License
*******

Pintos, including its documentation, is subject to the following license:

     Copyright © 2004, 2005, 2006 Board of Trustees, Leland Stanford Jr. University.  All rights reserved.

     Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the ``Software''), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

     The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

     THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

A few individual files in Pintos were originally derived from other projects, but they have been extensively modified for use in Pintos. The original code falls under the original license, and modifications for Pintos are additionally covered by the Pintos license above.

In particular, code derived from Nachos is subject to the following license:

     Copyright © 1992-1996 The Regents of the University of California. All rights reserved.

     Permission to use, copy, modify, and distribute this software and its documentation for any purpose, without fee, and without written agreement is hereby granted, provided that the above copyright notice and the following two paragraphs appear in all copies of this software.

     IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

     THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS ON AN ``AS IS'' BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.

Code derived from MIT's 6.828 course code is subject to the following license:

     Copyright © 1997 Massachusetts Institute of Technology

     This software is being provided by the copyright holders under the following license. By obtaining, using and/or copying this software, you agree that you have read, understood, and will comply with the following terms and conditions:

     Permission to use, copy, modify, distribute, and sell this software and its documentation for any purpose and without fee or royalty is hereby granted, provided that the full text of this NOTICE appears on ALL copies of the software and documentation or portions thereof, including modifications, that you make.

     THIS SOFTWARE IS PROVIDED ``AS IS,'' AND COPYRIGHT HOLDERS MAKE NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, COPYRIGHT HOLDERS MAKE NO REPRESENTATIONS OR WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF THE SOFTWARE OR DOCUMENTATION WILL NOT INFRINGE ANY THIRD PARTY PATENTS, COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS. COPYRIGHT HOLDERS WILL BEAR NO LIABILITY FOR ANY USE OF THIS SOFTWARE OR DOCUMENTATION.

     The name and trademarks of copyright holders may NOT be used in advertising or publicity pertaining to the software without specific, written prior permission. Title to copyright in this software and any associated documentation will at all times remain with copyright holders. See the file AUTHORS which should have accompanied this software for a list of all copyright holders.

     This file may be derived from previously copyrighted software. This copyright applies only to those changes made by the copyright holders listed in the AUTHORS file. The rest of this file is covered by the copyright notices, if any, listed below.