There is provided a method of controlling direct memory access for a digital signal-processing system. Direct memory access (DMA) instructions for executing data transfer by direct memory access between a data memory storing data and an external device are provided in a program, together with arithmetic...http://www.google.de/patents/US5765025?utm_source=gb-gplus-sharePatent US5765025 - Digital signal processor with on board program having arithmetic instructions and direct memory access instructions for controlling direct memory access thereof 
