什么是INT 21h? [英] What is INT 21h?

问题描述

受到这个问题的启发

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我想知道INT 21h是一个概念.现在，我对内部结构有一些非常生锈的知识，但是没有那么多细节.我记得在C64中您有常规的中断和不可屏蔽的中断，但是我的知识到此为止.你能给我一些线索吗?这是与DOS相关的策略吗?

I wondered about the INT 21h as a concept. Now, I have some very rusty knowledge of the internals, but not so many details. I remember that in C64 you had regular Interrupts and Non Maskable Interrupts, but my knowledge stops here. Could you please give me some clue ? Is it a DOS related strategy ?

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来自

From here: A multipurpose DOS interrupt used for various functions including reading the keyboard and writing to the console and printer. It was also used to read and write disks using the earlier File Control Block (FCB) method.

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