def write_background_data_to_rom(self, rom):
# Write the background tileset data
block_size = self.bg_tileset.block_size(bpp=BG_TILESET_BPP)
with EbCompressibleBlock(block_size) as block:
self.bg_tileset.to_block(block=block, offset=0, bpp=BG_TILESET_BPP)
self._write_compressed_block(rom, block, BG_TILESET_POINTER)
# Write the background tile arrangement data
block_size = self.bg_arrangement.block_size()
with EbCompressibleBlock(block_size) as block:
self.bg_arrangement.to_block(block=block, offset=0)
self._write_compressed_block(rom, block, BG_ARRANGEMENT_POINTER)
# Write the background palette data
# There is an additional pointer to this location, so change that one
# too
block_size = self.bg_palette.block_size()
with EbCompressibleBlock(block_size) as block:
self.bg_palette.to_block(block=block, offset=0)
new_offset = self._write_compressed_block(rom, block,
BG_PALETTE_POINTER)
write_asm_pointer(block=rom,
offset=BG_PALETTE_POINTER_SECONDARY,
pointer=to_snes_address(new_offset))
# Write the background animated palette data
block_size = self.bg_anim_palette.block_size()
with EbCompressibleBlock(block_size) as block:
self.bg_anim_palette.to_block(block=block, offset=0)
self._write_compressed_block(rom, block, BG_ANIM_PALETTE_POINTER)
def to_block(self, block):
with EbCompressibleBlock(
self.graphics.block_size(bpp=self.bpp)) as compressed_block:
self.graphics.to_block(block=compressed_block,
offset=0,
bpp=self.bpp)
compressed_block.compress()
graphics_offset = block.allocate(data=compressed_block)
if self.arrangement:
with EbCompressibleBlock(
self.arrangement.block_size()) as compressed_block:
self.arrangement.to_block(block=compressed_block, offset=0)
compressed_block.compress()
arrangement_offset = block.allocate(data=compressed_block)
else:
arrangement_offset = None
palette_offsets = []
for i, palette in enumerate(self.palettes):
with EbCompressibleBlock(palette.block_size()) as compressed_block:
palette.to_block(block=compressed_block, offset=0)
if self.compressed_palettes:
compressed_block.compress()
palette_offset = block.allocate(data=compressed_block)
palette_offsets.append(palette_offset)
return graphics_offset, arrangement_offset, palette_offsets
def write_to_rom(self, rom):
graphics_1_block_size = self.graphics_1.block_size(bpp=2)
with EbCompressibleBlock(graphics_1_block_size) as compressed_block:
self.graphics_1.to_block(block=compressed_block, offset=0, bpp=2)
compressed_block.compress()
graphics_1_offset = rom.allocate(data=compressed_block)
write_asm_pointer(block=rom, offset=GRAPHICS_1_ASM_POINTER_OFFSET,
pointer=to_snes_address(graphics_1_offset))
graphics_2_block_size = self.graphics_2.block_size(bpp=2)
with EbCompressibleBlock(graphics_2_block_size) as compressed_block:
self.graphics_2.to_block(block=compressed_block, offset=0, bpp=2)
compressed_block.compress()
graphics_2_offset = rom.allocate(data=compressed_block)
write_asm_pointer(block=rom, offset=GRAPHICS_2_ASM_POINTER_OFFSET,
pointer=to_snes_address(graphics_2_offset))
# Write palettes
offset = FLAVOR_PALETTES_OFFSET
for palette in self.flavor_palettes:
palette.to_block(block=rom, offset=offset)
offset += 64
# Write names
for asm_pointer_offset in FLAVOR_NAME_ASM_POINTER_OFFSETS:
name = self.flavor_names[asm_pointer_offset]
offset = rom.allocate(size=FLAVOR_NAME_ENTRY.size)
FLAVOR_NAME_ENTRY.to_block(block=rom, offset=offset, value=name)
write_asm_pointer(block=rom, offset=asm_pointer_offset, pointer=to_snes_address(offset))
def read_background_data_from_rom(self, rom):
with EbCompressibleBlock() as block:
# Read the background tileset data
self._decompress_block(rom, block, BG_TILESET_POINTER)
self.bg_tileset.from_block(
block=block, offset=0, bpp=BG_TILESET_BPP
)
# Read the background tile arrangement data
self._decompress_block(rom, block, BG_ARRANGEMENT_POINTER)
self.bg_arrangement.from_block(block=block, offset=0)
