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--              16 bits ALU INTERFACE

--

--      Purpose: This package defines types and constants for interfacing with the 16 bits ALU.

library IEEE;

use IEEE.STD_LOGIC_1164.all;

package ALU_INT is

        -- Op codes of the ALU

        type ALU_OPCODE is (bXOR, bAND, bOR, bNOT, SADD, UADD, SSUB, USUB, LSHIFT, RSHIFT, NOP);

        -- Limits of a 16 bit representation

        constant MAX_SIGNED:integer := (2**15)-1;

        constant MIN_SIGNED:integer := -(2**15);

        constant MAX_UNSIGNED:integer := (2**16)-1;

end ALU_INT;

package body ALU_INT is

end ALU_INT;