Shift left, Shift right :       12

library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.NUMERIC_STD.ALL;

entity Shifter is
generic (
 n : natural := 8);
port( shift_left : in Std_Logic;
      A : in Std_Logic_Vector(n-1 downto 0) ;
      result : out Std_Logic_Vector(n-1 downto 0)
     );
end Shifter;