rtc integration
diff --git a/.gitmodules b/.gitmodules
index 5426bcd..df1d438 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -13,3 +13,6 @@
 [submodule "verilog/rtl/fpu"]
 	path = verilog/rtl/fpu
 	url = https://github.com/dineshannayya/fpu
+[submodule "verilog/rtl/rtc"]
+	path = verilog/rtl/rtc
+	url = https://github.com/dineshannayya/rtc