WRAM Map

Address	Length	Type	Description
$7E0000	48 bytes	Misc.	Scratch RAM, used like "registers" for various operations
$7E0030	2 bytes	Timer	Frame counter
$7E0032	3 bytes	Pointer	Pointer to level object data
$7E0035	1 byte	Controller	Controller 1 Data 1, mirror of $7E093C
$7E0036	1 byte	Controller	Controller 1 Data 2, mirror of $7E093D
$7E0037	1 byte	Controller	Controller 1 Data 1 on press/first frame, mirror of $7E093E
$7E0038	1 byte	Controller	Controller 1 Data 2 on press/first frame, mirror of $7E093F
$7E0039	2 bytes	Misc.	Layer 1 Camera X
$7E003B	2 bytes	Misc.	Layer 1 Camera Y
$7E003D	2 bytes	Misc.	Layer 2 Camera X
$7E003F	2 bytes	Misc.	Layer 2 Camera Y
$7E0041	2 bytes	Misc.	Layer 3 Camera X (also for World Map)
$7E0043	2 bytes	Misc.	Layer 3 Camera Y
$7E0045	2 bytes	Misc.	Layer 4 Camera X
$7E0047	2 bytes	Misc.	Layer 4 Camera Y
$7E0049	4 bytes	Empty	Unused RAM, cleared (with $00) during every loading screen
$7E004D	2 bytes	Sound Effect	Music track to be played - mirror of hardware register $2140 (APU I/O 0)
$7E004F	2 bytes	Sound Effect	Previous value of $7E004D (if previous == current value of hardware register $2140, do not write to register)
$7E0051	2 bytes	Sound Effect	Mirror of hardware register $2141 (APU I/O 1, pseudo-noise loop)
$7E0053	2 bytes	Sound Effect	Sound ID to be played instantly, bypasses the sound queue, directly written to hardware register $2143
$7E0055	2 bytes	Sound Effect	Previous value of $7E0053 (if previous == current value in hardware register $2143, do not write to register)
$7E0057	2 bytes	Sound Effect	Current size of sound queue (capacity 7)
$7E0059	16 bytes	Sound Effect	Sound effect queue, NOT all sounds currently playing, but instead all sound ID's (1 byte per) to be submitted for play at the current time; each frame the queue index decrements, meaning at most one sound submitted per frame
$7E0069	2 bytes	Map	World Map: Layer 1 scroll Mirrored by $7E006D
$7E006B	2 bytes	Misc.	Yoshi's jump state, mirror of $7000C0
$7E006D	2 bytes	Map	World Map: Layer 2 scroll
$7E0072	2 bytes	Map	World Map: Current stage Yoshi sprite Y coordinate
$7E0073	2 bytes	Misc.	$0000: Camera is moving right $0002: Camera is moving left
$7E0075	2 bytes	Misc.	$0000: Camera moving down $0002: Camera moving up
$7E0076	2 bytes	Map	World Map: Current stage Yoshi sprite X coordinate
$7E0077	2 bytes	Misc.	Flag: A new column has been spawned in
$7E0079	2 bytes	Map	World Map: X Scroll destination
$7E0079	2 bytes	Misc.	Flag: A new row has been spawned in
$7E007B	2 bytes	Layer 1 Tilemap	VRAM foreground tilemap address of most recently loaded column
$7E007D	2 bytes	Layer 1 Tilemap	VRAM foreground tilemap address of most recently loaded row
$7E007F	2 bytes	Layer 1 Tilemap	7E007B + 1 (right half of column)
$7E0081	2 bytes	Layer 1 Tilemap	7E007D with $0400 bit flipped (even/odd counterpart of tilemap row)
$7E0083	2 bytes	Misc.	Negative camera X column of newly spawned row shifted to: 0000000000cccc00
$7E0085	2 bytes	Layer 1 Tilemap	7E007D + $20 (bottom half of row)
$7E0087	2 bytes	Misc.	Camera X column + 1 of newly spawned row, shifted to: 0000000000cccc00
$7E0089	2 bytes	Misc.	Game Over screen state: $0000: nothing $0002: fading in $0004: active $0006: option chosen $0008: load title screen
$7E0089	2 bytes	Layer 1 Tilemap	7E0081 + $20 (second part of even/odd counterpart of tilemap row)
$7E008B	2 bytes	Misc.	Most recently spawned row's Y coordinate
$7E0091	8 bytes	Misc.	Game Over screen: Letter rotation values (Y axis), 1 byte per letter, from right to left ('R', 'E', ... 'A', 'G')
$7E0099	8 bytes	Misc.	Game Over screen: Letter rotation values (X axis), 1 byte per letter, letters from right to left ('R', 'E', ... 'A', 'G')
$7E00A1	16 bytes	Misc.	Game Over screen: Letter X coordinates, 1 word per letter, from left to right ('G', 'A', .. 'E', 'R')
$7E00B1	16 bytes	Misc.	Game Over screen: Letter Y coordinates, 1 word per letter, from left to right ('G', 'A', .. 'E', 'R')
$7E00C1	2 bytes	Misc.	Game Over screen: Scale value (size) of letters
$7E00C3	2 bytes	Misc.	Game Over screen: Current option selected ($00 = yes, $02 = no)
$7E00C5	2 bytes	Misc.	Game Over screen: Rotational velocity of letters (both X and Y axes)
$7E00C8	2 bytes	Timer	Game Over screen: Frame timer (counts down) of waiting before letter rotation restarts
$7E00CA	2 bytes	Timer	Game Over screen: Frame timer (counts up until $0200) for how long to wait until options appear
$7E00CC	53 bytes	Empty	Unused RAM, cleared (with $00) during every loading screen
$7E0100	1 byte	Empty	This area never gets initialized or emptied.
