Technical specifications
8.5 Hardware description
SIMATIC IPC547D
Operating Instructions, 06/2011, A5E03473780-01
105
Slot-specific interrupt assignment
Interrupt routing of the slot connectors on the motherboard.
1
Host PCI-IRQ A to H is assigned to IRQ 16 to 23 permanently in APIC mode. Host PCI-IRQ A to H is automatically
assigned to IRQ 0 to 15 in PIC mode by the BIOS. A specific assignment cannot be forced.
Y Interrupt APIC mode
Z BIOS Default Interrupt PIC mode, e.g. DOS
Exclusive PCI hardware interrupt
Applications demanding high-performance interrupt handling require 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.
Setting up an exclusive interrupt on the device (APIC mode only)
Only on PCI slot 4 and PCI slot 5 can you use an exclusive interrupt.
Additional exclusive interrupts are not available for use at the slots.
Assigning exclusive interrupts in BIOS Setup (PIC mode only)
The interrupts are automatically assigned to the slots at system startup due to the default
settings in system BIOS. Several slots may share the same interrupt, depending on the
system configuration. This functionality is known as interrupt sharing.
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