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sim: support clock domains without sync

This commit is contained in:
Sebastien Bourdeauducq 2015-09-12 15:12:57 +08:00
parent fd986210f8
commit 7bd72a16df
1 changed files with 21 additions and 20 deletions
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41
migen/sim.py
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@ -148,24 +148,23 @@ class Simulator:
modified = self.evaluator.commit()
def _process_generators(self, cd):
if cd in self.generators:
exhausted = []
for generator in self.generators[cd]:
reply = None
while True:
try:
request = generator.send(reply)
if request is None:
break # next cycle
elif isinstance(request, tuple):
self.evaluator.assign(*request)
else:
reply = self.evaluator.eval(request)
except StopIteration:
exhausted.append(generator)
break
for generator in exhausted:
self.generators[cd].remove(generator)
exhausted = []
for generator in self.generators[cd]:
reply = None
while True:
try:
request = generator.send(reply)
if request is None:
break # next cycle
elif isinstance(request, tuple):
self.evaluator.assign(*request)
else:
reply = self.evaluator.eval(request)
except StopIteration:
exhausted.append(generator)
break
for generator in exhausted:
self.generators[cd].remove(generator)
def _continue_simulation(self):
# TODO: passive generators
@ -178,8 +177,10 @@ class Simulator:
while True:
cds = self.time.tick()
for cd in cds:
self.evaluator.execute(self.fragment.sync[cd])
self._process_generators(cd)
if cd in self.fragment.sync:
self.evaluator.execute(self.fragment.sync[cd])
if cd in self.generators:
self._process_generators(cd)
self._comb_propagate(self.evaluator.commit())
if not self._continue_simulation():