Source code for Arduino Altair 8800 simulator
For details about the simulator see:
https://www.hackster.io/david-hansel/arduino-altair-8800-simulator-3594a6
For extending the simulator with external harware see: https://github.com/dhansel/Altair8800-IOBus
Support for Teensy 3.6 host implemented by Dirk Herrendoerfer: https://github.com/dherrendoerfer/altair-8800-again
Please post any questions or issues in: https://groups.google.com/forum/#!forum/altair-duino