I've just splurged and bought myself a second hand Duo 250. Does anyone have
any hints on getting NetBSD running on this machine? Has anyone else attempted
(maybe even succeeded at doing) this?

Are Takashi Hamada's patches for the PB 500 series in -current sources now?

I can get internal video with Michael Zucca's latest internal video kernel, but
it hangs very early in kernel bootstrapping (getting MMU mapping).

I've already got desktop machines running NetBSD, but a portable *nix system
looks pretty attractive to me right now.

Bernard.