#include <mega16.h>
#include <delay.h>        

#define digit1 PORTD.6      
#define digit2 PORTD.5      
                    
flash char digits[] = {      
0b11000000,                   //0
0b11111001,                   //1
0b10100100,                   //2
0b10110000,                   //3
0b10011001,                   //4
0b10010010,                   //5
0b10000010,                   //6
0b11111000,                   //7
0b10000000,                   //8
0b10010000,                   //9
0b10111111,                   //-
0b11111111                    //пусто
};                  
char digit_out[2], cur_dig;  
char tik;

unsigned int indication;    
                      
void recoding(void) {      
            
   if (indication<100) {              
                                        
       digit_out[0]=indication%10;  
       indication=indication/10;              
        digit_out[1]=indication%10;    
       }                                            
}                                        

interrupt [TIM0_OVF] void timer0_ovf_isr(void)
{    
    switch (cur_dig){
      
       case 0:{digit2=1;digit1=0;break;};  
       case 1:{digit1=1;digit2=0;break;};
    
    }  
    
    PORTA=digits[digit_out[cur_dig]];                    
                                                
    cur_dig++;                                  
                                                                
    if (cur_dig==2) cur_dig=0;                  
}

void main(void)
{

// Timer(s)/Counter(s) Interrupt(s) initialization
TIMSK=0x01;

#asm("sei")

  while (1)
                
     if(!PIND.1){                                        
     delay_ms(100);                                      
     tik++;                                              
     indication=tik;                                        
        if(indication>100) indication=100;          
     recoding();                                            

     }
     if(!PIND.2){                                    
     delay_ms(100);                                  
     tik--;                                              
     indication=tik;                                      
        if(indication<0) indication=0;          
     recoding();                                    
     }
}
  }

unsigned int indication;

void test(void)
{
  static volatile __eeprom char x;
  char cnt = 0;
  long cycle = 0;

  do
  {
      x = ++cnt;
      cycle += 1;
  } while (x == cnt);

  printf("eeprom resource is %d cycles\n", cycle);
}

eeprom unsigned int indication;

// Глобальные переменные
eeprom unsigned char eeVar; // Резервируем место для переменной в EEPROMe
...
void main(void)
{
  ...
  eeVar = 0x12;  // сохраняем значение
  ...
  x = a + b * eeVar; // Используем сохраненное значение при вычислении
}

// Глобальные переменные
eeprom unsigned char eeVar = 0x34; // Резервируем место для переменной в EEPROMe
...

;     148 unsigned char TestEE(unsigned char n)
;     149 {
_TestEE:
;     150   sacrifice = n;
;    n -> Y+0
    LD   R30,Y
    LDI  R26,LOW(_sacrifice)
    LDI  R27,HIGH(_sacrifice)
    RCALL __EEPROMWRB
;     151

__EEPROMWRB:
    SBIC EECR,EEWE
    RJMP __EEPROMWRB
    IN   R25,SREG
    CLI
    OUT  EEARL,R26
    SBI  EECR,EERE
    IN   R24,EEDR
    CP   R30,R24
    BREQ __EEPROMWRB0
    OUT  EEDR,R30
    SBI  EECR,EEMWE
    SBI  EECR,EEWE
__EEPROMWRB0:
    OUT  SREG,R25
    RET

;
_TestEE:
    LD   R30,Y                             ; байт в R30
    LDI  R26,LOW(_sacrifice)
    LDI  R27,HIGH(_sacrifice)       ; адрес в R27:R26
    RCALL __EEPROMWRB

__EEPROMWRB:
    SBIC EECR,EEWE
    RJMP __EEPROMWRB             ; подождать пока закончится прошлая запись
    IN   R25,SREG
    CLI
    OUT  EEARL,R26                   ; адрес из R26, r27 не пригодился :)
    SBI  EECR,EERE          
    IN   R24,EEDR                      ; почитали
    CP   R30,R24
    BREQ __EEPROMWRB0          ; ВЫЙТИ БЕЗ ЗАПИСИ, если записываем то же самое, что было
    OUT  EEDR,R30
    SBI  EECR,EEMWE
    SBI  EECR,EEWE                  ; если не то же самое, то записать
__EEPROMWRB0:
    OUT  SREG,R25
    RET

;     152   return (sacrifice == n);
    LDI  R26,LOW(_sacrifice)
    LDI  R27,HIGH(_sacrifice)
    RCALL __EEPROMRDB
    LD   R26,Y
    RCALL __EQB12
    RJMP _0x78
;     153 }
;     154