$7E0101	15 bytes	ASM	Interrupt jumps: NMI jumps to $7E0108, IRQ to $7E010C Copy of $008140-$00814E
$7E0111	7 bytes	Empty	This area never gets initialized or emptied.
$7E0118	2 bytes	Misc.	Game Mode
$7E011B	1 byte	Misc.	Full Game Mode completion flag $00: Game Mode still running (set by NMI/IRQ) $FF: Game Mode complete (set by end of game loop)
$7E011C	1 byte	Misc.	NMI & IRQ Mode $00: Nintendo Logo $02: Normal Level Mode $04: Offset-per-tile Level Modes (1-7/6-4) $06: Island Scenes $08: Story Cutscene / Credits $0A: Mode 7 bosses (Hookbill/Raphael) $0C: World Map $0E: Bonus & Bandit Games
$7E011D	2 bytes	Misc.	Mirror of hardware register $210D (BG1 Horizontal Scroll); since this register is write-twice, this is the full 16-bit mirror, it will write $7E011D and then $7E011E
$7E011F	2 bytes	Coordinate	Mirror of hardware register $210E (BG1 Vertical Scroll); since this register is write-twice, this is the full 16-bit mirror, it will write $7E011F and then $7E0120
$7E0121	1 byte	Misc.	Flag for level loading with stage intro text ($02 if true)
$7E0125	1 byte	Misc.	IRQ Counter Expected values are 0 to 2
$7E0126	1 byte	ASM	Main IRQ Mode $00: Default $02: Story Cutscene $04: Credits $06: Bonus/Bandit Games
$7E012D	1 byte	Super FX	SCBR (register $3038) mirror, used by GSU init
$7E012E	1 byte	Super FX	SCMR (register $303A) mirror, used by GSU init
$7E0131	2 bytes	Timer	Island: Frame counter
$7E0134	2 bytes	Level Data	Level header: Background color
$7E0136	2 bytes	Level Data	Level header: BG1 Tileset
$7E0138	2 bytes	Level Data	Level header: BG1 Palette
$7E013A	2 bytes	Level Data	Level header: BG2 Tileset
$7E013C	2 bytes	Level Data	Level header: BG2 Palette
$7E013E	2 bytes	Level Data	Level header: BG3 Tileset
$7E0140	2 bytes	Level Data	Level header: BG3 Palette
$7E0142	2 bytes	Level Data	Level header: Sprite Tileset
$7E0144	2 bytes	Level Data	Level header: Sprite Palette
$7E0146	2 bytes	Level Data	Level header: Level Mode
$7E0148	2 bytes	Level Data	Level header: Animation Tileset
$7E014A	2 bytes	Level Data	Level header: Animation Palette
$7E014C	2 bytes	Level Data	Level header: Background Scrolling
$7E014E	2 bytes	Level Data	Level header: Music
$7E0150	2 bytes	Level Data	Level header: Item Memory
$7E0152	2 bytes	Level Data	Level header: Unused
$7E015F	161 bytes	ASM	Reserved area for stack. This area never gets initialized or emptied (even upon reset / power on).
