Operating instructions

Detailed descriptions
17.3 System resources
SIMATIC Panel PC 677B
Operating Instructions, 05/2007, A5E01035609-01
209
17.3.2.3 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
IRQ assignments for Windows XP Professional, Windows XP Embedded and
Windows 2000 Professional (APIC mode)
Ethernet 1 16
1) 2)
Ethernet 2 17
1)
Profibus/MPI 19
1)
PCI slot 1 20
1)
PCI slot 2 21
1)
PCI Express slot 16
1) 3)
1)
Requirement: The modules in the PCI slots each require only one interrupt
Exclusive interrupt in PIC mode
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. Exclusive interrupts are not available in PIC
mode. Disable specific system resources in order to obtain exclusive interrupts. BIOS
assigns the PIC interrupts at random during restart of the system.