Segment not present fault
As an aside: the early 386's POPAD instruction has a famous bug. EAX is written in the RNI (run-next-instruction) delay slot via an indirect register file access -- the only instruction that does this. When the next instruction uses a base+index addressing mode, the register file write from POPAD collides with the EA calculation's register file read, corrupting the address. A fitting example of how complex optimizations can lead to problems.
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14:42, 27 февраля 2026Экономика
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Nature, Published online: 27 February 2026; doi:10.1038/d41586-026-00538-4
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