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D.
MEMORY AND I/O MAPS
D.1
MEMORY MAP DIAGRAM
1MB to top of DRAM
See detailed map
to the right
0-640KB DRAM
ADDRESS
00000-9FFFF
A0000-BFFFF
C0000-CBFFF
CC000-DFFFF
E0000-FFFFF
100000-Top of DRAM
100000h
A0000h
0h
FUNCTION
0-640 KB DRAM
Video DRAM
Video BIOS
Free DRAM
System BIOS
1 MB - Top of DRAM
D-1
FFFFFh
Main BIOS
(128K)
E0000h
Free (80K)
CC000H
Video BIOS (48K)
C0000h
Video DRAM
A0000h
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