Snow Leopard on Unsupported PowerPC Macs

[ChrisCharman]

Hi Chris,

I was able to track down an old version of the source code for ATY_init, from https://www.insanelymac.com/forum/t...amebuffer-xcode-project-to-start-from/page/3/

Build fails on 10A190 ppc but compiles file and kextload fines under 10.5.8 ppc but I guess the plist needs to be changed (doesn't recognise my PC Radeon HD cards under 10.5.8 - of note I can get them recognised but not working using https://forums.macrumors.com/thread...6-driver-radeonhd-framebuffer-driver.2344940/).

I also found the source code for ATY_HD (related), build also fails under 10A190 but compiles fine under 10.5.8; however it complains about IOACPIFamily when kextloading. Found it in the same thread.

https://www.insanelymac.com/forum/topic/156279-new-ati-framebuffer-xcode-project-to-start-from/

Cheers,

This is a very interesting find indeed, thanks @pc297!

It may be worth trying against 10.6.8 and reporting on the development thread. If it’s found to work on 10A190 down the line can be written up here.

 

[pc297]

This is a very interesting find indeed, thanks @pc297!

It may be worth trying against 10.6.8 and reporting on the development thread. If it’s found to work on 10A190 down the line can be written up here.

I'll give the compiled 10.5.8 kexts a try under 10A190 and 10.6.8, however re ATY_HD my guess is that it needs older rather than newer frameworks, the error message under 10.5.8 was "22IOACPIFamily is not compatible with its superclass. 16IOACPIFamily superclass changed?"; so possibly frameworks/kexts from an earlier Leopard version - which could match that of 10A190, which is older than 10.5.8.

There are also these versions of Natit that were compiled for ppc if anyone wants to try them, and the old source code from 2006 (found at https://www.insanelymac.com/forum/topic/32004-natitkext-titan-imitation-with-source/ and on the above-mentioned thread)

Will write further here or on the 10.6.8 thread if I can get ATY_Init or Natit to work with either, with or without rom injection in their plists (the very last version has a few roms in there already)

Cheers,

 

[joevt]

ACPI is for Intel Macs only.

 

[SnakeCoils]

Just a quick question about using the nVidia 7800GS with SnowLeo PPC: I have one sitting in a box and in the past I have flashed it succesfully either with the "Tiger" firmware (temperature sensor OK with 10.4) or the "Leopard" firmware from MacElite site (temperature sensor probing removed). In the end I reflashed it with PC bios and abandoned in favor of a flashed FireGL X3-256 that at least under OS9 it support the screen resolutions chooser (but not, of course, 2D or 3D acceleration)
Now that I am having fun with SnowLeo PPC I would give to the nVidia card a second chance (from what I have read it seems to have a better support on 10.6 PPC than ATIs). My question is: if I flash the 7800GS with the standard firmware (temperature sensor functional) it will control the GPU fan nicely like in Tiger or it will full blast like in Leopard?
The PowerMac I am using is a FW800 dual 1.42 MHz