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Hi everyone, I am working in developing AV player in DM642 environment and Using the QDMA option for moving pixel data between onchip and external memory.The QDMA deals with now .. 8 bit element size.I had seen some where in the TI manuals that use of 32 bit element size will lead to code ptimization.But all is needed to transfer 8 bit pixel data for processing..Then how to optimize the data transfer? On finding the CPU usuage , the display shows 100%.IS there any way to list QDMA's or like chaining two or more QDMA instants and decrease the processing time? If QDMA can handle only one channel at a time, how can make use of EDMA with channel chainning? Kindly someone let me know the possibilities to effectively use QDMA .. I am not an expert in c64x stuff.It will be of a great help if someone show me off good start for me to tackle this.. Thanks in advance, Rama______________________________