DDRA=&b11111111
DDRB=&b1011

PORTB=&b0011
PORTA=0

MCUCR.1=1
SREG.7=1
GIMSK.6=1
DIM tmp as Integer

ON INT0 bass
DO
   IF tmp=0 THEN
      PORTA=&b10101010
      waitms 100
      tmp=tmp+1
   ELSE
      IF tmp=1 THEN
         PORTA=&b00001111
         waitms 100
         tmp=tmp+1
      ELSE
         IF tmp=2 THEN
            PORTA=&b01100000
            waitms 100
            tmp=tmp+1
         ELSE
            PORTA=0
         ENDIF
      ENDIF
   ENDIF
   rem PORTB=&b0010
   rem wait 1
   rem PORTB=&b0001
   rem wait 1

   rem IF PINB.2 = 1 THEN
   rem   tmp=tmp
   rem ENDIF

   rem IF tmp = 1 THEN
   rem   PORTB.0=1
   rem   PORTB.1=0
   rem ELSE
   rem   PORTB.1=1
   rem   PORTB.0=0

   rem ENDIF
   rem wait 1
LOOP
END

bass:
tmp=0
PORTA=&b10101000
waitms 10
return


rem koniec programu bassa komputera