I'm trying to boot NetBSD/Mac68K 1.3.2 on my Powerbook 520c.  I know
that the FP emulation is broken, and in fact I'd like to take a stab
at figuring out how to fix it.  My problem occurs much earlier.

My hardware is

	Powerbook 520c (25MHz 68LC040)
	20MB RAM
	Global Village Powerport internal modem
	Apple 160MB internal SCSI disk
	Zip Plus (external) drive

Software is

	NetBSD/Mac68K 1.3.2
	Booter 1.11.2 running under System 8.1

Temporarily, I am using the Zip disk as my root+usr (no swap).
(If/when things go well I will repartition a hard drive to create a
more permanent home.)  I can boot this Zip disk on my other machine, a
Mac IIsi.

On the PB 520c, the kernel hangs just shortly after starting up.  With
debugging turned off, it typically prints part of the copyright
message and then freezes.  With debugging turned on, it prints all of
the pmap_boot messages and then freezes.

My suspicion is that something is generating an interrupt that the
kernel isn't yet prepared to handle.  I've tried various combinations
of options to the booter, but nothing seems to help.  The Unix kernel
and I are old friends (going back to V6, 23 years now), so I'll figure
this out eventually, but if it sounds familiar to you I'd certainly
appreciate a hint.

--John Bruner