EarthBound Beginnings/Sprite data

This is a sub-page of EarthBound Beginnings.

Ally data
Game	EarthBound Zero
Start Address	2A010
End Address	2C00F
# of Entries	0x289
Entry Length	4 (0x4)
Total Length	8192 bytes (0x2000)
Back to the ROM map

This controls the sprites in the game.

Pointer

This starts with 0x289 pointers, which each correspond to one sprite:

• Bytes 0-1: Pointer
• Byte 2: PPU offset

  Each of the sprite's PPU tiles are offset by this amount, plus 0x18000 ($58010 in ROM)

• Byte 3: Attributes
  • Bits 0-1: Palette 1
  • Bits 2-3: Palette 2

  Multiply these numbers by 4, then add 0x29a2d to get the location of the palette in ROM

  • Bit 4: Unknown

  Set for the 4 main party members, and some other sprites

  • Bits 5-7: Unknown

  Only used on sprites 0x1df, 0x1e0 and 0x226

Sprite

This example uses the sprite data for Ninten forwards, located at 2ABAC-2ABBB:

10 20 10 02 18 20 10 03 10 28 11 10 18 28 11 11

Sprite are made up of 4 PPU tiles, each of which are four bytes in the sprite data, in order:

1. Top-right
2. Top-left
3. Bottom-right
4. Bottom-left

In this example, 10 20 10 02 is the top-right part of Ninten.

Tiles

Each 4 bytes is OAM:

• Byte 0: X location
• Byte 1: Y location
• Byte 2: Attributes
  • Bits 0-1: Palette
  • Bits 2-4: Unused
  • Bit 5: Priority (0=in front of background, 1=behind background)
  • Bit 6: Mirror X
  • Bit 7: Mirror Y
• Byte 3: PPU tile index

  The pointer's PPU offset is added to this value