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-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx]
On Behalf Of Raymond Meade
Sent: Wednesday, July 09, 2008 3:01 PM
To: rpg400-l@xxxxxxxxxxxx
Subject: RPG Migration
Re: IBM Sys/36 (Advanced 36) and RPG-II migration.
A question for all ye IBM RPG-II lovers (current and former),
To convert from IBM RPG-II to IBM RPG-ILE
Over several years I have read many sources which have been revealing with
respect to IBM's continued phasing out of all "versions" of the Sys/36 and
IBM RPG-II code. Here is a situation and a proposal for which I would
appreciate receipt of your ideas and comments that may provide information
as to our quest of RPG migration.
We currently have installed an IBM 9402-436 Processor which is used only
to run multiple M36 machines for production purposes. The processor is at
release V4R2. This old IBM processor can also function as any regular
as400. I have converted and compiled several of the RPG-II programs to
RPG-ILE and they seem to compile and run okay in the 400 environment on
this old processor.
I am considering converting all of the RPG-II code to RPG-ILE which would
be done on this same old processor. Do you think that it could then be
feasible to move this RPG-ILE source code to a later model processor (for
example one that was currently running on V5R3) and then recompile it on
the newer model processor? Our old processor has a 6390 IBM 8mm tape drive
which could possibly be read by an IBM 8mm tape drive on the newer
processor, which could then provide a method for moving the source code.
If this 8mm method of transfer would not work, hopefully there would be
available another method.
I am concerned if the above steps could be ignored or stopped if the
proposed V5R3 release level on the newer model processor were unable to
recognize or otherwise compile the ported RPG-ILE source from the old
processor. These thoughts crossed my mind while I was reading two IBM
Redpapers, one of which dealt with conversion to V6R1 and another Redpaper
which dealt with conversion to V5R3.
Among the same general concerns pertaining to the recognition and
compatibility of ported RPG-ILE source to the proposed new processor is
that of license keys. Would the presence of license keys on the new
processor pose a problem not dealt with in the above steps?
Please keep in mind that for current (ongoing) production purposes, the
RPG-II code would execute on our old processor only, and the RPG-ILE code
once completed and moved would execute on the new V5R3 processor only. At
the stage when the move to the V5R3 processor is complete, it would become
the sole CPU in use.
Another concern about this proposal is the amount of elapsed time that
would occur until all of the RPG-ILE source code could actually be moved
to the target new processor. Obviously it would be necessary to at least
confirm that several of the RPG-ILE sources from the old processor would
actually compile on the target newer processor, and that such
confirmations should occur at least every few months. The elapsed time
also brings to mind concerns if the target new processor would be
available in the future at the target version level along with the other
"corresponding" supporting software that exists on the old processor such
as Advanced Function Printing (IPDS), to name just one.
The total amount of elapsed time would be several years in that the old
RPG-II sources on the old processor will have to be converted to RPG-ILE
before any porting, either partial or complete, should begin.
If you can, please let me know what you think. If this is not feasible
than I am leaning toward a non IBM option for our RPG migration. Your
consideration is most appreciated.
Sincerely,
Raymond Meade
E-Mail: paulwmeadeagency@xxxxxxxxx
Telephone: (405)-524-1541
Fax: (405)-524-6156
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