '0' when number = 2 else
           '0' when number = 3 else
           '0' when number = 4 else
           '1' when number = 5 else
           '1';

  LED_G <= '0' when number = 0 else
           '0' when number = 1 else
           '0' when number = 2 else
           '0' when number = 3 else
           '0' when number = 4 else
           '1' when number = 5 else
           '1';
end rtl;