Disable lowpass again, remembered the filter is explicit for spdif output (where it matters). Make spdif component explicitly have a port for left/right. Get all versions building again (some needed old dac for space reasons). Change default volume for adc and sio mixing for v4.5 (SHOULD not need the filtering there, testing now).
Added two new components: sync reset and 2nd order dither.
Break out audio detector to own module and improve. Now with zero crossing support.
Increase ADC volume. Try to decrease ADC noise by digital methods: FIR filter of problematic frequencies, silence ADC when nothing playing. Disable ADC for models that do not fit these features (M02/M08 with sample memory)
Correct audio outputs, I got them back to front on the board design
Fix IO standard for the ADC
First cut of pokeymaxv4 core, untested as yet and probably some mistakes. Might also have broken v2/v3, need to test they still build/work