Author Topic: 1995 - Columbia v1.2 file compressor  (Read 209 times)

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Offline ComSoft6128

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1995 - Columbia v1.2 file compressor
« on: 11:32, 22 June 20 »
Excellent file utility from the Robot PD library.

Like AnsiTerm and DosCopy as soon as this was released the CPM equivalents were made obsolete.

See this post for an equivalent CPM utilty:
https://www.cpcwiki.eu/forum/applications/cpm-nulu-1-5-for-the-cpc-and-pcw-computers/msg188731/#msg188731



Using Columbia one 10K text file is compressed to 5K and, using the "multi-record" option,  twenty one various
text, BASIC and binary files (totaling 108K) are shown compressed to one 60K "library" file.


https://www.youtube.com/watch?v=CcDfZ4YuO4A

Robot PD links:

http://www.cpcwiki.eu/index.php/Robot_PD

https://www.cpcwiki.eu/index.php/Columbia

https://cpcrulez.fr/auteur-richard_fairhurst.htm

https://www.cpc-power.com/index.php?page=staff&stafftype=1&lenom=ChaRleyTroniC


Other links:

https://en.wikipedia.org/wiki/Lempel%E2%80%93Ziv%E2%80%93Welch

https://en.wikipedia.org/wiki/LBR_(file_format)

https://techtinkering.com/articles/compression-and-archiving-on-cpm/

https://en.wikipedia.org/wiki/Zip_(file_format)


Not emulated - original hardware and software

Please note the aspect ratio for this YouTube video is 16:9 but the CPC monitor
has an aspect ratio of 4:3 so you may wish to adjust your viewing device accordingly.
« Last Edit: 10:30, 24 June 20 by ComSoft6128 »