I was recently
told that DEC sold an RSX-11M emulator that run as a process
on VMS for people who had old RSX code they wanted to run. Is this true?
Yes, it is. This is the start of the SPD (see
http://www.mentec.com/SPDS/vaxrsx.html for the whole thing):
SPD 26.73.08
VAX-11 RSX, Version 2.5 is a member of a family of operating system and other software
products produced by
Mentec Inc. for the PDP-11 family of computers. It is available from Mentec Inc. or
Digital Equipment
Corporation subject to a software license issued according to standard terms and
conditions.
Of course you could run VMS v3.5 and an 11/780.
The instructions for compatibility were built in to the 11/7xx series
and the emulation which came lator was an unbundling of the features
which were in VMS 2.x and 3.x and the older 11/780 through 8650.
Bill