$7E0200	1 byte	Misc.	Screen brightness: s000bbbb s = black if set b = brightness
$7E0201	1 byte	Misc.	Fade in/out mode $01 = fade out $00 = fade in
$7E0203	2 bytes	Misc.	Mirror of music level header + 1 Used as index for SPC block uploads
$7E0207	4 bytes	Music	SPC block indices that are currently loaded in ARAM
$7E0212	1 byte	Bonus Challenge	Bonus game ID: $00: FLIP CARDS $02: SCRATCH AND MATCH $04: DRAWING LOTS $06: MATCH CARDS $08: ROULETTE $0A: SLOT MACHINE
$7E0216	2 bytes	Cutscene	Flag: Final world unlocked
$7E0218	2 bytes	Misc.	Current world number (0000 = world 1, 0002 = world 2, etc.) NOTE: 000C isn't a world, but it's used in the final cinema sequence
$7E021A	2 bytes	Level Number	Current level number, NOTE: not translevel #, just the first level # loaded in from map
$7E0222	72 bytes	Map	Available tiles on map screen, one byte per level tile: $00: unavailable $01: beaten $80: current (grayed out)
$7E026A	78 bytes	Empty	Unused RAM, cleared (with $00) via DMA during reset as well as before and after Nintendo logo
$7E02B8	72 bytes	Map	Current level high scores to be displayed on world map (one byte per level tile)
$7E030E	1 byte	Misc.	Current save file loaded: $00: file 1 $02: file 2 $04: file 3
$7E030F	72 bytes	Map	Map screen tile graphics, 1-byte indices (local to current world loaded)
$7E0357	27 bytes	Pause Screen	Items in pause menu, one byte per ID: $00: free slot $01: +10 star $02: +20 star $03: POW $04: full egg $05: magnifying glass $06: star cloud $07: green melon $08: blue melon $09: red melon
$7E0372	2 bytes	Misc.	Tutorial message bitflags for 1-1 & 1-2: bfm00000 00000000, b=first loss of Baby Mario in 1-1, f=first Flower received in 1-1, m=first Middle Ring in 1-2
$7E0379	2 bytes	Misc.	Current number of lives, 999 maximum
$7E037B	2 bytes	Misc.	Current number of coins
$7E037D	2 bytes	Misc.	Number of deaths in the current level (not translevel), 999 maximum
$7E037F	2 bytes	Misc.	Number of 1up's collected in the current level (not translevel), 999 maximum
$7E0383	2 bytes	Sprite Palette	Current Yoshi color, set on level select (goal Yoshi reads this as well): $0000: Green $0001: Pink $0002: Yellow $0003: Light Blue $0004: Purple $0005: Brown $0006: Red $0007: Dark Blue
$7E0385	2 bytes	Bonus Challenge	Flag for bonus challenge for end of level. $0001 for no bonus. $FFFF for bonus.
$7E038C	2 bytes	Misc.	Flag: warp to a different screen rather than start of stage
$7E038E	2 bytes	Misc.	Current screen exit (index into screen exit data)
$7E0396	2 bytes	Misc.	Star count (*10) remaining to be auto-increased by (used by middle ring & items)
$7E0398	1 byte	Pause Screen	Item currently being used; same item indices as $7E0357
$7E039A	2 bytes	Pause Screen	Pause Item in continuous use. Set by items such as star counter and egg fill to act as a pause until item finished use. Cleared on item use.
$7E039C	1 byte	Timer	Frame counter during item use (after unpause)
$7E03A1	2 bytes	Misc.	first digit of star counter
$7E03A3	2 bytes	Misc.	second digit of star counter
$7E03A9	2 bytes	Timer	Frame counter for game modes $0D, $0E (during black cover sliding out), $0F, $10 (inside level, not score screen), and $11. Is paused during pause screen, and is reset upon entering stage and also upon star auto-increase (middle rings & +10 & +20 items).
