Model: Quadra 900

IOP ADB: OK (tested on Q950).

NCR53c9x SCSI: OK. Occasional probe trouble on some models (?). Complains at poweroff. The external SCSI bus doesn't work on the Q950. Workaround: disable it by setting mac53c9x=1 as a kernel argument.

Serial: Broken. Cannot be used from userspace, but can be used for kernel debugging (note this requires that MacOS first place the serial ports into compatible mode.)

SONIC ethernet: OK.

NuBus: If initialized by MacOS, some cards can cause an early kernel panic on some models. Workaround: boot MacOS with extensions off, or use Emile instead of Penguin.

Miscellaneous issues:

The real time clock is broken. Workaround: use NTP to set the time at boot, and disable filesystems' time-stamp-triggered fsck with tune2fs -i 0 /dev/whatever.

Please send corrections and new results to the linux-m68k or debian-68k mailing list.