SFDN Packer

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File Format
Name SFDN Packer
Ontology
Released 1994

SFDN Packer (Shannon-Fano Differential Nybble Packer) is a file compression utility, and associated format, for Atari 8-bit computers. It was developed by Sebastian "Seban" Igielski, in association with something called Slight. It's used mainly for audio and graphics files.

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Identification

Files made by SFDN Packer 1.01 start with ASCII "S101".

Sample files

  • RECOILexamples.zip → {AGA2.HPS, ASSASSIN.INS, CHRISTA.APP, LASKA.PLS, LEZANKA.ILS, NINJA.APP, redrose.aps, ROSE.APP, SHPOON.G9S, SHPOON.SFD}

Software

  • SFDN Packer 1.01: [1], [2]
  • RECOIL - Can decompress the format internally (recoil.ci, look for "SfdnStream").

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