ldi r28, 100	;Nota de la asignatura de Est.Computadores [0-150]

ldi r20, 'c'
push r20
call pasar_a_ayuscula
pop r20

nop
nop


pasar_a_ayuscula:
	; y <- SP
	in yh, sph
	in yl, spl
	push r16
	ldd r16, y+3
	cpi r16, 'a'
	brlo ME_SALTO_LA_CONVERSION
	cpi r16, 'z'+1  ;90+1 = 91
	brsh ME_SALTO_LA_CONVERSION
	subi r16, 32
	ME_SALTO_LA_CONVERSION:
	std y+3, r16
	pop r16
	ret