如何PCI设备的Register的值

以下数据是我用工具读出的我的一个PCI设备的Register的值，请问用程序如何读到这样的数据？
PCI的BUS， Device, Function是如何定义的？windows和DOS的都行。谢谢！！！！！！！！！！
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B02 D01 F00: Realtek RTL8139 Fast Ethernet Adapter

Offset 00: EC 10 39 81 07 00 90 02 10 00 00 02 00 80 00 00
Offset 10: 01 C0 00 00 00 00 00 DF 00 00 00 00 00 00 00 00
Offset 20: 00 00 00 00 00 00 00 00 00 00 00 00 EC 10 39 81
Offset 30: 00 00 00 00 50 00 00 00 00 00 00 00 0B 01 20 40
Offset 40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 50: 01 00 02 76 00 00 00 00 00 00 00 00 00 00 00 00
Offset 60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset A0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset B0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset C0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset D0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset E0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset F0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

 用16进制的工具看就可以了~_~