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A MEMORY & I/O MAPS
A.1 MEMORY MAPPING
Address
00000-9FFFF
A0000-BFFFF
C0000-CBFFF
CC000-DFFFF
E0000-FFFFF
100000-Top of DRAM
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1MB to top of DRAM
100000h
See detailed map
to the right
A0000h
0 - 640KB DRAM
Function
0-640 KB DRAM
Video DRAM
Video BIOS
Optional ROM (Free)
LAN BIOS around 30KB if activated, address may vary
SCSI BIOS 18KB at runtime, 2KB if no device, address may vary
System BIOS
1 MB - Top of DRAM
System BIOS
Optional ROM (Free)
LAN BIOS if activated (~30KB)
SCSI BIOS (18KB at runtime)
Optional ROM (Free)
Video BIOS
Video DRAM
Note 1 : LAN BIOS address may vary
Note 2 : SCSI BIOS address may vary.
Size is only 2KB if no device.
A-1
FFFFFh
E0000h
See Note 1
See Note 2
C 000h
C
C0000h
A0000h
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