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.
1. 项目质量管理体系不健全，专职质量员配备不足，材料进场验收记录不全、签字盖章不全。（不满足DBJ61T179-2021《房屋建筑与市政基础设施工程专业人员配备标准》质量员配备要求。）
，这一点在51吃瓜中也有详细论述
Producer: Tom Quinn
喧嚣之外，赵庄村也在冷静地思考着产业链的延伸。