From: whitequark <cz@m-labs.hk>
Date: Fri, 14 Dec 2018 17:05:11 +0000 (+0000)
Subject: back.pysim: in simulator sync processes, start by waiting for a tick.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=992d496396709e1b2595bf4d6da0599b27c4c22f;p=nmigen.git

back.pysim: in simulator sync processes, start by waiting for a tick.

This matches Migen behavior and also makes more sense.
---

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)