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fix calculate_pointer

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This commit is contained in:
Bryan Bishop 2012-03-12 03:01:38 -05:00
parent 25a5a9cef4
commit ad0f365a37
1 changed files with 7 additions and 3 deletions
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8
extras/crystal.py
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@ -363,11 +363,15 @@ def calculate_bank(address):
if type(address) == str:
address = int(address, 16)
return int(address) / 0x4000
def calculate_pointer(short_pointer, bank):
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 short_pointer > 0x4000:
short_pointer -= 0x4000
bank = int(bank)
pointer = short_pointer - 0x4000 + (bank * 0x4000)
else:
bank = 0
pointer = short_pointer + (bank * 0x4000)
return pointer
def calculate_pointer_from_bytes_at(address, bank=False):
"""calculates a pointer from 2 bytes at a location