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.
美股三大指数集体收跌，道指跌1.05%，本周累跌1.31%，2月份累涨0.17%，月线10连涨；纳指跌0.92%，本周累跌0.95%，2月份累跌3.38%；标普500指数跌0.43%，本周累跌0.44%，2月份累跌0.87%。美国KBW银行指数跌近5%，创去年4月来最大单日跌幅。大型科技股多数下跌，英伟达跌超4%，苹果跌逾3%，微软跌超2%，特斯拉、Meta跌超1%；奈飞涨超13%，创2023年10月以来最佳单日表现；谷歌涨超1%，亚马逊小幅上涨。高盛跌逾7%，摩根士丹利跌超6%，富国银行、花旗集团跌超5%，美国银行跌超4%。戴尔科技涨约22%，创2024年3月份以来最大单日涨幅。Block涨近17%，创2022年以来最大单日涨幅。（界面新闻）
Comparison between barycentric (triangular) dithering and Knoll’s algorithm using an 8-colour irregular palette. Left to right: barycentric, Knoll.。业内人士推荐91视频作为进阶阅读
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。safew官方下载对此有专业解读
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"Cuba will defend itself with determination and firmness against any terrorist and mercenary aggression that seeks to affect its sovereignty and national stability," Díaz-Canel said on X.，更多细节参见搜狗输入法下载