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.
Musk's SpaceX is the world's leading company for rocket launches including for sending humans into space and maintaining a network of 10,000 Starlink internet satellites.，这一点在safew官方下载中也有详细论述
Reporting from, 台中。关于这个话题，safew官方版本下载提供了深入分析
Earlier today I set you this logic puzzle. Here is is again with the solution.