> > I rather suspect that one of the Super Nova system's custom-named ICs is some sort > of > > MCU that channels the board I/O through shared RAM rather than the direct mapping > the > > driver currently provides. > > 400000-40000f looks like a somewhat usual in/ou mux to me, what makes you think that? > > OG.
It's the analog "paddle" stuff, which is mapped to some oddly nonconsecutive bytes. What's even more odd about that is that the ADC on the board is a MSM6253, which has a microprocessor bus-compatible serial readout.
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