EVOC M50 Series, Manual, Page: 188 / 250

BIOS Setup
· 58 · M50 SERIES
 IRQ Assignment Table
There are 15 interrupt sources of the system. Some have been occupied by the
system devices. Only the ones that are not occupied can be assigned to other
devices. ISA device requests exclusive use of its interrupt. Only the plug and
play ISA devices can be assigned by the UEFI or the OS. And several PCI
devices can share one interrupt, which is assigned by UEFI or OS. Interrupt
assignment of some devices of X86 platform is shown in the table below, but it
does not show the interrupt source occupied by the PCI devices.
Interrupt No. Device Description
IRQ0 System timer
IRQ1 PS/2 standard keyboard
IRQ2 Reserved
IRQ3 COM2
IRQ4 COM1
IRQ5 Reserved
IRQ6 Reserved
IRQ7 Reserved
IRQ8 System CMOS/read time clock
IRQ9 Reserved
IRQ10 Reserved
IRQ11 PCI data acquisition and signal processing controller
IRQ12 Microsoft PS/2 Mouse
IRQ13 Numeric data processor
IRQ14 Motherboard resources
IRQ15 Reserved