Acer Aspire 1400 Service Manual page 41

Mechanical Specification
Item
Switch
Memory Address Map
Memory Address
00100000h-000F0000h
000CD000h-000C0000h
000C0000h-000A0000h
000A0000h-00000000h
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
170-177
1F0-1F7
220-22F
240-24F
278-27F
378,37A
3B0-3BB
3C0-3DF
3F0h-3F7
3F0-3F7
480-48F, 4D6
4D0-4D1
CF8-CFF
IRQ Assignment Map
Interrupt Channel
IRQ00
IRQ01
IRQ02
IRQ03
IRQ04
Chapter 1
Power, Lid, Application/Button Lock/CD-Play, Eject/Stop Button, Play/Pause
Button, Reverse Button, Forward Button, Volume Down Button, volume up
button
Size
64KB
128 KB
640KB
DMA controller-1
Interrupt controller-1
Timer 1
Keyboard controller 38859 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
2nd EIDE device (CD-ROM) select
1st EIDE device (hard drive) select
Audio
Audio (optional)
Parallel port 3
Paraller port 1
Video Controller
Standard Floppy Disk Controller
Floppy disk controller
DMA controller-1
PCI configuration register
System timer
Keyboard
Programmable Interrup Controller
Free
Infrared Communications Controller
Specification
Function
System BIOS
VGA BIOS
Video memory (VRAM)
Conventional memory
Function
Function(Hardware)
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