NdisRawWritePortBufferUchar - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers
// ndis.h

void NdisRawWritePortBufferUchar(
  [in] Port,
  [in] Buffer,
  [in] Length
);
View the official Windows Driver Kit DDI reference

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Windows Driver Kit DDI reference (nf-ndis-ndisrawwriteportbufferuchar)

NdisRawWritePortBufferUchar macro

Description

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

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.

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.

See also

MiniportInitializeEx

NdisMRegisterIoPortRange

NdisRawReadPortBufferUchar

NdisRawWritePortBufferUlong

NdisRawWritePortBufferUshort

NdisRawWritePortUchar