SBC86840 Series All-In-One Mini ITX Board User’s Manual
Hardware Description
43
3.5 Interrupt
Controller
The
SBC86840 Series
is a 100% PC compatible control board. It
consists of 16 interrupt request lines, and four out of them can be
programmable. The mapping list of the 16 interrupt request lines is
shown as the following table.
IRQ
Parity Check Error
IRQ0 System
timer
IRQ1 Keyboard
IRQ2
Interrupt rerouting from IRQ8 through IRQ15
IRQ3
Communications Port (COM2)
IRQ4
Communications Port (COM1)
IRQ5
PCI Device Share
IRQ6
Floppy Disk Controller
IRQ7
Printer port #1
IRQ8
System CMOS/Real time clock
IRQ9 ACPI
Controller
IRQ10
Communications Port (COM3)
IRQ11
Communications Port (COM4)
IRQ12
PS/2 Compatible Mouse
IRQ13
Numeric data processor
IRQ14
Primary IDE Channel
IRQ15
Secondary IDE Channel
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