#include <reg51.h>		/* Include x51 header file */
sbit test = P1^0;		  	 		

void delay(k)			/* mSecond Delay function for Xtal 11.0592 MHz */
{
	int i,j;
	for (i=0;i<k;i++)
		for (j=0;j<112;j++);
}

void ExtInt_Init()		/* External interrupt initialize */
{
	IT0 = 1;      		/* Interrupt0 on falling edge */
	EX0 = 1;      		/* Enable External interrupt0 */
	IT1 = 1;      		/* Interrupt1 on falling edge */
	EX1 = 1;      		/* Enable External interrupt1 */
	EA  = 1;		/* Enable global interrupt */
	IP = 0x01;		/* Set highest priority for Ext. interrupt0 */
}
											
void External0_ISR() interrupt 0 /* External int0 ISR */
{
	PCON = 0x00;		 /* Disable Idle & Power Down mode */
}

void External1_ISR() interrupt 2 /* External int1 ISR */
{
	PCON = 0x01;		 /* Enable Idle mode */
				 /* Enable Power Down mode by PCON = 0x02; */
}

void main()
{
  ExtInt_Init(); 
	while(1)		 /* Toggle P1.0 continuous */
	{
		test = 0;
		delay(30);
		test = 1;
		delay(30);
	}
	
}