diff --git a/litedram/core/bankmachine.py b/litedram/core/bankmachine.py
index 55512bc..144929d 100644
--- a/litedram/core/bankmachine.py
+++ b/litedram/core/bankmachine.py
@@ -34,7 +34,10 @@ class _AddressSlicer:
 
     def col(self, address):
         split = self.colbits - self.address_align
-        return Cat(Replicate(0, self.address_align), address[:split])
+        if self.colbits>10: # A10 is reserved for auto-precharge, this bit needs to be skipped for col addresses
+            return Cat(Replicate(0, self.address_align), address[:10-self.address_align], 0, address[10-self.address_align:split])
+        else:
+            return Cat(Replicate(0, self.address_align), address[:split])
 
 # BankMachine --------------------------------------------------------------------------------------