FSF

File Format
Name	FSF
Ontology	Electronic File Formats Document FSF
Extension(s)	.ini
Released	2023

FSF or File Structure Format is a format introduced by Xelitan Hex Editor. FSF files can be used as templates to interpret various binary files. Files are not compressed and use INI formatting.

Sample file

Below is an FSF template for TGA images:

[FSFormat]
IdLen=UInt8
ColorMap=UInt8
ImageType=UInt8
FirstIndex=UInt16
ColorCount=UInt16
ColorBits=UInt8
LeftCornerX=UInt16
LeftCornerY=UInt16
Width=UInt16
Height=UInt16
BytesPerPixel=UInt8
Flags=UInt8

Data types

UInt8 - unsigned integer, 8 bit
Int8 - signed integer, 8 bit
UInt16 - unsigned integer, 16 bit
MInt16 - signed integer, 16 bit, Motorola byte order
Str(4) - ASCII string, 4 bytes long
UInt32|hex - unsigned integer, 32 bit, display in hex
UInt16|DosTime - unsigned integer, 16 bit, interpret as Dos Time
NulStr - ASCII string, terminated by null byte (0x00)

Identification

FSF files begin with ASCII text [FSFormat].

Software

• Xelitan Hex Editor

Sample files

• Xelitan Hex Editor