Peripheral devices use interrupt request lines to notify CPU for the service
required. The following table shows the IRQ used by the devices on board.
4.2 Interrupt Request Lines (IRQ)
Level
Function
IRQ 0
System Timer
IRQ 1
Keyboard
IRQ 2
Cascaded with IRQ 9
IRQ 3
COM2
IRQ 4
COM1
IRQ 5
AC’97
IRQ 6
Floppy Drive Controller
IRQ 7
LPT1
IRQ 8
Real Time Clock
IRQ 9
USB, ACPI
IRQ 10
USB, VGA
IRQ 11
USB, LAN
IRQ 12
PS/2 mouse or Open
IRQ 13
Math Coprocessor
IRQ 14
Primary Hard Drive controller
IRQ 15
Secondary Hard Drive controller
Appendix
62
Summary of Contents for ITX-i7418VL
Page 1: ......
Page 2: ...ITX i7418VL Mini ITX Industrial Motherboard User s Manual Version 1 0 2007 05 ...
Page 5: ...1 Chapter 1 Introduction Introduction 4 ...
Page 11: ...1 10 Board Dimensions Introduction 10 ...
Page 12: ...Introduction 11 ...
Page 15: ...2 Chapter 2 Installation Installation 14 ...
Page 16: ...2 1 Jumpers and Connectors Installation 15 ...
Page 25: ...2 23 VGA1 CRT Connector 2 24 KBM1 PS 2 Keyboard Mouse VGA1 Mouse Keyboard Installation 24 ...
Page 26: ...This page is intentionally left blank Installation 25 ...
Page 27: ...3 Chapter 3 BIOS BIOS 26 ...
Page 61: ...4 Chapter 4 Appendix Appendix 60 ...
Page 64: ...This page is intentionally left blank Appendix 63 ...