FM Operator Type-LLP
Almost same as YM2413B, except preset voices.
FM(2op) 9ch (3ch of them are shared with 5ch rhythm)
15 preset voices in ROM, 1 user specified voice
Preset voices:
DIP18
Pinout
A lot of Pachinko/Pachislot machines.
Links
http://madscient.hatenablog.jp/entry/2014/08/22/010933