The following is an partial extract from the PCLV11-J Manual.


      3.4.4   Software


      Distribution Media :      Distribution Media :

           a) Diskette, RX01/RX02 single density.

           b) Cartridge tape (QJV13/U/S/MDC300XL - QIC-02), bootable.

           For cartridge tape, an RT-11 run-time system is required and
           will be charged for, as the tape is distributed as a bootable
           RT-11 system.


      Software modules distributed to support the PCLV11-J are :

         * - CUTIL.SAV the cartridge diagnostic utility
        ** - SCINIT.SAV the cartridge tape initialization program
           - SC.MAC driver handler for RT-11/TSX+ operating systems
           - SC.RSX driver handler for RSX-11M+ operation systems
           - SBRU.TSK the modified RSX-11M+ BRU utility
           - SAVRES.SAV the Webster save/restore image mode utility
       *** - SCBOOT.SAV the bootable tape generator
           - SB.SYS the bootable device handler


      * CUTIL - Cartridge utility      * CUTIL - Cartridge utility

      CUTIL is a diagnostic program for  the  cartridge  tape  drive.  The
      following commands are supported:

      A - Set transfer count.  Default is one block (256 words).
      B - Rewind cartridge to beginning of tape.
      E - Write file mark.
      F - Search forward and find next file mark.
      G - Compare read and write buffers.
      L - List, in ASCII, the number of bytes specified from the read
          buffer. (Defaults to forty bytes unless number length
          supplied.)
      M - Move data from read to write buffer.
      N - Select drive.
      P - Position. Space forward one block.
      R - Read a block.
      S - Read status information.
      U - Issue a reset.
      W - Write a block.
      X - Examine the specified register:
           C1 command and status
           WC transfer count
           BA base address
           BX base address extension
      Y - Retension cartridge.
      Z - Erase cartridge.


      ** SCINIT - Cartridge Initializer      ** SCINIT - Cartridge Initializer

      This program initializes a cartridge, erasing the  entire  tape  and
      writing  a  dummy  file as the first file.  An initialized cartridge
      has the format:

      VOL1 HDR1 * dummy record * EOF1 * blank tape

      with the dummy file having the name 'ZEROED.FIL' and a zero sequence
      number.    This  file  will  not  appear  on  any  directory  of the
      cartridge.  A cartridge must be initialized by SCINIT before  it  is
      first  used  otherwise  errors  will  occur  during  read  or  write
      operations.

      Note :

           VOL1 :      ANSI volume label
           HDR1 :      ANSI file header label
           *    :      File mark
           EOF1 :      ANSI end of file label
           blank tape: Erased tape



      *** SCBOOT - Bootable Cartridge Creator      *** SCBOOT - Bootable Cartridge Creator

      A bootable cartridge has the same format as a bootable magtape:

      VOL1 SCBOOT HDR1 * disc image * EOF1 *

      where SCBOOT is the soft boot handler.  This  bootstrap  is  created
      from the SB handler, which treats the cartridge as a file-structured
      device.  The disc image is a file which contains  a  runnable  RT-11
      image,  the  SB.SYS  special handler, and a bootstrap.  The image is
      best created as a logical disc.


      Device Handlers      Device Handlers


      SC:      SC:
      The SC: device handler which emulates the DEC MT handler.  SC.MAC is
      the  device  handler  for RT-11/TSX+ operating systems and SC:RSX is
      the device handler for RSX-11M+ operating systems.


      SB:      SB:
      The SB: device handler allows the cartridge to be  used  as  a  read
      only  random  access  device  and enables RT-11 to be booted and run
      from a cartridge tape.


      3.4.5  Creation of a Bootable Cartridge


      An additional device handler (SB) has been provided to  allow  RT-11
      to be booted and run from cartridge tape.  A bootable cartridge tape
      is created as follows :
      (NB assume master distribution RT-11 on device DK:)

      First create a logical disc image of the  required  RT-11  system  ,
      including the SB.SYS handler.
      a) create rt2.dsk/allocate:3000.
      b) mount ld0 rt2
      c) init/noq ld0:
      d) copy/sys dk: ld0:

      Put the SB handler's bootstrap in block zero on the logical disc  as
      the primary boot.
      e) copy/boot:SB ld0:rt11sj.sys ld0:

      Load the cartridge tape into the drive and initialize it.
      f) r scinit

      Create the cartridge tape boot file  SCBOOT.BOT.    When  SCBOOT.SAV
      executes,  it  requires the boot file (SCBOOT.BOT) be on device DK:.
      The SCBOOT.BOT file is created as follows:

      Copy the RT-11 disc image to a file
      g) copy dk:rt2.dsk dk:scboot.bot

      Find the boot file's starting block number
      h) dir/block scboot.bot

      Delete the boot file. (You may have to unprotect it first.)
      i) unpro scboot.bot
      j) del scboot.bot

      Recreate the boot file  as  a  one  block  file  containing  the  SB
      handler's bootstrap.
      k) create scboot.bot/start:n./allocate:1
             where n is the starting block number from step h.

      Now create the bootable cartridge.
      l) r scboot.sav and respond to the prompt with rt2.dsk

      The system image file will be written to  the  cartridge,  with  the
      bootstrap  file  SCBOOT.BOT  written  as the second block.  When the
      program  finishes  successfully,  the  following  message  will   be
      displayed:
           ** The SC: Cartridge is now Hardware Bootable **
           ** The system image file is SC:SYSTEM.FIL     **

      A bootable cartridge tape now exists. 


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