Anyone else having trouble getting Adventure Construction Set to run? (Seeing ACS in the list brings back so many memories)
One of the things on my todo list is to use websockets or something to ship the emulation log back to the server and compare against an independent (and presumably better tested) 6502 emulator. From there I can detect inconsistencies and fix the JS implementation. As I side effect I can build up a set of (hopefully) comprehensive test vectors that anyone writing a 6502 emulator can use to validate their implementation.
An explanation of how to fit it into a non-C64 emulator:
http://www.softwolves.com/arkiv/cbm-hackers/7/7114.html
Mirror of the actual file: