NdisRawWritePortBufferUchar

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

VOID NdisRawWritePortBufferUchar(
IN ULONG Port, 
IN PUCHAR Buffer, 
IN ULONG Length );

Parameters

• Port
  Specifies the I/O port. This address falls in a range that was mapped during initialization with the NdisMRegisterIoPortRange function.
• Buffer
  Pointer to a caller-allocated resident buffer containing the bytes to be written.
• Length
  Specifies the number of bytes to write to the I/O port.

Remarks

An network adapter driver calls this function to transfer a sequence of bytes, one at a time, to its network adapter.

This function runs significantly faster than the NdisImmediateWritePortBufferUchar function because it need not map a bus-relative port address onto a host-dependent logical port address at every call.

Requirements

Note   This API is part of the complete Windows CE OS package as provided by Microsoft. The functionality of a particular platform is determined by the original equipment manufacturer (OEM) and some devices may not support this API.

See Also

NdisMRegisterIoPortRange, NdisRawReadPortBufferUchar, NdisRawWritePortBufferUlong, NdisRawWritePortBufferUshort, NdisRawWritePortUchar

 Last updated on Tuesday, July 13, 2004

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