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6–16 Maintenance and Service Guide
Specifications
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Table 6-13
System Memory Map
Size Memory Address System Function
640 K 00000000 - 0009FFFF Base memory
128 K 000A0000 - 000BFFFF Video memory
48 K 000C0000 - 000CBFFF Video BIOS
160 K 000C8000 - 000E7FFF Unused
64 K 000E8000 - 000FFFFF System BIOS
15 M 00100000 - 00FFFFFF Extended memory
58 M 01000000 - 047FFFFF Super extended memory
58 M 04800000 - 07FFFFFF Unused
2 M 08000000 - 080FFFFF Video memory (direct access)
4 G 08200000 - FFFEFFFF Unused
64 K FFFF0000 - FFFFFFFF System BIOS