【摘要】 提出了“可预置计数限的计数逻辑”和“有暂停控制的双向计数器逻辑”,解决了VME总线主板所能处理的中断的频率与输入信号脉冲的频率不匹配的难题,消除了某些信号与系统时钟异步造成的准稳态;所设计的插件实现了VME总线程控流水线式发中断的功能.更多还原

【Abstract】 This paper introduces both "the counting logic with loadable port" and " the dual direction counting logic with pause port",which resolves the puzzle that the frequency of the interrupt dealed with by the VME master card couldn’t match with that of the input signal pulse,and will avoid the uncertain state caused by the asynchronicm beteen some signals and the system clock signal.The board we designed can send out interrupt request to the VME master under control of the programs更多还原