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.
In her survey, 22% of mothers and 20% of childless women picked such small gestures as one of the top two things that made them feel valued – more than big nights out or expensive presents.
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“工艺皮”贴上陈皮标签以假乱真
22:26, 27 февраля 2026Мир