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.
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。关于这个话题，爱思助手下载最新版本提供了深入分析
一天前的相同时间点，他的妻子、前国务卿希拉里开始接受质询，持续7小时。希拉里表示，她对爱泼斯坦的犯罪活动一无所知，也从未想起见过他。两次均为闭门听证，全程录像，作证记录据称将被公开。
* @return {number} 到达目的地的车队数量