It was the most elite group of flying men ever assembled. They included Neil Armstrong, John Young and, fulfilling his childhood dream, Jim Lovell.
How does V86 work at the hardware level? When the VM bit (bit 17) of EFLAGS is set, the processor enters a hybrid state: it is still in protected mode with paging and privilege rings active, but most instructions execute as if the processor were in real mode. Segment addresses are computed as selector。业内人士推荐91视频作为进阶阅读
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