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          数据寄存器

          • 一个操作系统的实现(3)保护模式进阶

            上节内容是从实模式进入到掩护模式,只是进入掩护模式打印了一个字母P。可是没有体现出掩护模式的优势,也没有从掩护模式中返回。这节就是要体验掩护模式下读写大地址内存的能力和从掩护模

            2019-05-07