You cannot boot in OpenFirmware from a slave device with this 
machine at any ROM revision so far as we know. Classic MacOS *will* boot 
from a slave device if you have a rev B or later ROM IIRC. But if you want 
to boot from OpenFirmware (NetBSD, Linux, MacOS X, etc.) it has to be the 
master on whatever channel.

http://www.netbsd.org/Ports/macppc/models.html#g3v1

-- 
I'm trying to port NetBSD to my cup of tea, but it keeps kernel panicking 
on refill. This is odd, because I ported it to my toaster and my bookcase 
easily enough and it survives bread- and book-replacement fine.

Any hints?

Jared Earle - http://mail-index.netbsd.org/tech-ports/2002/07/04/0000.html