Getting System 7.5 natively booting on a G4 Mac is impressive enough…

...but what truly blows my mind is that on the same hardware, the author managed to get System 6.0.8 as far as a Happy Mac, and Systems 7.0/7.1 to a "not supported on this computer" dialog.

The fact that the ROM manages to get that far at all, instead of a black screen or sad mac is bonkers, considering that the processor architecture (and the rest of the hardware) is completely different from anything that would be understood by that era of OS. It's relying on the 68k emulator built-in to the ROM.

Driver support notwithstanding, I wonder how low could you go if you took the resources from the CHRP system enabler and brought them over into the System file directly? Since 6.x and early 7.x didn't support enablers.

#RetroComputing #VintageMac #68K #PowerPC #Apple #Mac #MacOS #ClassicMac https://mstdn.social/@osnews/115637701377779352

OSNews (@osnews@mstdn.social)

System 7 natively boots on the Mac Mini G4 Only a few weeks ago, the CHRP variants of Mac OS 7.6 and 8 were discovered and uploaded to the internet for posterity, but we're already seeing the positive results of this event unfold: Mac OS 7.x can now run on the Mac Mini G4 - natively. The very short of it is as follows. First, the CHRP release of Mac OS 8 contains a ROM file that allows Mac O https://www.osnews.com/story/143926/system-7-natively-boots-on-the-mac-mini-g4/ #macOS

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@smallsco this also significantly expands the list of systems that qemu-system-ppc can run. I’ve just booted Mac OS 7.6 for CHRP with Mac OS ROM 10.2.1! What an exciting moment for the retro Mac community!