M-Audio Audiophile USB | reverse engineering | drivers OS X

[frozenfrogz]

Dear forum,

lately I wanted to reactivate my trusty old M-Audio Audiophile USB interface. However, driver support was dropped back in the day with OS X 10.7. I am wondering, if there might be options to get the device back in business.

ICs as identified (red boxes top to bottom)

Cirrus Logic CS8427-CSZ	96kHz transceiver
Texas Instruments TUSB3200C	USB streaming controller
AKM AK4528VF	24bit 96kHz audio codec
Microchip 24LC64	64K I2C Serial EEPROM
Philips 74HCT00D	Quad 2-input NAND gate

Does anyone of you know of an all-purpose driver that might work for OS X 10.11 or can give me some pointers to what I would have to go through to write my own driver package?

Thanks and best regards,
Frederik

[Fungus]

What do you intend to use it for? If it's just for listening then you can get something new for $12.

[Cervisia]

The Linux driver should have all the workarounds needed. Does it work there?

[frozenfrogz]

I had it working on a Linux machine some years back, but I don’t see that there are options to cross-compile ALSA on OS X.

Intended use is Audio input and Midi In/Out.

[Cervisia]

I was implying that you could start with a standard-compliant USB audio driver, and copy the workarounds from the Linux driver.

This assumes that you do have experience writing OS X drivers, so it's probably not helpful.
But I don't see any other alternative.

[frozenfrogz]

OK, now I get it. Don’t think I am going that deep into the rabbit hole

After some fiddling with the old 10.7 drivers and "manual wiring" I got some basic output working, but there are a compression artefacts / aliasing / sample rate mismatch / ?. That is at least a step forwards xD.
Maybe I can figure out the rest