In addition to my curiosity about possibly modding the JAG for S/PDIF I'm now researching to mod my Genny for Digital audio as well as the Jaguar.
Our very own Brendan Raymond has created what is (to my knowledge) the first digital audio mod for the Genesis. But from what I've read about the mod since is that because the YM2612 inside the Genny contains an internal DAC the sound is taken directly from the chip's analog output circuit and converted to digital on the spot by an ADC.
So, I'm thinking of possibly replacing the internal YM2612 with it's Non-Internal-DAC equivalent, the YM2608; then take the sound off of it from there and wire it straight to a coax/optical jack with a lot less hassle. Basically I'm looking to get a 100% digital transfer and avoid having to take and convert any of the Genny's YM2612 Analog circuitry if possible.
Is there any way this would be possible? From what I know the YM2612 in the Genny and YM2608 itself use an identical instruction set so that would make the transition easy once I trace the circuit and wire it correctly. Of course that would mean loosing all analog audio from the Genny unless I used some form of DAC but I doubt I'd miss it. Though I probably would put in some form of DAC just for BC with non-digital stereo systems.
Wiki's on the corresponding chips:http://en.wikipedia.org/wiki/Yamaha_YM2608http://en.wikipedia.org/wiki/Yamaha_YM2612
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