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From: SOMITCW@VCCSCENT.BITNET
Newsgroups: comp.lang.asm370
Subject: Problems with Assembly
Message-ID: <9106271408.AA25696@ucbvax.Berkeley.EDU>
Date: 27 Jun 91 14:07:03 GMT
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Reply-To: IBM 370 Assembly Programming Discussion List
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 On Wed, 26 Jun 1991, xanth!cs.odu.edu!wilso_d@LLL-WINKEN.LLNL.GOV said;
>                     The problem I am having is I don't seem to be
>able to define a large blocksize in a file using DTFMT (for tapes).

    The maximum blocksize is 32760 for EBCDIC, 2048 for ASCII.
  What blocksize are you attempting?

    If you could be more specific about how you are unable to define
 a large blocksize, someone could probably help you quickly.
 An error message perhaps?  An addressibility or syntax error?

    I haven't worked with VSE for seven years, but my guess of your
 problem is that you are defining the I/O buffers with 'DC' instead
 of 'DS', or you are not putting the I/O buffers after all other
 code, constants, etc.  GETVIS is a much better place for I/O buffers
 than putting them in a program.  I believe the system will allocate
 your I/O buffers in GETVIS if you don't code them in the program.
 Or is that only for disk?  You can also allocate I/O buffers in GETVIS
 if the system doesn't do it for you.