| 摘要 |
PROBLEM TO BE SOLVED: To efficiently utilize a hardware resource. SOLUTION: This digital signal processing circuit following one embodiment of this invention is provided with an instruction memory for storing an instruction code including at least one instruction, and for outputting the instruction code according to an output instruction, an extension instruction storing part for storing extension instructions, a selecting part for, when a selection code for selecting the extension instruction stored in the extension instruction storing part is included in the instruction code outputted from the instruction memory, selecting the extension instruction corresponding to the selection code from the extension instruction storing part and a decoder for interpreting the instruction included in the instruction code and the extension instruction selected by the selecting part, and for generating a control signal for executing the instruction and the extension instruction. COPYRIGHT: (C)2006,JPO&NCIPI
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