This is the directory for DEC Professional 325/350/380 stuff.
Most of it is for P/OS 2.0A - 3.2 from DECUS archives.

Files are compressed with LHA and are floppy images made by Teledisk.
Teledisk and LHA can be found on /pub/ibmpc/util. To make RX50 floppies
for the DEC Professional, you have to run 'LHA X filename.lzh' to
extract the file(s) and then use the Teledisk program on an IBM PC
(or clone) with a 1.2Mb DSHD drive (running MS-DOS).
Start Teledisk, select the 'file to disk' option, insert a DSDD 96tpi
5.25" floppy and start the file copying. Teledisk will now make a
complete copy of the original RX50 floppy. For further information,
please read the Teledisk manual.

Some of these programs can be used under RSX-11 on PDP-11s.

Questions, comments and so on, to 'tomk@update.uu.se'.