Interrupt change

hi,
i have push button on pin 13 of 328p.
i've been using following code change interrupt:

code: [select]


volatile long ticks = 0;
long oldticks=0;

signal(pcint0_vect) {
 ticks++;
}

void setup()
{
 serial.begin(9600);
 digitalwrite(13,high);
 pinmode(13, input);
 pcmsk0 |= 32;
 pcicr |= 1;
}

void loop() {
 if (ticks>oldticks)
 {
   oldticks=ticks;
   serial.println("interrupt");
 }
}
first question:
is interrupt change needed or there label pcint0_vect applies pin 13?
second question:
what need change same thing on 2560?

thanks,
ri

well, looked in 2560 datasheet , answered own question...
the pin 13 on 2560 pcint7.
so changing this:
 pcmsk0 |= 32;
to this:
 pcmsk0 |= 128;
did trick.

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