$7E03AB	1 byte	Misc.	Flag: Star counter is below 9 (beeping/alarm sounds begin)
$7E03AC	2 bytes	Misc.	Flag: At least one middle ring has been used in current level (value will be number of middle rings used)
$7E03AE	2 bytes	Misc.	Flag: Boss has been visited before in current level, used to skip Kamek dialogue
$7E03B0	2 bytes	Misc.	Flag: Baby Bowser boss has been visited before in current level, used to skip Kamek introduction
$7E03B4	2 bytes	Misc.	Current number of red coins collected
$7E03B6	2 bytes	Misc.	Current star count * 10
$7E03B8	2 bytes	Misc.	Current number of flowers collected
$7E03BE	2 bytes	Level Data	Current Item Memory page (0-3)
$7E03C0	128 bytes	Level Data	Item Memory Page 0: Vertical bitplane, each word represents a horizontal line (0 = not collected, 1 = collected)
$7E0440	128 bytes	Level Data	Item Memory Page 1: Vertical bitplane, each word represents a horizontal line (0 = not collected, 1 = collected)
$7E04C0	128 bytes	Level Data	Item Memory Page 2: Vertical bitplane, each word represents a horizontal line (0 = not collected, 1 = collected)
$7E0540	128 bytes	Level Data	Item Memory Page 3: Vertical bitplane, each word represents a horizontal line (0 = not collected, 1 = collected)
$7E05C0	2 bytes	Player Physics	Current index into Yoshi delay buffers
$7E05C2	296 bytes	Player Physics	Yoshi X Coordinate delay buffer (2 bytes each): last 148 frames of where Yoshi's X was, used by egg inventory items to follow Yoshi
$7E06EA	296 bytes	Player Physics	Yoshi Y Coordinate delay buffer (2 bytes each): last 148 frames of where Yoshi's Y was, used by egg inventory items to follow Yoshi
$7E093C	1 byte	Controller	Controller 1 Data 1 (global): AXLR---- A = A; X = X; L = L; R = R
$7E093D	1 byte	Controller	Controller 1 Data 2 (global): byetUDLR b = B; y = Y; e = Select; t = Start; U = up; D = down; L = left, R = right
$7E093E	1 byte	Controller	Controller 1 Data 1, on press/first frame (global): AXLR---- A = A; X = X; L = L; R = R
$7E093F	1 byte	Controller	Controller 1 Data 2, on press/first frame (global): byetUDLR b = B; y = Y; e = Select; t = Start; U = up; D = down; L = left, R = right
$7E0940	1 byte	Controller	Controller 2 Data 1 (global): AXLR---- A = A; X = X; L = L; R = R
$7E0941	1 byte	Controller	Controller 2 Data 2 (global): byetUDLR b = B; y = Y; e = Select; t = Start; U = up; D = down; L = left, R = right
$7E0942	1 byte	Controller	Controller 2 Data 1, on press/first frame (global): AXLR---- A = A; X = X; L = L; R = R
$7E0943	1 byte	Controller	Controller 2 Data 2, on press/first frame (global): byetUDLR b = B; y = Y; e = Select; t = Start; U = up; D = down; L = left, R = right
$7E0944	1 byte	Controller	Previous frame controller 1 data 1 (what was previously in $7E093C), used for next frame's on press
$7E0945	1 byte	Controller	Previous frame controller 1 data 2 (what was previously in $7E093D), used for next frame's on press
$7E0946	1 byte	Controller	Previous frame controller 2 data 1 (what was previously in $7E0940), used for next frame's on press
$7E0947	1 byte	Controller	Previous frame controller 2 data 2 (what was previously in $7E0941), used for next frame's on press
$7E0948	2 bytes	Misc.	Word that stores each color channel's fixed color data intensity (mirror of $2132 for each channel): 0bbbbbgg gggrrrrr b = blue channel intensity g = green channel intensity r = red channel intensity
$7E094A	1 byte	Misc.	Mirror of hardware register $420C
$7E094B	1 byte	Misc.	Mirror of hardware register $2101
$7E094C	1 byte	Misc.	Mirror of hardware register $212A
$7E094D	1 byte	Misc.	Mirror of hardware register $212B
$7E094E	1 byte	Misc.	Mirror of hardware register M7SEL ($211A)
$7E094F	2 bytes	Misc.	Mirror of hardware register M7A ($211B)
$7E0951	2 bytes	Misc.	Mirror of hardware register M7B ($211C)
$7E0953	2 bytes	Misc.	Mirror of hardware register M7C ($211D)
$7E0955	2 bytes	Misc.	Mirror of hardware register M7D ($211E)
$7E0957	2 bytes	Misc.	Mirror of hardware register M7X ($211F)
$7E0959	2 bytes	Misc.	Mirror of hardware register M7Y ($2120)
$7E095B	1 byte	Misc.	Mirror of hardware register $2106
$7E095E	1 byte	Misc.	Mirror of hardware register $2105
$7E095F	1 byte	Misc.	Mirror of hardware register $2107
$7E0960	1 byte	Misc.	Mirror of hardware register $2108
$7E0961	1 byte	Misc.	Mirror of hardware register $2109
$7E0962	1 byte	Misc.	Mirror of hardware register $210B
$7E0963	1 byte	Misc.	Mirror of hardware register $210C
$7E0964	1 byte	Misc.	Mirror of hardware register $2123
$7E0965	1 byte	Misc.	Mirror of hardware register $2124
$7E0966	1 byte	Misc.	Mirror of hardware register $2125
$7E0967	1 byte	Misc.	Mirror of hardware register $212C
$7E0968	1 byte	Misc.	Mirror of hardware register $212D
$7E0969	1 byte	Misc.	Mirror of hardware register $212E
$7E096A	1 byte	Misc.	Mirror of hardware register $212F
$7E096B	1 byte	Misc.	Mirror of hardware register $2130
$7E096C	1 byte	Misc.	Mirror of hardware register $2131
$7E0980	1 byte	Timer	Timer for updating Title Screen animation frames (title wavy effect, island rotating, sprite moving, etc). Each animation frame takes 4 frames to update.
