It turns out that there are `free' drivers for the AWACS and MESH.
The code needs to be rewritten for NetBSD anyway, but at least I can
tell you where to find it...

First, you want:

ftp://ftp.mklinux.apple.com/pub/Updates/DR2.1update6/DR2.1update6.osfmk.src.tgz

There is a directory in the tar file called
DR2.1update6/osfmk/src/mach_kernel/ppc/POWERMAC, which contains all
the drivers for MkLinux, including some NuBus stuff.

I don't see any floppy support, but everything else seems to be there
-- ADB, IDE, AWACS, Cuda, MACE, MESH, SCC, 53c94, etc.

Shar and enjoy.