NdisRawReadPortUchar

VOID
    NdisRawReadPortUchar(
        IN ULONG Port,
        OUT PUCHAR Data
        );

NdisRawReadPortUchar reads a byte from a given I/O port on the NIC.

Parameters

Port

Specifies the I/O port. This address falls in a range that was mapped during initialization with NdisMRegisterIoPortRange.

Data

Points to a caller-supplied variable in which this function returns a byte read in from the port.

Comments

NdisRawReadPortUchar runs faster than NdisImmediateReadPortUchar because it need not map a bus-relative I/O port address onto a host-dependent logical port address at every call.

Callers of NdisRawReadPortUchar can run at any IRQL.

See Also

MiniportInitialize, NdisMRegisterIoPortRange, NdisRawReadPortBufferUchar, NdisRawReadPortUlong, NdisRawReadPortUshort, NdisRawWritePortUchar