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Function RTT_BIOS_FindDevice

This function returns the location of PCI devices that have a specific device ID and vendor ID.

int RTT_BIOS_FindDevice(WORD   Vendor, 
                        WORD   DeviceID, 
                        int    Index, 
                        BYTE * Bus, 
                        BYTE * DeviceFunc);

Parameters

Vendor

Vendor ID to search for.

DeviceID

Device ID to search for.

Index

Zero-based index of the device. For example, Index 1 would return the second device with the given Vendor and Device ID.

Bus

Pointer to the returned PCI bus number.

DeviceFunc

Pointer to the returned device number in bits 7 .. 3 and the function number in bits 2 .. 0.

return value

RTT_BIOS_SUCCESSFUL or an error code, see section PCI BIOS.

All devices having the same vendor ID and device ID can be found by making successive calls to this function starting with Index set to zero and incrementing it until the return code is RTT_BIOS_DEVICE_NOT_FOUND.

PCI BIOS

Function RTT_BIOS_NextDevice

Function RTT_BIOS_FindClassCode