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.
越是伟大的事业，越要坚持实事求是。
To: Sundar Pichai, Chief Executive Officer, Google，更多细节参见safew官方版本下载
从这个意义上看，转型并不是一次简单的商业模式切换，而是一场关于平台角色的重塑。，推荐阅读雷电模拟器官方版本下载获取更多信息
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Цены на нефть взлетели до максимума за полгода17:55