Editing Cheats and patches
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− | + | Cheats are when you modify variables from the RAM so that the game becomes more enjoyable to play outside what devs intended. Patches are cheats which act like executable code to achieve the same goal, and are more prevalent on systems like the GC/Wii/PS3/PSP/3DS. | |
− | Cheats are when you modify variables from the RAM so that the game becomes | ||
− | There are either common cheat codes by | + | There are either common cheat codes by manifacturers of unlicensed devices plugged to real consoles to do the RAM manipulation, including the Game |
Genie, GameShark, Code Breaker, and Action Replay. Some homebrew mods offer cheats and tools to make them, like CWCheats on the PSP. These cheats are also supported by many emulators. Emulators offer the possibility to have another type of cheat codes directly modifying one specific RAM address, and tools to find these wanted RAM addresses and create cheats for them. | Genie, GameShark, Code Breaker, and Action Replay. Some homebrew mods offer cheats and tools to make them, like CWCheats on the PSP. These cheats are also supported by many emulators. Emulators offer the possibility to have another type of cheat codes directly modifying one specific RAM address, and tools to find these wanted RAM addresses and create cheats for them. | ||
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Sometimes cheats are also needed to circumvent anti-piracy protection, bugs or emulator crashes. Cheats alter games only temporarily. If you want permanent alterations, you may want to alter the ROM image itself. See modding articles. | Sometimes cheats are also needed to circumvent anti-piracy protection, bugs or emulator crashes. Cheats alter games only temporarily. If you want permanent alterations, you may want to alter the ROM image itself. See modding articles. | ||
− | == | + | ==General Idea== |
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Mednafen supports the usual cheats such as GameShark, Code Breaker, and Action Replay. The cheats menu can be accessed (or quit back to normal gameplay) with '''ALT+C'''. | Mednafen supports the usual cheats such as GameShark, Code Breaker, and Action Replay. The cheats menu can be accessed (or quit back to normal gameplay) with '''ALT+C'''. | ||
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Searching for new cheat codes is also possible. The general idea being comparing variables, going back to gameplay so that this variable changes then back to the cheat engine searching for any variables that changed in that particular way. For example: | Searching for new cheat codes is also possible. The general idea being comparing variables, going back to gameplay so that this variable changes then back to the cheat engine searching for any variables that changed in that particular way. For example: | ||
− | * '''Infinite Health / Ammo / Time / Money:''' you start with 5 hearts, reset search (in the cheat engine, not reset the game you silly!), you get hurt to 4 hearts, search variables that decreased, get healed back to 5 hearts, search variables that increased, and so on. For money | + | * '''Infinite Health / Ammo / Time / Money:''' you start with 5 hearts, reset search (in the cheat engine, not reset the game you silly!), you get hurt to 4 hearts, search variables that decreased, get healed back to 5 hearts, search variables that increased, and so on. For money you can start with 0 when you have 0 gold and try earning/spending money. You could try using save states as well when you don't have as much freedom changing the value. |
− | * '''Infinite Lives:''' It's game over when the internal variable for "Lives" is 0. So in some cases, when it shows "REST/LEFT=1" in-game and you lose a life then it becomes 0 but you're still allowed to play on your last life, that means the internal counter for lives has actually changed from 2 to 1 and not from 1 to 0, but in other games (where if you die on "LIVESx1" it's game over) it's not the case. In the case of lives, you actually know the exact value: reset search initially, then (if you have 2 lives on a game that allows you to play on "LEFT=0") search for variables with values equal to 3. Lose a life, search for variables equal | + | * '''Infinite Lives:''' It's game over when the internal variable for "Lives" is 0. So in some cases, when it shows "REST/LEFT=1" in-game and you lose a life then it becomes 0 but you're still allowed to play on your last life, that means the internal counter for lives has actually changed from 2 to 1 and not from 1 to 0, but in other games (where if you die on "LIVESx1" it's game over) it's not the case. In the case of lives, you actually know the exact value: reset search initially, then (if you have 2 lives on a game that allows you to play on "LEFT=0") search for variables with values equal to 3. Lose a life, search for variables equal 2, and so on. |
* '''Character Modifier / Level Modifier / Having an Item:''' reset search, play without changing whatever you're searching for (let's say the stage), do lots of searches for new value equals old value. In-game, change it, then do a new value doesn't equal old value. And so on. | * '''Character Modifier / Level Modifier / Having an Item:''' reset search, play without changing whatever you're searching for (let's say the stage), do lots of searches for new value equals old value. In-game, change it, then do a new value doesn't equal old value. And so on. | ||
