Epson ETX-945 - Manual (Page 34)

ETX-945 User Manual 1.02 www.diamondsystems.com Page 34
5.3 Interrupt Request (IRQ) Lines
Peripheral devices use interrupt request lines to notify CPU when services are required. The table below lists the
interrupt request channels used by the ETX-945
’s onboard devices.
IRQ Level Function
IRQ 01 Standard 0 / 02-Key or Microsoft Natural PS/2 Keyboard
IRQ 03 Communications Port
IRQ04 Communications Port
IRQ 08 System CMOS/real time clock
IRQ 09 Microsoft ACPI-Compliant System
IRQ 10 Communications Port
IRQ 11 Communications Port
IRQ 12 PS/2 Compatible Mouse
IRQ 13 Math Coprocessor
IRQ 14 Primary IDE Channel
IRQ 15 Intel 8280 G (ICH7 Family) SMBus Controller - 27DA
IRQ 16 Intel 8280 G (ICH7 Family PCI Express Root Port - 27D0
IRQ 16 Intel 8280 G (ICH7 Family) USB Universal Host Controller - 27CB
IRQ 16 Mobile Intel 94 GM Express Chipset Family
IRQ 17 Realtek AC’97 Audio
IRQ 18 Intel 8280 G (ICH7 Family) PCI Express Root Port - 27D4
IRQ 18 Intel 8280 G (ICH7 Family) USB Universal Host Controller - 27CA
IRQ 19 Intel 8280 G (ICH7 Family) USB Universal Host Controller - 27C9
IRQ 19 Intel 8280 G (ICH7-M Family) Serial ATA Storage Controller - 27C4
IRQ 19 Intel 8280 G (ICH7 Family) USB Universal Host Controller - 27C9
IRQ 20 Intel PRO/ 00 VE Network Connection
IRQ 23 Intel 8280 G (ICH7 Family) USB Universal Host Controller - 27C8
IRQ 23 Intel 8280 G (ICH7 Family) USB2 Enhanced Host Controller - 27CC