Improve tumbl, tweak xst settings for more optimal synthesis

[fpga/lx-cpu1/lx-rocon.git] / submodule / tumbl

diff --git a/submodule/tumbl b/submodule/tumbl
index 8f15121bd781ce710a4bea9c4bb9b4975b556e2e..b4ac16f8af94e83dcf1af5caf7b54a9335f41dd1 160000 (submodule)
--- a/submodule/tumbl
+++ b/submodule/tumbl
@@ -1 +1 @@
-Subproject commit 8f15121bd781ce710a4bea9c4bb9b4975b556e2e
+Subproject commit b4ac16f8af94e83dcf1af5caf7b54a9335f41dd1