[lkesteloot]

In 1992 a friend and I ported BSD/Net2 to the Mac II, and found (weeks into the project!) that kernel functions like fork() and exec() and all of TTY were missing. We thought we were screwed, but found 386BSD and grabbed its versions. I don't know if other BSD ports (like NetBSD) did the same or wrote theirs from scratch. We were certainly indebted to Bill Jolitz for saving our project!

[rjsw]

The NetBSD and FreeBSD projects grew out of the collection of patches that people wrote for 386BSD, they didn't start from Net2.

[yuhong]

As a side note, I wrote https://en.wikipedia.org/wiki/Macintosh_II#Memory_limit after I realized how misleading the Apple documentation about this was, causing much confusion.