GameBoy\Core::setCurrentMBC2AND3ROMBank PHP Method

    public function setCurrentMBC2AND3ROMBank()
    {
        //Read the cartridge ROM data from RAM memory:
        //Only map bank 0 to bank 1 here (MBC2 is like MBC1, but can only do 16 banks, so only the bank 0 quirk appears for MBC2):
        $this->currentROMBank = max($this->ROMBank1offs - 1, 0) * 0x4000;
        while ($this->currentROMBank + 0x4000 >= count($this->ROM)) {
            $this->currentROMBank -= count($this->ROM);
        }
    }