AHD_EXTENDED_TRANS_A
| AHD_EXTENDED_TRANS_A|AHD_STPWLEVEL_A;
ahd->flags &= ~AHD_EXTENDED_TRANS_A;
ahd->flags |= AHD_EXTENDED_TRANS_A;
extended = (ahd->flags & AHD_EXTENDED_TRANS_A) != 0;