Basically, since DOSBOX emulates the SB16 and the drivers happen to be compatible, it was a matter of getting it to log the OPL playback output, then a process of retrieving the register writes (I work with the VGM format since there are utilities for that; there's a DRO2VGM converter which allows …

Progress update on SAPI! patch retrieval, here's a rundown (using SAPI.COM): - need to work out correspondence of C0, E0 and maybe BD registers - melodic patches begin at 0x0A - All patches are 2x2op (no modulation between channel pairs, only additive) - Instrument register bye order: 20, 40, 60, …