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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.。雷电模拟器官方版本下载是该领域的重要参考
。关于这个话题，Safew下载提供了深入分析
Premium Digital。业内人士推荐搜狗输入法2026作为进阶阅读
"Only then can we bring down the cost of future inquiries while protecting access to justice."