Appendix a: system resources, A.1 interrupt request (irq) lines, Jrex plus - dc user's guide – Kontron JRexplus-DC User Manual
Page 64: Legacy mode
KTD-S0008-F
Page 59
Appendix A: System Resources
JRexplus-DC User's Guide
Appendix A: System Resources
A.1
Interrupt Request (IRQ) Lines
Please ensure that the chosen interrupt is not already in use by PCI devices. This table is only valid in legacy
mode (e.g. DOS) - most operating systems are using the APIC assignment.
Legacy mode
IRQ #
Used for
Available
Comment
0
Timer 0
No
1
Keyboard
No
2
8259 Slave (Cascade)
No
3
Yes
Possible IRQ of COM2
4
Serial Port 1 (COM1)
No
Note (1)
5
PCI IRQ
for PCI
Dynamic
6
PCI IRQ
for PCI
Dynamic
7
Parallel Port (LPT)
No
Note (1)
8
Real Time Clock (RTC)
No
9
ACPI Power Management
No
10
PCI IRQ
for PCI
Dynamic
11
PCI IRQ
for PCI
Dynamic
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 (1)