Interrupt Controller - AXIOMTEK EP820 Series User Manual

3.5

Interrupt Controller

The EP820 Series is a 100% PC compatible control board. It consists
of 24 interrupt request lines. Four out of sixteen nterrupt request lines
are programmable. The mapping list of these 16 interrupt request lines
is shown as the following table.
NMI
IRQ0 System timer output
IRQ1 Keyboard
IRQ2 Interrupt rerouting from IRQ8 through IRQ15
IRQ3 Serial port #2
IRQ4 Serial port #1
IRQ5 Intel 82801FB/FBM SMBus Controller
IRQ6 Floppy disk controller
IRQ7 Parallel port #1
IRQ8 Real time clock
IRQ9 Microsoft ACPI-Compliant System
IRQ12 PS/2 Mouse
IRQ13 Math coprocessor
IRQ14 Primary IDE channel
IRQ15 Secondary IDE Channel
IRQ16 Intel 82801FB/FBM USB UHC
IRQ16 Mobile Intel 915GM Express Chipset Family
IRQ17 Realtek AC97 Audio
IRQ18 Intel 82801FB/FBM USB UHC
IRQ19 Intel 82801FB/FBM USB UHC
IRQ20 Intel PRO/100 VE Network Connection
IRQ21 Intel PRO/100 M Network Connection
IRQ23 Intel 82801FB/FBM USB UHC
IRQ23 Intel 82801FB/FBM USB EHC
Hardware Description
EP820 All-In-One EPIC Board User's Manual
Parity check error
33