On Tue, Jan 2, 2024 at 2:31 PM Chet Ramey <chet.ramey@case.edu> wrote:
On 1/2/24 1:49 PM, Warner Losh wrote:

>     Right, this is all of the MK0, CSRG, and Sun connection via Fred, Bill,
>     and Sam.  At a minimum, they knew what the other was doing/had done,
>     and some of it definitely migrated.
>
>
> What's MK0? Is that the group at DEC that did Unix?
DEC Merrimack NH Site - where Telephone Industries Group (TIG) and Custom Special Systems (CSS) were located. It was originally the site dedicated to supporting DEC's largest customer - AT & T.  Bill Munson originally ran TIG.  Armando, Jean, Shannon, Cantor, et al. worked in TIG.  Those folks eventually moved to ZK03 - Spit Brook Road, in Nashua, with the other OS teams when Ultrix was created.

Sorry, old habits are hard to change.  Except for the Mill itself, many, if not most, of us from the old days still refer to the different DEC sites (particularly the original New Englands) by their site code.  For instance, my old offices were in MR02 (Marlboro, MA) and ZK03.

Years later, the compiler team (in ZK02) was sold twice, and they never moved their desk. Hence, when I later joined Intel, my desk was placed in ZK02 with the compiler folks like Paul W. In fact, when Intel finally moved us out, we realized that folks like Steve Hobbs had not moved his desk in 30 years.

I don't know what MK0 is either, but Bill Shannon and Sam Leffler had been
friends since they were both grad students here at CWRU, so I would assume
they kept in touch about what they were doing.
Indeed, and having been friends with them both, I can verify that they did.