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C. irq and i/o port address, Appendix c, Irq and i/o port address – NEC Server 140Rc-4 User Manual

Page 369

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Appendix C

IRQ and I/O Port Address

The factory-set interrupt requests and I/O port addresses are listed below. Find an appropriate one
to install an optional device.

Interrupt Request

The factory-set IRQs are assigned as follows:

IRQ

Peripheral Device (Controller)

IRQ

Peripheral Device (Controller)

0

System timer

8

Real-time clock

1

Keyboard

9

PCI/SCI

2

Cascaded connection

10

PCI (BMC IRQ)

3

COM B serial port (PCI)

11

BMCIRQ/PCI/ISA

4

COM A serial port (PCI)

12

Mouse

5

PCI/LPT2 parallel port (BMC IRQ)

13

Numeric processor

6

Floppy disk

14

Primary IDE (CD-ROM drive)

7

LPT1 parallel port

15

PCI

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