COMPRDDS 97A
Copyright (c) 1996  Allegro Consultants, Inc.  (408) 252-2330J

Written by Stan Sieler (sieler@gmail.com).

COMPRDDS is an unsupported privileged program that tries to3
enable (or disable) DDS hardware data compression.

To ENABLE compression, run COMPRDDS with a NEGATIVE ldev of the
DDS drive in PARM.  E.g., RUN COMPRDDS;PARM = -7

To DISABLE compression, run COMPRDDS with a POSITIVE ldev of the
DDS drive in PARM.  E.g., RUN COMPRDDS;PARM = 7I

NOTE: this program has no way of determining if compression is
actually enabled or disabled.  To determine that, try theo
following:

   1) logon as MANAGER.SYS
   2) enter:   sysdiag
   3) enter:   run scsidds; ldev=7; section=interactiveh
                            (or whatever ldev your DDS is)
   4) enter:   modesense
   5) enter:   4
   6) look for:4
         DCE - Data Compression Enable           = 0
         DCC - Data Compression Capable          = 1
         DDE - Data Decompression Enable         = 1

      The "DCE" line will have a 1 if compression is enabled, anda
      a 0 if it is not enabled.a

   7) enter:   exit           (to terminate SCSIDDS)
   8) enter:   exit           (to terminate sysdiag/DUI)


COMPRDDS 20140821  Copyright (c) 1996 Allegro Consultants, Inc.
(email: sieler@gmail.com)