Yeah... Emulating the PowerPC isn't too difficult. (Heck, if all you want is a PPC emulation, PearPC is out there....)
Emulating a Cyberstorm PPC or Blizzard PPC equipped Amiga. Apparently VERY difficult. I've never owned one of the cards, myself, so I can't quite speak to how they work... But from what I gather, they're quite a complex hack. A LOT of timing and synchronization issues to consider in emulation.
I almost wonder if it wouldn't be possible to consider the 680x0/PPC combination card as a single core. Then you'd be free to write an emulation of that imaginary single core. Might be easier than trying to deal with the nightmare of emulating two separate processor architecture routines connected to a single emulated bus.
Of course, I also wonder if it wouldn't be possible for a genie to magically appear and grant me 3 wishes....
