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diff --git a/amaranth/hdl/ast.py b/amaranth/hdl/ast.py
index 7655d8a..8921bb8 100644
--- a/amaranth/hdl/ast.py
+++ b/amaranth/hdl/ast.py
@@ -184,6 +184,9 @@ class Value(metaclass=ABCMeta):
         super().__init__()
         self.src_loc = tracer.get_src_loc(1 + src_loc_at)
 
+    def __await__(self):
+        return (yield self)
+
     def __bool__(self):
         raise TypeError("Attempted to convert Amaranth value to Python boolean")
 
@@ -1500,6 +1503,9 @@ class Statement:
     def __init__(self, *, src_loc_at=0):
         self.src_loc = tracer.get_src_loc(1 + src_loc_at)
 
+    def __await__(self):
+        yield self
+
     @staticmethod
     def cast(obj):
         if isinstance(obj, Iterable):
diff --git a/amaranth/sim/core.py b/amaranth/sim/core.py
index e2ec560..798f46c 100644
--- a/amaranth/sim/core.py
+++ b/amaranth/sim/core.py
@@ -11,7 +11,8 @@ __all__ = ["Settle", "Delay", "Tick", "Edge", "Passive", "Active", "Simulator"]
 
 
 class Command:
-    pass
+    def __await__(self):
+        yield self
 
 
 class Settle(Command):
@@ -83,7 +84,10 @@ class Simulator:
         def wrapper():
             # Only start a bench process after comb settling, so that the reset values are correct.
             yield Settle()
-            yield from process()
+            g = process()
+            if inspect.isawaitable(g):
+                g = g.__await__()
+            yield from g
         self._engine.add_coroutine_process(wrapper, default_cmd=None)
 
     def add_sync_process(self, process, *, domain="sync"):
@@ -92,7 +96,10 @@ class Simulator:
             # Only start a sync process after the first clock edge (or reset edge, if the domain
             # uses an asynchronous reset). This matches the behavior of synchronous FFs.
             yield Tick(domain)
-            yield from process()
+            g = process()
+            if inspect.isawaitable(g):
+                g = g.__await__()
+            yield from g
         self._engine.add_coroutine_process(wrapper, default_cmd=Tick(domain))
 
     def add_clock(self, period, *, phase=None, domain="sync", if_exists=False):