User`s manual

SBC81206 PICMG 1.0 SBC User’s Manual
Hardware Description
31
4.5 Interrupt Controller
The SBC81206 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 Standard 101/102-Key or Microsoft Natural PS/2
Keyboard
IRQ2 Interrupt rerouting from IRQ8 through IRQ15
IRQ3 Serial port #2
IRQ4 Serial port #1
IRQ6 Standard floppy disk controller
IRQ7 Parallel port
IRQ8 System CMOS/real time clock
IRQ9 Microsoft ACPI-Conpliant System
IRQ12 PS/2 Compatible Mouse
IRQ13 Numeric data processor
IRQ14 Primary IDE channel
IRQ15 Secondary IDE channel