Originally posted by cdl at 2004-10-7 00:00:
关于bios映射到ram：bios映射到ram不是必须的，只是在rom中运行速度太慢。为了让执行速度更快而映射的，如果应用程序不是经常调用bios的话，没必要映...
不同意你的理解
bios的代码中只有刚开始的一部分不需要桟的.
如果继续下去,bios中的大部分功能实现是需要桟的支持,哪怕他是在实模式下.
所以你说ram不是必须的我不同意.
虽然windows有了他自己的驱动,但是它还是要由bios来引导,目前计算机的体系机构就是这样的,除非微软自己写一个东西来引导他自己的操作系统.
Originally posted by cdl at 2004-10-7 00:00:
Regarding BIOS mapping to RAM: BIOS mapping to RAM is not necessary; it's just that running in ROM is too slow. It's mapped for faster execution. If the application doesn't frequently call BIOS, there's no need to map...
Disagree with your understanding
Only the initial part of the BIOS code doesn't need stack.
If you continue, most of the BIOS function implementations require stack support, even though it's in real mode.
So I disagree that RAM is not necessary.
Although Windows has its own drivers, it still needs BIOS to boot. The current computer architecture is like this, unless Microsoft writes something to boot its own operating system.
