FILE: Notice.txt - 11/20/90

    Notice to Warp/UnWarp users:

    If you are currently using the Warp/UnWarp combination you SHOULD
switch to DMS.  Warp/UnWarp are no longer being supported so you will
never see anymore updates.  SDS Software holds the sole copyright
and source to the above programs.  Any version beyond Warp 1.11 and
UnWarp 1.02 are strictly fake and have no advantages.  They are not
authorized and chances are that it is either a trojan horse or just
a filezapped older version.

    With the release of DMS there is NO reason to still be using
Warp/UnWarp.  DMS packs faster and much better and for most modes
unpacks faster than UnWarp.  The compression/decompression routines
have been optimized in 68000 machine language and we are constantly
trying to improve.  Currently our routines outperform every available
compressor.  What follows is a short comparison.

The disk used for compression was a stock, unmodified Workbench 1.3 disk,
to and from drive DF0: on a standard Amiga 2000 , no accelerator boards.
Since Zap does not ignore unused sectors and the file compressors cannot,
the compression was done with the NOZERO option on DMS and Warp and
the -m option on Lhwarp.  There were only 60 free sectors on the Workbench
1.3 disk so the difference is negligible but this was done to get
the most accurate comparisons.

                  Compressed Size   Compression Time    Decompression Time

DMS (cmode 4 NOZERO)   374K             15:05                2:43

DMS (cmode 3 NOZERO)   399K             11:05                1:06

DMS (cmode 2 NOZERO)   522K              6:18                1:13

Warp 1.11 NOZERO       531K             11:20                1:29 (UnWarp)

Lhwarp 1.40 -m         414K             15:21                3:27

Zap 1.41 (mode 9)      441K             > 60 mins.           1:45

PKAZIP*                395K             > 30 mins.            -

LHARC 1.20*            396K             > 30 mins.            -

TurboImploder*         384K             > 30 mins.            -

PowerPacker 3.0*       403K             > 30 mins.            -

* - These programs are file compressers.  To facilitate the comparisons
    a 901120 byte 'image' file of the disk was created and that was
    compressed.

    As you can see, DMS easily outperforms the competition.  CMODE 4
provides the best in compression while CMODE 3 gives the best size/speed
ratio.  The compression routines developed for DMS will be incorporated
into our new FileMasher compresser to be released soon.

    DMS is currently being ported to MS-DOS , Atari ST, and Macintosh
personal computers.