[Info-vax] Time to turn DECUServe into a mixed VMScluster?

[Dan Cross]

In article <mdd1qitmvme.fsf at panix5.panix.com>,
Rich Alderson  <news at alderson.users.panix.com> wrote:
>Bob Gezelter <gezelter at rlgsc.com> writes:
>
>> VAX/VMS DCL was present at the initial public handbook point, and highly
>> likely earlier.
>
>> RSX-11M-PLUS genesis is later. RSX-11M DCL is well later (I was a field test
>> site for RSX-11M 3.2).
>
>> IAS I cannot speak to.  Also, did not encounter RSTS/E till later.
>
>> Somewhere I had a TOPS-20 reference card, but cannot go looking for it.
>
>The TOPS-20 EXEC is very different from DCL, and predates the VAX and VMS by
>several years.  Most of the lessons learned from EXEC were thrown away.

Dan Murphy's document on the history of TOPS-20 discusses this
somewhat.  It seems that TOPS-20's EXEC not only influenced DCL
but was also influenced by DCL; ironically, the big change they
introduced for DCL compatibility was not picked up by VMS,
which went with the TENEX mechanism instead.  Oops.

https://opost.com/tenex/hbook.html

	- Dan C.