My goal with these ‘Hellorld’-style programs is just to show how one might code, assemble, compile, link, etc on various platforms, some of which may be uncommon or obscure. It’s not totally clear to me yet how I’ll organize this, so some things may move around a bit as I add more.
See the Hellorld! page on the Centurion Computer wiki. The short version is that it was a “happy mistake” made when manually typing a machine-code version of the venerable “Hello, World!” program into the Centurion. You can watch the original Hellorld! video on YouTube (the main bit starts at 17:33).
Feel free to contact me with any questions, comments, or feedback.