Circuit and method for emulating the functionality of an advance

Details Circuit and method for emulating the functionality of an advance Circuit and method for emulating the functionality of an advance

1995-12-20

1998-03-10

Ray, Gopal C.

395500, G06F 946, G06F 9455

Patent

active

057272174

ABSTRACT:
An Advanced Programmable Interrupt Controller ("APIC") unit utilizing an emulation processor to emulate the operations of a conventional hardware-based APIC. Emulation software executed by the emulation processor handles actual interrupt handling and allows the APIC unit to support any number of interrupt inputs within the bounds of APIC architecture. The APIC unit further comprises actual APIC bus interface circuitry coupling the APIC unit to an APIC bus and redirection tables stored in local memory on-board the emulation processor or external.

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