I think it's a great idea. In fact I think I mentioned it when MiniMig was first announced.
Basically, I would like to see MiniMig on a PCI card. You then run an app inside your main OS which is similar to UAE, but instead of emulating the 68k CPU and custom chips it uses the real ones on the MiniMig card.
If the card were supported by AROS, MOS or OS4 it would provide great legacy support in a modern, AmigaOS-like environment.
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moto