Zac67 wrote:
Does anyone know, how much OS4 for classic and OS4 for A1 actually differ?
Personally, I have no idea, but I doubt they differ very much.
My bet is that the HAL and the bootloader is different, and that the rest is handled by drivers. After all, that's the reason for having HAL and drivers in the first place, and I doubt that Hyperion had resources for a complete rewrite anyway.
As for the piracy bit: If someone manages to get an implementation of OS4 Classic running on a PPC Mac, then i _will_ buy a copy of it. Period.
That is not piracy, no matter how you put it, and it will support the platform.