                                CDDSCAN ver. 1.0

   The program CDDSCAN, for accelerated scanning CD-ROM, is distributed on
   principle ShareWare. All rights on program reserved Andrey Romanov and
   Aleksey Fedykin (C).

0. For distributors: If you include this programs in CD-ROMs, please,
   send two CD-ROM by address: Russia 424033 post office box 140.

   To use program, it is necessary to be registered as follows:
1. To send money in sizes equivalent 12$ inside of Russia - 24$ for its(her)
   limits, to the address: Russia, 424033 post office box 140 Aleksey Fedykin.
   Cheques - The Bank of New York, CityCorp, American Express, Thomas Cook,
   Visa are available.

2. To send the following information: Name, address, given about payment on
   above-stated address or netmail FIDO 2:5052/4.33 to Aleksey Fedykin or
   internet naum@beard.relinfo.mari.su.
   Registered to users is granted the support.



   The program CDDSCAN is intended for scanning CD-drive on trouble  sectors
of disk. And doubtful quality, was written on time expansions
of China disks, which requires the check. The some is stipulated of gradation
of speed of scanning, that it is convenient if necessary of fast check of disk,
minimum time of 5-6 mines. In version PRO the time is reduced in two times
and add other features (Call after registration, special price.).
Moreover are present additional options of set-up.
   Program, as, includes the tests, testing characteristics CD-drives:
- time of moving (access) head to disk (Data Access Time);
- average speed of transmission of data (Data Transfer Rate);
- speed of transmission given in dependence on size, transmitted block,
  and put on schedule. On schedule is possible to be judged about
  efficiency of work internal cache CD-drive, algorithm of cache, quality
  of gear. F1 - help in graph mode. Ctrl-Break, Esc - interrupt, exit.
  Should opportunity preserve the results of testing ( including schedule ) in
data base, file - CDD.LST, and, if you have two files in this formats, them it
is possible append the friend to friend, for example by command COPY. To
user is enabled to fill in one field in data base, reflecting name
CD-drive, size to 31 symbols. The examples:

  Sony 55 E ( iDX-33 ISA-16 Mhz ) - CDD Sony 55 E is established(installed) on
                                         computer with proc. Intel 486 DX-33
                                         the frequency on bus ISA - 16 Mhz.
  Sony 55 E ( 386 DX-40 ISA-8 Mhz ) - with proc. 386 DX-40, frequency on bus
                                         ISA - 8 Mhz.
  Sony 55 E ( AmdDX2-80 VLB ) -  With proc. Amd 486 DX2-80,
                                         The controller VLB is applied.

If you use ISA IDE or specific ISA the controller, would be necessary
that, if it is possible, on bus ISA the frequency was 16 Mhz, for uniformity.
If the card is present two-port IDE VLB, for more effective work CDD it is
wonderful attach this CDD on separate port.

Requirement to environment: DOS; It is necessary to have not less 520 Kb.
free base memory; the driver mscdex.exe; the ABSENCE smartdrv etc. programs
for cacheable; the qualitative disk, capacity not less than 614400 kilobytes.

The description of menu commands of program is below adduced:

Statistics. - this item give the information on CD:
===========
General(common) information on CD
---------------------------------
Summary size of files on CD
---------------------------
Create the file of contents CD - the file is created contents.lst
---------------------------------

Testing.
=============
Speed of CD-drive        - speed of transmission of data.
------------------
Efficiency of cache-memory - is built the schedule of dependence of speed of
--------------------------   transmission data given from size, on which it is
                             possible To judge about size internal cache, cache
                             algorithm, Quality of work of disc drive.

Total testing for data base          - first two items join, and
---------------------------            results are recorded in data base.
Table of characteristics CD-drive    - is caused the textual part of data base.
---------------------------------
Schedule of characteristics CD-drive - is caused the graphic part of data base.
------------------------------------   (F1 - help)

Scanning.
=============
Scanning CD-drive                   - CD-ROM  is scanned on availability error.
-----------------
Table of error sectors                 - call of table, formed after scanning.
----------------------
Table of files containing error sector -table of references on files, containing
--------------------------------------  error sector.

Setup
=====

Number CD-drive
---------------
 It is here possible to choose with which by disc drive to work, if them in
 system the some.

Efficiency of scanning
----------------------
 The percent scanning data given in block is set:
                               Maximal - 100 %
                               Sufficient - 70 %
                               Average -        50 %
                               Moderate -       30 %
                               Low -            The 10 % At reductions of
 percent - is increased the speed of scanning of disk, but probability of
 detection error of sites decreases ( as the practice in some cases -
 slightly ) shows. It is especially convenient, if it is necessary fast
 scan the disk on availability error sectors.

Size of block of scanning
-------------------------
 This option has the following gradation:
                               Large ( size of block of 100 sectors )
                               Average ( size of block of 50 sectors )
                               Small ( size of block of 25 sectors ) As is
 influenced the by speed of scanning.

Reaction on errors of scanning
------------------------------
 The following parameters this:
                               Instant - at detection error sector,
                                            Whole block is marked as error.
                               Scanning of all sectors in blocks
                                          - at detection error sector,
                                            Unitary scan all sectors
                                            In block.
 Further the parameters go, at installation of which scanning from 2-th
 approachs, 4-th, 6-th and 15-th happens, accordingly.

Search of files after scanning [.]
-----------------------------------
 Option can be included - [+] and is switched off [-]. At included option,
 the search of files, containing error sectors and record happens their
 names in files files.lst

Termination (dicontinuance) of scanning
---------------------------------------
 Option can accept the significances from 0 ( not to terminate the scanning ),
 to 63, and established the number, correspond(meet) quantity errors, after
 detection of which the scanning ceases.

Quality graph of schedule of cache-memory
-----------------------------------------
 The following items are present:
                               High - is done(made) four test cache efficiency.
                               Average - -\\- three -\
                               Moderate -\\- two -\
                               Low -\\- one -\

  That quality graph influences in return proportion on speed.

Thank you. 






