Well, I never got around to trying the updated code. Other projects (non-software) got in the way. I'm working on recording a song I wrote about a year ago. I'm basically done recording at this point except for patching a few places here and there, but I'm still heavily editing. That's occupying every evening until I finish it. Once that's done, I'll get back to the Nubus driver.
I recently encountered a handful of old patches for the MkLinux kernel that I don't think I have seen before, though a couple of them looked very familiar. We're due for a new kernel release and a new Linux server release ASAP, in part because of a nasty bug in the 2.0.xx kernel when dealing with OpenSSH's privilege separation.
I'm hoping I can get the Nubus framework in place and working before the next release, even if I don't have time to actually bring up any drivers in it. Of course, the drivers are the easy part. It only takes about an hour to port PCI ethernet drivers from NetBSD. I'd expect the Nubus drivers to be even easier. We'll see. :-)