;  Copyright (C) 2000 Panagiotis Manolios

;  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 2 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, write to the Free Software
;  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

;  Written by Panagiotis Manolios who can be reached as follows.

;  Email: pete@cs.utexas.edu

;  Postal Mail:
;  Department of Computer Science
;  The University of Texas at Austin
;  Austin, TX 78701 USA

#|

What constitutes an instruction.

|#

(in-package "ACL2")

(defun Inst (opcode rc ra rb)
  (list 'Inst opcode rc ra rb))

(defmacro Inst-opcode () 1)

(defmacro Inst-rc () 2)

(defmacro Inst-ra () 3)

(defmacro Inst-rb () 4)