NdisReadPortBufferUchar function
Note NDIS 5. x has been deprecated and is superseded by NDIS 6. x. For new NDIS driver development, see Network Drivers Starting with Windows Vista. For information about porting NDIS 5. x drivers to NDIS 6. x, see Porting NDIS 5.x Drivers to NDIS 6.0.
NdisReadPortBufferUchar is called by the miniport driver to read a specified number of UCHARs from a NIC into a buffer.
Syntax
VOID NdisReadPortBufferUchar(
_In_ NDIS_HANDLE NdisAdapterHandle,
_In_ ULONG Port,
_Out_ PUCHAR Buffer,
_In_ ULONG Length
);
Parameters
NdisAdapterHandle [in]
Specifies the handle that the NDIS interface library associates with the network interface card.Port [in]
Specifies the I/O port.Buffer [out]
Pointer to the caller-supplied buffer in which this function writes the UCHAR values read from Port.Length [in]
Specifies the number of pieces of data to read from Port to Buffer.
Return value
None
Remarks
NdisReadPortBufferUchar reads sequentially each byte from the port. It determines how the host accesses the I/O port and processes the read request accordingly.
Requirements
Target platform |
Desktop |
Version |
Not supported for NDIS 6.0 drivers in Windows Vista. Supported for NDIS 5.1 drivers (see NdisReadPortBufferUchar (NDIS 5.1)) in Windows XP. |
Header |
Ndis.h (include Ndis.h) |
IRQL |
Any level |
See also