MARS (official) MIPS Assembler and Runtime Simulator
MARS is a lightweight interactive development environment (IDE) for programming in MIPS assembly language, intended for educational-level use with Patterson and Hennessy's Computer Organization and Design.
It is available for you to download as an executable JAR file. Click the MARS v.4.5 link at right, under Releases, to access the download.
We have relocated the MARS website to https://dpetersanderson.github.io/ There are still a couple of display issues to work out but all website content is there. This includes all documentation and the JAR download. We are not experienced in github so if you know a way we can host the website in this MARS repository let us know.
This is the original MARS, developed by Pete Sanderson and Ken Vollmar. Developed while Pete was professor at Otterbein University and Ken was professor at Missouri State University. Both are now retired. This is a legacy application but is very stable and continues to be used by universities throughout the world as of 2024. The last release was MARS 4.5 in August 2014.
Until October 2024 the MARS website, including executable JAR file download, was hosted by Missouri State University. That is no longer the case. That's why it is here.
Warning
This is my community maintained fork version that merges useful PRs into the project for my personal use. You can use it if you want, but I'm not gonna maintain it much, so use it at your own risks.
This fork includes Flatlaf to allow for:
- Partial dark mode support
- Intellij theme support
- Native window decorations
- High DPI displays
- Automatic theme delection using jSystemThemeDetector
And more...
- dpetersanderson #10
- dpetersanderson #4
- dpetersanderson @11
- dpetersanderson #24
- dpetersanderson #26
- dpetersanderson #27
First, Install Java 25 on your system.
Choose a gradle wrapper base on your OS:
On Windows use ./gradlew.bat. Otherwise use ./gradlew.
Run the app with the ./gradlew run command.
Format it with the ./gradlew spotlessApply command.
Look at Mips examples here.
Obviously, thanks to Pete Sanderson for making the original app.
Thanks to Flatlaf for the legacy Java theming and modern display features support.
Thanks to Steven for contributing most of the PRs mentioned.
Thanks to Daniel Dimitrov for the directory persistence PR.
Thanks to Daniel Gyoerffy for the jSystemThemeDetector library.
Thanks to Google and Spotless for their java formatting tools.
This fork is also licensed under the original MIT License. Check LICENSE for details.