Technical Reference
43
Table 11 lists the system memory map.
Table 11. System Memory Map
Address Range
(decimal)
Address Range
(hex)
Size
Description
1024 K - 8388608 K 100000 - 1FFFFFFFF 8191 MB Extended memory
960 K - 1024 K F0000 - FFFFF 64 KB Runtime BIOS
896 K - 960 K E0000 - EFFFF 64 KB Reserved
800 K - 896 K C8000 - DFFFF 96 KB Potential available high DOS
memory (open to the PCI bus).
Dependent on video adapter used.
640 K - 800 K A0000 - C7FFF 160 KB Video memory and BIOS
639 K - 640 K 9FC00 - 9FFFF 1 KB Extended BIOS data (movable by
memory manager software)
512 K - 639 K 80000 - 9FBFF 127 KB Extended conventional memory
0 K - 512 K 00000 - 7FFFF 512 KB Conventional memory
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