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Working on Nachos with Eclipse

Eclipse is a very powerful IDE and has a lot of features which help develop Java applications. The version I am using is Helios.

Setting up Project

1. Download and install Java
2. Download and install Eclipse
3. Start Eclipse
4. File > New > Java Project
5. Give it a project name (e.g. "nachos"), under "Project Layout", choose "Use project folder as root for sources and class files"
6. Extract nachos into its own folder (nachos/ with subfolders nachoes/ag, nachos/machine, .. etc)
7. Copy or move this folder into the new folder you created for your Eclipse workspace.
8. Select the "nachos" project from the "Package Explorer" on the left panel of Eclipse and press "F5" to refresh and see the Nachos files.

Compiling and Running

1. Eclipse will automatically continuously compile your code
2. You will have to copy a required "nachos.conf" file into the root project folder.
3. The class you want to run is "nachos.machine.Machine", to run this, find it in the "Package Explorer", right click on it and "Run As > Java Application".

Tips

• Ctrl+Click-ing on a reference/method/class will take you to it's delcaration.
• Ctrl+Space is a great hotkey that does a lot of VERY useful things!
• If you want to pass in command line arguments to a program, you can right click on it and edit the "Run As > Run Configuration" and look at the "Arguments" pane.
• You can enable breakpoints and run the program in debug mode from eclipse by following the above Running instructions but using "Debug As > ..." instead. For command line arguments, use "Debug As > Debug Configuration" (see above tip).