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+--------------------------------------------------------------------------
+--
+--  Copyright (C) 1993, Peter J. Ashenden
+--  Mail:	Dept. Computer Science
+--		University of Adelaide, SA 5005, Australia
+--  e-mail:	petera@cs.adelaide.edu.au
+--
+--  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 1, 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, write to the Free Software
+--  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+--
+--------------------------------------------------------------------------
+--
+--  $RCSfile: alu.vhdl,v $  $Revision: 2.1 $  $Date: 1993/11/02 18:50:25 $
+--
+--------------------------------------------------------------------------
+--
+--  Entity declaration for ALU.
+--
+
+
+use work.dlx_types.all,
+    work.alu_types.all;
+
+entity alu is
+  generic (Tpd : Time;
+           tag : string := "";
+           origin_x, origin_y : real := 0.0);
+  port (s1 : in dlx_word;
+      	s2 : in dlx_word;
+	result : out dlx_word;
+	latch_en : in bit;
+	func : in alu_func;
+	zero, negative, overflow : out bit);
+end alu;