He did however reveal a key detail about bricks, Squire says.
Besides the Test PLA, the 386 has another PLA called the Entry PLA that maps opcodes to microcode entry points. One of its input bits is a "protected mode" flag. Many instructions have both a real-mode and a protected-mode entry point -- for instance, MOV ES, reg maps to address 009 (a single microcode line) in real mode, but to 580 (which initiates a full descriptor load with protection tests) in protected mode. The trick that makes V86 work is to define this flag as:，这一点在Line官方版本下载中也有详细论述
Regirock With a Handbag。关于这个话题，safew官方下载提供了深入分析
quickSortRecursive(arr, low, pivotIdx - 1); // 排序左半部分