> I've heard rumors that a NetBSD port for the MIPS magnum machines exists
> somewhere, or that at various times various people have expressed
> interest in completing the port.

If the magnum means R4400 magnum, then, yes, the work is in progress.

> I have a chance to get a CDC 4320, which I hear is a rebadged Magnum
> 3230, and I'm wondering if I should bother getting ahold of it.

Mmm, Magnum 3230... Isn't it R3000 based system?
If so, I don't know about NetBSD port.

I seem to recall that Nishimura-san was trying to the port few years
ago. But I believe he doesn't have a access to the machine, now.
--
soda