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Memory Address Map
Memory Address
00000000-0009FFFF
000A0000-000BFFFF
000C0000-000CBFFF
000E0000-000FFFFF
00100000-top limited
04000000-04000FFF
04001000-04001FFF
80100000-801000FF
80500000-805FFFFF
80800000-80BFFFFF
81000000-81FFFFFF
82100000-82100FFF
FFFF0000-FFFFFFFF
I/O Address Map
I/O Address
000-00F
020-021
040-043
060, 064
061
040B
061
070-071
080-08F
0A0-0A1
0C0-0DF
0F0-0FF
120-13F, 180-18F
170-177
1F0-1F7
220-22F
240-24F
278-27F
2E8-2EF
2F8-2FF
378, 37A
3BC-3BE
3B0-3BB, 3C0-3DF
3F0h-3F7
3E8-3EF
3F0-3F7
3F8-3FF
480-48F, 4D6
4D0-4D1, CF8-CFF
Chapter 1
Size
640 KB
128 KB
40 KB
128 KB
--
4 KB
4 KB
256 B
1 MB
3 MB
16 MB
4 MB
64 KB
DMA controller-1
Interrupt controller-1
Timer 1
Keyboard controller 8742 chip select
System speaker out
DMA controller-1
System speaker
Real-time clock and NMI mask
DMA page register
Interrupt controller-2
DMA controller-2
Numeric data processor
Power management controller
2nd EIDE device (CD-ROM) select
1st EIDE device (hard drive) select
Audio
Audio(optional)
Parallel port 3
LT Win modem or COM4 (optional)
COM2 or LT Win modem(optional)
Parallel port 2
Parallel port 1
Video Controller
Standard Floppy Disk Controller
COM3 or LT Win modem (optional)
Floppy disk controller
COM1 or LT Win modem (optional)
DMA controller-1
PCI configuration register
Function
Base memory
Video memory
Video BIOS
System BIOS
Extended (DIMM) memory
PCMCIA controller (slot 1)
PCMCIA controller (slot 2)
Lucent Win Modem
NetMagic VGA
Neomagic VGA
System board extension for PnP BIOS
Function
25
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