Simple simulation code

Builds a native program on MacOS that runs the NuEVI firmware compiled for x86_64.
Only input is arrow keys for menu buttons for now. Only output is console and display.

Copied some more library files into the simulation folder, and renamed the modified *.cpp files from the libraries to *_sim.cpp.

simulation/include/EEPROM.h

@@ -0,0 +1,42 @@
+#ifndef __EEPROM_H
+#define __EEPROM_H
+
+#include <stdint.h>
+
+struct EEPROMClass
+{
+    //Basic user access methods.
+   //  EERef operator[]( const int idx )    { return idx; }
+    uint8_t read( int idx ); //            { return EERef( idx ); }
+    void write( int idx, uint8_t val ); //   { (EERef( idx )) = val; }
+    void update( int idx, uint8_t val ); //  { EERef( idx ).update( val ); }
+
+    //STL and C++11 iteration capability.
+    // EEPtr begin()                        { return 0x00; }
+    // EEPtr end()                          { return length(); } //Standards requires this to be the item after the last valid entry. The returned pointer is invalid.
+    uint16_t length(); //                    { return E2END + 1; }
+
+    //Functionality to 'get' and 'put' objects to and from EEPROM.
+//     template< typename T > T &get( int idx, T &t ){
+//         EEPtr e = idx;
+//         uint8_t *ptr = (uint8_t*) &t;
+//         for( int count = sizeof(T) ; count ; --count, ++e )  *ptr++ = *e;
+//         return t;
+//     }
+
+//     template< typename T > const T &put( int idx, const T &t ){
+//         const uint8_t *ptr = (const uint8_t*) &t;
+// #ifdef __arm__
+//         eeprom_write_block(ptr, (void *)idx, sizeof(T));
+// #else
+//         EEPtr e = idx;
+//         for( int count = sizeof(T) ; count ; --count, ++e )  (*e).update( *ptr++ );
+// #endif
+//         return t;
+//     }
+};
+
+static EEPROMClass EEPROM __attribute__ ((unused));
+
+
+#endif