NdisRawReadPortUchar macro (ndis.h)
NdisRawReadPortUchar reads a byte from a given I/O port on the NIC.
Syntax
void NdisRawReadPortUchar(
[in] Port,
[out] Data
);
Parameters
[in] Port
Specifies the I/O port. This address falls in a range that was mapped during initialization with NdisMRegisterIoPortRange.
[out] Data
Pointer to a caller-supplied variable in which this function returns a byte read in from the port.
Return value
None
Remarks
NdisRawReadPortUchar runs fast because it need not map a bus-relative I/O 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 NdisRawReadPortUchar (NDIS 5.1)) in Windows Vista. Supported for NDIS 5.1 drivers (see NdisRawReadPortUchar (NDIS 5.1)) in Windows XP. |
| Target Platform | Universal |
| Header | ndis.h (include Ndis.h) |
| IRQL | Any level |