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/Arduino.h

@@ -0,0 +1,98 @@
+#ifndef __ARDUINO_H__
+#define __ARDUINO_H__
+
+#include <stdint.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <inttypes.h>
+
+#include "Wiring.h"
+
+#include "core_pins.h"
+
+#define PROGMEM
+
+#ifndef _BV
+#define _BV(x) (1u<<(x))
+#endif 
+
+// SPI CTRL REG BITS
+#define SPIE 	7
+#define SPE 	6
+#define DORD 	5
+#define MSTR 	4
+#define CPOL 	3
+#define CPHA 	2
+#define SPR1 	1
+#define SPR0 	0
+
+
+#define A11 (0xa1)
+
+/*
+SPCR
+| 7    | 6    | 5    | 4    | 3    | 2    | 1    | 0    |
+| SPIE | SPE  | DORD | MSTR | CPOL | CPHA | SPR1 | SPR0 |
+
+SPIE - Enables the SPI interrupt when 1
+SPE - Enables the SPI when 1
+DORD - Sends data least Significant Bit First when 1, most Significant Bit first when 0
+MSTR - Sets the Arduino in master mode when 1, slave mode when 0
+CPOL - Sets the data clock to be idle when high if set to 1, idle when low if set to 0
+CPHA - Samples data on the falling edge of the data clock when 1, rising edge when 0
+SPR1 and SPR0 - Sets the SPI speed, 00 is fastest (4MHz) 11 is slowest (250KHz)
+*/
+
+
+
+#define LSBFIRST 0
+#define MSBFIRST 1
+
+typedef bool boolean;
+typedef uint8_t byte;
+
+// class Print
+// {
+// public:
+// };
+
+
+class SimSerial
+{
+public:
+	void begin(uint32_t speed);
+	void println(uint32_t value);
+	void println();
+	void println(const char* str);
+	void print(const char* str);
+	void print(uint32_t intValue);
+};
+
+extern SimSerial Serial;
+
+//extern void putString(int row, int col, int color, const char* msg, const FONT_INFO fontInfo);
+
+uint16_t micros();
+uint16_t millis();
+void delay(uint32_t millis);
+void delayMicroseconds(uint32_t micros);
+
+
+void pinMode(uint8_t, uint8_t);
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+//void digitalWrite(uint8_t, uint8_t);
+//int digitalRead(uint8_t);
+
+#ifdef __cplusplus
+}
+#endif
+
+int analogRead(uint8_t);
+void analogReference(uint8_t mode);
+void analogWrite(uint8_t, int);
+
+#endif