diff --git a/lib/emac/sim/.directory_history b/lib/emac/sim/.directory_history
new file mode 100644
index 0000000..d6ce5c8
--- /dev/null
+++ b/lib/emac/sim/.directory_history
@@ -0,0 +1,8 @@
+VHDL/lib/emac/sim/tb_emac_jb.fdo
+VHDL/lib/emac/sim/tb_serdes.fdo
+VHDL/lib/emac/sim/tb_emac_jb.wdo
+VHDL/lib/emac/sim/tb_serdes.wdo
+VHDL/lib/emac/sim/tb_serdes.fdo
+
+VHDL/lib/emac/sim/tb_serdes.wdo
+