Originally Posted by Zetr0
... in a couple of words.....
custom chips.... custom roms and more custom chips...
OS breaks all the dependency on the Custom chips, OS4 could run on Mac PPC hardware, with only drivers required for the sound/Graphics, which for the resonably standard PPC Macs would, I suspect, be less work than converting it to Amiga+Blizzard and assorted PCI/graphics gubbins.
But they don't have rights to release it for them, darn you Amiga Inc. Darn you to hell!