NdisRawWritePortBufferUchar macro (ndis.h)
NdisRawWritePortBufferUchar writes a specified number of bytes from a caller-supplied buffer to a given I/O port.
Syntax
void NdisRawWritePortBufferUchar(
[in] Port,
[in] Buffer,
[in] Length
);
Parameters
[in] Port
Specifies the I/O port. This address falls in a range that was mapped during initialization with NdisMRegisterIoPortRange.
[in] Buffer
Pointer to a caller-allocated resident buffer containing the bytes to be written.
[in] Length
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
| Requirement | Value |
|---|---|
| Minimum supported client | 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. |
| Target Platform | Universal |
| Header | ndis.h (include Ndis.h) |
| IRQL | Any level |