STX

File Format
Name	STX
Ontology	Electronic File Formats Disk Image Formats STX
Extension(s)	.stx

Pasti (or STX) is a floppy disk image format for preserving copy-protected Atari ST disks. The software can also archive regular Atari ST disks, but those are more commonly found in ST disk image or MSA format.

Identification

STX files begin with bytes 0x52 0x53 0x59 0x00 ("RSY").

Specifications

• Pasti File Documentation, by DrCoolZic
• STX file format description

Software

• Image creation tool for Atari ST and Windows DLL to decode images
• AIR (Atari Image File Reader)

Sample files

• Union Demo as a Pasti image
• Atarimania: ST/TT/Falcon Games section - Many of the items are in Pasti format.