I have gone through with the example applets provided in Visual applets installation directory and found an example in the path "C:\Program Files\SiliconSoftware\VisualApplets_3.2\Examples\Processing\CoProcessor\CoprocessorMedian" and the particular operator 'DMA From PC' has used in it. I Like to use the same feature in Marathon VCL framegrabber and noticed that the mentioned operator is only available for either VD1/VD4 framegrabbers. I wonder why it is not available for latest framegrabbers. Is there any alternative available? Can you please reply on this?