英语词汇“High memory area”字怎么读，High memory area的拼音、意思释义、用法及组词造句例句翻译-英语翻译词典-学习充电-依恋情感网

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词汇	High memory area
分类	英语词汇英语翻译词典
释义	High memory area 英语百科 High memory area In Memory management, the high memory area (HMA) is the RAM area consisting of 65520 bytes beyond the upper memory area of an IBM AT or compatible computer. In real mode, the segmentation architecture of the Intel 80286 and subsequent processors identifies memory locations with 16-bit segment and 16-bit offset, which is resolved into a physical address via (segment) x 16 + (offset). Although intended to address only 1 Megabyte (MB) (2 bytes) of memory, segment:offset addresses at `FFFF:0010` and beyond reference memory beyond 1 MB (`FFFF0 + 0010 = 100000`). So this mode can actually address the first 65520 bytes of extended memory as part of the 64 KB range starting 16 bytes before the 1 MB mark—`FFFF:0000 (0xFFFF0)` to `FFFF:FFFF (0x10FFEF)`. The Intel 8086 and Intel 8088 processors, unable to handle more than 1 MB of memory because they had only 20 address lines, wrapped around at the 20th bit, so that address `FFFF:0010` was equivalent to `0000:0000`.
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