Function iNESLoad

src/ines.cpp:804–1091

};

int iNESLoad(const char *name, FCEUFILE *fp, int OverwriteVidMode) {
	int result;
	struct md5_context md5;
	uint64 partialmd5 = 0;
	const char* mappername = "Not Listed";

	if (FCEU_fread(&head, 1, 16, fp) != 16 || memcmp(&head, "NES\x1A", 4))
		return LOADER_INVALID_FORMAT;
	
	head.cleanup();

	iNESCart.clear();

	iNES2 = ((head.ROM_type2 & 0x0C) == 0x08);
	if(iNES2)
	{
		iNESCart.ines2 = true;
		iNESCart.wram_size = (head.RAM_size & 0x0F)?(64 << (head.RAM_size & 0x0F)):0;
		iNESCart.battery_wram_size = (head.RAM_size & 0xF0)?(64 << ((head.RAM_size & 0xF0)>>4)):0;
		iNESCart.vram_size = (head.VRAM_size & 0x0F)?(64 << (head.VRAM_size & 0x0F)):0;
		iNESCart.battery_vram_size = (head.VRAM_size & 0xF0)?(64 << ((head.VRAM_size & 0xF0)>>4)):0;
		iNESCart.submapper = head.ROM_type3 >> 4;
	}

	MapperNo = (head.ROM_type >> 4);
	MapperNo |= (head.ROM_type2 & 0xF0);
	if(iNES2) MapperNo |= ((head.ROM_type3 & 0x0F) << 8);
	
	if (head.ROM_type & 8) {
		Mirroring = 2;
	} else
		Mirroring = (head.ROM_type & 1);

	MirroringAs2bits = head.ROM_type & 1;
	if (head.ROM_type & 8) MirroringAs2bits |= 2;

	int not_round_size;
	if (!iNES2)	{
		not_round_size = head.ROM_size;
	}
	else {
		if ((head.Upper_ROM_VROM_size & 0x0F) != 0x0F)
			// simple notation
			not_round_size = head.ROM_size | ((head.Upper_ROM_VROM_size & 0x0F) << 8);
		else
			// exponent-multiplier notation
			not_round_size = ((1 << (head.ROM_size >> 2)) * ((head.ROM_size & 0b11) * 2 + 1)) >> 14;
	}
	
	if (!head.ROM_size && !iNES2)
		ROM_size = 256;
	else
		ROM_size = uppow2(not_round_size);

	VROM_size = uppow2(head.VROM_size | (iNES2?((head.Upper_ROM_VROM_size & 0xF0)<<4):0));
	if (!iNES2)	{
		VROM_size = uppow2(head.VROM_size);
	}