From 2d3ad7658bbad3de576a7fe06b71ea48133b6a6c Mon Sep 17 00:00:00 2001
From: Alex Forencich <alex@alexforencich.com>
Date: Thu, 26 Nov 2020 01:26:19 -0800
Subject: [PATCH] Fix exception when tready not connected

---
 cocotbext/axi/axis.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/cocotbext/axi/axis.py b/cocotbext/axi/axis.py
index 61a9f69..5115c5e 100644
--- a/cocotbext/axi/axis.py
+++ b/cocotbext/axi/axis.py
@@ -541,7 +541,8 @@ class AxiStreamSink(object):
 
             await RisingEdge(self.clock)
 
-            self.bus.tready <= (not self.full() and not self.pause)
+            if hasattr(self.bus, "tready"):
+                self.bus.tready <= (not self.full() and not self.pause)
 
     async def _run_pause(self):
         for val in self._pause_generator: