#include <at89x52.H>              // SFR definition header file
#include <stdio.h>                 // prototype declarations for I/O functions
#include <rtx51tny.h>                 /* RTX-51 tiny functions & defines      */
#include "function.h"
#include "SystemEvent.h"
#include "UART.h"
#include "ExtVar.h"

void InitINT1(void){ 
  
   EX1=1;                        /* 1=Enable External interrupt 0 */
   EA = 1;                       /* global interrupt enable     */                                
}  
 
void INTx1 (void) interrupt 2 using 2 {                 
          	isr_send_signal(2);        EX1=0;       
}