.ORG 0
LDI R16,HIGH(RAMEND)
OUT SPH,R16
LDI R16,LOW(RAMEND)
OUT SPL,R16
LDI R16,0xFF
OUT DDRB,R16
BACK:
COM R16
OUT PORTB,R16
CALL DELAY
RJMP BACK
DELAY:
LDI R20,16
L1: LDI R21,200
L2: LDI R22,250
L3:
NOP
NOP
DEC R22
BRNE L3
DEC R21
BRNE L2
DEC R20
BRNE L1
RET