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--

-- Registro concencional para implementación del Program Counter (PC)

--

-- Licencia: Copyright 2008 Emmanuel Luján

--

--      This program is free software; you can redistribute it and/or

--      modify it under the terms of the GNU General Public License as

--      published by the Free Software Foundation; either version 2 of

--      the License, or (at your option) any later version. This program

--      is distributed in the hope that it will be useful, but WITHOUT

--      ANY WARRANTY; without even the implied warranty of MERCHANTABILITY

--      or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public

--      License for more details. You should have received a copy of the

--      GNU General Public License along with this program; if not, write

--      to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,

--      Boston, MA 02110-1301 USA.

-- 

-- Autor:       Emmanuel Luján

-- Email:       info@emmanuellujan.com.ar

-- Versión:    1.0

--

library IEEE;

use IEEE.STD_LOGIC_1164.all;

use IEEE.numeric_std.all;

entity REG is

        generic (N: NATURAL); -- N = tam. dir.    

        port(

                CLK             : in    STD_LOGIC;                      -- Reloj                        

                RESET           : in    STD_LOGIC;                      -- Reset asincrónico

                DATA_IN         : in    STD_LOGIC_VECTOR(N-1 downto 0);  -- Datos de entrada

                DATA_OUT        : out   STD_LOGIC_VECTOR(N-1 downto 0)   -- Datos de salida

        );

end REG;

architecture REG_ARC of REG is

begin

        SYNC_REG:

                process(CLK,RESET,DATA_IN)

                begin

                        if(RESET = '1') then

                                DATA_OUT <= (others => '0');

                        elsif rising_edge(CLK) then

                                DATA_OUT <= DATA_IN;

                        end if;

                end process;

end REG_ARC;