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MTY3XXX.DOC -- Changes from V1 to V3
March 1979






























COPYRIGHT (C) 1974,1978,1979 BY
DIGITAL EQUIPMENT CORPORATION, MAYNARD, MASS.


THIS SOFTWARE IS FURNISHED UNDER A LICENSE AND MAY BE USED AND  COPIED
ONLY  IN  ACCORDANCE  WITH  THE  TERMS  OF  SUCH  LICENSE AND WITH THE
INCLUSION OF THE ABOVE COPYRIGHT NOTICE.  THIS SOFTWARE OR  ANY  OTHER
COPIES  THEREOF MAY NOT BE PROVIDED OR OTHERWISE MADE AVAILABLE TO ANY
OTHER PERSON.  NO TITLE TO AND OWNERSHIP OF  THE  SOFTWARE  IS  HEREBY
TRANSFERRED.

THE INFORMATION IN THIS SOFTWARE IS SUBJECT TO CHANGE  WITHOUT  NOTICE
AND  SHOULD  NOT  BE  CONSTRUED  AS  A COMMITMENT BY DIGITAL EQUIPMENT
CORPORATION.

DIGITAL ASSUMES NO RESPONSIBILITY FOR THE USE OR  RELIABILITY  OF  ITS
SOFTWARE ON EQUIPMENT WHICH IS NOT SUPPLIED BY DIGITAL.

MTY3.DOC                                                        Page 2


1.0  SUMMARY

The purpose of this release is to correct problems when attempting  to
duplicate FRS format mag tapes.  This version also adds the ability to
copy a specific number of files and to position the tapes  before  and
after the operation.

This version of MTCOPY must be loaded with  HELPER.   No  deficiencies
have  been  reported to earlier versions.  This release implements the
suggestion of being able to copy FRS tapes and defends against records
longer than the maximum it can handle.  It has been tested on 5.06 and
5.07.  MTCOPY has no DATE75 dependencies.

MTCOPY is documented in its .HLP file.

The purpose of MTCOPY is to copy one or more files of a mag tape.  The
default  is  to copy and verify an entire tape.  It can copy or verify
or both any set of files on a tape.  The user is  given  control  over
tape positioning and densities.

MTY3.DOC                                                        Page 3


2.0  CHANGES

51   Allow spaces, tabs, and comments in the command line.

52   Add switches  for  positioning.   Refer  to  the  .HLP  file  for
     details.

53   Improve the diagnostics resulting from command scanning errors

54   Convert to use C.MAC as a universal file.

55   Convert to call HELPER.REL to read the help text.

56   Add defaults to apply accross commands.  See the  .HLP  file  for
     details.

57   Detect records which are larger than can be handled.

60   Expand the buffer size to handle FRS tapes.

61   Expand to handle the command sequence ".RUN MTCOPY (...)".

62   Support the error message standard.

63   Allow MTCOPY to be called by a  monitor  allow  the  name  to  be
     preceeded by a device name.

MTY3.DOC                                                        Page 4


3.0  KNOWN DEFICIENCIES

None.



4.0  CHANGES IN INSTALLATION INSTRUCTIONS

Compile with C.UNV (UNIVERSAL file).  Load with HELPER.REL:

  .LOAD U.MAC+C.MAC,MTCOPY.MAC,HELPER.REL%"SEGMENT:LOW"

Then place MTCOPY.SAV on SYS:  and MTCOPY.HLP on HLP:.



[End of MTCOPY.DOC]