.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