AHC_RESET_BUS_B
ahc->flags |= AHC_RESET_BUS_B;
ahc->flags &= ~(AHC_RESET_BUS_A|AHC_RESET_BUS_B);
if ((ahc->flags & AHC_RESET_BUS_B) != 0) {
if ((ahc->flags & (AHC_RESET_BUS_A|AHC_RESET_BUS_B)) != 0) {