Dec 312016

Roudoudou worked on a compressor / decompressor which uses the LZ48 / LZ49 compression algorithm on the Amstrad CPC and released his work in the CPCWiki forums. The compressor is inspired by the LZ4 compression algorithm of Yann Collet and the modifications fits well to the Z80 CPU of the Amstrad CPC. The advantage of this compression method is, that the decompression code is very small (83 bytes) and very fast. The disadvatage is that there are other compressors which feature a better compression ratio, but require more memory and more time for decompression as well.
You can get more information about the modified algorithm and download the assembly source from the CPCWiki forums. You can also find a version for SDCC / CPCtelera and binary files for Windows there.

LZ48/49 (de)compressor
LZ48/49 (de)compressor
16.5 KiB
Aug 162010

TFM released a new version of his video compression tool Filmemacher (german for ‘Moviemaker’). With Filmemacher you can compress 17kb screen and display them with up to 50fps. You can download the actual version of the program from


  • Application now updated and adapted for FutureOS system .8 or higher
  • Memory-Management is enhanced, up to 512 KB E-RAM will be fully used
  • Debugging (has still to be enhanced in the next version)
  • Interface for German, English and French language
  • Application needs a CPC with at least 208 KB RAM.
  • The generated CoData movie can now compress 1364 single pictures (511 in last version)
  • Application runs best on Class 4 CPC or higher.


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