Expand Minimize

VideoPortWriteRegisterBufferUchar function

The VideoPortWriteRegisterBufferUchar function writes a number of unsigned bytes to a mapped register.

Syntax


VOID VideoPortWriteRegisterBufferUchar(
  PUCHAR Register,
  _In_  PUCHAR Buffer,
  ULONG Count
);

Parameters

Register

Pointer to the register. The given Register must be in a mapped memory-space range returned by VideoPortGetDeviceBase.

Buffer [in]

Pointer to a buffer containing the bytes to be written.

Count

Specifies the number of bytes to be transferred to the adapter.

Return value

None

Remarks

A miniport driver's HwVidInterrupt or HwVidSynchronizeExecutionCallback function can call VideoPortWriteRegisterBufferUchar.

Callers of VideoPortWriteRegisterBufferUchar can be running at any IRQL, provided that the memory pointed to by the Buffer parameter is resident and that pointed to by the Register parameter is resident, mapped device memory.

Requirements

Version

Available in Windows 2000 and later versions of the Windows operating systems.

Header

Video.h (include Video.h)

Library

Videoprt.lib

DLL

Videoprt.sys

IRQL

Any level (see Remarks section)

See also

VideoPortGetDeviceBase

 

 

Send comments about this topic to Microsoft

Show:
© 2014 Microsoft