The typical hello world is actually a CHIP 8 emulator, which is a type of VM that ran on an old calculator, the specifics of which elude me. It's got a tiny mem

The typical hello world is actually a CHIP 8 emulator, which is a type of VM that ran on an old calculator, the specifics of which elude me. It's got a tiny memory space, simple instructions and a handful of features, so it's the sort of thing you can get up and "running" with minimal effort. It lets you explore the high level concepts involved in running a "guest" system on some hosts, and tickles the challenge of synchronizing the timing and dealing with video and sound, without being overwhelming the way a physical console can be.