Verifying device for error diagnosis in multiprocessor systems, in particular in multimicroprocessor systems

摘要

The invention relates to a testing device for fault diagnosis in multiple computer systems, particularly in multi-microcomputer systems in which to be considered in the failure diagnosis signal voltages on the system bus by indirectly controlled by this display are made as optical signals recognizable facilities. were previously for fault diagnosis and fault isolation oscilloscope, emulators and logic analyzers as aids available. Known to be an oscilloscope, an emulator is little to interpret the bus signals of a microcomputer, not suitable. A logic analyzer would have to cover the number of its channels the full bus width. The invention has for its object to provide a test apparatus I, by means of which the disadvantages and shortcomings as given above can be eliminated. To achieve this object a testing device is proposed in which all bus signals in accordance with their concerning each present state and the most recently active BEEN bus signal a Bussignalgruppe, such as the interrupt signals, optically be displayed. Address and data information is visualized with hexadecimal display _I blocks. Needle pulses appear time expanded by means of a retriggerable monoflop.