Basilisk II doesn't emulate an 68k MMU, so it cannot run NetBSD.
Here's an excerpt from the output of BasiliskII --help:
--cpu NUMBER
CPU type (0 = 68000, 1 = 68010 etc.) [default=0]
Isn't that the 68k MMU?Also, you can see the specs for Mac II si right here:
It has the 68030 processor.
Thanking you,
Utkarsh Anand