APIC ACPI SCI IRQ
Possible values of an option:
The option description:
There are two implementations of this option. At first, along with considered, in BIOS there can be an option which is responsible for switching-on and shut-down of the expanded controler of interruptions (APIC). Then, if you involved the expanded controler of the interruptions, the given option defines, whether divided interruptions ([Enabled]) for informing of an operating system on various events (we tell, about the fact of button click POWER on the system unit) or not ([Disabled]) will be used by a subsystem of the expanded configuring and control of a supply. As usage of divided interruptions with numbers 20—23 is the standard for this mode of the controler, the option should be included. Otherwise interruptions from a range 9—11 will be used.
Secondly, in the absence of the separate option which are responsible for switching-on and shut-down of the expanded controler of interruptions, the given option just also will fulfill its functions. If your operating system supports the expanded controler of interruptions (Windows NT, Windows 2000, Windows XP, Windows 2003 and Windows Vista), include ([Enabled]) the given option. Otherwise (in particular for Windows 95, Windows 98 and Windows Me) value [Disabled] should be installed.
It is necessary to consider and one more moment — the expanded controler of interruptions is a subsystem of the expanded configuring and control of a supply (ACPI). If you disconnect ACPI, you should refuse and usage of the expanded controler of interruptions.
To select an operation mode of the controler of interruptions (expanded or normal) it is necessary before operating system setting. Change of value of this option later is capable to break its normal functioning. Is mandatory involve an enhanced mode if at you the multiprocessor configuration, the processor with the virtual multithreading (Hyper-Treading) or having some kernels is installed. Only one processor (one kernel) otherwise will function, and remaining will be blocked.