Siemens SIMATIC IPC427C Operations Instructions Page 144

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Detailed descriptions
16.3 System resources
SIMATIC IPC427C
144 Operating Instructions, 10/2010, A5E02414743-03
Table 16- 1 Interrupt sharing in APIC mode
Interrupt Interrupt type
IRQ0 System Timer / HPET ISA exclusive
IRQ1 PS/2 keyboard controller emulation ISA exclusive
IRQ2 Interrupt controller 2 ISA exclusive
IRQ3 Reserved for Com Port 2 (COM2) ISA exclusive (COM2)
IRQ4 Com Port 1 (COM1) ISA exclusive
IRQ5 Free
IRQ6 Reserved
IRQ7 Free
IRQ8 Realtime clock ISA exclusive
IRQ9 ACPI-SCI (system control interrupt)
IRQ10 CAN (optional) or free ISA exclusive (CAN)
IRQ11 Free
IRQ12 PS/2 mouse controller emulation ISA exclusive
IRQ13 Coprocessor ISA exclusive
IRQ14 Primary IDE Channel (enhanced mode) ISA exclusive
IRQ15 Secondary IDE Channel (enhanced mode) ISA exclusive
IRQ16 Graphics, PCI-Express Bridge, LAN2, SATA
Controller 2 (enhanced / native IDE mode)
PCI shared
IRQ17 LAN1 exclusive PCI exclusive
IRQ18 SATA-AHCI Controller (AHCI mode), SATA
Controller 1 (native IDE mode)
PCI shared
IRQ19 DP12/MPI or PROFINET (optional) PCI exclusive
IRQ20 PCI104 Slot 1 PCI exclusive
IRQ21 PCI104 Slot 2 PCI exclusive
IRQ22 PCI104 Slot 3, USB-UHCI Controller 1-3 (USB1.1),
USB-EHCI Controller 1 (USB2.0)
PCI shared
IRQ23 PCI104 Slot 3, USB-UHCI Controller 4-6 (USB1.1),
USB-EHCI Controller 2 (USB2.0)
PCI shared
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