User`s guide

3E8h – 3EFh

3F8h – 3FFh

778h – 77Fh

A00h – BFFh

Parts of these ranges are not available if a Super I/O is used on the carrier board. If a Super I/O is not implemented on the carrier board,

then these ranges are available for customer use. If you require additional LPC Bus resources other than those mentioned above, or more

information about this subject, contact congatec technical support for assistance.

8.3 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.