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。safew官方版本下载对此有专业解读
Every V86 segment gets the same treatment: access rights 0xE200 (Present, DPL=3, writable data segment), base = selector shifted left by 4, and limit = 64 KB. The microcode loops through all six segment register caches using a counter, applying the same fixed descriptor to each one. This is pure real-mode emulation, enforced at ring 3 with full paging protection underneath.。Line官方版本下载对此有专业解读
(e.g. custom) product. IBM probably regarded it as a prototype or pilot with