library IEEE;
use IEEE.std_logic_1164.all;
use IEEE.numeric_std.all;
use IEEE.STD_LOGIC_UNSIGNED.ALL;

entity sorter is
	Port( clk : in STD_LOGIC;
	      weight : in STD_LOGIC_VECTOR(11 downto 0);
	      reset  : in STD_LOGIC;
	      Grp1   : out STD_LOGIC_VECTOR(7 downto 0) := (others => '0');
	      Grp2   : out STD_LOGIC_VECTOR(7 downto 0) := (others => '0');
              Grp3   : out STD_LOGIC_VECTOR(7 downto 0) := (others => '0');
              Grp4   : out STD_LOGIC_VECTOR(7 downto 0) := (others => '0');
              Grp5   : out STD_LOGIC_VECTOR(7 downto 0) := (others => '0');
              Grp6   : out STD_LOGIC_VECTOR(7 downto 0) := (others => '0');
	      currentGrp : out STD_LOGIC_VECTOR(2 downto 0));
end sorter;

architecture Behavioral of sorter is

signal temp1 : unsigned(7 downto 0) := "00000000";
signal temp2 : unsigned(7 downto 0) := "00000000";
signal temp3 : unsigned(7 downto 0) := "00000000";
signal temp4 : unsigned(7 downto 0) := "00000000";
signal temp5 : unsigned(7 downto 0) := "00000000";
signal temp6 : unsigned(7 downto 0) := "00000000";


begin

process(clk, weight, reset)
begin
   if reset = '1' then
      Grp1 <= "00000000";
      Grp2 <= "00000000";
      Grp3 <= "00000000";
      Grp4 <= "00000000";
      Grp5 <= "00000000";
      Grp6 <= "00000000";
      temp1 <= "00000000";
      temp2 <= "00000000";
      temp3 <= "00000000";
      temp4 <= "00000000";
      temp5 <= "00000000";
      temp6 <= "00000000";
      currentGrp <= "000";
   else
      if rising_edge(clk) then
         if weight = "000000000000" then
            currentGrp <= "000";
         elsif(weight >= "000000000001" and weight <= "000011001000") then
            temp1 <= temp1 + '1';
            Grp1 <=  STD_LOGIC_VECTOR(temp1);
            currentGrp <= "001";
         elsif(weight >= "000011001001" and weight <= "000111110100") then
            temp2 <= temp2 + 1;
            Grp2 <= STD_LOGIC_VECTOR(temp2);
            currentGrp <= "010";
         elsif(weight >= "000111110101" and  weight <= "001100100000") then
            temp3 <= temp3 + 1;
	    Grp3 <= STD_LOGIC_VECTOR(temp3);
            currentGrp <= "011";
         elsif(weight >= "001100100001" and  weight <= "001111101000") then
            temp4 <= temp4 + 1;
            Grp4 <= STD_LOGIC_VECTOR(temp4);
            currentGrp <= "100";
         elsif(weight >= "001111101001" and  weight <= "011111010000") then
            temp5 <= temp5 + 1;
            Grp5 <= STD_LOGIC_VECTOR(temp5);
            currentGrp <= "101";
         elsif weight > "011111010000" then
            temp6 <= temp6 + 1;
            Grp6 <= STD_LOGIC_VECTOR(temp6);
            currentGrp <= "110";
         end if;
      end if;
   end if;

end process;
end Behavioral;