"I wouldn't want to take away the everyman, working-class accessibility of the brand," he says.
The TLB lookup is combinational -- it evaluates in the same half-cycle as the limit check, requiring no additional clock. The common case (TLB hit, no page boundary crossing) adds zero overhead to a memory access. This is why the Segment Descriptor Cache and Page Cache (TLB) together occupy such substantial die area -- they are the fast path that makes protected mode competitive with real mode.
，更多细节参见heLLoword翻译官方下载
funding for the public good.
// 易错点1：条件写反（比如写成cur）→ 栈逻辑完全错误，无法找到上一个更大值