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DM8168 DVRRDK4.0上怎样在DSP上做更高效的内存拷贝?

如果数据量小,<100单位,自己写内存拷贝函数,然后利用软件流水优化?

然后数据量大,用DMA?但是8168 DVRRDK4.0上怎么用DMA传输?

谢谢!