YI Memory Map - SMW Central

Link

Address
Hexadecimal number for a partial address. 6-digit number for a full address. Use - to denote a range. Use , to list more than one address.

Length

Type
Enable JavaScript to use multiple regions.

Region
Hold control to select multiple. Check "All" to select all at once.

All

Type

Description
Separate each individual keyword with spaces. Surround a phrase with quotes to look for the exact phrase, or with / to use a PCRE regular expression. Prepend with - to exclude a keyword or phrase, with + to require a whole word or phrase, or with -+ to exclude a whole word or phrase. ? matches any character, * matches any amount of characters.

$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. You can find the list of valid values here.

$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

$7E012F

1 byte

Debug

(Used by debug routine at $0080F8) Frame advance flag: #$00 = disable frame advance, #$01 = enable frame advance

$7E0130

1 byte

Debug

(Used by debug routine at $0080F8) Frame advance timer: When L or R is pressed on Controller 2 and frame advance flag at $012F is set, skips game mode code and decrements once per frame until it reaches 0, then next frame runs game mode code for one frame.
Cleared when frame advance flag is set and neither L nor R is pressed on Controller 2.

$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)

$7E0394

2 bytes

Timer

Counter between ticks for star increase when stars are under 10

$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