//09 Initially display 9
//When switch 1 is pressed start displaying 9 to 0
//Continuously. When switch 2 is pressed stop display.
void setup() {
  // put your setup code here, to run once:
  direction();
}

void loop() {
  // put your main code here, to run repeatedly:
  code();

}

//****************************************
void direction()
{
  volatile char *dirf,*dirk,*dira;
   dirf = 0x30;  dirk = 0x107; dira = 0x21;
  *dirf = 0xFF; *dirk = 0x00; *dira = 0x01;

}
void delay_()
{
  volatile long i;
  for(i=0;i<300000;i++);
}
void code()
{
  volatile char *ink,*outa,x=0;
 ink = 0x106; outa = 0x20;
  
  while(1)
  {
    *outa = 0x01;
    if((*ink & 0x01) == 0x01)     {*outa = 0x00;start();delay_();}
    else if((*ink & 0x02)== 0x02) {*outa = 0x00;stop(); delay_();}
    else                          {*outa = 0x01;off();}

  }

}
void start()
{
  volatile char *outf;
  outf = 0x31;
*outf = 0x6F;delay_();
*outf = 0x7F;delay_();
*outf = 0x07;delay_();
*outf = 0x7D;delay_();
*outf = 0x6D;delay_();
*outf = 0x66;delay_();
*outf = 0x4F;delay_();
*outf = 0x5B;delay_();
*outf = 0x06;delay_();
*outf = 0x3F;delay_();
}
void stop()
{
  volatile char *outf;
  outf = 0x31;
  *outf = 0x80;delay_();
}
void off()
{
  volatile char *outf;
  outf = 0x31;
  *outf = 0x6F;
}