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TCEDm11
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9.3
Interrupt Request (IRQ) Lines
Table 30 IRQ Lines in PIC mode
IRQ#
Available
Typical Interrupt Source
Connected to Pin
0
No
Counter 0
Not applicable
1
No
Keyboard
Not applicable
2
No
Cascade Interrupt from Slave PIC
Not applicable
3
Yes
IRQ3 via SERIRQ or PCI BUS INTx
4
Yes
IRQ4 via SERIRQ or PCI BUS INTx
5
Yes
IRQ5 via SERIRQ or PCI BUS INTx
6
Yes
IRQ6 via SERIRQ or PCI BUS INTx
7
No
Reserved for BIOS purposes
8
No
Real-time Clock
Not applicable
9
No
SCI
Not applicable
10
Yes
IRQ10 via SERIRQ or PCI BUS INTx
11
Yes
IRQ11 via SERIRQ or PCI BUS INTx
12
Yes
IRQ12 via SERIRQ or PCI BUS INTx
13
No
Math processor
Not applicable
14
Yes
PCI BUS INTx
15
Yes
PCI BUS INTx
Note
In PIC mode, the PCI bus interrupt lines can be routed to any free IRQ.
