The Legend of Zelda: Link's Awakening (Game Boy)/RAM map

The following article is a RAM map for The Legend of Zelda: Link's Awakening (Game Boy).

RAM	Purpose
D401	Destination data byte 1: 00 - overworld, 01 - dungeon, 02 - side view area
D402	Destination data byte 2: Values from 00 to 1F accepted. FF is Color Dungeon
D403	Destination data byte 3: Room number. Must appear on map or it will lead to an empty room
D404 - D405	Destination data X and Y co-ordinates
D700 - D79B	Interactions for currently loaded map (water, stairs, doorways, etc). Note: the last 4 bytes in each row/address are not used. There is a 1 byte outline of FF surrounding the useable map. For example, these are the interactions for the SHOP screen right below Marin and Tarin's house. (04 is walkable ground, 0A is grass, 5C is bush, E2 is the shop entrance, etc.) FF FF FF FF FF FF FF FF FF FF FF FF 00 00 00 00 FF 0A 0A 0A 0A 0A 0A 0A 0A 0A 27 FF 00 00 00 00 FF 04 04 04 04 5C 5C 5C 04 3D 2F FF 00 00 00 00 FF 04 04 04 5C 55 5A 56 5C 38 0E FF 00 00 00 00 FF 04 04 04 5C 40 41 42 5C 38 0E FF 00 00 00 00 FF 04 44 04 5C 5B E2 5B 5C 38 0E FF 00 00 00 00 FF 04 04 04 5C 04 04 04 5C 38 0E FF 00 00 00 00 FF 04 04 04 04 5C 5C 25 26 38 0E FF 00 00 00 00 FF 26 25 26 25 26 25 2A 28 32 2C FF 00 00 00 00 FF FF FF FF FF FF FF FF FF FF FF FF 00 00 00 00
D800 - D8FF	World map status Each screen status is represented by a byte, which is a combination of the following masks : 00 : Unexplored 10 : changed from initial status (for example sword taken on the beach or dungeon opened with key) 20 : owl talked 80 : visited For example, visiting the first dungeon's screen (80) and opening it with the key (10) would put that byte at 90
DB00 - DB01	Your currently held items.
DB02 - DB0B	Inventory
DB0C	Flippers (01=have)
DB0D	Potion (01=have)
DB0E	Current item in trading game (01=Yoshi, 0E=magnifier)
DB0F	Number of secret shells
DB10-DB14	Dungeons entrance keys (01=have)
DB15	Number of golden leaves
DB16 - DB3D	Beginning of dungeon item flags. 5 bytes fo each dungeon, 5th byte is quantity of keys for that dungeon
DB43	Power bracelet level
DB44	Shield level
DB45	Number of arrows
DB49	Ocarina songs in possession (3 bits mask, 0=no songs, 7=all songs)
DB4A	Ocarina selected song
DB4C	Magic powder quantity
DB4D	Number of bombs
DB4E	Sword level
DB4F - DB53	File name during gameplay 00 through FF all work, although you will encounter other text and background tiles outside of normal letter tile ranges. 31 - 3a : Numbers 0-9 41 - 5B : Uppercase A-Z 62 - 7B : Lowercase a-z
DB56-DB58	Number of times the character died for each save slot (one byte per save slot)
DB5A	Current health. Each increment of 08h is one full heart, each increment of 04h is one-half heart.
DB5B	Maximum health. Simply counts the number of hearts Link has in hex. Max recommended value is 0Eh (14 hearts).
DB5D-DB5E	Number of rupees (for 999 put 0999)
DB65-DB6C	Instruments for every dungeon, 00=no instrument, 03=have instrument
DB76	Max magic powder
DB77	Max bombs
DB78	Max arrows
DB80 - DB84	File 1 Name
DB85 - DB89	File 2 Name
DB8A - DB8E	File 3 Name
DB95 - DB96	Game status Each pair of bytes tells you which screen/part of the game is currently loaded. 0003 - 000A : Intro Sequence 000B : Title Screen 0207 : File Select 0302 : File Name 0406 : Erase File 0504 : Copy File 0B07 : Normal Gameplay 0704 : Overworld Map 0604 : Save Menu
DBA6	File select cursor position (00 : File 1, 01 : File 2, 02 : File 3, 03 : ERASE/COPY)
DBA9	Position of cursor on lower screen when creating name
DBAA	Position of cursor on upper screen when creating name
DBAE	Your position on the 8x8 dungeon grid
DBD0	Quantity of keys in posession

Items Ids for "Inventory" and "Currently held items"

Id	Item
01	Sword
02	Bombs
03	Power bracelet
04	Shield
05	Bow
06	Hookshot
07	Fire rod
08	Pegasus boots
09	Ocarina
0A	Feather
0B	Shovel
0C	Magic powder
0D	Boomrang