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Appendix B
Memory and I/O Maps
Memory Address Map
Address
0000000 to
009FFFF
00A0000 to
00BFFFF
00C0000 to
00E7FFF
00E8000 to
00FFFFF
0100000 to
7FFFFFF
60
Name
Function
640KB System
System Board Memory
Board RAM
128KB Video
Reserved for Graphics
Display Memory
Display Memory
160KB I/O
Reserved for ROM on
Expansion ROM
I/O Adapter Card
96KB ROM on
System Board BIOS
the System Board
Maxi m um
System Board Memory
Memory 128MB
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