void intit_tmr();

void setup() {
  // put your setup code here, to run once:
 volatile char *ddr =(char*)0x30;
*ddr = 0x01;
intit_tmr();
}

void intit_tmr(){
volatile  char *controlReg=0x80;
volatile  char *pre= 0x81;

*controlReg=0;
*pre=0x0c;
//*msk=0x02;
}

void rukhDoSec(){
volatile  short *tmr= 0x84;
volatile  short *cmp= 0x88;
*cmp=62500;
*tmr=0;
  while((*cmp)!=(*tmr));
}

void loop() {
  // put your main code here, to run repeatedly:
 volatile char *op=(volatile char*)0x31;
(*op)^=(0x01);
rukhDoSec();
(*op)^=(0x02);
  rukhDoSec();

}