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Real-mode programs freely execute CLI and STI to control interrupts, PUSHF and POPF to manipulate flags, INT n for DOS and BIOS calls, and IN/OUT for hardware I/O. In normal protected mode, these instructions are privilege-checked -- they execute normally if the caller has sufficient privilege, and fault otherwise. The 386 can't simply let V86 tasks execute them freely -- a DOS program disabling interrupts would bring down the whole system -- but trapping on every INT 21h call would make V86 impractically slow.，推荐阅读快连下载-Letsvpn下载获取更多信息
。同城约会对此有专业解读
found more and more applications in the following years.
[&:first-child]:overflow-hidden [&:first-child]:max-h-full"。夫子是该领域的重要参考