nensondubois' codes

[nensondubois]

Super Mario Bros. 3 (U) (PRG0) [!].nes

Infinite P-Switch Time
SZKLGVSE

P-switch last much longer than usual
EGKLLTEA

P-switch last for a very long time
NYKLLTEE

P-Switch music modifier (wrong sample banks may play)
B648:??:A0

P-Switch sprite CHR modifier
8E2A:??:3E

P-Switch is always active
OYKGKAYT

P-Switch always appears active
STXASTYV

P-Switch never appears active
XYXASTYT

Timer goes slightly faster than usual
GXUZVNAZ

Timer goes faster than usual
AXUZVNAZ

Timer goes much faster than usual
TOUZVNAZ

Timer goes slightly slower than usual
AUUZVNAZ

Timer goes slower than usual
AKUZVNAZ

Timer goes much slower than usual
GVUZVNAZ

Timer lasts for a really long time
EEUZVNAZ

[nensondubois]

Tokyo Disneyland - Fantasy Tour (Japan) (SGB Enhanced).gb
Infinite time to in all games
00E-0EE-19E

Always guess quiz answers correctly
18B-F8B-4CA

[nensondubois]

Pac-Attack (USA) (SGB Enhanced).gb
Place piece to clear stage (puzzle mode only)
FE2-A49-C45

Pac-Man - Special Color Edition (USA) (SGB Enhanced) (GB Compatible).gbc
Place piece to clear stage (puzzle mode only)
FE8-559-C45

[nensondubois]

Small Soldiers (USA, Europe) (SGB Enhanced).gb

041-F29-E6A
Restore unused Battle with Chip Boss theme
(the song is unused and was intended to play at the final boss. Music Test 05 track. Changes both GB, SGB soundtracks.)

Disable Super Game Boy soundtrack
185-87F-6EA

[nensondubois]

Yume Koujou Doki Doki Panic (1987)(Nintendo).FDS

Can Enter First Door In 1-1
YZKGEZTI
AGKGOZAP

All characters can multi-jump / jump in mid-air
VLKEITVT
SANEYYSZ
VZNAVYKZ

Play character select music plays in overworld
ZESLSZPA

Underground cave music plays in overworld
GESLSZPA

Boss battle music plays in overworld
AESLSZPE

Star music plays in overworld
AOSLSZPA

Sub-Space music plays in overworld
AXSLSZPA

Wart music plays in overworld
AKSLSZPA

No music plays in overworld
AESLSZPA

The music banks are stored on different disk sides,

[nensondubois]

Yoshi's Cookie U.nes

Title screen music modifier (4 address pointer array)
8342:??:24
834A:??:25
8352:??:26
835A:??:27

Example:
Play Blinded theme at title screen
ALKAZLGX
PLKEZLIX
ZLSAZLTX
LLSEZLYX

1P A TYPE music modifier
82D9:??:07
82E1:??:08
82E9:??:09
82F1:??:0A

1P A TYPE (secret) music modifier
8598:??:5A
85A0:??:5B
85A8:??:5C
85B0:??:5D

VS TYPA A music modifier
8386:??:20
838E:??:21
8396:??:22
839E:??:23

Song ID list
07, 08, 09, 0A - 1P TYPE A
0B, 0C, 0D, 0E - 1P TYPE B
15, 16, 17, 18 - 1P TYPE C
20, 21, 22, 23 - VS TYPE A
24, 25, 26, 27 - Title
28, 29, 2A, 2B - VS Panic
2C, 2D, 2E, 2F - ???
30, 31, 32, 33 - VS Slave
34, 35, 36, 37 - VS Win ???
38, 39, 3A, 3B - VS Blind
3C, 3D, 3E, 3F - VS Yoshi Cookie Point Change Jingle
40, 41, 42, 43 - Cutscene
5A, 5B, 5C, 5D - 1P TYPE A (secret rounds 11-99)
61, 62, 63, 64 - VS Win
65, 66, 67, 68 - VS win Final
6C, 6D, 6E, 6F - End
70, 71, 72, 73 - End (Unused variation?)
74, 75, 76, 77 - VS TYPE B
78, 79, 7A, 7B - VS TYPE C

[nensondubois]

