Re: What is 'Program Logical Manuals'?

Johnny

Since you are something of a "Johnny come lately" - sorry, I couldn't resist that - it's idiomatic for a newcomer - you won't, like all the grey beards on the list, remember the "Program Logic Manual" available usually with a "Y" letter - in place of "C" or "A" - for licenced users of a software product.

Supposedly it contained sufficient information abort the product that the folk responsible for diagnosing problems with the product could get a handle on what was wrong.

Indeed it was also useful for people really to understand their product since the regular manuals never seemed to have sufficient information to get the best out of the product - or alternatively just knowing the raw logic avoided the misunderstandings/ambiguities propagated by the authors of the regular manuals.

I haven't been looking for any such manuals lately but I guess they have become a "thing of the past". The nearest equivalent these days I suppose is the generic "Diagnosis" manual.

Whether or not even a regular manual contains control block relationship diagrams is a matter for the manual author and the developers who feed him/her their stuff. Thus it's not guaranteed that any "service" manual actually will contain such diagrams although probably they should.

In presenting troublesome operands - naturally I have NCP in mind - I have even had to construct such diagrams from the text descriptions of control blocks - so, if you want a better picture, you can get out a paper and pencil. <g> I just happen to be reminded of this lately having rediscovered these diagrams in a presentation while researching another thread.

Incidentally, I hope you are aware that "core dump" means a dump of the system storage where the "core" refers to an ancient technology for computer storage.

Chris Mason

----- Original Message ----- From: "Johnny Luo" <johnny.xingkui.luo@xxxxxxxxxxxx>
Newsgroups: bit.listserv.ibm-main
To: <IBM-MAIN@xxxxxxxxxxx>
Sent: Thursday, May 31, 2007 3:19 PM
Subject: What is 'Program Logical Manuals'?


I got this website while doing google search:

http://www.users.cloud9.net/~bradmcc/ibmsongbook.html

At the bottom of the page there is an example MVS task management control
block diagram and it says:

*IBM* <http://www.users.cloud9.net/~bradmcc/ibmsongbook.html> Program Logic
Manuals are full of diagrams like the one above (I apologize for the poor
quality of the reproduction!). The diagrams show how system control
information is stored in "control blocks", and how fields in a given control
block point to other related control blocks. These diagrams help programmers
and debuggers to find information about the system, for program development
and debugging (*esp.* finding information in "core dumps").

I'm interested and just wonder what is 'program logic manual'? I know IBM
has manuals named MVS Data Areas but they don't have diagrams.

Thanks.

--
Best Regards,
Johnny Luo

----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to listserv@xxxxxxxxxxx with the message: GET IBM-MAIN INFO
Search the archives at http://bama.ua.edu/archives/ibm-main.html
.

Relevant Pages

  • Re: CitroenBX GTI interior lights
    ... and the picture shows them to the left of the steering wheel and just to the ... If you want a scan of the diagrams (and I ... If its any help I've got the Haynes manuals for the 83-91 BX petrol & ... top glove compartement, towards the console." ...
    (uk.rec.cars.maintenance)
  • Re: OT very basic computer question
    ... I can never understand manuals that give only pictures. ... Had a disposable panaramic camera once that I never did understand - so I disposed of it! ... There are diagrams next to text, but the text refers to a diagram on the next page, which is very confusing. ... Scottish music, food intolerance, and Mac logic fonts ...
    (rec.crafts.textiles.quilting)
  • Re: WTD:Audiolab 8000PX service manual
    ... >> When you find an online/offline source of they then let us know!...... ... I have also made copies of some manuals, etc, available to people in the ... making service manuals and diagrams available. ... was standard practice to provide these with the purchase of the item to ...
    (uk.rec.audio)
  • Re: What is Program Logical Manuals?
    ... Chris Mason ... What is 'Program Logical Manuals'? ... Indeed it was also useful for people really to understand their product since the regular manuals never seemed to have sufficient information to get the best out of the product - or alternatively just knowing the raw logic avoided the misunderstandings/ambiguities propagated by the authors of the regular manuals. ... Whether or not even a regular manual contains control block relationship diagrams is a matter for the manual author and the developers who feed him/her their stuff. ...
    (bit.listserv.ibm-main)