NES Hacking
This page is dedicated to hacking games for the NES by altering the ROM data of games or the memory of the NES. FCE Ultra Debugger
The FCE Ultra NES emulator has a powerful debugger which is especially helpful in hacking NES games. It allows you to view exactly how the NES runs through the game's code, you can check how it pages the memory, you can even step through each line of code as it is processed. Also with the memory viewer you can hack the game as it's running! Using the debugger and the memory viewer you can figure out the internal workings of the game and hack it to get what you want out of it. If you want to start hacking NES games, the debugger is a very useful tool that you should become familiar with. I'll write a basic tutorial for hacking soon, but for now I just wanted a place to put my hacking notes for various games. Some of these notes give ROM offsets which can be used for altering the ROM itself. Some of them contain memory information which are helpful for decompiling to source. |
NES NTSC Color Palette
This is the NES NTSC color palette using the same algorithm used for displaying NTSC colors, so it should look identical to what you would see on an NTSC television. You'll notice that the NES palette is actually quite terrible as far as game palettes go. The visible color merges are blocky and uneven, there isn't a good yellow, the grayscale is terrible, and there are ten color entries used for black.
Download the Palette |
Game Notes
Abadox: The Deadly Inner WarBad DudesBionic Commando
Text Table Blaster MasterCity ConnectionContraGauntletGooniesGuerrilla WarGun.SmokeKid IcarusLife ForceLittle Nemo: The Dream MasterMad CityMarble MadnessMega ManMike Tyson's Punch-Out!!RampageSalamanderSection Z
Text Table SoccerSpy HunterSuper C
Text Table More Weapons The flame thrower has a special ability where you can hold down the fire button for a second and then let go to release a huge fireball that breaks into eight flames instead of four. The cheat codes below will let use use special aspects of the flame thrower. The first one is a mini flame thrower that only shoots out about a third of the width of the screen. What it appears to be is one of the mini fireballs that the normal flame thrower explodes into. It's kind of cool with a turbo controller, you basically create a powerful laser of flames in front of you. The second cheat gives to the big charged fireball constantly. It starts out as a machinegun bullet, increases into a normal flame thrower ball, then then two thirds across the screen it becomes a huge fireball that explodes into eight mini fireballs upon impact. It also goes right through enemies like a laser and is extremely powerful. It can destroy most turrets in a single hit, and bosses are rapidly annihilated. You can even keep enemies at bay by merely firing at the ground and creating a circle of flames all around you. To make things easy here are the cheat codes to get them. Open up FCE Ultra, load Super C, and go to the "NES" menu option and click "Cheats". Over on the cheats column and enter one of the following cheats: Name: Keep Mini Flame Thrower P1, Address: 00B8, Value: 134 Compare: 134. Then click "Add". This will make it so you always have the weapon specified (with rapid fire) even when you die or pick up a different weapon. If you want this to work for player 2, just change the address to 00B9. Check out the pictures below to see what the weapons look like.
Teenage Mutant Ninja Turtles II: The Arcade GameTetrisTiger-HeliTop GunUltima: Exodus |
Links
nesdev.parodius.com - Tons of NES hacking links. |
© Copyright 2007-2008: Dean Tersigni. All rights reserved.