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	<= 	"0111111" when CURRENT_TIME="0000" else --0
							"0000110" when CURRENT_TIME="0001" else --1
							"1011011" when CURRENT_TIME="0010" else --2
							"1001111" when CURRENT_TIME="0011" else --3
							"1100110" when CURRENT_TIME="0100" else --4
							"1101101" when CURRENT_TIME="0101" else --5
							"1111101" when CURRENT_TIME="0110" else --6
							"0000111" when CURRENT_TIME="0111" else --7
							"1111111" when CURRENT_TIME="1000" else --8
							"1101111" when CURRENT_TIME="1001" else --9
							"1100011" 	;			
			
		DISP_ALARM 		<= 	"0111111" when ALARM_TIME="0000" else --0
							"0000110" when ALARM_TIME="0001" else --1
							"1011011" when ALARM_TIME="0010" else --2
							"1001111" when ALARM_TIME="0011" else --3
							"1100110" when ALARM_TIME="0100" else --4
							"1101101" when ALARM_TIME="0101" else --5
							"1111101" when ALARM_TIME="0110" else --6
							"0000111" when ALARM_TIME="0111" else --7
							"1111111" when ALARM_TIME="1000" else --8
							"1101111" when ALARM_TIME="1001" else --9
							"1100011" 	;	
	
	process (DISP_ALARM, SHOW_A, DISP_CURRENT) is
		begin
			if SHOW_A = '1' then
				DISPLAY <= DISP_ALARM;
			else 
				DISPLAY <= DISP_CURRENT;
			end if;
	end process;
	
	--DISPLAY		 <= DISP_ALARM when SHOW_A = '1' else DISP_CURRENT; 

	SOUND_ALARM	 <= '1' when DISP_ALARM = DISP_CURRENT else '0';
		
		
end RTL;