how to debug any system program by softice(100 fen)

and how to debug int service (such as int 2e segment written by microsoft)by softice?

if you familier with assemble,there is no difficult to debug those procedure,just set the breakpoint at the place that you want to break, and step into it.

[编辑 -  4/1/04 by  wowocock]

 如果我知道怎么下breakpoint，那就好办了。

问题是比如一些系统例程，只能由系统启动或者从中断进入，
你怎么去下它的breakpoint呢？

很简单找到中断门的地址，直接下断点即可．

怎么找哇？困惑

算了，把分给了。我这几天在公司上不了网。各位有回答的。
寄信给我。谢了。