Mac Mini G4 Overclock just because its fun.

[joevt]

You can get the Mac mini boot rom using https://forums.macrumors.com/threads/question-how-powerful-of-a-graphics-card-will-work-in-a-beige-power-macintosh-g3.2303689/post-32937887
If you post it here, then I can see if there's fcode for R9200 in there.

[ssp3]

You can get the Mac mini boot rom using https://forums.macrumors.com/threads/question-how-powerful-of-a-graphics-card-will-work-in-a-beige-power-macintosh-g3.2303689/post-32937887
If you post it here, then I can see if there's fcode for R9200 in there.

Hang on.. is that a 'flashrom' build for Mac? Can it be used to dump Mac Mini onboard ROMs? If so, it could be very useful to compare "original" and "silent upgrade" ROMs to figure out what they've screwed improved in graphics department with later one.

[joevt]

Hang on.. is that a 'flashrom' build for Mac? Can it be used to dump Mac Mini onboard ROMs? If so, it could be very useful to compare "original" and "silent upgrade" ROMs to figure out what they've screwed improved in graphics department with later one.

Yes and Yes.

https://github.com/joevt/flashrom/blob/bb1afb074b2dc64aeb3bf5667ab05e731db4aaf1/doc/classic_cli_manpage.rst#L309

Try the anymem programmer first. One of the scripts in the zip file uses that method to get the Mac rom.

There's an internal programmer but it hangs my B&W G3 - it might work on later Macs but I haven't tried it. If it works without crashing then compare the result with the anymem result. You probably need to hold the power button at boot until you hear a chime to get into programmer mode.

The anypci programmer can get the option rom from any PCI card that has an option rom. Some PCI cards hide their option rom after boot (may return bad data). If it has an Open Firmware option ROM image, then DumpPCIRom.sh will convert it to Forth and verify the checksum.

[ssp3]

A bit more detailed instructions would be helpful. All I can see at the moment is a ton of .c files. Do I have to compile them first? And where/which is the script you're talking about?

[joevt]

A bit more detailed instructions would be helpful. All I can see at the moment is a ton of .c files. Do I have to compile them first? And where/which is the script you're talking about?

In the macrumors post that I linked in a previous reply (top of this page) is an attachment.

Try the get-new-world-rom.command script first.

The read-rom-internal.command might work but it might cause a hang. It would be interesting to know if there's a Mac that this method works with. @dosdude1 has a linux version of flashrom that uses this method which works for some Macs.