Dell Precision PD055 Quick Reference Manual page 130

1-1-2
1-1-3
1-1-4
1-2-1
1-2-2
1-2-3
1-3
1-3-1 2-4-4
1-3-2
3-1-1
3-1-2
3-1-3
3-1-4
3-2-2
3-2-4
3-3-1
3-3-2
3-3-4
3-4-1
3-4-2
3-4-3
4-2-1
4-2-2
4-2-3
4-2-4
4-3-1
4-3-3
4-3-4
4-4-1
4-4-2
4-4-3
4-4-4
130
NVRAM
ROM BIOS
DMA
DMA
Video Memory
/
DMA
DMA
Keyboard Controller
NVRAM
NVRAM
Video Memory
ROM
A20
0FFFFh
/
2