# This is a generated file! Please edit source .ksy file and use kaitai-struct-compiler to rebuild from pkg_resources import parse_version from .kaitaistruct import __version__ as ks_version, KaitaiStruct, KaitaiStream, BytesIO import collections from enum import Enum if parse_version(ks_version) < parse_version('0.7'): raise Exception("Incompatible Kaitai Struct Python API: 0.7 or later is required, but you have %s" % (ks_version)) class Ines(KaitaiStruct): """ .. seealso:: Source - https://wiki.nesdev.com/w/index.php/INES """ SEQ_FIELDS = ["header", "trainer", "prg_rom", "chr_rom", "playchoice10", "title"] def __init__(self, _io, _parent=None, _root=None): self._io = _io self._parent = _parent self._root = _root if _root else self self._debug = collections.defaultdict(dict) def _read(self): self._debug['header']['start'] = self._io.pos() self._raw_header = self._io.read_bytes(16) io = KaitaiStream(BytesIO(self._raw_header)) self.header = self._root.Header(io, self, self._root) self.header._read() self._debug['header']['end'] = self._io.pos() if self.header.f6.trainer: self._debug['trainer']['start'] = self._io.pos() self.trainer = self._io.read_bytes(512) self._debug['trainer']['end'] = self._io.pos() self._debug['prg_rom']['start'] = self._io.pos() self.prg_rom = self._io.read_bytes((self.header.len_prg_rom * 16384)) self._debug['prg_rom']['end'] = self._io.pos() self._debug['chr_rom']['start'] = self._io.pos() self.chr_rom = self._io.read_bytes((self.header.len_chr_rom * 8192)) self._debug['chr_rom']['end'] = self._io.pos() if self.header.f7.playchoice10: self._debug['playchoice10']['start'] = self._io.pos() self.playchoice10 = self._root.Playchoice10(self._io, self, self._root) self.playchoice10._read() self._debug['playchoice10']['end'] = self._io.pos() if not (self._io.is_eof()): self._debug['title']['start'] = self._io.pos() self.title = (self._io.read_bytes_full()).decode(u"ASCII") self._debug['title']['end'] = self._io.pos() class Header(KaitaiStruct): SEQ_FIELDS = ["magic", "len_prg_rom", "len_chr_rom", "f6", "f7", "len_prg_ram", "f9", "f10", "reserved"] def __init__(self, _io, _parent=None, _root=None): self._io = _io self._parent = _parent self._root = _root if _root else self self._debug = collections.defaultdict(dict) def _read(self): self._debug['magic']['start'] = self._io.pos() self.magic = self._io.ensure_fixed_contents(b"\x4E\x45\x53\x1A") self._debug['magic']['end'] = self._io.pos() self._debug['len_prg_rom']['start'] = self._io.pos() self.len_prg_rom = self._io.read_u1() self._debug['len_prg_rom']['end'] = self._io.pos() self._debug['len_chr_rom']['start'] = self._io.pos() self.len_chr_rom = self._io.read_u1() self._debug['len_chr_rom']['end'] = self._io.pos() self._debug['f6']['start'] = self._io.pos() self._raw_f6 = self._io.read_bytes(1) io = KaitaiStream(BytesIO(self._raw_f6)) self.f6 = self._root.Header.F6(io, self, self._root) self.f6._read() self._debug['f6']['end'] = self._io.pos() self._debug['f7']['start'] = self._io.pos() self._raw_f7 = self._io.read_bytes(1) io = KaitaiStream(BytesIO(self._raw_f7)) self.f7 = self._root.Header.F7(io, self, self._root) self.f7._read() self._debug['f7']['end'] = self._io.pos() self._debug['len_prg_ram']['start'] = self._io.pos() self.len_prg_ram = self._io.read_u1() self._debug['len_prg_ram']['end'] = self._io.pos() self._debug['f9']['start'] = self._io.pos() self._raw_f9 = self._io.read_bytes(1) io = KaitaiStream(BytesIO(self._raw_f9)) self.f9 = self._root.Header.F9(io, self, self._root) self.f9._read() self._debug['f9']['end'] = self._io.pos() self._debug['f10']['start'] = self._io.pos() self._raw_f10 = self._io.read_bytes(1) io = KaitaiStream(BytesIO(self._raw_f10)) self.f10 = self._root.Header.F10(io, self, self._root) self.f10._read() self._debug['f10']['end'] = self._io.pos() self._debug['reserved']['start'] = self._io.pos() self.reserved = self._io.ensure_fixed_contents(b"\x00\x00\x00\x00\x00") self._debug['reserved']['end'] = self._io.pos() class F6(KaitaiStruct): """ .. seealso:: Source - https://wiki.nesdev.com/w/index.php/INES#Flags_6 """ class Mirroring(Enum): horizontal = 0 vertical = 1 SEQ_FIELDS = ["lower_mapper", "four_screen", "trainer", "has_battery_ram", "mirroring"] def __init__(self, _io, _parent=None, _root=None): self._io = _io self._parent = _parent self._root = _root if _root else self self._debug = collections.defaultdict(dict) def _read(self): self._debug['lower_mapper']['start'] = self._io.pos() self.lower_mapper = self._io.read_bits_int(4) self._debug['lower_mapper']['end'] = self._io.pos() self._debug['four_screen']['start'] = self._io.pos() self.four_screen = self._io.read_bits_int(1) != 0 self._debug['four_screen']['end'] = self._io.pos() self._debug['trainer']['start'] = self._io.pos() self.trainer = self._io.read_bits_int(1) != 