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
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
soon; in the meantime, you should be reading through the code and
trying to understand how it works.
The Java version of Nachos only supports Java 1.3.1, as the security
manager and set of reserved keywords has changed in later versions.
Instructional machines already have 1.3.1 installed. For remote users,
you can download 1.3.1 here: http://java.sun.com/j2se/1.3/download.html
There are four projects. Each project has three components:
- A design document. You will meet with your TA to discuss your
design about 7-10 days before each project (phase) of Nachos.
- Project code.
- Project group member evaluations.
Group Tools for Nachos Projects
- Group Evaluation 'Journal' Tool
Use this to discuss how your project went with your current group.
(Note: YOU MUST FILL THIS OUT!)
- Design review signup
Signup for a design review meeting with your TA.
- Group Evaluations
Everyone in a group must fill this out, no more than a day after the
project is due.
General Project Information
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.
A cross-compiler is a compiler that runs on one architecture
but compiles to another architecture, e.g. a compiler that runs on x86
Solaris machines such as torus.cs but builds MIPS programs. You will
be making extensive use of MIPS cross-compilers this semester, unless
you actually run Nachos on a MIPS machine.
When you run gmake in the test directory, gmake will look for a
cross-compiler in the directory pointed at by the ARCHDIR environment
variable. If you are using an instructional machine of one of the
architectures we support, then this is automatic.
If you are not using an instructional machine for Nachos Phases 2-4,
you will need to:
We provide a few common cross-compilers, so most likely you
will not have to build one of your own:
- download the necessary cross-compiler, and
- set the ARCHDIR environment variable to point at the