NetBSD 8.0 hang on RS/6000 43p-150 (7043-150)

I realize (now=E2=80=A6) that the 7043-150 isn=E2=80=99t in the =
supported systems list but I figured I=E2=80=99d give it a try. With an =
8.0 release CD, the kernel starts but hangs in OpenPIC (transcribed, =
please forgive any errors):

	OpenPIC Version 1.1: Supports 4 CPUs and 16 interrupt sources.

Here=E2=80=99s a link to a screen shot:

	https://i.imgur.com/VpDMDQd.jpg

The very latest ofppc daily ISO gives a similar result, with some stuff =
about preferring USB first. (This system doesn=E2=80=99t have USB, I can =
provide a complete inventory upon request, but other than having a 18GB =
couple drives, 512MB RAM, and a 4-port NIC, it=E2=80=99s a fairly stock =
43p-150.)

I can put images on floppy and attempt to boot them if anyone wants to =
poke at it. I could also set up a system for building ofppc if people =
just want to propose tweaks for me to try either atop the netbsd-8 =
branch or current.

  =E2=80=94 Chris

PS - Apologies if this shows up twice, it didn=E2=80=99t show up for me =
for a couple hours but other port-ofppc traffic has, so I=E2=80=99m =
resending.