Table of Contents
Advertisement
65MIV/65MIV2/65MIV-X/65MIV2-X
2-6.9 IRQ DESCRIPTION
IRQ
Function Description
IRQ 0
System Timer
IRQ 1
Keyboard Controller
IRQ 2
Programmable Interrupt
IRQ 3
Serial Port (COM 2)
IRQ 4
Serial Port (COM 1)
IRQ 5
IRQ 6
Floppy Disk Controller
IRQ 7
Parallel Port (LPT1)
IRQ 8
Real Time Clock (RTC)
IRQ 9
IRQ 10
IRQ 11
IRQ 12
PS/2 Mouse Port
IRQ 13
Coprocessor
IRQ 14
Primary IDE Channel
IRQ 15
Secondary IDE Channel
• Both ISA and PCI expansion cards may require IRQs. System IRQs are
available to cards installed in the ISA expansion bus first, then any re-
maining IRQs are available to PCI cards. Currently, there are two types of
ISA cards.
• The original ISA expansion card design, now referred to as "Legacy" ISA
card, requires that you configured the card's jumpers manually and then
install it in any available slot on the ISA bus. To see a map of your used
and free IRQs in Windows 98, the Control Panel in My Computer, contains
a System icon, which gives you a Device Manager tab. Double-Clicking on
a specific hardware device gives you a Resources tab which shows the
Interrupt number and address. Double-Clicking Computers to see all the
interrupts and addresses for your system. Make sure that no two devices
use the same IRQ or your computer will experience problems when those
two devices are in use at the same time.
30
Priority
1
2
N/A
11
12
13
14
15
3
4
5
6
7
8
9
10
Advertisement
Table of Contents
