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EarthBound/Map Data/Palette Pointer Table: Difference between revisions
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Latest revision as of 02:41, 24 January 2024
This is a sub-page of EarthBound/Map Data.
Palette Pointer Table | |
Game | EarthBound |
Start Address | 0x2F12FB |
End Address | 0x2F137A |
# of Entries | 32 |
Entry Length | 4 bytes (0x4) |
Total Length | 128 bytes (0x80) |
Back to the ROM map |
Table mapping between tileset numbers (from the Global_Tileset/Palette_Table) and map palettes for that tileset.
Format
Each entry is a (little-endian) SNES address pointer into the map palettes ($DA7CA7 or ROM offset 0x1A7EA7), representing the start of the block of palettes for a tileset. Entries are indexed by tileset number (from the Global_Tileset/Palette_Table), so the pointer for a particular tileset can be found using the formula palette_pointer_address = $ef10fb + tileset_number * 4
or palette_pointer_offset = 0x2f12fb + tileset_number * 4
. There are 32 valid tileset numbers, giving the Palette Pointer Table a total of 32 entries and 128 bytes.
Number of palettes per tileset
The number of palettes associated with each tileset varies, but because the pointer table points to a contiguous block of palettes, all in order by tileset, and each palette is a consistent 0xc0 bytes, the pointer table values can be used to determine the number of palettes associated with each tileset. The determination can be made using the formula num_palettes = (tileset_plus_one_table_pointer_value - tileset_table_pointer_value) / 0xc0
.
Note that, having no following entry, the number of palettes associate with tileset 31 cannot be determined in this manner. But it is known that tileset 31 has a full 8 palettes through observing the usage of those palettes in Magicant.
Tileset number | Tileset description | Num associated palettes |
---|---|---|
00 | Lost Underworld | 4 |
01 | Onett | 3 |
02 | Twoson | 4 |
03 | Threed | 2 |
04 | Fourside | 2 |
05 | Magicant | 4 |
06 | Outdoors | 7 |
07 | Summers | 1 |
08 | Dusty Dunes Desert | 2 |
09 | Dalaam | 6 |
10 | Indoors 1 | 8 |
11 | Indoors 1a | 8 |
12 | Indoors 1b | 8 |
13 | Winters | 4 |
14 | Indoors 1c | 8 |
15 | Indoors 1d | 8 |
16 | Indoors 1e | 4 |
17 | Indoors 1f | 8 |
18 | Scaraba | 1 |
19 | Indoors 4 | 7 |
20 | Stores 1 | 8 |
21 | Indoors 2 | 5 |
22 | Indoors 2a | 5 |
23 | Indoors 2b | 4 |
24 | Stores 2 | 5 |
25 | Indoors 3 | 8 |
26 | Caves 2 | 6 |
27 | Caves 1 | 5 |
28 | Caves 1a | 6 |
29 | Caves 1b | 6 |
30 | Caves 1c | 3 |
31 | Extra Palettes | 8 |