uint8_t cyc;
volatile uint8_t mill;
//volatile int8_t dif;
//uint8_t cyc;
//int8_t dif;
//volatile uint8_t mill;
byte x;
int8_t xdif;
//----------------------------------------------------
void setup()

{
  Serial.begin(9600);
    pinMode(13, OUTPUT);
}

//----------------------------------------------------
void loop(){
//Serial.println(uint8_t(1-3));
//Serial.println(int8_t(1-3));
 cyc+=10;
  while(1){
    mill= (uint8_t(millis()));
     int8_t dif=int8_t(cyc-(uint8_t(millis())));
xdif=dif;
     if (int8_t(cyc-(uint8_t(millis())))<=0){break;}
  }
  
  Serial.println( xdif);
    asm("nop");
    //if (dif<0){goto L000;}
    goto L001;
    L000:;//Serial.println(dif);
    asm("nop");
    L001: asm("nop");
    digitalWrite(13,x);
    x^=1;
    asm("nop");
  //Serial.println(uint8_t(millis()));
 // Serial.print("      ");
  //Serial.print(cyc);
  //Serial.print("      ");
  //Serial.println(dif);
  //Serial.print("      ");
 // Serial.print("      ");
  //Serial.println(uint8_t((cyc+10)-(uint8_t(cyc))));
  //Serial.println(((cyc+10)-cyc));
  //delay(200);
  
}