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Interrupt request

In an IBM PC-compatible computer, an interrupt request (or IRQ) is a hardware signal sent to the processor that temporarily stops a running program and allows a special program, an interrupt handler, to run instead. Hardware interrupts are used to handle events such as receiving data from a modem or network card, key presses, or mouse movements.

X86 IRQs, Conflicts & Overview

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Overview

X86 IRQs

Conflicts

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Interrupt request

Nodes56
Edges55
Triples39
Avg. degree1.96
Density0.035714
Components1

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Interrupt request

Top relations

related to Conflicts · 18
Interrupt request → ACPI, For, IBM-compatible, In, Initially, Intel, IRQ, IRQ4, IRQ9, ISA MPU-401, LPT1, MPU-401, MPU-401 MIDI, PIC, Programmable Interrupt Controller, SCI, The, The PIC
related to x86 IRQs · 12
Interrupt request → CPU, Early PCs, Intel, IRQ, IRQs, PCs, PIC, PICs, The, There, This, Typically
related to overview · 5
Interrupt request → BIOS, Modern, There, These, When

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Important terminology

irq interrupt intel lines isa systems hardware pic system 8259 irqs interrupts apic computer used devices controller x86 pci port

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
receiving data from a modem or network cardinstance ofHardware interrupts are used to handle events0.80text
key pressesinstance ofHardware interrupts are used to handle events0.80text
or mouse movements.Interrupt lines are often identified by an index with the format of IRQ followed by a numberinstance ofHardware interrupts are used to handle events0.80text
Windows 95 OSR2 may use PIR table to process PCI IRQ steeringinstance ofOperating systems0.80text
Interrupt requestrelated to ConflictsIn0.60section
Interrupt requestrelated to ConflictsIBM-compatible0.60section
Interrupt requestrelated to ConflictsIRQ0.60section
Interrupt requestrelated to ConflictsProgrammable Interrupt Controller0.60section
Interrupt requestrelated to ConflictsPIC0.60section
Interrupt requestrelated to ConflictsThe PIC0.60section
Interrupt requestrelated to ConflictsFor0.60section
Interrupt requestrelated to ConflictsIRQ40.60section

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