(C) POL / ALFA RESEARCH
Choose your best compressor.
At home even the walls have to bear
a useful information. We
in the vanguard of progress,
used to save each of its
molecule.
(AN quarter,
"Diary of a Madman")
Test results for me ievestnyh compressors:
1. Introduction.
Table 1. Contestants:
1. COMPRES * (A. S. KOLN, 1992);
2. COMPRES2 (?);
3. COMPR (Baliasov?);
4. COMPRESS (Baliasov, Moscow, 1989);
5. COMPRES. v2.0 (Baliasov?);
6. COCO v1.01 (Mike Studio, St.-Peterburg, 1991);
7. SUPERPACK v2.0 (V. Vasilevsky, V. Kataev, 02.93, Kirov);
8. S $ (Super Screen-a) v1.03 (A. Ermakov, 1993);
9. COMP 303 (Mike Studio, 1992);
10. COMP $ (ASC Screen Crasher, A. Sendetsky, 1991);
11. SCP v3.1 (MIKROPOL, Poland, 1989; SHRSOFT, Rybinsk, 1992);
12. INDEX (Pencraft, 1991);
13. ZYX-comp v4.0 (Sobolev);
14. ZXZIP Fast v1.02s (MI'DI, 1994; M. Kondratyev);
15. B. Packer v3.0 (BOND, 1993);
16. S. COMPR Plus (Moscow, 1989);
17. MS_PACK v1.96 (Microspace, 01.96, Kiev), 128 Kb;
18. LZHG v1.4;
19. LZHG v2.4;
20. Trush v3.862 (A. Thrush, 1992);
21. CC v3.11 (KSA, 01.96);
22. RAM-Pack (MRPACK, DJS SoftWare, 1990; MR SoftWare, 1991);
23. LZ-Comp v1.0 (V. Gamazov, 1994);
24. LZSSPACK v4.5 (LZSSNEW, ASC, Dnepropetrovsk, 1991);
25. LZSSDEPC v1.0 (V. Gamazov, unpacker for the LZ-COMP v1.0.);
26. DECOMPR * (ASKOLN, 1992, decompressor for COMPRES *);
27. DUPAPACK (Dupanov A., 12.92);
28. MPACK v1.2 (AY-Group, 10.95);
29. VD (Visual Decompressor v1.2, Thimoty, 1995);
30. SO (Screen Optimizer v4.2, Ponomarev, Chelyabinsk, 12.94);
31. Animation v3.0 Compressor, Velichutin, Chelyabinsk);
32. DSQ v4.12. (APUS, Dream Makers, 1995);
33. ASO (Amazing Screen Optimizer v0.1, VVG);
34. ZXUNZIP! (MI'DI, 1994, unpacker for ZXZIP v1.02s);
35. RLE-Compressor v1.21 (Dr.Dash, Tula, 1997);
36. PCD (Powerfull Code Decreaser v6.2, KSA, 1996; VEKA, 09.97);
37. PCD (Powerfull Code Decreaser v6.1, KSA, 1996);
38. QSV (Quick Screen Viewer v1.0, ABBA, 1997);
39. HRUM v3.5i (Dmitry Pyankov, Gorno-Altaisk, 09.97);
40. Compressor Code v4.0 (V. Sobolev, ZYX, 1993);
41. RAR v2.0 (IBM PC).
Test conditions:
As the test files used block codes
containing graphics (sprites) information and object code
some kind of program length 26680 bytes (105 sectors) and a
standard Spectrum Screen 6912 bytes - screensaver to electronic
journals from Naberezhnye Chelny - SPECTRUM LAND (do not
confuse it with the same).
Notes:
Decompressor, of course, did not participate in the testing.
If there are several options for compression in table 2
was brought best results.
The length of the decompressor summed with the compressed
block.
The efficiency of a file after extraction has not been
verified.
2. Results.
Interpretation of Table 2 (see below):
In all cases:
<None> - no data available or not tested;
+ Positive result;
- A negative result.
Compression code:
+ Compression can not only display but also any file;
- Not possible.
Species:
The number of selectable modes of compression, or the method
used.
Fix.:
The presence of a fixed start decompressor:
+ A;
- Not available.
Length1:
Length after compression file sl5. C.
Dlina2:
Length after compression file mc. C.
Pak.:
+ Repacking the file is possible a second time and gives an
even greater
compression;
- Has not been verified.
Dec.:
The length of the decompressor, in bytes.
Adv.:
Extension for new file, if it differs from. C.
Table 2. The results of testing various archivers.
Number of compressor Species Fix. Length1 Dlina2 Pak. Dec. Adv.
Table 1 Sia code
1 - 4 - 3538 -
2 - 3885 - -
3 - + 4629 -
4 - 4628 - 31
5 + - 4 628 27 090 1931
6 + 4,790 18,813 have
7 - LZH 3312 - + $
8 - spetseff. 7112 + - +
9 + 4684 18 761 -
1910 - LZSS 3186 - +
11 - 4 - 3538 -
12 - 4601 -
13 + - 4186 12553 -
14 + 3 3612 10524 + - Z
15 + 18 566 4611. Pak
16 (tape version, God, what an antiquity.)
17 + 2, Huffman - 3504 10 780 192
18 + LZH - 3926 13049
19 + LZH - 3932 12815
20 + 6489 10937
21 + - 3828 12499
22 + + 4936 18871
23 + 3551 12493 41 A
24 + - 3843 12776
25 -
26 -
27 (not tested)
28 - 6144 -
29 - 9, spetseff. 3604 - +
30 - May 2881 -
31 - 4597 -
32 + 3367 11162 176
33 - 4858 -
34 -
35 (not tested)
36 + 2 - 3 499 10 737 196 is
37 + 2 - 3 499 11 045 204 is
38 - 2992 - $
39 + 2 - 3 433 10 866 119
40 + 2 - 4 052 12 228
41 + 6 10412 17234 7259
without decompression .... 3153 9975
Notes:
14 and 23 - files can be placed in the archives of the same
name.
8, 29 and 34 - an opportunity to establish the effect when
decompressing.
3. Conclusions.
Use programs ZXZIP Fast (), MS_PACK and TRUSH. They
showed the best results. To compress files on-screen
better take advantage of programs SUPERPACK, DSQ and COMP $.
Other Draw your own conclusions from the data table. More
looking for information in HELP.
P.S. Speccy Alive 4ever!
