NdisRawReadPortUchar (NDIS 5.1) 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 x has been deprecated and is superseded by NDIS 6.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.
NdisRawReadPortUchar reads a byte from a given I/O port on the NIC.
Syntax
VOID NdisRawReadPortUchar(
_In_ ULONG_PTR Port,
_Out_ PUCHAR Data
);
Parameters
Port [in]
Specifies the I/O port. This address falls in a range that was mapped during initialization with NdisMRegisterIoPortRange.Data [out]
Pointer to a caller-supplied variable in which this function returns a byte read in from the port.
Return value
None
Remarks
NdisRawReadPortUchar runs faster than NdisImmediateReadPortUchar because it need not map a bus-relative I/O port address onto a host-dependent logical port address at every call.
Requirements
Target platform |
Desktop |
Version |
See NdisRawReadPortUchar. |
Header |
Ndis.h (include Ndis.h) |
IRQL |
Any level |
See also