![background image](http://html1.mh-extra.com/html/ibase-technology/mi991af/mi991af_user-manual_3365159068.webp)
APPENDIX
64
MI991 User’s Manual
B. Interrupt Request Lines (IRQ)
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.
Level
Function
IRQ0
System Timer
IRQ3
Serial Port #2
IRQ4
Serial Port #1
IRQ5
Serial Port #3
IRQ7
Serial Port #4
IRQ8
Real Time Clock
IRQ 11
Intel(R) 100 Series/C230 Series Chipset Family
Integrated Sensor Hub - A135
IRQ 11
Intel(R) 100 Series/C230 Series Chipset SMBus -
A123
IRQ 11
Intel(R) 100 Series/C230 Series Chipset Thermal
subsystem - A131
IRQ 13
Numeric data processor
IRQ 16
High Definition Audio Controller
IRQ 16
Standard SATA AHCI Controller
IRQ 19
Intel(R) Active Management Technology - SOL
(COM5)
Summary of Contents for MI991AF
Page 4: ...iv MI991 User s Manual This page is intentionally left blank...
Page 9: ...INTRODUCTION MI991 User s Manual 5 Board Dimensions...
Page 18: ...INSTALLATIONS 14 MI991 User s Manual Connector Locations on MI991...
Page 28: ...INSTALLATIONS 24 MI991 User s Manual PCIE1 PCI E X16 Slot 2EG08211 D2D DF...
Page 50: ...BIOS SETUP 46 MI991 User s Manual This page is intentionally left blank...