ROM Hack How to make patches?

[LGameTales]

I've been asking around, How do you make a patch for NDS ROMS?

What program? I've tried both Hex Editor and Lunar IPS, but neither of them work for me. Help?

 

[basher11]

try Xdelta GUI.

 

[LGameTales]

try Xdelta GUI.

Hm.. Ill try it out.

Edit:

Nah, no tutorial on how to use it, and I've already taken hours trying to figure one of these programs out myself. The only 2 programs there don't do anything for me. Thx anyway.

 

[OzanOs]

men for xdelta you just have to select the clean rom first and the edited one as second and let the prog create a patch..

 

[LGameTales]

men for xdelta you just have to select the clean rom first and the edited one as second and let the prog create a patch..

Edited one?

I don't have an edited one, thats what my question was. How do you make it?

 

[StorMyu]

wow wow, what kind of "patch" you want to do....?

 

[Slashmolder]

Learn DS assembly. Disassemble the nds file. Find the problematic code and byte patch it.

 

[Rydian]

You still haven't done step 1 and you're worrying about step 5.

What are you wanting to patch, how, why?

Let us see the big picture.

 

[FAST6191]

I can not speak for xdelta gui but I can speak for xdelta- it is my chosen patching method unless I have something better. Go command line if you have to. I am still rocking a v1. something version (it has moved on somewhat since this version but

"xdelta.exe: usage: xdelta.exe COMMAND [OPTIONS] [ARG1 ...]
xdelta.exe: COMMAND is one of:
xdelta.exe: delta Produce a delta from ARG1 to ARG2 producing ARG3
xdelta.exe: info List details about delta ARG1
xdelta.exe: patch Apply patch ARG1 using file ARG2 producing ARG3"

Assuming however the command line stuff has not changed in this regard your command will look something like
"xdelta delta originalrom.nds hackedrom.nds patchfile.file"

Anyhow IPS rarely works on DS roms for two main reasons- 1 is that it is limited to 16 megs in size* and 2 is that it is a dumb method and any shift in the data will be seen as a change; chances are you used some tool to rebuild the entire rom which means the entire rom has effectively changed.

*technically it is 16 minus the end of file (EOF in ASCII) and some implementations (IPS is not exactly a standard) have a window option so you can patch a 16 meg window at X bytes in but not many patchers implement such an extension (again IPS has no real spec).

Some threads you might want to read:

http://gbatemp.net/index.php?showtopic=998...p;#entry1332416
http://gbatemp.net/index.php?showtopic=127...p;#entry1683892

 

[Rydian]

Go command line if you have to. I am still rocking a v1. something version

Syntax for the current version is as follows.

Make patch:
xdelta.exe -e -s old_file new_file delta_patch

Apply patch:
xdelta.exe -d -s old_file delta_patch patched_file

 

[LGameTales]

You still haven't done step 1 and you're worrying about step 5.

What are you wanting to patch, how, why?

Let us see the big picture.

Ok... Whats step 1?

Im trying to make a translation patch for an NDS game (open up the ROM and change the text in some way). Not literally as easy as opening + retyping something.

QUOTE(Slashmolder @ Apr 3 2010, 01:24 PM) Learn DS assembly. Disassemble the nds file. Find the problematic code and byte patch it.

If I knew how I would've tried it.

 

[ShinRyouma]

Im trying to make a translation patch for an NDS game (open up the ROM and change the text in some way). Not literally as easy as opening + retyping something.

To translate NDS games you can use Hex Editor, I use CrytalTile2 to translate NDS games. Of course it's not easy to translate games, but if you're a programmer it would be very helpful.
To make a patch I always use xdelta, very easy to use.

 

[StorMyu]

Im trying to make a translation patch for an NDS game (open up the ROM and change the text in some way). Not literally as easy as opening + retyping something.

To translate NDS games you can use Hex Editor, I use CrytalTile2 to translate NDS games. Of course it's not easy to translate games, but if you're a programmer it would be very helpful.
To make a patch I always use xdelta, very easy to use.

Yes but the text function of CT2 is horrible....