[TUHS] Did System V Really Prevent 5BSD?

[Al Kossow via TUHS]

On 12/29/25 8:27 AM, Paul Winalski via TUHS wrote:
> On Sun, Dec 28, 2025 at 9:53 PM Jon Forrest via TUHS <tuhs at tuhs.org> wrote:
> 
>> In the early 1980s David Kashtan at SRI wrote Eunics, which was a way to
>> run Unix (I don't recall which version) on top of VMS.
from someone who knows the history not on TUHS

"the reason for Eunice’s existence was that Kashtan (then at SRI) wanted to run Franz Lisp but had a VMS VAX, not a BSD Unix VAX.  So he 
wrote a 4BSD system call emulator for VMS so it could run 4BSD user programs.  Eventually he was able to run Franz Lisp.  I’m not sure how 
much else of the 4BSD userland he had to bring over to get that to happen.  "