[Info-vax] OT: obscure PDP11 OSes (even more dinosaury)

[Lederman]

Siemens used DOS-11 to build the software that ran on their smaller telecomnunications
switch that was PDP-11/34 based.  I believe they eventually switched to something
newer, probably RT-11

I once compared the DOS-11 documentation with what could be seen of XXDP,
and except for the name they were identical.  XXDP diagnostic tapes and disks
were in DOS-11 format, and all of the command line utilities were the same. I
don't think many people realized there was a "free" PDP-11 operating system.


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