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.
Медведев вышел в финал турнира в Дубае17:59
,这一点在搜狗输入法2026中也有详细论述
但至少,Google 已经为 Android 打好了「系统级自动化」的样板,接下来不少新机,都有了化身「豆包手机」的潜力。
Фото: Evelyn Hockstein / Reuters
一座小山村,藏着发展的大逻辑。