Acer Travelmate 505 Service Guide

Chapter 125
Memory Address Map
Memory AddressSizeFunction
00000000-0009FFFF 640 KB  Base memory
000A0000-000BFFFF 128 KB Video memory
000C0000-000CBFFF 40 KB Video BIOS
000E0000-000FFFFF 128 KB System BIOS
00100000-top limited
04000000-04000FFF
04001000-04001FFF
80100000-801000FF
80500000-805FFFFF
80800000-80BFFFFF
81000000-81FFFFFF
82100000-82100FFF--
4 KB
4 KB
256 B
1 MB
3 MB
16 MB
4 MBExtended (DIMM) memory
PCMCIA controller (slot 1)
PCMCIA controller (slot 2)
Lucent Win Modem
NetMagic VGA
Neomagic...

26Chapter 1
IRQ Assignment Map
Interrupt ChannelFunction
NMI System errors
IRQ0 System timer
IRQ1 Keyboard
IRQ2 Cascade
IRQ3 COM2
IRQ4 COM1
IRQ5 VGA
IRQ6 Floppy
IRQ7 LPT1
IRQ8 Real time clock
IRQ9 PCMCIA (Optional)
IRQ10 USB
IRQ11 Audio/Modem/CardBus
IRQ12 PS2 pointing device
IRQ13 Numeric data processor
IRQ14 1st IDE device (hard disk)  
2nd EIDE device (CD-ROM drive)
IRQ15 Optional
DMA Channel Assignment
DMA ChannelFunction
DRQ0 Audio (optional)
DRQ1 ECP or Audio (optional)
DRQ2 Floppy
DRQ3 ECP...

Chapter 227
BIOS Setup Utility
The BIOS Setup Utility is a hardware configuration program built into your computer’s BIOS (Basic Input/
Ouput System).
Your computer is already configured and optimized properly, and you do not need to run this utility.  However, 
if you encounter configuration problems, you may need to run it.  
To activate the BIOS Setup Utility, press F2
 during POST while the TravelMate logo is being displayed.
Navigating the BIOS Setup Utility
There are six menu options: System...

28Chapter 1
System Information
The System Information screen displays a summary of your computer hardware information.
The table below describes the parameters in this screen.    
Serial Number
The Serial Number is the number identical to the system serial number labelled at the bottom of system unit.  
The default Serial Number is scanned while manufacturing and stored to the LCD inverter.
  While service 
engineers swapping invertors for customers, they should re-input the original Serial Number to the...

Chapter 129
Product Name
It is the default setting as the brand name + model name of Acer product;  such as TravelMate 505.   Product 
Name will be automatically created by using 505Util.zip
.
Manufacture Name
The default setting is Acer.   Manufacture Name will be automatically generated by using 505Util.zip
.
 
UUID
It stands for  Universally Unique IDentifiers, also known as GUID (Globally Unique IDentifier).   The 
requirement specification of SMBIOS 2.1
 (System Management BIOS).   UUID are...

30Chapter 1
Basic System Configuration
The Basic System Configuration screen contains parameters involving basic computer settings like date and 
time.
The table below describes the parameters in the screen.    
ParameterDescription
Date Sets the system date.
Format: DDD MMM DD YYYY (day-of-the-week month day year)
Time Sets the system time.
Format: HH:MM:SS (hour:minute:second)
505-1.book  Page 30  Thursday, November 4, 1999  4:36 PM 

Chapter 131
Startup Configuration
The Startup Configuration screen contains parameters that are related to computer startup. 
The table below describes the parameters in this screen.  Settings in boldface are the default and suggested 
parameter settings.
ParameterDescription
Boot Display Sets the display on boot-up.
When set to Auto, the computer automatically determines the display device.  If an 
external display device (e.g., monitor) is connected, it becomes the boot display; 
otherwise, the...

32Chapter 1
Onboard Device Configuration
The Onboard Device Configuration screen contains parameter settings for your hardware connection devices.   
CAUTION: 
The parameters in this screen are for advanced users only.  You do not need to change the values 
in this screen because these values are already optimized.
The table below describes the parameters in this screen.  Settings in boldface are the default and suggested 
parameter settings.
ParameterDescription
Serial Port Enables or disables the...

Chapter 133
System Security
The System 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: 
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: 
1.
Use the 
­ and ¯ keys to highlight a password...

34Chapter 1
4.Retype the password to verify your first entry and press Enter.
After setting the password, the computer automatically sets the chosen password parameter to Present.
5.Press Esc to return to the main menu.
6.Press Esc.  The following dialog box appears.
7.Select Ye s and press Enter to save the password and exit the BIOS Setup Utility.
Changing a password
To change a password, follow the same steps used to set a password. 
Removing a password
To remove a password, use the ­ and ¯ keys to...