80
Troubleshooting Your System
Checking the Equipment
This section provides troubleshooting procedures for external devices attached to the system, such as the
monitor, keyboard, or mouse. Before you perform any of the procedures, see "Troubleshooting External
Connections" on page 81.
Troubleshooting IRQ Assignment Conflicts
Most PCI devices can share an IRQ with another device, but they cannot use an IRQ simultaneously. To
avoid this type of conflict, see the documentation for each PCI device for specific IRQ requirements.
Table 4-2 lists the IRQ assignments.
Table 4-2.
IRQ Assignment Defaults
IRQ Line
Assignment
IRQ0
System timer
IRQ1
Keyboard controller
IRQ2
Interrupt controller 1 to enable IRQ8 through IRQ15
IRQ3
Available
IRQ4
Serial port 1 (COM1 and COM3)
IRQ5
Available
IRQ6
Available
IRQ7
Available
IRQ8
Real-time clock
IRQ9
ACPI functions (used for power management)
IRQ10
Available
IRQ11
Available
IRQ12
PS/2 mouse port (available if the mouse is disabled through the System Setup
program)
IRQ13
Math coprocessor
IRQ14
IDE optical drive controller (available if IDE CDROM controller is disabled through
the System Setup program)
IRQ15
Reserved (available if IDE CDROM controller is disabled through the System Setup
program)
Summary of Contents for PowerEdge 860
Page 8: ...8 Contents ...
Page 28: ...28 About Your System ...
Page 42: ...42 Using the System Setup Program ...
Page 78: ...78 Installing System Components ...
Page 102: ...102 Jumpers and Connectors ...
Page 136: ...136 Glossary ...