NdisReadRegisterUchar (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 x has been deprecated and is superseded by NDIS 6.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.

NdisReadRegisterUchar is called by the NIC driver to read a UCHAR from a memory-mapped device register.

Syntax


VOID NdisReadRegisterUchar(
  _In_  PUCHAR Register,
  _Out_ PUCHAR Data
);

Parameters

Register [in]

Pointer to the memory-mapped register. This virtual address must fall within a range returned by an initialization-time call to NdisMMapIoSpace.

Data [out]

Pointer to the caller-supplied variable in which this function returns the UCHAR read from Register.

Return value

None

Remarks

If a driver calls this function, its NIC's device registers must be mapped to noncached memory during driver initialization.

Requirements

Target platform

Desktop

Version

See NdisReadRegisterUchar.

Header

Ndis.h (include Ndis.h)

IRQL

Any level

See also

MiniportInitialize
NdisMMapIoSpace
NdisReadRegisterUlong
NdisReadRegisterUshort
NdisWriteRegisterUchar

 

 

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