The changes in the Plus version are legit - he hooked up LFORE (reset phase of ALFO and PLFO on key-on) and SDIR (disable effects of envelope, LFO, and TL register). No idea which song(s) those would affect though - I added printfs for those things and ran through a bunch of SSFs and they never went off.
Also, I guess the question becomes "how do I credit this when I add these changes to MAME"? =)
