IBM Aptiva Series Handbook page 137

Memory map
This table shows the hexadecimal addresses for the system memory regions. You may use this information for adapter cards
that require you to set up memory regions.
Table 5: Memory map
Address range
0~512 KB (000000 ~ 07FFFF)
512~640 KB (080000 ~ 09FFFF)
640~768 KB (0A0000 ~ 0BFFFF)
768~800 KB (0C0000 ~ 0C7FFF)
800~896 KB (0C80000 ~ 0DFFFF)
896~960 KB (0E0000 ~ 0EFFFF)
960~1024 KB (0E0000 ~ 0EFFFF)
100000 KB ~ Upper Limit
Upper Limit ~ 4 GB
Description
Base memory
Host/PCI memory
PCI/ISA Video buffer memory
Video BIOS memory
ISA adapter BIOS and buffer memory
BIOS extension memory
Setup and POST memory
PCI development BIOS
System BIOS memory
Main memory
PCI memory
A-1