Differences between version 3 and previous revision of APIC.
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| Newer page: | version 3 | Last edited on Sunday, March 14, 2004 5:19:07 am | by StuartYeates | Revert |
| Older page: | version 2 | Last edited on Saturday, March 13, 2004 2:22:39 am | by PhilMurray | Revert |
@@ -1,5 +1,5 @@
-[APIC] is an
[Acronym] for Advanced Programmable Interrupt
Controller. The APIC is split into two parts, the Local APIC and the IO-APIC.
+[Acronym] for __A__dvanced __P__rogrammable __I__nterrupt
Controller. The APIC is split into two parts, the Local APIC and the IO-APIC.
-The Local APIC is found on uniprocessor and mulitprocessor systems and built into recent x86 chips (PentiumPro
and up). The Local APIC can be used by the OS to program interrupts to wake up threads, on [SMP] machines it can be used to send interrupts to another processor. The Local APIC also has a handy timer in it, you can set the timer to whatever you want and it'll start generating interrupts.
+The Local APIC is found on uniprocessor and mulitprocessor systems and built into recent [
x86]
chips (Pentium Pro
and up). The Local APIC can be used by the OS to program interrupts to wake up threads, on [SMP] machines it can be used to send interrupts to another processor. The Local APIC also has a handy timer in it, you can set the timer to whatever you want and it'll start generating interrupts.
-The IO-APIC is only really useful for SMP systems. It is used for sending various interrupts to various [CPU]s in the system. Without an IO-APIC interrupts from hardware only get delivered to the boot [CPU]. Another advantage is that [PCI] interrupts can be sent around the system without overlapping [IRQ]s.
+The IO-APIC is only really useful for [
SMP]
systems. It is used for sending various interrupts to various [CPU]s in the system. Without an IO-APIC interrupts from hardware only get delivered to the boot [CPU]. Another advantage is that [PCI] interrupts can be sent around the system without overlapping [IRQ]s.
