Virtual-World-RE/NeoGF
4
0
Fork 0
mirror of https://github.com/Virtual-World-RE/NeoGF.git synced 2024-11-15 09:45:33 +01:00
Code Issues Releases Wiki Activity

Create README.md

Browse Source
This commit is contained in:
tmpz23 2022-04-11 21:12:09 +02:00 committed by GitHub
parent a99eea0a10
commit 5d84d08828
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 36 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
gcmtool/README.md Normal file
View File

@ -0,0 +1,36 @@
# gcmtool.py
Python3 script for unpack/pack/rebuild GCM/iso file format. This tool can rebuild FileStringTable (FST) of GCM and patch boot.bin with a new apploader.img, boot.dol, add/remove/edit folder and files of the game. MIT License.
## User manual
Unpack GCM/iso file **source_gcm.iso** in the default new folder _game_code-DVD_number_. If optional_dest_folder is specified we unpack in _optional_dest_folder_.
```
gcmtool.py --unpack source_gcm.iso optional_dest_folder
```
Pack **source_folder** in the default new GCM/iso file _source_folder.iso_. If optional_dest_file.iso is specified we pack in _optional_dest_file.iso_. If one of the files or system files contains length change we have to use --rebuild-fst command before packing.
```
gcmtool.py --pack source_folder optional_dest_file.iso
```
Rebuild the FST file system of an unpacked GCM/iso and patch boot.bin for a new apploader, dol, and add/remove/edit of folders and files.
```
gcmtool.py --rebuild-fst source_folder
```
Print stats about the GCM/iso file or the unpacked GCM/iso folder. This stats contains informations about full memory mapping sorted by offset (files and system files), get empty spaces informations using optional align -a (default=4).
```
gcmtool.py --stats path -a 4
```
Japanese charset is not handled for now except if you have installed Japanese local.
The original GCM/iso and repack GCM/iso are different most of the time. This is because GCM DVD contains "empty spaces" with data unused (old datas or random datas I don't know). So this datas are useless and loss during unpack.
The sorting of files during FST rebuild is deferent from the original and this is full compatible with the GameCube dol API.
## Extracted file tree
root folder contains all files of the unpacked GCM/iso
sys folder contains GCM system files of the game:
* boot.bin
* bi2.bin
* apploader.img
* boot.dol
* fst.bin