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 alternate method of running that particular program—by creating a start-up file made especially for that program, for example. Call the support service for the software you are using to help you with this problem.

Avoiding Interrupt Assignment Conflicts

Problems can arise if two devices attempt to use the same IRQ line. To avoid this type of conflict, check the documentation for the IRQ line's default for each installed expansion card. Then consult Table 3-1 to configure the card for one of the available IRQ lines.

Table 3-1. IRQ Line Assignment Defaults

IRQ Line

Used By/Available

 

 

 

 

IRQ0

Used by the system timer

 

 

 

 

IRQ1

Used by the keyboard controller

 

 

 

 

IRQ2

Used by interrupt controller 1 to enable IRQ8 through IRQ15

 

 

 

 

IRQ3

Used by serial port 2 (COM2 and COM4)

 

 

 

 

IRQ4

Used by serial port 1 (COM1 and COM3)

 

 

 

 

IRQ5

Available unless used by a secondary parallel port

 

 

 

 

IRQ6

Used by the diskette drive controller

 

 

 

 

IRQ7

Used by the primary parallel port

 

 

 

 

IRQ8

Used by the real-time clock

 

 

 

 

IRQ9

Used for power management functions

 

 

 

 

IRQ10

Available

 

 

 

 

IRQ11

Available

 

 

 

 

IRQ12

Used by the PS/2 mouse port unless the mouse is disabled in the System Setup program

 

 

 

 

IRQ13

Used by the math coprocessor

 

 

 

 

IRQ14

IDE CD-ROM controller

 

 

 

 

IRQ15

Embedded server management

 

 

 

 

NOTE: For the full name of an abbreviation or acronym used in this table, see the abbreviations and acronyms list at the end of this guide.

 

 

 

 

 

 

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Dell 2500 manual Avoiding Interrupt Assignment Conflicts, IRQ Line Used By/Available

2500 specifications

The Dell 2500 is a remarkable embodiment of innovation in the world of computing. Renowned for its robust performance and versatility, the Dell 2500 caters to a wide array of users, from businesses to educational institutions, and even casual home users. Equipped with cutting-edge features and technologies, it stands out in the competitive market of laptops and desktops.

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In summary, the Dell 2500 combines powerful performance, stunning visuals, ample storage, extensive connectivity options, and robust security measures to cater to a diverse range of users. Its thoughtful design and innovative technologies make it a top contender in today’s computing landscape, ensuring that it meets the demands of modern work and play.