I did some testing on the image sets using simh.
 I had to prepare the images first using lbn2rx50
 <http://www.chdickman.com/pdp11/>, because simh expects them to be in
 logical order.
 Results:
 ULTRIX-11 V3.0: All images good
 MicroRSTS V2.1: The third image throws an error:
 *sim> ATT RQ2 RSTS21-3.RX5%SIM-INFO: RQ2: 'RSTS21-3.RX5' Contains a RSTS
 File system%SIM-INFO: RQ2: Pack ID: MICR3  Revision Level: 1.2 Pack
 Clustersize: 1%SIM-INFO: RQ2: Last Unallocated Sector In File System:
 799sim> c?Error opening Backup set?Device hung or write lockedMount volume
 3 on device _DU2:Press RETURN when ready:*
 MicroRSX V2.1: Have not found out yet which one of the images is the one
 to start with. Is the image set complete?
 I thought that RSX4-I.IMG <https://www.crystel.com/pdp/os/RSX4-I.IMG> was
 the one (with an I instead of a 1), but all I got was:
 *Trap stack push abort, PC: 000014 (000040)*
 Maybe that image is bad, too ...
 Ulli
 Am Do., 27. Juli 2023 um 00:55 Uhr schrieb Chris Zach via cctalk <
 cctalk(a)classiccmp.org>gt;:
  Ok, files are up on
https://www.crystel.com/pdp/os and
 
https://www.crystel.com/pro350
 MicroRSX, Ultrix11, MicroRSTS/E, and um spss
 On 7/26/2023 1:51 PM, Mark Matlock via cctalk wrote:
  Chris,
     I would be interested in getting a copy of the SSPS/X software for
 
 POS. I have a manual for SPSS/11 and would love to  try to get the software
 running under RSX11M+ if possible.
 Thanks,
 Mark
> On Jul 26, 2023, at 12:00 PM, cctalk-request(a)classiccmp.org wrote:
>
> From: Chris Zach <cz(a)alembic.crystel.com <mailto:
 
 cz(a)alembic.crystel.com>>
 > Subject: [cctalk] Old Professional/350
software, any of this out there
> Date: July 26, 2023 at 9:30:10 AM CDT
> To: CCTalk mailing list <cctalk(a)classiccmp.org <mailto:
 
 cctalk(a)classiccmp.org>>
 > Reply-To: "General Discussion: On-Topic
and Off-Topic Posts" <
 
 cctalk(a)classiccmp.org <mailto:cctalk@classiccmp.org>>
 >
>
> Starting to go through my boxes of POS stuff. I know of course that
 
 3.2 is out there (minus the Pro/Communications option which has a bad disk
 in the distro) however are these disks out there now?
 >
> Pro/Venix 1.0 on floppies
> POS V2.0a on floppies
>
> POS version 1.5 (with test diskette, maintenance application, a thing
 
 called Pro/Pre labelled "Diskette system", system overview and
instruction
 disks)
 >
> POS V1.7 (I have that here somewhere)
>
> Pro/Basic Version 1.0 and 1.2
>
> SPSS/X For Professional (this is a really interesting one, anyone
 
 heard of this?)
 >
> If so let me know and I won't copy them. If not I'll go over to the
 
 mighty Deskpro/XE and start sucking the data off for archives....
 >
> Thanks!
> Chris
> (Hoping to find old drivers or scaffolding or something that will give
 
 me a hint into how DEC ported POS)