Dell Inspiron 2000 User Manual download pdf (Page 47)

support.dell.com Basic Troubleshooting 3-9

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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.

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