Patching a Gameshark/Action Replay code to the SM64 US ROM can be easy or very hard depending on the kind of code. This guide will cover the simplest and most useful case, by which you can add interesting tweaks for your ROM Hack. Doing it (praxis) The most useful case is patching Gameshark codes type '80' or '81' which range from 0x80246000 to about 0x80333000. Within this range, lies pretty much all Mario/objects coding, so these are generally the codes that will be interesting to have in your ROM Hack as permanent. Let's suppose you want to have the 'Yoshi is Always on the Castle Roof' code by Viper187 in your hack. Here is the code: 81 2F8EC8 2400 The code type is 81 (write 2 bytes) to address 0x2F8EC8 in RAM with value 0x2400. To find the ROM address, just subtract 0x245000 from the address (more about it on part 2 of this guide).

[ Warning: this conversion will only work for RAM addresses which range from 0x80246000 to about 0x80333000 ] You can use Windows Calculator (in hexadecimal mode) to calculate it: 2F8EC8 - 2450000 = B3EC8. Now just open the ROM with you favorite hex editor, go to offset 0xB3EC8 and change it's value to 2400.If you have done it right, this is what it should look like (pic from Hex Workshop): At this point, if you attempt to run your ROM in a emulator the game won't load. That's because all the ROM range between 0x1000 and 0x100000 is checksum protected. Just use any of the CRC utilities found at to correct it. An alternate way is to, which might be useful if you want experiment patching many codes to the ROM without having to correct the checksum every time. If the code type was '80', the procedure would be the same, except that you would write only the modified byte (ie, for 802F8EC7 0020, write 0x20 at offset 0xB3EC7). Other code ranges: For codes between 800EB180 - 800F083C (behavior bank modifiers), just add 12EC80 to find the ROM address.

Select the 'Install Package Files' option and select the 'PS3SX' PKG file when the PKG list comes up on the TV screen. Select the PS3SX icon on the PS3 'Game' tab and the application's menu comes up. Select the PS1.bin file from the list of installed PS1 games to run the file on the PS3. Select the 'PS1' folder and then tap the game ISO or BIN file to select it. Tap the ' OFF ' button next to ' Cheats ' and turn it ' ON '. Then tap ' Cheats ' and enable the cheat codes that you want to use in the PS1 game.

Clkbank download instructions for ipod. You don't have to recalculate the checksum for these codes. Understanding it (theory) L ike most N64 codes, in Mario 64 all the game code is first copied from the ROM and then executed from the RAM. When you boot the game, the first thing that happens is that the entire ROM area from 0x1000 to 0x100000 is copied to RAM starting at 0x80246000 (in the US version). There's a lockout chip that will check if the checksum is right, so if you modify anything in this range the console will be set on an infinite loop. This check only happens during the boot process, so that's why there aren't problems when you apply a Gameshark code to this area when the game is running. This area, which as stated before contain most game code (except for script commands and a few other tings) is static, so in this case it's easy to make a Gameshark code permanent.