| 摘要 |
PURPOSE:To realize an automatic monitoring by converting an address to an address data in a CPU through a data bus line of an externally fitted memory, and extracting a corresponding data in its built-in memory by loading it on an address bus. CONSTITUTION:In an automobile engine controlling microcomputer, the first memory 2 contained in a central processor 7 provided with the second memory 8 which can be attached and detached is monitored by a data collecting CPU17. In that case, the CPU17 is constituted of an address storage means 30 and a monitoring means 33, and connected to each data and address bus 8a, 8b of the memory 8 through a transfer means 31. In this state, the means 31 transfers an address in the means 30 at a prescribed timing to a data bus 3 of the device 7 through the bus 8a, converts it to an address data by a control means 32, loads a corresponding data in the memory 2 on an address bus 4, extracts a data by the means 33 through the bus 8b, and stops the means 32. |
