Nachos Code Distributions

The Java version of Nachos is available for you to download here: nachos-java.tar.gz (112 Kb gzipped tarfile). You can unpack this file using the command

  gzcat nachos-java.tar.gz | tar xf -
which will create the directory nachos. See the file README contained within the tarfile for information on using and compiling the code.

Each project group should download this code just once and place it under CVS control for the group to use. Other group members are certainly willing to download the code and look at it without checking it in to CVS. We will be setting up project groups and CVS repositories for each group soon; in the meantime, you should be reading through the code and trying to understand how it works.

You can also view a PDF version of the code here. Please do not print this out from campus printers. Purchase the reader instead.

Java Distributions

The Java version of Nachos now supports Java 1.5. Earlier versions of Java (1.3.1 and later) will probably also work, but we will now only be testing with Java 1.5, so we recommend you do the same.

MIPS Cross-compilers

Nachos executes user applications on a simulated MIPS computer. In order to compile these programs, you need a MIPS cross-compiler. One is already installed on the instructional machines; if you are not using an instructional machine, you must download and install the appropriate cross-compiler from this page.

Project Components

There are four projects. Each project has three components:
  1. A design document. You will meet with your TA to discuss your design about 7-10 days before each project (phase) of Nachos.
  2. Project code.
  3. Project group member evaluations.

Group Tools for Nachos Projects

General Project Information

Project Grading

The design document will be worth 40% of the project grade, and the code itself will be worth the other 60%. You must turn in your initial design document in order to get a grade for the project.

Project Deadlines

You should submit assignments as early as possible to avoid submission problems. You can submit multiple times, however, only the last submission will be graded.

Assignments (design docs, code, and group evaluations) are due by 11:59pm on the due date.

Autograder Queue