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.
这正是长远政绩观的生动体现：“一张好的蓝图，只要是科学的、切合实际的、符合人民愿望的，就要像接力赛一样，一棒一棒接着干下去。”
。关于这个话题，爱思助手下载最新版本提供了深入分析
Minimax 推出 MaxClaw0
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