very interesiting: how to convert AY sound?
IstvanV created AY emulation code, simply replace the AY writes to call the emulation routines which convert AY wrtes to Dave writes. I also used this code in PT3 player.
The problems: AY have a 3 channel, and all also can play noise. Dave have 3 sound channel and one noise channel. If the AY code use lot of noise then need to play, which noise are emulated and which not. But if you are the creator of the AY music then possible to recompose to more Dave friendly
Another problem the Dave not have envelopes. Possible to use envelope simulation in the AY emulation code, using high frequency irqs, and the emulation code edit the sound parameters in the dave, try to simulate the AY envelopes. It is need more CPU time.