| 摘要 |
<p>PURPOSE:To provide the microcomputer system for shortening interruption start processing time. CONSTITUTION:This microcomputer system is provided with a data transmission/reception part 13 for a peripheral controller to exchange data with the outside, read/write control part 14 for controlling the timing of data exchange between the data transmission/reception part 13 and a microcomputer, data transmission/ reception control part 14 for controlling the transmission/reception timing of the data transmission/reception part 13 through an external transmission/ reception control signal 104 to be inputted from another controller provided in the microcomputer system, for encoding any prescribed transmission/reception interruption cause and for outputting it, and memory 15 for providing processing start address information corresponding to the transmission/reception interruption cause to the microcomputer. At the time of interruption processing start, the processing start address information corresponding to the transmission/ reception interruption cause outputted from the memory 15 is sent through a data bus 20 to the microcomputer.</p> |
