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8 System Resources
Kontron User's Guide ETX CD 50
8 System Resources
8.1 Interrupt Request (IRQ) Lines
In 8259 PIC mode:
IRQ # Used For Available Comment
0 Timer0 No
1 Keyboard No
2 Slave 8259 No
3 COM2 No Note (1)
4 COM1 No Note (1)
5 LPT2 Yes Note (2)
6 Floppy Drive Controller No Note (1)
7 LPT1 No Note (1)
8 RTC No
9 SCI No
10 COM3 Yes Note (2)
11 COM4 Yes Note (2)
12 PS/2 Mouse No Note (1)
13 FPU No
14 IDE0 No Note (1)
15 SATA No Note (3)
Note: 1 If the “Used For” device is disabled in setup, the corresponding interrupt is available for other devices.
2 Unavailable if baseboard is equipped with an I/O controller SMC FDC37C669, and the device is enabled in
setup.
3 Unavailable in SATA legacy mode. It cannot be used for PCI, but for ISA bus, when SATA is in enhanced
mode.