Hardware description
A.2 Expansion cards
174
Operating Instructions, 01/2021, A5E43920357-AA
Motherboard SMS-W480
Information on the slots can be found under "Technical specifications of the expansion card
Slot
PCI1
PCI2
PCIEX16_1 PCIEX16_2 PCIEX8_1
PCIEX4_1
PCIEX4_2
M.2
connector
Host Device
PCH Port 4
PCI Dev0
PCH Port 4
PCI Dev1
PEG
0:1:0
PCH Port 9-
12
PCH Port 8 PCH Port 3 PCH Port
21-24
PCH Port
19-20
Bus APIC
Interrupt
INT A
PIRQ A
PIRQ B
PIRQ A
PIRQ A
PIRQ D
PIRQ C
PIRQ A
PIRQ C
INT B
PIRQ B
PIRQ C
PIRQ B
PIRQ B
PIRQ A
PIRQ D
PIRQ B
PIRQ D
INT C
PIRQ C
PIRQ D
PIRQ C
PIRQ C
PIRQ B
PIRQ A
PIRQ C
PIRQ A
INT D
PIRQ D
PIRQ A
PIRQ D
PIRQ D
PIRQ C
PIRQ B
PIRQ D
PIRQ B
Organizationa
l Pins
Request
REQ0
REQ1
Grant
GNT0
GNT1
ID
AD16
AD17
A.2.2
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.
Setting an exclusive interrupt on the device
All system resources (hardware addresses, memory allocation, interrupt allocation, DMA
channels) are dynamically assigned by the firmware or the operating system based on the
hardware equipment, drivers, installed expansion cards and connected external devices.
The assignment is made automatically and depends on the requested resources of the
connected devices and installed components. Due to this configuration dependency, clear
statements can only be made by determining them in relation to the system in the final
configuration.
The resources can be viewed in Windows as follows:
1.
Press the "Windows® key" and "R" simultaneously.
2.
Enter the "msinfo32" command in the "Open" field.
3.
Click "OK" to confirm.
