Acer Travelmate 250 Service Guide

							32TravelMate 240/ 250
NOTE: IRQ settings may be changed by OS
00001000-0000107F Motherboard resources
00001180-000011BF Motherboard resources
00001800-00001807 Intel (R) 82850/82855 GM/GME Graphics Controller
00001810-0000181F Intel (R) 82801DB/DBM Ultra ATA Storage Controller-24CA
00001820-0000183F Intel (R) 82801DB/DBM USB Universal Host Controller-24C2
00001840-0000185F Intel (R) 82801DB/DBM USB Universal Host Controller-24C4
00001860-0000187F Intel (R) 82801DB/DBM USB Universal Host Controller-24C7
00001880-0000189F Intel (R) 82801DB/DBM SMBus Controller-24C3
000018C0-000018FF Crystal WDM AC’97 Driver for ICH4
00001C00-00001CFF Crystal WDM AC’97 Driver for ICH4
00002000-0000207F Agere Systems AC’97 Modem
00002400-000024FF Agere Systems AC’97 Modem
00003000-000030FF Realtek RTL8139/810x Family Fast Ethernet NIC
0000FC00-0000FCFF Texas Instruments PCI-1520 CardBus Controller
0000FD00-0000FDFF Texas Instruments PCI-1520 CardBus Controller
0000FE00-0000FEFF Texas Instruments PCI-1520 CardBus Controller
0000FF00-0000FFFF Texas Instruments PCI-1520 CardBus Controller
IRQ Assignment Map
Interrupt ChannelFunction
(ISA) 0 System timer
(ISA) 1 Keyboard
(ISA) 6 Keyboard
(ISA) 8 Standard floppy disk controller
(ISA) 9 System CMOS/real time clock
(ISA) 12 Synaptics PS/2 Port Pointing Device
(ISA) 13 Numeric data processor
(ISA) 14 Primary IDE Channel
(ISA) 15 Secondary IDE Channel
(PCI) 10 Agere Systems AC’97 Modem
(PCI) 10 Crystal WDM AC’97 Driver for ICH4
(PCI) 10 Intel (R) 82801DB/DBM SMBus Controller-24C3
(PCI) 10 Intel (R) 82801DB/DBM USB 2.0 Enhanced Host Controller-24CD
(PCI) 10 Texas Instruments PCI-1520 CardBus Controller
(PCI) 10 Texas Instruments PCI-1520 CardBus Controller
(PCI) 11 Intel (R) 82801DB/DBM USB Universal Host Controller-24C2
(PCI) 11 Intel (R) 82801DB/DBM USB Universal Host Controller-24C4
(PCI) 11 Intel (R) 82801DB/DBM USB Universal Host Controller-24C7
(PCI) 11 Intel (R) 82852/82855 GM/GME Graphics Controller
(PCI) 11 Realtek RTL8139/810x Family Fast Ethernet NIC
I/O Address Map
I/O AddressFunction 
						

							Chapter 133
DMA Channel Assignment
DMA ChannelFunction
2 Standard floppy disk controller
3 ECP Printer Port (LPT1)
4 Direct memory access controller 
						

							Chapter 234
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 bottom of screen).
Press m to enter setup. Press  during POST to enter multi-boot menu. In this menu, user can change 
boot device without entering BIOS SETUP Utility.
System Utilities
Chapter  2 
						

							35Chapter 2
Navigating the BIOS Utility
There are six menu options: Info., Main, System Devices, Security, Boot, and Exit.
Follow these instructions:
TTo choose a menu, use the cursor left/right keys (zx).
TTo choose a parameter, use the cursor up/down keys ( wy).
TTo change the value of a parameter, press por q.
TA plus sign (+) indicates the item has sub-items. Press e to expand this item.
TPress ^ while you are in any of the menu options to go to the Exit menu.
TIn any menu, you can load default settings by pressing t. You can also press u to save any 
changes made and exit the BIOS Setup Utility.
NOTE: You can change the value of a parameter if it is enclosed in square brackets. Navigation keys for a 
particular menu are shown on the bottom of the screen. Help for parameters are found in the Item 
Specific Help part of the screen. Read this carefully when making changes to parameter values.
This menu provides you the information of the system. 
						

							Chapter 236
Information
ParameterDescription
Floppy Disk Drive Shows floppy drive type informaiton.
Serial Number This field displays the serial number of this unit.
UUID Number UUID=32bytes 
						

							37Chapter 2
Main
The Main screen displays a summary of your computer hardware information, and also includes basic setup 
parameters. It allows the user to specify standard IBM PC AT system parameters.
NOTE: The screen above is for reference only. Actual values may differ. 
						

