#if ! defined(EI_NOTINT0) && ! defined(EI_NOTINT1) && ! defined(EI_NOTINT2) && ! defined(EI_NOTINT3) && ! defined(EI_NOTINT4) && ! defined(EI_NOTINT5) && ! defined(EI_NOTINT6) && ! defined(EI_NOTINT7)
#ifdef EI_SECTION_ENABLEEXTERNAL
switch (arduinoPin) {
#ifndef EI_NOTINT0
#if defined __AVR_ATmega1281__ || defined __AVR_ATmega2561__
  case 18 : // INT0 (xxx1 - MegaCore pinout)
#else
  case 21 : // INT0
#endif
#ifndef NEEDFORSPEED
    functionPointerArrayEXTERNAL[0] = userFunction;
#endif
    EIMSK &= ~_BV(0);
    EICRA &= (~_BV(0) & ~_BV(1));
    EICRA |= mode;
    EIFR |= _BV(0);
    EIMSK |= _BV(0);
    break;
#endif
#ifndef EI_NOTINT1
#if defined __AVR_ATmega1281__ || defined __AVR_ATmega2561__
  case 19 : // INT1
#else
  case 20 : // INT1
#endif
#ifndef NEEDFORSPEED
    functionPointerArrayEXTERNAL[1] = userFunction;
#endif
    EIMSK &= ~_BV(1);
    EICRA &= (~_BV(2) & ~_BV(3));
    EICRA |= (mode << 2);
    EIFR |= _BV(1);
    EIMSK |= _BV(1);
    break; 
#endif
#ifndef EI_NOTINT2
#if defined __AVR_ATmega1281__ || defined __AVR_ATmega2561__
  case 20 : // INT2
#else
  case 19 : // INT2
#endif
#ifndef NEEDFORSPEED
    functionPointerArrayEXTERNAL[2] = userFunction;
#endif
    EIMSK &= ~_BV(2);
    EICRA &= (~_BV(4) & ~_BV(5));
    EICRA |= (mode << 4);
    EIFR |= _BV(2);
    EIMSK |= _BV(2);
    break;
#endif
#ifndef EI_NOTINT3
#if defined __AVR_ATmega1281__ || defined __AVR_ATmega2561__
  case 21 : // INT3
#else
  case 18 : // INT3
#endif
#ifndef NEEDFORSPEED
    functionPointerArrayEXTERNAL[3] = userFunction;
#endif
    EIMSK &= ~_BV(3);
    EICRA &= (~_BV(6) & ~_BV(7));
    EICRA |= (mode << 6);
    EIFR |= _BV(3);
    EIMSK |= _BV(3);
    break;
#endif
#ifndef EI_NOTINT4
#if defined __AVR_ATmega1281__ || defined __AVR_ATmega2561__
  case  4 : // INT4
#else
  case  2 : // INT4
#endif
#ifndef NEEDFORSPEED
    functionPointerArrayEXTERNAL[4] = userFunction;
#endif
    EIMSK &= ~_BV(4);
    EICRB &= (~_BV(0) & ~_BV(1));
    EICRB |= mode;
    EIFR |= _BV(4);
    EIMSK |= _BV(4);
    break;
#endif
#ifndef EI_NOTINT5
#if defined __AVR_ATmega1281__ || defined __AVR_ATmega2561__
  case  5 : // INT5
#else
  case  3 : // INT5
#endif
#ifndef NEEDFORSPEED
    functionPointerArrayEXTERNAL[5] = userFunction;
#endif
    EIMSK &= ~_BV(5);
    EICRB &= (~_BV(2) & ~_BV(3));
    EICRB |= (mode << 2);
    EIFR |= _BV(5);
    EIMSK |= _BV(5);
    break;
#endif
#ifndef EI_NOTINT6
#if defined __AVR_ATmega1281__ || defined __AVR_ATmega2561__
  case  6 : // INT6
#else
  case 75 : // INT6- Fake Arduino Pin
#endif
#ifndef NEEDFORSPEED
    functionPointerArrayEXTERNAL[6] = userFunction;
#endif
    EIMSK &= ~_BV(6);
    EICRB &= (~_BV(4) & ~_BV(5));
