From ca07f1d64c0235b49160fc501553a70af8331d81 Mon Sep 17 00:00:00 2001 From: Bryan Bishop Date: Wed, 20 Jun 2012 01:13:15 -0500 Subject: move code around to avoid dependency loops --- extras/pointers.py | 15 +++++++++++++++ 1 file changed, 15 insertions(+) create mode 100644 extras/pointers.py (limited to 'extras/pointers.py') diff --git a/extras/pointers.py b/extras/pointers.py new file mode 100644 index 000000000..d7b3cb877 --- /dev/null +++ b/extras/pointers.py @@ -0,0 +1,15 @@ +""" 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 + -- cgit v1.2.3