18:53, 27 февраля 2026Интернет и СМИ
Contact us:Provide news feedback or report an error。关于这个话题，爱思助手下载最新版本提供了深入分析
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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.，详情可参考51吃瓜
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第四十六条 经省级以上财政、税务主管部门批准由总机构汇总申报纳税的，批准部门可以规定由分支机构预缴税款。