0 self._debug['trainer']['end'] = self._io.pos() self._debug['has_battery_ram']['start'] = self._io.pos() self.has_battery_ram = self._io.read_bits_int(1) != 0 self._debug['has_battery_ram']['end'] = self._io.pos() self._debug['mirroring']['start'] = self._io.pos() self.mirroring = KaitaiStream.resolve_enum(self._root.Header.F6.Mirroring, self._io.read_bits_int(1)) self._debug['mirroring']['end'] = self._io.pos() class F7(KaitaiStruct): """ .. seealso:: Source - https://wiki.nesdev.com/w/index.php/INES#Flags_7 """ SEQ_FIELDS = ["upper_mapper", "format", "playchoice10", "vs_unisystem"] def __init__(self, _io, _parent=None, _root=None): self._io = _io self._parent = _parent self._root = _root if _root else self self._debug = collections.defaultdict(dict) def _read(self): self._debug['upper_mapper']['start'] = self._io.pos() self.upper_mapper = self._io.read_bits_int(4) self._debug['upper_mapper']['end'] = self._io.pos() self._debug['format']['start'] = self._io.pos() self.format = self._io.read_bits_int(2) self._debug['format']['end'] = self._io.pos() self._debug['playchoice10']['start'] = self._io.pos() self.playchoice10 = self._io.read_bits_int(1) != 0 self._debug['playchoice10']['end'] = self._io.pos() self._debug['vs_unisystem']['start'] = self._io.pos() self.vs_unisystem = self._io.read_bits_int(1) != 0 self._debug['vs_unisystem']['end'] = self._io.pos() class F9(KaitaiStruct): """ .. seealso:: Source - https://wiki.nesdev.com/w/index.php/INES#Flags_9 """ class TvSystem(Enum): ntsc = 0 pal = 1 SEQ_FIELDS = ["reserved", "tv_system"] def __init__(self, _io, _parent=None, _root=None): self._io = _io self._parent = _parent self._root = _root if _root else self self._debug = collections.defaultdict(dict) def _read(self): self._debug['reserved']['start'] = self._io.pos() self.reserved = self._io.read_bits_int(7) self._debug['reserved']['end'] = self._io.pos() self._debug['tv_system']['start'] = self._io.pos() self.tv_system = KaitaiStream.resolve_enum(self._root.Header.F9.TvSystem, self._io.read_bits_int(1)) self._debug['tv_system']['end'] = self._io.pos() class F10(KaitaiStruct): """ .. seealso:: Source - https://wiki.nesdev.com/w/index.php/INES#Flags_10 """ class TvSystem(Enum): ntsc = 0 dual1 = 1 pal = 2 dual2 = 3 SEQ_FIELDS = ["reserved1", "bus_conflict", "prg_ram", "reserved2", "tv_system"] def __init__(self, _io, _parent=None, _root=None): self._io = _io self._parent = _parent self._root = _root if _root else self self._debug = collections.defaultdict(dict) def _read(self): self._debug['reserved1']['start'] = self._io.pos() self.reserved1 = self._io.read_bits_int(2) self._debug['reserved1']['end'] = self._io.pos() self._debug['bus_conflict']['start'] = self._io.pos() self.bus_conflict = self._io.read_bits_int(1) != 0 self._debug['bus_conflict']['end'] = self._io.pos() self._debug['prg_ram']['start'] = self._io.pos() self.prg_ram = self._io.read_bits_int(1) != 0 self._debug['prg_ram']['end'] = self._io.pos() self._debug['reserved2']['start'] = self._io.pos() self.reserved2 = self._io.read_bits_int(2) self._debug['reserved2']['end'] = self._io.pos() self._debug['tv_system']['start'] = self._io.pos() self.tv_system = KaitaiStream.resolve_enum(self._root.Header.F10.TvSystem, self._io.read_bits_int(2)) self._debug['tv_system']['end'] = self._io.pos() @property def mapper(self): """ .. seealso:: Source - https://wiki.nesdev.com/w/index.php/Mapper """ if hasattr(self, '_m_mapper'): return self._m_mapper if hasattr(self, '_m_mapper') else None self._m_mapper = (self.f6.lower_mapper | (self.f7.upper_mapper << 4)) return self._m_mapper if hasattr(self, '_m_mapper') else None class Playchoice10(KaitaiStruct): """ .. seealso:: Source - http://wiki.nesdev.com/w/index.php/PC10_ROM-Images """ SEQ_FIELDS = ["inst_rom", "prom"] def __init__(self, _io, _parent=None, _root=None): self._io = _io self._parent = _parent self._root = _root if _root else self self._debug = collections.defaultdict(dict) def _read(self): self._debug['inst_rom']['start'] = self._io.pos() self.inst_rom = self._io.read_bytes(8192) self._debug['inst_rom']['end'] = self._io.pos() self._debug['prom']['start'] = self._io.pos() self.prom = self._root.Playchoice10.Prom(self._io, self, self._root) self.prom._read() self._debug['prom']['end'] = self._io.pos() class Prom(KaitaiStruct): SEQ_FIELDS = ["data", "counter_out"] def __init__(self, _io, _parent=None, _root=None): self._io = _io self._parent = _parent self._root = _root if _root else self self._debug = collections.defaultdict(dict) def _read(self): self._debug['data']['start'] = self._io.pos() self.data = self._io.read_bytes(16) self._debug['data']['end'] = self._io.pos() self._debug['counter_out']['start'] = self._io.pos() self.counter_out = self._io.read_bytes(16) self._debug['counter_out']['end'] = self._io.pos()