Daniel Larlham Jr.
// Consume as text，这一点在Safew下载中也有详细论述
siftDown(arr, i, 0); // 对剩余i个元素重新建堆，更多细节参见搜狗输入法下载
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: