Subversion Repositories parallel_search_for_maximum_weight

library ieee;

use ieee.std_logic_1164.all;

use work.basic_size.all;

entity carry_cell_NAND is

port(

        a:      IN std_logic;

        b:      IN std_logic;

        choose_prev_bar : in std_logic;

        found_prev_bar          : in std_logic;

        choose_cur              : out std_logic;

        found_cur               : out std_logic

);

end carry_cell_NAND;

architecture behav of carry_cell_NAND  is

SIGNAL  found:            std_logic;

SIGNAL  choose:           std_logic;

SIGNAL  gci:              std_logic;

SIGNAL  gfi:              std_logic;

begin

                        gci             <=  (NOT a) NOR b;

                        gfi             <=   ( a XNOR b);

                        choose_cur      <=  choose_prev_bar NAND (found_prev_bar NAND gci);

                        found_cur       <=  found_prev_bar NAND gfi;

end behav;