> macvid0: unknown video card at ID 0x2cb - not installing interrupt routine
> macvid0 at nubus0: SuperMac Thunder/24 v1.16
> macvid0: 1024 x 768, monochrome

Cool!  I'm guessing that you aren't trying to use ethernet.  If you
were, it probably wouldn't work because the SuperMac is probably
generating interrupts that aren't being handled.  If you'd like to
make sure that interrupts get handled properly, see the info at

	http://www.macbsd.com/macbsd/howto/video.html

If we get the magic incantation to clear interrupts, we can handle
them in the kernel and get rid of that message for you.

Thanks!
-allen

-- 
              Allen Briggs - end killing - briggs@macbsd.com