meno.vhd

来自「simple thermometr in vhdl」· VHDL 代码 · 共 58 行

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-- Company: 
-- Engineer: 
-- 
-- Create Date:    22:37:02 11/20/2007 
-- Design Name: 
-- Module Name:    ena - Behavioral 
-- Project Name: 
-- Target Devices: 
-- Tool versions: 
-- Description: 
--
-- Dependencies: 
--
-- Revision: 
-- Revision 0.01 - File Created
-- Additional Comments: 
--
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library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.STD_LOGIC_ARITH.ALL;
use IEEE.STD_LOGIC_UNSIGNED.ALL;

---- Uncomment the following library declaration if instantiating
---- any Xilinx primitives in this code.
--library UNISIM;
--use UNISIM.VComponents.all;

entity meno is
    Port ( clk : in  STD_LOGIC;
           add_linea : in  STD_LOGIC_VECTOR (8 downto 0);
           D_OUT : out  STD_LOGIC_VECTOR (18 downto 0));
end meno;

architecture Behavioral of meno is

begin

process(clk,add_linea)
begin

if ( clk'event and clk ='1') then
   case add_linea is



when "011101110" => D_OUT <= "1111111111111111111";
when "011101111" => D_OUT <= "1111111111111111111";
when "011110000" => D_OUT <= "1111111111111111111";
when "011110001" => D_OUT <= "1111111111111111111";
     when others => D_OUT <= "0000000000000000000";
   end case;
end if;
end process;

end Behavioral;