- "History is unambiguous on this point"
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.，更多细节参见新收录的资料
ВсеПолитикаОбществоПроисшествияКонфликтыПреступность，推荐阅读新收录的资料获取更多信息
2 days agoShareSave。关于这个话题，新收录的资料提供了深入分析