Interrupts - Unisys Aquanta CP Series Configuration Manual

Interrupts

Two interrupt controllers are provided by the Intel PIIX3 PCI chipset. Sixteen
interrupts are provided as follows:
3814 9779–000
Table A–12. Interrupt Functions
IRQ No Function
0 Interval Timer
1 Keyboard
2 Cascade Interrupt from PIC
3 Serial Port 2
4 Serial Port 1
5 Available
6 Floppy Drive
7 Parallel Port
8 Real Time Clock
9 Available
10 Available
11 Available
12 PS/2 Mouse
13 Numeric Processor
14 Primary IDE
15 Secondary IDE
System Specifications
A–15