Interrupt Assignment Of Expansion Card Slots On The Bus Board - Siemens SIMATIC IPC647E Operating Instructions Manual

A.3.2

Interrupt assignment of expansion card slots on the bus board

Note
All system resources (hardware addresses, memory allocation, interrupt allocation, DMA
channels) are dynamically assigned by the firmware or operating system depending on the
hardware setup, drivers, inserted expansion cards and connected external devices.
Assignment is performed automatically and is independent of the resources required by the
connected devices and inserted components. Due to this configuration dependency, clear
statements can only be made by determining them in relation to the system in the final
configuration.
Resources may be viewed as follows under Windows:
1. Press the "Windows® key" and "R" simultaneously.
2. Enter "msinfo32" in the "Open" field.
3. Confirm your entry with "OK".
Applications which place high demands on interrupt performance require a fast interrupt
hardware response time. In order to enable fast hardware response time, the PCI hardware
interrupt may only be allocated to one resource.
Variant 1: 4-slot, 2 x PCI, 2 x PCIe / with piggyback
For details on this bus board version, see "Expansion card slots on the bus board
(Page 173)".
Slot Connector
Type
Host Device
Bus
APIC Interrupt
INT A
INT B
INT C
INT D
B18
A17
A26
SIMATIC IPC647E
Operating Instructions, 11/2018, A5E45589180-AA
Slot 1 Slot 4
PCI PCI
PCH PCH
Port 8 Port 8
Dev 13 Dev 14
Primary A
PIRQ D PIRQ A
PIRQ A PIRQ B
PIRQ B PIRQ C
PIRQ C PIRQ D
Req0 Req1
Gnt0 Gnt1
AD29 AD30
Slot 3 Slot 2
PEG PEG
Gen3 Gen3
8 lane 8 lane
PEG PEG
0:1:0 0:1:1
PIRQ A PIRQ B
PIRQ B PIRQ C
PIRQ C PIRQ D
PIRQ D PIRQ A
n.a. n.a.
n.a. n.a.
n.a. n.a.
Hardware description
A.3 Bus board
M.2
PCIe
Gen3
4 lane
PCH
Port 21
PIRQ A
PIRQ B
PIRQ C
PIRQ D
n.a.
n.a.
n.a.
175