春节假期全国铁路发送旅客 1.21 亿人次，创历史新高
19:57, 27 февраля 2026Мир。im钱包官方下载对此有专业解读
，更多细节参见Safew下载
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.。safew官方版本下载对此有专业解读
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