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NuFX - Just Solve the File Format Problem

NuFX

From Just Solve the File Format Problem
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File Format
Name NuFX
Ontology
Extension(s) .shk, .sdk, .bxy
PRONOM fmt/850
Wikidata ID Q25305144, Q29167432, Q60558754
Released 1989

NuFX (NuFile Exchange; also known as ShrinkIt format) is an archiving format that was used for the Apple II series late in its history. It was created by Andy Nicholas as a student project at Moravian College in Bethlehem, Pennsylvania. The ShrinkIt program (also created by Nicholas) supports it. It usually uses LZW compression.

The usual filename extension is .shk. When NuFX-format data is placed into Binary II format for transfer, extension .bxy is used.

NuFX also supports storing disk images. Files using this feature typically have extension .sdk.

Contents

Format details

Two slightly different CRC algorithms are used, by different parts of the format: CRC-16/XMODEM and CRC-16/IBM-3740.

Identification

NuFX files start with bytes 4e f5 46 e9 6c e5. This is ASCII "NuFile", but with the high bit set on alternate bytes.

Specifications

Software

Sample files

Links

Personal tools
Namespaces

Variants
Actions
Navigation
Toolbox

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