Legend of Zelda, The - Link's Awakening (USA, Europe).gb Invulnerable
(Flashing)
38B-9FF-4CA
Legend of Zelda, The - Link's Awakening (USA, Europe) (Rev 1).gb
Invulnerable (Flashing)
38B-9FF-4CA
Legend of Zelda, The - Link's Awakening (USA, Europe) (Rev 2).gb
Invulnerable (Flashing)
38B-9FF-4CA
Legend of Zelda, The - Link's Awakening DX (USA, Europe).gbc
Invulnerable (Flashing)
38F-94F-4CA
Legend of Zelda, The - Link's Awakening DX (USA, Europe) Rev 1).gbc
Invulnerable (Flashing)
38F-90F-4CA
Legend of Zelda, The - Link's Awakening DX (USA, Europe) Rev 2).gbc
Invulnerable (Flashing)
38F-90F-4CA

[nensondubois]

Senkai Ibunroku Juntei Taisen - TV Animation Senkaiden Houshin Engi Yori (Japan) (SGB Enhanced).gbc

Start game in debug menu
001-E9F-F7E

Title screen sound effect / music modifier (sound effects range from 00-2B, music is from 2C-38)
??B-609-5DA

Senkai Ibunroku Juntei Taisen - TV Animation Senkaiden Houshin Engi Yori (Japan) (SGB Enhanced).gbc
The game contains an unused OBJ_TRN listing despite not actually being implemented or loading additional CHR. Also no palettes for this game. More information here: https://twitter.com/nensondubois_/status/1342569878243352577 and https://twitter.com/nensondubois_/status/1489709951383744512
1 18 OBJ_TRN C1030400050006000700000000000000
It is still unknown why these few listings exist in games.
Load unfinished Super Game Boy OBJ_TRN command
00A-6F9-E6E
0C0-CBB-193
410-CCB-4C3

[nensondubois]

https://twitter.com/nensondubois_/st...60393120182274

Duck Hunt (U) [!].nes
Play Game A and B in Clay Shooting Mode
IAVKXALE
Play Game C in Duck Hunt Mode (All but first lines are optional to fix the palette issues)
LEESYSIA
GZUTGYPX
LEVKOGZA
VXVKEAKA
GZXTGYPX
GZXVGYPX

Super Mario Bros. + Duck Hunt (U) [!].nes
Play Game A and B in Clay Shooting Mode
IAVKXALE
Play Game C in Duck Hunt Mode (All but first lines are optional to fix the palette issues)
LEESYSIA
GZUTGYPX
LEVKOGZA
VXVKEAKA
GZXTGYPX
GZXVGYPX

Super Mario Bros. + Duck Hunt + World Class Track Meet (U) (PRG0) / (PRG1) [!].nes
Play Game A and B in Clay Shooting Mode
IAVKXALE
Play Game C in Duck Hunt Mode (All but first lines are optional to fix the palette issues)
LEESYSIA
GZUTGYPX
LEVKOGZA
VXVKEAKA
GZXTGYPX
GZXVGYPX

[nensondubois]

Hyper Lode Runner (JU) [!].gb
Can start at any level without passwords
326-F7F-A2A
Invulnerable
C91-1AC-C49

[nensondubois]

Micro Mages.nes
title screen music modifier (do not press start at intro)
A68B:??:05

[nensondubois]

Sim Earth - The Living Planet (U) [!].sfc
Scenario select screen music modifier
009DB7??
0C - Earth Present Day

[nensondubois]

Doom (USA) Doom (U) [!].sfc
Start at Level (00-1A; some level IDs are null entrees. 1A Seems to be an unknown version of Inferno 12 with Shores of Hell music)
5FFABA??

Start at Unknown Duplicate Inferno Level
FCE8-B183

[nensondubois]

Doom (USA) Doom (U) [!].sfc
Display Hidden Credits Easter Egg at Title Screen
5FEF6A01

[nensondubois]

Doubutsu no Mori + (J) [Gamecube] ID 1BF
Item 1 is Zelda no Densetsu (FC Famicom Cartridge version) 1.0
QX57-T0TN-8ADKZ
TJHX-82UG-1R0HM
Item 1 is Zelda no Densetsu (FC Famicom Cartridge version) 1.0
T2N2-8A8E-KYKN5
GN0Z-CEVD-DDBRJ
Item 1 is Zelda no Densetsu (FDS Famicom Disk System version) 1.0
02C02050 28000000
03260F44 00001DF0
Item 1 is Zelda no Densetsu (FC Famicom Cartridge version) 1.0
02C02050 28000000
03260F44 00001FBC

https://twitter.com/nensondubois_/st...32351057784832 The Famicom Cartridge version of Legend of Zelda / Zelda no Densetsu is actually a fully functional in-game item, programmed to load the game! The item ID is 1FBC while the Disk System version is 1DF0. I will record another video later. Uses the FDS model, no green cart.