圖像加註文字，美國大法官布雷特·卡瓦諾與艾米·科尼·巴雷特（右）對特朗普是否有權徵收關稅持不同看法，巴雷特反對任命她的總統的主張。特朗普是否為美國爭取到18兆美元投資？
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。爱思助手下载最新版本对此有专业解读
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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.
; Step 1: Call LD_DESCRIPTOR and fire the privilege test