NetBSD/Amiga image for real Amigas and FS-UAE

[kolla]

Yes, NetBSD requires an MMU, which is why NetBSD under FS-UAE, even on a 4 GHz Core i7, is not yet as fast as a real m68060.

Which is why you should use Aranym for such tasks, as emulating the atari and dropping all the Amiga chipset emulation, makes a big difference.

[kolla]

what support for window manager / GUI is there? Can it run KDE or anything?

Is it utterly worthless and pointless for you if it cannot run Plasma Desktop? I used to run KDE2 on Linux/m68k.
The biggest task is actually not running it on m68k, but building C++ code for m68k, very few m68k systems have enough RAM.