HP P Class 450/500/550/600/650/700/750 ATI Fire GL 4 graphics card users guide - Page 50

Reference, Checking for address and interrupt conflicts, I/O Address, Memory Addresses

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46 Reference Checking for address and interrupt conflicts • It is necessary to ensure that the I/O and memory addresses reserved for the graphics board are not used by other hardware devices. • The integrated on-board VGA controller of your Fire GL4 uses the following addresses (hex): I/O Address: Standard VGA I/O: 3B0-3DF Memory Addresses: Video RAM: A000-BFFF Video ROM: C000-C7FF Note: You cannot change the addresses of your Fire GL4. In case of an address conflict, try to modify the I/O address of the add-on card that causes the conflict. Resolving Interrupt Conflicts To support the special graphics processor on the Fire GL4 the system BIOS should automatically assign a system interrupt to the AGP slot where the card is installed. However, there may be problems if your graphics card does not receive an interrupt or a system interrupt is used for more than one device. In case of problems try the following: • Check the system configuration utility of your operating system for the interrupt assignments. • Inspect your system BIOS setup for an option that says "Assign IRQ to VGA" or something similar and ensure that this option is enabled. If you do not have this option and your graphics card does not receive an interrupt, contact your motherboard manufacturer for an updated BIOS that has this option. Some older ISA legacy add-in cards (with jumpers, non-PnP) may cause a conflict if they are not configured in the ESCD (extended system configuration data) area of the system BIOS. Please refer to your computer's User's Guide for information on using the ISA Configuration Utility (ICU) to add the required legacy card resources to the system.

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46
Reference
Checking for address and interrupt conflicts
•
It is necessary to ensure that the I/O and memory addresses
reserved for the graphics board are not used by other
hardware devices.
•
The integrated on-board VGA controller of your Fire GL4 uses
the following addresses (hex):
I/O Address:
Standard VGA I/O: 3B0-3DF
Memory Addresses:
Video RAM:
A000-BFFF
Video ROM:
C000-C7FF
Note:
You cannot change the addresses of your Fire GL4.
In case of an address conflict, try to modify the I/O address
of the add-on card that causes the conflict.
Resolving Interrupt Conflicts
To support the special graphics processor on the Fire GL4 the
system BIOS should automatically assign a system interrupt to the
AGP slot where the card is installed. However, there may be
problems if your graphics card does not receive an interrupt or a
system interrupt is used for more than one device. In case of
problems try the following:
•
Check the system configuration utility of your operating system
for the interrupt assignments.
•
Inspect your system BIOS setup for an option that says
"Assign IRQ to VGA" or something similar and ensure that this
option is enabled. If you do not have this option and your
graphics card does not receive an interrupt, contact your
motherboard manufacturer for an updated BIOS that has this
option.
Some older ISA legacy add-in cards (with jumpers, non-PnP) may
cause a conflict if they are not configured in the ESCD (extended
system configuration data) area of the system BIOS. Please refer to
your computer
’
s User
’
s Guide for information on using the ISA
Configuration Utility (ICU) to add the required legacy card resources
to the system.