Technical Reference 
 41 
Table 10 lists the system memory map. 
Table 10.  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