Appendix 143
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 14: Memory map
Address range Description
0-640KB (0-9FFFFH) Base memory
640-768KB (A0000-BFFFFH) VGA mode video memory
768-800KB (C0000-C7FFFH) Video BIOS
800-896KB (C8000-DFFFFH) Adapter card memory or upper memory
896-960KB (E0000-EFFFF) Available for upper memory
960-1024KB (F0000-FFFFFH) System BIOS (some may be available for
upper memory)
1024KB-128MB (100000-7FFFFFFH) Extended memory
1GB (40000000H) Linear video memory
bi2gntce.bk : bi2gappa.doc Page 143 Saturday, June 3, 1995 6:54 AM