> > So is the report about the "hard to emulate" tone generator still accurate? > > And what Yamaha chip is it anyway? > > IIRC all the roms are surface-mounted and there's some H8-series MCU with possible > internal program. The sound chip is some Yamaha custom.
Guru just dumped me the H8 program ROM from the thing and it appears to be complete
(ETA: Even has what looks like all the strings for the menu system on the LCD, so this could be a two-for ;-)