library IEEE;
use IEEE.STD_LOGIC_1164.all;
use IEEE.numeric_std.all;
use IEEE.std_logic_unsigned.all;

entity DDR is
	port (
			ALARM_TIME 		: in std_logic_vector (3 downto 0);
			CURRENT_TIME 	: in std_logic_vector (3 downto 0);
			SHOW_A			: in std_logic;
			-----
			DISPLAY			: out std_logic_vector (6 downto 0);
			SOUND_ALARM		: out std_logic
		);
end DDR;

architecture RTL of DDR is

	signal DISP_CURRENT	: std_logic_vector(6 downto 0);
	signal DISP_ALARM	: std_logic_vector(6 downto 0);
	
	begin
		DISP_CURRENT	<= 	"1000000" when CURRENT_TIME="0000" else
							"1111001" when CURRENT_TIME="0001" else
							"0100100" when CURRENT_TIME="0010" else
							"0110000" when CURRENT_TIME="0011" else
							"0011001" when CURRENT_TIME="0100" else
							"0010010" when CURRENT_TIME="0101" else
							"0000010" when CURRENT_TIME="0110" else
							"1111000" when CURRENT_TIME="0111" else
							"0000000" when CURRENT_TIME="1000" else
							"0010000" when CURRENT_TIME="1001" else
							"0011100"	;			
			
		DISP_ALARM 		<= 	"1000000" when ALARM_TIME="0000" else
							"1111001" when ALARM_TIME="0001" else
							"0100100" when ALARM_TIME="0010" else
							"0110000" when ALARM_TIME="0011" else
							"0011001" when ALARM_TIME="0100" else
							"0010010" when ALARM_TIME="0101" else
							"0000010" when ALARM_TIME="0110" else
							"1111000" when ALARM_TIME="0111" else
							"0000000" when ALARM_TIME="1000" else
							"0010000" when ALARM_TIME="1001" else
							"0011100"	;	
	
		process (SHOW_A) is
			begin
				if SHOW_A = '0' then
					DISPLAY <= DISP_CURRENT;
				else
					DISPLAY <= DISP_ALARM;
				end if;
		end process;
		
		process is
			begin
				if DISP_ALARM = DISP_CURRENT then
					SOUND_ALARM <= '1';
				else
					SOUND_ALARM <= '0';
				end if;
		end process;		
end RTL;