Intel Extensible Firmware Interface Specification page 447

typedef struct s_pxe_pcc_config_info {
// This is the flag field for the PXE_DB_GET_CONFIG_INFO union.
// For PCC bus devices, this field is set to PXE_BUSTYPE_PCC.
PXE_UINT32 BusType;
// This identifies the PCC network device that this UNDI
// interface is bound to.
PXE_UINT16 Bus;
PXE_UINT8 Device;
PXE_UINT8 Function;
// This is a copy of the PCC configuration space for this
// network device.
union {
PXE_UINT8 Byte[256];
PXE_UINT16 Word[128];
PXE_UINT32 Dword[64];
} Config;
} PXE_PCC_CONFIG_INFO;
#pragma pack()
#pragma pack(1)
typedef union u_pxe_db_get_config_info {
PXE_PCI_CONFIG_INFO pci;
PXE_PCC_CONFIG_INFO pcc;
} PXE_DB_GET_CONFIG_INFO;
#pragma pack()
Version 1.02
32/64-bit UNDI Specification
12/12/00 429