Dell Inspiron 2000 - Manual (Page 47)

support.dell.com Basic Troubleshooting 3-9
Some programs may leave portions of their setup information behind, even though
you have exited from them. As a result, other programs cannot run. Rebooting the
computer can confirm whether or not these programs are the cause of the problem.
Other programs use specialized subroutines called drivers that can cause problems in
the computer. For example, a variation in the way the data is sent to an external
monitor may require a special screen driver program that expects a certain kind of
video mode or monitor. In such cases, you may have to develop an alternative method
of running that particular program—for example, the creation of a boot file made
especially for that program. For help with this situation, call the support service
offered by the manufacturer of the software you are using.
Problems can arise if two devices attempt to use the same interrupt request (IRQ)
line. To avoid this type of conflict, check the documentation for the default IRQ line
setting for each installed device. Then consult Table 3-2 to configure the device for
one of the available IRQ lines.
NOTES: Installed devices cannot share the same COM port address. The default
address of the computer’s serial port is COM1.
To view IRQ line assignments in the Microsoft Windows 98 operating system, click
the Start button, point to Settings, and click Control Panel. Double-click the System
icon. Select the Device Manager tab, and then double-click Computer.
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IRQ0 Reserved; generated by the system timer
IRQ1 Reserved; generated by the keyboard controller to signal that
the keyboard output buffer is full
IRQ2 Cascade from the secondary interrupt controller
IRQ3 Available
IRQ4 Serial port; available if serial port is not configured for COM1 or
COM3
IRQ5 Available
IRQ6 Generated by the diskette drive controller to indicate that the
diskette drive requires the attention of the microprocessor
IRQ7 Parallel port; available if parallel port is disabled
IRQ8 Reserved; generated by the system I/O controller's real time
clock
NOTE: For the full name of an abbreviation or acronym used in this table, see the Glossary
in the system Help.