CAS_ROM_READ_2
if (CAS_ROM_READ_2(sc, PCI_ROMHDR_SIG) != PCI_ROMHDR_SIG_MAGIC ||
(i = CAS_ROM_READ_2(sc, PCI_ROMHDR_PTR_DATA)) <
CAS_ROM_READ_2(sc, i + PCI_ROM_VENDOR) != pci_get_vendor(dev) ||
CAS_ROM_READ_2(sc, i + PCI_ROM_DEVICE) != pci_get_device(dev) ||
(j = CAS_ROM_READ_2(sc, i + PCI_ROM_PTR_VPD)) <