[email protected] (Vernooij, CP  - KLM , SPLXM) writes:
> The big difference to notice is:
> You logon to a *nix system via Telnet or so.
> You don't logon to a mainframe. You logon to an application on a
> mainframe. So, you don't logon *via* TSO, you logon *to* TSO.

re:
http://www.garlic.com/~lynn/2014d.html#50 Can we logon to TSO witout having 
TN3270 up ?

aka the "mainframe" started out batch/job centric ... while the
various open, online systems started out being people centric

the early mainframe "monitors" (like cics) attempted to implement
person centric paradigm layer ... attempting to isolate it from the
underlying mainframe batch/job centric paradigm. these monitors would
do large block mainframe batch oriented resource allocation at startup
and then make as little use as possible of mainframe system services
in doing their own operation ... also one of the reasons that it took
cics almost 40yrs to achieve multiprocessor exploitation

The Evolution of CICS: CICS and Multi-region Operation (1980)
http://web.archive.org/web/20040705000349/http://www.yelavich.com/history/ev198001.htm

past cics (&/or bdam) posts
http://www.garlic.com/~lynn/submain.html#cics

-- 
virtualization experience starting Jan1968, online at home since Mar1970

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