I've now added support for loading server-side ROMs, so anyone can try it beyond the default EhBASIC ROM.
There are a number of ROMs available (just pick one in the bottom-right). A couple of games (or proof of concepts in the case of Invaders). All of the 65C02 source code for each ROM image is available in the repository (most is standard 6502 code).
Feel free to try it out (you will need a keyboard). If you have similar hardware, you could easily adapt the emulator to your build too. There is also a desktop version.
Link:
HBC-56 Emulator Online - BreakoutThe emulator source code is in the repository. Additionally, it makes use of my 6502 and TMS9918 emulator libraries which you might also find handy.
GitHub:
https://github.com/visrealm/hbc-566502 Library:
https://github.com/visrealm/vrEmu6502TMS9918A Library:
https://github.com/visrealm/vrEmuTms9918