The 386 microcode sequencer has a one-cycle pipeline delay: when a jump or RNI (run next instruction) is decoded, the micro-instruction immediately after it has already been fetched and will execute before the jump takes effect. This "delay slot" is a basic property of the sequencer, and the microcode is written to fill it with useful work rather than waste a cycle on a bubble. The examples in the PTSAV section above show this: at 582/5AE, the micro-instruction after LCALL executes before the subroutine begins.
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Publication date: 28 February 2026
“省市县乡领导班子将陆续换届，强调政绩观也很有针对性。”在开局之年的“第一课”上，习近平总书记道出了树立和践行正确政绩观的另一层深远考量。