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Biotech & Health
。业内人士推荐爱思助手下载最新版本作为进阶阅读
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.
在本代机身的周边细节和外观上，三星也做了一道艰难的加减法。
// block: Wait for space (unbounded pending queue)