Troubleshooting
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…
A quick review of the basic IRQ mapping is given below for your reference.
IRQ#
Description
IRQ #0
System Timer
IRQ #1
Keyboard
IRQ #2
Unassigned
IRQ #3
COM2
IRQ #4
COM1
IRQ #5
Unassigned
IRQ #6
Floppy Disk Controller
IRQ #7
Parallel port
IRQ #8
Real-time Clock
IRQ #9
Microsoft ACPI-Compliant System
IRQ #10
Unassigned
IRQ #11
Unassigned
IRQ #12
PS/2 mouse
IRQ #13
Data Processor
IRQ #14
Primary IDE Controller
IRQ #15
Secondary IDE Controller
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.
ROBO-8717VG2A User’s Manual
5-3
