EN1_MULT_SHIFT
outb_p(ei_local->mcfilter[i], e8390_base + EN1_MULT_SHIFT(i));
ei_outb_p(ei_local->mcfilter[i], e8390_base + EN1_MULT_SHIFT(i));
if (ei_inb_p(e8390_base + EN1_MULT_SHIFT(i)) != ei_local->mcfilter[i])