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diff --git a/contrib/osal/erika/README.md b/contrib/osal/erika/README.md
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--- /dev/null
+++ b/contrib/osal/erika/README.md
@@ -0,0 +1,4 @@
+ERIKA Enterprise RTOS
+---------------------
+
+ * Refer to http://www.erika-enterprise.com/wiki/index.php?title=EtherCAT_Master
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