UNIX for PDP 11/23

[cbsoth at brl.mil]

   I have a friend with a DEC PDP 11/23+ who would like to run UNIX on
it. Is Berkeley available for free? What commercial versions of Sys V
and Berkeley are available?



      Thanks in advance,


Clifton B. Sothoron Jr.
Ballistic Research Laboratory
Aberdeen Proving Grounds, Md.
cbsoth at brl