# Read the background palette data
# The decompressed data is smaller than the expected value,
# so it is extended with black entries.
self._decompress_block(rom, block, BG_PALETTE_POINTER)
block.from_array(
block.to_array() + [0]*(BG_SUBPALETTE_LENGTH*2 - len(block))
)
self.bg_palette.from_block(block=block, offset=0)
# Read the background animated palette data
# Each subpalette corresponds to an animation frame.
self._decompress_block(rom, block, BG_ANIM_PALETTE_POINTER)
self.bg_anim_palette.from_block(block=block, offset=0)
def read_from_rom(self, rom):
with EbCompressibleBlock() as block:
# Read the tileset data
block.from_compressed_block(
block=rom, offset=from_snes_address(
read_asm_pointer(rom, TILESET_POINTER)
)
)
self.tileset.from_block(block=block, offset=0, bpp=TILESET_BPP)
# Read the arrangement data
block.from_compressed_block(
block=rom, offset=from_snes_address(
read_asm_pointer(rom, ARRANGEMENT_POINTER)
)
)
self.arrangement.from_block(block=block, offset=0)
# Read the palette data
block.from_compressed_block(
block=rom, offset=from_snes_address(
read_asm_pointer(rom, PALETTE_POINTER)
)
)
self.palette.from_block(block=block, offset=0)
def write_to_rom(self, rom):
self.enemy_config_table.to_block(
block=rom,
offset=from_snes_address(ENEMY_CONFIGURATION_TABLE_DEFAULT_OFFSET))
self.enemy_group_bg_table.to_block(
block=rom,
offset=from_snes_address(
ENEMY_GROUP_BACKGROUND_TABLE_DEFAULT_OFFSET))
# Write the sprites
self.graphics_pointer_table.recreate(num_rows=len(self.battle_sprites))
for i, battle_sprite in enumerate(self.battle_sprites):
self.graphics_pointer_table[i] = [None, battle_sprite.size()]
with EbCompressibleBlock(
size=battle_sprite.block_size()) as compressed_block:
battle_sprite.to_block(block=compressed_block, offset=0)
compressed_block.compress()
graphics_offset = rom.allocate(data=compressed_block)
self.graphics_pointer_table[i][0] = to_snes_address(
graphics_offset)
graphics_pointer_table_offset = rom.allocate(
size=self.graphics_pointer_table.size)
self.graphics_pointer_table.to_block(
block=rom, offset=graphics_pointer_table_offset)
write_asm_pointer(
block=rom,
offset=GRAPHICS_POINTER_TABLE_ASM_POINTER_OFFSET,
pointer=to_snes_address(graphics_pointer_table_offset))
for pointer_offset in GRAPHICS_POINTER_TABLE_POINTER_OFFSETS:
rom.write_multi(
pointer_offset,
item=to_snes_address(graphics_pointer_table_offset),
size=3)
# Write the palettes
if self.palettes:
palettes_offset = rom.allocate(size=self.palettes[0].block_size() *
len(self.palettes))
write_asm_pointer(block=rom,
offset=PALETTES_ASM_POINTER_OFFSET,
pointer=to_snes_address(palettes_offset))
for palette in self.palettes:
palette.to_block(block=rom, offset=palettes_offset)
palettes_offset += palette.block_size()
# Write the groups
for i, group in enumerate(self.enemy_groups):
offset = rom.allocate(
size=(len(group) * EnemyGroupTableEntry.size + 1))
self.enemy_group_table[i][0] = to_snes_address(offset)
for group_entry in group:
EnemyGroupTableEntry.to_block(block=rom,
offset=offset,
value=group_entry)
offset += EnemyGroupTableEntry.size
rom[offset] = 0xff
self.enemy_group_table.to_block(
block=rom,
offset=from_snes_address(ENEMY_GROUP_TABLE_DEFAULT_OFFSET))
def to_block(self, block, tileset_asm_pointer_offset, palette_offset):
tileset_block_size = self.tileset.block_size(bpp=2)
with EbCompressibleBlock(tileset_block_size) as compressed_block:
self.tileset.to_block(block=compressed_block, offset=0, bpp=2)
compressed_block.compress()
tileset_offset = block.allocate(data=compressed_block)
write_asm_pointer(block=block, offset=tileset_asm_pointer_offset, pointer=to_snes_address(tileset_offset))
