Interrupt Assignments

 

Table 1-3. Interrupt Assignments

IRQ Line

Used By/Available

 

 

IRQ0

Generated by system timer.

 

 

IRQ1

Generated by I/O controller to indicate full keyboard output

 

buffer.

 

 

IRQ2

Generated internally by interrupt controller to enable IRQ8

 

through IRQ15.

 

 

IRQ3

Available for use by an expansion card.

 

 

IRQ4

Generated by I/O controller to indicate that the device connected

 

to the serial port requires service (COM1 or COM3).

 

 

IRQ5

Default audio IRQ assignment.

 

 

IRQ6

Generated by I/O controller to indicate that the diskette drive or

 

tape drive requires service.

 

 

IRQ7

Generated by I/O controller to indicate that the device connected

 

to the parallel port requires service.

 

 

IRQ8

Generated by I/O controller for each tick of the RTC.

 

 

IRQ9

Available for use by an expansion card.

 

 

IRQ10

Available for use by an expansion card.

 

 

IRQ11*

Default PCI IRQ assignment.

 

 

IRQ12

Generated by I/O controller to indicate full mouse output buffer.

 

 

IRQ13

Generated by math coprocessor to indicate a coprocessor error.

 

 

IRQ14

Generated by a device connected to the primary EIDE interface to

 

indicate that the device requires service.

 

 

IRQ15

Generated by a device connected to the secondary EIDE interface

 

to indicate that the device requires service. If no device is con-

 

nected to the secondary EIDE interface, IRQ15 is available for

 

use by an expansion card.

*The PCI IRQ line is assigned to an available IRQ line after all ISA expansion cards have been configured. If an ISA expansion card is configured for IRQ11, the PCI IRQ is as- signed to another available IRQ line.

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Dell XPS H266, XPS H233 manual Interrupt Assignments

XPS H233, XPS H266 specifications

The Dell XPS series has long been synonymous with premium laptops and high-performance computing. Among their notable offerings are the XPS H266 and XPS H233 models, which embody cutting-edge technology and thoughtful design.

The XPS H266 comes equipped with a vibrant 15.6-inch InfinityEdge display that provides an immersive visual experience with stunning clarity and a near-borderless design. This model includes options for 4K Ultra HD resolution, which elevates the viewing experience for users who require exceptional graphics and detail, whether for gaming, video editing, or content creation. The display also features touch capability, adding versatility for users who prefer an interactive experience.

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Overall, the Dell XPS H266 and H233 models represent a blend of innovative technology, stylish design, and unparalleled performance, catering to a diverse audience from professionals to entertainment enthusiasts. With features that address the needs of today’s users, these laptops continue to uphold the esteemed reputation of the XPS lineup.