$7E0B0F	1 byte	Pause Screen	Pause state: $00: unpaused $01-12: pause transition states $13: in pause menu $14: begin unpausing
$7E0B10	1 byte	Pause Screen	Flag for pause screen active - instantly turns on when pause pressed, instantly turns off when unpause pressed
$7E0B48	2 bytes	Pause Screen	Flag that indicates whether or not menu items are disabled.
$7E0B4C	2 bytes	Misc.	Screen X position of black curtain during player death scene; when it reaches $0400, it resets to $0000 and the Retry screen appears
$7E0B55	2 bytes	Timer	Mosaic Timer, and one of the many "game frozen" flags: gets set to $10 when touching a fuzzy and counts down once per frame. Controls the mosaic effect (mirrors $7E095B)
$7E0B67	2 bytes	Timer	Tileset Animation Timer Different usage per mode
$7E0B7D	2 bytes	Timer	Idle frame counter; on >= $60 star counter is displayed
$7E0B7F	2 bytes	Misc.	Frame counter for how long to display the star counter (right after counter changes)
$7E0B81	1 byte	Misc.	Star counter position: $00 = left side, $01 = right side
$7E0B91	96 bytes	Sprite Number	24 2-word entries, one sprite per: Word 1: Sprite ID for sprite to turn into when sprite state is $0006 Word 2: Unused Special Case: Goal Ring uses Word 1 and 2 as a timer
$7E0C04	8 bytes	Sprite Number	Table of all current special sprites' ID's, 4 word-sized entries. $0000 is used as "none"; anything else is assumed to be an ID. Special sprite ID is a relative ID computed by: (sprite ID) - $01B9
$7E0C1C	2 bytes	Misc.	Current autoscroll special sprite ID, 0 means no autoscroll active
$7E0C1E	2 bytes	Misc.	Flag: Autoscrolling currently active for camera X
$7E0C20	2 bytes	Misc.	Flag: Autoscrolling currently active for camera Y (1-E and 6-8 flag this off)
$7E0C22	4 bytes	Misc.	Current autoscroll camera X value
$7E0C26	4 bytes	Misc.	Current autoscroll camera Y value
$7E0C2A	2 bytes	Misc.	Current autoscroll X velocity
$7E0C2C	2 bytes	Misc.	Current autoscroll Y velocity
$7E0C2E	2 bytes	Misc.	Current autoscroll checkpoint (index into autoscroller_values table)
$7E0C30	2 bytes	Misc.	Next autoscroll checkpoint X value
$7E0C32	2 bytes	Misc.	Next autoscroll checkpoint Y value
$7E0C34	2 bytes	Misc.	Next autoscroll checkpoint speed value
$7E0C36	2 bytes	Misc.	Autoscroll: next checkpoint X - current camera X (how much is left to go)
$7E0C38	2 bytes	Misc.	Autoscroll: next checkpoint Y - current camera Y (how much is left to go)
$7E0C3A	2 bytes	Misc.	Flag: Currently active gusty generation
$7E0C3C	2 bytes	Misc.	Flag: Currently active Lakitu (at least 1)
$7E0C3E	2 bytes	Misc.	Flag: Currently active fuzzy generation
$7E0C44	2 bytes	Misc.	Previous camera X value used by fuzzy generator
$7E0C46	2 bytes	Misc.	Flag: Currently active Poochy
$7E0C48	2 bytes	Misc.	Flag: Currently active bat generation
$7E0C4A	2 bytes	Misc.	Current generated bat count
$7E0C4C	2 bytes	Misc.	Flag: Currently active unknown special sprite
$7E0C68	2 bytes	Misc.	Flag: Currently active Fire Lakitu (at least 1)
$7E0C6A	2 bytes	Misc.	Flag: Currently active Flutter generation
$7E0C6E	2 bytes	Misc.	Flag: Currently active Nipper Spore generation
$7E0C70	2 bytes	Misc.	Flag: Currently active balloon with pokey ball generation
$7E0C72	2 bytes	Misc.	Flag: Currently active balloon with missile generation
$7E0C74	2 bytes	Misc.	Flag: Currently active balloon generation
$7E0C76	2 bytes	Misc.	Flag: Currently active yellow platform generation
$7E0C78	2 bytes	Misc.	Flag: Currently active Slime Drop generation
$7E0C7C	2 bytes	Misc.	Flag: Currently active unknown special sprite 3
$7E0C7E	2 bytes	Misc.	Flag: Currently active unknown special sprite 4