self.palette.to_block(block=block, offset=palette_offset)
def from_block(self, block, offset):
with EbCompressibleBlock() as compressed_block:
compressed_block.from_compressed_block(block=block, offset=offset)
self.palettes[0].from_block(block=compressed_block, offset=0)
self.arrangement.from_block(block=compressed_block, offset=self.palettes[0].block_size())
self.graphics.from_block(block=compressed_block,
offset=self.palettes[0].block_size() + 2048,
bpp=self.bpp)
def from_block(self, block, graphics_offset, arrangement_offset, palette_offsets):
with EbCompressibleBlock() as compressed_block:
compressed_block.from_compressed_block(block=block, offset=graphics_offset)
self.graphics.from_block(block=compressed_block, offset=0, bpp=self.bpp)
if self.arrangement:
with EbCompressibleBlock() as compressed_block:
compressed_block.from_compressed_block(block=block, offset=arrangement_offset)
self.arrangement.from_block(block=compressed_block, offset=0)
for i, palette_offset in enumerate(palette_offsets):
if self.compressed_palettes:
with EbCompressibleBlock() as compressed_block:
compressed_block.from_compressed_block(block=block, offset=palette_offset)
self.palettes[i].from_block(block=compressed_block, offset=0)
else:
self.palettes[i].from_block(block=block, offset=palette_offset)
def read_from_rom(self, rom):
graphics_offset = from_snes_address(
read_asm_pointer(block=rom, offset=GRAPHICS_ASM_POINTER_OFFSET))
with EbCompressibleBlock() as compressed_block:
compressed_block.from_compressed_block(block=rom,
offset=graphics_offset)
self.tileset.from_block(block=compressed_block, bpp=4)
self.palette.from_block(block=rom, offset=PALETTE_OFFSET)
def from_block(self, block, tileset_asm_pointer_offset, palette_offset):
with EbCompressibleBlock() as compressed_block:
compressed_block.from_compressed_block(
block=block,
offset=from_snes_address(
read_asm_pointer(block=block,
offset=tileset_asm_pointer_offset)))
self.tileset.from_block(block=compressed_block, bpp=2)
self.palette.from_block(block=block, offset=palette_offset)
def write_to_rom(self, rom):
# Write the tileset data
block_size = self.tileset.block_size(bpp=TILESET_BPP)
with EbCompressibleBlock(block_size) as block:
self.tileset.to_block(block=block, offset=0, bpp=TILESET_BPP)
self._write_compressed_block(rom, block, TILESET_POINTER)
# Write the tile arrangement data
block_size = self.arrangement.block_size()
with EbCompressibleBlock(block_size) as block:
self.arrangement.to_block(block=block, offset=0)
self._write_compressed_block(rom, block, ARRANGEMENT_POINTER)
# Write the palette data
block_size = self.palette.block_size()
with EbCompressibleBlock(block_size) as block:
self.palette.to_block(block=block, offset=0)
self._write_compressed_block(rom, block, PALETTE_POINTER)
def arrangements_to_block(self, block):
with EbCompressibleBlock(1024 * 16 * 2) as compressed_block:
i = 0
for arrangement in self.arrangements:
for y in range(4):
for x in range(4):
compressed_block.write_multi(key=i, item=arrangement[y][x], size=2)
i += 2
compressed_block.compress()
return block.allocate(data=compressed_block)
def write_to_rom(self, rom):
tileset_block_size = self.tileset.block_size(bpp=4)
with EbCompressibleBlock(tileset_block_size) as compressed_block:
self.tileset.to_block(block=compressed_block, offset=0, bpp=4)
compressed_block.compress()
tileset_offset = rom.allocate(data=compressed_block)
write_asm_pointer(block=rom,
offset=GRAPHICS_ASM_POINTER_OFFSET,
pointer=to_snes_address(tileset_offset))
self.palette.to_block(block=rom, offset=PALETTE_OFFSET)
def to_block(self, rom):
