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Siemens PANEL PC 877 Manual De Usuario

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Detailed descriptions 
 
17.5 System resources 
 
SIMATIC Panel PC 877 
17-34
 
Operating instructions, Release 07/2006, A5E00877780-01 
 
17.5.2.2  Interrupt Assignments 
 
Interrupt 
Description 
Comment 
IRQ0 
System timer 
fixed 
IRQ1 
Keyboard 
fixed 
IRQ4 
Serial port COM1 
2)
 
IRQ8 
Real-time clock (RTC) 
fixed 
IRQ9 
Microsoft ACPI-Compliant System 
1) 
 
IRQ13 
Numeric processor 
fixed 
IRQ14 
1. IDE channel (primary) 
2)
 
IRQ16 
Mobile Intel 915GM/GMS, 910GML 
Express Chipset Family 
1)
 
IRQ16 
Intel® 82801FB/FBM USB Universal 
Host Controller - 2658 
1)
 
IRQ 16 
Intel® 82801FB/FBM USB Universal 
Host Controller -2659 
1)
 
IRQ 19 
Intel® 82801FB Ultra ATA Storage 
Controllers - 2652 
1)
 
IRQ 20 
VIA Rhine III Fast Ethernet Adapter 
2)
 
IRQ 22 
Intel® 82801FB/FBM Universal Host 
Controller - 265A 
1)
 
IRQ 22 
Intel® 82801FB/FBM Universal Host 
Controller -265B 
1)
 
IRQ 22 
VIA Rhine III Fast Ethernet Adapter #2 
2)
 
IRQ 23 
Intel® 82801FB/FBM USB2 Enhanced 
Host Controller - 265C 
1)
 
 
 
PCI Interrupt Lines 
PCI devices interrupt assignment (PCI IRQ) 
INT – A 
Graphics, USB A (channel 0+1), USB B (channel 2+ 3) 
INT – B 
Slot 1 
INT – C 
Slot 2 
INT – D 
Serial ATA 
INT – E 
Ethernet 1 
INT – F 
MPI/DP 
INT – G 
Ethernet 2, USB C (channel 4+5), USB D (channel 6 + 7) 
INT - H 
USB 2.0 
 
1) 
The on-board PCI devices require PCI interrupt channels. These interrupt channels are 
sharable and plug and play compatible. This means several devices can share the same 
interrupt. Interrupts are assigned automatically (exception: see section, Exclusive PCI 
Hardware Interrupt).  
2) 
These functions can be disabled in the Setup This releases allocated resources.