I am NOT the author of this but ... there is a very good start of answer here:

https://macintoshgarden.org/apps/macmini-audio-fix

Maybe it should be added to a v9.1 iso ?

(confirmed working on my 1.5GHz)

You can create a disk image for the floppy disk and load it into basilisk ii.

Now I have Basilisk II running on my iMac with MacOS 7.6.1 . The vintage music software launch, but ask for the original master disk (which I have) at startup. How can I simulate the insertion of a floppy disk ?

Great site here, such a good resource it has made setting up a mac brain for my samplers very easy.
cheers

I'm experiencing some issues as well after moving from the CloudFlare proxy. I'll investigate the upcoming days.

When I post now I get redirected to a blank page. I'm on the latest Safari for macOS.

Yes, Mac OS 9 can still run 68K software, but if the software depends on quirks/earlier APIs in the Classic Mac system software or particular hardware from the early 90s it may still not be Mac OS 9 compatible. My advice to you is to try it on a system running System 7. You may also try on an emulator like Basilisk II that approximates and early 90s machine.

Hello there,
I have several floppy disks with music software developped at IRCAM in the early 90s, all of them for 68k Mac.
AFAIR, MacOS 9 was able to run software for Mac 68k, but when I try to launch any of them, I get a big system crash on my PowerMac G3...
Any advice ?
Thank you in advance.

need this specific card for my G3 450 B+W
the newer ones i have dont want to play nice with my board for wahtever reason and i neeed to be able to dual boot between x + 9  on this machine thats the whole point of a G3/G4 imho

i have a 9200 pci but it seems to be too much for this machine i get problems booting up maybe because its not the full mac rom in the cards that i have. probably.

anyway its also known as a XVR-100 used for graphics on sun microsystems servers back in the day if anyone has one on the cheap for me please hook me up!!!

i alreayd tried a radeon 7000 by sapphire with 64MB ram and it didnt work with the proper rom either i dont think (prob 64kb eeprom) need the full rom (128kb) for this machine to properly support both 9 + x.

Hey all! I am from Montevideo, I've recently acquired an iBook G4 which I'm very interested in trying out the unsupported G4 ISOs for. I did not get to live the tail end of Mac OS 9 as a younger person, but always admired OS X, 9, and most Apple products of that era.