# Arrangement space is 2048 bytes long since it's 32x32x2 in VRAM
with EbCompressibleBlock(size=self.palettes[0].block_size() + 2048 + self.graphics.block_size(bpp=self.bpp)) \
as compressed_block:
self.palettes[0].to_block(block=compressed_block, offset=0)
self.arrangement.to_block(block=compressed_block, offset=self.palettes[0].block_size())
self.graphics.to_block(block=compressed_block,
offset=self.palettes[0].block_size() + 2048,
bpp=self.bpp)
compressed_block.compress()
return rom.allocate(data=compressed_block)
def write_chars_data_to_rom(self, rom):
# Write the characters tileset data
block_size = self.chars_tileset.block_size(bpp=CHARS_TILESET_BPP)
with EbCompressibleBlock(block_size) as block:
self.chars_tileset.to_block(block=block,
offset=0,
bpp=CHARS_TILESET_BPP)
self._write_compressed_block(rom, block, CHARS_TILESET_POINTER)
# Write the characters palette data
block_size = self.chars_palette.block_size()
with EbCompressibleBlock(block_size) as block:
self.chars_palette.to_block(block=block, offset=0)
self._write_compressed_block(rom, block, CHARS_PALETTE_POINTER)
# Write the characters animation palette data
block_size = self.chars_anim_palette.block_size()
with EbCompressibleBlock(block_size) as block:
self.chars_anim_palette.to_block(block=block, offset=0)
self._write_compressed_block(rom, block,
CHARS_ANIM_PALETTE_POINTER)
def arrangements_from_block(self, block, offset):
with EbCompressibleBlock() as compressed_block:
compressed_block.from_compressed_block(block=block, offset=offset)
num_arrangements = len(compressed_block) // 32
j = 0
for i in range(num_arrangements):
arrangement = [[0 for x in range(4)] for y in range(4)]
for y in range(4):
for x in range(4):
arrangement[y][x] = compressed_block.read_multi(key=j, size=2)
j += 2
self.arrangements[i] = arrangement
def from_block(self, block, offset):
with EbCompressibleBlock() as compressed_block:
compressed_block.from_compressed_block(block=block, offset=offset)
self.graphics.from_block(block=compressed_block,
offset=0,
bpp=TILE_BPP)
next_offset = self.graphics_data_size
self.palette.from_block(block=compressed_block, offset=next_offset)
next_offset += self.palette.block_size()
for arrangement in self.arrangements:
arrangement.from_block(block=compressed_block,
offset=next_offset)
next_offset += arrangement.block_size()
def read_from_rom(self, rom):
with EbCompressibleBlock() as compressed_block:
compressed_block.from_compressed_block(
block=rom,
offset=from_snes_address(read_asm_pointer(rom, GRAPHICS_1_ASM_POINTER_OFFSET)))
self.graphics_1.from_block(block=compressed_block, bpp=2)
with EbCompressibleBlock() as compressed_block:
compressed_block.from_compressed_block(
block=rom,
offset=from_snes_address(read_asm_pointer(rom, GRAPHICS_2_ASM_POINTER_OFFSET)))
self.graphics_2.from_block(block=compressed_block, bpp=2)
# Read palettes
offset = FLAVOR_PALETTES_OFFSET
for palette in self.flavor_palettes:
palette.from_block(block=rom, offset=offset)
offset += 64
# Read names
for asm_pointer_offset in FLAVOR_NAME_ASM_POINTER_OFFSETS:
self.flavor_names[asm_pointer_offset] = FLAVOR_NAME_ENTRY.from_block(
block=rom,
offset=from_snes_address(read_asm_pointer(block=rom, offset=asm_pointer_offset)))
def read_chars_data_from_rom(self, rom):
with EbCompressibleBlock() as block:
# Read the characters tileset data
self._decompress_block(rom, block, CHARS_TILESET_POINTER)
self.chars_tileset.from_block(block=block,
offset=0,
bpp=CHARS_TILESET_BPP)
# Read the characters palette data
self._decompress_block(rom, block, CHARS_PALETTE_POINTER)
self.chars_palette.from_block(block=block, offset=0)
