Dolwin 0.10 Games Patching Guide

[Knuckles]

For anyone that knows how to use the debugger and wants to make patches for some games here's a little guide I wrote for some testers:




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First what you need is a hex editor

Take XVI32 if you don't have any(free):

http://www.chmaas.handshake.de/delph...vi32/xvi32.htm



Ok, first of all , patch files are used to add/modify instructions in the emu memory for a specific game. It will be loaded at the same time the map is loaded.

Now, get your game ID and make a new file with the Id of your game, followed by .patch in your /data/ folder. After that, open your hex editor and go open your patch file you just created.

Now how it works :

XX XX XX XX    XX XX       XX XX     XX XX XX XX           XX XX XX XX
ADDRESS         FREEZE      SIZE      NOP INSTRUCTION     DUMMY DATA

address: CPU effective address to apply patch there
freeze: Apply patch after every VI frame, if 1
size: size of data to write at address (in bytes)
data: patch data (size : 1, 2, 4 or 8 bytes)
data bytes are started right from this offset,
not matter what size of data is applied.
unused bytes of data can be used as small comment


60 00 00 00 is the nop instruction, no need to put it in with the ASCII format, the instruction number is enough.If you need to get the number of other opcodes, just look in the debugger, it's the number in
green next to the adress.



example: put 'nop' opcode at the adress 0x8000B494

80 00 B4 94       00 00        00 04      60 00 00 00       00 00 00 00
address           freeze        size        nop opcode       dummy data

it makes : 80 00 B4 94 00 00 00 04 60 00 00 00 00 00 00 00
then you can enter another adress right after, no need to put anything between.


-Doc made by Knuckles for the GameCube emulator Dolwin by org

[Nifty]

Will it be possible to use patches that other people made, or is it different on every computer?
Because I don't think I fully understand how to make a patch

[_Chrono_]

Will it be possible to use patches that other people made, or is it different on every computer?
Because I don't think I fully understand how to make a patch

youll be able to use patches from others, as long as its the same game from the same region. a pack is currently being made by the team. a release is due tonight.

[DarthDazDC]

would this also be able to make certain games in Dolphin run as well?

[Knuckles]

patches are game specific, it's using the game ID (like GM4P41), if you have a game that got that ID, you can use the patch for this game.

[Dysprosium]

would this also be able to make certain games in Dolphin run as well?

No, because Dolphin does not use a patch system. Remember, Dolwin has a lot more options to toy with then Dolphin. ;P

[DarthDazDC]

Oh, whoops! I thought this meant patching the games using a patching program instead of using the emulator.

[kzez1986]

How can I get ID of the game that I want to patch?

[NintenDS]

Where you rom list is, in the middle is the GAME ID, I think...

If I am incorrect, snapshot will be heading this way.

[zaba_3]

Where you rom list is, in the middle is the GAME ID, I think...

If I am incorrect, snapshot will be heading this way.

stop reviving old threads