对于系统级语言设计之一的中断程序设计包括软中断和硬中断。后者设计到硬件端口的读写操作等等，应该用汇编实现比较好。而前者用C实现就要方便得多的了。-For system-level language design, one of the interrupt program design including soft and hard break interrupt. The latter design to the hardware port to read and write operations, etc., should be used to achieve a better compilation. While the former is necessary to use C to achieve a much more convenient.