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4.7 901. 股票价格跨度
，这一点在safew官方下载中也有详细论述
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.。关于这个话题，safew官方版本下载提供了深入分析
Step 2: Route on the Abstract Graph (The "Highway" Part):。关于这个话题，搜狗输入法2026提供了深入分析
(and seem to get mixed up with its use of LUCIFER/DSD-1/DES for communications).