To reduce interrupt response time and improve system performance.
为提高系统实时性,缩短中断响应时间,提出了一种基于映像寄存器的操作系统内核实现方案。
The author gives an implementation of the ARINC429 data bus communication module,and particularly analyses the interrupt response timing.
针对现代导航系统的需要,设计并实现了一种基于TMS320C6713和SC28L198的新型高性能导航计算机,该系统集成了高精度AD采集、8路异步串口通讯以及ARINC 429通讯等多源数据采集通讯功能;重点阐述了ARINC429总线通讯模块的实现方法,详尽分析了中断响应的时序处理,通过对中断信号的判断与处理,利用CPLD实现了429模块4收2发的全双工通讯;该导航系统经过检验,可完整实时的收发数据,减轻了DSP的通讯负担,提高了系统的运行效率;该系统已经在某型无人机半物理仿真导航系统中得到成功应用。
To the deficiency of the existing method,this paper has proposed a method,which use backup-buffer to save the status of pipeline,can improve the efficiency of interrupt response.
针对现有精确中断实现方法的不足,提出了一种采用备份缓冲区保存流水线现场的精确中断实现方法,可以显著提高中断响应的效率。
This paper analyses two real-time performance items which should be tested and measured in order to evaluate a hard real-time system:the interrupt response time and contexts switch time,and researches real-time extension RTX under Windows 2000(XP)aiming at its real-time performance.
分析评估强实时操作系统的两个重要性能指标:中断响应时间、上下文切换时间,并以Windows2000(XP)下的实时扩展RTX为研究对象,剖析其内核的实时机制,使用高精度时钟板以及任务挂起/恢复的方法来测试RTX中断响应时间和上下文切换时间,为RTX在强实时领域的应用提供了依据。
The experiment results showed that due to exist the interrupt service time and interrupt response latency, the external interrupt response frequency of mcs-51 system is limited; the maximum measurable external interrupt response frequency is about 65 kHz.
实验结果表明 :由于中断服务时间和中断响应延迟的存在 ,MCS-5 1系统的外部中断响应频率是受到限制的 ;最高可测试的外部中断响应频率大约是 6 5 k Hz。
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