Acer Aspire E1-521 - Page 39

Hardware Specifications and Configurations 1-32
System Interrupt Specification
Hardware IRQ System Function
IRQ0 High precision event timer
IRQ1 Standard PS/2 Keyboard
IRQ2 Cascaded
IRQ3 AMD EHCI USB Controller (7808, 7808)
IRQ4
AMD High Definition Audio controller(780D)
Ethernet controller(1083)
IRQ6 Diskette drive
IRQ7* Parallel port
IRQ8 High precision event timer
IRQ9* Microsoft ACPI-compliant system
IRQ10*
ATI High Definition Audio controller(1314)
AMD AHCI 1.0 SATA controller(7801)
Atheros Network controller(0032)
IRQ11
ATI VGA compatible controller(9809)
AMD USB Controller(7812)
AMD OHCI USB Controller(7807, 7807)
Realtek Device Does Not Fit In Class Code(5209)
IRQ12 ELAN PS/2 Port Smart-Pad
IRQ13 Numeric data processor
IRQ14 Primary IDE channel
IRQ15 Secondary IDE channel
NOTE:
* Default configuration, audio possible configurations are IRQ5, IRQ7, IRQ9, IRQ10, or none.