    EICRB |= (mode << 4);
    EIFR |= _BV(6);
    EIMSK |= _BV(6);
    break;
#endif
#ifndef EI_NOTINT7
#if defined __AVR_ATmega1281__ || defined __AVR_ATmega2561__
  case  7 : // INT7
#else
  case 76 : // INT7- Fake Arduino Pin
#endif
#ifndef NEEDFORSPEED
    functionPointerArrayEXTERNAL[7] = userFunction;
#endif
    EIMSK &= ~_BV(7);
    EICRB &= (~_BV(6) & ~_BV(7));
    EICRB |= (mode << 6);
    EIFR |= _BV(7);
    EIMSK |= _BV(7);
    break;
#endif
}
#endif // EI_SECTION_ENABLEEXTERNAL

#ifdef EI_SECTION_DISABLEEXTERNAL
switch (arduinoPin) {
#ifndef EI_NOTINT0
#if defined __AVR_ATmega1281__ || defined __AVR_ATmega2561__
  case 18 : // INT0
#else
  case 21 : // INT0
#endif
    EIMSK &= ~_BV(0);
    EICRA &= (~_BV(0) & ~_BV(1));
    EIFR |= _BV(0);
    break;
#endif
#ifndef EI_NOTINT1
#if defined __AVR_ATmega1281__ || defined __AVR_ATmega2561__
  case 19 : // INT1
#else
  case 20 : // INT1
#endif
    EIMSK &= ~_BV(1);
    EICRA &= (~_BV(2) & ~_BV(3));
    EIFR |= _BV(1);
    break;
#endif
#ifndef EI_NOTINT2
#if defined __AVR_ATmega1281__ || defined __AVR_ATmega2561__
  case 20 : // INT2
#else
  case 19 : // INT2
#endif
    EIMSK &= ~_BV(2);
    EICRA &= (~_BV(4) & ~_BV(5));
    EIFR |= _BV(2);
    break;
#endif
#ifndef EI_NOTINT3
#if defined __AVR_ATmega1281__ || defined __AVR_ATmega2561__
  case 21 : // INT3
#else
  case 18 : // INT3
#endif
    EIMSK &= ~_BV(3);
    EICRA &= (~_BV(6) & ~_BV(7));
    EIFR |= _BV(3);
    break; 
#endif
#ifndef EI_NOTINT4
#if defined __AVR_ATmega1281__ || defined __AVR_ATmega2561__
  case  4 : // INT4
#else
  case  2 : // INT4
#endif
    EIMSK &= ~_BV(4);
    EICRB &= (~_BV(0) & ~_BV(1));
    EIFR |= _BV(4);
    break;
#endif
#ifndef EI_NOTINT5
#if defined __AVR_ATmega1281__ || defined __AVR_ATmega2561__
  case  5 : // INT5
#else
  case  3 : // INT5
#endif
    EIMSK &= ~_BV(5);
    EICRB &= (~_BV(2) & ~_BV(3));
    EIFR |= _BV(5);
    break;
#endif
#ifndef EI_NOTINT6
#if defined __AVR_ATmega1281__ || defined __AVR_ATmega2561__
  case  6 : // INT6
#else
  case 75 : // INT6- Fake Arduino Pin
#endif
    EIMSK &= ~_BV(6);
    EICRB &= (~_BV(4) & ~_BV(5));
    EIFR |= _BV(6);
    break;
#endif
#ifndef EI_NOTINT7
#if defined __AVR_ATmega1281__ || defined __AVR_ATmega2561__
  case  7 : // INT7
#else
  case 76 : // INT7- Fake Arduino Pin
#endif
    EIMSK &= ~_BV(7);
    EICRB &= (~_BV(6) & ~_BV(7));
    EIFR |= _BV(7);
    break;
#endif
}
#endif // EI_SECTION_DISABLEEXTERNAL
#endif // ! defined(EI_NOTINT0) && ! defined(EI_NOTINT1) && ! defined(EI_NOTINT2) && ! defined(EI_NOTINT3) && ! defined(EI_NOTINT4) && ! defined(EI_NOTINT5) && ! defined(EI_NOTINT6) && ! defined(EI_NOTINT7)