在BIOS中发出哔声 [英] Make beep sound in BIOS

问题描述

计算机启动时，它会从BIOS扬声器中发出蜂鸣声 .

When computer starts to boot, It makes a beep sound from the BIOS Speaker.

如何在Assembly或C ++中做到这一点? 显然，我想通过BIOS Speaker发出蜂鸣声.
记住我的意思是BIOS扬声器

How do i can do this in Assembly or C++ ? Clearly I want to make Beep Sound by BIOS Speaker.
Remember i mean BIOS Speakers

它为此有中断吗?我搜索了一下，但没有找到.. 我使用了一些中断，但是没有这样做.以下代码:

Does it have any interrupt for that ? I searched about that but nothing found.. I used some interrupt But the didn't do this. the following code :

int main(){
   cout<<"\a";
}

从扬声器而不是Bios产生声音

Produced the sound from the Speaker, Not Bios

我该怎么做?有任何中断吗?

How can i do this ? with any interrupt ?

推荐答案

我想，在任何现代Windows操作系统中实现此功能的唯一方法是编写内核模式驱动程序.原因是in或out指令在用户模式下不可用，并且没有用于蜂鸣器的API.

The only way you can implement this in any modern Windows OS is, I guess, writing Kernel Mode driver. The reason is that in or out instructions are not available in user mode, and there is no API for beeper available.

• http://en.wikipedia.org/wiki/Protection_ring
• https://msdn .microsoft.com/en-us/library/windows/hardware/ff554836(v = vs.85).aspx

• http://en.wikipedia.org/wiki/Protection_ring
• https://msdn.microsoft.com/en-us/library/windows/hardware/ff554836(v=vs.85).aspx

但是，如果您只想研究底层编程，请考虑编写自己的引导程序甚至BIOS(使用虚拟机).

However, if you're just willing to dig into low-level programming, consider writing own bootloader or even own BIOS (using virtual machine).

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