--   `Deep Thought', a softcore CPU implemented on a FPGA
--
--  Copyright (C) 2010 Markus Hofstaetter <markus.manrow@gmx.at>
--  Copyright (C) 2010 Martin Perner <e0725782@student.tuwien.ac.at>
--  Copyright (C) 2010 Stefan Rebernig <stefan.rebernig@gmail.com>
--  Copyright (C) 2010 Manfred Schwarz <e0725898@student.tuwien.ac.at>
--  Copyright (C) 2010 Bernhard Urban <lewurm@gmail.com>
--
--  This program is free software: you can redistribute it and/or modify
--  it under the terms of the GNU General Public License as published by
--  the Free Software Foundation, either version 3 of the License, or
--  (at your option) any later version.
--
--  This program is distributed in the hope that it will be useful,
--  but WITHOUT ANY WARRANTY; without even the implied warranty of
--  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
--  GNU General Public License for more details.
--
--  You should have received a copy of the GNU General Public License
--  along with this program.  If not, see <http://www.gnu.org/licenses/>.

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

use work.common_pkg.all;
use work.alu_pkg.all;
use work.extension_pkg.all;

entity alu is
	--some modules won't need all inputs
	port(
	--System inputs
	
			clk : in std_logic;
			reset : in std_logic;
	--operation inputs
			cond : in condition_t;
			op_group : in op_info_t;
			left_operand : in gp_register_t;
			right_operand : in gp_register_t;
			
            displacement : in gp_register_t;
			prog_cnt    : in instr_addr_t;
			brpr	    : in std_logic;
			
			op_detail : in op_opt_t;
			
			alu_state  : in alu_result_rec;
			pval		: in gp_register_t;
			pval_nxt    : in gp_register_t;
			
			alu_result : out alu_result_rec;
            addr : out word_t; --memaddr
            data : out gp_register_t; --mem data --ureg
			
			pinc : out std_logic;
			pwr_en : out std_logic;
			paddr : out paddr_t
		);
		
end alu;