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文中指出在ＤＯＳ支持下，周高级语言（Ｐａｓｃｄ或ｃ）编写控制应用程序时，欲使Ｗａｔｃｈｄｏｇ工作可靠，必须对ＤＯＳ中断向量表和系统数据区进行保护和恢复，必须对高级语言的系统变量也进行保护和恢复。
The article pointed out that DOS support, the week of high-level language (Pascd or c) to write control applications, to make Watchdog work reliably, DOS interrupt vector table and system data area protection and recovery must be high-level language system variables For protection and recovery.