VOID
    NdisReadPortUchar(
        IN NDIS_HANDLE NdisAdapterHandle,
        IN ULONG Port,
        OUT PUCHAR Data
        );
NdisReadPortUchar is called by the NIC driver to read a UCHAR from its NIC’s I/O port.
Callers of NdisReadPortUchar can be running at any IRQL.
NdisRawReadPortUchar, NdisReadPortBufferUchar, NdisWritePortUchar