If you find bugs, have suggestions or any other problems, feel free to report an issue on the issue tracker or hit me up on IRC, I'm always on #emacs. Patches are welcome, too, just fork, work on a separate branch and open a pull request with it.

In case your bug is specific to a ROM, please send it to me via email or upload it on an OCH and share the link with me. Don't forget attaching a debug log as produced by customizing chip8-debug before running the ROM, with the output being saved to a *CHIP-8 debug* buffer.