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 Why does Windows XP report 23 IRQs? View next topic
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Ki Mendrossen
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PostPosted: Tue Oct 18, 2005 4:31 pm Reply with quoteBack to top

I open device manager, select view resources by type, click the + by IRQs and this is the list I get...

(ISA) 0 System Timer
(ISA) 1 Keyboard
(ISA) 4 COM1
(ISA) 6 Floppy Disk Controller
(ISA) 8 System CMOS/RTC
(ISA) 9 Microsoft ACPI Compliant System
(ISA) 12 PS/2 Compatible Mouse
(ISA) 13 Numeric Data Processor
(ISA) 14 Primary IDE
(ISA) 15 Secondary IDE
(PCI) 3 Intel 82801EM SMBus Controller
(PCI) 16 Intel 82801EB USB Universal Host Controller 24D2
(PCI) 16 Intel 82801EB USB Universal Host Controller - 24DE
(PCI) 16 Intel 82865G Graphics Controller
(PCI) 17 SoundMAX Integrated Digital Audio
(PCI) 19 Intel 82801EB USB Universal Host Controller - 24D4
(PCI) 20 Intel PRO/100 VE Network Connection
(PCI) 23 Intel 82801EB USB2 Enhanced Controller 24DD

What is windows doing to create new IRQs? Is this some fancy new form of IRQ sharing? Any insight would be great.

Thanks,
Ki
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Joined: 04 Oct 2004
Posts: 173
Location: 57�59'N 15�39'E

PostPosted: Tue Oct 18, 2005 5:46 pm Reply with quoteBack to top

The ones above the normal count is virtual IRQs
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Anonymous Coward



Joined: 20 Nov 2004
Posts: 589
Location: Shandong, China

PostPosted: Wed Oct 19, 2005 4:44 am Reply with quoteBack to top

"Up yours Bill Gates!"
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