ERROR: function used was not declared in scope

first of all i want to apologize if this is not right place for this thread but i will really appreciate some help on my project ..... i m attaching my setup code below. every time compile it, it gives error" function used was not declared in scope"

void setup()
{
/* defining input ports*/
pinMode (2,INPUT);
pinMode (3,INPUT);
pinMode (4,INPUT);
pinMode (5,INPUT);
pinMode (6,INPUT);
/defining output ports/
pinMode(7,OUTPUT);
pinMode(8,OUTPUT);
pinMode(9,OUTPUT);
pinMode(10,OUTPUT);
pinMode(11,OUTPUT);
/DAC output ports/
pinMode(A0,OUTPUT);
pinMode(A1,OUTPUT);
pinMode(A2,OUTPUT);
pinMode(A3,OUTPUT);
/* serial communication*/
Serial.begin(9600);
/* interrupt */
attachInterrupt(0,interrupt1,CHANGE);

}
void loop()
{}
void iterrupt1()
{
asm volatile (" jmp 0");
}
i m looking for any error from past 4 hours.want some help very soon .thanks in advance!!!!!!!!!!

attachInterrupt(0,interrupt1,CHANGE);

void iterrupt1()  // You spelled it wrong

Sir john is correct you spelled it wrong!

sorry for giving you pain, guys. it was a seriously dumb mistake i did, which took me hours to correct. sorry once again..... and thanx a lot for helping me.