There seems to be some bug in Mami's support for the combination of OPL2+OPLL (SPFM).
Today I tested the SPFM-OPL2, completely normal sound, also tested the OPLL alone and had no problems.
When I use OPL2 and OPLL at the same time, the sound of OPLL is messed up no matter which card slot is inserted.
When Slot1 uses OPL2 and Slot4 uses OPLL, OPL2 is normal and OPLL timbre is wrong.
When Slot1 uses OPLL and Slot4 uses OPL2, OPLL has no sound and OPL2 has the wrong timbre.
There seems to be some bug in Mami's support for the combination of OPL2+OPLL (SPFM). Today I tested the SPFM-OPL2, completely normal sound, also tested the OPLL alone and had no problems. When I use OPL2 and OPLL at the same time, the sound of OPLL is messed up no matter which card slot is inserted. When Slot1 uses OPL2 and Slot4 uses OPLL, OPL2 is normal and OPLL timbre is wrong. When Slot1 uses OPLL and Slot4 uses OPL2, OPLL has no sound and OPL2 has the wrong timbre.