Rom Editing FAQ

This FAQ will hopefully explain the basics of rom editing, mainly for TSB (but also useful for other roms). Before you begin editing, you should download a hex editor, tile editor and have an emulator and rom. Nesticle itself has a built-in tile editor as well, which I will get into later. I will not talk about the TSB managers because they should be self-explanatory for anyone. They are Windows-based and very simple to use. To make a patch (.IPS) file of your changes, you must use the Nes/Snes tool. Choose "create .IPS" to make a patch, and choose "use .IPS" to use a patch on an unzipped rom (.NES).

***Before you use hex or tile utilities, BACK UP your roms***

A hex editor may be used to edit text in a rom. For example, you could change TSB so that it says "Daunte Culpepper" in the intro movie instead of "San Francisco 49ers" when showing the quarterback. To use a hex editor, open it and load the rom in the editor. Scroll down on the righthand side until you see some text. You may edit any text to your liking, but in most cases you must keep the same number of letters in the text that you are editing, or add spaces if you have fewer letters than were there before. If you try to input more letters than were already in the file, you will most likely ruin the rom. For example, if the hex says . . . NFC CENTRAL . . . and you try to put in . . . NCAA CENTRAL . . you have put in one character too many and the game may not work! However, if you had instead put in . . . NCAA WEST . . . then you have put fewer letters and one space, which will work. Play around with the hex editor and you will see what I mean by the amount of letters affecting the rom. A hex editor can be used to actually change the outcome of simulation (stats and win/loss records) in the game as well, for more info on that take a look here. Editing hex for accurate simulation takes a lot of time and practice... you've been warned! Hex editors are most popularly used in the creation of RPG hacks.

Now on to tile editing... tile editors are programs that extract graphics (tiles) from a rom, and allow you to edit them to your liking and then put them back into place. There are different color pallettes that make up the tiles in a game, a blend of which forms the variety of colors that you see when you actually play. Editing the color pallette is a chore. If you change one color, it will usually change others in the game. Editing tiles themselves, such as team helmets in TSB, is like putting a puzzle together, and can be quite frustrating (but it is possible). Nesticle has a tile editing feature included, which I've found to be easier to use than a separate tile editor. To use it, open Nesticle and load your rom. Pause the rom when you want to edit the screen. From the GUI menu, select "view pattern table." This allows you to edit the tiles and watch your work on-screen. The drawback of Nesticle's tile editor is that it lacks a clipboard for editing. If you have the patience, editing tiles is achievable... As mentioned before, just back everything up in case you mess up!

That's all for now. As I learn more about editing, I will update the page!

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