Intel 8259 - WikipediaThis article includes a list of general references, but it lacks sufficient corresponding inline citations. Please help to improve this article by introducing more precise citations. (September 2013) (Learn how and when to remove this message) Closeup of an Intel 8259A IRQ chip from a PC XT. Pinout The Intel 8259 is a programmable interrupt controller (PIC) designed for the Intel 8085 and 8086 mic
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