* '''Walk Though Walls / Invincibility / In-game Cheats & Features :''' you need to find the value that tells the character if he can move or not (he can't really move when walking against a wall) / if he's blinking or being invincible right now after getting hurt. Same methods as before, but there are hints that could be useful here -- both states could be 0/1, or something else... for example, one could assume 0 is not enabled and 1 is enabled. | * '''Walk Though Walls / Invincibility / In-game Cheats & Features :''' you need to find the value that tells the character if he can move or not (he can't really move when walking against a wall) / if he's blinking or being invincible right now after getting hurt. Same methods as before, but there are hints that could be useful here -- both states could be 0/1, or something else... for example, one could assume 0 is not enabled and 1 is enabled. | ||
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The goal of these searches is to narrow down the list of results to a single or handful of addresses (variables) pertinent directly to whatever we're searching for. The search always starts with "Reset Search", going back in-game (Alt+C) to play and change stuff, then back to the cheat engine to compare the "Original" value with the "Current" value. Then you check the results page which must get smaller and smaller (if it's 0 results, you screwed up and need to reset search to try again). The comparing options offered by Mednafen are as follow, with O being the Original value, and C being the Current value (when you reset a search, they're the same): | The goal of these searches is to narrow down the list of results to a single or handful of addresses (variables) pertinent directly to whatever we're searching for. The search always starts with "Reset Search", going back in-game (Alt+C) to play and change stuff, then back to the cheat engine to compare the "Original" value with the "Current" value. Then you check the results page which must get smaller and smaller (if it's 0 results, you screwed up and need to reset search to try again). The comparing options offered by Mednafen are as follow, with O being the Original value, and C being the Current value (when you reset a search, they're the same): | ||
− | * '''1) O==V1 && C==V2 :''' if you know the explicit numerical values for the variable you write it here. | + | * '''1) O==V1 && C==V2 :''' if you know the explicit numerical values for the variable you write it here. First time, just write same value in both. Subsequent times, leave O blank and press Enter so that you don't write the old value again, and write the current value under C. |
* ''' 2) O==V1 && |O-C|==V2 :''' same, but instead of writing the current value you write by how much it changed (0 if old value equals new value) | * ''' 2) O==V1 && |O-C|==V2 :''' same, but instead of writing the current value you write by how much it changed (0 if old value equals new value) | ||
* '''3) |O-C|==V2 :''' you write by how much it changed (0 if old value equals new value) | * '''3) |O-C|==V2 :''' you write by how much it changed (0 if old value equals new value) | ||
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* '''6) Value increased :''' if new value bigger than old value | * '''6) Value increased :''' if new value bigger than old value | ||
− | == | + | ==Playstation== |
PCSX-R has a built-in cheat function. To use it, follow these steps: | PCSX-R has a built-in cheat function. To use it, follow these steps: | ||
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9. Click Close, and get back to the game by going to Emulator -> Run | 9. Click Close, and get back to the game by going to Emulator -> Run | ||
− | + | ==PlayStation 2== | |
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− | == | ||
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Tutorials on how to apply patches and cheats can be found [http://forums.pcsx2.net/Thread-redlof-s-Guide-to-Convert-Codetwink-Cheats-to-PNACH-Files-for-newbs here.] | Tutorials on how to apply patches and cheats can be found [http://forums.pcsx2.net/Thread-redlof-s-Guide-to-Convert-Codetwink-Cheats-to-PNACH-Files-for-newbs here.] | ||
Resources for cheats: [http://www.codetwink.com/ CodeTwink] | Resources for cheats: [http://www.codetwink.com/ CodeTwink] | ||
− | Patches for games may be found [http://forums.pcsx2.net/Thread-Post-your-PCSX2-cheats-patches-here here | + | Patches for games may be found [http://forums.pcsx2.net/Thread-Post-your-PCSX2-cheats-patches-here here.] |
[http://forums.pcsx2.net/attachment.php?aid=30208 CB2crypt] | [http://forums.pcsx2.net/attachment.php?aid=30208 CB2crypt] | ||
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The CRC code for a PS2 game is found in the PCSX2 console. | The CRC code for a PS2 game is found in the PCSX2 console. | ||
+ | ==Patches== | ||
− | + | '''Kingdom Hearts' 60 FPS patches''' | |
− | + | // 60 FPS Kingdom Hearts 2 Final Mix | |
+ | patch=1,EE,00349E1C,extended,00000000 | ||
− | + | // 60 FPS Kingdom Hearts 1 NTSC U/C | |
+ | patch=1,EE,002B624C,extended,00000000 | ||
− | + | // 60 FPS Kingdom Hearts 1 Final Mix | |
+ | patch=1,EE,002BBE0C,extended,00000000 | ||
− | + | // 60 FPS Kingdom Hearts 2 NTSC U/C | |
+ | patch=1,EE,00356F4C,extended,00000000 | ||
− | + | // 60 FPS Kingdom Hearts 1 PAL | |
+ | patch=1,EE,002B67CC,extended,00000000 | ||
− | + | // 60 FPS Kingdom Hearts Re: Chain of Memories NTSC U/C | |
+ | patch=1,EE,004386B0,extended,00000000 | ||
− | + | // 60 FPS Kingdom Hearts Re: Chain of Memories JP | |
+ | patch=1,EE,0043C930,extended,00000000 | ||
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+ | BONUS Birth By Sleep (Normal and Final Mix) | ||
+ | _C1 Force 60 FPS Mode | ||
+ | _L 0x21725EC8 0x00000000 | ||
[[Category:FAQs]] | [[Category:FAQs]] | ||
+ | {{stub}} |