$7E0C80	2 bytes	Player Physics	Tongue X position, relative to Yoshi
$7E0C82	2 bytes	Player Physics	Tongue Y position, relative to Yoshi
$7E0C98	24 bytes	Sprite Number	Sprite table, 24 entries, one byte per: A copy of all sprites' states during camera events. Used as flags to not despawn sprites during camera events (like stairs)
$7E0CB0	2 bytes	Misc.	Camera Y offset from shaking (either large or small)
$7E0CEC	2 bytes	Timer	! switch timer, starts off at $0280, counts down
$7E0CFD	2 bytes	Misc.	Timer for offset-by-tile level modes Controls for example moving platforms in 6-4
$7E0CFF	2 bytes	Misc.	Amplitude of fuzzy offset-per-tile sinewave
$7E0D01	2 bytes	Misc.	Positional offset of fuzzy offset-per-tile sinewave
$7E0D03	2 bytes	Timer	Current time value for fuzzy palette morphing effect
$7E0D09	2 bytes	Misc.	Background gradient Y scroll, lower part
$7E0D0B	2 bytes	Misc.	Background gradient Y scroll, upper part
$7E0D0F	1 byte	Misc.	Message box state: $00: no message box $01: init $03: black box growing (opening) $05: init message $07: message fading in (from black) $09: opened, player reading $0B: message fading out (to black) $0D: black box shrinking (closing)
$7E0D19	2 bytes	Misc.	Message Box: size of transitional black square as it grows
$7E0D21	6 bytes	Misc.	During stage clear transition/wipe, rectangle mask's screen coordinates: Word 1: left X (low byte), right X (high byte); Word 2: top Y Word 3: bottom Y
$7E0D37	2 bytes	Misc.	Background wave effect (fuzzy): amplitude of horizontal wave
$7E0D39	2 bytes	Misc.	Background wave effect (fuzzy): amplitude of vertical wave
$7E0DAE	2 bytes	Timer	Frame counter for holding up while on ground, used for Baby Mario's animation frame, increments by 2 when holding but then on release decays by halving each frame
$7E0DB0	2 bytes	Timer	Frame counter for holding down while on ground, used for Baby Mario's animation frame, increments by 2 when holding but then on release decays by halving each frame
$7E0E2F	1 byte	Misc.	4 Red Toadies: counter of how many have grabbed Baby Mario
$7E0E31	1 byte	Misc.	4 Red Toadies: counter of how many are currently active/spawned
$7E0E33	1 byte	Misc.	4 Red Toadies: Currently active (at least one)
$7E0E37	16 bytes	Coordinate	4 Red Toadies: Each Toadie's X positions (4 total) relative to the 4 Toadies base sprite, one toadie per entry: Byte 1: Subpixel Byte 2: Position Byte 3: Screen # Byte 4: Spillage from carry add for screen
$7E0E49	16 bytes	Coordinate	4 Red Toadies: Each Toadie's Y positions (4 total) relative to the 4 Toadies base sprite, one toadie per entry: Byte 1: Subpixel Byte 2: Position Byte 3: Screen # Byte 4: Spillage from carry add for screen
$7E0FBD	2 bytes	Timer	Mirror of $701974 (frame counter) only when Green spiked platform (sprites $15F) is active.
$7E0FBF	2 bytes	Timer	Mirror of $701974 (frame counter) only when Red spiked platform (sprite $160) is active.
$7E105C	1 byte	Boss	Raphael the Raven: Y coordinate (relative to moon surface)
$7E105D	1 byte	Boss	Raphael the Raven: X coordinate (relative to wrapping around moon)
$7E105E	2 bytes	Boss	Bigger Boo: scale Raphael the Raven $7E105E: how far Yoshi is from Raphael (X coordinate around moon) Raphael the Raven $7E105F: current AI state ($00 - $14)
$7E1060	1 byte	Timer	Raphael the Raven: timer value - used to control timings of AI events. Decrements each frame, gets reset to either random values or specific values on state changes.
$7E1062	1 byte	Boss	Raphael the Raven: Facing - $00 for counterclockwise, $02 for clockwise; Baby Bowser: hit counter, fight ends when the low byte reaches $03 (or any value from $03 to $82).
