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