Subversion Repositories cowgirl

library ieee;

use ieee.std_logic_1164.all;

entity prog_rom is port (

  input:        in std_logic_vector(15 downto 0);

  output:       out std_logic_vector(15 downto 0)

  );

end;

architecture rom_arch of prog_rom is

begin

  process(input)

  begin

    case input is

      when "0000000000000000" =>        -- these are adds because otherwise

        output <= "0010000000000000";   -- it'll never get out of idle

      when "0000000000000001" =>

        output <= "0010000000000000";

      when "0000000000000010" =>

        output <= "0100000000001100";   --lli 6

      when "0000000000000011" =>

        output <= "0100000000000001";   -- lui 0

      when "0000000000000100" =>

        output <= "0100001000000100";   -- lli 2

      when "0000000000000101" =>

        output <= "0100001000000001";   -- lui 0

      when "0000000000000110" =>

        output <= "0010010000001000";   -- add r2 <- r0 + r1

        --when "0000000000001000" =>

        --output <= "0011000001010011";

        --when "0000000000001001" =>

        --output <= "0011000001010100";

        --when "0000000000001010" =>

        --output <= "0011000001010101";

        --when "0000000000001011" =>

        --output <= "1000000001000000";

        --when "0000000000001100" =>

        --output <= "1001000001000000";

        --when "0000000000001101" =>

        --output <= "1010000001000000";

        --when "0000000000001110" =>

        --output <= "1010000001000001";

        --when "0000000000001111" =>

        --output <= "0101000000000000";

        --when "0000000000010000" =>

        --output <= "0101000000000001";

        --when "0000000000010001" =>

        --output <= "0101000000000010";

      when others =>

        output <= "1111000000000000";

    end case;

  end process;

end;