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再BIOS系统下,利用了TI的视频驱动实现视频扑捉以后,需要再一个VP口添加232串行通信功能.想使用DMA方式, 但是由于DMA中断被集合进了视频驱动中(Mini Driver 层).那串行口的中断处理函数如何实现被DM642的DMA中断调用呢?
如何在VP口添加232功能的？
