System DMA specifications
| Hardware | DMA System function |
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| DMA0 | Not applicable |
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| DMA1* | Not applicable |
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| DMA2* | Not applicable |
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| DMA3 | Not applicable |
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| DMA4 | Direct memory access controller |
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| DMA5* | Not applicable |
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| DMA6 | Not assigned |
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| DMA7 | Not assigned |
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| *PC Card controller can use DMA 1, 2, or 5. |
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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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64 KB | Video BIOS | |
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64 KB | System BIOS | |
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| 00100000- XFFFFFFF | Extended memory (based on memory installed) |
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| PCI bus | |
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| High precision event timer | |
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| PCI bus | |
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Specifications |
