Difference between revisions of "Data Compression"

From CPCWiki - THE Amstrad CPC encyclopedia!
Jump to: navigation, search
(The power of CrossDev)
(The power of CrossDev: added zx7)
 
(4 intermediate revisions by 2 users not shown)
Line 20: Line 20:
 
* [[MegaLZ]]
 
* [[MegaLZ]]
 
* [[Pucrunch]]
 
* [[Pucrunch]]
 +
* [[ZX7]]
  
 
== File compression  ==
 
== File compression  ==
Line 28: Line 29:
 
*[[CrownCruncher|CrownCruncher]] ([[Crown|Crown]])  
 
*[[CrownCruncher|CrownCruncher]] ([[Crown|Crown]])  
 
*[[FlowerCruncher|FlowerCruncher]] ([[Roudoudou|Roudoudou]])  
 
*[[FlowerCruncher|FlowerCruncher]] ([[Roudoudou|Roudoudou]])  
 +
*[[LZ48|LZ48]] ([[Roudoudou|Roudoudou]])
 +
*[[LZ49|LZ49]] ([[Roudoudou|Roudoudou]])
 
*[[SQ23|SQ23]]  
 
*[[SQ23|SQ23]]  
 
*[[Turbocruncher|Turbocruncher]] ([[Elmar Krieger|Elmar Krieger]])  
 
*[[Turbocruncher|Turbocruncher]] ([[Elmar Krieger|Elmar Krieger]])  
Line 35: Line 38:
 
== File decompression  ==
 
== File decompression  ==
  
 +
*[[LZ4|LZ4]] ([[Roudoudou|Roudoudou]])
 
*[[NLarge|NLarge]] ([[FG Brain|FG Brain]])
 
*[[NLarge|NLarge]] ([[FG Brain|FG Brain]])
  
 
==Links==
 
==Links==
[http://en.wikipedia.org/wiki/Data_compression Wikipedia's opinion on the mater...]
+
[http://en.wikipedia.org/wiki/Data_compression Wikipedia's opinion on the matter...]
  
  
 
[[Category:DATA Storage]][[Category:Programming]][[Category:Applications]][[Category:CrossDev]]
 
[[Category:DATA Storage]][[Category:Programming]][[Category:Applications]][[Category:CrossDev]]

Latest revision as of 06:08, 4 May 2017

Wikipedia says :

In computer science and information theory, data compression or source coding is the process of encoding information using fewer bits (or other information-bearing units) than an unencoded representation would use, through use of specific encoding schemes.

So be it.

Compression ? In my CPC ?

More often than you may believe.

The power of CrossDev

It was common to use a 16 bit computer like an Atari ST to get stronger compression. Today it is possible to get various compressors which are running on a PC platform and produce binary files which can be decompressed on Z80 computers.

Xyphoes Fantasy is a noteable example. The data is compressed and it was generated on an Atari ST.

Examples for modern CrossDev compression programs with Z80 decompression routines are

File compression

File decompression

Links

Wikipedia's opinion on the matter...