Difference between revisions of "CDF"

Revision as of 02:57, 27 July 2016

Used in the following games:

Parasite Eve 2 (PSX)

Note: Formats are aligned to sectors. Any change to files may require full rebuild of whole image. This is typical of PS1 games.

Disk 1 (SLUS-01042)
LBA	Name	Description
0000023	SYSTEM.CNF	PS specific
0000024	PE_DISK.01	Unknown if used (watermark/signature?)
0000025	SLUS_010.42	Program
0000204	INIT.BS	"Published by..." image.
0000210	STAGE0.HED	Header? Possibly some LBA locations
0000214	STAGE0.CDF	Data archive?
0030255	STAGE1.CDF	Data archive. Has soundless STR
0075564	STAGE2.CDF	Data archive Has soundless STR
0100127	STAGE3.CDF	Data archive
0117576	INTER0.STR	All FMV with sound.
0225526	DUMMY.DMY	Dummy file that is actually a video not related to the game.

There may be a pattern for how files are stored and accessed. At the start of each sector, after the CD-XA header, if the sector is the start of a new file, there will be 16-bytes in front of it first. First 4-bytes with a random number. Then a single byte which represents how many sectors this file will occupy. The rest is zeroed out. With this, I was able to write a program that would go sector-by-sector looking for this header than matched. I was able to extract 1,049 background images in full.

File Formats
Value	Temp
05FF0008	BS Format (Backgrounds)
07FF0008	Unknown
02010008	Unknown
01010008	Unknown
06010008	Unknown

@@ Line 50: / Line 50: @@
 | 06010008 || Unknown
 |}
-May have figured out the pre-file header stuff that appears before the *.BS files. Not sure what the 05FF0008 part is yet but the number after that, that single byte, may be a number used to tell how many sectors this file uses. This should fix my auto extractor from having to guess the length of the data.

Difference between revisions of "CDF"

Revision as of 02:57, 27 July 2016

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