United States December 16, 2002
Maintenance & Service Guide
Presario 5600 Series Personal Computers
MSG Index
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Resolving Hardware Conflicts
Hardware conflicts occur when two or more peripheral devices attempt to use the same hardware
resources. I/O addresses, interrupts, and DMA channels are the most common hardware
resources used by peripheral devices. For example, the factory default settings for the MIDI port
audio interface are:
Audio Interface
Base I/O
address
220H
MIDI Port Base
I/O address
330H
Interrupt
IRQ 5
8-bit DMA
Channel 1
When different peripheral devices use the same hardware resources at the same time, the
devices or the system may not function properly. You can resolve hardware conflicts by ensuring
that no devices are configured to use the same hardware resources. These resources can either
be dipswitch or jumper settings on the peripheral card or software configurable resources. The
Computer Setup selection of your Compaq Utilities allows you to view and modify the settings for
the peripheral devices factory installed in your system. Refer to the
User's Guide
for the
particular peripheral cards you wish to install for information on how to view and select their
settings.
To resolve hardware conflicts:
1. Change the hardware settings of your audio card or other peripheral card in your system if the
peripheral card is using any settings used by the factory-installed devices.
2. If you are unsure of the settings of the peripheral cards, you can isolate the source of the
problem by temporarily removing all cards not manufactured by Compaq, or by resetting the
default settings and running Compaq Utilities. After that, add the cards back one at a time until
the card that is causing the conflict is found.
