Advanced Programmable Interrupt Controller

An Advanced Programmable Interrupt Controller (APIC) is a more intricate Programmable Interrupt Controller (PIC) containing a magnitude more outputs, much more complex priority schemata, and Advanced IRQ management.

One of the best known APIC architectures, the Intel APIC Architecture, is now replacing the original 8259A PIC in newer x86 PCs.

More Information

More information on the Intel APIC can be found in the IA-32 Intel Architecture Software Developer’s Manual, Volume 3A: System Programming Guide, Part 1, freely available on the Intel website.

See also

• Intel 8259
• Programmable Interrupt Controller
• Intel APIC Architecture
• Inter-Processor Interrupt
• Interrupt
• Interrupt Handler
• Interrupt Latency
• Non-Maskable Interrupt

External links

• A real down to earth explanation of interrupts and interrupt-controllers

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