> > Star Rider has no PSG. The sound board has a 6809 driving two DACs via 32*8 FIFOs. > > The playback rate is controlled by a PTM. > > Does it use one of the standard Midway sound boards? (sounds like a Turbo Chip Squeak > -- see audio/midway.c)
No, it's not that. It's closer to a Williams pinball sound board. The board can support three FIFOs/DACs plus a TMS5220, but one FIFO/DAC and the TMS5220 are unpopulated. The software can also control the mix level for the first two DACs.