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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.
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«Задержан гражданин, который при доставлении в судебное заседание для избрания меры пресечения в Таганском районе города Москвы сумел скрыться», — уточняется в сообщении ведомства.
I’m not content with only 2-3x speedups: nowadays in order for this agentic code to be meaningful and not just another repo on GitHub, it has to be the fastest implementation possible. In a moment of sarcastic curiosity, I tried to see if Codex and Opus had different approaches to optimizing Rust code by chaining them: