From CloudModding OoT Wiki

(the following codes have been tested on emulator)

Throw infinite bombs
801CA9AB 0000

Press L for White Tunic
810F8134 FFFF
800F8136 00FF
D01C8D74 0020
801DB42C 0004

Press R for White Tunic:
800F8137 00FE
810F8138 CF0F
D01C8D75 0010
801DB42C 0005

Skip Long Texts (supposed to skip long cutscenes by not displaying the text. Press L or R during short convos)
D01C8D75 0000
801D8BE8 0002

Japanese Language Mode
8011C089 0000

English Language Mode
8011C089 0001

Ura Zelda Disk Title
D00EB9AE 0001
801F13DB 0004

Ura Zelda Disk Save
801E5780 2222

4th Wallet Hack (modify last digit for set amount to make the 4th wallet usable)
81070B8C 2401
81070B8E 0057
81070B90 00E1
81070B92 1025
81070B94 1422
81070B96 000B
81070B98 8102
81070B9A A672
81070B9C 3042
81070B9E 0020
81070BA0 5427
81070BA2 0004
81070BA4 2405
81070BA6 0001
81070BA8 1C40
81070BAA 0002
81070BAC 2405
81070BAE 0003
81070BB0 2405
81070BB2 0002
81070BB4 0C02
81070BB6 04A5
81070BB8 2404
81070BBA 0004
81070BBC 1000
81070BBE 03AC
81070BC0 2402
81070BC2 00FF
810F7C66 0003
810F9342 03E7

Wallet Size Modifier
8011AD22 00??

Digits:

47 kid
57 adult
67 giant
77 mystery

Replace Roll with Jump
D11DB4B0 3FA0
811DB350 40FF

Press L for Inventory Editor
D01C8D75 0020
801D9697 0002

Use Items Anywhere
8106F302 0000
8106F30A 0000

Subscreen Fix
D01C78E1 0002
801DAE8B 0002
D01C78E1 0002
801C78E1 0003

Age Modifier
D01C8D75 0010
8011AC87 00??

Digits:

00 Adult
01 Child

Auto Biggoron Sword
8011ACBE 0001

Small/Unbreakable Deku Stick
801DBB3D 0000

Always have ISG
801DBB23 0001

Light Game Select
8111C09A 2222

Infinite Magic
D011ACB9 0008
8011ACBA 0001
8011ACBC 0001
8011ACB3 0060

Beta Inventory (theoretically)
8011ACF4 0006
8011ACF5 0009
8011ACF6 0002
8011ACF7 0003
8011ACF8 0038
8011ACF9 0005
8011ACFA 0000
8011ACFB 000F
8011ACFC 0001
8011ACFD 0011
8011ACFE 0039
8011ACFF 000D
8011AD00 000E
8011AD01 0008
8011AD02 0010
8011AD03 000B
8011AD04 003A
8011AD05 0013
8011AD06 003D
8011AD07 003C
8011AD08 0014
8011AD09 0018
8011AD0A 0037
8011AD0B 002B

Infinite Energy
8111ACB0 0150

Maximum Hearts
8111ACAE 0140

Levitate
D01C8D75 0020
811DAA90 40CB

Use Items Somewhere
8106F302 0630
8106F30A 0630

Infinite Rupees
8111C042 0001

Majora's Mask HUD
811C8210 0064
811C8212 00C8
811C8214 00FF
811C7F3A 0064
811C7F3C 00FF
811C7F3E 0078
811C7F32 00FF
811C7F34 00FF
811C7F36 0000
811C8204 0017
811C8206 00BE
811C820A 0017
811C820C 00BE
811C7F70 00A7
811C7F78 0011
811C7F88 00A7
811C7F90 0011
81075F7A AAAA
80075F8E 00FF

Tunic & Boot Modifier
8011ACF0 00??

Digits:

11 Kokiri Tunic & Kokiri Boots
12 Goron Tunic & Kokiri Boots
13 Zora Tunic & Kokiri Boots
14 Black Tunic & Kokiri Boots
15 White Tunic & Kokiri Boots
16 Yellow Tunic & Kokiri Boots
21 Kokiri Tunic & Iron Boots
22 Goron Tunic & Iron Boots
23 Zora Tunic & Iron Boots
24 Black Tunic & Iron Boots
25 White Tunic & Iron Boots
26 Yellow Tunic & Iron Boots
31 Kokiri Tunic & Hover Boots
32 Goron Tunic & Hover Boots
33 Zora Tunic & Hover Boots
34 Black Tunic & Hover Boots
35 White Tunic & Hover Boots
36 Yellow Tunic & Hover Boots

Shield & Sword Modifier
8111AD1C 7777
8011ACF1 00??

