Xenogears file system results

[Akari]

Okey. I've got some results here. After week working with raw data and iso9660 specification I can say for sure, there is no usual directory/files of any kind. All path tables are has only record about root directory, and file structure itself doesn't contain info other than two files and link to "." and ".."

The SLUS_006.64 and SYSTEM.CNF are pleced in the middle of the disk (strange???). So I've made two more records in the file structure - F_PART.RAW and L_PART.RAW. They uncover raw date before and after two initial files. The hexes are folowing

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Offset      0  1  2  3  4  5  6  7   8  9  A  B  C  D  E  F0000B000   30 00 16 00 00 00 00 00  00 16 00 08 00 00 00 000000B010   08 00 62 08 1B 11 1E 00  00 02 00 00 01 00 00 010000B020   01 00 00 00 00 00 8D 55  58 41 00 00 00 00 00 000000B030   30 00 16 00 00 00 00 00  00 16 00 08 00 00 00 000000B040   08 00 62 08 1B 11 1E 00  00 02 00 00 01 00 00 010000B050   01 01 00 00 00 00 8D 55  58 41 00 00 00 00 00 000000B060   3C 00 3E A8 01 00 00 01  A8 3E 00 A0 04 00 00 040000B070   A0 00 62 08 1B 11 1E 00  00 00 00 00 01 00 00 010000B080   0D 53 4C 55 53 5F 30 30  36 2E 36 34 3B 31 00 000000B090   00 00 0D 55 58 41 00 00  00 00 00 00 3C 00 3D A80000B0A0   01 00 00 01 A8 3D 43 00  00 00 00 00 00 43 62 080000B0B0   1B 11 1E 00 00 00 00 00  01 00 00 01 0C 53 59 530000B0C0   54 45 4D 2E 43 4E 46 3B  31 00 00 00 00 00 0D 550000B0D0   58 41 00 00 00 00 00 00  3A 00 18 00 00 00 00 000000B0E0   00 18 00 28 41 0D 0D 41  28 00 62 08 1B 11 1E 000000B0F0   00 00 00 00 01 00 00 01  0C 46 5F 50 41 52 54 2E0000B100   52 41 57 3B 31 00 00 00  00 0D 55 58 41 00 00 000000B110   00 00 3A 00 D2 A8 01 00  00 01 A8 D2 00 00 07 180000B120   18 07 00 00 62 08 1B 11  1E 00 00 00 00 00 01 000000B130   00 01 0C 4C 5F 50 41 52  54 2E 52 41 57 3B 31 000000B140   00 00 00 0D 55 58 41 00  00 00 00 00 00 00 00 000000B150   00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 000000B160   00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00

This must be placed in sector 22 instead of original data (not in raw mode). I used WinHex for it. (PLEASE NOTE THAT THIS IS FOR DISK 1, disk 2 may have other file pointers)

After that point a confront some trouble. First of all I used Clone CD to made image and then edit it. But when I wrote the disk It seems to be the copy of original, without any changes. I tried once more time, but first 23 sectors became blank all of the sudden.

Next I tried to use UltraISO. I made ISO image edit hexes in it and burn them back. Windows was happy, and I too - all files appear and they was exactly the same as raw data of the original, BUT!! - the PS2 and some emulators refused to play that disk. Though I get files to analize, next step is to allocate the other data and perhaps fix incompartible with PSOne. I start from the video i believe. Don't anyone knows where I can get description of PSOne movie formats?

 

[halkun]

My tech document shows what the movie data should be like when placed into the DMA stream to the MDEC.

The link to my tech doc is in the sticky at the very top if the forum..

The upshot is it's a buch of mpeg compressed 8x8 squares that are fed into the MDEC.

 

[Akari]

Okey, thanks, halkun. Your documentation and Gears helped a bit.
I managed to find standart .str and .tim files. Futher on I found .smd, .sec and .wd files like in Final Fantasy Tactics. They are music files. Right now I try to interpritate files with "30 00 00 00" file type identificator.

Here are all info that I get
http://server.titansoft.ru/akari/xeno-gears.txt

 

[Cyberman]

It makes perfect sense though for them to store the STR files the way they did.  The playstation MDEC playing system doesn't care about the ISO9660 file system, and more importantly the MDEC sectors are Mode 2 2304 byte sectors. It might have actually been simpler for them to do it that way then to do the same thing they did with FF8 or FF7.  Since the file's aren't really part of the ISO9660 standard.  A different DEV team made xenogears anyhow.

Nice information, I wonder why they include information for the end of the game in disc one? Have you examined disc 2 yet?

Cyb

 

[Akari]

Year, i searched a bit. The most data are the same as it the Disk 1, exept video of course. And it seems like some other data absent too. I'll check more intently soon.

 

[Akari]

I finished check the both disk. They seems identical in every way, except video files
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DISK 1000041  str0001.str   capsule launch000825  str0002.str   Grahf, Id and Fei's father004705  str0003.str   Grahf, Id and Fei's father 2008425  str0004.str   Weltall transformation011055  str0005.str   Before Lahan destruction016743  str0006.str   Lahan destruction022911  str0007.str   Meet with Elly025941  str0008.str   Desert trip036637  str0009.str   You are coward045581  str0010.str   Grahf appearing050893  str0011.str   Solaris destroy052165  str0012.str   Solaris destroy 2053149  str0013.str   Solaris destroy 3054133  str0014.str   Opening098917  str0015.str   Yagdrassil launch104697  str0016.str   Playing with mom106105  str0017.str   Squaresoft logoDISK 2000041  str0018.str   ending, with credits067433  str0019.str   destroying Melkaba 1072505  str0020.str   destroying Melkaba 2074097  str0021.str   Deus appering079569  str0022.str   after final battle117697  str0023.str   Deus destruction120313  str0024.str   music video (Two Wings)146867  str0017.str   Squaresoft logo149313  str0025.str   Elly's sacrifice158377  str0026.str   Fei and Elly160745  str0027.str   From Elly to Miang166297  str0028.str   Fei kills everyone

and block with 3d locations and events
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DISK 1120750 - 231361 - great amount of data (more than 100mb) as I figure first file is data descriptor. the second byte is always 12, the first one 01 or 00after this file are lies one or more files with real data.DISK 2185064 - 221427 - much smaller amount of data. It seems that almost all scenes from the first disk was cut as well as many locations (It make sense)

As well I found that 03 00 00 00 14 00 00 00 file identificator in real some sort of archive. The first 4 bytes are number of chunk, the second one are first chunk offset. Next 4 bytes are the second chunk offset and so...
There are few type of data that are stored in this archives (or file packes) and in seems determinated by number of chunks. For example 08 00 00 00 - are pack of TIM graphic.

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120579 8800 ????.tim   tim pack (8 tim) contains compass staff, dialog border and so...

Others are still needed to be decrypted. I met 02, 03, 04 and 05 packes (08 was only once)


Right now I try to understand file that I believe is 3d location of Fei's room in Lahan, where game started. (sector 122139 and 122140)

PS: xeno-gears.txt was apdated a bit.