ref: c4a764ce1073e5cfc3b2045282c83beda314ca91
dir: /extras/pointers.py/
# -*- coding: utf-8 -*- """ Various functions related to pointer and address math. Mostly to avoid depedency loops. """ def calculate_bank(address): """you are too lazy to divide on your own?""" if type(address) == str: address = int(address, 16) #if 0x4000 <= address <= 0x7FFF: # raise Exception, "bank 1 does not exist" return int(address) / 0x4000 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