Yggdra Union: We'll Never Fight Alone (PlayStation Portable)/ROM map

The following article is a ROM map for Yggdra Union: We'll Never Fight Alone (PlayStation Portable).

General

This game uses CRIWARE. It is unknown if .afs files are CRIWARE archives.

The main archive file is data0.afs. The full path is PSP_GAME\USRDIR\Data\data0.afs.

All offsets below are absolute (i.e., relative to the start of the file) unless otherwise noted.

AFS File Format (main game data archives)

This fork of Puyo Tools will extract the files using the format INDEX-FILENAME (where INDEX is the zero-padded index of the file) when the "Prepend" option is checked.

Header

Offset	What
0x0	IDSTRING = "AFS\x00" (hex: 41 46 53 00)
0x4	Number of files

File offsets table

Offset	What
Entry size	0x8. Offsets below are offsets within each entry.
0x0	Offset
0x4	File size

After this is 0x8 bytes with the location and size of the file information table.

Offset	What
0x0	Position of file information table
0x4	Size of file information table

File information table

Offset	What
Entry size	0x30. Offsets below are offsets within each entry.
0x0	File name and extension padded with nulls. Some files don't have a name.
0x20	File information. The function of the values is unknown.

FCT (archive file)

Example files:

• data.afs/0000-ExiData.zlb (after decompressing)
• data.afs/0524-B

Header

Offset	What
0x0	FCT\x00
0x4	Number of files
0x8	File offsets table offset
0xC	0

File offsets table

Offset	What
Entry size	0x8. Offsets below are offsets within each entry.
0x0	Offset
0x4	File size