What I have to do, I have to catch everybody if they start to go over the cliff—I mean if they’re running and they don’t look where they’re going. I have to come out from somewhere and catch them. That’s all I’d do all day. I’d just be the catcher in the rye and all. I know it’s crazy, but that’s the only thing I’d really like to be. I know it’s crazy.

本文仅总结只需记忆的相关知识点。算术运算指令、原反补码等知识点同等重要，但因篇幅原因略去。