1# ym-opll
2
3Emulator for the Yamaha OPLL sound chip, also known as YM2413. Used in the Sega Master System FM sound unit expansion
4as well as the NES VRC7 mapper's expansion audio chip.
5
6VRC7 has the same FM core as YM2413 but VRC7 has 6 channels instead of 9, VRC7 doesn't have rhythm mode, and VRC7 has
7a different set of fixed instrument patches in instrument ROM.