.include "m32def.inc"
    
      ldi   r20,0x00
      out   ddrb,r20  
    
      clr   r16  
      clr   r17 
      clr   r18 
  
      in    r20,pinb  
      cpi   r20,75  
      brsh  same_hi
              
      mov   r18,r20    
      rjmp  cntnu    
  
  same_hi:        
      brne  hi    
        
      mov   r19,r20 
      rjmp  cntnu  
  hi:            
      mov   r17,r20
  
  cntnu: