Digital Standard Mumps

Bill Gunshannon bill.gunshannon at
Thu Apr 18 14:07:17 CDT 2019

On 4/18/19 2:41 PM, Dan Veeneman wrote:
> On 4/18/2019 2:27 PM, Paul Koning via cctalk wrote:
>> my memory is that DSM-11 is an operating system all its own, not just a language processor running on top of a standard OS like RSTS.
> In the late 1980s and early 1990s, we used DSM running on VMS 4.7 for a
> nationwide (United States) mortgage credit reporting system.

DSM-11 on the PDP-11 was an OS all its own.  I just looked in my
Software Handbook and on the VAX it was a VMS Language Processor.
That's pretty much what it has become today although it did start
out as a complete system running on bare iron.


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