FXPF
From Just Solve the File Format Problem
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(Created page with "{{FormatInfo |formattype=electronic |subcat=Archiving |extensions=special |released=≤1993 }} '''FXPF''' is the signature of what is presumably a Microsoft binary patch file ...") |
Latest revision as of 18:34, 12 February 2024
FXPF is the signature of what is presumably a Microsoft binary patch file format. It was used in some MS-DOS 6.x upgrade ("Step-Up") packages.
[edit] Identifiers
The last character of the original filename extension is replaced by an uncommon character such as "#", "^", or "@".
[edit] Identification
Files begin with ASCII "FXPF", possibly always followed by bytes 0x00 0x00.
[edit] Sample files
- DOS62.ZIP - MS-DOS 6.2 Step-Up
- 622_STEP.ARJ - MS-DOS 6.22 Step-Up
