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Line 1: A '''Programmable Interrupt Controller''' (or '''PIC''') is an [[Intel]] [[8259A ~~chip~~]] chip that controls [[interrupt]]s. Starting with the [[286]]-based AT, there are two PICs in a [[personal computer]], providing a total of 15 usable IRQs. The PIC has been superseded by an [[IO-APIC \| Advanced Programmable Interrupt Controller]] (APIC), or 82489DX chip, that is enhanced for [[multiprocessor\|multiprocessing]].

Programmable interrupt controller: Difference between revisions