Subversion Repositories raytrac

library ieee;

use ieee.std_logic_1164.all;

package arithpack is

        component fastmux

        generic ( w : integer := 32 );

        port (

                s : in std_logic;

                mux0,mux1 : in std_logic_vector (w-1 downto 0);

                muxS : out std_logic_vector (w-1 downto 0)

        );

        component r_a18_b18_smul_c32_r

        port (

                aclr,clock:in std_logic;

                dataa,datab:in std_logic_vector (17 downto 0);

                result: out std_logic_vector(31 downto 0)

        );

        end component;

        component cla_logic_block

        generic ( w: integer:=4);

        port (

                p,g:in std_logic_vector(w-1 downto 0);

                cin:in std_logic;

                c:out std_logic_vector(w downto 1)

        );

        end component;

        component rca_logic_block

        generic ( w : integer := 4);

        port (

                p,g: in std_logic_vector(w-1 downto 0);

                cin: in std_logic;

                c: out std_logic_vector(w downto 1)

        );

        end component;

        component adder

        generic (

                w : ingeter := 4;

                carry_logic := "CLA";

                subtractor_selector := "YES";

        );

        port (

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

                s,ci    :       in      std_logic;

                result  :       out std_logic_vector (w-1 downto 0);

                cout    :       out std_logic

        );

        end component;

end package;