library ieee; use ieee.std_logic_1164.all; library ieee; use ieee.numeric_std.all; entity add_134 is port ( result : out std_logic_vector(31 downto 0); in_a : in std_logic_vector(31 downto 0); in_b : in std_logic_vector(31 downto 0) ); end add_134; architecture augh of add_134 is signal carry_inA : std_logic_vector(33 downto 0); signal carry_inB : std_logic_vector(33 downto 0); signal carry_res : std_logic_vector(33 downto 0); begin -- To handle the CI input, the operation is '1' + CI -- If CI is not present, the operation is '1' + '0' carry_inA <= '0' & in_a & '1'; carry_inB <= '0' & in_b & '0'; -- Compute the result carry_res <= std_logic_vector(unsigned(carry_inA) + unsigned(carry_inB)); -- Set the outputs result <= carry_res(32 downto 1); end architecture;