On Sun, Nov 14, 2021 at 02:17:23PM +0100, BALATON Zoltan wrote:
In my opinion a more perfect solution would be to use real OpenFirmware instead that would really fix all compatibilty problems. If anything I would be willing to put effort in that otherwise it's just wasted time for me. Why reimplement OpenFirmware now that it's available open source? We would only need to write the drivers for the mac hardware for it some of which may be available in the Sun version which is also open source (like escc and sungem)
Fwiw, this will not be compatible to Apple OF at all. There are very many things, small and large and huge, where Apple OF deviates from the 1275 standard. Also all OSes that run on Macs have their own special little (or huge) requirements as well.
Note that the Apple 8530 and GEM are incompatible to the original as well, in some crucial ways. Nothing that cannot be overcome, but don't be surprised if things do not work out of the box.
Good luck and have fun,