Aucbvax.5500
fa.info-vax
utzoo!decvax!ucbvax!info-vax
Thu Dec 17 12:20:11 1981
reading IBM tape on VMS
>From decvax!duke!unc!lynn@Berkeley Thu Dec 17 09:28:19 1981

I have two suggestions for reading a tape with DCB=(LRECL=80,BLKSIZE=3920).

1.  Mount the tape foreign, with a large blocksize.
	$mount mt:/f/block=3920
	$copy mt: temp.tmp

    This puts the file into temp.tmp as 3920 byte records, which is not
    immediately useful.  However, I think TECO can read such a file and
    insert the record delimiters every 80 characters.

2.  Fortran under VMS can in fact read amazing things.  Mount the tape
    foreign, and either open the file as fixed length 3920 byte records
    (FORMATTED), or bypass all of the record management stuff by calling
    SYS$QIOW directly.  (That gets a little complicated, but if you need
    more information you can call me.)

				Lynn F. TenEyck
				University of North Carolina at Chapel Hill
				(919) 966-5045
				duke!unc!lynn

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