Interrupt Priority Register

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• Interrupt — This article is about computer interrupts. For the study of the effect of disruptions on job performance, see Interruption science. In computing, an interrupt is an asynchronous signal indicating the need for attention or a synchronous event in… …   Wikipedia

• Programmable Interrupt Controller — A Programmable Interrupt Controller (PIC) is a device which allows priority levels to be assigned to its interrupt outputs. When the device has multiple interrupt outputs to assert, it will assert them in the order of their relative priority.… …   Wikipedia

• Advanced Programmable Interrupt Controller — In computing, an Advanced Programmable Interrupt Controller (APIC) is a more complex Programmable Interrupt Controller (PIC) than Intel s original types such as the 8259A. APIC devices permit more complex priority models, and Advanced IRQ… …   Wikipedia

• End of interrupt — An End Of Interrupt (EOI) is a signal sent to a Programmable Interrupt Controller (PIC) to indicate the completion of interrupt processing for a given interrupt. An EOI is used to cause a PIC to clear the corresponding bit in the In Service… …   Wikipedia

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• Intel 8259 — The Intel 8259 is a family of Programmable Interrupt Controllers (PICs) designed and developed for use with the Intel 8085 and Intel 8086 8 bit and 16 bit microprocessors. The family originally consisted of the 8259, 8259A, and 8259B PICs, though …   Wikipedia

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