PSPFS_V1

PSPFS_V1 (acronym for 'Playstation Portable File System Version 1'?) is used for the two top level archives DATA.DAT and SUBDATA.DAT and contains a variety of different files, like Textures (.TX2), Sounds (.OGG), Maps (.MPP/.MDP) and other types of archives.

Even though the names of the files are stored, the order of most files is imported, as the game doesn't seem to search a file by it's name, but rather by it's position in the archive. Therefor padding is used ('DUMMY.DAT'), so on deletion of a file the file order is not destoyed.

Most sound files (.OGG) can be moved out the archive and the game will still find them.

File structure

Type	Size	Description
String	8 byte	Magic number, always 'PSPFS_V1'
uInt	4 byte	Number of files
Unknown	4 byte	always zero, it could be that the 'Number of files' is a long

• Next is a mapping table wich contains inforamtion about each file:
  • Size: Number of files * 52 bytes

Type	Size	Description
String	40 byte	always upper case, you will need to remove empty spaces
uInt	4 byte	Decompressed file size, if 0 file is uncompressed
uInt	4 byte	File size
uInt	4 byte	Pointer to file

• The remaining data contains the actual files