AHC_PCI
ahc->chip = AHC_AIC7860 | AHC_PCI;
if ((ahc->chip & AHC_PCI) == 0)
if ((ahc->chip & AHC_BUS_MASK) == AHC_PCI
if ((ahc->chip & AHC_PCI) != 0)
if ((ahc->chip & AHC_PCI) != 0) {
if ((ahc->chip & AHC_PCI) != 0) {
if ((ahc->chip & AHC_BUS_MASK) < AHC_PCI)
if ((ahc->chip & AHC_PCI) != 0
ahc->chip |= AHC_PCI;