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000139_joyce_haferman@yahoo.com_Fri Jun 6 14:05:28 EDT 2003.msg
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Article: 14365 of comp.protocols.kermit.misc
Path: newsmaster.cc.columbia.edu!panix!nycmny1-snh1.gtei.net!news.gtei.net!bloom-beacon.mit.edu!newsfeed.stanford.edu!postnews1.google.com!not-for-mail
From: joyce_haferman@yahoo.com (Joyce)
Newsgroups: comp.protocols.kermit.misc
Subject: Re: cutape
Date: 5 Jun 2003 15:54:18 -0700
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fdc@columbia.edu (Frank da Cruz) wrote in message news:<bbnien$ebu$1@watsol.cc.columbia.edu>...
> In article <3834495c.0306041602.353fa8d6@posting.google.com>,
> Joyce <joyce_haferman@yahoo.com> wrote:
> : Yes, I really need to write an IBM mainframe format tape. So, it
> : sounds like I have to try the tape on the IBM mainframe to see if it
> : can read it. Does the IBM mainframe read variable block format?
> :
> I should hope so, but the method for doing it depends on the specific
> operating system -- CMS, MVS, etc. You can find some information about
> this here:
>
> ftp://kermit.columbia.edu/kermit/a/aatape.txt
>
> : I also need to be able to read EBCDIC tapes coming from an IBM
> : mainframe on an UNIX system. Do you know any software that runs on
> : UNIX (preferably - Solaris box) that can read an EBCDIC tape that has
> : an IBM label? I am willing to purchase the software.
> :
> You should be able to do this with dd, except dd doesn't understand
> labels or anything -- it thinks everything on the tape is a file.
> What ostape does is use dd to read a label, then ostape decodes the
> label, then it uses dd to read the file, which it stores under the name
> found in the label.
>
> If you are a programmer, you should be able to make these programs work
> in Solaris, just as they did in SunOS. Unfortunately we can't do this
> for you because we don't have tape drives any more to test the result.
> As I said before, it is probably some very minor API difference between
> SunOS and Solaris that is causing file marks to be omitted when writing
> labels, or to be ignored when reading them.
>
> If you are not a programmer, then perhaps some kind soul reading this
> thread will help. The programs in question are:
>
> cutape.c: Writes tapes in ANSI D or OS SL VB format:
> ftp://kermit.columbia.edu/kermit/tu/tuuwao.c
>
> ostape.c: Reads OS SL VB tape:
> ftp://kermit.columbia.edu/kermit/tu/tuuros.c
>
> - Frank
Thanks for the details of how the tape software works - I'll see if
one of the programmers at work can fix it for Solaris.