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-rw-r--r--pokemontools/vba/vba.py4
1 files changed, 2 insertions, 2 deletions
diff --git a/pokemontools/vba/vba.py b/pokemontools/vba/vba.py
index d8ceebb..0818b93 100644
--- a/pokemontools/vba/vba.py
+++ b/pokemontools/vba/vba.py
@@ -142,8 +142,8 @@ class crystal(object):
:param max_wait: number of wait loops to perform
"""
while max_wait > 0:
- hi = self.vba.read_memory_at(registers.sp + 1)
- lo = self.vba.read_memory_at(registers.sp)
+ hi = self.vba.read_memory_at(self.registers.sp + 1)
+ lo = self.vba.read_memory_at(self.registers.sp)
address = ((hi << 8) | lo)
if address in range(0xa1b, 0xa46) + range(0xaaf, 0xaf5): # 0xaef: