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.
Трамп высказался о непростом решении по Ирану09:14
，推荐阅读搜狗输入法2026获取更多信息
Мощный удар Израиля по Ирану попал на видео09:41
Юлия Мискевич (Ночной линейный редактор)