Chapter 3 BIOS Configuration
64
PISA-E1 User’s Manual
IRQs Activity Monitoring
The following is a list of IRQ’s,
I
nterrupt
R
e
Q
uests, which can be exempted
much as the COM ports and LPT ports above can. When an I/O device wants to
gain the attention of the operating system, it signals this by causing an IRQ to
occur. When the operating system is ready to respond to the request, it interrupts
itself and performs the service.
When set
On
, activity will neither prevent the system from going into a power
management mode nor awaken it.
1.
IRQ3 (COM 2 )
2.
IRQ4 (COM 1)
3.
IRQ5 (LPT 2)
4. IRQ6
(Floppy
Disk)
5.
IRQ7 (LPT 1)
6. IRQ8
(RTC
Alarm)
7.
IRQ9 (IRQ2 Redir)
8. IRQ10
(Reserved)
9. IRQ11
(Reserved)
10. IRQ12 ( PS / 2 Mouse )
11. IRQ13
(Coprocessor)
12. IRQ14
(Hard
Disk)
13. IRQ15
(Reserved)