This section includes information on:

system interrupt request (IRQ) default settings viewing system resources

jumper settings for the system board.

IRQ Settings

The following settings are the default IRQ settings:

IRQ0 (timer)

IRQ1 (keyboard)

IRQ2 (cascade interrupt)

IRQ3 (COM2)

IRQ4 (COM1)

IRQ5 (LPT2/sound/user available)

IRQ6 (diskette drive)

IRQ7 (LPT1)

IRQ8 (real time clock)

IRQ9 (reserved)

IRQ10 (USB/user available)

IRQ11 (Windows Sound System/user available)

IRQ12 (mouse)

IRQ13 (numeric processor)

TIRQ14 (primary IDE) IRQ15 (secondary IDE).

System Resource Information

Some hardware option installations might require system resources such as IRQ lines, direct memory access (DMA) channels, and input/output (I/O) addresses.

Follow these steps to view system resources:

1.From the Windows desktop, click the “My Computer” icon with the right mouse button.

2.Click Properties. The “System Properties” dialog box appears.

3.Click the “Device Manager” tab.

C-2 System Resources

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NEC SP B-Series manual IRQ Settings, System Resource Information, System Resources