I'm not sure if this is common knowledge, but while (unsuccessfully) hunting for Leopard Core Library documentation I found a tome of Apple's "Legacy" developer documentation (packaged in 2011) which contains articles and source code dating back to about 1990 covering many dev topics. One interesting tidbit that might be useful is the source code for a Carbon PowerPC PCI 'ndrv' driver loading/unloading application for testing / debugging drivers without needing to reboot.
The "Legacy" download is a .docset package in .xar format (use "xar -xf filename.xar" terminal command to unarchive). This can be loaded into Xcode on a more recent Mac (Leopard or above) or you can view the doc index in a web browser by navigating through to Contents/Resources/Documents/index.html
Point your download manager to:
http://devimages.apple.com/docsets/20110309/com.apple.adc.documentation.AppleLegacy.CoreReference.xar(937.8MB expands to 2.06GB)
I have no experience with classic Mac OS driver programming, but in the right hands, these docs may help someone?
Keep up the great work!
-AphoticD
P.S. None of my PPC macs are yet to be supported by your unsupported release efforts. If I can be of any assistance please don't hesitate to let me know.
My PowerPC machines are:
> PowerBook G4: 6,8 (12inch 1.5Ghz) 5,6 (15inch 1.5Ghz) and 5,7 (17inch 1.67Ghz)
> Mac mini G4: 10,1 (1.42Ghz)
> Power Mac G5: 7,2 (2x1.8Ghz, 2x2.0Ghz) and 11,2 (2x 2.3Ghz)