微型机实时控制系统的设计,常常要遇到多中断源处理,这种多中断源控制系统的优化设计,可使得微型机能承担全系统大量的中断处理任务且具有良好的实时响应性。本文介绍了一个 S—100总线标准的中断控制部件的设计,它使得一个本来只具备8个向量中断能力的 CPU(如 INTEL8080,国产051)能响应128个向量中断。阐明了该中断板电路工作原理,并给出了逻辑框图,程序及程序流程图。 The design of real-time microcomputer control system often encounters multi-interrupt source processing. The optimized design of this multi-interrupt source control system can make the micro-processor take a large amount of interrupt processing tasks and has good real-time responsiveness. This article describes the design of an S-100 bus standard interrupt control unit that enables a CPU capable of interrupting only eight vectors (such as the INTEL8080, native 051) to respond to 128 vector interrupts. Clarified the interrupt plate circuit works, and gives the logic diagram, program and program flow chart.