21 Appendix A
Table A.2: UNO-4678 Interrupt Assignments
Interrupt No. Interrupt Source
NMI Parity error detected
IRQ 0 Interval timer
IRQ 1 Keyboard
IRQ 2 Interrupt from controller 2 (cascade)
IRQ 3 Free
IRQ 4 Free
IRQ 5 Free
IRQ 6 Diskette controller (FDC)
IRQ 7 Free
IRQ 8 Real-time clock
IRQ 9 Free
IRQ 10 Free
IRQ 11 Reserved for watchdog timer
IRQ 12 PS/2 mouse
IRQ 13 INT from co-processor
IRQ 14 Primary IDE
IRQ 15 Secondary IDE for CompactFlash
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