[Simh] What OS was this {HP2100}

[J. David Bryan]

On Saturday, November 5, 2011 at 14:02, Gregg Levine wrote:

> Now how old is this particular system?

The several versions of DOS were available from about 1969-1976 or so.  It
coexisted for a time with RTE (the Real-Time Executive) and TSB
(Time-Shared BASIC) but eventually was dropped in favor of RTE.

The CHM has a DOS brochure here:

  
http://archive.computerhistory.org/resources/text/HP/HP.2120DOS.1971.1026462
05.pdf


                                      -- Dave