
                                                          Page 1


                                                     May 15, 1989


                                   TAPCOP.TXT

        Table of Contents:

             New Information for all users . . . . . . . . . . 1

             Information for RT-11, Version 4 Users  . . . . . 2



                                 NEW INFORMATION

             This tape continues the traditions perfected over the past
        few SIG tapes.  There are no new instructions to users in this
        file.

                              IMPORTANT INFORMATION

        The annotated tape directory file ANOTED.DIR has been renamed to
        ANOTED.TXT to avoid making VMS think it is a subdirectory.

             The XD subdevice files are no longer included on the tape.
        If anyone needs that capability, previous tapes have the XD
        stuff, and the section on the following page explains how to
        recover files from within subdevices without the LD handler.

             Now that RT-11 Version 5 has the LD (logical disk) handler,
        files may be easily broken down after they have been copied from
        the SIG tape.  This is done by typing the KMON command

        MOUNT LDn FILE.DEV.

        Files within the subdevice FILE.DEV can then be copied.

             Directory listings are no longer included in the file
        TAPDIR.TXT.  At the end of each submission description, the
        number of files and the actual subdevice block size is given.
        The actual size of the files within the subdevice can be deter-
        mined from the directory of the subdevice after it is mounted.
        Wherever possible, subdevices have been created with only one
        directory segment to reduce the size.

                                                          Page 2


                            RT VERSION 4 INFORMATION


             If you are using RT-11, Version 4, you will need to use the
        subdevice handler XD, or any other subdevice handler you may
        have.  There are two ways to pull files from this tape.  The tape
        has been built so that each .DEV subdevice file submission is no
        larger than a double density floppy, 988 blocks.
        The first way to pull off a sub-
        mission is as follows:

        COPY/DEV/FILE MT:XXXXXX.DEV DX:

        The above command will transfer the submission XXXXXX.DEV from
        the magnetic tape and place it on a single-density floppy.  The
        floppy will have a regular RT-11 directory and will be usable as
        an RT-11 device.  Note that if the subdevice file was smaller
        than 988 blocks, the floppy capacity will also appear to be less
        than 988 blocks.

             If you do not have floppies, or you want to take advantage
        of the virtual-device system, do the following:

        First of all you need to copy the virtual-device file from the
        magnetic tape to a working disk using PIP.

        COPY MT:XXXXXX.DEV DK:

        Then attach the subdevice handler XD to the file using the pro-
        gram XDATCH.

        R XDATCH
        *XXXXXX=XD0:
        *^C

        The virtual-device XD0: is now attached and can be accessed as a
        disk device using regular RT-11 commands like DIR.  DIR XD: will
        list a directory of the virtual-device.
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