Siemens TX150 S6 Slot/device Property Interrupt signal, Assignment of the PCI interrupts

Features PCI bus

PCI and PCI-X buses use four lines named INTA to INTD, typically connected to all devices on the bus in order to periodically balance interrupt load. An interrupt signal may thereby be used simultaneously by multiple devices (interrupt sharing).

PCI Express devices send their interrupts through messages. This avoids restrictions in wiring.

The following interrupt signals are used in the system:

Slot/device	Property	Interrupt signal
VGA	iRMC graphic	Int B
LAN	BCM5755T	Int A
Slot 6	PCIe x8	Int A, B, C, D
Slot 5	PCIe x8	Int A, B, C, D
Slot 4	PCIe x4	Int A, B, C, D
Slot 3	PCI (33 MHz)	Int C, D, F, G
Slot 2	PCI (33 MHz)	Int F, G, C, D
Slot 1	PCI (33 MHz)	Int G, F, D, C

Assignment of the PCI interrupts

If you select Auto in the BIOS setup, the interrupts are assigned automatically and no further settings are required.

D2559 (TX150 S6) Technical Manual 19