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Assembler language insructions

 
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pc68909

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Joined: 22 Apr 2009
Posts: 4
Location: hyderabad

PostPosted: Wed May 27, 2009 2:52 pm    Post subject: Assembler language insructions
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Hello friends...

Please explain the meaning & format of the following assembly instruction with example:
MVCIN
MVCL
MVCLE
MVPG(facility 1)
MVPG(facility 2)
MVST
MVCP
MVCS
MVCDK
MVCK
MVCSK
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enrico-sorichetti

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Joined: 14 Mar 2007
Posts: 10375
Location: italy

PostPosted: Wed May 27, 2009 3:39 pm    Post subject: Reply to: assembler language insructions
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manual reading day was yesterday, today You are on Your own

here is a pointer to a POP, not the latest one but enough to answer Your question
http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/DZ9ZR003/CCONTENTS?SHELF=DZ9ZBK03&DN=SA22-7832-03&DT=20040504121320
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pc68909

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Joined: 22 Apr 2009
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PostPosted: Wed May 27, 2009 4:20 pm    Post subject:
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Thnx......I can see some instructions atleat now.
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UmeySan

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Joined: 22 Aug 2006
Posts: 757
Location: Germany

PostPosted: Thu May 28, 2009 5:12 pm    Post subject:
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@ pc68909

Are you someone of thesse developers, programming, designing and implementating high performance authorized routines. SRB and cross memory mode ???

Then you'll need to know about MVCSK & MVCDK !!!

Otherwise ???
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pc68909

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PostPosted: Thu May 28, 2009 5:36 pm    Post subject:
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Hello UmeySan

actually need to develop cobol equivalent for assembly language program...so learning assembly instructions....
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Bill O'Boyle

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Joined: 14 Jan 2008
Posts: 2504
Location: Atlanta, Georgia, USA

PostPosted: Thu May 28, 2009 7:20 pm    Post subject: Reply to: assembler language insructions
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If (by chance) you're writing what UmeySan has said, Google ===> "advanced assembler language and mvs interfaces". You'll find a book with this title (out of print) but commands some serious bucks, even when used!

When it was in print, it cost $80.00 and that was 6-8 years ago.

Regards,
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dick scherrer

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Joined: 23 Nov 2006
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PostPosted: Thu May 28, 2009 11:31 pm    Post subject:
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Hello,

Quote:
actually need to develop cobol equivalent for assembly language program...so learning assembly instructions....
Suggest you not try to re-code the assembler instruction-for-instruction in cobol. . . Re-write the functionality - if possible, but not the specific lines of code.

Quote:
programming, designing and implementating high performance authorized routines
Depending on just what the assembler module(s) accomplish, you may not be able completely replace them in cobol.

While learning assembler is valuable, i believe understanding the scope of this "re-write" may be more immediate. Suggest you itemize what this code accomplishes and deterine if this can be written in cobol. fwiw. . .
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pc68909

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PostPosted: Fri May 29, 2009 12:48 pm    Post subject:
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Hello Bill O'Boyle
Thnx for the help provided by u......

YA ...it wont be 100% automated .some manual tasks will be left in cobol equivalent.I am trying to learn the instructions first ...I agree that all instructions dont have direct cobol equivalent.So by understanding the instructions corresponding logic for that have to be developed in cobol....
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UmeySan

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PostPosted: Tue Jun 02, 2009 3:22 pm    Post subject:
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@ pc68909

Dear Sir !

As i had given advice to some projects dealing about assembler conversations to Cobol, i allways realized the leading thought about a
automatic code conversation.

Plse Sir, vorget about such pipe dreams. I saw several Tool and i saw the
resulting code of such tools. The further maintenance of such code would be extremely time-consuming.

The very best way is, to do what Dick already mentioned: no re-coding,
re-writing the functionality. So you also have the chance to re-engineer the Programm and include new technologies that are up to date now.

I know, this is not always that, what the consultancy market prefers.
To much work, low yield, also longer project timeline. And all these jabbering about the divine and high technologie converters, i really could not hear it anymore whitout a a queasy feeling.

Good luck with your project.
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