Mac OS 9 Lives
Mac OS 9 Discussion => Mac OS 9, Hacks & Upgrades => Topic started by: Zaspath on December 08, 2025, 09:16:53 AM
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System: G4 MDD (2003 1.25Ghz FW400)
Firstly, I'll cover my mad-cap plan... I wanted to have both a PCI and AGP graphics card inserted so that I could get full acceleration in both 10.4 and 9.2.2 just by switching VGA cables between the two cards (probably with a VGA switch, yet to test that part).
The x800 Pro AGP (converted Fire GL3, reduced 64kb rom) giving acceleration in 10.4 and a converted 9250 PCI (128kb TOME rom, hacked drivers) giving acceleration in 9.2.2, I'd heard of a few people doing this so thought it would be worth a go.
This is kind of working, BUT in 9.2.2, it still detects the AGP card as a basic adaptor, meaning I end up with 3 monitors being found, the third being the PCI card (I guess AGP has priority with 2 DVI ports, not sure). OS X seems to behave a lot better well with it, not making everything active.
Within 9.2.2, this causes problems in various games, some have acceleration some won't even start. Is there a way to disable multi-monitor support in 9.2.2 or disable the AGP card in 9.2.2? Could this be connected with still having a reduced 64KB rom on the X800?
I hope this makes sense!