#define	GPBCON		(*(volatile unsigned long *)0x56000010)#define	GPBDAT		(*(volatile unsigned long *)0x56000014)#define	GPB7_out	(1<<(7*2))#define	GPB8_out	(1<<(8*2))#define	GPB9_out	(1<<(9*2))#define	GPB10_out	(1<<(10*2))void wait(unsigned long dly){	for(; dly > 0; dly--);}int main(){	unsigned long i = 0;	GPBCON	 = GPB7_out|GPB8_out|GPB9_out|GPB10_out;	while(1){		wait(30000);		GPBDAT = (~(i<<7));		if(++i == 16)			i = 0;	}	return 0;}