Registry_File

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

entity registry_file is
    port (
        register_address_1     : in std_logic_vector(4 downto 0);
        register_address_2     : in std_logic_vector(4 downto 0);
        register_write_address : in std_logic_vector(4 downto 0);
        register_write_data    : in std_logic_vector(31 downto 0);
        RegWrite               : in std_logic;

        register_output_1  : out std_logic_vector(31 downto 0);
        register_output_2  : out std_logic_vector(31 downto 0)

        --debug_write_output : out std_logic_vector(31 downto 0)
    );
end entity registry_file;

architecture dataflow of registry_file is
    -- Registry Array
    type register_array is array (0 to 31) of std_logic_vector(31 downto 0);
    signal registers: register_array := (others => (others => '0'));

    -- Address to Integer Conversion, REMOVED DUE TO OUT OF BOUNDS SIMULAITON BUG
    --signal Read_1_Address, Read_2_Address, Write_Address : integer := 0;
begin
    -- Debug Outputs
    --debug_write_output <= registers(to_integer(unsigned(register_write_address)));

    -- Address to Integer Conversion, REMOVED DUE TO OUT OF BOUNDS SIMULAITON BUG
    --Read_1_Address <= to_integer(unsigned(register_address_1));
    --Read_2_Address <= to_integer(unsigned(register_address_2));
    --Write_Address <= to_integer(unsigned(register_write_address));

    -- Read Outputs
    --register_output_1 <= registers(Read_1_Address);
    --register_output_2 <= registers(Read_2_Address);
    register_output_1 <= registers(to_integer(unsigned(register_address_1)));
    register_output_2 <= registers(to_integer(unsigned(register_address_2)));

    -- Register Write Logic
    registers(to_integer(unsigned(register_write_address))) <= register_write_data when (RegWrite = '1') and (to_integer(unsigned(register_write_address)) <= 30) and (to_integer(unsigned(register_write_address)) >= 0)
                                                               else registers(to_integer(unsigned(register_write_address)));

end dataflow;