Irq And I/O Port Address; Appendix C - NEC Express5800 110Ej User Manual

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)
0 System timer
1 Keyboard
2 Cascaded connection
3 COM B
4 COM A
5 PCI
6 Floppy disk
7 PCI
PIRQ and PCI Device
The factory-set PCI device interrupts are assigned as "Auto Detect". If the PCI slot contains a board that cannot share an
IRQ with other devices, you can change these interrupts according to the table below.
Menu
Interrupt
Option
PCI IRQ 1 LAN 1
PCI IRQ 2 LAN 2
PCI IRQ 3 –
PCI IRQ 4 USB ports 1 and 2
PCI IRQ 5 PCI slot #1
PCI IRQ 6 –
PCI IRQ 7 –
PCI IRQ 8 USB port 3
IRQ Peripheral Device (Controller)
8 Real-time clock
9 PCI
10 PCI
11 PCI
12 Mouse
13 Numeric processor
14 Primary IDE
15 Secondary IDE
Recommended
IRQ 7
IRQ 7
Auto Select
IRQ 5
RQ 11
Auto Select
Auto Select
IRQ 5