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Background

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A Background is a layer of tiles, mapped and possibly scrolled, that appears behind the sprite layer. The SNES supports up to four simultaneous backgrounds, conventionally named:

throughout the official Super Nintendo development manual.

Mode # of Layers Displayed Layer # of Tile Dots # of Tile Colors # of Palettes # of Colors Per Layer Function
0 max 4 BG1 8x8 4 8 32
BG2 or 4 8 32
BG3 16x16 4 8 32
BG4 4 8 32
1 max 3 BG1 16 8 128
BG2 16 8 128
BG3 4 8 32
2 max 2 BG1 16 8 128
BG2 16 8 128
3 max 2 BG1 256 1 256
BG2 16 8 128
4 max 2 BG1 256 1 256
BG2 4 8 32
5 max 2 BG1 16 8 128
BG2 4 8 32
6 1 BG1 16x8 16 8 128
7 1 BG1 8x8 256 1 256
EXT BG 1 BG1 8x8 128 1 128

Legend

① Horizontal/Vertical Scrolling (each layer)

② Horizontal/Vertical Flip (each tile)

Mosaic

④ Rotate, Enlarge, Shrink

⑤ Window Mask

⑥ Screen Addition/Subtraction

⑦ Fixed Color Addition/Subtraction

⑧ Color Window

Direct Color

⑩ Horizontal Pseudo 512

Offset Change Mode

Horizontal 512 Mode

Reference