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000137_fdc@columbia.edu_Thu Jun 5 10:01:24 EDT 2003.msg
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Article: 14363 of comp.protocols.kermit.misc
Path: newsmaster.cc.columbia.edu!news.columbia.edu!news-not-for-mail
From: fdc@columbia.edu (Frank da Cruz)
Newsgroups: comp.protocols.kermit.misc
Subject: Re: cutape
Date: 5 Jun 2003 10:00:55 -0400
Organization: Columbia University
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References: <3834495c.0306031601.34eb05ba@posting.google.com> <bbl8ah$pvn$1@watsol.cc.columbia.edu> <3834495c.0306041602.353fa8d6@posting.google.com>
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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