Started on common and core packages.

src/core/gba/core.cpp

@@ -0,0 +1,19 @@
+/*
+ * Copyright 2016 gtalent2@gmail.com
+ * 
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+#include "../types.hpp"
+#include "registers.hpp"
+
+namespace nostalgia {
+namespace core {
+
+int init() {
+	return 0;
+}
+
+}
+}

src/core/gba/gfx.cpp

@@ -0,0 +1,8 @@
+/*
+ * Copyright 2016 gtalent2@gmail.com
+ * 
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+#include "registers.hpp"

src/core/gba/registers.hpp

@@ -0,0 +1,13 @@
+/*
+ * Copyright 2016 gtalent2@gmail.com
+ * 
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+#ifndef NOSTALGIA_CORE_GBA_REGISTERS_HPP
+#define NOSTALGIA_CORE_GBA_REGISTERS_HPP
+
+#define REG_DISPCNT *((volatile unsigned int*) 0x04000000)
+
+#endif