APIC Timer: Difference between revisions

[unchecked revision]

Content deleted Content added

Inline

Revision as of 07:46, 15 August 2015 view source osdev>Sapphirebeauty m Spelling and Grammar ← Older edit		Revision as of 07:48, 15 August 2015 view source osdev>Sapphirebeauty m is Newer edit →
Line 1:		Line 1:
	The great benefit of the Local APIC timer that it is hardwired to each CPU core, unlike the [[PIT\|Programmable Interval Timer]] which is a separate circuit. Because of this, there is no need for any resource management, which makes things easier. The downside is that it's oscillating at (one of) the CPU's frequencies, which varies from machine to machine, while the PIT uses a standard frequency (1193182 Hz). To make use of it, you have to know how many interrupts/sec it's capable of.		The great benefit of the Local APIC timer is that it is hardwired to each CPU core, unlike the [[PIT\|Programmable Interval Timer]] which is a separate circuit. Because of this, there is no need for any resource management, which makes things easier. The downside is that it's oscillating at (one of) the CPU's frequencies, which varies from machine to machine, while the PIT uses a standard frequency (1193182 Hz). To make use of it, you have to know how many interrupts/sec it's capable of.

	== APIC Timer Modes ==		== APIC Timer Modes ==

Navigation menu