$7E1066	1 byte	Boss	Bigger Boo: flag for taking damage (growing)
$7E1068	2 bytes	Boss	Big Bowser: Z coordinate (depth)
$7E106C	2 bytes	Boss	Big Bowser: horizontal position. Raphael the Raven: Y velocity
$7E1070	2 bytes	Boss	Big Bowser: index for summoning boulders, increments by 2 each boulder, ending in $0008 in the first summon and $000E in the second.
$7E1074	2 bytes	Boss	Big Bowser: flag indicating he is being hit by an egg right now, instantly clears
$7E1076	2 bytes	Boss	Hookbill: graphics scaling value (X axis) Bowser: damage counter, fight ends at $0007
$7E1078	2 bytes	Boss	Hookbill: graphics scaling value (Y axis)
$7E1082	2 bytes	Boss	Naval Piranha: health, starts with #$0003, dies on #$0000
$7E10DA	2 bytes	Player Physics	Debug flag for free Yoshi movement
$7E1109	1 byte	Coordinate	World Map: Cursor X-position
$7E110A	1 byte	Coordinate	World Map: Cursor Y-position
$7E110C	1 byte	Coordinate	World Map: Cursor next X-position to be reached
$7E110D	1 byte	Coordinate	World Map: Cursor next Y-position to be reached
$7E1112	1 byte	Level Number	World Map: current level/option slot. Sets the level index ($7E021A) if you select one.
$7E1117	1 byte	Map	World Map: Current World selected * 2. Sets the world number ($7E0218).
$7E11B6	2 bytes	Timer	Beginning story cutscene: Number of frames left (counts down) to display current text before fading out
$7E11B8	2 bytes	Misc.	Beginning story cutscene state: $01 = load next text (into fade in) $02 = fade in text $03 = display text (normal) $04 = load next text (into scroll) $05 = scroll down to next text part $06 = fade out text
$7E11BA	2 bytes	Misc.	Beginning story cutscene: Current text (index by 2's into $0FCD56)
$7E11BC	2 bytes	Misc.	Beginning story cutscene: BG4 tilemap VRAM destination (for DMA of text)
$7E11BE	576 bytes	Layer 4 Tilemap	Beginning story cutscene: All possible BG4 tilemap data (text), split into 64-byte chunks which are loaded into VRAM as new text comes in
$7E13FE	1 byte	Misc.	Beginning story cutscene: Current Y scroll destination (index by 2's into $0FCE90)
$7E1404	1 byte	Misc.	Beginning story cutscene: Frame timing for current scene/text shown (index into cutscene timer table $0FCEDB)
$7E1405	2 bytes	Timer	Frame timer (counts down) for beginning story cutscene and rotating island; upon 0, it will fade into the other one (endlessly switching until you load file select menu)
$7E1409	1488 bytes	Empty	Unused RAM, cleared (with $00) via DMA during reset as well as before and after Nintendo logo NOTE: There's a bug in level loading of Burts Boss room (only room?) where it will do an unintentional read of $7E15A5 (word sized) and use it as a tile. But it's never written to.
$7E1E00	832 bytes	Empty	Unused RAM, cleared (with $00) via DMA during reset as well as before and after Nintendo logo
$7E2340	7360 bytes	Empty	Unused RAM, cleared (with $00) via DMA during reset as well as before and after Nintendo logo
$7E4000	2 bytes	Misc. Tilemap	Bytes until next free entry in tilemap DMA queue
$7E4002	2046 bytes	Misc. Tilemap	Reserved area for VRAM tilemap DMA queue, processed every frame, split into variable-sized entries, let e = one entry: e[0:1]: xvvv vvvv vvvv vvvv x = End of queue marker v = VRAM destination/source address e[2:3]: vidt tttt tttt tttt t = transfer size - 1 (can also act as entry size) v = column transfer (32 byte increase if set, otherwise 1) i = Does a fixed transfer if set (init data) d = Direction, does a read of VRAM if set (otherwise write) if d == 1 (Read Tilemap): Read from VRAM address and write to destination e[4:6]: Long Destination address to write to if d == 0 and i == 0 (Write Tilemap): Write to VRAM address using data from entry e[4:t]: Data to DMA, size same as t if d == 0 and i == 1 (Init Tilemap): Write to VRAM address floodfill using data from entry e[4:5]: Word data to repeat t times (Queue size doesn't go beyond 182 bytes in vanilla game so roughly 1864 bytes of this are "free")
$7E4800	2 bytes	Pointer	Address of last entry in general-purpose DMA queue
