Dell Inspiron 3700 Reference And Troubleshooting Manual page 58

3-10 Dell Inspiron 3700 System Reference and Troubleshooting Guide

  
IRQ0 Reserved; generated by the system timer
IRQ1 Reserved; generated by the keyboard controller to signal that
the keyboard output buffer is full
IRQ2 Reserved; generated internally by the interrupt controller to
enable IRQ8 through IRQ15
IRQ3 Available for use by a PC Card unless the integrated serial port
or infrared port is configured for COM2 or COM4
IRQ4 Available for use by a PC Card unless the integrated serial port
or infrared port is configured for COM1 (the default) or COM3
IRQ5 Available for use by the audio controller
IRQ6 Generated by the diskette drive controller to indicate that the
diskette drive requires the attention of the microprocessor
IRQ7 Available for use by a PC Card or audio controller if the parallel
port is disabled
IRQ8 Reserved; generated by the system I/O controller's RTC
IRQ9 Reserved; generated by the video controller
IRQ10 Available for use by a PC Card or audio controller unless the
C/Port Family APR or C/Dock Family Expansion Station is
attached
IRQ11 Generated by USB, PC Card, and audio controllers; available for
use by a PC Card
IRQ12 Reserved; generated by the keyboard controller to indicate that
the output buffer of the DualPoint integrated pointing device or
the external PS/2 mouse is full
IRQ13 Reserved; generated by the math coprocessor
IRQ14 Reserved; generated by the hard-disk drive to indicate that the
drive requires the attention of the microprocessor
IRQ15 Reserved; generated by CD-ROM drive in the media bay
to indicate that the drive requires the attention of the
microprocessor
NOTE: For the full name of an abbreviation or acronym used in this table, see the Glossary
in the system Help.