Irq Assignments - Dell Inspiron 2000 System Reference Manual

0270:Real time clock
error
0231:Shadow RAM
failed at offset:
nnnn
0210:Stuck Key
0250:System battery
is dead—Replace and
run Setup
02D0:System cache
error—cache disabled
0251:System CMOS
checksum bad—default
configuration used
0230:System RAM
failed at offset:
nnnn
0260:System timer
error

IRQ Assignments

Problems can arise if two devices attempt to use the same interrupt request (IRQ) line. To avoid this type of conflict, check the documentation for
the default IRQ line setting for each installed device. Then consult
NOTES: Installed devices cannot share the same COM port address. The default address of your computer's serial port is COM1.
To view IRQ line assignments in the Microsoft® Windows® 98 operating systems, click the Start button, point to Settings, and click
Control Panel. Double-click the System icon. Select the Device Manager tab, and then double-click Computer.
Table 2. IRQ Line Assignments
IRQ
Line Assigned Device
IRQ0 Reserved; generated by the system timer
IRQ1 Reserved, generated by the keyboard controller
IRQ2 Cascade from the secondary interrupt controller
IRQ3 Available
IRQ4 Serial port; available if serial port is not configured for COM1 or COM3
IRQ5 Available
IRQ6 Generated by the diskette drive controller to indicate that the diskette drive requires the attention of the microprocessor
IRQ7 Parallel port; available if parallel port is disabled
IRQ8 Reserved; generated by the real time clock
IRQ9 SCI in ACPI mode
IRQ10 PCI IRQA, B, C, D
IRQ11 Available
IRQ12 Reserved; generated by the keyboard controller to indicate that the output buffer of the touch pad or 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 the CD-ROM or DVD-ROM drive in the external media bay to indicate that the drive requires the attention of
The CMOS battery that supports data
stored in NVRAM may be dead.
Shadow RAM failed at address nnnn. Call Dell for technical assistance.
If the built-in keyboard is being used,
it may be faulty. A key on the built-in
keyboard may have been pressed
while the computer was booting.
The system battery does not have
enough charge to power the
computer.
The primary cache internal to the
microprocessor has failed.
The BIOS has been changed.
CMOS has been corrupted or
modified, possibly by an application
program that changes data stored in
CMOS.
System RAM failed at address nnnn
in the 64-KB block at which the error
was detected.
A chip on the system board may be
malfunctioning.
Table 2
Call Dell for technical assistance.
Run the Stuck Key test in the Dell Diagnostics. If the problem cannot
be corrected, call Dell for technical assistance.
Connect the computer to electrical power to recharge the battery, or
replace the battery. Then check your system setup settings.
Call Dell for technical assistance.
Reboot the computer. As soon as you see the Dell logo screen, press
<F2> to enter the system setup program and reconfigure the system. If
the problem persists, call Dell for technical assistance.
Call Dell for technical assistance.
Run the System Set test group and the Keyboard Controller Test in
the Dell Diagnostics.
to configure the device for one of the available IRQ lines.