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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;