NdisRawWritePortBufferUchar function

NdisRawWritePortBufferUchar writes a specified number of bytes from a caller-supplied buffer to a given I/O port.

Syntax


VOID NdisRawWritePortBufferUchar(
  _In_  ULONG_PTR Port,
  _In_  PUCHAR Buffer,
  _In_  ULONG Length
);

Parameters

Port [in]

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

Buffer [in]

Pointer to a caller-allocated resident buffer containing the bytes to be written.

Length [in]

Specifies the number of bytes to write to the I/O port.

Return value

None

Remarks

A miniport driver calls NdisRawWritePortBufferUchar to transfer a sequence of bytes, one at a time, to a NIC.

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

Requirements

Version

Supported for NDIS 6.0 and NDIS 5.1 drivers (see NdisRawWritePortBufferUchar (NDIS 5.1)) in Windows Vista. Supported for NDIS 5.1 drivers (see NdisRawWritePortBufferUchar (NDIS 5.1)) in Windows XP.

Header

Ndis.h (include Ndis.h)

IRQL

Any level

See also

MiniportInitializeEx
NdisMRegisterIoPortRange
NdisRawReadPortBufferUchar
NdisRawWritePortBufferUlong
NdisRawWritePortBufferUshort
NdisRawWritePortUchar

 

 

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