> > I mentioned this to indicate that OPL2 is not a full superset of OPL1.
By
> > the way, I think it wouldn't be too hard to emulate ADPCM using PCM,
> > especially since Alex Wulms published conversion routines. I know Yobi
> > succesfully used those to play MWK files on the MoonSound.
>
> The MSX-Audio chip is NOT OPL1!!!
>
> The Y-8950 is an MSX LSI, just like the V-9938 and the MSX-Engines.
> It's copyrighted by ASCII, Microsoft and Yamaha. The MSX-Audio
> contains not only an OPL! but also A/D converter, memory logic, ADPCM
> parts. There is an external D/A converter (Y-3014) for the chip's
> combined 12 bit or so output, like the OPL3 has. The Music Module has
> another D/A converter (which has nothing to do with MSX-Audio).
Anyways it is fully OPL1 compatible, with an additional ADPCM-decoder.
By the way, the Toshiba MusicModule contains the same chip, however without
SampleRAM (??? for god's sake, why???), and the Yamaha MusicModule contains
an OPL1 (it even hasn't got a sample-unit).
> p.s. why are we talking about OPLx in every thread now?
??? dunno...
~Grauw
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