Memory Map - IBM Aptiva Handbook

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 9: Memory map
Address range
0-640KB (0-9FFFFH)
640-768KB (A0000-BFFFFH)
768-800KB (C0000-C7FFFH)
800-896KB (C8000-DFFFFH)
896-960KB (E0000-EFFFF)
960-1024KB (F0000-FFFFFH)
1024KB-128MB (100000-7FFFFFFH)
192MB-193MB (C000000H-C0FFFFFH)
154 Appendix A: Specification tables
Description
Base memory
VGA mode video memory
Video BIOS
Adapter card memory or upper memory
System POST and Rapid Resume BIOS (available for
upper memory)
System BIOS (some may be available for upper memory)
Extended memory
Linear video memory