# Read the characters animated palette data
# Each subpalette corresponds to an animation frame.
self._decompress_block(rom, block, CHARS_ANIM_PALETTE_POINTER)
self.chars_anim_palette.from_block(block=block, offset=0)
def read_from_rom(self, rom):
self.enemy_config_table.from_block(block=rom,
offset=from_snes_address(ENEMY_CONFIGURATION_TABLE_DEFAULT_OFFSET))
self.enemy_group_bg_table.from_block(block=rom,
offset=from_snes_address(ENEMY_GROUP_BACKGROUND_TABLE_DEFAULT_OFFSET))
# Read the sprites
log.debug("Reading battle sprites")
self.graphics_pointer_table.from_block(
rom, from_snes_address(read_asm_pointer(block=rom, offset=GRAPHICS_POINTER_TABLE_ASM_POINTER_OFFSET)))
self.battle_sprites = []
for i in range(self.graphics_pointer_table.num_rows):
with EbCompressibleBlock() as compressed_block:
compressed_block.from_compressed_block(
block=rom,
offset=from_snes_address(self.graphics_pointer_table[i][0]))
sprite = EbBattleSprite()
sprite.from_block(block=compressed_block, offset=0, size=self.graphics_pointer_table[i][1])
self.battle_sprites.append(sprite)
# Determine how many palettes there are
num_palettes = 0
for i in range(self.enemy_config_table.num_rows):
num_palettes = max(num_palettes, self.enemy_config_table[i][14])
num_palettes += 1
# Read the palettes
log.debug("Reading palettes")
palettes_offset = from_snes_address(read_asm_pointer(block=rom, offset=PALETTES_ASM_POINTER_OFFSET))
self.palettes = []
for i in range(num_palettes):
palette = EbPalette(num_subpalettes=1, subpalette_length=16)
palette.from_block(block=rom, offset=palettes_offset)
self.palettes.append(palette)
palettes_offset += palette.block_size()
# Read the groups
log.debug("Reading enemy groups")
self.enemy_group_table.from_block(rom, from_snes_address(ENEMY_GROUP_TABLE_DEFAULT_OFFSET))
self.enemy_groups = []
for i in range(self.enemy_group_table.num_rows):
group = []
group_offset = from_snes_address(self.enemy_group_table[i][0])
while rom[group_offset] != 0xff:
group.append(EnemyGroupTableEntry.from_block(block=rom, offset=group_offset))
group_offset += EnemyGroupTableEntry.size
self.enemy_groups.append(group)
def to_block(self, block):
self.graphics_data_size = self.graphics.block_size(bpp=TILE_BPP,
trimmed=True)
total_block_size = (self.graphics_data_size +
self.palette.block_size() +
sum(arrangement.block_size()
for arrangement in self.arrangements))
with EbCompressibleBlock(total_block_size) as compressed_block:
self.graphics.to_block(block=compressed_block,
offset=0,
bpp=TILE_BPP)
next_offset = self.graphics_data_size
self.palette.to_block(block=compressed_block, offset=next_offset)
next_offset += self.palette.block_size()
for arrangement in self.arrangements:
arrangement.to_block(block=compressed_block,
offset=next_offset)
next_offset += arrangement.block_size()
compressed_block.compress()
return block.allocate(data=compressed_block)
def minitiles_to_block(self, block):
with EbCompressibleBlock(
self.minitiles.block_size(bpp=4)) as compressed_block:
self.minitiles.to_block(block=compressed_block, offset=0, bpp=4)
compressed_block.compress()
return block.allocate(data=compressed_block)
def minitiles_from_block(self, block, offset):
with EbCompressibleBlock() as compressed_block:
compressed_block.from_compressed_block(block=block, offset=offset)
self.minitiles.from_block(block=compressed_block, bpp=4)
def write_to_rom(self, rom):
# Write the data table
self.bg_table.to_block(
block=rom, offset=from_snes_address(BACKGROUND_TABLE_OFFSET))
self.scroll_table.to_block(
block=rom, offset=from_snes_address(SCROLL_TABLE_OFFSET))
self.distortion_table.to_block(
block=rom, offset=from_snes_address(DISTORTION_TABLE_OFFSET))
# Write graphics and arrangements
self.graphics_pointer_table.recreate(num_rows=len(self.backgrounds))
self.arrangement_pointer_table.recreate(num_rows=len(self.backgrounds))
for i, (tileset, color_depth,
arrangement) in enumerate(self.backgrounds):
with EbCompressibleBlock(size=tileset.block_size(
bpp=color_depth)) as compressed_block:
