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""" 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
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