![](/images/new-backgrounds/1205856/205856207x1.webp)
System memory map specifications
Size | Memory address | System function | |
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640 KB | Base memory | ||
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128 KB | Video memory | ||
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48 | KB | Video BIOS | |
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160 KB | Unused | ||
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64 | KB | System BIOS | |
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15 | MB | Extended memory | |
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58 | MB | Super extended memory | |
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58 | MB | Unused | |
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2 MB | Video memory (direct access) | ||
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4 GB | Unused | ||
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64 | KB | System BIOS | |
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