RE: Re: GCIC Full screen applications - Update

Paul

 

The editor does all the modifications in memory.

When you hit save it writes the file to a  temporary file and then copies
the file to your real destination file.

But that is for record oriented files with "normal" lrecl etc. – and that
was in VM 

 

The other batch program (ROCZAP) if I can find it – will read a file, do a
ver and a rep at a specific record and offset and then either  rewrite the
file as is or copy it.

Exact copy – works on tapes as well as disk and updates in place , if I
remember correctly.

 

I used it a lot for fixing bad data when running with checkpoints under IMS.


IMS  had something called GSAM files – which were just ordinary sequential
files but running under IMS control - it calclulated RBA's for the restart
and you could not edit with an editor or you @#@ed up the RBA

But I could fix data with this program.

 

I haven't really thought about How I am going to do the editor in MVS 3.8

Never worked n such an old system and I am looking for documentation right
now – Something comparable to authorized assembler services for that
version.

 

I plan to do my development on a different box where I have normal tools and
then move it over to MVS3.8 when it is usable enough to finis the
development.

Have to be careful not to use functions or facilites that did not exist back
in prehistoric times.

 

For instance I don't even know how to call a tso command or execute an exec
from a command processor in 3.8

 

No problem to do it in Z/OS or OS but I don’t know what services were
available back in the stone age. -:-)

Unless I hear  different I guess I'll start doing it the same way I am
familiar with  and see what happens.

 

Code is code and I have no problems with that but I need to find a TSO
reference for the old system as well as a book that explains some of the
more advanced assembler stuff.

Otherwise It will be trial and error to see what works and what doesn't

 

Any body have any suggestions where to find references for 3.8 system stuff
etc..

 

The oldest IBM BOOK set of diskettes that I still have, is for the OS/390
collection from Dec 1997

I browsed bitsavers a bit but did not find anything like an MVS3,8 directory

 

Where do I start looking for the older stuff – anybody have any pointers.

Specifically TSO  -CLISTS - authorized assembler services and Macros

 

Roc

 

 

  _____  

From: [email protected] [mailto:[email protected]] On Behalf Of
kerravon86
Sent: Wednesday, October 06, 2010 19:21 
To: [email protected]
Subject: [H390-VM] Re: GCIC Full screen applications - Update

 

  

--- In [email protected] <mailto:H390-VM%40yahoogroups.com> , "Rocky"
<rocsystems@...> wrote:
>
> Handling RECFM=U ?
> 
> Never gave it muich thought for the editor.
> 
> Short answer is Yes

As in, yes, your editor will recognize x'15'
line terminators?

> But I don't want to take this farther because then 
> you'll ask me to give you
> something and I don't have the time to look for it or modify it.
> 
> What I have does not work on a PDS, could probably 
> be modified but I don't have the time.

My RECFM=U files are sequential, not PDSes.

> I used to have something that could Zap regular 
> RECFM=u Files in place. 
> 
> Don't ask me to look for it – Not part of the editor. ;-)

I don't want a zap, I want an editor.

Speaking of which - when editting a sequential
file, how do you actually change the data? Do
you update in place, or write a new file?

BFN. Paul.