Subversion Repositories raytrac

--! @file fastmux.vhd

--! @brief Multiplexor.

--! @author Julián Andrés Guarín Reyes.

-- RAYTRAC

-- Author Julian Andres Guarin

-- fastmux.vhd

-- This file is part of raytrac.

-- 

--     raytrac 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 3 of the License, or

--     (at your option) any later version.

-- 

--     raytrac 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 raytrac.  If not, see <http://www.gnu.org/licenses/>.

--! Libreria de definicion de senales y tipos estandares, comportamiento de operadores aritmeticos y logicos.

library ieee;

--! Paquete de definicion estandard de logica. 

use ieee.std_logic_1164.all;

entity fastmux is

        generic (

                width : integer := 18

        );

        port (

                a,b:in std_logic_vector(width-1 downto 0);

                s:in std_logic;

                c: out std_logic_vector(width-1 downto 0)

        );

end entity;

--! @brief Definicion arquitectura del mux

--! @details El Mux esta descrito de manera estructural, instanciado bit por bit en la salida, multiplexores de un solo bit.

architecture fastmux_arch of fastmux is

begin

        muxgen:

        for i in 0 to width-1 generate

                c(i) <= (a(i) and not(s)) or (b(i) and s);

        end generate muxgen;

end fastmux_arch;