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.
Iranian drones hit US embassy in Riyadh as Israel bombs Tehran and sends troops into southern Lebanon
，推荐阅读体育直播获取更多信息
This article originally appeared on Engadget at https://www.engadget.com/gaming/skateboarding-train-game-denshattack-is-out-on-june-17-210314631.html?src=rss
Последние новости
Know your rights.