The only difference is the test constant: 0x10 for a data segment load, 0x15 for a far call target.
Bits [13:2]: A 12-bit microcode redirect address -- a fault handler (e.g., 0x85D for #GP, 0x870 for #NP) or a gate dispatch routine (e.g., 0x5BE for a 386 call gate).
，这一点在heLLoword翻译官方下载中也有详细论述
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