junior199107 / game-patches

Game patches for the Xenia emulator

Xenia Canary Game Patches

This repository contains game patches for Xenia Canary.

Installing/Updating

1. Download the zip file.
2. Open Xenia Canary.
3. Click Open > Show content directory...
4. Go up one folder.
5. Delete patches folder if present.
6. Open game-patches.zip and extract patches to the directory that contains content.
7. Continue to enabling patches.

Enabling patches

apply_patches must be set to true in the Xenia Canary config!

To enable patches, open the .patch.toml file that corresponds to your game in a text editor (Notepad, VSCode, VSCodium, Notepad++, etc.), and change is_enabled from false to true.

Note about aspect ratio patches

present_letterbox must be changed from true to false!

These patches do not increase resolution!

While most aspect ratio patches are 21:9 (3440/1440), they can be changed to other aspect ratios as well;

1. Divide your monitor's resolution width by height (i.e. 3440/1440)
2. Convert the result to hex.
3. Change the value to 0x######## replacing ######## with the hex value.

Note about framerate patches

Framerates higher than 60 FPS require vsync to be changed from true to false in the Xenia Canary config.

Troubleshooting

If the above sections didn't help, you can try the following:

1. Make sure you followed Enabling patches.

2. Try deleting all of your patches and updating them.

3. Try commenting out the hash of the patch like so:

   # Add # before hash
   hash = "################"
   # like this
   #hash = "################"

   This isn't guaranteed to work, and may cause crashes.
   Hashes are used to verify the correct version of a game is being patched, and this bypasses it.

   If the game has multiple modules you will need to get the hash(es)

---

Setting up Cheat Engine

• Memory Breakpoints can be set in Cheat Engine or MSVC with emit_source_annotations = true. This will give annotations in disassembly.
• Cheat Engine 7.2+ includes Big Endian types, but they must be enabled;
  • Click Edit > Options > Extra Custom Types and check all of them.
• Go to Scan Settings and enable MEM_MAPPED.
• Change 'Memory Scan Options' to:

  	All
  Start	100000000
  Stop	200000000

  • This may change depending on the programs you have running.
• Once you find a value you can attach Cheat Engine's debugger to see what reads/writes to that address.
  This will show an xex address when a breakpoint is hit, although there is currently no way to set a breakpoint on execution within the Xenia Debugger.

Creating a patch

Prerequisites

• Cheat Engine
  • See setting up Cheat Engine
• Ghidra
  • XEX Loader
• IDA Pro
  • IDA 7 XEX Loader
  • IDA 6 XEX Loader
• Text editors:
  • Visual Studio Code
  • VSCodium
  • Notepad++
• Recommended but optional:
  • ESLint TOML plugin
    • See Editor Integrations
  • Visual Studio Code/VSCodium extensions:
    • Even Better TOML
  • To make things easier, put Xenia Canary in the directory that contains /patches and run it with portable.txt.

Guidelines

• Patch must be named Title ID - Game Title.patch.toml and be in /patches.
  For example, a patch file for Blue Dragon must be called 4D5307DF - Blue Dragon.patch.toml.
• If you are making a patch for a game that already has a file, then add to it*
  • Only exception being if you're patching a different module.
• Submitting patches:
  • No whitespace.
  • Lowercase hex for address/value hex, uppercase for title ID/hash/media ID.

How to get the module hash and filename:

1. Set log_level to at least 2 (default) in the Xenia Canary config; See How to use for location.
2. Run the game at least once.
3. Close Xenia Canary.
4. Obtain module hash/title ID/title name;
   • Search Ctrl+F for Module hash: in xenia.log
     You should see something like:

     i> ######## Module \Device\Cdrom0\default.xex:
     Module Hash: ################
     

   • Patches can have multiple executables/hashes. Only leave the hash(es) you're using uncommented: https://github.com/xenia-canary/game-patches/blob/95f51801048dc6e95675581e3fcf8fcdfc3e5544/patches/454108D8%20-%20Army%20of%20Two%20The%2040th%20Day.patch.toml#L3-L6

Patch types

[[patch.*]]	Info	Value (example)
be8	Hex, 1 byte	0x00
be16	Hex, 2 bytes	0x0000
be32	Hex, 4 bytes	0x00000000
be64	Hex, 8 bytes	0x0000000000000000
array	Hex, any size	0x##*
f32	Float, single	1.0
f64	Float, double	1.0
string	String, UTF-8	"string"
u16string	String, UTF-16	"string"

Example patch

title_name = "Game Title"
title_id = "1234ABCD" # AB-1234
hash = "################" # Module the hash applies to (i.e. default.xex)
          # Can be an array if applicable:
hash = [
  "################"     # See above
]
#media_id = "1234ABCD" # Optionally you can add a redump link; Disc (Region): http://redump.org/disc/1234
#                        Can also be an array if applicable:
#media_id = [
#  "1234ABCD"          # See above
#]
# Title ID, hash, and media ID must be uppercase.

[[patch]]
  name = "Patch name"
  author = "Me"
  desc = "Patch description" # Description is optional
  is_enabled = false         # Must be false for PRs

# [[patch.*]]
#  For example, be8:
  [[patch.be8]]
    address = 0x82000000 # Tends to start with 0x8, always 4 bytes
    value = 0x00
#  Address and value hex must be lowercase.
#   string:
  [[patch.string]]
    address = 0x82000000 # Tends to start with 0x8, always 4 bytes
    value = "string"
# End of file newline