| 摘要 |
A digital computation integrated circuit has instruction memory for storing an instruction data, a store address designating part for designating a storing address of the instruction data in the instruction memory and for outputting the instruction data; an instruction decoder for receiving the instruction data outputted from the instruction memory and for converting the instruction data into a control signal to be outputted; an address determining part for determining an address necessary to reproduce history of a program when decoding result by the instruction decoder is found that the instruction data represent nonsequential progress of a program; and an address memory for storing the address necessary to reproduce history of a program in a storing address thereof designated by the storing address determining part.
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