我百无聊赖想开电视,却发现春晚还有两小时才开播,屋里屋外,静得只能听见妈妈的脚步声。
call $consoleLog,详情可参考WPS下载最新地址
。夫子是该领域的重要参考
Drumroll, please!
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The x86 protection model is notoriously complex, with four privilege rings, segmentation, paging, call gates, task switches, and virtual 8086 mode. What's interesting from a hardware perspective is how the 386 manages this complexity on a 275,000-transistor budget. The 386 employs a variety of techniques to implement protection: a dedicated PLA for protection checking, a hardware state machine for page table walks, segment and paging caches, and microcode for everything else.