| 摘要 |
PURPOSE:To attain efficient search of location of fault by recording a content of an LAR into a memory when a designated instruction in advance appears and a state coincident with a preset condition occurs. CONSTITUTION:An instruction code set to an instruction register 2 and a content of a register 1 to which a specific instruction code is set are compared by a comparator circuit 3, and when they are coincident, the content of the LAR5 is set to a write register 6 and written in the memory. On the other hand, when a condition coincident with the cnodition set to a condition set section 7 is detected by a detecting circuit 8, the content of the ALR5 is set to a write register 6 also in this case and written in the memory. A data displaying that this data is due to the coincidence of set conditions is written together in this case. In reading the content of the said memory at program debugging and fault research, the dynamic program flow and the process of occurrence of a specific event are analyzed. |
