FETCHB	106 cycles - 34
FETCHW	140 cycles - 34
PUTB	106 cycles - 34
PUTW	140 cycles - 34
POPW	 60 cycles -  0
PUSHW	 42 cycles -  0
FETCHBI	  8 cycles -  0
FETCHWI	 42 cycles -  0

F_INC_B	108 cycles
F_DEC_B	 80 cycles
F_INC_W	  4 cycles
F_DEC_W	  4 cycles

done:
	move.b	(epc)+,done+whatever(a5)	; 16
	jmp	#value(a4)			; 10