NdisRawReadPortUchar macro

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

Syntax

void NdisRawReadPortUchar(
   Port,
   Data
);

Parameters

Port

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

Data

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

Return Value

None

Remarks

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

Requirements

   
Minimum supported client Supported for NDIS 6.0 and NDIS 5.1 drivers (see NdisRawReadPortUchar (NDIS 5.1)) in Windows Vista. Supported for NDIS 5.1 drivers (see NdisRawReadPortUchar (NDIS 5.1)) in Windows XP.
Target Platform Universal
Header ndis.h (include Ndis.h)
IRQL Any level

See Also

MiniportInitializeEx

NdisMRegisterIoPortRange

NdisRawReadPortBufferUchar

NdisRawReadPortUlong

NdisRawReadPortUshort

NdisRawWritePortUchar