 
 
   DEBUGLED_OFF;
-  for (;;);
+  for (;;) {
+      delay(150);
+      AyRegister(AY_CH_A_FINETUNE, rand()&0xFF);
+//      AyRegister(AY_CH_A_COARSETUNE, 1);
+  }
 }

  LcdInit();
  delay(500);

  LcdXY(0,0);LcdString("Mount=");
  res=pf_mount(&fs);
  LcdCharacter(48+res);

  // PC6 o AY_RESET#   Digital Pin 5 (PWM)
  // PC7 o AY_CLK      Digital Pin 13 (PWM)
  DDRC=0x00 | (1<<6) | (1<<7);
  PORTC=0x00;

  // PD0 o AY_Data0    Digital pin 3 (SCL)(PWM)
  // PD1 o AY_Data1    Digital pin 2 (SDA)
