
KTD-S0005-C Page 38 Appendix A: System Resources
MOPSlcdLX User's Guide
Appendix A: System Resources
A.1 Interrupt Request (IRQ) Lines
Please note that KONTRON PC/104 devices were designed after the draft of P996 Specification for ISA
systems. Because of this shareable interrupts are not supported. Please ensure that the chosen interrupt is
not already in use by PCI devices.
IRQ # Used for Available Comment
0 Timer 0 No
1 Keyboard No
2 8259 Slave (Cascade) No
3 Serial Port 2 (COM2) No Note (1)
4 Serial Port 1 (COM1) No Note (1)
5 Yes Note (2)
6 Floppy Controller No Note (1)
7 Parallel Port (LPT1) No Note (1)
8 Real Time Clock (RTC) No
9 Yes
10 PCI IRQ for PCI Dynamic (BIOS default)
11 PCI IRQ for PCI Dynamic (BIOS default)
12 PS/2 Mouse No Note (1)
13 Floating Point Unit (FPU) No
14 IDE Controller (Primary) No Note (1)
15 IDE Controller (Secondary) No
Note (3)
Note: 1) If the Used for device is disabled in the BIOS Setup the corresponding interrupt is free.
2) The parallel port also can be configured for IRQ5.
3) Not usable in Windows
®
since a PCI IDE controller uses always two channels.
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