The VideoPortReadRegisterBufferUlong function reads a number of ULONG values from a mapped device memory range and writes them into a buffer.
VIDEOPORT_API VOID VideoPortReadRegisterBufferUlong( PULONG Register, PULONG Buffer, ULONG Count );
Pointer to the register. The given Register must be in a mapped memory-space range returned by VideoPortGetDeviceBase.
Pointer to a buffer into which the ULONG values are written.
Specifies the number of ULONG values to be written to the buffer.
The buffer must be large enough to contain at least the specified number of ULONG values.
Callers of VideoPortReadRegisterBufferUlong 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.
|Minimum supported client||Available in Windows 2000 and later versions of the Windows operating systems.|
|Header||video.h (include Video.h)|
|IRQL||See Remarks section.|