Trouble Shooting
ROBO-6710/6730VLA User’s Manual
5-12
disable COM1 serial port to release IRQ #4
disable COM2 serial port to release IRQ #3
disable parallel port to release IRQ #7
disable PS/2 mouse to release IRQ #12,
…, etc.
Interrupt Request Lines (IRQ)
A quick review of the basic IRQ mapping is given below for your reference.
IRQ#
Description
IRQ #0
System Counter
IRQ #1
Keyboard
IRQ #2
Programmed Controller
IRQ #3
COM2
IRQ #4
COM1
IRQ #5
PS/2 Mouse (Shareable)
IRQ #6
Floppy Disk Controller
IRQ #7
Parallel port Controller (Shareable)
IRQ #8
CMOS Clock
IRQ #9
ACPI Controller (Shareable)
IRQ #10
VGA controller (Shareable)
IRQ #11
Ethernet Controller (Shareable)
IRQ #12
Audio Media controller (Shareable)
IRQ #13
Data Processor
IRQ #14
Primary IDE Controller
IRQ #15
Secondary IDE Controller (Shareable)
It is then very easy to find out which IRQ resource is ready for additional
peripherals. If IRQ resource is not enough, please disable some devices listed above
to release further IRQ numbers. The IRQ list will show on the Post sequences as
system hardware checking.
