Buzz #12 30 декабря 1997

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Obzorchik SYS - Overview of System Software: Bytamare v2.0, Hrum v3.5, PCD v6.2.

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       ЎЎЎЎ /'''''''''''' \ ЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎЎ

       --- / By Paracels /------ S-Y-S-T-E-M-Z --------
          \ ,,,,,,,,,,,,/

(C) Paracels


   Hello, dear readers. Today I want to introduce
You with a couple-three recently appeared in our system 
programmok. 


               BYTEMARE v2.0 COPYPROTECTION SYSTEM

                     (C), Alexander Korolev


   First sistemka today - a very powerful protection against 
unauthorized copying CDs - BYTEMARE V2.0 COPYPROTECTION SYSTEM, 
written by Alexander Korolev, the city of Samara. 

   BYTEMARE v2.0 will only work on a 128-x machines with 
versions of TR-DOS 5.03/5.04T. 

   Copy protection based on the principle of "floating 
sectors", ie neodnoobrazno read. When you copy a conventional 
Commander or potrekovymi copiers track containing necessary for 
the proper operation of security information will be considered 
incorrect and disc copy will not work. 

   At the time of this writing, the program author, 
unfortunately, not knew about such copyist as McDONALD and 
OMEGA, and therefore, if really want - can be removed from the 
disk, protected BYTEMARE, quite a valid copy. 

   BYTEMARE has a unique opportunity cascading protection
files, ie one program may not be protected once and for all, 
but several times in a row. 

   When you protect files BYTEMARE resident protection will 
always be of different length, which virtually eliminates 
writing anti-BYTEMARE!!! 

   Protection as a whole exceeds the possibilities of all known 
MICROPROTECTOR and can be used in the quality of his 
replacement. Xor ' Key in BYTEMARE much steeper than 
MICROPROTECTOR'e. 

   If you want to defend the program from its backup, then 
either write protect themselves (that is preferable) or Use 
BYTEMARE. Good luck! 


                       HRUM v3.5 (48/128)

                      (C) Dmitry Pyankov

                           Compressor


   Relatively old (January 1997), the compressor, but that
surprisingly, very steep at the moment! Yes, it is the steepest 
since shakes HRUM better than PCD v6.2. And if we talk 
komressii about speed, then there HRUM is a leader. 

   Once it becomes clear that the author of this wonderful and 
convenient in the bend approached it very professionally.


   Now some characteristics:

   √ maximum length of 49,033 b kompressiruemogo file. !

   √ full length of the decompressor 150 used.;

   √ compression speed 1 kb / s (faster than LPC)!!!

   √ decompression speed 33 kb / s!

   √ Ability to work with included IM2 interrupt, but here
There is one condition: the interrupt handler must be
his stack, that is something like this:

                       di

                       ld (old_sp +1), sp

                       ld sp, new_sp

                       push af, bc, de, ...

                       ...

                       pop ..., de, bc, af

             old_sp ld sp, 0

                       ei

                       ret

   And the speed of compression: it is 1.5-12 times higher
than any currently existing compressors.


                          PCD v6.2

                    (C) KSA SOFTWARE 1996

                  Improved by VEKA / CPU 1997

                         Compressor


   PCD v6.2 now occupies second place among the existing 
compressors. He is slightly inferior to HRUM'u the degree of 
compression, but Still zasluzhivet to use it. This was made 
possible thanks to correct glitches that PCD was just stuffed. 

   In version 6.2 the probability of freezes when decompressing 
(due to zoom unpacked part of the block on all unopened) has 
decreased significantly. 

   Compression speed leaves much to be desired, but the 
correction smooths out the glitches in this deficiency.


   In the end, I would like to thank VEK'u for his work, 
through which everyone, without fear can enjoy a fairly good 
compressor. 

P.S. Speaking of copy protection: we now have a

     MEGAPROTECTOR, which is written in help'e, not copies
     Xia McDONALD'om v2.0/2.7, a well OMEGA Copy v1.30. But in 
a system      Lou obscure reasons we protect these files after 
protect'om 

     completely otkazyvyutsya run. Climb to secure data
     nym protect'om prog, I found xor'ku who does not

     rasksorivaet! We certainly understand that this is just a 
beta 

     release, but still could do so after prog

     protection even worked ...


     And another thing: saying that at this point is self HRUM
     mym fast compressor, I have not seen the Turbo-LZ, so that

     quite possible that the Turbo-LZ by SIMM / PhF will be 
faster than 

     HRUM. We can only wait for us of this program.


         Overview sistemok to you by Alexander (Paracels).