tileset.to_block(block=compressed_block,
offset=0,
bpp=color_depth)
compressed_block.compress()
tileset_offset = rom.allocate(data=compressed_block)
self.graphics_pointer_table[i] = [
to_snes_address(tileset_offset)
]
with EbCompressibleBlock(
size=arrangement.block_size()) as compressed_block:
arrangement.to_block(block=compressed_block, offset=0)
compressed_block.compress()
arrangement_offset = rom.allocate(data=compressed_block)
self.arrangement_pointer_table[i] = [
to_snes_address(arrangement_offset)
]
graphics_pointer_table_offset = rom.allocate(
size=self.graphics_pointer_table.size)
self.graphics_pointer_table.to_block(
block=rom, offset=graphics_pointer_table_offset)
for asm_pointer_offset in GRAPHICS_POINTER_TABLE_ASM_POINTER_OFFSETS:
write_asm_pointer(
block=rom,
offset=asm_pointer_offset,
pointer=to_snes_address(graphics_pointer_table_offset))
arrangement_pointer_table_offset = rom.allocate(
size=self.arrangement_pointer_table.size)
self.arrangement_pointer_table.to_block(
block=rom, offset=arrangement_pointer_table_offset)
for asm_pointer_offset in ARRANGEMENT_POINTER_TABLE_ASM_POINTER_OFFSETS:
write_asm_pointer(
block=rom,
offset=asm_pointer_offset,
pointer=to_snes_address(arrangement_pointer_table_offset))
# Write pals
self.palette_pointer_table.recreate(num_rows=len(self.palettes))
for i, palette in enumerate(self.palettes):
with Block(32) as block:
palette.to_block(block=block, offset=0)
palette_offset = rom.allocate(data=block)
self.palette_pointer_table[i] = [
to_snes_address(palette_offset)
]
palette_pointer_table_offset = rom.allocate(
size=self.palette_pointer_table.size)
self.palette_pointer_table.to_block(
block=rom, offset=palette_pointer_table_offset)
for asm_pointer_offset in PALETTE_POINTER_TABLE_ASM_POINTER_OFFSETS:
write_asm_pointer(
block=rom,
offset=asm_pointer_offset,
pointer=to_snes_address(palette_pointer_table_offset))
def read_from_rom(self, rom):
self.bg_table.from_block(
block=rom, offset=from_snes_address(BACKGROUND_TABLE_OFFSET))
self.scroll_table.from_block(
block=rom, offset=from_snes_address(SCROLL_TABLE_OFFSET))
self.distortion_table.from_block(
block=rom, offset=from_snes_address(DISTORTION_TABLE_OFFSET))
self.graphics_pointer_table.from_block(
block=rom,
offset=from_snes_address(
read_asm_pointer(
block=rom,
offset=GRAPHICS_POINTER_TABLE_ASM_POINTER_OFFSETS[0])))
self.arrangement_pointer_table.from_block(
block=rom,
offset=from_snes_address(
read_asm_pointer(
block=rom,
offset=ARRANGEMENT_POINTER_TABLE_ASM_POINTER_OFFSETS[0])))
self.palette_pointer_table.from_block(
block=rom,
offset=from_snes_address(
read_asm_pointer(
block=rom,
offset=PALETTE_POINTER_TABLE_ASM_POINTER_OFFSETS[0])))
self.backgrounds = [
None for i in range(self.graphics_pointer_table.num_rows)
]
self.palettes = [
None for i in range(self.palette_pointer_table.num_rows)
]
for i in range(self.bg_table.num_rows):
graphics_id = self.bg_table[i][0]
color_depth = self.bg_table[i][2]
if self.backgrounds[graphics_id] is None:
# Max tiles used in rom: 421 (2bpp) 442 (4bpp)
tileset = EbGraphicTileset(num_tiles=512,
tile_width=8,
tile_height=8)
with EbCompressibleBlock() as compressed_block:
compressed_block.from_compressed_block(
block=rom,
offset=from_snes_address(
self.graphics_pointer_table[graphics_id][0]))
tileset.from_block(compressed_block,
offset=0,
bpp=color_depth)
arrangement = EbTileArrangement(width=32, height=32)
with EbCompressibleBlock() as compressed_block:
compressed_block.from_compressed_block(
block=rom,
offset=from_snes_address(
self.arrangement_pointer_table[graphics_id][0]))
arrangement.from_block(block=compressed_block, offset=0)
self.backgrounds[graphics_id] = (tileset, color_depth,
arrangement)
palette_id = self.bg_table[i][1]
if self.palettes[palette_id] is None:
palette = EbPalette(num_subpalettes=1, subpalette_length=16)
palette.from_block(
block=rom,
offset=from_snes_address(
self.palette_pointer_table[palette_id][0]))
self.palettes[palette_id] = palette
