ocr: Loca Local Local Loca APC APIC APIC APIC Interrupt Confroller communications (ICqbus 1/0 - APIC 1/0 APIC 1/0 APIC - - - YM 444 ITTIT IITIT ITIITT Figure 3: The Intel Mattiprocessor spectfication defines the basic BIOS functions and interrpt arcoitectitre jor a sbared-memory mittiprocessing systent. mbe mterrupr system IS based upon Advanced Programmable Interrupt controter: (APIC) arcbitecture that can mimic the singie-processor interrupt system fotina in a basic Al-compatibte PC, as well as a distributed interrupt systen used by multiprocessing operating systems.
