C64.svobject

  © 1994 by Andreas R. Kleinert.

  FREEWARE. All rights reserved.

  Version      : 2.4
  Release Date : 27.03.1994


  Description
  ~~~~~~~~~~~
  C64.svobject is an external Library-Module for the superview.library V2+.

  It contains SVDriver-Support for the superview.library V3+, and
  needs any SVDriver with ChunkyPixel-Support.

  It supports reading of C64 Graphics Files (Koala, Doodle).
  In detail these are :

  Reading :

   Format   Dimensions Colors  Displayed as   FileSize	Flexibility

   Doodle   320x200    2/16    320x200	       9218	(9200 < fs < 9230)
   Koala    160x200    4/16    320x200	      10003	(fs == 10003)


  Writing :

   (not supported yet)


  Author
  ~~~~~~
  Andreas R. Kleinert
  Grube Hohe Grethe 23
  D-57074 Siegen
  Germany


  History
  ~~~~~~~
  V2.4 (27.03.1994) :

   - removed internal SVDriver-Replacement, so that we now are really
     dependent on external SVDrivers in libs:svdrivers.
     This saves about 1600 Bytes diskspace and reduces redundancy.
   - replaced SAS/C's sprintf()-routine with own, RawDoFmt()-based one.
     This saves again about 1800 Bytes.
   - now using Utility-Library for integer operations (activated
     SAS/C's UTILLIB option) : this increases 68000-codesize a little
     bit, but increases speed on 68020+ systems
     (should also decrease codesize, but does not ...)
   - reconstructed revision notes for V2.2 and V2.3, which were
     mixed together in V2.3


  V2.3 (25.03.1994) :

   - slightly improved internal BitMap-to-BitMap routine
   - removed some dead code and variables in decoding routine


  V2.2 (20.03.1994) :

   - slightly changed recognition routine
   - and more


  V2.1 (17.03.1994) :

   - first version with Koala and Doodle support


  Credits
  ~~~~~~~
  This program was inspired by several programs, which allow reading
  and displaying of C64 graphics on the Amiga.
  For getting information about the C64 Koala and Doodle formats I took
  a look into the source code of ComView 1.0 by Paul Grebenc, which can
  be found as "C64View" on the SaarAG-Disk #523.

  I did not include and use the Source Code as such, but I really learnt
  a much out of it. The algorithms are perhaps nearly the same,
  but because I do not use file-to-screen decoding my code is perhaps
  some 100% faster (different structure, many optimizazions).

  I also took a look into the specifications found under "literature".


  Literature
  ~~~~~~~~~~
  [1] "Das Aufsteigerbuch" (C64 -> Amiga), Michael Strauch, Alexander
       Stellmach, © 1987 by DATA BECKER GmbH, Düsseldorf.
       ISBN 3-89011-134-4
  [2] "Formats.doc" of the ShowVIC distribution on SaarAG-Disk #616.
      ShowVIC is (C)opyright 1993 by Matt Francis.


  Copyrights
  ~~~~~~~~~~
  Some of the mentioned names or products above may be copyrighted by
  companies or trademarks of companies.