Siemens SIMATIC IPC627D Operating Instructions Manual page 141

Interrupt assignment of the slot connectors on the bus board
Host PCI-IRQ A to H will be assigned IRQ 16 to 23 permanently in ACPI mode. Host PCI-IRQ A to H will be automati-
1
cally assigned IRQ 0 to 15 in PIC mode. A specific assignment can not be enforced.
Interrupt in APIC mode
Y
BIOS Default Interrupt in PIC mode (e.g. DOS)
Z
Exclusive PCI hardware interrupt
Applications demanding a high-performance interrupt require a high-speed hardware
interrupt reaction. The PCI hardware interrupt should be used only by one resource in order
to ensure high-speed reaction of the hardware.
Exclusive interrupt in APIC mode
Ethernet 1
Ethernet 2
Profibus/MPI
PCI slot 1
PCI slot 2
PCI Express slot
Requirement: The modules in the PCI slots each require only one interrupt
1)
Requirement: VGA and PCIexpress do not require an interrupt
2)
Requirement: VGA does not require an interrupt and Ethernet1 is disabled
3)
SIMATIC IPC627D/827D
Operating Instructions, 09/2014, A5E32990859-AB
IRQ assignments for Windows systems, (APIC mode)
Technical specifications
8.5 Hardware descriptions
16
1, 2
17
1
19
1
20
1
21
1
16
1, 3
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