$7E4802	2110 bytes	Misc.	Reserved area for general-purpose DMA queue, split into 12-byte entries, let e = one entry: e[0:1]: VRAM destination address e[2]: video port control e[3]: DMA control e[4]: DMA destination register e[5:7]: long source address e[8:9]: DMA size e[A:B]: address of next entry in queue (Doesn't go beyond $4999 in vanilla gameplay, so roughly 1700 bytes of this are "free")
$7E5040	420 bytes	Misc.	HDMA Table for BG3 Vertical scroll (register $2112), OR when OPT is enabled, writes to BG2 Horizontal scroll (register $210F) instead: 1 word entries from top of actual screen to bottom (minus black bars), representing each scanline
$7E51E4	420 bytes	Misc.	HDMA Table for BG3 Horizontal scroll (register $2111), OR when OPT is enabled, writes to BG2 Vertical scroll (register $2110) instead: 1 word entries from top of actual screen to bottom (minus black bars), representing each scanline
$7E56D0	840 bytes	Misc.	HDMA Table for Window 1 & 2 ($2126-$2129) 4 bytes per entry, from top of actual screen to bottom (minus black bars), representing each scanline: Byte 1: Window 1 Left Position Byte 2: Window 1 Right Position Byte 3: Window 2 Left Position Byte 4: Window 2 Right Position
$7E5A18	128 bytes	Misc.	HDMA Indirect Table 0, native SNES HDMA Indirect format, 3-byte entries: Byte: rccccccc r = repeat, c = scanline count Word: Source pointer
$7E5A98	128 bytes	Misc.	HDMA Indirect Table 1 (format)
$7E5B18	128 bytes	Misc.	HDMA Indirect Table 2 (format)
$7E5B98	128 bytes	Misc.	HDMA Indirect Table 3 (format) Default for Channel 4 (BG3 V-scroll (BG2 for OPT))
$7E5C18	128 bytes	Misc.	HDMA Indirect Table 4 (format) Commonly used for Channel 3 (BG3 H-scroll (BG2 for OPT))
$7E5C98	128 bytes	Misc.	HDMA Indirect Table 5 (format) Commonly used for Channel 2 (green & red channel of background gradient)
$7E5D18	128 bytes	Misc.	HDMA Indirect Table 6 (format) Commonly used for Channel 1 (blue channel of background gradient)
$7E5D98	2 bytes	Misc.	Number of bytes Yoshi's in-between level egg inventory items take up (# of items * 2)
$7E5D9A	12 bytes	Misc.	Egg inventory items stored in between levels (not current eggs), 6 words, each one is a sprite ID
$7E65A6	2048 bytes	Layer 1 Tilemap	BG1 left tilemap mirror used for cross section graphical masking effect (free RAM if not using cross section BG3 header $0A)
$7E6DA6	1024 bytes	Layer 1 Tilemap	BG1 right tilemap mirror used for cross section graphical masking effect (free RAM if not using cross section BG3 header $0A)
$7E71A6	1024 bytes	Layer 1 Tilemap	Overlap between $7E6DA6 and $7E75A6, both tilemaps are actually 2048 bytes and this acts as either one depending on when (free RAM if not using cross section BG3 header $0A)
$7E75A6	1024 bytes	Layer 3 Tilemap	BG3 tilemap mirror (VRAM $3400) used for cross sections (free RAM if not using cross section BG3 header $0A)
$7EB8E2	1822 bytes	Empty	Unused RAM, cleared (with $00) via DMA during reset as well as before and after Nintendo logo
$7EC000	16384 bytes	ASM	Copy of $00C000-$00FFFF (Code is never executed with the data bank as $00 for this range; it's always $7E)
$7F0000	22238 bytes	Empty	Unused RAM, cleared (with $00) via DMA during reset as well as before and after Nintendo logo
$7F56DE	438 bytes	Object Palette	Blue channel of background gradient ($2132 COLDATA) Covers entire sublevel (NOT just screen) from top to bottom, one byte per entry, representing every eighth X pixel row in sublevel
$7F5894	876 bytes	Object Palette	Green & Red channel of background gradient ($2132 COLDATA) Covers entire sublevel (NOT just screen) from top to bottom, two bytes per entry, representing every eighth X pixel row in sublevel: Byte 1: Green Channel Byte 2: Red channel
$7F7E00	512 bytes	Level Data	All screen exit data for current level, in screen region order ($00-$7F), 4 bytes per exit: LLLLLLLL XXXXXXXX YYYYYYYY EEEEEEEE L = Destination Level (between 00 and DD) X = Destination X-Coordinate Y = Destination Y-Coordinate E = Destination Entrance Type (this follows the same format as $7000AC, Yoshi state)
$7F8000	32768 bytes	Layer 1 Tilemap	Table that holds all foreground MAP16 tile data for the entire sublevel currently loaded. Split up by screen ID's then further into row-major tile #. Data is word-sized MAP16 indices.