I agree. MFT had a P command too, as I recall. You had to be able to
stop the readers and writers, even though TSO, multitasking and all the
good stuff hadn't been invented yet.
Clem
Charles Mills wrote:
The START command has been around a LOT longer than the STOP command
Really? Could be; I was a programmer, not a console operator, but that
surprises me.
I find evidence of a P command (at least for devices) going back to MVT
here:
http://www.neurotica.com/wiki/TechInfo:OS:IBM_Mainframes:OS/360_Installation
#Starting_the_OS.2F360_MVT_system
Charles
-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On
Behalf Of Rich Greenberg
Sent: Tuesday, December 04, 2012 5:11 PM
To: [email protected]
Subject: Re: Historical question regarding the stop command
In article <[email protected]>
you write:
I'm sure this has been asked and answered somewhere in the dusty
archives of this list, but I honestly couldn't figure out a way to
formulate a search for it that would return mostly useful
information....
Does anyone know the historical/technical reason for some products, (at
our shop CA-Datacom and possibly SAS SHARe) requiring you to START a
task, to STOP their started task? I know it's ridiculous of me but it
drives me nuts to have to start something when I want to stop something
else.
I've written code of my own which handles the STOP and MODIFY commands,
so I know that it's not extremely difficult; it's pretty well
documented in the manuals too if I recall. I wrote the code years ago,
so it's not like the ability just became available, either.
So - anyone know why this particular technique is used? Is there some
technical reason for it?
Tim et al, This is a pure WAG:
The START command has been around a LOT longer than the STOP command, so if
A is running and you can't say STOP A, then you START B, B starts running,
locates A, taps A on the shoulder, A recognizes this tap and ends, B ends
normally.
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