Digits:

11 Deku/Kokiri Sword
12 Deku/Master Sword
13 Deku/Giant's Knife/Biggoron Sword
21 Hylian/Kokiri Sword
22 Hylian/Master Sword
23 Hylian/Giant's Knife/Biggoron Sword
31 Mirror/Kokiri Sword
32 Mirror/Master Sword
33 Mirror/Giant's Knife/Biggoron Sword

Ocarina Sound Modifier
8010284C 00??

Digits:

01 Normal
02 Malon's Voice
03 Alt. Ocarina
04 Harp
05 Music Box
06 Alt. Ocarina
07 Normal

Time of Day Modifier
8111AC8C ????

4000     At Sunrise
5800     Daylight Out
7000     Very Bright Out
C000     At Sunset
D000     Fairly Dark

Frontflip Manual Jump
813AAE0E 2A60

Frontflip Jump Strike (Zelda 64 Beta Frontflip Jump Attack)
813AB362 2A60
813AB366 2910
813AB36A 2910
813AB382 2A50
813AB386 2A58
813AB38A 2A58

Crawl Space Hack (Adult Link can crawl through holes like Young Link)
D03962EF 0099
803962EF 0000

Manual Hop (Z-Target and Press A to make it Hop in the air)
D039308F 0002
8039308F 0001

Manual Jump (Z-Target, move forward, and Press A for him jump forward. Use the code below this one to make him look like he's frontflipping every time)
D139306C 1CC0
8139306C 04C1

Juggling Hack (makes it so he unsheathes his sword but doesn't swing right away like in prerelease trailers)
8138BC50 2842
8138BC52 0005
8138BC54 1440
8138BC56 0005
8138BC58 0000
8138BC5A 1025

A+B Button Swap (A=B, B=A)
811C8684 03E4
811C8686 FE98
810A2B88 0C1F
810A2B8A FC00
817FF000 0008
817FF002 0C02
817FF004 3029
817FF006 C000
817FF008 1120
817FF00A 0006
817FF00C 0001
817FF00E 1400
817FF010 3024
817FF012 7FFF
817FF014 303A
817FF016 BFFF
817FF018 0440
817FF01A 0002
817FF01C 3481
817FF01E 4000
817FF020 3741
817FF022 8000
817FF024 0272
817FF026 1021
817FF028 3C04
817FF02A 8014
817FF02C 3108
817FF02E FFFF
817FF030 0001
817FF032 0C00
817FF034 03E0
817FF036 0008
817FF038 0101
817FF03A 4025

Beta Navi Colors
810207F0 340F
810207F2 0060

Button Color Swap
801C7EF3 0020
801C7EF5 0016
801C7F3B 0050
801C7F3D 005F
801C7F3E 00FF
801C7F3F 00FF
801C7F44 0004
801C7F4B 0030
801C7F4D 0010
801C8211 0000
801C8212 005C
801C8213 00A3
801C8215 0000
801C8216 00F0

Use Anything (makes it so all items are available. only use this while in the inventory)
8139F8C4 0909
8139F8C6 0909
8139F8C8 0909
8139F8CA 0909
8139F8CC 0909
8139F8CE 0909
8139F8D0 0909
8139F8D2 0909
8139F8D4 0909
8139F8D6 0909
8139F8D8 0909
8139F8DA 0909
8139F8DC 0909
8139F8DE 0909
8139F8E0 0909
8139F8E2 0909
8139F8E4 0909
8139F8E6 0909
8139F8E8 0909
8139F8EA 0909
8139F8EC 0909
8139F8EE 0909
8139F8F0 0909
8139F8F2 0909
8139F8F4 0909
8139F8F6 0909
8139F8F8 0909
8139F8FA 0909
8139F8FC 0909
8139F8FE 0909
8139F900 0909
8139F902 0909
8139F904 0909
8139F906 0909
8139F908 0909
8139F90A 0909
8139F90C 0909
8139F90E 0909
8139F910 0909
8139F912 0909
8139F914 0909
8139F916 0909
8139F918 0909
8139F91A 0909
8139F91C 0909
8139F91E 0909
8139F920 0909
8139F922 0909
8139F924 0909
8139F926 0909
8139F928 0909
8139F92A 0909
8139F92C 0909
8139F92E 0909
8139F930 0909
8139F932 0909
8139F934 0909
8139F936 0909
8139F938 0909
8139F93A 0909
8139F93C 0909
8139F93E 0909
8139F940 0909
8139F942 0909
8039F944 0009

