Simon Bjurek
--- a/b_asic/scheduler.py
+++ b/b_asic/scheduler.py
            for op_id, start_time in alap_start_times.items()
        }

+    def _calculate_memory_reads(
+        self, ready_ops: list["GraphID"]
+    ) -> dict["GraphID", int]:
+        op_reads = {}
+        for op_id in ready_ops:
+            reads = 0
+            for op_input in self._sfg.find_by_id(op_id).inputs:
+                source_op = op_input.signals[0].source.operation
+                if isinstance(source_op, DontCare):
+                    continue
+                if isinstance(source_op, Delay):