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Online OR1K Emulator running Linux
JavaScript C HTML
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demos Update May 20, 2019
openrisc-sys @ c80026c Update May 6, 2019
riscv-sys @ cc6056e
test removed debug messages from test Jan 11, 2015
utils Fix filesystem builder May 4, 2017
.gitignore added downloaded and generated package files to .gitignore, re-added … Jan 7, 2015
.travis.yml Change License to Simplified BSD. The main developers agreed upon thi… Oct 24, 2014
index.html move demos to demo folder Jan 9, 2015



jor1k is a OpenRISC 1000 emulator written in JavaScript running Linux. It runs in almost any modern web browser. Have a try and see if it runs in your browser by opening the demo. More information can be found on the Wiki pages.


Project Links

  • Bugtracker to report any issues or feature requests
  • Wiki containing more detailed descriptions


  • The program is distributed under the terms of the Simplified BSD License. The license details can be found in the file ""
  • The ACE editor is BSD licensed.


Sebastian Macke


Gerard Braad
Ben Burns
Lawrence Angrave
Neelabh Gupta

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