							Chapter 238
The table below describes the parameters in this screen. Settings in boldface are the default and suggested 
parameter settings.
NOTE: The sub-items under each device will not be shown if the device control is set to disable or auto. This is 
because the user is not allowed to control the settings in these cases.
ParameterDescriptionFormat/Option
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 (month/day/
year)
System Date
System Memory This field reports the memory size of the system. 
Memory size is fixed to 640MB
Extended Memory This field reports the memory size of the 
extended memory in the system. 
Extended Memory size=Total memory size-1MB
Video Memory Shows the VGA memory size. 
Fast Boot Determines if Customer Logo will be displayed or 
not; shows Summary Screen is disabled or 
enabled. 
Enabled: Customer Logo is displayed, and 
Summary Screen is disabled.
Disabled: Customer Logo is not displayed, and 
Summary Screen is enabled. Option: 
Enabled or Disabled
Power on display Auto: During power process, the system will 
detect if any display device is connected on 
external video port. If any external display device 
is connected, the power on display will be in CRT 
(or projector) only mode. Otherwise it will be in 
LCD only mode.
Both: Simultaneously enable both the integrated 
LCD screen and the system’s external video port 
(for an external CRT or projector).Option: 
Auto or Both
LCD Auto Dim Determines if the system will automatically dim 
the LCD brightness in order to save power when 
AC is not present.Option: 
Enabled or Disabled
PXE Boot from LAN Enables, disables the system boot from LAN 
(remote server). PXE is the protocal.Option: 
Enabled or Disabled
F12 Boot Menu Enables, disables Boot Menu during POST.
Option: 
Disabled or Enabled 
						

							39Chapter 2
Advanced
The Advanced menu screen contains parameters involving your hardware devices. It also provides advanced 
settings of the system.
The table below describes the parameters in the screen. Settings in boldface are the default and suggested 
parameter settings.
ParameterDescriptionOptions
Infrared Port Enables, disables or auto detects the infrared port.
Disabled/Disabled/Auto
Parallel Port Enables, disables or auto detects the parallel port.
Enabled/Disabled/Auto
Mode Sets the operation mode of the parallel port.
ECP, EPP, Normal or Bi-directional
Base I/O address Sets the I/O address of the parallel port.
378h/278h/3BCH
Interrupt Sets the interrupt request of the parallel port.
IRQ7/IRQ5
DMA channel Sets a DMA channel for the printer to operate in 
ECP mode. This parameter is enabled only if Mode 
is set to ECP.
DMA3/DMA1
Legacy USB Support Enables, disables USB interface devices support 
under DOS mode.Option: 
Disabled or Enabled 
						

							Chapter 240
Security
The Security screen contains parameters that help safeguard and protect your computer from unauthorized 
use. 
						

							41Chapter 2
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
Follow these steps as you set the user or the supervisor password:
1.Use the w andy keys to highlight the Set Supervisor Password parameter and press the e key. The 
Set Supervisor Password box appears:
2.Type a password in the “Enter New Password” field. The password length can not exceeds 8 
alphanumeric characters (A-Z, a-z, 0-9, not case sensitive). Retype the password in the “Confirm New 
Password” field.
IMPORTANT:Be very careful when typing your password because the characters do not appear on the screen.
3.Press e.
                After setting the password, the computer sets the User Password parameter to “Set”.
4.If desired, you can opt to enable the Password on boot parameter.
5.When you are done, press u to save the changes and exit the BIOS Setup Utility.
ParameterDescriptionOption
User Password is Shows the setting of the user password.
Clear or Set
Supervisor Password is Shows the setting of the Supervisor password
Clear or Set
Set User Password Press Enter to set the user password. When 
set, this password protects the BIOS Setup 
Utility from unauthorized access.
Set Supervisor Password Press Enter to set the supervisor password. 
When set, this password protects the BIOS 
Setup Utility from unauthorized access. 
Primary Harddisk Security This feature is available to user when 
Supervisor password is set. Password can be 
written on HDD only when Supervisor 
password or user password is set and 
password on HDD is set to enabled. 
Supervisor Password is written to HDD only 
when Supervisor password is being set. User 
password is written to HDD when both 
passwords are set. When both Supervisor and 
user password are present, both passwords 
can unlock the HDD.
Disabled or Enabled
Password on Boot Defines whether a password is required or not 
while the events defined in this group 
happened. The following sub-options are all 
requires the Supervisor password for changes 
and should be grayed out if the user password 
was used to enter setup.
Disabled or Enabled