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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，推荐阅读WPS官方版本下载获取更多信息
Москвичи пожаловались на зловонную квартиру-свалку с телами животных и тараканами18:04
in use, although as a practical matter MICR has given way to the more familiar，推荐阅读safew官方版本下载获取更多信息
「汽油……大多數州現在每加侖低於2.3美元，某些地方是每加侖1.99美元」
На Западе подчинили рой насекомых для разведки в интересах НАТО08:43。同城约会对此有专业解读