Texas Instruments TNETE100A, TNETE211 manual Initializing, Finding the Network Interface Card NIC

Initializing

3.1 Initializing

To initialize or to set the starting values for ThunderLAN, the device must pro- ceed through a specific sequence of steps. This procedure assumes that the autoconfiguration step of loading from the EEPROM to the PCI configuration registers has already taken place.

3.1.1Finding the Network Interface Card (NIC)

A PCI BIOS call must be performed to determine if there is a PCI card present with a ThunderLAN controller. A ThunderLAN controller should have a ThunderLAN device ID and should also have a vendor ID. The example code uses the TI vendor ID. The call to find the board is:

#define TLAN_DEVICEID	0x0500	//PCI	TLAN device ID)
...
#define TI_VENDORID	0x104C	//PCI	vendor ID
assigned to TI

...

if (PciFindDevice(TLAN_DEVICEID, TI_VENDORID, 0, &nic.DevId))

error(ºThe PCI Bios can't find a TLAN boardº);

PciFindDevice is further broken down to an O/S call to the PCI interrupt service routines in the BIOS formatted as:

//±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±

//PCIFindDevice ± Find PCI device

//Parameters:

//	DeviceID	WORD The device ID
//	VendorID	WORD The vendor ID
//	Index	WORD index (normally 0, use when more
than	1 device)
//	pDev	WORD* Where to put the device id
//

//Return val:

//	int	0 if successful. See std return codes
in	header

//±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±

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