Modifying the manner in which memory is mapped, allows a fairly clean mechanism for loading Intel "hex" files.

Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>

inc/MemoryMapping.h

@@ -0,0 +1,16 @@
+#pragma once
+
+#include <cstdint>
+
+#include "Memory.h"
+
+namespace EightBit {
+	struct MemoryMapping {
+
+		enum AccessLevel { Unknown, ReadWrite, ReadOnly };
+
+		Memory& memory;
+		uint16_t begin = 0xffff;
+		AccessLevel access = Unknown;
+	};
+}