Motherboard Resources; Memory Map - Intel PD440FX Product Manual

5
Technical Reference

Motherboard Resources

Memory Map

Table 19.

Memory Map

Address
Range Address
(Decimal) Range (hex)
1024K- 100000-
262144K 10000000
960K-1024K F0000-FFFFF
944K-960K EC000-EFFFF 16K
936K-944K EA000-EBFFF 8K
932K-936K E9000-E9FFF
928K-932K E8000-E8FFF
896K-928K E0000-E7FFF
800K-896K C8000-DFFFF 96K
72
Size Description
255M Extended memory
64K System BIOS
Boot Block
ESCD (Plug and
Play configuration
area)
4K Reserved for BIOS
4K OEM logo area
32K BIOS reserved
Available high DOS
memory (open to
ISA and PCI bus)
continued
Table 19. Memory Map (continued)
Address
Range Address
(Decimal) Range (hex)
640K-800K A0000-C7FFF
639K-640K 9FC00-9FFFF
512K-639K 80000-9FBFF
0K-512K 00000-7FFFF
Size Description
160K Video memory and
BIOS
1K Extended BIOS
Data (moveable by
memory
management
software)
127K Extended
conventional
memory
512K Conventional
memory