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Line 6: There are a number of common priority schemas in PICs including hard priorities, specific priorities, and rotating priorities. Interrupts may be either [[interrupt#Edge-triggered\|edge triggered]] or [[interrupt#Level-~~trigerred~~triggered\|level triggered]]. There are a number of common ways of acknowledging an interrupt has completed when an EOI is issued. These include specifying which interrupt completed, using an implied interrupt which has completed (usually the highest priority pending in the ISR), and treating interrupt acknowledgement as the EOI.

Programmable interrupt controller: Difference between revisions