Another interesting facet of this is that it seems to be running AROS, rather than original AmigaOS. Given that it's able to play tons of games and demos tells me they've achieved a high level of compatibility with that project. I was unaware of how active it had been over the years. So, I could run a very Amiga-like environment on my desktop or laptop, without emulation...of course, being able to run Amiga demos and apps would require emulation, but it is pretty neat that the environment is still alive. It was fun to program for.
The CPU code is pretty cool https://github.com/copy/v86/blob/master/src/cpu.js