[OpenBSD]

Manual Page Search Parameters
ioapic(4/amd64) I/O Advanced Programmable Interrupt Controller
ioapic(4/i386) I/O Advanced Programmable Interrupt Controller

IOAPIC(4) Device Drivers Manual (amd64) IOAPIC(4)

ioapic
I/O Advanced Programmable Interrupt Controller

ioapic0 at mainbus0

ioapic is an I/O Advanced Programmable Interrupt Controller (APIC). It provides interrupt management for systems with multiple I/O subsystems and can distribute interrupts across multiple processors.

intro(4)

ioapic is based on Intel's 82093AA I/O Advanced Programmable Interrupt Controller (I/O APIC) specification.

The ioapic driver first appeared in OpenBSD 3.5.

The ioapic driver was written by Bill Sommerfield.
May 31, 2007 OpenBSD-6.1