void setup() {
  // put your setup code here, to run once:
  volatile char *portf;
  portf=0x30;
  *portf=0xFF;
  volatile char *portk;
  portk=0x107;
  *portk=0xFF;

}

void output(char x)
{
    volatile char *out;
    out = 0x108;
    *out = 0x0F;
    out = 0X31;
    x=0x00;
    *out = x;
}



void loop() {
  // put your main code here, to run repeatedly:
  volatile long i,j,k,l;
  volatile char y;
  for(i=0;i<=9;i++)
  {
    for(j=0;j<=9;j++)
    {
      for(k=0;k<=9;k++)
      {
        for(l=0;l<=9;l++)
        {
          output(y);
          screen1(i);
          delay(10);
          output(y);
          screen2(j);
          delay(10);
          output(y);
          screen3(k);
          delay(10);
          output(y);
          screen4(l);
          delay(10);
          output(y);

        }
        
        
          
      }
          
          
    }
  }
}
 
  



  




  













void screen3(int i)
{
  volatile char *out;
  switch (i) {
    case 0:
      out = 0x108; *out = 0x0B; 
      out = 0x31;  *out = 0x3F; break;
    case 1:
      out = 0x108; *out = 0x0B; 
      out = 0x31; *out =  0x06; break;
    case 2:
      out = 0x108; *out = 0x0B; 
      out = 0x31; *out = 0x5B; break;
    case 3:
      out = 0x108; *out = 0x0B; 
      out = 0x31; *out = 0x4F; break;
    case 4:
      out = 0x108; *out = 0x0B; 
      out = 0x31; *out = 0x66; break;
    case 5:
      out = 0x108; *out = 0x0B; 
      out = 0x31; *out = 0x6D; break;
    case 6:
      out = 0x108; *out = 0x0B; 
      out = 0x31; *out = 0x7D; break;
    case 7:
      out = 0x108; *out = 0x0B; 
      out = 0x31; *out = 0x07; break;
    case 8:
      out = 0x108; *out = 0x0B; 
      out = 0x31; *out = 0x7F; break;
    case 9:
      out = 0x108; *out = 0x0B; 
      out = 0x31; *out = 0x67; break;
  }
}


void screen1(int i)
{
  volatile char *out;
  switch (i) {
    case 0:
      out = 0x108; *out = 0x0E; 
      out = 0x31;  *out = 0xBF; break;
    case 1:
      out = 0x108; *out = 0x0E; 
      out = 0x31; *out =  0x86; break;
    case 2:
      out = 0x108; *out = 0x0E; 
      out = 0x31; *out = 0xDB; break;
    case 3:
      out = 0x108; *out = 0x0E; 
      out = 0x31; *out = 0xEF; break;
    case 4:
      out = 0x108; *out = 0x0E; 
      out = 0x31; *out = 0xE6; break;
    case 5:
      out = 0x108; *out = 0x0E; 
      out = 0x31; *out = 0xED; break;
    case 6:
      out = 0x108; *out = 0x0E; 
      out = 0x31; *out = 0xFD; break;
    case 7:
      out = 0x108; *out = 0x0E; 
      out = 0x31; *out = 0x87; break;
    case 8:
      out = 0x108; *out = 0x0E; 
      out = 0x31; *out = 0xFF; break;
    case 9:
      out = 0x108; *out = 0x0E; 
      out = 0x31; *out = 0xE7; break;
  }
}


void screen2(int i)
{
  volatile char *out;
  switch (i) {
    case 0:
      out = 0x108; *out = 0x0D; 
      out = 0x31;  *out = 0x3F; break;
    case 1:
      out = 0x108; *out = 0x0D; 
      out = 0x31; *out =  0x06; break;
    case 2:
      out = 0x108; *out = 0x0D; 
      out = 0x31; *out = 0x5B; break;
    case 3:
      out = 0x108; *out = 0x0D; 
      out = 0x31; *out = 0x4F; break;
    case 4:
      out = 0x108; *out = 0x0D; 
      out = 0x31; *out = 0x66; break;
    case 5:
      out = 0x108; *out = 0x0D; 
      out = 0x31; *out = 0x6D; break;
    case 6:
      out = 0x108; *out = 0x0D; 
      out = 0x31; *out = 0x7D; break;
    case 7:
      out = 0x108; *out = 0x0D; 
      out = 0x31; *out = 0x07; break;
    case 8:
      out = 0x108; *out = 0x0D; 
      out = 0x31; *out = 0x7F; break;
    case 9:
      out = 0x108; *out = 0x0D; 
      out = 0x31; *out = 0x67; break;
  }
}



void screen4(int i)
{
  volatile char *out;
  switch (i) {
    case 0:
      out = 0x108; *out = 0x07; 
      out = 0x31;  *out = 0x3F; break;
    case 1:
      out = 0x108; *out = 0x07; 
      out = 0x31; *out =  0x06; break;
    case 2:
      out = 0x108; *out = 0x07; 
      out = 0x31; *out = 0x5B; break;
    case 3:
      out = 0x108; *out = 0x07; 
      out = 0x31; *out = 0x4F; break;
    case 4:
      out = 0x108; *out = 0x07; 
      out = 0x31; *out = 0x66; break;
    case 5:
      out = 0x108; *out = 0x07; 
      out = 0x31; *out = 0x6D; break;
    case 6:
      out = 0x108; *out = 0x07; 
      out = 0x31; *out = 0x7D; break;
    case 7:
      out = 0x108; *out = 0x07; 
      out = 0x31; *out = 0x07; break;
    case 8:
      out = 0x108; *out = 0x07; 
      out = 0x31; *out = 0x7F; break;
    case 9:
      out = 0x108; *out = 0x07; 
      out = 0x31; *out = 0x67; break;
  }
}