From 992d496396709e1b2595bf4d6da0599b27c4c22f Mon Sep 17 00:00:00 2001
From: whitequark <cz@m-labs.hk>
Date: Fri, 14 Dec 2018 17:05:11 +0000
Subject: [PATCH] back.pysim: in simulator sync processes, start by waiting for
 a tick.

This matches Migen behavior and also makes more sense.
---
 nmigen/back/pysim.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nmigen/back/pysim.py b/nmigen/back/pysim.py
index d09c981..ba4f0bc 100644
--- a/nmigen/back/pysim.py
+++ b/nmigen/back/pysim.py
@@ -241,7 +241,7 @@ class Simulator:
         process = self._check_process(process)
         def sync_process():
             try:
-                result = process.send(None)
+                result = None
                 while True:
                     if result is None:
                         result = Tick(domain)
-- 
2.30.2