misc Directory Reference

Files
	acpi.c
	x86: ACPI's tables, and powering off.
	apic.c
	x86: the APIC, the local APICs and the I/O APICs.
	cmos.c
	x86: the PC's real time clock, in the CMOS: the date and time, which the kernel reads to set its clock at boot (arch_time_get()).
	hpet.c
	x86: the High Precision Event Timer (HPET), as a clock.
	irq.c
	x86: devices' interrupts (IRQs), whichever controller brings them: the 8259s or the APIC, each an x86_irq_chip.
	pic.c
	x86: the PC's two 8259 programmable interrupt controllers (PICs).
	pit.c
	x86: the 8254 programmable interval timer (PIT).