AHD_39BIT_ADDRESSING
ahd->flags |= AHD_39BIT_ADDRESSING;
(ahd->flags & AHD_39BIT_ADDRESSING)
/*lowaddr*/ahd->flags & AHD_39BIT_ADDRESSING
if ((ahd->flags & AHD_39BIT_ADDRESSING) != 0) {
if ((ahd->flags & (AHD_39BIT_ADDRESSING|AHD_64BIT_ADDRESSING)) != 0) {
return ((ahd->flags & AHD_39BIT_ADDRESSING) != 0);