The VideoPortWritePortBufferUchar function writes a number of bytes to a mapped I/O port.
VIDEOPORT_API VOID VideoPortWritePortBufferUchar( PUCHAR Port, PUCHAR Buffer, ULONG Count );
Pointer to the port. The given Port must be in a mapped I/O-space range returned by VideoPortGetDeviceBase.
Pointer to a buffer containing the bytes to be written.
Specifies the number of bytes to be transferred to the adapter.
Callers of VideoPortWritePortBufferUchar can be running at any IRQL, provided that the memory pointed to by the Buffer parameter is resident and that pointed to by the Port parameter is resident, mapped device memory.
|Windows version||Available in Windows 2000 and later versions of the Windows operating systems.|
|Header||video.h (include Video.h)|
|IRQL||Any level (see Remarks section)|