On 12/22/2013 9:56 AM, Paul Gilmartin wrote:
On Sun, 22 Dec 2013 10:01:33 -0600, Andreas F. Geissbuehler wrote:
Straight from a slowly fading memory...
In the early '70 IBM released a new and improved CRJE called TSO, a TCAM application
program. I believe it was part of IBM's "worst-ever" release, OS/MVT Release
19. TSO brought us Sub-Tasking and related macros ATTACH and DETACH using a newly
expanded control block called TCB mapped by IKJTCB among many other IKJ's of TSO. ...
ATTACH/DETACH appeared contemporaneously with TSO!? I'm astonished!
I'd have guessed they were much older, perhaps even aboriginal OS/360.
Was there no multiprocessing mechanism older than TSO? RYO, I suppose.
That's what I understand JES and CICS (others?) do.
-- gil
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That can't be right. MVT had ATTACH/DETACH.
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