Configurable interrupt interval for the sound timer. Right now, only 22050 Hz audio at 2000-microsecond intervals works.
Remove Open Bus again. Stop synchronising controls so often, now that the audio variable latency problem is fixed.
Merge branch 'master' of https://github.com/ShadauxCat/CATSFC
Revert "Configurable interrupt interval for the sound timer. Right now, only 22050 Hz audio at 2000-microsecond intervals works."

This reverts commit 1beb671de1d39964ad3453e28fd48a117046a8cb.