diff --git a/melonDS.cbp b/melonDS.cbp
index 58f86a63..8d900d1f 100644
--- a/melonDS.cbp
+++ b/melonDS.cbp
@@ -100,6 +100,8 @@
 		<Unit filename="melon.rc">
 			<Option compilerVar="WINDRES" />
 		</Unit>
+		<Unit filename="src/ARCodeList.cpp" />
+		<Unit filename="src/ARCodeList.h" />
 		<Unit filename="src/AREngine.cpp" />
 		<Unit filename="src/AREngine.h" />
 		<Unit filename="src/ARM.cpp" />
diff --git a/src/ARCodeList.cpp b/src/ARCodeList.cpp
new file mode 100644
index 00000000..380481fb
--- /dev/null
+++ b/src/ARCodeList.cpp
@@ -0,0 +1,38 @@
+/*
+    Copyright 2016-2020 Arisotura
+
+    This file is part of melonDS.
+
+    melonDS is free software: you can redistribute it and/or modify it under
+    the terms of the GNU General Public License as published by the Free
+    Software Foundation, either version 3 of the License, or (at your option)
+    any later version.
+
+    melonDS is distributed in the hope that it will be useful, but WITHOUT ANY
+    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+    FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with melonDS. If not, see http://www.gnu.org/licenses/.
+*/
+
+#include <stdio.h>
+#include "ARCodeList.h"
+
+/*
+    Action Replay code list format
+
+    header:
+    00 - magic MLAR
+    04 - version major
+    06 - version minor
+    08 - length
+    0C - number of codes
+
+    code header:
+    00 - magic MLCD
+    04 - name length
+    08 - code length
+    0C - enable flag
+    10 - code data (UTF8 name then actual code)
+*/
diff --git a/src/ARCodeList.h b/src/ARCodeList.h
new file mode 100644
index 00000000..b46510c0
--- /dev/null
+++ b/src/ARCodeList.h
@@ -0,0 +1,33 @@
+/*
+    Copyright 2016-2020 Arisotura
+
+    This file is part of melonDS.
+
+    melonDS is free software: you can redistribute it and/or modify it under
+    the terms of the GNU General Public License as published by the Free
+    Software Foundation, either version 3 of the License, or (at your option)
+    any later version.
+
+    melonDS is distributed in the hope that it will be useful, but WITHOUT ANY
+    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+    FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with melonDS. If not, see http://www.gnu.org/licenses/.
+*/
+
+#ifndef ARCODELIST_H
+#define ARCODELIST_H
+
+#include "types.h"
+
+#define ARCL_MAJOR 1
+#define ARCL_MINOR 1
+
+class ARCodeList
+{
+public:
+    //
+};
+
+#endif // ARCODELIST_H
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 3b760ba8..5537e6d0 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,6 +1,7 @@
 project(core)
 
 add_library(core STATIC
+	ARCodeList.cpp
 	AREngine.cpp
 	ARM.cpp
 	ARMInterpreter.cpp