高端內存區

高端內存區（英語：high memory area，簡稱HMA）是DOS記憶體管理（英語：DOS memory management）中的詞語，是指IBM PC（或相容電腦）中，定址空間在1 MB以上的前65520位元組組成的內存區域。^[1]

參考資料

^ Paul, Matthias R. Treiber dynamisch nachladen (Intra-Segment-Offset-Relokation zum Laden von TSRs in die HMA) [Loading drivers dynamically (Intra-segment offset relocation to load TSRs into the HMA)]. Newsgroup: de.comp.os.msdos. 2002-02-02 [2017-07-02]. （原始內容存檔於2017-09-09）（德語）. (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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