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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.
,这一点在PDF资料中也有详细论述
While Honor has already made plenty of product announcements, with tablets, foldables and more, its most interesting device at MWC 2026 is the Robot Phone — and maybe the humanoid robot that came alongside it.
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