From 4462b9b2461c1bec27b88b872bda08a0972228c4 Mon Sep 17 00:00:00 2001
From: Bryan Bishop <kanzure@gmail.com>
Date: Fri, 23 Mar 2012 01:26:02 -0500
Subject: calculate_pointer_from_bytes_at update suggested by sankina

---
 extras/crystal.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/extras/crystal.py b/extras/crystal.py
index 61de8cc30..91e87e328 100644
--- a/extras/crystal.py
+++ b/extras/crystal.py
@@ -498,6 +498,8 @@ def calculate_pointer_from_bytes_at(address, bank=False):
     byte1 = ord(rom[address])
     byte2 = ord(rom[address+1])
     temp  = byte1 + (byte2 << 8)
+    if temp == 0:
+        return None
     return calculate_pointer(temp, bank)
 
 def clean_up_long_info(long_info):
-- 
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