serial interrupt problem

Hi all,


I am facing a problem while debugging the code. The following error is comming and it is jumping to disassembly


Error message is


*** 65: access voilation at 0X001B: no 'execute/read' permission


This location is Timer 1 interrupt routine.





My code is as follows


Following is a part of total code.
<pre

void sendserial(char);

void init_run(void);

//void init_stop(void);

//void send_response(void);

void main(void)

{

P1 = 0x00 ; //Initialise P1.0 to P1.3 used as output &

//Initialise P1.4 to P1.7 used as input

SP = 0x50;

SCON = 0x50; //Set Serial IO to receive.And select mode1

TMOD = 0x21; //configure timer for the correct baud rate

TH0 = 0x00;

TL0 = 0xF7;

TH1 = 0xFD; //TH1: reload value for 9600baud @11.059MHz

TL1 = 0xFD; //TH1: reload value for 9600baud @11.059MHz

TCON = 0x00; //Set timer to not running

T2CON= 0x00;

T2MOD= 0x02;

// TI = 0; //clear transmit interrupt flag

// RI = 0; //clear receive interrupt flag

// TR0 = 1; //start timer 0

TR1 = 1; //start timer to Receive

TR2 = 0;

IE = 0xFA;

ET0 = 1; //enable timer 0 interrupt

// ET1 = 1;

EA = 1; //Enable global interrupt

ES = 1; //Enable serial interrupt

PS=1;

DE=0;



while(1)

{

if(run)

{

sendserial('R');

init_run();

}

if(stop)

{

sendserial('S');

//init_stop();

}

if(query)

{

sendserial('Q');

//send_response();

}

}

}



void sendserial(char command)

{

int j;

*(pos_ack+3) = command;

sencnd = 0;

sendchr = 7;

for(j=0; j < 7; j++)

{

*(send_buf+j) = pos_ack[j];

DE = 1;

TI = 0;

}

}



void init_run(void)

{

run=0;

TH2=0x13;

TL2=0x88;

Iref=0xff;

Delay=5000;

TR2=1;

Stat=1;

}



/*void init_stop(void)

{



}



void send_response(void)

{



}

Thanks in advance.