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Acer Aspire 1400 Service Guide

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Page 41

Chapter 135
 
Switch Power, Lid, Application/Button Lock/CD-Play, Eject/Stop Button, Play/Pause 
Button, Reverse Button, Forward Button, Volume Down Button, volume up 
button
Memory Address Map
Memory AddressSizeFunction
00100000h-000F0000h 64KB System BIOS
000CD000h-000C0000h VGA BIOS
000C0000h-000A0000h 128 KB Video memory (VRAM)
000A0000h-00000000h 640KB Conventional memory
I/O Address Map
I/O AddressFunction
000-00F DMA controller-1
020-021 Interrupt controller-1
040-043 Timer 1
060, 064 Keyboard...

Page 42

36Chapter 1
IRQ05 CardBus Controller
IRQ06 Standard Floppy Disk Controller
IRQ07 Printer Port (LPT1) 
IRQ08 Real Time Clock
IRQ09 SCI IRQ used by ACPI bus
IRQ10 Free
IRQ11 Audio Controller, SMBus Controller, Carbus Controller, Intel Network 
Connection and Modem
IRQ12 PS/2 Mouse
IRQ13 Numeric data processor
IRQ14 Ultra ATA storage Controller
Primary IDE controller
IRQ15 Ultra ATA storage Controller
Secondary IDE channel (CD-ROM drive)
DMA Channel Assignment
DMA ChannelFunction(Hardware)
00 Free
01 SMC...

Page 43

Chapter 237
BIOS Setup Utility
The BIOS Setup Utility is a hardware configuration program built into your computer’s BIOS (Basic Input/
Output System).
Your computer is already properly configured and optimized, and you do not need to run this utility. However, 
if you encounter configuration problems, you may need to run Setup.  Please also refer to Chapter 4 
Troubleshooting when problem arises.
To activate the BIOS Utility, press 
m during POST (when “Press  to enter Setup” message is prompted 
on the...

Page 44

38Chapter 2
Main
The Main screen displays a summary of your computer hardware information, and also includes basic setup 
parameters.
NOTE: The screen above is for reference only. Actual values may differ.
The table below describes the parameters in this screen. Settings in boldface are the default and suggested 
parameter settings..
ParameterDescriptionFormat/Options
System Time Sets the system time. Format: HH:MM:SS 
(hour:minute:second)System 
Time. 
System Date Sets the system date. Format MM/DD/YYYY...

Page 45

Chapter 239
The items in this screen are important and vital information about your computer.  If you experience computer 
problems and need to contact technical support, this data helps our service personnel know more about your 
computer. Extended Memory Reports the memory size of the extended 
memory with an integer in the system and 
32 Bit SMI will occupy 0.5MB.
Note: Extended memory size= Total 
memory size-1MB-0.5M.
BIOS Ver.Product Name Shows the system BIOS version....

Page 46

40Chapter 2
Advanced
The Advanced screen contains parameters involving your hardware devices.
The table below describes the parameters in the screen Settings in boldface are the default and suggested 
parameter settings.                                    
ParameterDescriptionOptions
IDE Controller Configures the integrated local bus IDE 
adapter.Both: Enables CD-ROM and 
Hard Drive.
Primary: Enables Hard Drive 
only
Disabled: Disables the 
integrated local bus IDE 
adapter using options. 
Note:...

Page 47

Chapter 241
Parallel Port Enables or disables the parallel port.Enabled or Disabled
Note: Depending on your 
operating system, disabling an 
unused device may help free 
system resources for other 
devices.
Mode Sets the operation mode of the parallel port.ECP, EPP, Bi-directional or 
Normal
Base I/O address Sets the I/O address for the parallel port.378/278/3BC
Note: When Mode is selected 
as EPP mode,“3BC” will not be 
available.
Interrupt Set the interrupt for the parallel port.IRQ7or IRQ5
DMA channel...

Page 48

42Chapter 2
Security
The Security screen contains parameters that help safeguard and protect your computer from unauthorized 
use.
The table below describes the parameters in this screen. Settings in boldface are the default and suggested 
parameter settings.
NOTE: When you are prompted to enter a password, you have three tries before the system halts. Don’t forget 
your password. If you forget your password, you may have to return your notebook computer to your 
dealer to reset it.
Setting a Password...

Page 49

Chapter 243
1.Use the w andy keys to highlight the Set User Password/Set Supervisor Password parameter and press 
the e key. The Set User Password/Set Supervisor Password box appears:
2.Type a password in the Enter new password field. The password may consist of up to eight alphanumeric 
characters (A-Z, a-z, 0-9). Retype the password in the Confirm new password field.
3.If there is an old password then setup will prompt with the following window instead and a current 
password will be required to be...

Page 50

44Chapter 2
Removing a Password
Follow these steps:
1.Use the w and y keys to highlight the Set User Password parameter and press the e key. The Set 
Password box appears:
2.Type the current password in the Enter Current Password field and press e.
3.Press e twice without typing anything in the Enter New Password and Confirm New Password fields. 
The computer then sets the User Password parameter to “Clear”.
4.When you have changed the settings, press u to save the changes and exit the BIOS Setup...
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