diff --git a/_Sidebar.md b/_Sidebar.md
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 * [Porting cores](PortingCores)
 * [SDRAM details](TG68SDRAM)
 * [ARC files](ARC-Files)
+* [MRA files](CoreDocArcade#mra-and-arc-files)
 ### Hardware Development
 * [Compiling firmware](HowToCompileTheFirmware)
 * [Pin usage on the FPGA](Pins)