On 8/21/2021 10:50 PM, Jay Jaeger via cctalk wrote:
  On 8/17/2021 1:39 PM, Paul Koning via cctalk wrote:
  I thought V7M and Ultrix were entirely diferent
and unrelated things.
 At least on the Pro, DEC released a betal version of the one (which I
 tried when it came out) and then canceled it and replaced it by a
 release of the other.? I forgot which came first, other than that the
 beta was really clunky.? As in, a "vi" that didn't do real screen
 updates...
 ????paul
  On Aug 17, 2021, at 2:16 PM, Al Kossow via cctech
 <cctech at classiccmp.org> wrote:
 images up under
 
http://bitsavers.org/bits/DEC/pdp11/floppyimages/rx50/V7M-11-V1.0_6_USR_RX5…
 
 They are indeed different.? V7m is based on 7th edition A&T UNIX,
 whereas Ultrix was based in BSD.
 JRJ 
OOOPS.  Belay that.  Further reading of the SPD seems to imply that
Ultrix-11 was simply an evolutionary step from V7m to support more
hardware - notably the 11.73.
JRJ