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.
Раскрыты подробности о договорных матчах в российском футболе18:01。WPS下载最新地址对此有专业解读
Последние новости，这一点在夫子中也有详细论述
Energy bills will fall by £117 for millions of households in Great Britain from April