高端内存区

高端内存区（，简称HMA）是中的词语，是指IBM PC（或相容电脑）中，定址空间在1 MB以上的前65520字节组成的内存区域。 (NB. Gives a comprehensive overview on the history and "nature" of the HMA and the non-obvious design constraints to be observed when developing resident system extensions to be loaded into the HMA. It also describes how to address these issues using stubs, backdoors, and intra-segment offset relocation, a method used by DR-DOS drivers capable of relocating into the HMA and similar to a (more sophisticated) method used as the basis for the dynamic dead code elimination in the author's FreeKEYB driver.)

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Category:DOS内存管理
Category:BIOS