""" Various functions related to pointer and address math. Mostly to avoid depedency loops. """ def calculate_pointer(short_pointer, bank=None): """calculates the full address given a 4-byte pointer and bank byte""" short_pointer = int(short_pointer) if 0x4000 <= short_pointer <= 0x7fff: short_pointer -= 0x4000 bank = int(bank) else: bank = 0 pointer = short_pointer + (bank * 0x4000) return pointer