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.
A reference implementation for this alternative approach is available now and can be found at https://github.com/jasnell/new-streams.。Line官方版本下载对此有专业解读
Cross-layer sharing, rank-1 projections, sparse gate, low-rank head, frozen scaling params。快连下载-Letsvpn下载对此有专业解读
Алексей Гусев (Редактор отдела «Спорт»)