Appendix CIRQ and I/O Port AddressThe factory-set interrupt requests and I/O port addresses are listed below. Find an appropriate one toinstall an optional device.Interrupt RequestThe factory-set IRQs are assigned as follows:IRQ Peripheral Device (Controller) IRQ Peripheral Device (Controller)0 System timer 8 Real-time clock1 Keyboard 9 SCI2 Cascade connection 10 –3 COM2 serial port 11 –4 COM1 serial port 12 Mouse5 – 13 Numeric processor6 – 14 –7 – 15 –PIRQ and PCI DeviceThe factory-set PCI device interrupts are stationarily assigned as follows.Menu Option InterruptPCI IRQ 1 PCI1 INTA, LAN, PCI2 INTA, PCI3 INTA, USB1, USB2, AudioPCI IRQ 2 SATA1, SATA2PCI IRQ 3 –PCI IRQ 4 –PCI IRQ 5 –PCI IRQ 6 –PCI IRQ 7 –PCI IRQ 8 –