A graphical simulator, assembler and debugger for the Intel 8085 microprocessor

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How to contribute

Code (patches)

You can submit patches for bug fixes or feature implementations. If you come up with patch for some new functionality then please log a ‘enhancement’ bug first. Check the existing list of bugs


The application now includes very basic user documentation. It is written in markdown syntax and converted to HTML as part of the installation. You can read it directly on GitHub or by clicking on Help -> Contents menu. If you wish to contribute to the documentation feel free to submit pull requests. Meanwhile we distribute some sample programs with our application to help users learn assembly programming. You can always contribute your own programs.


As with most Free software applications ours is mainly tested by user community. Please test the application as much as possible and file any bugs you find. You can focus the testing on a specific platform (ex. Windows) or specific area of application (ex. memory instructions). Following are some areas where more testing is needed:


Translation Status

Latest release is translated in 18 languages. Some of them are incomplete. You can help us complete translations or add a new one using weblate. Click above link for opening the weblate page.