Dell Inspiron 2000 User Manual download pdf (Page 9)

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 Table 2 to configure the device for one of the available IRQ lines.

Table 2. IRQ Line Assignments

0270:Real time clock

error

The CMOS battery that supports data

stored in NVRAM may be dead.

Call Dell for technical assistance.

0231:Shadow RAM

failed at offset:

nnnn

Shadow RAM failed at address nnnn.

Call Dell for technical assistance.

0210:Stuck Key

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.

Run the Stuck Key test in the Dell Diagnostics. If the problem cannot

be corrected, call Dell for technical assistance.

0250:System battery

is dead—Replace and

run Setup

The system battery does not have

enough charge to power the

computer.

Connect the computer to electrical power to recharge the battery, or

replace the battery. Then check your system setup settings.

02D0:System cache

error—cache disabled

The primary cache internal to the

microprocessor has failed.

Call Dell for technical assistance.

0251:System CMOS

checksum bad—default

configuration used

The BIOS has been changed.

CMOS has been corrupted or

modified, possibly by an application

program that changes data stored in

CMOS.

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.

0230:System RAM

failed at offset:

nnnn

System RAM failed at address nnnn

in the 64-KB block at which the error

was detected.

Call Dell for technical assistance.

0260:System timer

error

A chip on the system board may be

malfunctioning.

Run the System Set test group and the Keyboard Controller Test in

the Dell Diagnostics.

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.

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

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Dell Inspiron 2000 User Manual Page 9

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