SMW Memory Map
Misc.
Empty
Sprites
Player
Yoshi
Blocks
I/O
Graphics
Counter
Flag
Timer
Hardware mirror
Pointer
Palettes
Overworld
Camera
Should be 00
Misc.
ASM
Palette
Mario tilemap
Sprite tilemap related
Layer 3
Mario physics
Level data
Pointer
Mode 7 tilemap
Music
Sprite number
Debug
Sound effect
Timer
Graphics
Overworld border
Empty
Objects
Subroutine (JSx FIXME)
Sprite Subroutine (JSx FIXME)
Sprite Misc.
Coordinate
Level number
Controller
Overworld
Sprite physics
Stripe Image
Subroutine (JSR)
Subroutine (JSL)
Sprite subroutine (JSR)
Sprite subroutine (JSL)
SNES Register (PPU)
SNES Register (APU)
SNES Register (Hardware)
SNES Register (Controller)
SNES Register (DMA)
SA-1 Register (Write)
SA-1 Register (Read)
Super FX Register
MSU-1 Register (Read)
MSU-1 Register (Write)
Jump (JMP/JSR)
Jump (JML/JSL)
16-bit Pointer
24-bit Pointer
Opcode
Code
Table
Data
Hex Edit
Miscellaneous
Mario A
Mario B
Mario C
Backup
RAM Address
Length
Type
Description
Details
$7E0000
16 bytes
Misc.
Scratch RAM, is and can be used for a big number of purposes. The general purpose is temporarily preserving a value for later use in a routine.
Of note is the following address, used in LM ASM hacks:
$7E:0003 (16-bit) - Block number from LM Map16 editor. Also used in the custom Map16 tile change routine.