Specifications 6–7
System DMA specifications
System memory map specifications
Hardware DMA System function
DMA0 Not applicable
DMA1* Not applicable
DMA2* Not applicable
DMA3 Not applicable
DMA4 Direct memory access controller
DMA5* Not applicable
DMA6 Not assigned
DMA7 Not assigned
*PC Card controller can use DMA 1, 2, or 5.
Size Memory address System function
640 KB 00000000-0009FFFF Base memory
128 KB 000A0000-000BFFFF Video memory
64 KB 000C0000-000CFFFF Video BIOS
64 KB 000E8000-000FFFFF System BIOS
00100000- XFFFFFFF Extended memory (based on memory installed)
(X+1)0000000-FEDFFFFF PCI bus
FED00000-FED003FF High precision event timer
FEE01000-FFFFFFFF PCI bus
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