NdisRawWritePortBufferUchar

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

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

Parameters

Port

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

Buffer

Points 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.

Comments

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

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

Callers of NdisRawWritePortBufferUchar can run at any IRQL.

See Also

MiniportInitialize, NdisMRegisterIoPortRange, NdisRawReadPortBufferUchar, NdisRawWritePortBufferUlong, NdisRawWritePortBufferUshort, NdisRawWritePortUchar