Subversion Repositories simple_fm_receiver

-- ------------------------------------------------------------------------

-- Copyright (C) 2004 Arif Endro Nugroho

-- All rights reserved.

-- 

-- Redistribution and use in source and binary forms, with or without

-- modification, are permitted provided that the following conditions

-- are met:

-- 

-- 1. Redistributions of source code must retain the above copyright

--    notice, this list of conditions and the following disclaimer.

-- 2. Redistributions in binary form must reproduce the above copyright

--    notice, this list of conditions and the following disclaimer in the

--    documentation and/or other materials provided with the distribution.

-- 

-- THIS SOFTWARE IS PROVIDED BY ARIF ENDRO NUGROHO "AS IS" AND ANY EXPRESS

-- OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

-- WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

-- DISCLAIMED. IN NO EVENT SHALL ARIF ENDRO NUGROHO BE LIABLE FOR ANY

-- DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

-- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

-- OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

-- HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

-- STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

-- ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

-- POSSIBILITY OF SUCH DAMAGE.

-- 

-- End Of License.

-- ------------------------------------------------------------------------

library IEEE;

use IEEE.STD_LOGIC_1164.ALL;

entity fulladder is

   port (

     addend   : in   bit;

     augend   : in   bit;

     carry_in : in   bit;

     sum      : out  bit;

     carry    : out  bit

     );

end fulladder;

architecture data_flow of fulladder is

begin

     sum    <= ((addend xor augend) xor carry_in);

     carry  <= ((addend and augend) or (carry_in and (addend or augend)));

end data_flow;