I had a private message from somebody asking me about converting some NES Game Genie codes for Yo! Noid. As Yo Noid! is a Playchoice 10 game and is basically the NES version in arcade form. I managed to find a convertor on the net and figured out the MAME equivalents:
The Genie has these Yo! Noid codes:
SXKTTUVK + SXKVPUVK: Infinite lives

Mega Man 6 for NES cheats - Cheating Dome has all the latest cheat codes, unlocks, hints and game secrets you need.

SXXLIGVG: Stop timer
IAKUVGPA: More magic from small scrolls

1. Start the Game with all weapons: 1089 - F05D 1089 - F1E0 1089 - F287. Another One shot code (Incase others don't work): 10C9-E711 10C9-E800 10C9-E987.
2. Mega Man 7 Cheats. Mega Man 7 cheats, Tips, and Codes for SNES. Jump to: Tip (1) Cheat (3). The best Mega Man game in the original series? 0 » view all threads. Mega Man Series.
3. This gives you a very unique choice with Jnes for adding cheats! It is the only Nes emulator that allows you to add and use Game Genie and Pro Action Replay Codes plus multiple cheat codes on one adding. Adding Game Genie Codes: Click on Add and choose the Game Genie Option from the Context Menu.
4. Flame - A1/2/3 B1 F5 Blizzard - A1 B4 C3 D4 E6 Plant - A1/4 B1 C2 F5 Tomahawk - A6 C4 D2 E1/5 Yamato - A6 B3 C4 D2 E5., Mega Man 6 for the NES Game Video Walkthroughs 3DS.
5. This gives you a very unique choice with Jnes for adding cheats! It is the only Nes emulator that allows you to add and use Game Genie and Pro Action Replay Codes plus multiple cheat codes on one adding. Adding Game Genie Codes: Click on Add and choose the Game Genie Option from the Context Menu.

AEUGSKTZ: Multi-mega-jumps
PAXSNZLA: 1 continue
TAXSNZLA: 6 continues
ZEVSKPPA: Start on stage 2
GEVSKPPA: Start on stage 4
TEVSKPPA: Start on stage 6
AEVSKPPE: Start on stage 8
ZEVSKPPE: Start on stage 10
GEVSKPPE: Start on stage 12
I managed to convert these into the following ROM codes (yess GG codes are ROM pokes!), they are not all direct conversions. The Lives, Jumps, more magic and start on stage cheats are straight caonversions though (except for adding $8000 to the addresses which is likely a Playchoice 10 thing)
NES GG stuff (8 character code)

Code: Select all

NOTE: This is an approximation of how it's coded from what I could work out.. It's a bit more complicated than that it takes other values into consideration and there seems to be a switch when you pass certain values and it will change a different value... I understand the basics of what it's doing and I ain't gonna look at it anymore because it'll gimme a headache, the program on the net seems to do the trick - perhaps if I ask nicely for the source... Anyway on with my point (for Ian Patterson)
To be honest as the NES (and other 8 bit consoles) uses paging a LOT it's gonna be difficult producing 100% bug free cheats - who ever designed the NES GG originally seems to have done a half arsed job as there's also 6 char codes which I presume had no error checking and poked the value constantly. The 8 char code seems to be more solidly built and I can't comment on it's soundness on the actual NES because I don't know how the value was poked, but with the MAME cheat engine only pokes at set intervals it means some cheats will not work as I'd hoped (ROM time for the above game will not work in MAME because of this I think - and it looks like it should). A new ROM cheat type would be nice where the cheat engine will poke the actual ROM rather than the part of memory that it occupies when it's paged in. It will mean that these cheats will not be really compatable with Game Genie and are much harder to convert back - but the codes will be solid with few side effects. I am presuming that even some 8 char NES game genie codes where buggy from what I read on the net and this is the likely cause.... Bet it's gonna be impossible to code though, another solution maybe for some error checking similar to the 8 character Game Genie code where it would only poke the address if it contains a certain value...fast paging may make this pointless on some games with the MAME poking speed though.
Apologies if most of the above ramble makes no sense, I'm just thinking ahead to try and make a NES cheat file for MESS with minimum initial effort....though short term it may help with cheats for the MAME Playchoice 10 games. If anybody has a big list of cheats for any of these Game Cheating devices for the various consoles/home systems please get in touch - I've seen a few sites where the codes are kept on hundreds of seperate individual pages for each game and this is not what I'm after really.

If you have a NES Game Genie and arn't doing very well in The Legend Of Zelda, thenmaybe some of these codes will help you out!
Game Genie codes

The Legend of Zelda

NSKUILTA Infinite energy

SXPAPO Some enemies can't move

SXYAPO Walk up a screen, and you can walk all over at the top.

NYAZPA Everything except you and the enemies are black, even your hearts.

YGAEXP Enemies in shop, enemies in top corner outside and some enemies are stuck in the Laburnums

Mega Man 6 Cheat Codes Nes Game Genie Nes

NOTE: If their is an 'o' next to the code it means it will only work with the old version of Zelda. You can tell if you have an old version when you die and it says Continue, Save, Retry and nothing else. If you have the new version it will also have a red box that says Hold in the Reset button when you turn off the power. If there is an '?' next to the code, the code has not been tested on both versions of the game.

PPLXZZ Touch wall and a ghost will appear

PPEEAA Brings up castle subscreen at all times

VVTTSP Puts you on beginning screen

POZXXU Walk around and fire sword, you will get stuff on location--?

AAIZZI Infinite money--?

AEEAEE all enemies in game are falling rocks

AAPVEX Start game at the top left corner of map

AAANAA Walk through walls in castles. Use the whistle to get to a castle.

AAPNLO Walk through walls, trees, and water in the overworld. Don't enter caves; if you do you will not be able to get out.

Nintendo Nes Game Genie Codes

OSTLLY Press the B button to use weapons you do not have. When using this code you must have no weapons. You may have to press the B button several times.

AIIOOV Start with 24 bombs--o

TIIOOV Start with the potion--o

YIIOOV Start with the wand--o

IIIOOV Start with the meat--o

GIIOOV Start with the whistle--o

LIIOOV Start with a green candle--o

ZIIOOV Start with the bow--o

PIIOOV Start with a very strong arrow. (This arrow can't kill Ganon so of you want to pass the game don't use this code)--o

TTIOOV Start with 24 keys--o

ITIOOV Start with 24 coins--o

IYIOOV Money goes up once in a while--o

AKITVX Forms new entrance when you leave a cave

EENAKP Different stuff in caves

KTVXXZ Secret entrances are open. (you can't kill the snake in the last level with this code)

XYYYYL Meat comes out of shooting sword

KIOZXX Rooms are split in half, you might be able to find things, like Hearts.

VXXTSS Walk when you usually can't--o

SZZVVZ Link is different colors

PPZXYY Change castle

XXLLLZ Rapid B button is on, walk through some enemies

IZLZZZ Wall changes into rock man when you touch it

Mega Man 5 Nes Game Genie Codes

OPPEEA Speed writing

Mega Man 2 Game Genie

PPEEAA Brings up castle subscreen at all times

Game Genie Codes For Nes