Exclusive Pci Hardware Interrupt - Siemens SIMATIC HMI IPC677C Operating Instructions Manual

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
1)
automatically 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
Figure 16-4 Interrupt assignment of the slot connectors on the bus board
16.3.2.3

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 PCI Express do not require an interrupt
2)
Requirement: VGA does not require an interrupt and Ethernet1 is disabled
3)
SIMATIC HMI IPC677C
Operating Instructions, 04/2013, A5E02722710-04
IRQ assignments for Windows systems, (APIC mode)
Detailed descriptions
16.3 System resources
16
1) 2)
17
1)
19
1)
20
1)
21
1)
16
1) 3)
219