No HUD (makes the HUD disappear)
811D9496 0000
811D9498 0000
811D949A 0000
811D949C 0000
811D949E 0000
811D94A0 0000
811D94A2 0000
811D94A4 0000

Hotswap Tunic Colors with D-Pad (Modifier)
D-Up
810F8128 RRGG
800F812A 00BB
--------------------
D-Right
800F812B 00RR
810F812C GGBB
--------------------
D-Down
810F812E RRGG
800F812F 00BB
--------------------
D-Left
800F8131 00RR
810F8132 GGBB
--------------------
L
810F8134 RRGG
800F8136 00BB
--------------------
R
800F8137 00RR
810F8138 GGBB
--------------------
D01C8D74 0008
801DB42C 0000
D01C8D74 0001
801DB42C 0001
D01C8D74 0004
801DB42C 0002
D01C8D74 0002
801DB42C 0003
D01C8D74 0020
801DB42C 0004
D01C8D75 0010
801DB42C 0005

Tunic to Jumpstrike
D01DB42C 0000
813AB362 29C0
D01DB42C 0000
813AB382 2AB0
D01DB42C 0000
813AB386 3240
D01DB42C 0001
813AB362 2A60
D01DB42C 0001
813AB382 2A50
D01DB42C 0001
813AB386 3240
D01DB42C 0002
813AB362 29D0
D01DB42C 0002
813AB382 28E0
D01DB42C 0002
813AB386 2910

Roll Strike (do a jump attack, see the results)
813AB362 3030
D01C8D74 0080
801DBB18 0041
D01C8D74 0080
811DAA90 3FA0

Hide All Equipment
810F7E6C 0000
810F7E6E 0000
810F7E5C 0000
810F7E5E 0000
810F7E74 0000
810F7E76 0000
810F7E64 0000
810F7E66 0000

Interface On/Off
8011BFDF 00??

00 On
01 Off
02 File Select

Elemental Sword Attacks
801DB7DD 00??
801DB85D 00??

00 None
02 Fire
04 Ice
08 Light

Items Don't Use Magic
D011C071 0002
8011C071 0000
D011C071 0003
8011C071 0000
D011C071 0004
8011C071 0000
D011C071 0007
8011C071 0000

Shield without Sword (just shield without swinging and you'll see)
D01DB43B 0002
D01DB434 00FF
801DB434 0000

Ura Zelda File Select
81001CCC 03E0
81001CCE 0008
81001CD0 2400
811C7E78 03E0
811C7E7A 0008
811C7E7C 2400
811C70F0 03E0
811C70FE 0008
811C7100 2400
811C6EA0 03E0
811C6EA2 0008
811C6EA4 2400
811C7F90 03E0
811C7F92 0008
811C7F94 2400
811C70FC 03E0
811C70FE 0008
811C7100 2400
811C7268 03E0
811C726A 0008
811C726C 2400
813B2FF0 0000
813B2FF2 0000
80121212 0001
811E4E8C 22AA
811E4EC0 0022

One-Handed Hylian Shield (allows young link to hold hylian shield but it looks like deku shield)
81079B30 0000
81079B32 0000
810F7E2C 0601
810F7E2E 4440
810F7E34 0601
810F7E36 4440

Flammable Hylian Shield (Adult Link)
810F7E18 0602
810F7E1A 2970
810F7E20 0602
810F7E22 7918
810F7E58 0602
810F7E5A 0A78
810F7E60 0602
810F7E62 5FB8
810F7EB8 0602
810F7EBA 0E70
810F7EC0 0602
810F7EC2 8150

Beta Navi Prelease Hack (Makes it so your Z-Targetting is red-colored, textboxes are white, and HUD's altered)
811C8688 00FF
811C868A 00FF
811C868C 00FF
811D9236 9090
811D9238 9090
811D923A 9090
811D923C 9090
811D923E FFFF
810E887C FF00
810E887E 00FF
810E8880 FF00
810E8882 00FF
810E8884 FFFF
810E8886 00FF
810E8888 FFFF
810E888A 00FF

Megaton Hammer Spin Attack (put your megaton hammer wherever, and then when you swing, make sure to press B and Voila!!!)
D01DB432 0011
D01DBB22 0016
801DBB24 0002
D01DB432 0011
D01DBB22 0016
811DB278 3DA3
D01DB432 0011
D01DBB22 0017
801DBB24 0002
D01DB432 0011
D01DBB22 0017
811DB278 3DA3